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STRATFORD-WANGANUI AND BUNNYTHORPE-WANGANUI LINES NEEDS IDENTIFICATION WITH LONG LIST OF OPTIONS JULY 2009 REPORT NO: NP437 PREPARED BY: JULIA TING REVIEW BY: TEAM LEADER: STEPHEN LEONG GROUP MANAGER: GRAEME ANCELL FILE:

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STRATFORD-WANGANUI AND BUNNYTHORPE-WANGANUI LINES

NEEDS IDENTIFICATION WITH LONG LIST OF OPTIONS

JULY 2009

REPORT NO: NP437

PREPARED BY: JULIA TING

REVIEW BY:

TEAM LEADER: STEPHEN LEONG

GROUP MANAGER: GRAEME ANCELL

FILE:

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Contents

TABLE OF CONTENTS

Executive Summary .........................................................................................................................III 1 Introduction................................................................................................................................1

1.1 Background................................................................................................................... 1 1.2 Scope............................................................................................................................ 1

2 The Regional Network...............................................................................................................2 3 Assumptions ..............................................................................................................................6

3.1 Demand Forecast ......................................................................................................... 6 3.2 Generation .................................................................................................................... 6 3.3 Transmission Development .......................................................................................... 6 3.4 Planning Criteria ........................................................................................................... 6 3.5 Voltage Support ............................................................................................................ 7 3.6 Slack Bus...................................................................................................................... 7 3.7 Planning Horizon .......................................................................................................... 7

4 The Analysis...............................................................................................................................8 4.1 Base Case .................................................................................................................... 8 4.2 Sensitivity Analysis ....................................................................................................... 8

5 The Results ................................................................................................................................9 5.1 Base Case .................................................................................................................... 9 5.1.1 110 kV HWA-SFD-1 circuit ........................................................................................... 9 5.1.2 110 kV HWA-WVY-1 and WGN-WVY-1 circuits......................................................... 10 5.1.3 110 kV BPE-MTN-WGN 1 & 2 circuits........................................................................ 10 5.2 Possible Future Development .................................................................................... 11 5.2.1 Duplexing the 220 kV BPE-SFD circuits..................................................................... 11 5.2.2 135 MW Wind Farm near Waverley ........................................................................... 11

6 Long List of Options................................................................................................................13 7 Conclusions .............................................................................................................................14 Appendix A Summary of the 110 kV Conductor Assessment Reports ................................15 Appendix B Modern Equivalent Conductor.............................................................................16 Appendix C Demand Forecast and Diversity Factors ............................................................17 Appendix D DigSilent Simulation Results ...............................................................................18

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Executive Summary

Executive Summary Condition assessment of the 110 kV lines between Stratford and Bunnythorpe indicates that the conductors are at the end of their useful life. The 110 kV lines supply four grid exit points (Hawera, Waverly, Wanganui and Marton) and connect two power stations (Patea and Whareroa).

This document investigates options for supplying the grid exit points and power stations connected between Stratford and Bunnythorpe including options for replacement conductors on the existing lines. Many of these options involve enhancing transmission capacity or reconfiguration of the grid, and as such, fall under the Part F processes of the Electricity Governance Rules. The analysis does not consider 110 kV voltage issues.

Power transfer from the Taranaki region to the south on the 220 kV circuits between Stratford and Bunnythorpe is limited by the need to avoid the parallel 110 kV circuits between Stratford and Bunnythorpe overloading following the loss of the 220 kV circuits. The critical 110 kV circuit is the circuit between Stratford and Hawera. The rating of this circuit effectively determines how much power can be transferred on the 220 kV circuits before additional measures are needed. These measures include the insertion of a series reactor in the Hawera-Waverly circuit and the arming of an Automatic Bus Splitting Scheme (ABSS) at Hawera which, following the loss of a parallel 220 kV circuit, will split the 110 kV bus at Hawera thus relieving the loading on the Hawera-Stratford circuit.

Provided the ABSS and Hawera reactor are available, the capacity of the existing 110 kV circuits between Stratford and Bunnythorpe is sufficient to meet the 20 year load forecast. Coordination with Hawera generation and load management at the grid exit points will be required under certain outage conditions.

This analysis assumes the ABSS is not armed so that the required capability of the Hawera-Stratford circuit can be determined in the absence of the ABSS. For the same reason, the Hawera reactor is not assumed to be available in the analysis for some cases. In practice, the reactor and ABSS will be used as required to maximise south flow. To remove the need for the ABSS and Hawera reactor, the 110 kV Stratford-Hawera circuit would need a summer rating of 93 MVA in 2010 rising to 103 MVA in 2030 without constraining the 220 kV power transfer.

The Stratford-Hawera circuit does not have sufficient capacity (51/62 summer/winter rating) to meet peak demand at Hawera and Waverly (56 MW and 4 MW respectively in 2010) following the outage of the 110 kV Wanganui-Waverly circuit unless some generation is available at Hawera. The circuit’s capacity would need to be increased to a summer rating of 72 MVA to ensure that Hawera and Waverley loads can be supplied when there is no generation at Hawera.

The Hawera-Waverley and Waverley-Wanganui circuits do not have sufficient capacity (51/62 summer/winter rating) to meet peak demand at Hawera (56 MW in 2010) following the outage of the Stratford-Hawera 110 kV circuit unless some generation is available at Hawera. This loading can be managed through constraining on generation at Hawera or through pre or post contingency load management at Hawera if circuit capacity is not increased. The circuits’ capacity would need to be increased to summer ratings of 86 MVA and 88 MVA respectively in 2030 to ensure that Hawera and Waverley loads can be supplied when there is no generation at Hawera.

The Bunnythorpe-Marton-Wanganui circuits have sufficient capacity to meet the load demand up to 2030 under normal operating condition. At times, planned outages may need to be coordinated with Hawera generation to avoid overloading on the Bunnythorpe-Marton-Wanganui circuits.

Future development in the Taranaki region such as duplexing the 220 kV Brunswick-Stratford circuits and 135 MW wind farm connection at Waverley would require larger capacity conductor from Hawera to Wanganui and increasing conductor capacity between Wanganui to Bunnythorpe to:

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Executive Summary

• enable maximum power transfer; and • enable unconstrained dispatch of possible wind generation and Hawera

generation.

Needs Identification with Long List of Options © Transpower New Zealand Limited 2009. All rights reserved. IV

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Chapter 1 : Introduction

1 Introduction

1.1 Background

In 2008 Transpower commissioned two reports that identified that the condition of the conductor on the 110 kV circuits between Bunnythorpe and Stratford were degraded to the extent that they meet the condition assessment replacement criteria with modern equivalent conductor by 2009 (See Appendix A for more details).

Transpower’s general policy (TP.GL 03.02 Issue 1 1/Oct/2001) is to replace copper conductor on a transmission line with the closest modern equivalent conductor (See Appendix B for a list of modern equivalent conductors). In this case, the:

• copper conductor between Stratford and Wanganui would be replaced with a ‘modern equivalent aluminium conductor’ such as Coyote, providing a 6 MVA increase in capacity; and

• the ACSR-GZ wolf conductor between Bunnythorpe and Wanganui would be replaced with modern ACSR-AC wolf conductor, providing a 2.5 MVA increase in capacity.

Just replacing the conductors with their modern equivalents may not be sufficient, as there are existing constraints on these circuits and more capacity may be required in the future.

1.2 Scope

This report only addresses the thermal issues on the Taranaki 110 kV transmission circuit between Stratford and Bunnythorpe. The scope of this investigation is to:

• confirm there is a need to increase the Taranaki 110 kV conductors to maximise the south and north power transfer, whilst meeting the expected load and generation demands for the foreseeable future;

• investigate an appropriate capacity for the replacement conductor; and • identify a list of options that Transpower considers could be reasonably

implemented within the required timeframe.

Not in scope:

The following issues will not be addressed in this report: • voltage issues and reactive requirements. This report assumed an infinite static

VAR compensator on the Hawera 110 kV bus for reactive support to maintain Hawera 110 kV bus voltage at 1.00 p.u; and

• overloading of the interconnecting transformers at Stratford and Bunnythorpe. South or north power transfer through the Taranaki 110 kV circuits may overload the interconnecting transformers at Stratford and Bunnythorpe. This report assumes the interconnecting transformers would be replaced by larger capacity units as required.

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Chapter 2 : The Regional Network

2 The Regional Network The Taranaki regional network is shown geographically and schematically in Figure 2-1 and

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Chapter 2 : The Regional Network

Figure 2-2.

Figure 2-1: Taranaki 220 kV and 110 kV network

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Chapter 2 : The Regional Network

Figure 2-2 Taranaki 220 kV and 110 kV schematic

110 kV

110 kV

110 kV

110 kV

110 kV

110 kV

110 kV

110 kV

220 kV

220 kV

33 kV

110 kV

Taranaki Combined

Cycle

33 kV

11 kV

Patea Whareroa

33 kV

33 kV33 kV

33 kV

33 kV

110kV CIRCUIT

50/66kV CIRCUIT

SUBSTATION BUS

TRANSFORMER

TEE POINT

KEY

220kV CIRCUIT

LOAD

CAPACITOR

New Plymouth

11 kVMoturoa

Carrington Street Huirangi

Motunui

Opunake

Kapuni

Stratford

Hawera

Waverley33 kV

Wanganui

110 kV

220 kV

33 kV

Brunswick

55 kV

220 kV

Taumarunui

WaikatoHuntly Te Kowhai

Mangahao

110 kV

220 kV

HaywardsWilton/Linton

110 kV

55 kV(NZR)

33 kV33 kV

Marton

BunnythorpeMataroa

WhakamaruTangawai

The transmission network between Bunnythorpe and Stratford consists of: • three 220 kV circuits between Brunswick and Stratford and two 220 kV circuits

between Brunswick and Bunnythorpe; in parallel with • one 110 kV circuit between Stratford and Wanganui and two 110 kV circuits

between Bunnythorpe and Wanganui.

The circuit details are provided in Table 2-1.

Table 2-1: Details of circuits between Bunnythorpe and Stratford

Line Circuit Conductor Conductor Rating

Summer Winter

Brunswick-Stratford-A 220 kV BRK-SFD-1 Zebra ACSR-GZ @ 50oC 239MVA, 627A 291MVA, 764A

Brunswick-Stratford-A 220 kV BRK-SFD-2 Zebra ACSR-GZ @ 49oC 232MVA, 609A 286MVA, 751A

Brunswick-Stratford-B 220 kV BRK-SFD-3 Zebra ACSR-GZ @ 50oC 239MVA, 627A 291MVA, 764A

Brunswick-Bunnythorpe-A 220 kV BPE-BRK-1 Duplex Zebra ACSR-GZ @ 75 oC 694MVA, 1822A 764MVA, 2006A1

Brunswick-Bunnythorpe-A 220 kV BPE-BRK-2 Duplex Zebra ACSR-GZ @ 75 oC 694MVA, 1822A 764MVA, 2006A1

Wanganui-Stratford-A 110 kV HWA-SFD-1 Cu 19/2.34 @ 50oC 51MVA, 268A 62MVA, 325A

Wanganui-Stratford-A 110 kV HWA-WVY-1 Cu 19/2.34 @ 50oC 51MVA, 268A 62MVA, 325A

Wanganui-Stratford-A 110 kV WGN-WVY-1 Cu 19/2.34 @ 50oC 51MVA, 268A 62MVA, 325A

Bunnythorpe-Wanganui-B 2 110 kV BPE-MTN-WGN-1&2 Wolf ASCR-GZ @ 50oC 63MVA, 331A 77MVA, 404A

1 The circuit’s winter capacity is presently limited by bus section rating of 1870A. 2 The circuits between Bunnythorpe and Wanganui do not have circuit breaker protection at Marton. This means that any maintenance on

the line takes out the whole circuit from Bunnythorpe to Marton and on to Wanganui.

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Chapter 2 : The Regional Network

The existing low capacity 110 kV circuits constrain south power flow along the parallel 220 kV circuits between Bunnythorpe and Stratford during an outage of one of the 220 kV circuits. To relieve, but not eliminate this constraint, at Hawera there is:

• a 77 mH series reactor in the 110 kV HAW-WVY-1 circuit to limit through transmission along the 110 kV circuits, increasing the 220 kV transfer by about 25%; and

• an automatic bus splitting scheme to stop through transmission on the 110 kV circuits for an outage on the parallel 220 kV circuits between Bunnythorpe and Stratford. Patea and the Hawera 33 kV load will be connected only to the 110 kV Hawera–Stratford circuit. Whareroa and Kupe will be connected only to the 110 kV Hawera–Waverley circuit.

The upgrade of the HVDC link in 2012 will cause more power to flow through the North Island 220 kV grid backbone. The full south/north flow capacity of the HVDC link upgrade may not be able to be fully utilised due to the existing constraints caused by the 110 kV network on the 220 kV network between Bunnythorpe and Stratford (south transfer) and Tokaanu-Whakamaru (north transfer).

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Chapter 3 : Assumptions

3 Assumptions

3.1 Demand Forecast

This study uses the 2009 APR ADMD demand forecast version 7, customised with the ‘prudent demand forecast’ from Covec for the Taranaki region.

Table 3-1 lists the peak demand forecast (prudent growth) used in this study for the grid exit points between Bunnythorpe and Stratford.

Table 3-1: Demand forecast of the grid exit points between Bunnythorpe and Stratford

Grid Exit Point Peak Demand (MW)

2010 2011 2012 2013 2014 2015 2016 2017 2018 2019 2020

Brunswick 37.9 38.5 39.0 39.6 40.2 40.8 41.4 42.1 42.7 43.3 44.0

Hawera 44.2 45.3 46.4 47.6 48.7 49.9 51.1 52.3 53.5 54.2 54.8

Hawera (Kupe) 12.2 12.2 12.2 12.2 12.2 12.2 12.2 12.2 12.2 12.2 12.2

Marton 15.5 15.6 15.7 15.8 15.9 16.1 16.2 16.3 16.4 16.5 16.7

Wanganui 45.4 48.2 50.2 52.2 53.6 54.4 55.0 55.7 56.3 56.8 57.2

Waverley 4.1 4.2 4.3 4.4 4.5 4.6 4.7 4.8 4.9 4.9 5.0

See Appendix C for the complete 30 year forecast (including power factors and diversity factors).

3.2 Generation

This investigation assumes: • generation fed into the grid at Stratford 220 kV (existing 360 MW and committed

200 MW peaking plant scheduled for commission in 2010) is available for both high north/south power flows and winter/summer scenarios.

• Patea (hydro – 32 MW) and Whareroa (co-generation – 50 MW) not generating but only providing voltage support for both high north/south power flows and winter/summer scenarios.

3.3 Transmission Development

The transmission development plan adopts the future reinforcement and grid upgrade plan based on 2009 Annual Planning Report up to year 2011 for the North Island.

This investigation assumes: • Hawera reactor is in service for high south power transfer; and • automatic bus splitting scheme (ABSS) is taken out of service.

3.4 Planning Criteria

This analysis assumes the transmission lines are limited to 100% of their respective winter and summer conductor thermal ratings (unless otherwise stated) with no short term overload capability.

Issues relating to the overloading of the interconnecting transformers at Stratford and Bunnythorpe and supply transformers are not dealt with in this report.

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Chapter 3 : Assumptions

3.5 Voltage Support

This analysis: • assumes Patea and Whareroa are able to provide reactive support with zero

power output; and • models an infinite static VAR compensator on the Hawera 110 kV bus for reactive

support to maintain Hawera 110 kV bus voltage at 1.00 p.u.

3.6 Slack Bus

A slack bus was placed at Stratford 220 kV bus to simulate high south power transfer through the 220 kV Taranaki network.

High HVDC transfer from South Island is used to simulate high north transfer through the North Island 220 kV grid backbones.

3.7 Planning Horizon

The analysis was carried out for year 2010, 2020 and 2030.

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Chapter 4 : The Analysis

4 The Analysis

4.1 Base Case

The investigation is carried out based on the assumptions made (Section 3) for the existing and committed system configurations. The study is carried out for maximum south and north power transfer. Maximum power transfer is defined as the maximum pre-contingency loading on the 220 kV circuits between Bunnythorpe and Stratford (south transfer) and Tokaanu and Whakamaru (north transfer) to avoid circuit overload post contingency. The study looked into a single credible contingency event on the Taranaki 110 kV network and carried out for both winter and summer demand forecast scenarios.

4.2 Sensitivity Analysis

This investigation will check the sensitivity of the conclusion to some possible system configuration changes.

Possible future generation and transmission developments that may affect power flow through the transmission circuits between Bunnythorpe and Stratford include:

• duplexing of the 220 kV Brunswick-Stratford circuits (see Chapter 7 of the 2009 Annual Planning Report for more details). This would also increase the through power flow along the parallel 110 kV circuits; and

• a 135 MW wind farm near Waverley. The maximum generation from this wind farm would exceed the capacity of the existing 110 kV circuits.

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Chapter 5 : The Results

5 The Results This section describes the results of the power flow analysis. See Appendix D for the simulation diagrams.

5.1 Base Case

The investigation was carried out using the existing conductor type stated in Table 2-1. The assumptions made for the existing and committed system configuration up to 2030 is listed in Section 3.

5.1.1 110 kV HWA-SFD-1 circuit (see Appendix D.1 for the simulation diagrams)

Constrain the Maximum Power Transfer on 220 kV Circuits

With no Hawera generation, the existing 110 kV HWA-SFD-1 circuit (summer/winter circuit rating of 266/352A) constrains the maximum south and north power transfer on the 220 kV circuits from summer 2010. Table 5-1 shows the loading on the 110 kV HWA-SFD-1 circuit for 220 kV maximum south and north power transfer for 2010, 2020 and 2030 under:

• normal operating conditions; • an outage of the 220 kV BRK-SFD (south flow) or 220 kV TKU-WKM (north flow)

circuits; • Hawera reactor is bypassed during maximum south power transfer.

Table 5-1: 110 kV HWA-SFD loading (A)

Maximum South Flow Maximum North Flow

Summer Winter Summer Winter Contingency

2010 2020 2030 2010 2020 2030 2010 2020 2030 2010 2020 2030

Normal 452 478 505 478 509 536 296 351 377 287 346 370

220 kV outage 488 514 541 521 554 581 288 344 369 278 337 362

Reactor Bypassed 489 510 538 524 548 575

Thermal Issues

With no Hawera generation, the 110 kV HWA-SFD-1 circuit will overload from 2010 for an outage of either:

• 110 kV HWA-WVY-1; or • 110 kV WGN-WVY-1; or • 110 kV BPE-MTN-WGN.

The percentage overload on the 110 kV HWA-SFD-1 circuit due to the outage of either one of the 110 kV BPE-MTN-WGN circuits is greatest during high south power transfer. The results are shown in Table 5-2.

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Chapter 5 : The Results

Table 5-2: Loading on 110 kV HWA-SFD-1 during an outage of either one of the 110 kV BPE-MTN-WGN-1 & 2 circuits

Loading on 110 kV HWA-SFD-1 (%, A)

South Flow North Flow Year

Summer Winter Summer Winter

2010 173%, 459A 147% 477A 125%, 331A <100%

2020 186%, 495A 159%, 518A 148%, 393A 118%, 383A

2030 198%, 526A 169%, 548A 159%, 423A 127%, 413A

Results

These results show that a modern equivalent conductor would not provide sufficient capacity on the 110 kV HWA-SFD-1 circuit. The replacement conductor would require a summer rating of at least 489 A such as Nobelium @ 50oC, Wolf @ 75oC or Coyote @ 90oC under the worst contingency conditions in the very near future.

5.1.2 110 kV HWA-WVY-1 and WGN-WVY-1 circuits (see Appendix D.2 for the simulation diagrams)

Under normal operating condition with maximum 220 kV power transfer and no Hawera generation, the loading on the 110 kV HWA-WVY-1 and WGN-WVY-1 circuits are within their existing conductor thermal limits.

Thermal Issues

With no Hawera generation, an outage of the 110 kV HWA-SFD-1 circuit will overload the HWA-WVY-WGN circuit from 2010. The percentage overload based on the existing circuits’ rating is shown in Table 5-3.

Table 5-3: 110 kV HWA-WVY-WGN loading during an outage of 110 kV HWA-SFD circuit

% Overload, Loading (A)

Summer Winter Circuit

2010 2020 2030 2010 2020 2030

HWA-WVY-1 132%, 351A 149%, 397A 169%, 450A 102%, 332A 131%, 426A 149%, 484A

WGN-WVY-1 137%, 361A 155%, 410A 176%, 464A 106%,342A 136%, 437A 154%, 496A

Results

These results show that a modern equivalent conductor would not provide sufficient capacity on the 110 kV HWA-WVY-1 and WGN-WVY-1 circuits. A replacement conductor such as Nobelium @ 50oC, Wolf @ 75oC or Coyote @ 90oC would provide sufficient capacity under the worst contingency condition up to year 2030.

5.1.3 110 kV BPE-MTN-WGN 1 & 2 circuits (see Appendix D.3 for the simulation diagrams)

Under normal operating condition with maximum 220 kV power transfer and no Hawera generation, the loading on the 110 kV BPE-MTN-WGN 1 & 2 circuits are within their existing conductor thermal limits.

Thermal Issues

An outage of either one of the existing 110 kV BPE-MTN-WGN 1 & 2 circuits would not cause the other circuit to overload within the study horizon. However, with no Hawera generation and an outage of 110 kV HWA-SFD-1, the 110 kV Bunnythorpe-Marton 1 & 2 section will overload in summer from 2020.

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Chapter 5 : The Results

Table 5-4: Summer loading on BPE-MTN 1 & 2 section during an outage of 110 kV HWA-WVY circuit

Circuit 2010 2020 2030

BPE-MTN-1 & 2 <100% 106%, 353A 117%, 390A

Results

Replacement with a ‘like for like’ modern ACSR-AC wolf conductor for the 110 kV BPE-MTN-WGN 1 & 2 circuits would provide sufficient capacity with co-ordination from Hawera generation under the worst contingent event.

5.2 Possible Future Development

This investigation was carried out to check the sensitivity of the Base Case conclusions to some possible system configuration changes.

5.2.1 Duplexing the 220 kV BPE-SFD circuits (see Appendix D.4 for the simulation diagrams)

Duplexing the 220 kV BPE-SFD circuits would increase the maximum pre-contingency south transmission transfer limit between Bunnythorpe and Stratford from 577 MVA to 713 MVA. This inevitably increases the transfer through the 110 kV circuits between Stratford and Bunnythorpe. A bigger conductor is required on the 110 kV circuits from Stratford to Wanganui to remove the 110 kV constraints should the 220 kV transfer limit increase. Table 5-5 gives an indication of the loading on 110 kV circuits from Stratford to Bunnythorpe with and without duplexing the 220 kV BRK-SFD circuits for maximum south flow in summer 2020.

Table 5-5: Loading on the Taranaki 110 kV circuits with Duplexing of 220 kV BRK-SFD Circuits

Circuits Loading for Maximum South Flow – Summer 2020

Circuit Base Case with Duplexing 220 kV BRK-SFD circuits

HWA-SFD 478A 582A

HWA-WVY 142A 239A

WGN-WVY 126A 221A

BPE-MTN-WGN 123A 80A

5.2.2 135 MW Wind Farm near Waverley (see Appendix D.4 for the simulation diagrams)

A possible 135 MW wind farm at Waverley would reduce the loading on the 110 kV HWA-SFD-1 circuit under normal operating conditions. The loss of WVY-WGN-1 circuit would require HWA-SFD-1 circuit capacity of more than 1.5 times its base case rating to enable full dispatch of the proposed wind generation and Hawera generation (see Table 5-6). The possible wind farm connection would require a higher capacity conductor from Hawera to Wanganui and increasing conductor capacity between Bunnythorpe and Wanganui without constraining generation dispatch at Waverley and Hawera in the following situations:

• with maximum 220 kV south and north power transfer; and • under a contingent event, for an outage of either:

HWA-WVY-1 circuit; or WGN-WVY-1 circuit; or either one of the BPE-MTN-WGN 1 & 2 circuits.

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Chapter 5 : The Results

Table 5-6 compares the loading on the 110 kV circuits between Bunnythorpe and Stratford for maximum south and north power transfer for summer 2020 in the base case with:

• a possible 135 MW wind farm at Waverley; and • duplexing of 220 kV Brunswick-Stratford circuits.

Table 5-6 also shows the maximum loading on the 110 kV circuits between Bunnythorpe and Stratford under a worst single contingent event after the connection of Waverley wind farm.

Table 5-6: The Taranaki 110 kV circuits Loading (2020 summer rating) - Base Case versus Future Development

with Duplexing 220 kV BRK-SFD circuits

and Proposed Wind Generation

Circuit Base Case Normal Operation with No Hawera

Generation

Normal Operation with Maximum

Hawera Generation

Maximum Circuit Loading under a Single Contingent Event with Maximum

Hawera Generation

South Flow

North Flow

South Flow

North Flow

South Flow

North Flow Loading Event

HWA-SFD 478A 351A 279A 44A 83A 308A 806A Loss of WVY-WGN-1

HWA-WVY 142A 22A 52A 319A 26A 207A 648A Loss of WVY-WGN-1

WGN-WVY 126A 7A 622A 327A 693A 439A 746A Loss of HWA-SFD-1

BPE-MTN-WGN 123A 166A 224A 82A 259A 137A 450A Loss of BPE-MTN-WGN-1

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Chapter 6 : Long List of Options

6 Long List of Options This section provides a long list of transmission options for the 110 kV transmission lines between Bunnythorpe and Stratford, including those received during consultation. Transpower considers all these options could be reasonably implemented within the required timeframe (i.e. in 2009):

• reconductor the transmission lines with a “like-for-like” modern replacement conductor;

• reconductor the transmission lines with a higher capacity conductor, using a simplex configuration;

• reconductor the transmission lines with a higher capacity conductor, using a duplex configuration;

• convert the 110 kV transmission lines to 220 kV; • decommission the Wanganui-Waverley section and reconductor the remaining

sections; • decommission the Hawera-Waverley section and reconductor the remaining

sections; • decommission the Hawera-Marton sections, reconductor the remaining sections,

and establish 220/110 kV interconnections at Waverley and Wanganui to the Brunswick-Stratford A 220 kV line;

• decommission the Hawera-Wanganui section, reconductor the remaining sections, and establish a 220/110 kV interconnection at Waverley to the Brunswick-Stratford A 220 kV line;

• for the Bunnythorpe-Wanganui B line, consider reconductoring with: like-for-like; and like-for-like on one circuit and higher capacity conductor on the other

circuit • for options which reduce Hawera to “n” security, consider:

building a new 110 kV single circuit transmission line between Stratford and Hawera to provide “n-1” to Hawera; or

building a new 110 kV double circuit transmission line between Stratford and Hawera and decommission the existing line to provide “n-1” security to Hawera.

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Chapter 7 : Conclusions

7 Conclusions Table 7-1 summarises the loading on the Taranaki 110 kV circuits between Stratford and Bunnythorpe under:

• normal operating conditions; and • worst contingent event.

Table 7-1: 2010 and 2030 Taranaki 110 kV Circuit Loading for Maximum Power Transfer: Base Case – Normal Operating Condition versus n-1 Contingent Event

Circuit

Existing Conductor Rating

(Summer/Winter) MVA Amps

2010 - Loading for Normal Operating

Condition (Summer/Winter) MVA Amps

2010 - Maximum Loading under n-1 (Summer/Winter) MVA Amps

2030 - Loading for Normal Operating

Condition (Summer/Winter) MVA Amps

2030 - Maximum Loading under n-1 (Summer/Winter) MVA Amps

HWA-SFD 51/62 266/325 86/91 452/478 93/100 489/524 96/102 505/536 103/111 541/581

HWA-WVY 51/62 266/325 28/35 146/182 67/63 351/332 26/33 138/173 86/92 450/484

WGN-WVY 51/62 266/325 25/32 131/167 69/65 361/342 23/30 119/156 88/95 464/496

WGN-MTN 63/77 333/406 19/17 99/88 50/47 262/246 26/23 138/119 66/66 348/347

BPE-MTN 63/77 333/406 26/24 135/128 57/54 298/286 34/32 180/167 74/75 390/395

The analysis concludes that:

• 110 kV Hawera-Stratford-1 circuit would require higher capacity than the modern equivalent of the existing conductors to enable maximum 220 kV power transfer. It requires a conductor with minimum summer rating of 489 A.

The loading on this circuit is dependent on the future development in the Taranaki region. Duplexing the 220 kV Brunswick-Stratford circuits would require higher conductor capacity for 110 kV Hawera-Stratford-1 circuit for the maximum 220 kV south transfer. New wind generation connection at Waverley would reduce the loading of the 110 kV Hawera-Stratford-1 circuit under normal system operation. The worst single contingency event would require minimum summer conductor rating of 806 A to allow full generation dispatch from the proposed wind farm and Hawera generation.

• 110 kV Hawera-Waverley-1 and Waverley-Wanganui-1 circuits would require higher capacity than the modern equivalent of the existing conductors:

to supply the load demand at Hawera and Waverley for an outage of the 110 kV Hawera-Stratford-1 circuit; and

if a 135 MW wind farm at Waverley becomes a committed project.

• a modern equivalent conductor (such as Wolf) is adequate for the 110 kV Bunnythorpe-Marton-Wanganui 1 and 2 circuits. In some cases, planned outages may need to be coordinated with Hawera generation to avoid overloading of these circuits.

There is a need to upgrade the 110 kV Bunnythorpe-Marton-Wanganui 1 & 2 conductors if the connection of a 135 MW wind farm at Waverley is committed. This is to remove the thermal overload issue on the 110 kV BPE-MTN-WGN circuit when the other circuit is on outage and to avoid constraining the Hawera generation.

Needs Identification with Long List of Options © Transpower New Zealand Limited 2009. All rights reserved. 14

Page 19: Home — Electricity Authority

Appendix A

Appendix A – Summary of the 110 kV Conductor Assessment Reports

In 2008 Transpower commissioned two reports that identified that the condition of the conductor on the 110 kV circuits between Bunnythorpe and Stratford were degraded to the extent that they required replacement with modern equivalent conductor by 2009. The highlights of the condition assessment reports are summarised below.

The WGN-SFD A line conductor assessment report by Mike Taylor of Linetech Consulting of 4 May 2008 (copy attached) refers to:

• Conductor samples from the WGN-SFD A line to be at and beyond Transpower replacement criteria in 2003,

• In 2004 Engineer Services concluded that re-conductoring could be deferred until 2009, and

• Conductor samples from 2007 were found to be further degraded than the 2003 samples. Conductor diameters in some locations have reduced so much that special joints are now required for jointing.

The BPE-WGN B line conductor assessment report by Mike Taylor of Linetech Consulting of 4 May 2008 (copy attached) refers to:

• The conductor on the BPE-WGN B line was found to be at and beyond Transpower replacement criteria following aerial surveys in 2006,

• The summary of corrosion sites on the BPE-MTN section counts 71 defects. 54 of these defects were proposed to not be repaired as the 're-conductoring project is imminent', and

The summary of corrosion sites on the MTN-WGN section counts 124 defects. 104 of these defects were proposed to not be repaired as the 're-conductoring project is imminent'.

Needs Identification with Long List of Options © Transpower New Zealand Limited 2009. All rights reserved. 15

Page 20: Home — Electricity Authority

Needs Identification with Long List of Options © Transpower New Zealand Limited 2009. All rights reserved. 16

Appendix B – Modern Equivalent Conductor Copper circuits are not replaced with more copper as a general policy of Transpower’s (see TP.GL 03.02 Issue 1 1/Oct/2001).

The copper conductor of the 110 kV line between Stratford and Wanganui is 19/2.34 with a winter current rating of 325 amps. Therefore the copper circuits from Stratford to Wanganui would generally be replaced with a ‘modern equivalent’ aluminium conductor e.g. Coyote ACSR-AC.

The conductors in Table B-1 are sorted in order of decreasing resistance and show where the copper conductors sit next to their approved aluminium counterparts.

Because the 110 kV lines run along the coast it has also been suggested that the ‘all aluminium’ AAAC should be considered as they are not so susceptible to coastal corrosion (the steel core rusting out) as are the ‘aluminium core steel reinforced’ ACSR conductors.

Table B-1: Transmission conductors ranked by resistance.

Appendix B

Winter/Summer @ 50oC

Winter/Summer @ 75°C

Winter/Summer @ 90°C

Conductor Type DC ohm/km

diameter (mm) GMR A MVA A MVA A MVA

mink acsr-gz gz 0.45354 11.0 4.5 223/182 43/35 291/264 56/50 322/299 61/57

mink acsr-ac ac 0.42948 11.0 4.5 229/188 44/36 299/271 57/52 331/307 63/59

dog acsr-gz gz 0.27271 14.2 5.8 309/253 59/48 404/367 77/70 447/416 85/79

Cu 7/3.45 cu 0.27260 10.4 3.8 283/232 54/44 370/336 71/64 410/381 78/73

hyena acsr-gz gz 0.27042 14.6 6.0 313/256 60/49 409/371 78/71 453/421 86/80

hyena acsr-ac ac 0.25398 14.6 6.0 323265 62/50 422/383 81/73 468/434 89/83

weke AAC 1350 aaac 0.23407 14.2 5.1 334/273 64/52 436/396 83/75 483/449 92/86

Cu 19/2.34 cu 0.22190 11.7 4.4 325/266 62/51 425/385 81/73 471/437 90/83

coyote acsr-gz gz 0.21888 15.9 6.6 357/292 68/56 467/424 89/81 517/480 99/92

coyote acsr-ac ac 0.20820 15.9 6.6 366/300 70/57 479/434 91/83 530/492 101/94

Cu 19/2.57 cu 0.18400 12.8 4.9 366/300 70/57 479/435 91/83 531/493 101/94

wolf acsr-gz gz 0.18257 18.1 7.5 406/333 77/63 531/482 101/92 589/547 112/104

wolf acsr-ac ac 0.16925 18.1 7.5 422/345 80/66 552/501 105/95 611/568 117/108

lutetium aaac aaac 0.16310 17.5 6.6 426/349 81/67 558/506 106/97 618/575 118/110

neon aaac 1120 aaac 0.14204 18.8 7.1 466/381 89/73 610/554 116/106 677/629 129/120

Nobelium aaac aaac 0.09738 22.8 8.7 595/488 113/93 781/709 149/135 866/805 165/153

goat acsr-gz gz 0.08898 26.0 10.7 647/530 123/101 848/770 162/147 940/874 179/167

Wolf ACSR-GZ (Aluminium Clad Steel Reinforced) conductors used between Bunnythorpe and Wanganui, were galvanised (GZ) but are now Aluminium Coated (ASCR-AC). As a fortuitous result there is a slight capacity increase e.g. 2.5 MVA.

Work done to date has identified conductor capacities up to that of Nobelium for the Taranaki copper replacement conductor. The above table shows Nobelium has additional capacity compared to the ‘modern equivalent’ conductor being roughly half the resistance per kilometre and having nearly twice the ampere rating of Cu 19/2.34. Therefore a full Grid Upgrade Plan (GUP) process would be required before using such conductor.

Page 21: Home — Electricity Authority

ppendix C

ds Identification with Long List of Options © Transpower New Zealand Limited 2009. All rights reserved. 17

Appendix C – Demand Forecast and Diversity Factors CODE POINT OF

SUPPLY Peak

Region PF

Peak Island

PF

Summer Island PF

Peak Region

Diversity

Peak Island

Diversity

Summer Peak

Diversity 2010 2011 2012 2013 2014 2015 2016 2017 2018 2019 2020 2021 2022 2023 2024 2025

BPE_33 Bunnythorpe 33kV 0.967 0.962 0.965 97.74% 91.62% 79.84% 91.8 96.4 97.5 99.2 106.0 107.0 107.4 107.7 109.1 110.5 111.9 113.0 114.2 115.3 116.4 117.5

BPE_55 Bunnythorpe NZR 0.933 0.980 0.959 21.58% 17.65% 27.40% 5.5 5.6 5.7 5.8 5.8 5.9 5.9 6.0 6.1 6.1 6.2 6.2 6.2 6.3 6.3 6.4

BRK Brunswick 0.949 0.951 0.944 76.77% 94.30% 79.00% 37.9 38.5 39.0 39.6 40.2 40.8 41.4 42.1 42.7 43.3 44.0 44.6 45.3 46.0 46.7 47.4

MTN Marton 0.966 0.968 0.961 99.63% 94.00% 88.33% 15.5 15.6 15.7 15.8 15.9 16.1 16.2 16.3 16.4 16.5 16.7 16.8 16.9 17.0 17.2 17.3

WGN Wanganui 0.954 0.959 0.945 66.13% 85.71% 76.14% 45.4 48.2 50.2 52.2 53.6 54.4 55.0 55.7 56.3 56.8 57.2 57.6 58.1 58.5 58.9 59.4

CST_33 Carrington St 33kV 0.944 0.953 0.946 95.92% 95.63% 82.10% 53.9 55.1 56.3 57.6 58.5 59.4 60.2 61.2 62.1 63.0 63.9 64.9 65.9 66.9 67.9 68.9

HUI Huirangi 0.902 0.910 0.899 89.61% 77.61% 82.46% 17.8 18.1 18.4 18.6 18.9 19.2 19.5 19.8 20.1 20.4 20.7 20.9 21.2 21.4 21.7 22.0

HWA_33/1 Hawera 0.943 0.956 0.977 92.21% 96.16% 94.00% 44.2 45.3 46.4 47.6 48.7 49.9 51.1 52.3 53.5 54.2 54.8 55.5 56.2 56.9 57.6 58.3

HWA_33/2 Hawera (Kupe) 0.943 0.956 0.977 92.21% 96.16% 94.00% 12.2 12.2 12.2 12.2 12.2 12.2 12.2 12.2 12.2 12.2 12.2 12.2 12.2 12.2 12.2 12.2

MNI Motunui 1.000 1.000 1.000 21.48% 100.00% 100.00% 11.0 11.0 11.0 11.0 11.0 11.0 11.0 11.0 11.0 11.0 11.0 11.0 11.0 11.0 11.0 11.0

MRA Moturoa 0.975 0.982 0.975 94.75% 95.51% 80.52% 20.2 20.7 21.3 21.9 22.5 23.1 23.7 24.3 25.0 25.5 26.0 26.5 27.0 27.6 28.1 28.7

OPK Opunake 0.921 0.978 0.960 57.29% 52.88% 58.91% 11.2 11.2 11.3 11.3 11.4 11.4 11.5 11.5 9.6 7.6 7.6 7.6 7.7 7.7 7.8 7.8

SFD_33 Stratford 33kV 0.935 0.959 0.936 92.97% 81.70% 84.95% 26.6 27.4 28.1 28.9 29.6 30.4 31.1 31.9 32.7 26.9 26.4 26.5 26.7 26.8 26.9 27.1

SFD_220 Stratford 220kV 0.935 0.959 0.936 50.00% 81.70% 84.95% 10.9 10.9 10.9 11.0 11.0 11.0 11.0 11.1 11.1 11.1 11.2 11.2 11.2 11.2 11.3 11.3

TMN Taumarunui NZR 0.933 0.980 0.959 21.58% 17.65% 27.40% 8.5 8.6 8.7 8.8 8.8 8.9 8.9 8.9 8.9 8.9 9.0 9.0 9.0 9.0 9.0 9.0

WVY Waverley 0.931 0.960 0.958 68.98% 84.64% 69.13% 4.1 4.2 4.3 4.4 4.5 4.6 4.7 4.8 4.9 4.9 5.0 5.0 5.1 5.1 5.2 5.2

CODE POINT OF SUPPLY

Peak Region

PF

Peak Island

PF

Summer Island PF

Peak Region

Diversity

Peak Island

Diversity

Summer Peak

Diversity 2026 2027 2028 2029 2030 2031 2032 2033 2034 2035 2036 2037 2038 2039 2040

A

Nee

BPE_33 Bunnythorpe 33kV 0.967 0.962 0.965 97.74% 91.62% 79.84% 118.7 119.9 121.0 122.2 123.4 124.6 125.8 127.0 128.2 129.5 130.8 132.1 133.4 134.7 136.0

BPE_55 Bunnythorpe NZR 0.933 0.980 0.959 21.58% 17.65% 27.40% 6.4 6.5 6.5 6.5 6.6 6.6 6.7 6.7 6.8 6.8 6.9 6.9 7.0 7.0 7.1

BRK Brunswick 0.949 0.951 0.944 76.77% 94.30% 79.00% 48.1 48.8 49.5 49.7 49.8 50.0 50.2 50.3 50.5 50.7 50.8 51.0 51.2 51.4 51.6

MTN Marton 0.966 0.968 0.961 99.63% 94.00% 88.33% 17.4 17.6 17.7 17.7 17.8 17.9 17.9 18.0 18.0 18.1 18.2 18.2 18.3 18.4 18.4

WGN Wanganui 0.954 0.959 0.945 66.13% 85.71% 76.14% 59.8 60.3 60.7 60.9 61.1 61.3 61.5 61.7 61.9 62.1 62.3 62.5 62.8 63.0 63.3

CST_33 Carrington St 33kV 0.944 0.953 0.946 95.92% 95.63% 82.10% 69.9 71.0 72.0 72.2 72.5 72.7 73.0 73.3 73.5 73.8 74.1 74.4 74.7 75.0 75.4

HUI Huirangi 0.902 0.910 0.899 89.61% 77.61% 82.46% 22.3 22.5 22.8 22.9 22.9 23.0 23.1 23.2 23.2 23.3 23.4 23.5 23.6 23.7 23.8

HWA_33/1 Hawera 0.943 0.956 0.977 92.21% 96.16% 94.00% 59.1 59.8 60.6 60.6 60.7 60.9 61.0 61.1 61.2 61.3 61.4 61.6 61.7 61.9 62.0

HWA_33/2 Hawera (Kupe) 0.943 0.956 0.977 92.21% 96.16% 94.00% 12.2 12.2 12.2 12.2 12.2 12.2 12.2 12.2 12.2 12.2 12.2 12.2 12.2 12.2 12.2

MNI Motunui 1.000 1.000 1.000 21.48% 100.00% 100.00% 11.0 11.0 11.0 11.0 11.0 11.0 11.0 11.0 11.0 11.0 11.0 11.0 11.0 11.0 11.0

MRA Moturoa 0.975 0.982 0.975 94.75% 95.51% 80.52% 29.2 29.8 30.4 30.5 30.6 30.7 30.8 30.9 31.0 31.1 31.2 31.3 31.5 31.6 31.7

OPK Opunake 0.921 0.978 0.960 57.29% 52.88% 58.91% 7.8 7.9 7.9 7.9 8.0 8.0 8.0 8.0 8.0 8.1 8.1 8.1 8.1 8.2 8.2

SFD_33 Stratford 33kV 0.935 0.959 0.936 92.97% 81.70% 84.95% 27.2 27.3 27.5 27.5 27.6 27.7 27.7 27.8 27.9 27.9 28.0 28.1 28.2 28.3 28.4

SFD_220 Stratford 220kV 0.935 0.959 0.936 50.00% 81.70% 84.95% 11.3 11.4 11.4 11.4 11.4 11.4 11.4 11.4 11.4 11.4 11.4 11.4 11.4 11.4 11.4

TMN Taumarunui NZR 0.933 0.980 0.959 21.58% 17.65% 27.40% 9.0 9.0 9.1 9.1 9.1 9.2 9.2 9.3 9.3 9.3 9.4 9.4 9.5 9.5 9.6

WVY Waverley 0.931 0.960 0.958 68.98% 84.64% 69.13% 5.3 5.3 5.4 5.4 5.4 5.5 5.5 5.5 5.5 5.6 5.6 5.6 5.7 5.7 5.7

Page 22: Home — Electricity Authority

Appendix D

Appendix D – DigSilent Simulation Results

D.1 110 kV HWA-SFD-1 circuit South Flow

PowerFactory 13.2.333

Project:

Graphic: Taranaki

Date: 6/5/2009

Annex:

Load Flow BalancedNodesLine-Line Voltage, Magnitude [kV]Voltage, Magnitude [p.u.]

BranchesActive Power [MW]Reactive Power [Mvar]Maximum Loading [%]

31.7km

27.9km

47.6km

35.4km

26.6km

SF10S N

2010 Summer - Maximum South FlowNormal Operating Condition

-82.3 MW35.5 Mvar170.4 %0.452 kA

0.0 MW0.0 Mvar

0.0 %0.000 kA

-11.4 MW-8.6 Mvar22.3 %

0.074 kA

-12.3 MW-8.8 Mvar23.7 %

0.079 kA

25.5 MW-0.4 Mvar49.2 %

0.131 kA

-5.4 MW-7.5 Mvar14.6 %

0.049 kA

-4.4 MW-7.3 Mvar13.4 %

0.045 kA

-0.0 MW20.5 Mvar22.3 %

0.103 kA

-0.0 MW10.4 Mvar11.7 %

0.052 kA

-28.3 MW-0.7 Mvar54.8 %

0.146 kA

30.2 MW2.7 Mvar51.0 %

0.078 kA

-30.1 MW-1.8 Mvar51.0 %

0.155 kA

1

30.2 MW2.7 Mvar51.0 %

0.078 kA

-30.1 MW-1.8 Mvar51.0 %

0.155 kA

1

30.2 MW2.7 Mvar51.0 %

0.078 kA

-30.1 MW-1.8 Mvar51.0 %

0.155 kA

1

-232.7 MW20.8 Mvar

33.0 %0.599 kA

235.3 MW-12.7 Mvar33.0 %

0.601 kA

168.3 MW2.9 Mvar67.1 %

0.421 kA

-164.9 MW4.0 Mvar67.1 %

0.421 kA

-28.

8 M

W-0

.5 M

var

29.2

%0.

146

kA

171.3 MW2.8 Mvar70.2 %

0.428 kA

-167.7 MW4.5 Mvar70.2 %

0.428 kA

171.3 MW2.8 Mvar68.3 %

0.428 kA

-167.7 MW4.5 Mvar68.3 %

0.428 kA

-232.2 MW20.7 Mvar

32.9 %0.597 kA

234.8 MW-12.7 Mvar32.9 %

0.600 kA

-0.0 MW20.5 Mvar22.3 %

0.103 kA

100.1 MW-0.2 Mvar70.5 %

0.250 kA

-99.8 MW5.8 Mvar70.5 %

0.500 kA

-0.0

MW

0.0

Mva

r70

.5 %

0.00

0 kA

52

HW

A-R

72

BRK/BRK220226.32 kV1.03 p.u.

BPE/BPE110112.32 kV1.02 p.u.

BPE/BPE220225.36 kV1.02 p.u.

PTA_110115.50 kV1.05 p.u.

MTN_110_2 MTN_110_1

WVY/WVY110112.19 kV1.02 p.u.

WGN/WGN110109.83 kV1.00 p.u.

WAA/WAA110114.86 kV1.04 p.u.

HWA/HWA110114.49 kV1.04 p.u.

SFD/SFD110115.48 kV1.05 p.u.

SFD/SFD220231.00 kV1.05 p.u. D

IgSI

LEN

T

PowerFactory 13.2.333

Project:

Graphic: Taranaki

Date: 6/5/2009

Annex:

Load Flow BalancedNodesLine-Line Voltage, Magnitude [kV]Voltage, Magnitude [p.u.]

BranchesActive Power [MW]Reactive Power [Mvar]Maximum Loading [%]

31.7km

27.9km

47.6km

35.4km

26.6km

SF10S oR

2010 Summer - Maximum South FlowReactor Bypassed

-88.8 MW38.8 Mvar184.3 %0.489 kA

35.3 MW-1.1 Mvar

0.0 %0.178 kA

-8.4 MW-9.9 Mvar20.4 %

0.068 kA

-9.3 MW-10.2 Mvar21.7 %

0.072 kA

31.7 MW-2.6 Mvar61.5 %

0.164 kA

-2.5 MW-8.9 Mvar14.6 %

0.049 kA

-1.4 MW-8.6 Mvar13.9 %

0.046 kA

-0.0 MW20.5 Mvar22.3 %

0.103 kA

-0.0 MW10.8 Mvar12.1 %

0.054 kA

-34.6 MW1.5 Mvar67.1 %

0.178 kA

28.3 MW3.4 Mvar48.0 %

0.073 kA

-28.2 MW-2.6 Mvar48.0 %

0.146 kA

1

28.3 MW3.4 Mvar48.0 %

0.073 kA

-28.2 MW-2.6 Mvar48.0 %

0.146 kA

1

28.3 MW3.4 Mvar48.0 %

0.073 kA

-28.2 MW-2.6 Mvar48.0 %

0.146 kA

1

-230.1 MW19.8 Mvar

32.6 %0.592 kA

232.7 MW-12.3 Mvar32.6 %

0.594 kA

166.5 MW2.7 Mvar66.4 %

0.416 kA

-163.1 MW3.7 Mvar66.4 %

0.416 kA

-0.0

MW

-0.0

Mva

r0.

0 %

0.00

0 kA

169.4 MW2.6 Mvar69.4 %

0.423 kA

-165.9 MW4.2 Mvar69.4 %

0.423 kA

169.4 MW2.6 Mvar67.5 %

0.423 kA

-165.9 MW4.2 Mvar67.5 %

0.423 kA

-229.7 MW19.8 Mvar

32.5 %0.591 kA

232.2 MW-12.3 Mvar32.5 %

0.593 kA

-0.0 MW20.5 Mvar22.3 %

0.103 kA

105.3 MW-0.8 Mvar74.2 %

0.263 kA

-105.0 MW6.9 Mvar74.2 %

0.526 kA

-0.0

MW

-0.0

Mva

r74

.2 %

0.00

0 kA

52

HW

A-R

72

BRK/BRK220226.36 kV1.03 p.u.

BPE/BPE110112.26 kV1.02 p.u.

BPE/BPE220225.36 kV1.02 p.u.

PTA_110115.50 kV1.05 p.u.

MTN_110_2 MTN_110_1

WVY/WVY110112.22 kV1.02 p.u.

WGN/WGN110109.76 kV1.00 p.u.

WAA/WAA110114.83 kV1.04 p.u.

HWA/HWA110114.46 kV1.04 p.u.

SFD/SFD110115.52 kV1.05 p.u.

SFD/SFD220231.00 kV1.05 p.u. D

IgSI

LEN

T

Needs Identification with Long List of Options © Transpower New Zealand Limited 2009. All rights reserved. 18

Page 23: Home — Electricity Authority

Appendix D

PowerFactory 13.2.333

Project:

Graphic: Taranaki

Date: 6/5/2009

Annex:

Load Flow BalancedNodesLine-Line Voltage, Magnitude [kV]Voltage, Magnitude [p.u.]

BranchesActive Power [MW]Reactive Power [Mvar]Maximum Loading [%]

31.7km

27.9km

47.6km

35.4km

26.6km

SF10S oL4

2010 Summer - Maximum South Flow110kV BPE-MTN-WGN out

-84.0 MW34.6 Mvar173.2 %0.459 kA

0.0 MW0.0 Mvar

0.0 %0.000 kA

-22.2 MW-16.4 Mvar43.8 %

0.146 kA

27.1 MW2.7 Mvar53.6 %

0.142 kA

-8.3 MW-12.1 Mvar23.6 %

0.079 kA

-0.0 MW20.5 Mvar22.3 %

0.103 kA

-0.0 MW13.1 Mvar14.5 %

0.065 kA

-30.0 MW-3.7 Mvar59.2 %

0.157 kA

29.8 MW2.8 Mvar50.3 %

0.077 kA

-29.7 MW-2.0 Mvar50.3 %

0.153 kA1

29.8 MW2.8 Mvar50.3 %

0.077 kA

-29.7 MW-2.0 Mvar50.3 %

0.153 kA1

29.8 MW2.8 Mvar50.3 %

0.077 kA

-29.7 MW-2.0 Mvar50.3 %

0.153 kA1

-232.1 MW20.6 Mvar

32.9 %0.597 kA

234.7 MW-12.6 Mvar32.9 %

0.599 kA

167.9 MW2.9 Mvar66.9 %

0.420 kA

-164.4 MW4.0 Mvar66.9 %

0.420 kA

-30.

6 M

W-3

.8 M

var

31.4

%0.

157

kA

170.8 MW2.8 Mvar70.0 %

0.427 kA

-167.3 MW4.4 Mvar70.0 %

0.427 kA

170.8 MW2.8 Mvar68.1 %

0.427 kA

-167.3 MW4.4 Mvar68.1 %

0.427 kA

-231.6 MW20.5 Mvar

32.8 %0.596 kA

234.2 MW-12.6 Mvar32.8 %

0.598 kA

-0.0 MW20.5 Mvar22.3 %

0.103 kA

101.4 MW0.8 Mvar71.4 %

0.253 kA

-101.1 MW4.9 Mvar71.4 %

0.506 kA

-0.0

MW

0.0

Mva

r71

.4 %

0.00

0 kA

52

HW

A-R

72

BRK/BRK220226.34 kV1.03 p.u.

BPE/BPE110112.31 kV1.02 p.u.

BPE/BPE220225.36 kV1.02 p.u.

PTA_110115.50 kV1.05 p.u.

MTN_110_2 MTN_110_1

WVY/WVY110110.79 kV1.01 p.u.

WGN/WGN110107.67 kV0.98 p.u.

WAA/WAA110114.61 kV1.04 p.u.

HWA/HWA110114.25 kV1.04 p.u.

SFD/SFD110115.42 kV1.05 p.u.

SFD/SFD220231.00 kV1.05 p.u. D

IgSI

LEN

T

PowerFactory 13.2.333

Project:

Graphic: Taranaki

Date: 6/5/2009

Annex:

Load Flow BalancedNodesLine-Line Voltage, Magnitude [kV]Voltage, Magnitude [p.u.]

BranchesActive Power [MW]Reactive Power [Mvar]Maximum Loading [%]

31.7km

27.9km

47.6km

35.4km

26.6km

SF10W N

2010 Winter - Maximum South FlowNormal Operating Condition

-88.2 MW32.4 Mvar147.6 %0.478 kA

0.0 MW0.0 Mvar

0.0 %0.000 kA

-6.8 MW-8.2 Mvar13.9 %

0.057 kA

-7.8 MW-8.5 Mvar15.1 %

0.061 kA

32.1 MW-1.9 Mvar51.5 %

0.167 kA

-0.1 MW-7.1 Mvar

9.3 %0.038 kA

1.1 MW-6.8 Mvar

9.0 %0.037 kA

-0.0 MW20.5 Mvar22.5 %

0.104 kA

-0.0 MW14.4 Mvar14.5 %

0.073 kA

-34.9 MW0.6 Mvar56.0 %

0.182 kA

29.8 MW2.9 Mvar47.7 %

0.078 kA

-29.7 MW-2.0 Mvar47.7 %

0.156 kA

1

29.8 MW2.9 Mvar47.7 %

0.078 kA

-29.7 MW-2.0 Mvar47.7 %

0.156 kA

1

29.8 MW2.9 Mvar47.7 %

0.078 kA

-29.7 MW-2.0 Mvar47.7 %

0.156 kA

1

-283.5 MW21.6 Mvar

37.1 %0.743 kA

287.5 MW-1.1 Mvar37.1 %

0.744 kA

204.1 MW20.9 Mvar67.3 %

0.513 kA

-198.9 MW-3.4 Mvar67.3 %

0.515 kA

-35.

7 M

W0.

1 M

var

36.4

%0.

182

kA

207.7 MW21.0 Mvar69.7 %

0.522 kA

-202.4 MW-3.0 Mvar69.7 %

0.524 kA

207.7 MW21.0 Mvar68.5 %

0.522 kA

-202.4 MW-3.0 Mvar68.5 %

0.524 kA

-282.9 MW21.5 Mvar

37.0 %0.741 kA

286.9 MW-1.1 Mvar37.0 %

0.743 kA

-0.0 MW20.5 Mvar22.5 %

0.104 kA

106.0 MW6.3 Mvar70.6 %

0.265 kA

-105.7 MW-0.1 Mvar70.6 %

0.530 kA

-0.0

MW

0.0

Mva

r70

.6 %

0.00

0 kA

52

HW

A-R

72

BRK/BRK220223.07 kV1.01 p.u.

BPE/BPE110110.13 kV1.00 p.u.

BPE/BPE220221.03 kV1.00 p.u.

PTA_110114.84 kV1.04 p.u.

MTN_110_2 MTN_110_1

WVY/WVY110110.83 kV1.01 p.u.

WGN/WGN110108.18 kV0.98 p.u.

WAA/WAA110113.82 kV1.03 p.u.

HWA/HWA110113.46 kV1.03 p.u.

SFD/SFD110115.12 kV1.05 p.u.

SFD/SFD220231.00 kV1.05 p.u. D

IgSI

LEN

T

Needs Identification with Long List of Options © Transpower New Zealand Limited 2009. All rights reserved. 19

Page 24: Home — Electricity Authority

Appendix D

PowerFactory 13.2.333

Project:

Graphic: Taranaki

Date: 6/5/2009

Annex:

Load Flow BalancedNodesLine-Line Voltage, Magnitude [kV]Voltage, Magnitude [p.u.]

BranchesActive Power [MW]Reactive Power [Mvar]Maximum Loading [%]

31.7km

27.9km

47.6km

35.4km

26.6km

SF10W oR

2010 Winter - Maximum South FlowReactor Bypassed

-96.2 MW36.4 Mvar161.6 %0.524 kA

43.7 MW-2.1 Mvar

0.0 %0.223 kA

-3.2 MW-10.2 Mvar13.9 %

0.057 kA

-4.3 MW-10.4 Mvar14.8 %

0.060 kA

39.7 MW-4.7 Mvar64.1 %

0.208 kA

3.5 MW-8.9 Mvar12.6 %

0.051 kA

4.6 MW-8.7 Mvar12.9 %

0.052 kA

-0.0 MW20.5 Mvar22.5 %

0.104 kA

-0.0 MW14.4 Mvar14.5 %

0.073 kA

-42.6 MW3.3 Mvar68.6 %

0.223 kA

27.6 MW3.9 Mvar44.4 %

0.073 kA

-27.5 MW-3.1 Mvar44.4 %

0.145 kA1

27.6 MW3.9 Mvar44.4 %

0.073 kA

-27.5 MW-3.1 Mvar44.4 %

0.145 kA1

27.6 MW3.9 Mvar44.4 %

0.073 kA

-27.5 MW-3.1 Mvar44.4 %

0.145 kA1

-280.4 MW20.2 Mvar

36.7 %0.734 kA

284.3 MW-0.5 Mvar36.7 %

0.736 kA

201.9 MW20.6 Mvar66.6 %

0.507 kA

-196.8 MW-3.8 Mvar66.6 %

0.509 kA

-0.0

MW

-0.0

Mva

r0.

0 %

0.00

0 kA

205.4 MW20.7 Mvar68.9 %

0.516 kA

-200.2 MW-3.4 Mvar68.9 %

0.518 kA

205.4 MW20.7 Mvar67.7 %

0.516 kA

-200.2 MW-3.4 Mvar67.7 %

0.518 kA

-279.8 MW20.1 Mvar

36.6 %0.733 kA

283.7 MW-0.5 Mvar36.6 %

0.734 kA

-0.0 MW20.5 Mvar22.5 %

0.104 kA

112.5 MW5.8 Mvar74.9 %

0.281 kA

-112.1 MW1.1 Mvar74.9 %

0.562 kA

-0.0

MW

0.0

Mva

r74

.9 %

0.00

0 kA

52

HW

A-R

72

BRK/BRK220223.13 kV1.01 p.u.

BPE/BPE110110.03 kV1.00 p.u.

BPE/BPE220221.03 kV1.00 p.u.

PTA_110114.77 kV1.04 p.u.

MTN_110_2 MTN_110_1

WVY/WVY110110.75 kV1.01 p.u.

WGN/WGN110108.01 kV0.98 p.u.

WAA/WAA110113.75 kV1.03 p.u.

HWA/HWA110113.38 kV1.03 p.u.

SFD/SFD110115.16 kV1.05 p.u.

SFD/SFD220231.00 kV1.05 p.u. D

IgSI

LEN

T

PowerFactory 13.2.333

Project:

Graphic: Taranaki

Date: 6/5/2009

Annex:

Load Flow BalancedNodesLine-Line Voltage, Magnitude [kV]Voltage, Magnitude [p.u.]

BranchesActive Power [MW]Reactive Power [Mvar]Maximum Loading [%]

31.7km

27.9km

47.6km

35.4km

26.6km

SF10W oL4

2010 Winter - Maximum South Flow110kV BPE-MTN-WGN out

-88.6 MW29.7 Mvar147.2 %0.477 kA

0.0 MW0.0 Mvar

0.0 %0.000 kA

-14.3 MW-16.3 Mvar28.7 %

0.116 kA

32.4 MW0.6 Mvar52.6 %

0.171 kA

1.3 MW-11.5 Mvar15.5 %

0.063 kA

-0.0 MW20.5 Mvar22.6 %

0.105 kA

-0.0 MW14.4 Mvar14.5 %

0.073 kA

-35.3 MW-2.0 Mvar57.4 %

0.186 kA

29.8 MW3.1 Mvar47.7 %

0.078 kA

-29.6 MW-2.3 Mvar47.7 %

0.156 kA

1

29.8 MW3.1 Mvar47.7 %

0.078 kA

-29.6 MW-2.3 Mvar47.7 %

0.156 kA

1

29.8 MW3.1 Mvar47.7 %

0.078 kA

-29.6 MW-2.3 Mvar47.7 %

0.156 kA

1

-283.4 MW21.4 Mvar

37.1 %0.743 kA

287.4 MW-1.0 Mvar37.1 %

0.744 kA

204.0 MW20.9 Mvar67.3 %

0.513 kA

-198.9 MW-3.5 Mvar67.3 %

0.515 kA

-36.

1 M

W-2

.5 M

var

37.2

%0.

186

kA

207.6 MW21.1 Mvar69.6 %

0.522 kA

-202.3 MW-3.1 Mvar69.6 %

0.524 kA

207.6 MW21.1 Mvar68.5 %

0.522 kA

-202.3 MW-3.1 Mvar68.5 %

0.524 kA

-282.8 MW21.3 Mvar

37.0 %0.741 kA

286.8 MW-1.0 Mvar37.0 %

0.742 kA

-0.0 MW20.5 Mvar22.6 %

0.105 kA

106.1 MW8.3 Mvar70.8 %

0.266 kA

-105.8 MW-2.1 Mvar70.8 %

0.531 kA

-0.0

MW

-0.0

Mva

r70

.8 %

0.00

0 kA

52

HW

A-R

72

BRK/BRK220223.06 kV1.01 p.u.

BPE/BPE110110.09 kV1.00 p.u.

BPE/BPE220221.00 kV1.00 p.u.

PTA_110114.43 kV1.04 p.u.

MTN_110_2 MTN_110_1

WVY/WVY110109.54 kV1.00 p.u.

WGN/WGN110106.34 kV0.97 p.u.

WAA/WAA110113.41 kV1.03 p.u.

HWA/HWA110113.04 kV1.03 p.u.

SFD/SFD110115.01 kV1.05 p.u.

SFD/SFD220231.00 kV1.05 p.u. D

IgSI

LEN

T

Needs Identification with Long List of Options © Transpower New Zealand Limited 2009. All rights reserved. 20

Page 25: Home — Electricity Authority

Appendix D

PowerFactory 13.2.333

Project:

Graphic: Taranaki

Date: 6/5/2009

Annex:

Load Flow BalancedNodesLine-Line Voltage, Magnitude [kV]Voltage, Magnitude [p.u.]Voltage, Angle [deg]

BranchesActive Power [MW]Reactive Power [Mvar]Maximum Loading [%]

External GridActive Power [MW]Reactive Power [Mvar]

31.7km

27.9km

47.6km

35.4km

26.6km

SF30S N

2030 Summer - Maximum South FlowNormal Operating Condition

-95.5 MW12.7 Mvar190.1 %0.505 kA

0.0 MW0.0 Mvar

0.0 %0.000 kA

-20.1 MW-14.3 Mvar

39.1 %0.130 kA

-21.2 MW-14.6 Mvar

40.8 %0.136 kA

22.1 MW-4.1 Mvar44.7 %

0.119 kA

-13.2 MW-12.7 Mvar

29.5 %0.098 kA

-12.0 MW-12.4 Mvar

27.8 %0.093 kA

-0.0 MW0.0 Mvar

0.2 %0.000 kA

-0.0 MW14.4 Mvar16.4 %

0.075 kA

-25.9 MW2.6 Mvar52.1 %

0.138 kA

35.9 MW6.5 Mvar61.4 %

0.093 kA

-35.8 MW-5.3 Mvar61.4 %

0.187 kA1

35.9 MW6.5 Mvar61.4 %

0.093 kA

-35.8 MW-5.3 Mvar61.4 %

0.187 kA1

35.9 MW6.5 Mvar61.4 %

0.093 kA

-35.8 MW-5.3 Mvar61.4 %

0.187 kA1

-227.5 MW22.2 Mvar32.3 %

0.585 kA

230.0 MW-15.2 Mvar

32.3 %0.588 kA

167.9 MW2.8 Mvar66.9 %

0.420 kA

-164.5 MW4.1 Mvar66.9 %

0.420 kA

-26.

3 M

W2.

7 M

var

27.7

%0.

139

kA

170.9 MW2.6 Mvar70.0 %

0.427 kA

-167.3 MW4.5 Mvar70.0 %

0.427 kA

170.9 MW2.7 Mvar68.1 %

0.427 kA

-167.3 MW4.5 Mvar68.1 %

0.427 kA

-227.0 MW22.2 Mvar32.2 %

0.584 kA

229.5 MW-15.2 Mvar

32.2 %0.587 kA

G~

0.0 MW17.4 Mvar17.4 %

0.091 kA

195.86 MW87.25 Mvar

-0.0 MW0.0 Mvar

0.2 %0.000 kA

116.0 MW22.7 Mvar83.2 %

0.295 kA

-115.6 MW-15.2 Mvar

83.2 %0.589 kA

-0.0

MW

0.0

Mva

r83

.2 %

0.00

0 kA

52

HW

A-R

72

BRK/BRK220226.35 kV1.03 p.u.-7.20 deg

BPE/BPE110112.06 kV1.02 p.u.

-14.40 deg

BPE/BPE220225.62 kV1.03 p.u.

-12.53 deg

PTA_110111.42 kV1.01 p.u.-9.02 deg

MTN_110_2 MTN_110_1 109.29 kV0.99 p.u.

-15.28 deg

WVY/WVY110108.86 kV0.99 p.u.

-13.18 deg

WGN/WGN110107.47 kV0.98 p.u.

-15.63 deg

WAA/WAA110110.00 kV1.00 p.u.-8.70 deg

HWA/HWA110110.00 kV1.00 p.u.-8.70 deg

SFD/SFD110114.23 kV1.04 p.u.-3.20 deg

SFD/SFD220231.00 kV1.05 p.u.0.00 deg

DIg

SILE

NT

PowerFactory 13.2.333

Project:

Graphic: Taranaki

Date: 6/5/2009

Annex:

Load Flow BalancedNodesLine-Line Voltage, Magnitude [kV]Voltage, Magnitude [p.u.]Voltage, Angle [deg]

BranchesActive Power [MW]Reactive Power [Mvar]Maximum Loading [%]

External GridActive Power [MW]Reactive Power [Mvar]

31.7km

27.9km

47.6km

35.4km

26.6km

SF30S oR

2030 Summer - Maximum South FlowReactor Bypassed

-101.2 MW15.9 Mvar202.3 %0.538 kA

32.1 MW-5.3 Mvar

0.0 %0.171 kA

-17.5 MW-16.1 Mvar

37.7 %0.126 kA

-18.6 MW-16.4 Mvar

39.4 %0.131 kA

27.6 MW-7.1 Mvar57.0 %

0.152 kA

-10.5 MW-14.5 Mvar

28.9 %0.096 kA

-9.4 MW-14.2 Mvar

27.5 %0.092 kA

-0.0 MW0.0 Mvar

0.2 %0.000 kA

-0.0 MW14.4 Mvar16.4 %

0.075 kA

-31.4 MW5.6 Mvar64.1 %

0.170 kA

34.3 MW7.4 Mvar59.0 %

0.090 kA

-34.2 MW-6.3 Mvar59.0 %

0.179 kA

1

34.3 MW7.4 Mvar59.0 %

0.090 kA

-34.2 MW-6.3 Mvar59.0 %

0.179 kA

1

34.3 MW7.4 Mvar59.0 %

0.090 kA

-34.2 MW-6.3 Mvar59.0 %

0.179 kA

1

-225.4 MW21.3 Mvar32.0 %

0.579 kA

227.8 MW-14.7 Mvar

32.0 %0.582 kA

166.4 MW2.7 Mvar66.4 %

0.416 kA

-163.0 MW3.8 Mvar66.4 %

0.416 kA

-0.0

MW

-0.0

Mva

r0.

0 %

0.00

0 kA

169.4 MW2.6 Mvar69.4 %

0.423 kA

-165.9 MW4.2 Mvar69.4 %

0.423 kA

169.4 MW2.6 Mvar67.5 %

0.423 kA

-165.9 MW4.2 Mvar67.5 %

0.423 kA

-224.9 MW21.3 Mvar31.9 %

0.578 kA

227.4 MW-14.7 Mvar

31.9 %0.581 kA

G~

0.0 MW17.0 Mvar17.0 %

0.089 kA

196.61 MW85.99 Mvar

-0.0 MW0.0 Mvar

0.2 %0.000 kA

120.7 MW22.0 Mvar86.3 %

0.307 kA

-120.3 MW-14.0 Mvar

86.3 %0.612 kA

-0.0

MW

-0.0

Mva

r86

.3 %

0.00

0 kA

52

HW

A-R

72

BRK/BRK220226.37 kV1.03 p.u.-7.13 deg

BPE/BPE110111.95 kV1.02 p.u.

-14.19 deg

BPE/BPE220225.60 kV1.03 p.u.

-12.41 deg

PTA_110111.42 kV1.01 p.u.-9.54 deg

MTN_110_2 MTN_110_1 109.11 kV0.99 p.u.

-14.87 deg

WVY/WVY110108.51 kV0.99 p.u.

-11.84 deg

WGN/WGN110107.23 kV0.97 p.u.

-15.04 deg

WAA/WAA110110.00 kV1.00 p.u.-9.22 deg

HWA/HWA110110.00 kV1.00 p.u.-9.22 deg

SFD/SFD110114.27 kV1.04 p.u.-3.33 deg

SFD/SFD220231.00 kV1.05 p.u.0.00 deg

DIg

SILE

NT

Needs Identification with Long List of Options © Transpower New Zealand Limited 2009. All rights reserved. 21

Page 26: Home — Electricity Authority

Appendix D

PowerFactory 13.2.333

Project:

Graphic: Taranaki

Date: 6/7/2009

Annex:

Load Flow BalancedNodesLine-Line Voltage, Magnitude [kV]Voltage, Magnitude [p.u.]

BranchesActive Power [MW]Reactive Power [Mvar]Maximum Loading [%]

External GridActive Power [MW]Reactive Power [Mvar]

31.7km

27.9km

47.6km

35.4km

26.6km

SF30S oL4

2030 Summer - Maximum South Flow110kV BPE-MTN-WGN out

-99.1 MW14.7 Mvar197.9 %0.526 kA

0.0 MW0.0 Mvar

0.0 %0.000 kA

-38.2 MW-26.2 Mvar

75.1 %0.250 kA

25.6 MW1.7 Mvar52.4 %

0.139 kA

-21.9 MW-20.1 Mvar

49.7 %0.165 kA

-0.0 MW-0.0 Mvar

0.2 %0.000 kA

-0.0 MW14.4 Mvar16.4 %

0.075 kA

-29.4 MW-3.2 Mvar60.2 %

0.160 kA

35.1 MW6.2 Mvar60.0 %

0.091 kA

-35.0 MW-5.1 Mvar60.0 %

0.182 kA1

35.1 MW6.2 Mvar60.0 %

0.091 kA

-35.0 MW-5.1 Mvar60.0 %

0.182 kA1

35.2 MW6.2 Mvar60.0 %

0.091 kA

-35.0 MW-5.1 Mvar60.0 %

0.182 kA1

-226.4 MW22.1 Mvar32.1 %

0.582 kA

228.9 MW-15.2 Mvar

32.1 %0.585 kA

167.2 MW2.5 Mvar66.6 %

0.418 kA

-163.8 MW4.1 Mvar66.6 %

0.418 kA

-30.

0 M

W-3

.4 M

var

31.9

%0.

159

kA

170.1 MW2.4 Mvar69.7 %

0.425 kA

-166.6 MW4.5 Mvar69.7 %

0.425 kA

170.1 MW2.4 Mvar67.8 %

0.425 kA

-166.6 MW4.5 Mvar67.8 %

0.425 kA

-226.0 MW22.0 Mvar32.0 %

0.581 kA

228.4 MW-15.2 Mvar

32.0 %0.584 kA

G~

0.0 MW25.9 Mvar25.9 %

0.136 kA

197.0 MW85.9 Mvar

-0.0 MW-0.0 Mvar

0.2 %0.000 kA

119.0 MW22.2 Mvar85.2 %

0.303 kA

-118.6 MW-14.4 Mvar

85.2 %0.604 kA

-0.0

MW

0.0

Mva

r85

.2 %

0.00

0 kA

52

HW

A-R

72

BRK/BRK220226.40 kV1.03 p.u.

BPE/BPE110112.11 kV1.02 p.u.

BPE/BPE220225.67 kV1.03 p.u.

PTA_110111.42 kV1.01 p.u.

MTN_110_2 MTN_110_1 103.51 kV0.94 p.u.

WVY/WVY110106.59 kV0.97 p.u.

WGN/WGN110103.71 kV0.94 p.u.

WAA/WAA110110.00 kV1.00 p.u.

HWA/HWA110110.00 kV1.00 p.u.

SFD/SFD110114.25 kV1.04 p.u.

SFD/SFD220231.00 kV1.05 p.u. D

IgSI

LEN

T

PowerFactory 13.2.333

Project:

Graphic: Taranaki

Date: 6/5/2009

Annex:

Load Flow BalancedNodesLine-Line Voltage, Magnitude [kV]Voltage, Magnitude [p.u.]Voltage, Angle [deg]

BranchesActive Power [MW]Reactive Power [Mvar]Maximum Loading [%]

External GridActive Power [MW]Reactive Power [Mvar]

31.7km

27.9km

47.6km

35.4km

26.6km

SF30W N

2030 Winter - Maximum South FlowNormal Operating Condition

-100.6 MW17.0 Mvar165.0 %0.536 kA

0.0 MW0.0 Mvar

0.0 %0.000 kA

-15.0 MW-14.4 Mvar

26.8 %0.109 kA

-16.2 MW-14.7 Mvar

28.3 %0.115 kA

28.3 MW-8.5 Mvar47.9 %

0.156 kA

-7.2 MW-12.8 Mvar

19.2 %0.078 kA

-5.9 MW-12.4 Mvar

18.1 %0.073 kA

-0.0 MW0.0 Mvar

0.2 %0.000 kA

-0.0 MW14.4 Mvar14.9 %

0.075 kA

-32.1 MW6.7 Mvar53.5 %

0.173 kA

39.7 MW6.1 Mvar62.4 %

0.102 kA

-39.5 MW-4.6 Mvar62.4 %

0.204 kA

1

39.7 MW6.1 Mvar62.4 %

0.102 kA

-39.5 MW-4.6 Mvar62.4 %

0.204 kA

1

39.7 MW6.1 Mvar62.4 %

0.102 kA

-39.5 MW-4.6 Mvar62.4 %

0.204 kA

1

-283.3 MW48.2 Mvar36.8 %

0.733 kA

287.2 MW-29.0 Mvar

36.8 %0.738 kA

207.0 MW4.2 Mvar67.7 %

0.518 kA

-201.8 MW13.6 Mvar67.7 %

0.517 kA

-32.

8 M

W6.

3 M

var

34.8

%0.

174

kA

210.7 MW4.0 Mvar70.0 %

0.527 kA

-205.3 MW14.2 Mvar70.0 %

0.526 kA

210.7 MW4.0 Mvar68.8 %

0.527 kA

-205.3 MW14.2 Mvar68.8 %

0.526 kA

-282.7 MW48.1 Mvar36.7 %

0.731 kA

286.6 MW-29.0 Mvar

36.7 %0.736 kA

G~

-0.0 MW27.9 Mvar27.9 %

0.146 kA

612.29 MW96.48 Mvar

-0.0 MW0.0 Mvar

0.2 %0.000 kA

123.3 MW24.8 Mvar83.6 %

0.314 kA

-122.9 MW-16.4 Mvar

83.6 %0.627 kA

-0.0

MW

0.0

Mva

r83

.6 %

0.00

0 kA

52

HW

A-R

72

BRK/BRK220225.95 kV1.03 p.u.-8.91 deg

BPE/BPE110112.50 kV1.02 p.u.

-17.64 deg

BPE/BPE220226.43 kV1.03 p.u.

-15.59 deg

PTA_110111.42 kV1.01 p.u.-9.63 deg

MTN_110_2 MTN_110_1 110.00 kV1.00 p.u.

-18.21 deg

WVY/WVY110109.53 kV1.00 p.u.

-14.96 deg

WGN/WGN110108.49 kV0.99 p.u.

-18.23 deg

WAA/WAA110110.00 kV1.00 p.u.-9.31 deg

HWA/HWA110110.00 kV1.00 p.u.-9.31 deg

SFD/SFD110114.11 kV1.04 p.u.-3.41 deg

SFD/SFD220231.00 kV1.05 p.u.0.00 deg

DIg

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Needs Identification with Long List of Options © Transpower New Zealand Limited 2009. All rights reserved. 22

Page 27: Home — Electricity Authority

Appendix D

PowerFactory 13.2.333

Project:

Graphic: Taranaki

Date: 6/5/2009

Annex:

Load Flow BalancedNodesLine-Line Voltage, Magnitude [kV]Voltage, Magnitude [p.u.]Voltage, Angle [deg]

BranchesActive Power [MW]Reactive Power [Mvar]Maximum Loading [%]

External GridActive Power [MW]Reactive Power [Mvar]

31.7km

27.9km

47.6km

35.4km

26.6km

SF30W oR

2030 Winter - Maximum South FlowReactor Bypassed

-107.5 MW21.0 Mvar177.1 %0.575 kA

39.7 MW-9.9 Mvar

0.0 %0.215 kA

-11.9 MW-17.1 Mvar

27.1 %0.110 kA

-13.2 MW-17.5 Mvar

28.4 %0.115 kA

34.8 MW-12.9 Mvar60.6 %

0.197 kA

-4.2 MW-15.4 Mvar

21.1 %0.085 kA

-2.9 MW-15.1 Mvar

20.3 %0.082 kA

-0.0 MW0.0 Mvar

0.2 %0.000 kA

-0.0 MW14.4 Mvar14.9 %

0.075 kA

-38.6 MW11.0 Mvar66.1 %

0.213 kA

37.8 MW7.6 Mvar59.9 %

0.098 kA

-37.6 MW-6.3 Mvar59.9 %

0.196 kA1

37.8 MW7.6 Mvar59.9 %

0.098 kA

-37.6 MW-6.3 Mvar59.9 %

0.196 kA1

37.8 MW7.6 Mvar59.9 %

0.098 kA

-37.6 MW-6.3 Mvar59.9 %

0.196 kA1

-280.9 MW46.8 Mvar36.4 %

0.726 kA

284.7 MW-28.2 Mvar

36.4 %0.731 kA

205.3 MW4.1 Mvar67.1 %

0.513 kA

-200.2 MW13.1 Mvar67.1 %

0.512 kA

-0.0

MW

-0.0

Mva

r0.

0 %

0.00

0 kA

208.9 MW4.0 Mvar69.4 %

0.522 kA

-203.6 MW13.7 Mvar69.4 %

0.521 kA

208.9 MW4.0 Mvar68.3 %

0.522 kA

-203.6 MW13.7 Mvar68.3 %

0.521 kA

-280.3 MW46.7 Mvar36.4 %

0.725 kA

284.1 MW-28.2 Mvar

36.4 %0.730 kA

G~

0.0 MW26.4 Mvar26.4 %

0.139 kA

613.53 MW94.71 Mvar

-0.0 MW0.0 Mvar

0.2 %0.000 kA

129.0 MW24.1 Mvar87.2 %

0.328 kA

-128.5 MW-15.1 Mvar

87.2 %0.655 kA

-0.0

MW

0.0

Mva

r87

.2 %

0.00

0 kA

52

HW

A-R

72

BRK/BRK220225.96 kV1.03 p.u.-8.83 deg

BPE/BPE110112.31 kV1.02 p.u.

-17.41 deg

BPE/BPE220226.37 kV1.03 p.u.

-15.46 deg

PTA_110111.42 kV1.01 p.u.-10.26 deg

MTN_110_2 MTN_110_1 109.65 kV1.00 p.u.

-17.73 deg

WVY/WVY110108.71 kV0.99 p.u.

-13.31 deg

WGN/WGN110108.00 kV0.98 p.u.

-17.52 deg

WAA/WAA110110.00 kV1.00 p.u.-9.94 deg

HWA/HWA110110.00 kV1.00 p.u.-9.94 deg

SFD/SFD110114.16 kV1.04 p.u.-3.56 deg

SFD/SFD220231.00 kV1.05 p.u.0.00 deg

DIg

SILE

NT

PowerFactory 13.2.333

Project:

Graphic: Taranaki

Date: 6/7/2009

Annex:

Load Flow BalancedNodesLine-Line Voltage, Magnitude [kV]Voltage, Magnitude [p.u.]

BranchesActive Power [MW]Reactive Power [Mvar]Maximum Loading [%]

External GridActive Power [MW]Reactive Power [Mvar]

31.7km

27.9km

47.6km

35.4km

26.6km

SF30W oL4

2030 Winter - Maximum South Flow110kV BPE-MTN-WGN out

-102.7 MW18.2 Mvar168.7 %0.548 kA

0.0 MW0.0 Mvar

0.0 %0.000 kA

-29.3 MW-26.5 Mvar

52.1 %0.212 kA

30.3 MW-3.1 Mvar50.3 %

0.163 kA

-11.2 MW-20.2 Mvar

31.3 %0.127 kA

-0.0 MW-0.0 Mvar

0.2 %0.000 kA

-0.0 MW14.4 Mvar14.9 %

0.075 kA

-34.1 MW1.2 Mvar56.4 %

0.183 kA

39.3 MW5.8 Mvar61.7 %

0.101 kA

-39.1 MW-4.4 Mvar61.7 %

0.202 kA

1

39.3 MW5.8 Mvar61.7 %

0.101 kA

-39.1 MW-4.4 Mvar61.7 %

0.202 kA

1

39.3 MW5.8 Mvar61.7 %

0.101 kA

-39.1 MW-4.4 Mvar61.7 %

0.202 kA

1

-282.7 MW48.1 Mvar36.7 %

0.731 kA

286.6 MW-29.1 Mvar

36.7 %0.736 kA

206.6 MW4.0 Mvar67.5 %

0.517 kA

-201.4 MW13.6 Mvar67.5 %

0.516 kA

-34.

9 M

W0.

7 M

var

36.7

%0.

183

kA

210.2 MW3.8 Mvar69.9 %

0.526 kA

-204.9 MW14.3 Mvar69.9 %

0.525 kA

210.2 MW3.8 Mvar68.7 %

0.526 kA

-204.9 MW14.3 Mvar68.7 %

0.525 kA

-282.2 MW48.0 Mvar36.6 %

0.730 kA

286.0 MW-29.0 Mvar

36.6 %0.735 kA

G~

0.0 MW34.9 Mvar34.9 %

0.183 kA

613.0 MW95.4 Mvar

-0.0 MW-0.0 Mvar

0.2 %0.000 kA

125.1 MW24.6 Mvar84.7 %

0.319 kA

-124.6 MW-16.0 Mvar

84.7 %0.636 kA

-0.0

MW

-0.0

Mva

r84

.7 %

0.00

0 kA

52

HW

A-R

72

BRK/BRK220225.98 kV1.03 p.u.

BPE/BPE110112.55 kV1.02 p.u.

BPE/BPE220226.47 kV1.03 p.u.

PTA_110111.42 kV1.01 p.u.

MTN_110_2 MTN_110_1 104.21 kV0.95 p.u.

WVY/WVY110107.54 kV0.98 p.u.

WGN/WGN110105.22 kV0.96 p.u.

WAA/WAA110110.00 kV1.00 p.u.

HWA/HWA110110.00 kV1.00 p.u.

SFD/SFD110114.13 kV1.04 p.u.

SFD/SFD220231.00 kV1.05 p.u. D

IgSI

LEN

T

Needs Identification with Long List of Options © Transpower New Zealand Limited 2009. All rights reserved. 23

Page 28: Home — Electricity Authority

Appendix D

North Flow

PowerFactory 13.2.333

Project:

Graphic: Taranaki 1

Date: 6/5/2009

Annex:

31.7km

27.9km

47.6km

35.4km

26.6km

NF10S N

2010 Summer - Maximum North FlowNormal Operating Condition

-54.0 MW23.7 Mvar112.1 %0.296 kA

0.6 MW9.5 Mvar

0.0 %0.048 kA

-25.1 MW-3.3 Mvar39.0 %

0.130 kA

-26.1 MW-3.6 Mvar

40.5 %0.135 kA

-2.3 MW9.4 Mvar21.5 %

0.049 kA

-19.1 MW-2.1 Mvar29.8 %

0.099 kA

-18.1 MW-1.8 Mvar

28.2 %0.094 kA

Load Flow BalancedNodesLine-Line Voltage, Magnitude [kV]Voltage, Magnitude [p.u.]

BranchesActive Power [MW]Reactive Power [Mvar]Maximum Loading [%]

-0.0 MW20.5 Mvar

22.2 %0.103 kA

-0.0 MW6.3 Mvar

7.4 %0.031 kA

183.4 MW-41.7 Mvar

38.5 %0.474 kA

-0.5 MW-10.5 Mvar

20.1 %0.054 kA

-169.3 MW41.0 Mvar

36.8 %0.438 kA

181.0 MW-13.3 Mva..

36.8 %0.454 kA

180.2 MW-12.8 Mva..

36.7 %0.452 kA

-179.1 MW20.9 Mvar

56.8 %0.456 kA

182.9 MW-12.1 Mvar

56.8 %0.458 kA

-180.1 MW21.0 Mvar

57.1 %0.458 kA

183.9 MW-12.1 Mvar

57.1 %0.461 kA

-86.3 MW13.5 Mvar

28.6 %0.218 kA

88.5 MW-26.0 Mvar

28.6 %0.231 kA

41.7 MW7.1 Mvar69.5 %

0.106 kA

-41.5 MW-5.5 Mvar69.5 %

0.211 kA

141.7 MW7.1 Mvar69.5 %

0.106 kA

-41.5 MW-5.5 Mvar

69.5 %0.211 kA

141.7 MW7.1 Mvar69.5 %

0.106 kA

-41.5 MW-5.5 Mvar

69.5 %0.211 kA

15.6 MW

-15.7 Mvar2.3 %

0.042 kA

-5.6 MW1.0 Mvar

2.3 %0.014 kA

-86.2 MW13.5 Mvar

28.6 %0.218 kA

88.4 MW-26.0 Mvar

28.6 %0.231 kA

-70.9 MW6.6 Mvar29.6 %

0.178 kA

71.7 MW-18.6 Mvar

29.6 %0.185 kA

6.2 MW-9.5 Mvar

4.5 %0.028 kA

-6.2 MW-4.8 Mvar

4.5 %0.020 kA

0.0

MW

-0.0

Mva

r0.

0 %

0.00

0 kA

6.3 MW-9.6 Mvar

4.7 %0.029 kA

-6.3 MW-4.8 Mvar

4.7 %0.020 kA

6.3 MW-9.6 Mvar

4.6 %0.029 kA

-6.3 MW-4.8 Mvar

4.6 %0.020 kA

5.6 MW-15.7 Mvar

2.3 %0.042 kA

-5.6 MW1.0 Mvar

2.3 %0.014 kA

-0.0 MW20.5 Mvar

22.2 %0.103 kA

77.9 MW2.0 Mvar54.9 %

0.195 kA

-77.7 MW1.7 Mvar54.9 %

0.389 kA

-0.0

MW

-0.0

Mva

r54

.9 %

0.00

0 kA

5 2

HW

A-R

72

BRK/BRK220231.23 kV1.05 p.u.

BPE/BPE110114.46 kV1.04 p.u.

BPE/BPE220230.54 kV1.05 p.u.

PTA_110115.50 kV1.05 p.u.

MTN_110_2 MTN_110_1 112.75 kV1.03 p.u.

WVY/WVY110113.45 kV1.03 p.u.

WGN/WGN110111.78 kV1.02 p.u.

WAA/WAA110115.24 kV1.05 p.u.

HWA/HWA110114.88 kV1.04 p.u.

SFD/SFD110115.35 kV1.05 p.u.

TWH/TWH220229.21 kV1.04 p.u.

HLY/HLY220229.90 kV1.04 p.u.

TMN/TMN220228.74 kV1.04 p.u.

WKM/WKM2..228.30 kV1.04 p.u.

SFD/SFD220231.00 kV1.05 p.u.

TNG/TNG220

230.73 kV1.05 p.u.

DIg

SILE

NT

PowerFactory 13.2.333

Project:

Graphic: Taranaki 1

Date: 6/5/2009

Annex:

31.7km

27.9km

47.6km

35.4km

26.6km

NF10W N

2010 Winter - Maximum North FlowNormal Operating Condition

Load Flow BalancedNodesLine-Line Voltage, Magnitude [kV]Voltage, Magnitude [p.u.]

BranchesActive Power [MW]Reactive Power [Mvar]Maximum Loading [%]

0.2 MW8.3 Mvar

0.0 %0.042 kA

-23.8 MW-2.5 Mvar30.2 %

0.123 kA

-24.9 MW-2.7 Mvar

31.6 %0.128 kA

-2.7 MW8.0 Mvar15.6 %

0.043 kA

-17.0 MW-1.2 Mvar21.7 %

0.088 kA

-15.9 MW-0.9 Mvar

20.3 %0.082 kA

-52.7 MW21.8 Mvar

88.9 %0.287 kA

-0.0 MW20.5 Mvar

22.3 %0.103 kA

-0.0 MW10.1 Mvar

10.3 %0.050 kA

130.0 MW-50.4 Mvar

27.3 %0.353 kA

-0.2 MW-9.4 Mvar

14.7 %0.048 kA

-167.7 MW40.0 Mvar

34.7 %0.433 kA

179.0 MW-13.7 Mva..

34.7 %0.449 kA

183.4 MW-10.2 Mva..

35.5 %0.459 kA

-194.6 MW25.3 Mvar

56.7 %0.497 kA

199.2 MW-13.1 Mvar

56.7 %0.499 kA

-195.7 MW25.5 Mvar

57.0 %0.499 kA

200.2 MW-13.2 Mvar

57.0 %0.502 kA

-103.4 MW22.1 Mvar

31.6 %0.264 kA

106.6 MW-29.6 Mvar

31.6 %0.278 kA

44.1 MW5.7 Mvar68.1 %

0.112 kA

-44.0 MW-4.0 Mvar68.1 %

0.223 kA

1

44.1 MW5.7 Mvar68.1 %

0.112 kA

-44.0 MW-4.0 Mvar

68.1 %0.223 kA

1

44.1 MW5.7 Mvar68.1 %

0.112 kA

-44.0 MW-4.0 Mvar

68.1 %0.223 kA

1

5.7 MW-19.6 Mvar

2.6 %0.051 kA

-5.7 MW5.0 Mvar

2.6 %0.019 kA

-103.3 MW22.1 Mvar

31.6 %0.264 kA

106.5 MW-29.6 Mvar

31.6 %0.278 kA

-96.2 MW14.0 Mvar

32.9 %0.244 kA

97.6 MW-21.9 Mvar

32.9 %0.251 kA

5.9 MW-7.1 Mvar

3.0 %0.023 kA

-5.9 MW-7.2 Mvar

3.0 %0.023 kA

0.0

MW

-0.0

Mva

r0.

0 %

0.00

0 kA

6.0 MW-7.2 Mvar

3.1 %0.023 kA

-6.0 MW-7.2 Mvar

3.1 %0.023 kA

6.0 MW-7.2 Mvar

3.1 %0.023 kA

-6.0 MW-7.2 Mvar

3.1 %0.023 kA

5.7 MW-19.6 Mvar

2.6 %0.051 kA

-5.7 MW5.0 Mvar

2.6 %0.019 kA

-0.0 MW20.5 Mvar

22.3 %0.103 kA

78.3 MW6.1 Mvar52.2 %

0.196 kA

-78.1 MW-2.3 Mvar52.2 %

0.392 kA

-0.0

MW

-0.0

Mva

r52

.2 %

0.00

0 kA

5 2

HW

A-R

72

BRK/BRK220230.83 kV1.05 p.u.

BPE/BPE110114.23 kV1.04 p.u.

BPE/BPE220229.79 kV1.04 p.u.

PTA_110115.50 kV1.05 p.u.

MTN_110_2 MTN_110_1 112.67 kV1.02 p.u.

WVY/WVY110113.28 kV1.03 p.u.

WGN/WGN110111.90 kV1.02 p.u.

WAA/WAA110114.89 kV1.04 p.u.

HWA/HWA110114.52 kV1.04 p.u.

SFD/SFD110115.13 kV1.05 p.u.

TWH/TWH220228.38 kV1.04 p.u.

HLY/HLY220229.90 kV1.04 p.u.

TMN/TMN220228.24 kV1.04 p.u.

WKM/WKM2..228.22 kV1.04 p.u.

SFD/SFD220231.00 kV1.05 p.u.

TNG/TNG220

230.23 kV1.05 p.u.

DIg

SILE

NT

Needs Identification with Long List of Options © Transpower New Zealand Limited 2009. All rights reserved. 24

Page 29: Home — Electricity Authority

Appendix D

PowerFactory 13.2.333

Project:

Graphic: Taranaki 1

Date: 6/5/2009

Annex: NF30S N

31.7km

27.9km

47.6km

35.4km

26.6km

2030 Summer - Maximum North FlowNormal Operating Condition

-144.7 MW12.8 Mvar

38.5 %0.365 kA

-37.1 MW12.2 Mvar

16.9 %0.098 kA

G~

-0.0 MW10.7 Mvar

10.7 %0.056 kA

2.7 MW4.2 Mvar

0.0 %0.026 kA

-31.6 MW-10.2 Mvar

52.2 %0.174 kA

-32.8 MW-10.5 Mvar

54.1 %0.180 kA

-1.2 MW3.7 Mvar10.5 %

0.021 kA

-24.5 MW-8.3 Mvar

41.4 %0.138 kA

-23.5 MW-8.0 Mvar39.6 %

0.132 kA

-71.8 MW0.1 Mvar141.6 %0.377 kA

Load Flow BalancedNodesLine-Line Voltage, Magnitude [kV]Voltage, Magnitude [p.u.]Voltage, Angle [deg]

BranchesActive Power [MW]Reactive Power [Mvar]Maximum Loading [%]

-0.0 MW0.0 Mvar

0.2 %0.000 kA

-0.0 MW14.4 Mvar

16.4 %0.075 kA

137.8 MW-26.0 Mvar

28.6 %0.353 kA

-2.6 MW-5.2 Mvar11.6 %

0.031 kA

-131.4 MW19.7 Mvar

28.4 %0.334 kA

138.2 MW-21.1 Mvar

28.4 %0.349 kA

138.4 MW-20.0 Mvar

28.4 %0.350 kA

-178.5 MW31.6 Mvar

56.9 %0.456 kA

182.4 MW-22.8 Mvar

56.9 %0.459 kA

-179.5 MW31.8 Mvar

57.2 %0.458 kA

183.3 MW-22.9 Mvar

57.2 %0.462 kA

-85.9 MW18.7 Mvar

29.2 %0.220 kA

88.2 MW-30.7 Mvar

29.2 %0.235 kA

50.9 MW11.9 Mvar

86.6 %0.132 kA

-50.8 MW-9.5 Mvar86.6 %

0.263 kA

1

50.9 MW11.9 Mvar

86.6 %0.132 kA

-50.8 MW-9.5 Mvar86.6 %

0.263 kA

1

50.9 MW11.9 Mvar

86.6 %0.132 kA

-50.8 MW-9.5 Mvar

86.6 %0.263 kA

1

-8.6 MW-19.2 Mvar

2.9 %0.053 kA

8.6 MW4.7 Mvar

2.9 %0.025 kA

-85.9 MW18.7 Mvar

29.2 %0.220 kA

88.1 MW-30.7 Mvar

29.2 %0.235 kA

-81.2 MW12.9 Mvar

34.3 %0.206 kA

82.2 MW-23.2 Mvar

34.3 %0.215 kA

18.7 MW-5.2 Mvar

8.3 %0.049 kA

-18.7 MW-8.8 Mvar

8.3 %0.052 kA

0.0

MW

-0.0

Mva

r0.

0 %

0.00

0 kA

19.1 MW-5.2 Mvar

8.6 %0.049 kA

-19.0 MW-8.8 Mvar

8.6 %0.053 kA

19.1 MW-5.2 Mvar

8.4 %0.049 kA

-19.0 MW-8.8 Mvar

8.4 %0.053 kA

-8.6 MW-19.2 Mvar

2.9 %0.053 kA

8.6 MW4.7 Mvar

2.9 %0.024 kA

-0.0 MW0.0 Mvar

0.2 %0.000 kA

97.0 MW25.7 Mvar

70.6 %0.251 kA

-96.7 MW-20.1 Mvar

70.6 %0.500 kA

-0.0

MW

-0.0

Mva

r70

.6 %

0.00

0 kA

5 2WRK/WRK220229.44 kV1.04 p.u.

-17.47 deg

RPO/RPO220231.00 kV1.05 p.u.

-12.59 deg

HW

A-R

72

BRK/BRK220230.16 kV1.05 p.u.-7.06 deg

BPE/BPE110113.20 kV1.03 p.u.-9.80 deg

BPE/BPE220229.00 kV1.04 p.u.-7.22 deg

PTA_110111.42 kV1.01 p.u.

-13.16 deg

MTN_110_2 MTN_110_1 110.29 kV1.00 p.u.

-11.45 deg

WVY/WVY110109.13 kV0.99 p.u.

-12.86 deg

WGN/WGN110108.39 kV0.99 p.u.

-12.52 deg

WAA/WAA110110.00 kV1.00 p.u.

-12.84 deg

HWA/HWA110110.00 kV1.00 p.u.

-12.84 deg

SFD/SFD110114.04 kV1.04 p.u.-8.95 deg

TWH/TWH220229.74 kV1.04 p.u.

-21.54 deg

HLY/HLY220229.90 kV1.04 p.u.

-23.41 deg

TMN/TMN220230.41 kV1.05 p.u.

-12.97 deg

WKM/220229.68 kV1.04 p.u.

-20.03 deg

SFD/SFD220231.00 kV1.05 p.u.-6.28 deg

TNG/TNG220229.97 kV1.05 p.u.

-11.58 deg

DIg

SILE

NT

PowerFactory 13.2.333

Project:

Graphic: Taranaki 1

Date: 6/7/2009

Annex: NF30W N

31.7km

27.9km

47.6km

35.4km

26.6km

2030 Winter - Maximum North FlowNormal Operating Condition

-161.8 MW16.0 Mvar

39.5 %0.409 kA

-54.8 MW22.5 Mvar

20.5 %0.148 kA

G~

0.0 MW20.4 Mvar

20.4 %0.107 kA

2.7 MW4.0 Mvar

0.0 %0.025 kA

-29.4 MW-8.1 Mvar

39.4 %0.160 kA

-30.6 MW-8.4 Mvar41.1 %

0.167 kA

-1.1 MW3.2 Mvar

7.7 %0.018 kA

-21.5 MW-6.2 Mvar

29.3 %0.119 kA

-20.3 MW-5.8 Mvar27.6 %

0.112 kA

-70.6 MW0.9 Mvar114.0 %0.370 kA

Load Flow BalancedNodesLine-Line Voltage, Magnitude [kV]Voltage, Magnitude [p.u.]

BranchesActive Power [MW]Reactive Power [Mvar]Maximum Loading [%]

-0.0 MW-0.0 Mvar

0.2 %0.000 kA

-0.0 MW14.4 Mvar

14.9 %0.075 kA

62.5 MW-35.4 Mvar

14.0 %0.181 kA

-2.7 MW-5.0 Mvar

9.3 %0.030 kA

-124.1 MW16.1 Mvar

25.5 %0.314 kA

130.1 MW-22.1 Mvar

25.5 %0.330 kA

137.6 MW-17.7 Mvar

26.8 %0.347 kA

-194.0 MW36.6 Mvar

56.8 %0.496 kA

198.5 MW-24.4 Mvar

56.8 %0.500 kA

-195.1 MW36.8 Mvar

57.1 %0.499 kA

199.6 MW-24.5 Mvar

57.1 %0.503 kA

-103.1 MW28.7 Mvar

32.3 %0.267 kA

106.4 MW-35.5 Mvar

32.3 %0.284 kA

53.3 MW12.2 Mvar

84.5 %0.139 kA

-53.1 MW-9.5 Mvar84.5 %

0.277 kA

1

53.3 MW12.2 Mvar

84.5 %0.139 kA

-53.1 MW-9.5 Mvar84.5 %

0.277 kA

1

53.3 MW12.2 Mvar

84.5 %0.139 kA

-53.2 MW-9.5 Mvar

84.5 %0.277 kA

1

-11.3 MW-24.7 Mvar

3.4 %0.069 kA

11.4 MW10.3 Mvar

3.4 %0.039 kA

-103.0 MW28.7 Mvar

32.3 %0.267 kA

106.3 MW-35.5 Mvar

32.3 %0.284 kA

-108.0 MW22.1 Mvar

37.5 %0.278 kA

109.9 MW-27.1 Mvar

37.5 %0.287 kA

20.2 MW-1.8 Mvar

7.7 %0.051 kA

-20.2 MW-12.1 Mvar

7.7 %0.059 kA

0.0

MW

-0.0

Mva

r0.

0 %

0.00

0 kA

20.6 MW-1.8 Mvar

8.0 %0.052 kA

-20.5 MW-12.2 Mvar

8.0 %0.060 kA

20.6 MW-1.8 Mvar

7.8 %0.052 kA

-20.5 MW-12.2 Mvar

7.8 %0.060 kA

-11.3 MW-24.6 Mvar

3.4 %0.069 kA

11.3 MW10.3 Mvar

3.4 %0.039 kA

-0.0 MW-0.0 Mvar

0.2 %0.000 kA

99.2 MW28.6 Mvar

68.5 %0.258 kA

-98.8 MW-22.7 Mvar

68.5 %0.514 kA

-0.0

MW

-0.0

Mva

r68

.5 %

0.00

0 kA

5 2WRK/WRK220229.27 kV1.04 p.u.

RPO/RPO220231.00 kV1.05 p.u.

HW

A-R

72

BRK/BRK220229.54 kV1.04 p.u.

BPE/BPE110112.60 kV1.02 p.u.

BPE/BPE220227.84 kV1.04 p.u.

PTA_110111.42 kV1.01 p.u.

MTN_110_2 MTN_110_1 110.03 kV1.00 p.u.

WVY/WVY110109.15 kV0.99 p.u.

WGN/WGN110108.51 kV0.99 p.u.

WAA/WAA110110.00 kV1.00 p.u.

HWA/HWA110110.00 kV1.00 p.u.

SFD/SFD110113.89 kV1.04 p.u.

TWH/TWH220228.67 kV1.04 p.u.

HLY/HLY220229.90 kV1.04 p.u.

TMN/TMN220229.96 kV1.05 p.u.

WKM/220229.68 kV1.04 p.u.

SFD/SFD220231.00 kV1.05 p.u.

TNG/TNG220229.26 kV1.04 p.u.

DIg

SILE

NT

Needs Identification with Long List of Options © Transpower New Zealand Limited 2009. All rights reserved. 25

Page 30: Home — Electricity Authority

Appendix D

PowerFactory 13.2.333

Project:

Graphic: Taranaki 1

Date: 6/5/2009

Annex: NF30S oL4

31.7km

27.9km

47.6km

35.4km

26.6km

2030 Summer - Maximum North Flow110kV BPE-MTN-WGN out

-145.1 MW13.0 Mvar

38.6 %0.367 kA

-37.6 MW12.2 Mvar

17.1 %0.099 kA

G~

0.0 MW21.4 Mvar

21.4 %0.112 kA

11.4 MW10.3 Mvar

0.0 %0.081 kA

-56.2 MW-18.0 Mvar

94.7 %0.315 kA

7.4 MW9.5 Mvar26.7 %

0.065 kA

-39.5 MW-11.2 Mvar

67.9 %0.226 kA

-80.5 MW4.6 Mvar159.2 %0.423 kA

Load Flow BalancedNodesLine-Line Voltage, Magnitude [kV]Voltage, Magnitude [p.u.]Voltage, Angle [deg]

BranchesActive Power [MW]Reactive Power [Mvar]Maximum Loading [%]

-0.0 MW-0.0 Mvar

0.2 %0.000 kA

-0.0 MW14.4 Mvar

16.4 %0.075 kA

137.0 MW-25.6 Mvar

28.4 %0.350 kA

-11.2 MW-11.1 Mva..

31.8 %0.085 kA

-130.6 MW19.3 Mvar

28.2 %0.331 kA

137.3 MW-21.2 Mvar

28.2 %0.347 kA

137.5 MW-20.2 Mvar

28.2 %0.347 kA

-179.0 MW31.7 Mvar

57.1 %0.457 kA

182.9 MW-22.9 Mvar

57.1 %0.461 kA

-180.0 MW32.0 Mvar

57.4 %0.460 kA

183.9 MW-23.0 Mvar

57.4 %0.463 kA

-86.5 MW18.7 Mvar

29.3 %0.221 kA

88.7 MW-30.6 Mvar

29.3 %0.237 kA

48.6 MW11.6 Mvar

82.8 %0.126 kA

-48.4 MW-9.4 Mvar82.8 %

0.252 kA

1

48.6 MW11.6 Mvar

82.8 %0.126 kA

-48.4 MW-9.4 Mvar82.8 %

0.252 kA

1

48.6 MW11.6 Mvar

82.8 %0.126 kA

-48.5 MW-9.4 Mvar

82.8 %0.252 kA

1

-4.8 MW-19.6 Mvar

2.8 %0.051 kA

4.8 MW5.1 Mvar

2.8 %0.018 kA

-86.4 MW18.7 Mvar

29.3 %0.221 kA

88.7 MW-30.6 Mvar

29.3 %0.237 kA

-81.6 MW12.9 Mvar

34.5 %0.207 kA

82.7 MW-23.1 Mvar

34.5 %0.216 kA

16.3 MW-5.0 Mvar

7.4 %0.043 kA

-16.2 MW-9.0 Mvar

7.4 %0.047 kA

0.0

MW

-0.0

Mva

r0.

0 %

0.00

0 kA

16.5 MW-5.0 Mvar

7.7 %0.043 kA

-16.5 MW-9.1 Mvar

7.7 %0.047 kA

16.5 MW-5.0 Mvar

7.5 %0.043 kA

-16.5 MW-9.1 Mvar

7.5 %0.047 kA

-4.8 MW-19.6 Mvar

2.8 %0.051 kA

4.8 MW5.0 Mvar

2.8 %0.017 kA

-0.0 MW-0.0 Mvar

0.2 %0.000 kA

104.0 MW24.5 Mvar

75.2 %0.267 kA

-103.7 MW-18.3 Mvar

75.2 %0.533 kA

-0.0

MW

-0.0

Mva

r75

.2 %

0.00

0 kA

5 2WRK/WRK220229.44 kV1.04 p.u.

-17.55 deg

RPO/RPO220231.00 kV1.05 p.u.

-12.66 deg

HW

A-R

72

BRK/BRK220230.19 kV1.05 p.u.-7.17 deg

BPE/BPE110113.25 kV1.03 p.u.-9.71 deg

BPE/BPE220229.04 kV1.04 p.u.-7.25 deg

PTA_110111.42 kV1.01 p.u.

-14.16 deg

MTN_110_2 MTN_110_1 104.66 kV0.95 p.u.

-17.37 deg

WVY/WVY110107.63 kV0.98 p.u.

-14.31 deg

WGN/WGN110104.89 kV0.95 p.u.

-14.56 deg

WAA/WAA110110.00 kV1.00 p.u.

-13.85 deg

HWA/HWA110110.00 kV1.00 p.u.

-13.85 deg

SFD/SFD110114.11 kV1.04 p.u.-9.37 deg

TWH/TWH220229.75 kV1.04 p.u.

-21.66 deg

HLY/HLY220229.90 kV1.04 p.u.

-23.52 deg

TMN/TMN220230.44 kV1.05 p.u.

-13.15 deg

WKM/220229.68 kV1.04 p.u.

-20.12 deg

SFD/SFD220231.00 kV1.05 p.u.-6.50 deg

TNG/TNG220229.98 kV1.05 p.u.

-11.63 deg

DIg

SILE

NT

PowerFactory 13.2.333

Project:

Graphic: Taranaki 1

Date: 6/7/2009

Annex: NF30W oL4

31.7km

27.9km

47.6km

35.4km

26.6km

2030 Winter - Maximum North Flow110kV BPE-MTN-WGN out

-162.2 MW16.1 Mvar

39.6 %0.410 kA

-55.2 MW22.5 Mvar

20.6 %0.149 kA

G~

0.0 MW29.4 Mvar

29.4 %0.155 kA

10.6 MW9.1 Mvar

0.0 %0.073 kA

-52.5 MW-14.6 Mvar

71.8 %0.292 kA

6.7 MW8.0 Mvar18.9 %

0.056 kA

-34.1 MW-7.7 Mvar

47.1 %0.191 kA

-78.4 MW5.0 Mvar127.0 %0.413 kA

Load Flow BalancedNodesLine-Line Voltage, Magnitude [kV]Voltage, Magnitude [p.u.]

BranchesActive Power [MW]Reactive Power [Mvar]Maximum Loading [%]

-0.0 MW0.0 Mvar

0.2 %0.000 kA

-0.0 MW14.4 Mvar

14.9 %0.075 kA

61.7 MW-35.1 Mvar

13.9 %0.179 kA

-10.5 MW-9.9 Mvar23.7 %

0.077 kA

-123.4 MW15.8 Mvar

25.4 %0.312 kA

129.3 MW-22.2 Mvar

25.4 %0.328 kA

136.7 MW-17.8 Mvar

26.7 %0.345 kA

-194.5 MW36.7 Mvar

56.9 %0.497 kA

199.0 MW-24.5 Mvar

56.9 %0.501 kA

-195.5 MW37.0 Mvar

57.3 %0.500 kA

200.1 MW-24.6 Mvar

57.3 %0.504 kA

-103.5 MW28.8 Mvar

32.4 %0.269 kA

106.9 MW-35.5 Mvar

32.4 %0.285 kA

51.2 MW12.1 Mvar

81.3 %0.133 kA

-51.0 MW-9.6 Mvar81.3 %

0.266 kA

1

51.2 MW12.1 Mvar

81.3 %0.133 kA

-51.0 MW-9.6 Mvar81.3 %

0.266 kA

1

51.2 MW12.1 Mvar

81.3 %0.133 kA

-51.0 MW-9.6 Mvar

81.3 %0.266 kA

1

-8.0 MW-25.1 Mvar

3.3 %0.067 kA

8.0 MW10.7 Mvar

3.3 %0.034 kA

-103.5 MW28.8 Mvar

32.4 %0.268 kA

106.8 MW-35.5 Mvar

32.4 %0.285 kA

-108.5 MW22.1 Mvar

37.6 %0.279 kA

110.3 MW-27.1 Mvar

37.6 %0.288 kA

18.0 MW-1.6 Mvar

7.2 %0.045 kA

-17.9 MW-12.4 Mvar

7.2 %0.055 kA

0.0

MW

-0.0

Mva

r0.

0 %

0.00

0 kA

18.3 MW-1.5 Mvar

7.4 %0.046 kA

-18.2 MW-12.5 Mvar

7.4 %0.056 kA

18.3 MW-1.5 Mvar

7.3 %0.046 kA

-18.2 MW-12.5 Mvar

7.3 %0.056 kA

-7.9 MW-25.1 Mvar

3.3 %0.067 kA

8.0 MW10.7 Mvar

3.3 %0.034 kA

-0.0 MW0.0 Mvar

0.2 %0.000 kA

105.4 MW27.5 Mvar

72.3 %0.272 kA

-105.1 MW-21.0 Mvar

72.3 %0.543 kA

-0.0

MW

0.0

Mva

r72

.3 %

0.00

0 kA

5 2WRK/WRK220229.27 kV1.04 p.u.

RPO/RPO220231.00 kV1.05 p.u.

HW

A-R

72

BRK/BRK220229.56 kV1.04 p.u.

BPE/BPE110112.61 kV1.02 p.u.

BPE/BPE220227.87 kV1.04 p.u.

PTA_110111.42 kV1.01 p.u.

MTN_110_2 MTN_110_1 104.32 kV0.95 p.u.

WVY/WVY110107.86 kV0.98 p.u.

WGN/WGN110105.51 kV0.96 p.u.

WAA/WAA110110.00 kV1.00 p.u.

HWA/HWA110110.00 kV1.00 p.u.

SFD/SFD110113.95 kV1.04 p.u.

TWH/TWH220228.68 kV1.04 p.u.

HLY/HLY220229.90 kV1.04 p.u.

TMN/TMN220229.99 kV1.05 p.u.

WKM/220229.68 kV1.04 p.u.

SFD/SFD220231.00 kV1.05 p.u.

TNG/TNG220229.26 kV1.04 p.u.

DIg

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Needs Identification with Long List of Options © Transpower New Zealand Limited 2009. All rights reserved. 26

Page 31: Home — Electricity Authority

Appendix D

D.2 110 kV HWA-WVY-1 and WGN-WVY-1 circuit

PowerFactory 13.2.333

Project:

Graphic: Taranaki 1

Date: 6/8/2009

Annex:

31.7km

27.9km

47.6km

35.4km

26.6km

NF10S oL1

2010 Summer110kV HWA-SFD out

-53.5 MW41.0 Mvar

0.0 %0.348 kA

-56.5 MW3.4 Mvar87.9 %

0.292 kA

-57.5 MW3.2 Mvar89.5 %

0.298 kA

Load Flow BalancedNodesLine-Line Voltage, Magnitude [kV]Voltage, Magnitude [p.u.]

BranchesActive Power [MW]Reactive Power [Mvar]Maximum Loading [%]

-59.2 MW35.2 Mvar137.0 %0.361 kA

-49.5 MW6.6 Mvar78.9 %

0.262 kA

-48.6 MW6.9 Mvar77.6 %

0.258 kA

-0.0 MW20.5 Mvar

22.8 %0.106 kA

-0.0 MW14.4 Mvar

16.1 %0.074 kA

188.2 MW-44.1 Mvar

39.6 %0.487 kA

-174.0 MW43.9 Mvar

37.9 %0.451 kA

186.3 MW-12.0 Mva..

37.9 %0.467 kA

185.6 MW-11.5 Mva..

37.8 %0.465 kA

-176.3 MW20.1 Mvar

55.9 %0.449 kA

180.0 MW-11.9 Mvar

55.9 %0.451 kA

-177.3 MW20.3 Mvar

56.2 %0.451 kA

181.0 MW-11.9 Mvar

56.2 %0.453 kA

-83.3 MW13.3 Mvar

27.8 %0.211 kA

85.4 MW-26.3 Mvar

27.8 %0.224 kA

56.3 MW-36.3 Mvar

131.9 %0.351 kA

61.6 MW6.7 Mvar102.1 %0.155 kA

-61.4 MW-3.3 Mvar102.1 %0.310 kA

161.6 MW6.7 Mvar102.1 %0.155 kA

-61.4 MW-3.3 Mvar102.1 %0.310 kA

161.6 MW6.7 Mvar102.1 %0.155 kA

-61.4 MW-3.3 Mvar102.1 %0.310 kA

1-16.8 MW-13.3 Mvar

2.9 %0.054 kA

16.8 MW-1.3 Mvar

2.9 %0.042 kA

-83.3 MW13.2 Mvar

27.7 %0.211 kA

85.3 MW-26.3 Mvar

27.7 %0.224 kA

-68.3 MW6.7 Mvar28.6 %

0.172 kA

69.0 MW-19.1 Mvar

28.6 %0.179 kA

21.0 MW-10.7 Mvar

9.4 %0.059 kA

-21.0 MW-3.3 Mvar

9.4 %0.053 kA

0.0

MW

0.0

Mva

r0.

0 %

0.00

0 kA

21.4 MW-10.8 Mvar

9.8 %0.060 kA

-21.3 MW-3.2 Mvar

9.8 %0.054 kA

21.4 MW-10.8 Mvar

9.6 %0.060 kA

-21.3 MW-3.2 Mvar

9.6 %0.054 kA

-16.7 MW-13.3 Mvar

2.9 %0.054 kA

16.8 MW-1.3 Mvar

2.9 %0.042 kA

-0.0 MW20.5 Mvar

22.8 %0.106 kA

36.8 MW12.7 Mvar

27.2 %0.097 kA

-36.7 MW-11.2 Mva..

27.2 %0.193 kA

-0.0

MW

-0.0

Mva

r27

.2 %

0.00

0 kA

5 2

HW

A-R

72

BRK/BRK220231.04 kV1.05 p.u.

BPE/BPE110114.41 kV1.04 p.u.

BPE/BPE220230.33 kV1.05 p.u.

PTA_110113.28 kV1.03 p.u.

MTN_110_2 MTN_110_1 111.65 kV1.02 p.u.

WVY/WVY110110.24 kV1.00 p.u.

WGN/WGN110110.02 kV1.00 p.u.

WAA/WAA110112.25 kV1.02 p.u.

HWA/HWA110111.87 kV1.02 p.u.

SFD/SFD110114.78 kV1.04 p.u.

TWH/TWH220229.12 kV1.04 p.u.

HLY/HLY220229.90 kV1.04 p.u.

TMN/TMN220228.49 kV1.04 p.u.

WKM/WKM2..228.31 kV1.04 p.u.

SFD/SFD220231.00 kV1.05 p.u.

TNG/TNG220

230.67 kV1.05 p.u.

DIg

SILE

NT

PowerFactory 13.2.333

Project:

Graphic: Taranaki 1

Date: 6/8/2009

Annex:

31.7km

27.9km

47.6km

35.4km

26.6km

NF10W oL1

2010 Winter110kV HWA-SFD out

-52.5 MW33.9 Mvar

0.0 %0.329 kA

-54.0 MW2.1 Mvar69.1 %

0.280 kA

-55.2 MW1.9 Mvar70.6 %

0.286 kA

Load Flow BalancedNodesLine-Line Voltage, Magnitude [kV]Voltage, Magnitude [p.u.]

BranchesActive Power [MW]Reactive Power [Mvar]Maximum Loading [%]

-57.9 MW28.4 Mvar106.2 %0.342 kA

-46.4 MW5.3 Mvar60.7 %

0.246 kA

-45.4 MW5.5 Mvar59.4 %

0.241 kA

-0.0 MW20.5 Mvar

23.3 %0.108 kA

-0.0 MW14.4 Mvar

14.9 %0.075 kA

134.6 MW-52.7 Mvar

28.3 %0.366 kA

55.0 MW-29.7 Mvar

102.1 %0.332 kA

-172.2 MW42.8 Mvar

35.7 %0.446 kA

184.3 MW-12.5 Mva..

35.7 %0.462 kA

188.6 MW-9.0 Mvar36.5 %

0.472 kA

-191.9 MW24.5 Mvar

55.9 %0.489 kA

196.3 MW-13.0 Mvar

55.9 %0.492 kA

-193.0 MW24.7 Mvar

56.2 %0.492 kA

197.4 MW-13.0 Mvar

56.2 %0.494 kA

-100.5 MW21.9 Mvar

30.8 %0.257 kA

103.6 MW-30.2 Mvar

30.8 %0.271 kA

63.3 MW6.0 Mvar97.5 %

0.160 kA

-63.1 MW-2.5 Mvar97.5 %

0.319 kA

1

63.3 MW6.0 Mvar97.5 %

0.160 kA

-63.1 MW-2.5 Mvar

97.5 %0.319 kA

1

63.3 MW6.0 Mvar97.5 %

0.160 kA

-63.1 MW-2.5 Mvar

97.5 %0.319 kA

1

-16.1 MW-17.5 Mvar

3.0 %0.060 kA

16.1 MW3.0 Mvar

3.0 %0.041 kA

-100.5 MW21.9 Mvar

30.8 %0.257 kA

103.5 MW-30.2 Mvar

30.8 %0.271 kA

-93.6 MW14.3 Mvar

32.1 %0.237 kA

94.9 MW-22.6 Mvar

32.1 %0.245 kA

20.3 MW-8.2 Mvar

7.1 %0.055 kA

-20.2 MW-5.8 Mvar

7.1 %0.053 kA

0.0

MW

0.0

Mva

r0.

0 %

0.00

0 kA

20.6 MW-8.2 Mvar

7.4 %0.056 kA

-20.6 MW-5.8 Mvar

7.4 %0.054 kA

20.6 MW-8.2 Mvar

7.3 %0.056 kA

-20.6 MW-5.8 Mvar

7.3 %0.054 kA

-16.0 MW-17.5 Mvar

3.0 %0.060 kA

16.1 MW2.9 Mvar

3.0 %0.041 kA

-0.0 MW20.5 Mvar

23.3 %0.108 kA

38.4 MW15.6 Mvar

27.3 %0.104 kA

-38.2 MW-14.0 Mva..

27.3 %0.205 kA

-0.0

MW

0.0

Mva

r27

.3 %

0.00

0 kA

5 2

HW

A-R

72

BRK/BRK220230.62 kV1.05 p.u.

BPE/BPE110114.08 kV1.04 p.u.

BPE/BPE220229.54 kV1.04 p.u.

PTA_110111.01 kV1.01 p.u.

MTN_110_2 MTN_110_1 111.31 kV1.01 p.u.

WVY/WVY110108.83 kV0.99 p.u.

WGN/WGN110109.70 kV1.00 p.u.

WAA/WAA110109.96 kV1.00 p.u.

HWA/HWA110109.58 kV1.00 p.u.

SFD/SFD110114.62 kV1.04 p.u.

TWH/TWH220228.28 kV1.04 p.u.

HLY/HLY220229.90 kV1.04 p.u.

TMN/TMN220227.99 kV1.04 p.u.

WKM/WKM2..228.24 kV1.04 p.u.

SFD/SFD220231.00 kV1.05 p.u.

TNG/TNG220

230.17 kV1.05 p.u.

DIg

SILE

NT

Needs Identification with Long List of Options © Transpower New Zealand Limited 2009. All rights reserved. 27

Page 32: Home — Electricity Authority

Appendix D

PowerFactory 13.2.333

Project:

Graphic: Taranaki 1

Date: 6/8/2009

Annex: NF30S oL1

31.7km

27.9km

47.6km

35.4km

26.6km

2030 Summer110kV HWA-SFD out

-140.5 MW11.8 Mvar

37.4 %0.355 kA

-32.8 MW16.3 Mvar

16.4 %0.092 kA

G~

-0.0 MW56.2 Mvar

56.2 %0.295 kA

-69.1 MW49.8 Mvar

0.0 %0.447 kA

Load Flow BalancedNodesLine-Line Voltage, Magnitude [kV]Voltage, Magnitude [p.u.]

BranchesActive Power [MW]Reactive Power [Mvar]Maximum Loading [%]

-74.8 MW-2.3 Mvar115.1 %0.383 kA

-76.0 MW-2.6 Mvar117.0 %0.390 kA

-77.7 MW39.8 Mvar175.6 %0.464 kA

-66.2 MW3.0 Mvar104.6 %0.348 kA

-65.2 MW3.3 Mvar103.0 %0.343 kA

-0.0 MW-0.0 Mvar

0.2 %0.000 kA

-0.0 MW14.4 Mvar

16.4 %0.075 kA

144.4 MW-28.7 Mvar

30.1 %0.370 kA

-137.9 MW23.0 Mvar

29.8 %0.351 kA

145.5 MW-20.0 Mvar

29.8 %0.367 kA

145.7 MW-19.0 Mvar

29.8 %0.367 kA

-173.9 MW30.1 Mvar

55.4 %0.444 kA

177.5 MW-22.3 Mvar

55.4 %0.447 kA

-174.8 MW30.3 Mvar

55.7 %0.446 kA

178.5 MW-22.4 Mvar

55.7 %0.450 kA

-81.1 MW22.4 Mvar

28.4 %0.210 kA

83.2 MW-34.9 Mvar

28.4 %0.229 kA

73.9 MW-41.3 Mva..169.2 %0.450 kA

81.2 MW25.9 Mvar142.2 %0.216 kA

-80.9 MW-20.0 Mvar142.2 %0.411 kA

3

81.2 MW25.9 Mvar142.2 %0.216 kA

-80.9 MW-20.0 Mvar142.2 %0.411 kA

3

81.2 MW25.9 Mvar142.2 %0.216 kA

-80.9 MW-20.0 Mvar

142.2 %0.411 kA

3

-38.2 MW-21.5 Mvar

6.1 %0.111 kA

38.3 MW7.7 Mvar

6.1 %0.098 kA

-81.0 MW22.3 Mvar

28.4 %0.210 kA

83.1 MW-34.9 Mvar

28.4 %0.229 kA

-76.9 MW17.0 Mvar

33.4 %0.198 kA

77.8 MW-27.6 Mvar

33.4 %0.210 kA

38.4 MW-2.3 Mvar

16.0 %0.096 kA

-38.3 MW-10.8 Mvar

16.0 %0.100 kA

0.0

MW

0.0

Mva

r0.

0 %

0.00

0 kA

39.1 MW-2.3 Mvar16.7 %

0.098 kA

-38.9 MW-10.8 Mvar

16.7 %0.102 kA

39.1 MW-2.3 Mvar16.2 %

0.098 kA

-38.9 MW-10.8 Mvar

16.2 %0.102 kA

-38.1 MW-21.5 Mvar

6.1 %0.111 kA

38.2 MW7.6 Mvar

6.1 %0.098 kA

-0.0 MW-0.0 Mvar

0.2 %0.000 kA

44.1 MW15.7 Mvar

32.7 %0.117 kA

-43.9 MW-13.9 Mvar

32.7 %0.232 kA

-0.0

MW

-0.0

Mva

r32

.7 %

0.00

0 kA

5 2WRK/WRK220229.44 kV1.04 p.u.

RPO/RPO220231.00 kV1.05 p.u.

HW

A-R

72

BRK/BRK220229.18 kV1.04 p.u.

BPE/BPE110117.15 kV1.06 p.u.

BPE/BPE220227.46 kV1.03 p.u.

PTA_110111.42 kV1.01 p.u.

MTN_110_2 MTN_110_1 112.71 kV1.02 p.u.

WVY/WVY110108.53 kV0.99 p.u.

WGN/WGN110109.86 kV1.00 p.u.

WAA/WAA110110.00 kV1.00 p.u.

HWA/HWA110110.00 kV1.00 p.u.

SFD/SFD110114.61 kV1.04 p.u.

TWH/TWH220229.64 kV1.04 p.u.

HLY/HLY220229.90 kV1.04 p.u.

TMN/TMN220230.14 kV1.05 p.u.

WKM/220229.68 kV1.04 p.u.

SFD/SFD220231.00 kV1.05 p.u.

TNG/TNG220229.47 kV1.04 p.u.

DIg

SILE

NT

PowerFactory 13.2.333

Project:

Graphic: Taranaki 1

Date: 6/8/2009

Annex: NF30W oL1

31.7km

27.9km

47.6km

35.4km

26.6km

2030 Winter110kV HWA-SFD out

-158.3 MW15.1 Mvar

38.6 %0.401 kA

-51.2 MW22.8 Mvar

19.6 %0.140 kA

G~

0.0 MW76.9 Mvar

76.9 %0.404 kA

-67.8 MW61.5 Mvar

0.0 %0.481 kA

-72.9 MW3.6 Mvar95.5 %

0.387 kA

-74.2 MW3.3 Mvar97.3 %

0.395 kA

Load Flow BalancedNodesLine-Line Voltage, Magnitude [kV]Voltage, Magnitude [p.u.]

BranchesActive Power [MW]Reactive Power [Mvar]Maximum Loading [%]

-77.1 MW49.6 Mvar153.5 %0.496 kA

-63.4 MW9.1 Mvar85.7 %

0.347 kA

-62.2 MW9.4 Mvar84.2 %

0.341 kA

-0.0 MW-0.0 Mvar

0.2 %0.000 kA

-0.0 MW14.4 Mvar

14.9 %0.075 kA

69.1 MW-38.1 Mvar

15.4 %0.199 kA

-130.8 MW19.4 Mvar

26.9 %0.332 kA

137.5 MW-21.2 Mvar

26.9 %0.348 kA

144.9 MW-16.7 Mvar

28.2 %0.364 kA

-190.2 MW35.4 Mvar

55.7 %0.486 kA

194.6 MW-24.1 Mvar

55.7 %0.490 kA

-191.3 MW35.6 Mvar

56.0 %0.489 kA

195.7 MW-24.1 Mvar

56.0 %0.493 kA

-99.1 MW28.6 Mvar

31.3 %0.258 kA

102.2 MW-36.4 Mvar

31.3 %0.275 kA

73.3 MW-51.5 Mva..149.0 %0.484 kA

81.4 MW12.0 Mvar127.3 %0.209 kA

-81.0 MW-5.9 Mvar127.3 %0.417 kA

1

81.4 MW12.0 Mvar127.3 %0.209 kA

-81.0 MW-5.9 Mvar127.3 %0.417 kA

1

81.4 MW12.0 Mvar127.3 %0.209 kA

-81.0 MW-5.9 Mvar127.3 %0.417 kA

1

-40.2 MW-21.5 Mvar

5.8 %0.116 kA

40.3 MW7.8 Mvar

5.8 %0.103 kA

-99.1 MW28.6 Mvar

31.3 %0.258 kA

102.2 MW-36.4 Mvar

31.3 %0.275 kA

-104.5 MW22.5 Mvar

36.5 %0.269 kA

106.2 MW-28.2 Mvar

36.5 %0.279 kA

39.4 MW-2.6 Mvar

13.4 %0.099 kA

-39.2 MW-10.5 Mvar

13.4 %0.102 kA

0.0

MW

0.0

Mva

r0.

0 %

0.00

0 kA

40.1 MW-2.6 Mvar13.8 %

0.100 kA

-39.9 MW-10.5 Mvar

13.8 %0.104 kA

40.1 MW-2.6 Mvar13.6 %

0.100 kA

-39.9 MW-10.5 Mvar

13.6 %0.104 kA

-40.1 MW-21.5 Mvar

5.8 %0.116 kA

40.2 MW7.7 Mvar

5.8 %0.103 kA

-0.0 MW-0.0 Mvar

0.2 %0.000 kA

47.0 MW19.2 Mvar

33.6 %0.127 kA

-46.8 MW-17.2 Mvar

33.6 %0.252 kA

-0.0

MW

-0.0

Mva

r33

.6 %

0.00

0 kA

5 2WRK/WRK220229.28 kV1.04 p.u.

RPO/RPO220231.00 kV1.05 p.u.

HW

A-R

72

BRK/BRK220229.21 kV1.04 p.u.

BPE/BPE110112.48 kV1.02 p.u.

BPE/BPE220227.46 kV1.03 p.u.

PTA_110111.42 kV1.01 p.u.

MTN_110_2 MTN_110_1 108.62 kV0.99 p.u.

WVY/WVY110106.85 kV0.97 p.u.

WGN/WGN110106.45 kV0.97 p.u.

WAA/WAA110110.00 kV1.00 p.u.

HWA/HWA110110.00 kV1.00 p.u.

SFD/SFD110114.41 kV1.04 p.u.

TWH/TWH220228.57 kV1.04 p.u.

HLY/HLY220229.90 kV1.04 p.u.

TMN/TMN220229.70 kV1.04 p.u.

WKM/220229.68 kV1.04 p.u.

SFD/SFD220231.00 kV1.05 p.u.

TNG/TNG220229.16 kV1.04 p.u.

DIg

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Needs Identification with Long List of Options © Transpower New Zealand Limited 2009. All rights reserved. 28

Page 33: Home — Electricity Authority

Appendix D

D.3 110 kV BPE-MTN-WGN 1 & 2 circuit With Hawera Generation

PowerFactory 13.2.333

Project:

Graphic: Taranaki 1

Date: 6/8/2009

Annex: NF20S oL1 gen

31.7km

27.9km

47.6km

35.4km

26.6km

2020 Summer110kV HWA-SFD out

with 6MW HWA generation

-138.5 MW11.4 Mvar

36.8 %0.350 kA

-30.7 MW12.2 Mvar

14.7 %0.083 kA

G~

0.0 MW37.9 Mvar

37.9 %0.199 kA

-57.5 MW33.8 Mvar

0.0 %0.350 kA

-64.2 MW-3.5 Mvar

97.7 %0.325 kA

-65.3 MW-3.8 Mvar99.5 %

0.331 kA

Load Flow BalancedNodesLine-Line Voltage, Magnitude [kV]Voltage, Magnitude [p.u.]

BranchesActive Power [MW]Reactive Power [Mvar]Maximum Loading [%]

-63.9 MW27.6 Mvar138.8 %0.367 kA

-56.5 MW0.4 Mvar87.9 %

0.293 kA

-55.5 MW0.7 Mvar86.5 %

0.288 kA

-0.0 MW0.0 Mvar

0.2 %0.000 kA

6.0 MW14.3 Mvar

17.5 %0.080 kA

152.2 MW-29.9 Mvar

31.7 %0.390 kA

-142.3 MW25.3 Mvar

30.8 %0.363 kA

150.3 MW-19.3 Mvar

30.8 %0.379 kA

150.1 MW-18.5 Mvar

30.7 %0.378 kA

-174.2 MW30.2 Mvar

55.5 %0.444 kA

177.8 MW-22.4 Mvar

55.5 %0.448 kA

-175.1 MW30.4 Mvar

55.8 %0.447 kA

178.8 MW-22.4 Mvar

55.8 %0.450 kA

-81.3 MW19.5 Mvar

28.0 %0.209 kA

83.4 MW-32.4 Mvar

28.0 %0.226 kA

60.4 MW-29.0 Mva..132.6 %0.353 kA

71.8 MW23.2 Mvar125.4 %0.191 kA

-71.5 MW-18.6 Mvar125.4 %0.362 kA

3

71.8 MW23.2 Mvar125.4 %0.191 kA

-71.5 MW-18.6 Mvar125.4 %0.362 kA

3

71.8 MW23.2 Mvar125.4 %0.191 kA

-71.5 MW-18.6 Mvar

125.4 %0.362 kA

3

-43.0 MW-17.5 Mvar

6.4 %0.117 kA

43.1 MW3.7 Mvar

6.4 %0.109 kA

-81.3 MW19.5 Mvar

28.0 %0.209 kA

83.3 MW-32.4 Mvar

28.0 %0.226 kA

-72.3 MW13.7 Mvar

31.2 %0.185 kA

73.1 MW-25.0 Mvar

31.2 %0.195 kA

40.1 MW-5.6 Mvar

16.3 %0.101 kA

-39.9 MW-7.4 Mvar

16.3 %0.102 kA

0.0

MW

0.0

Mva

r0.

0 %

0.00

0 kA

40.8 MW-5.7 Mvar17.0 %

0.103 kA

-40.6 MW-7.4 Mvar17.0 %

0.104 kA

40.8 MW-5.7 Mvar16.5 %

0.103 kA

-40.6 MW-7.4 Mvar16.5 %

0.104 kA

-42.9 MW-17.5 Mvar

6.4 %0.117 kA

43.0 MW3.7 Mvar

6.4 %0.109 kA

-0.0 MW0.0 Mvar

0.2 %0.000 kA

39.6 MW13.7 Mvar

29.3 %0.105 kA

-39.4 MW-12.1 Mvar

29.3 %0.208 kA

-0.0

MW

-0.0

Mva

r29

.3 %

0.00

0 kA

5 2WRK/WRK220229.46 kV1.04 p.u.

RPO/RPO220231.00 kV1.05 p.u.

HW

A-R

72

BRK/BRK220229.71 kV1.04 p.u.

BPE/BPE110117.85 kV1.07 p.u.

BPE/BPE220228.30 kV1.04 p.u.

PTA_110111.66 kV1.02 p.u.

MTN_110_2 MTN_110_1 113.96 kV1.04 p.u.

WVY/WVY110109.69 kV1.00 p.u.

WGN/WGN110111.39 kV1.01 p.u.

WAA/WAA110110.00 kV1.00 p.u.

HWA/HWA110110.00 kV1.00 p.u.

SFD/SFD110114.72 kV1.04 p.u.

TWH/TWH220229.63 kV1.04 p.u.

HLY/HLY220229.90 kV1.04 p.u.

TMN/TMN220230.00 kV1.05 p.u.

WKM/220229.68 kV1.04 p.u.

SFD/SFD220231.00 kV1.05 p.u.

TNG/TNG220229.86 kV1.04 p.u.

DIg

SILE

NT

PowerFactory 13.2.333

Project:

Graphic: Taranaki 1

Date: 6/8/2009

Annex: NF30S oL1 gen

31.7km

27.9km

47.6km

35.4km

26.6km

2030 Summer110kV HWA-SFD out

with 16MW HWA generation

-140.4 MW11.8 Mvar

37.3 %0.354 kA

-32.7 MW15.5 Mvar

16.1 %0.091 kA

G~

0.0 MW39.9 Mvar

39.9 %0.209 kA

-53.2 MW32.6 Mvar

0.0 %0.328 kA

-63.7 MW-4.3 Mvar

97.5 %0.325 kA

-64.9 MW-4.6 Mvar99.5 %

0.331 kA

Load Flow BalancedNodesLine-Line Voltage, Magnitude [kV]Voltage, Magnitude [p.u.]

BranchesActive Power [MW]Reactive Power [Mvar]Maximum Loading [%]

-59.6 MW27.0 Mvar130.8 %0.345 kA

-55.6 MW-0.3 Mvar

87.0 %0.290 kA

-54.6 MW0.0 Mvar85.4 %

0.284 kA

-0.0 MW0.0 Mvar

0.2 %0.000 kA

15.9 MW13.7 Mvar

23.1 %0.108 kA

144.3 MW-28.6 Mvar

30.0 %0.370 kA

-137.8 MW23.0 Mvar

29.8 %0.351 kA

145.3 MW-20.1 Mvar

29.8 %0.367 kA

145.5 MW-19.0 Mvar

29.8 %0.367 kA

-173.8 MW30.1 Mvar

55.4 %0.443 kA

177.4 MW-22.3 Mvar

55.4 %0.447 kA

-174.7 MW30.3 Mvar

55.7 %0.446 kA

178.4 MW-22.4 Mvar

55.7 %0.449 kA

-81.0 MW21.5 Mvar

28.2 %0.209 kA

83.1 MW-34.2 Mvar

28.2 %0.228 kA

55.8 MW-28.5 Mva..124.2 %0.330 kA

74.2 MW24.9 Mvar130.3 %0.198 kA

-73.9 MW-20.0 Mvar130.3 %0.377 kA

3

74.2 MW24.9 Mvar130.3 %0.198 kA

-73.9 MW-20.0 Mvar130.3 %0.377 kA

3

74.2 MW24.9 Mvar130.4 %0.198 kA

-73.9 MW-20.0 Mvar

130.4 %0.377 kA

3

-38.4 MW-20.3 Mvar

6.0 %0.110 kA

38.4 MW6.5 Mvar

6.0 %0.098 kA

-80.9 MW21.5 Mvar

28.2 %0.209 kA

83.0 MW-34.2 Mvar

28.2 %0.228 kA

-76.7 MW16.2 Mvar

33.2 %0.197 kA

77.7 MW-26.8 Mvar

33.2 %0.208 kA

38.5 MW-3.1 Mvar

15.9 %0.097 kA

-38.4 MW-10.0 Mvar

15.9 %0.100 kA

0.0

MW

0.0

Mva

r0.

0 %

0.00

0 kA

39.2 MW-3.1 Mvar16.6 %

0.098 kA

-39.0 MW-10.0 Mvar

16.6 %0.101 kA

39.2 MW-3.1 Mvar16.2 %

0.098 kA

-39.0 MW-10.0 Mvar

16.2 %0.101 kA

-38.3 MW-20.3 Mvar

6.0 %0.110 kA

38.4 MW6.5 Mvar

6.0 %0.098 kA

-0.0 MW0.0 Mvar

0.2 %0.000 kA

44.1 MW15.7 Mvar

32.7 %0.117 kA

-43.9 MW-13.9 Mvar

32.7 %0.232 kA

-0.0

MW

0.0

Mva

r32

.7 %

0.00

0 kA

5 2WRK/WRK220229.44 kV1.04 p.u.

RPO/RPO220231.00 kV1.05 p.u.

HW

A-R

72

BRK/BRK220229.31 kV1.04 p.u.

BPE/BPE110117.36 kV1.07 p.u.

BPE/BPE220227.70 kV1.03 p.u.

PTA_110112.00 kV1.02 p.u.

MTN_110_2 MTN_110_1 113.38 kV1.03 p.u.

WVY/WVY110109.48 kV1.00 p.u.

WGN/WGN110110.78 kV1.01 p.u.

WAA/WAA110110.00 kV1.00 p.u.

HWA/HWA110110.00 kV1.00 p.u.

SFD/SFD110114.61 kV1.04 p.u.

TWH/TWH220229.64 kV1.04 p.u.

HLY/HLY220229.90 kV1.04 p.u.

TMN/TMN220230.15 kV1.05 p.u.

WKM/220229.68 kV1.04 p.u.

SFD/SFD220231.00 kV1.05 p.u.

TNG/TNG220229.55 kV1.04 p.u.

DIg

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NT

Needs Identification with Long List of Options © Transpower New Zealand Limited 2009. All rights reserved. 29

Page 34: Home — Electricity Authority

Appendix D

D.4 Duplexing the 220 kV BPE-SFD circuits and 135 MW Waverley Wind Farm

PowerFactory 13.2.333

Project:

Graphic: Taranaki

Date: 6/5/2009

Annex:

Load Flow BalancedNodesLine-Line Voltage, Magnitude [kV]Voltage, Magnitude [p.u.]

BranchesActive Power [MW]Reactive Power [Mvar]Maximum Loading [%]

External GridActive Power [MW]Reactive Power [Mvar]

31.7km

27.9km

47.6km

35.4km

26.6km

DSF20S D

2020 Summer - Maximum South FlowDuplexing 220kV BRK-SFD circuits

-109.1 MW19.5 Mvar218.9 %0.582 kA

0.0 MW0.0 Mvar

0.0 MW0.0 Mvar

0.0 %0.000 kA

-9.3 MW-15.8 Mvar

29.7 %0.099 kA

-10.3 MW-16.1 Mvar

31.0 %0.103 kA

40.7 MW-6.7 Mvar83.2 %

0.221 kA

-2.9 MW-14.3 Mvar

24.1 %0.080 kA

-1.8 MW-14.1 Mvar

23.3 %0.078 kA

-0.0 MW-0.0 Mvar

0.2 %0.000 kA

-0.0 MW14.4 Mvar16.4 %

0.075 kA

-44.2 MW5.3 Mvar90.0 %

0.239 kA

32.0 MW5.0 Mvar55.9 %

0.085 kA

-31.9 MW-4.0 Mvar55.9 %

0.170 kA

1

32.0 MW5.0 Mvar55.9 %

0.085 kA

-31.9 MW-4.0 Mvar55.9 %

0.170 kA

1

32.0 MW5.0 Mvar55.9 %

0.085 kA

-31.9 MW-4.0 Mvar55.9 %

0.170 kA

1

-363.9 MW56.3 Mvar53.3 %

0.968 kA

370.7 MW-11.7 Mvar53.3 %

0.971 kA

264.3 MW36.9 Mvar53.4 %

0.667 kA

-255.5 MW2.4 Mvar53.4 %

0.669 kA

-45.

6 M

W3.

7 M

var

47.9

%0.

239

kA

269.0 MW37.2 Mvar54.3 %

0.679 kA

-260.0 MW3.0 Mvar54.3 %

0.681 kA

269.0 MW37.2 Mvar54.3 %

0.679 kA

-260.0 MW3.0 Mvar54.3 %

0.681 kA

-363.1 MW56.2 Mvar53.2 %

0.966 kA

369.9 MW-11.7 Mvar53.2 %

0.969 kA

G~

0.0 MW23.2 Mvar

23.2 %0.122 kA

563.2 MW169.6 Mvar

-0.0 MW-0.0 Mvar

0.2 %0.000 kA

122.6 MW19.5 Mvar87.4 %

0.310 kA

-122.2 MW-11.3 Mvar

87.4 %0.619 kA

-0.0

MW

-0.0

Mva

r87

.4 %

0.00

0 kA

52

HW

A-R

72

BRK/BRK220220.43 kV1.00 p.u.

BPE/BPE110109.19 kV0.99 p.u.

BPE/BPE220219.60 kV1.00 p.u.

PTA_110111.42 kV1.01 p.u.

MTN_110_2 MTN_110_1 106.78 kV0.97 p.u.

WVY/WVY110107.71 kV0.98 p.u.

WGN/WGN110105.24 kV0.96 p.u.

WAA/WAA110110.00 kV1.00 p.u.

HWA/HWA110110.00 kV1.00 p.u.

SFD/SFD110114.41 kV1.04 p.u.

SFD/SFD220231.00 kV1.05 p.u. D

IgSI

LEN

T

PowerFactory 13.2.333

Project:

Graphic: Taranaki 1

Date: 7/15/2009

Annex: DNF20S D&G

31.7km

27.9km

47.6km

35.4km

26.6km

2020 Summer - Maximum North FlowDuplexing 220kV BRK-SFD circuits

and Proposed Wind Generation

135.0 MW-0.0 Mvar

-145.1 MW13.1 Mvar

38.6 %0.367 kA

-37.6 MW7.9 Mvar16.3 %

0.096 kA

G~

0.0 MW0.0 Mvar

0.0 %0.000 kA

-62.5 MW5.1 Mvar

0.0 %0.319 kA

2.7 MW-13.7 Mvar

21.5 %0.071 kA

1.7 MW-14.0 Mvar

21.7 %0.072 kA

Load Flow BalancedNodesLine-Line Voltage, Magnitude [kV]Voltage, Magnitude [p.u.]

BranchesActive Power [MW]Reactive Power [Mvar]Maximum Loading [%]

External GridActive Power [MW]Reactive Power [Mvar]

66.6 MW0.1 Mvar123.1 %0.327 kA

9.1 MW-12.4 Mvar

23.9 %0.079 kA

10.2 MW-12.1 Mvar

24.6 %0.082 kA

-1.0 MW-8.7 Mvar16.7 %

0.044 kA

-0.0 MW-0.0 Mvar

0.2 %0.000 kA

-0.0 MW14.4 Mvar

16.0 %0.073 kA

156.8 MW-31.8 Mvar

32.7 %0.402 kA

64.9 MW-1.4 Mvar120.1 %0.319 kA

-146.8 MW27.8 Mvar

31.8 %0.375 kA

155.4 MW-18.4 Mvar

31.8 %0.391 kA

155.2 MW-17.6 Mvar

31.7 %0.390 kA

-181.6 MW32.6 Mvar

57.9 %0.464 kA

185.5 MW-23.2 Mvar

57.9 %0.467 kA

-182.6 MW32.8 Mvar

58.2 %0.466 kA

186.6 MW-23.2 Mvar

58.2 %0.470 kA

-89.1 MW15.9 Mvar

29.7 %0.226 kA

91.5 MW-27.5 Mvar

29.7 %0.240 kA

28.2 MW9.7 Mvar49.2 %

0.075 kA

-28.1 MW-8.9 Mvar49.2 %

0.149 kA

1

28.2 MW9.7 Mvar49.2 %

0.075 kA

-28.1 MW-8.9 Mvar49.2 %

0.149 kA

1

28.2 MW9.7 Mvar49.2 %

0.075 kA

-28.1 MW-8.9 Mvar

49.2 %0.149 kA

1

-37.6 MW-9.8 Mvar

5.3 %0.097 kA

37.6 MW-4.4 Mvar

5.3 %0.095 kA

-89.0 MW15.9 Mvar

29.7 %0.226 kA

91.4 MW-27.5 Mvar

29.7 %0.239 kA

-79.2 MW9.1 Mvar33.0 %

0.200 kA

80.1 MW-19.9 Mvar

33.0 %0.207 kA

36.5 MW-11.2 Mvar

7.6 %0.095 kA

-36.3 MW-2.1 Mvar

7.6 %0.091 kA

0.0

MW

0.0

Mva

r0.

0 %

0.00

0 kA

37.1 MW-11.4 Mvar

7.7 %0.097 kA

-36.9 MW-1.9 Mvar

7.7 %0.092 kA

37.1 MW-11.4 Mvar

7.7 %0.097 kA

-36.9 MW-1.9 Mvar

7.7 %0.092 kA

-37.5 MW-9.8 Mvar

5.3 %0.097 kA

37.6 MW-4.4 Mvar

5.3 %0.095 kA

-0.0 MW-0.0 Mvar

0.2 %0.000 kA

39.8 MW19.5 Mvar

30.9 %0.111 kA

-39.7 MW-17.7 Mvar

30.9 %0.219 kA

-0.0

MW

-0.0

Mva

r30

.9 %

0.00

0 kA

5 2WRK/WRK220229.46 kV1.04 p.u.

RPO/RPO220231.00 kV1.05 p.u.

HW

A-R

72

BRK/BRK220230.75 kV1.05 p.u.

BPE/BPE110114.01 kV1.04 p.u.

BPE/BPE220230.12 kV1.05 p.u.

PTA_110114.88 kV1.04 p.u.

MTN_110_2 MTN_110_1 112.57 kV1.02 p.u.

WVY/WVY110117.38 kV1.07 p.u.

WGN/WGN110111.87 kV1.02 p.u.

WAA/WAA110113.50 kV1.03 p.u.

HWA/HWA110113.50 kV1.03 p.u.

SFD/SFD110114.40 kV1.04 p.u.

TWH/TWH220229.56 kV1.04 p.u.

HLY/HLY220229.90 kV1.04 p.u.

TMN/TMN220229.80 kV1.04 p.u.

WKM/220229.68 kV1.04 p.u.

SFD/SFD220231.00 kV1.05 p.u.

TNG/TNG220230.43 kV1.05 p.u.

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Needs Identification with Long List of Options © Transpower New Zealand Limited 2009. All rights reserved. 30

Page 35: Home — Electricity Authority

Appendix D

PowerFactory 13.2.333

Project:

Graphic: Taranaki

Date: 7/15/2009

Annex:

Load Flow BalancedNodesLine-Line Voltage, Magnitude [kV]Voltage, Magnitude [p.u.]

BranchesActive Power [MW]Reactive Power [Mvar]Maximum Loading [%]

External GridActive Power [MW]Reactive Power [Mvar]

31.7km

27.9km

47.6km

35.4km

26.6km

DSF20S D&G

2020 Summer - Maximum South FlowDuplexing 220kV BRK-SFD circuits

and Proposed Wind Generation

-53.7 MW-0.5 Mvar104.8 %0.279 kA

135.0 MW-0.0 Mvar

0.0 MW0.0 Mvar

0.0 %0.000 kA

25.1 MW-26.4 Mvar

59.7 %0.199 kA

24.2 MW-26.8 Mvar

59.2 %0.197 kA

121.7 MW-3.8 Mvar233.7 %0.622 kA

32.2 MW-23.6 Mvar

66.1 %0.220 kA

33.4 MW-23.3 Mvar

67.3 %0.224 kA

-0.0 MW0.0 Mvar

0.2 %0.000 kA

-0.0 MW14.4 Mvar16.2 %

0.074 kA

9.8 MW2.5 Mvar20.1 %

0.052 kA

11.4 MW10.8 Mvar27.4 %

0.042 kA

-11.4 MW-10.6 Mvar

27.4 %0.083 kA

1

11.4 MW10.8 Mvar27.4 %

0.042 kA

-11.4 MW-10.6 Mvar

27.4 %0.083 kA

1

11.4 MW10.8 Mvar27.4 %

0.042 kA

-11.4 MW-10.6 Mvar

27.4 %0.083 kA

1

-360.8 MW46.8 Mvar53.1 %

0.965 kA

367.6 MW-2.4 Mvar53.1 %

0.967 kA

262.2 MW42.6 Mvar53.2 %

0.664 kA

-253.5 MW-3.7 Mvar53.2 %

0.667 kA

9.8

MW

3.5

Mva

r10

.7 %

0.05

4 kA

266.8 MW43.1 Mvar54.1 %

0.676 kA

-257.9 MW-3.2 Mvar54.1 %

0.679 kA

266.8 MW43.1 Mvar54.1 %

0.676 kA

-257.9 MW-3.2 Mvar54.1 %

0.679 kA

-360.1 MW46.7 Mvar53.0 %

0.963 kA

366.8 MW-2.4 Mvar53.0 %

0.965 kA

G~

0.0 MW0.0 Mvar

0.0 %0.000 kA

495.2 MW192.4 Mvar

-0.0 MW0.0 Mvar

0.2 %0.000 kA

78.9 MW20.3 Mvar57.3 %

0.204 kA

-78.7 MW-16.3 Mvar

57.3 %0.406 kA

-0.0

MW

0.0

Mva

r57

.3 %

0.00

0 kA

52

HW

A-R

72

BRK/BRK220219.43 kV1.00 p.u.

BPE/BPE110107.68 kV0.98 p.u.

BPE/BPE220217.73 kV0.99 p.u.

PTA_110112.75 kV1.03 p.u.

MTN_110_2 MTN_110_1 105.75 kV0.96 p.u.

WVY/WVY110113.06 kV1.03 p.u.

WGN/WGN110104.83 kV0.95 p.u.

WAA/WAA110111.35 kV1.01 p.u.

HWA/HWA110111.34 kV1.01 p.u.

SFD/SFD110114.34 kV1.04 p.u.

SFD/SFD220231.00 kV1.05 p.u. D

IgSI

LEN

T

PowerFactory 13.2.333

Project:

Graphic: Taranaki 1

Date: 7/15/2009

Annex: DNF20SH

31.7km

27.9km

47.6km

35.4km

26.6km

2020 Summer - Maximum North FlowDuplexing 220kV BRK-SFD circuits

and Proposed Wind Generation

with Maximum HWA Generation

135.0 MW-0.0 Mvar

-142.2 MW12.3 Mvar

37.8 %0.359 kA

-34.5 MW7.1 Mvar15.1 %

0.088 kA

G~

0.0 MW0.0 Mvar

0.0 %0.000 kA

-41.1 MW-2.0 Mvar

0.0 %0.208 kA

12.5 MW-18.9 Mvar

35.0 %0.117 kA

11.5 MW-19.2 Mvar

34.7 %0.115 kA

57.2 MW-21.7 Mvar115.9 %0.308 kA

89.4 MW-4.1 Mvar165.0 %0.439 kA

19.2 MW-17.2 Mvar

40.1 %0.133 kA

20.3 MW-16.9 Mvar

41.1 %0.137 kA

Load Flow BalancedNodesLine-Line Voltage, Magnitude [kV]Voltage, Magnitude [p.u.]

BranchesActive Power [MW]Reactive Power [Mvar]Maximum Loading [%]

External GridActive Power [MW]Reactive Power [Mvar]

25.0 MW-1.3 Mvar27.0 %

0.126 kA

29.9 MW-2.4 Mvar31.1 %

0.150 kA

161.6 MW-34.0 Mvar

33.7 %0.415 kA

42.2 MW2.8 Mvar78.1 %

0.207 kA

-151.5 MW30.4 Mvar

32.8 %0.388 kA

160.7 MW-17.5 Mvar

32.8 %0.404 kA

160.5 MW-16.7 Mvar

32.8 %0.403 kA

-178.4 MW31.5 Mvar

56.9 %0.455 kA

182.2 MW-22.8 Mvar

56.9 %0.459 kA

-179.4 MW31.8 Mvar

57.2 %0.458 kA

183.2 MW-22.9 Mvar

57.2 %0.461 kA

-85.8 MW14.8 Mvar

28.6 %0.218 kA

87.9 MW-27.2 Mvar

28.6 %0.231 kA

22.7 MW12.3 Mvar

42.5 %0.065 kA

-22.6 MW-11.7 Mvar

42.5 %0.129 kA

1

22.7 MW12.3 Mvar

42.5 %0.065 kA

-22.6 MW-11.7 Mvar

42.5 %0.129 kA

1

22.7 MW12.3 Mvar

42.5 %0.065 kA

-22.6 MW-11.7 Mvar

42.5 %0.129 kA

1

-60.1 MW-5.5 Mvar

8.3 %0.151 kA

60.2 MW-7.8 Mvar

8.3 %0.152 kA

-85.7 MW14.8 Mvar

28.6 %0.217 kA

87.9 MW-27.2 Mvar

28.6 %0.231 kA

-76.1 MW8.5 Mvar31.8 %

0.192 kA

77.0 MW-19.8 Mvar

31.8 %0.199 kA

51.5 MW-12.5 Mvar

10.6 %0.132 kA

-51.2 MW0.2 Mvar10.6 %

0.128 kA

-0.0

MW

0.0

Mva

r0.

0 %

0.00

0 kA

52.4 MW-12.7 Mvar

10.7 %0.135 kA

-52.0 MW0.4 Mvar10.7 %

0.130 kA

52.4 MW-12.7 Mvar

10.7 %0.135 kA

-52.0 MW0.4 Mvar10.7 %

0.130 kA

-59.9 MW-5.5 Mvar

8.3 %0.151 kA

60.1 MW-7.8 Mvar

8.3 %0.152 kA

25.0 MW-1.3 Mvar27.0 %

0.126 kA

-1.6 MW28.0 Mvar

19.2 %0.070 kA

1.7 MW-26.9 Mvar

19.2 %0.136 kA

-0.0

MW

0.0

Mva

r19

.2 %

0.00

0 kA

5 2WRK/WRK220229.46 kV1.04 p.u.

RPO/RPO220231.00 kV1.05 p.u.

HW

A-R

72

BRK/BRK220230.63 kV1.05 p.u.

BPE/BPE110113.75 kV1.03 p.u.

BPE/BPE220230.11 kV1.05 p.u.

PTA_110115.50 kV1.05 p.u.

MTN_110_2 MTN_110_1 112.21 kV1.02 p.u.

WVY/WVY110117.67 kV1.07 p.u.

WGN/WGN110111.46 kV1.01 p.u.

WAA/WAA110114.75 kV1.04 p.u.

HWA/HWA110114.53 kV1.04 p.u.

SFD/SFD110114.00 kV1.04 p.u.

TWH/TWH220229.48 kV1.04 p.u.

HLY/HLY220229.90 kV1.04 p.u.

TMN/TMN220229.59 kV1.04 p.u.

WKM/220229.68 kV1.04 p.u.

SFD/SFD220231.00 kV1.05 p.u.

TNG/TNG220230.44 kV1.05 p.u.

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Needs Identification with Long List of Options © Transpower New Zealand Limited 2009. All rights reserved. 31

Page 36: Home — Electricity Authority

Appendix D

PowerFactory 13.2.333

Project:

Graphic: Taranaki

Date: 7/15/2009

Annex:

Load Flow BalancedNodesLine-Line Voltage, Magnitude [kV]Voltage, Magnitude [p.u.]

BranchesActive Power [MW]Reactive Power [Mvar]Maximum Loading [%]

External GridActive Power [MW]Reactive Power [Mvar]

31.7km

27.9km

47.6km

35.4km

26.6km

DSF20SH

2020 Summer - Maximum South FlowDuplexing 220kV BRK-SFD circuits

and Proposed Wind Generation

with Maximum HWA Generation 135.0 MW-0.0 Mvar

0.0 MW0.0 Mvar

0.0 %0.000 kA

30.8 MW-29.2 Mvar

69.7 %0.232 kA

29.9 MW-29.5 Mvar

69.1 %0.230 kA

136.6 MW-2.2 Mvar260.5 %0.693 kA

38.2 MW-25.8 Mvar

76.4 %0.254 kA

39.4 MW-25.5 Mvar

77.7 %0.259 kA

11.0 MW-12.3 Mvar

31.4 %0.083 kA

25.0 MW-1.3 Mvar27.2 %

0.127 kA

29.9 MW7.2 Mvar32.1 %

0.154 kA

-5.1 MW0.9 Mvar10.4 %

0.026 kA

8.0 MW12.8 Mvar26.2 %

0.040 kA

-7.9 MW-12.5 Mvar

26.2 %0.080 kA

1

8.0 MW12.8 Mvar26.2 %

0.040 kA

-7.9 MW-12.5 Mvar

26.2 %0.080 kA

1

8.0 MW12.8 Mvar26.3 %

0.040 kA

-7.9 MW-12.5 Mvar

26.3 %0.080 kA

1

-356.5 MW44.3 Mvar52.4 %

0.953 kA

363.1 MW-1.4 Mvar52.4 %

0.955 kA

259.1 MW42.1 Mvar52.6 %

0.656 kA

-250.6 MW-4.4 Mvar52.6 %

0.659 kA

-5.1

MW

2.0

Mva

r5.

6 %

0.02

8 kA

263.6 MW42.5 Mvar53.5 %

0.667 kA

-254.9 MW-3.9 Mvar53.5 %

0.671 kA

263.6 MW42.5 Mvar53.5 %

0.667 kA

-254.9 MW-3.9 Mvar53.5 %

0.671 kA

-355.8 MW44.2 Mvar52.3 %

0.951 kA

362.4 MW-1.4 Mvar52.3 %

0.953 kA

G~

0.0 MW0.0 Mvar

0.0 %0.000 kA

417.3 MW196.7 Mvar

25.0 MW-1.3 Mvar27.2 %

0.127 kA

31.1 MW21.4 Mvar26.2 %

0.094 kA

-31.0 MW-19.9 Mvar

26.2 %0.186 kA

-0.0

MW

0.0

Mva

r26

.2 %

0.00

0 kA

52

HW

A-R

72

BRK/BRK220219.51 kV1.00 p.u.

BPE/BPE110107.46 kV0.98 p.u.

BPE/BPE220217.70 kV0.99 p.u.

PTA_110115.50 kV1.05 p.u.

MTN_110_2 MTN_110_1 105.48 kV0.96 p.u.

WVY/WVY110113.82 kV1.03 p.u.

WGN/WGN110104.58 kV0.95 p.u.

WAA/WAA110113.85 kV1.04 p.u.

HWA/HWA110113.64 kV1.03 p.u.

SFD/SFD110114.31 kV1.04 p.u.

SFD/SFD220231.00 kV1.05 p.u. D

IgSI

LEN

T

PowerFactory 13.2.333

Project:

Graphic: Taranaki 1

Date: 6/30/2009

Annex: DNF20SH o3

31.7km

27.9km

47.6km

35.4km

26.6km

2020 SummerDuplexing 220kV BRK-SFD circuits

and Proposed Wind Generation

with Maximum HWA Generation110kV WGN-WVY out

135.0 MW0.0 Mvar

-138.9 MW11.5 Mvar

36.9 %0.351 kA

-31.2 MW7.2 Mvar13.9 %

0.080 kA

G~

0.0 MW-38.4 Mvar

38.4 %0.201 kA

-121.6 MW20.1 Mvar

0.0 %0.647 kA

-29.0 MW-11.7 Mvar

48.9 %0.163 kA

-30.1 MW-11.9 Mvar

50.6 %0.169 kA

-22.4 MW-10.0 Mvar

39.1 %0.130 kA

-21.4 MW-9.7 Mvar37.4 %

0.125 kA

137.6 MW-68.4 Mvar303.2 %0.806 kA

25.0 MW-1.3 Mvar28.1 %

0.131 kA

29.9 MW12.1 Mvar

34.7 %0.165 kA

167.8 MW-36.8 Mvar

35.1 %0.432 kA

131.5 MW-1.3 Mvar243.5 %0.648 kA

Load Flow BalancedNodesLine-Line Voltage, Magnitude [kV]Voltage, Magnitude [p.u.]

BranchesActive Power [MW]Reactive Power [Mvar]Maximum Loading [%]

External GridActive Power [MW]Reactive Power [Mvar]

-157.6 MW33.9 Mvar

34.2 %0.405 kA

167.6 MW-16.2 Mvar

34.2 %0.421 kA

167.4 MW-15.4 Mvar

34.1 %0.420 kA

-174.9 MW30.4 Mvar

55.7 %0.446 kA

178.5 MW-22.4 Mvar

55.7 %0.450 kA

-175.8 MW30.6 Mvar

56.0 %0.449 kA

179.5 MW-22.5 Mvar

56.0 %0.452 kA

-82.1 MW14.4 Mvar

27.5 %0.208 kA

84.1 MW-27.7 Mvar

27.5 %0.222 kA

48.3 MW10.3 Mvar

81.5 %0.124 kA

-48.1 MW-8.2 Mvar81.5 %

0.248 kA

1

48.3 MW10.3 Mvar

81.5 %0.124 kA

-48.1 MW-8.2 Mvar81.5 %

0.248 kA

1

48.3 MW10.3 Mvar

81.5 %0.124 kA

-48.1 MW-8.2 Mvar

81.5 %0.248 kA

1

-87.3 MW-0.7 Mvar12.2 %

0.219 kA

87.7 MW-10.9 Mvar

12.2 %0.222 kA

-82.0 MW14.4 Mvar

27.5 %0.208 kA

84.0 MW-27.7 Mvar

27.5 %0.222 kA

-72.7 MW8.6 Mvar30.6 %

0.184 kA

73.5 MW-20.3 Mvar

30.6 %0.192 kA

69.9 MW-12.9 Mvar

14.2 %0.178 kA

-69.3 MW2.2 Mvar14.2 %

0.174 kA

0.0

MW

0.0

Mva

r0.

0 %

0.00

0 kA

71.1 MW-13.1 Mvar

14.4 %0.181 kA

-70.4 MW2.5 Mvar14.4 %

0.177 kA

71.1 MW-13.1 Mvar

14.4 %0.181 kA

-70.4 MW2.5 Mvar14.4 %

0.177 kA

-87.2 MW-0.8 Mvar12.1 %

0.219 kA

87.5 MW-11.0 Mvar

12.1 %0.221 kA

25.0 MW-1.3 Mvar28.1 %

0.131 kA

-56.0 MW76.6 Mvar

66.5 %0.237 kA

56.3 MW-71.5 Mvar

66.5 %0.471 kA

-0.0

MW

-0.0

Mva

r66

.5 %

0.00

0 kA

5 2WRK/WRK220229.46 kV1.04 p.u.

RPO/RPO220231.00 kV1.05 p.u.

HW

A-R

72

BRK/BRK220230.32 kV1.05 p.u.

BPE/BPE110113.80 kV1.03 p.u.

BPE/BPE220229.86 kV1.04 p.u.

PTA_110112.38 kV1.02 p.u.

MTN_110_2 MTN_110_1 110.89 kV1.01 p.u.

WVY/WVY110117.25 kV1.07 p.u.

WGN/WGN110108.92 kV0.99 p.u.

WAA/WAA110110.22 kV1.00 p.u.

HWA/HWA110110.00 kV1.00 p.u.

SFD/SFD110111.47 kV1.01 p.u.

TWH/TWH220229.37 kV1.04 p.u.

HLY/HLY220229.90 kV1.04 p.u.

TMN/TMN220229.29 kV1.04 p.u.

WKM/220229.68 kV1.04 p.u.

SFD/SFD220231.00 kV1.05 p.u.

TNG/TNG220230.38 kV1.05 p.u.

DIg

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Needs Identification with Long List of Options © Transpower New Zealand Limited 2009. All rights reserved. 32

Page 37: Home — Electricity Authority

Appendix D

PowerFactory 13.2.333

Project:

Graphic: Taranaki 1

Date: 7/15/2009

Annex: DNF20SH o1

31.7km

27.9km

47.6km

35.4km

26.6km

2020 SummerDuplexing 220kV BRK-SFD circuits

and Proposed Wind Generation

with Maximum HWA Generation110kV HWA-SFD out

135.0 MW-0.0 Mvar

-145.0 MW13.1 Mvar

38.6 %0.366 kA

-37.5 MW10.8 Mvar

16.8 %0.098 kA

G~

0.0 MW0.0 Mvar

0.0 %0.000 kA

16.1 MW-14.6 Mvar

0.0 %0.110 kA

34.7 MW-38.6 Mvar

82.3 %0.274 kA

33.7 MW-39.0 Mvar

81.9 %0.273 kA

147.3 MW-15.3 Mvar280.6 %0.746 kA

Load Flow BalancedNodesLine-Line Voltage, Magnitude [kV]Voltage, Magnitude [p.u.]

BranchesActive Power [MW]Reactive Power [Mvar]Maximum Loading [%]

External GridActive Power [MW]Reactive Power [Mvar]

42.3 MW-34.6 Mvar

88.1 %0.294 kA

43.5 MW-34.3 Mvar

89.3 %0.297 kA

25.0 MW-1.3 Mvar27.2 %

0.127 kA

29.9 MW6.8 Mvar32.0 %

0.153 kA

157.0 MW-31.9 Mvar

32.7 %0.403 kA

-15.8 MW14.0 Mvar

41.5 %0.106 kA

-147.0 MW27.9 Mvar

31.8 %0.376 kA

155.6 MW-18.4 Mvar

31.8 %0.392 kA

155.4 MW-17.6 Mvar

31.8 %0.391 kA

-181.4 MW32.5 Mvar

57.8 %0.463 kA

185.3 MW-23.1 Mvar

57.8 %0.467 kA

-182.3 MW32.7 Mvar

58.1 %0.466 kA

186.3 MW-23.2 Mvar

58.1 %0.469 kA

-88.9 MW18.9 Mvar

30.0 %0.227 kA

91.2 MW-30.2 Mvar

30.0 %0.242 kA

8.8 MW25.6 Mvar

44.8 %0.068 kA

-8.7 MW-25.0 Mvar

44.8 %0.136 kA

1

8.8 MW25.6 Mvar

44.8 %0.068 kA

-8.7 MW-25.0 Mvar

44.8 %0.136 kA

1

8.8 MW25.6 Mvar

44.8 %0.068 kA

-8.7 MW-25.0 Mvar

44.8 %0.136 kA

1

-37.8 MW-14.1 Mvar

5.6 %0.102 kA

37.9 MW-0.0 Mvar

5.6 %0.095 kA

-88.8 MW18.9 Mvar

30.0 %0.227 kA

91.2 MW-30.2 Mvar

30.0 %0.242 kA

-79.1 MW12.0 Mvar

33.4 %0.201 kA

80.0 MW-22.6 Mvar

33.4 %0.210 kA

36.6 MW-8.3 Mvar

7.5 %0.094 kA

-36.4 MW-5.0 Mvar

7.5 %0.092 kA

-0.0

MW

-0.0

Mva

r0.

0 %

0.00

0 kA

37.2 MW-8.4 Mvar

7.6 %0.095 kA

-37.1 MW-4.9 Mvar

7.6 %0.094 kA

37.2 MW-8.4 Mvar

7.6 %0.095 kA

-37.1 MW-4.9 Mvar

7.6 %0.094 kA

-37.7 MW-14.1 Mvar

5.6 %0.101 kA

37.8 MW-0.0 Mvar

5.6 %0.095 kA

25.0 MW-1.3 Mvar27.2 %

0.127 kA

39.6 MW13.7 Mvar

29.3 %0.105 kA

-39.4 MW-12.1 Mvar

29.3 %0.208 kA

-0.0

MW

0.0

Mva

r29

.3 %

0.00

0 kA

5 2WRK/WRK220229.46 kV1.04 p.u.

RPO/RPO220231.00 kV1.05 p.u.

HWA-R72

BRK/BRK220230.25 kV1.05 p.u.

BPE/BPE110112.00 kV1.02 p.u.

BPE/BPE220229.23 kV1.04 p.u.

PTA_110115.50 kV1.05 p.u.

MTN_110_2 MTN_110_1 109.15 kV0.99 p.u.

WVY/WVY110114.56 kV1.04 p.u.

WGN/WGN110107.52 kV0.98 p.u.

WAA/WAA110113.89 kV1.04 p.u.

HWA/HWA110113.67 kV1.03 p.u.

SFD/SFD110114.72 kV1.04 p.u.

TWH/TWH220229.56 kV1.04 p.u.

HLY/HLY220229.90 kV1.04 p.u.

TMN/TMN220229.79 kV1.04 p.u.

WKM/220229.68 kV1.04 p.u.

SFD/SFD220231.00 kV1.05 p.u.

TNG/TNG220230.12 kV1.05 p.u.

DIg

SILE

NT

PowerFactory 13.2.333

Project:

Graphic: Taranaki

Date: 7/15/2009

Annex:

Load Flow BalancedNodesLine-Line Voltage, Magnitude [kV]Voltage, Magnitude [p.u.]

BranchesActive Power [MW]Reactive Power [Mvar]Maximum Loading [%]

External GridActive Power [MW]Reactive Power [Mvar]

31.7km

27.9km

47.6km

35.4km

26.6km

DSF20SH o4

2020 Summer - Maximum South FlowDuplexing 220kV BRK-SFD circuits

and Proposed Wind Generation

with Maximum HWA Generation110kV BPE-MTN-WGN out

135.0 MW-0.0 Mvar

0.0 MW0.0 Mvar

0.0 %0.000 kA

125.5 MW4.7 Mvar242.8 %0.646 kA

68.4 MW-40.7 Mvar135.2 %0.450 kA

50.5 MW-52.3 Mvar121.8 %0.406 kA

22.0 MW-17.4 Mvar

53.7 %0.143 kA

25.0 MW-1.3 Mvar27.2 %

0.127 kA

29.9 MW9.1 Mvar32.7 %

0.156 kA

6.0 MW-6.0 Mvar16.4 %

0.044 kA

11.5 MW11.9 Mvar28.8 %

0.044 kA

-11.4 MW-11.6 Mvar

28.8 %0.087 kA

1

11.5 MW11.9 Mvar28.8 %

0.044 kA

-11.4 MW-11.6 Mvar

28.8 %0.087 kA

1

11.5 MW11.9 Mvar28.8 %

0.044 kA

-11.4 MW-11.6 Mvar

28.8 %0.087 kA

1

-361.0 MW46.1 Mvar53.1 %

0.966 kA

367.7 MW-1.6 Mvar53.1 %

0.968 kA

262.3 MW43.3 Mvar53.2 %

0.664 kA

-253.6 MW-4.2 Mvar53.2 %

0.668 kA

6.0

MW

-5.0

Mva

r8.

0 %

0.04

0 kA

267.0 MW43.7 Mvar54.2 %

0.676 kA

-258.0 MW-3.8 Mvar54.2 %

0.679 kA

267.0 MW43.7 Mvar54.2 %

0.676 kA

-258.0 MW-3.8 Mvar54.2 %

0.679 kA

-360.2 MW46.0 Mvar53.0 %

0.964 kA

367.0 MW-1.6 Mvar53.0 %

0.966 kA

G~

0.0 MW0.0 Mvar

0.0 %0.000 kA

419.1 MW205.7 Mvar

25.0 MW-1.3 Mvar27.2 %

0.127 kA

23.1 MW24.8 Mvar23.4 %

0.085 kA

-22.9 MW-23.5 Mvar

23.4 %0.166 kA

-0.0

MW

0.0

Mva

r23

.4 %

0.00

0 kA

52

HW

A-R

72

BRK/BRK220219.31 kV1.00 p.u.

BPE/BPE110107.47 kV0.98 p.u.

BPE/BPE220217.54 kV0.99 p.u.

PTA_110115.50 kV1.05 p.u.

MTN_110_2 MTN_110_1 100.22 kV0.91 p.u.

WVY/WVY110112.26 kV1.02 p.u.

WGN/WGN110102.09 kV0.93 p.u.

WAA/WAA110113.67 kV1.03 p.u.

HWA/HWA110113.46 kV1.03 p.u.

SFD/SFD110114.13 kV1.04 p.u.

SFD/SFD220231.00 kV1.05 p.u. D

IgSI

LEN

T

Needs Identification with Long List of Options © Transpower New Zealand Limited 2009. All rights reserved. 33