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Security of Supply - Participant OutagePlanNMPR.245

^ Powerllet

Gompany Procedure

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1. PURPOSE

This procedure and plan was written to comply with the Electricity lndustry Participation Code 2010

Under the code, the System Operator must prepare a System Operator Rolling Outage Plan(SOROP). The SOROP requires Electricity Distribution Businesses (EDBs) to prepare ParticipantRolling Outage Plans (PROP) that specify the actions that would be taken to reduce theconsumption of electricity to:

reduce electricity consumption when a supply shortage declaration is made by the SystemOperator (after consultation with the Electricity Authority);

comply with requirements of the System Operator's SOROP;

comply with the Electricity lndustry Participation Code 2010 and subsequentamendments; and

supplement the System Operator's SOROP|.

Reducing demand by disconnecting supply to customers would be a last resort after all other formsof savings, including voluntary savings, had been employed. PowerNet will always endeavour tokeep customers supplied. PowerNet will only disconnect customers when directed to by theSystem Operator at Transpower.

2. SCOPE

This document outlines the response to major generation shortages including dry year scenarios.How an event is declared and how the System Operator should communicate its requests aredetailed. The main energy saving measure listed is rolling outages and how these are structuredand implemented is discussed.

3. REFERENCES

System Operator Rolling Outage Plan (SOROP)

4. DEFINITIONS

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AUFLSAuthorityCode

EDNElectricity ActFeederGENGXP

Approved

Automatic Under Frequency Load SheddingElectricity AuthorityElectricity lndustry Participation Code 2010 and subsequentamendmentsElectrical Distribution NetworkElectricity Act 1992 and subsequent amendmentsA medium voltage circuit typically supplying a number of customersGrid Emergency Notice

r Grid Exit Point

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Gompany Procedure

PROPPSTNRetailersRolling Outages orRolling cuts

SOROPSecurity Go-ordinatorSupply ShortageSystem Gontrol

System Gontrol ManagerSystem OperatorTPSN

Participant Rolling Outage Plan (this plan)Public Switched Telephone NetworkElectricity Retail CompaniesPlanned electricity disconnections spread over different partsof the network at differing times to avoid prolonged outages at anyone locationSystem Operator Rolling Outage Plan (SOROP)Person responsible for system security on the Grid (Transpower)Declaration made by the System Operator under Part 9 of the CodeSystem Control manages all faults, repairs, and activity on thePowerNet managed networks (PowerNet)The System Control Manager manages System Control (PowerNet)Operator of the national electricity transmission grid (Transpower)Transpower Speech Network

5. PROCEDURE

5.I. BACKGROUND

5.1.1. Electricity Authority

The Electricity Authority is a Crown entity set up under the Electricity Act to oversee New Zealand'selectricity industry and markets.

A function of the Electricity Authority under the Electricity lndustry Act is to use reasonableendeavours to ensure the security of electricity supply. The Authority's activities includeforecasting supply and demand, developing and publishing guideline hydro levels for security ofsupply, contracting for reserve energy, and improving the ability of customers to manage price risksin the market.

5.1.2. Transpower

Transpower is a State Owned Enterprise, which owns and operates New Zealand's National Grid- the network of high voltage transmission lines and substations that transports electricity fromwhere it is generated to distribution line companies, such as PowerNet Ltd.

As System Operator, Transpower manages the real{ime operation of New Zealand's electricitytransmission system. lt keeps the right amount of energy flowing to match generated supply withdemand.

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Gompany Procedure

5.1.3. PowerNetLimited

PowerNet Limited is the electricity network management company that delivers power tolnvercargill City, Southland, North, South and West Otago and Frankton near Queenstown.PowerNet Limited is responsible for maintaining the electricity lines, cables and substations thatdelivers electricity to customers across lnvercargill City and Southland by Electricity lnvercargillLimited and The Power Company Limited and North, South and West Otago by OtagoNet JointVenture and Frankton by Electricity Southland Limited. The following GXPs are under each ofthese companies.

The Power Gompany Limited GXPslnvercargill (lNV), Gore (GOR), North Makarewa (NMA) and Edendale (EDN)

Electricity lnvercargill Limited GXPslnvercargill (lNV)

OtagoNet Joint Venture GXPsBalclutha (BAL), Halfiruay Bush (HWB), and Naseby (NSY)

Electricity Southland Limited GXPFrankton (FKN)

5.1.4. Gommunication with the System Operator

The System Operator can contact PowerNet using the following details

PowerNet LtdPhone. +64 3 211 1899, Fax: +64 3 211 1880251 Racecourse Road, PO Box: 1642,lnvercargill 9840

PowerNet will contact the System Operator for administration purposes, including reportingperformance against targets, using the following details:

System OperatorTPSN:7700Phone: 04 495 7000svstem. operator(ôtra nspowe r. co. nz

Security Co-ordinatorTPSN: *12

Phone: 0800 488 500

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Company Procedure

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5.2. SUPPLY AND DEMAND

Transpower, as the System Operator, controls the transmission network to match generation withcustomer demand. Constraints on the ability to manage this may be caused by:

low lake levels reducing hydro generation;failure of a large generator; anda fault on criticaltransmission circuit.

The first two causes above could lead to an energy shortage, while the third could lead to ashortage of transmission capacity.

5.2.'1. Load Reduction by PowerNet

PowerNet has some ability to reduce load by turning off domestic water heaters via ripple controlin Southland and parts of Otago. Further load reductions would require disconnecting customers.

5.2.2. Range of Events

Events that could lead the Authority to make a supply shortage declaration can in general termsbe categorised as;

Developing Event: Events that evolve over time, for example low hydro lake levels

lmmediate Event: Events that occur with little or no warning, usually as a result of atransmission line or major generation failure.

5.2.3. Significant lncident

Developing or lmmediate events will be classed by PowerNet as a significant incident and theChief Operating Officer will assemble a team of senior managers and staff to manage the incident.

Communication with retailers, will follow PowerNet's normal notification procedure described in"NPMR-115 Planned Outages". Local Authorities, civil defence and other stakeholders will benotified of significant events by the System Control Manager.

5.3. ACTIONS FOR IMMEDIATE EVENTS

Transpower, as the System Operator, is required to keep enough reserve generation to cover therisk of the largest connected generator tripping (or HVDC link failure). They are also required tokeep the system frequency at 50H2. lf a large generator trips, it may cause a reduction in frequencywhich, if not rectified, can result in other generators tripping and could lead to complete failure ofthe electricity network. As reserve generation cannot immediately pick up the load of adisconnected generator, an immediate load reduction is required until additional generation can

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^ PowerNet

Company Procedure

pick up the load. Automatic load shedding groups reduce load in stages until the frequencystabilises.

5.3.1. Reserve Market

Generators and load users with interruptible load, such as distribution networks, may offer inreserve capacity to cover the risk of the largest generating unit or a critical transmission linetripping. The ability to do this is affected by the numbers of frequency capable relays installed andthe likely revenue stream from the market, less the compliance costs of participating in the reseryemarket. PowerNet does not presently participate in this market.

5.3.2. Disconnecting Customers

5.3.2.1. Automatic Under Frequency Load Shedding (AUFLS)

lf the load shed by the Reserve Market tripping is insufficient to stabilise the network, furtherautomatic load reduction is required.

Each distribution network company must have available at all times two blocks of load, each of160/o of its total load to be shed by automatic under frequency relays. ln the South lslandTranspower has installed these relays on selected 33kV feeders at the GXPs and PowerNet hasinstalled AUFLS relays on selected 33kV and 1 1kV breakers to meet its obligations.

5.3.2.2. AUFLS Zone 1

lf system frequency fails to recover after Reserve market load shed, AUFLS Zone 1 shedding byTranspower will occur. This will disconnect up to 160/o of PowerNet's load by disconnectingcustomers' supply automatically.

5.3.2.3. AUFLS Zone 2

lf zone 1 tripping fails to restore frequency, the next stage, zone 2 activates. Transpower managedprotection relays would disconnect a further 160/o of PowerNet's load automatically.

5.3.2.4. Manual Load Shedding

lf AUFLS Zone 1 and Zone 2 tripping fails to stabilise frequency the System Operator will shedmore load. Once the frequency has stabilised the System Operatorwill advise PowerNet's SystemControl Manager when load can be restored.

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Company Procedure

5.3.3. Supply Restoration

Restoration of disconnected load must be restored in conjunction with the System OperatorThis is to prevent overloading of the transmission network and further instability.

5.3.4. System Operator Direction

The System Operator may direct that rolling outages are required to be implemented either forlmmediate or Developing events. ln either situation, the procedures for Developing Events willneed to be implemented as per Section 5.4.

5.3.5. Transmission Grid Emergency

The System Operator may request PowerNet to reduce load under a Grid Emergency Notice(GEN). PowerNet would commence with shedding water heating load and then, if necessary, shedfeeders as per Emergency Load Shedding List.

lf an lmmediate event is in place, the grid emergency will take precedence

5.4. DEVELOPING EVENTS

lf the System Operator (in consultation with the Electricity Authority) requests a load reduction fora Developing event, PowerNet would reduce demand to meet the System Operator's targets.The targets are expected to be a weekly energy savings target that is reviewed each week.To reduce energy usage PowerNet would disconnect HV feeders (rolling outages) in a controlledmanner to enable targets to be reached. There may be financial penalties for not meeting thetargets specified by the System Operator. The shedding of water heating load is not a viable optionfor energy savings as this only defers usage and would not save energy.

5.4.1. Directions during a Developing Event

The System Operator will endeavour to provide nine days prior notice of the requirement for weeklyenergy savings for a Developing Event. lt is PowerNet's plan to use the standard planned outagenotification procedure to retailers. Any increase in the weekly energy savings target would alsoneed nine days prior notice.

ln the case of a Developing Event, the System Operator will request that a specific weekly energysavings target is to be enforced for a specific region for a specified time-frame. A notificationsystem similar to the GEN procedure would be appropriate. The Authority is expected to managegeneral media advertising of the need to conserve electricity and the impending rolling outages.

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Company Procedure

5.4.2. Griteria for Rolling Outages

To ensure public health and safety is preserved and costs to economy are minimised, priorities areassigned to each load type. Table 1 shows a desired criteria for selecting feeders to be includedin rolling outages.

Tøble 1. - Priority Loods

Prioritv Priority Concern Maintain Supply to:1 Public health and

safetyMajor hospitals, air traffic control centres, andemergency operation centres.

2 lmportant publicservices

Energy control centres, communication networks, waterand sewage pumping, fueldelivery systems, major ports,public passenqer transport and maior supermarkets.

3 Public health andsafety

Minor hospitals, medical centres, schools, and streetliqhtinq.

4 Food production Dairy farms and milk production facilities, chicken shedsand cool stores

5 Domestic production Commercial and industrial premisesb Disruption to

customersResidential premises

These priorities are intended as guidelines, and because rolling outages will be implemented on afeeder by feeder basis, it is not possible to discriminate between individual customers on the samefeeder presentlyl. For example, a predominantly residential feeder may also have small pocketsof commercial or industrial customers. To ensure that this example feeder would not be unfairlyfavoured due to the small presence of higher priority industrial customers, a feeder only gains anoverall priority if the number of priority customers exceeds the weighting seen in Table 2.However, when implementing rolling outages, distributors should generally adopt an approachwhich leads to fewer and shorter outages for high priority customers.

Toble 2 - Feeder priorit¡sotion

Priority Number of lCPs required onfeeder to gain higher feeder

prioritv1 I2 43 64 I5 106 I

Time of day for the outage should also be taken into consideration. A feeder with less than, orequal to, five lCPs on it will inherit the priority of the highest one. This is to ensure that feedersthat are dedicated to a single customer gain the correct weighting when taking into considerationfeeder prioritisation outlined in Table 2.

1 Future smart meter imolementation mav allow for this discrimination

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Gompany Procedure

5.4.3. AUFLS Criteria

Currently, the same criteria for rolling outages as shown in Table I are also used to select 33kVfeeders (zone substations) for AUFLS tripping. Thus, AUFLS load blocks are predominantly fromlower priority load categories however some higher priority customers would also be affected.

For system security reasons, AUFLS blocks are excluded from rolling outages, unless it is possibleto maintain the requirement for two 16% blocks, while rolling outages through a limited number ofAUFLS feeders. An exemption for AUFLS blocks may be available but notice is only likely to beadvised several hours before the commencement of rolling outages. The short notice would makean AUFLS exemption unusable, as it would be too late to amend the publicly available outageschedule and so AUFLS exemption will not be considered.

To minimise the effect of AUFLS exclusion during rolling outages, it is proposed to shift the AUFLSto high priority zone substations. When a Developing event is declared, Transpower will berequested to change the AUFLS blocks to alternative feeders as detailed in the Emergency LoadShedding List. lt is considered prudent to expose high priority customers to a low probability shortterm event, such as AUFLS, rather than have them included in rolling outages. Although PowerNetmay achieve the 5% - 25o/o target without including some high priority feeders, it may be necessaryto roll outages through some higher priority load to achieve the same savings targets.

5.4.4. Shutdown Notification

When requested to reduce demand with rolling outages, PowerNet plans to use the planned outageprocedure NPMR-1 15, to advise retailers in advance, of pending outages. The time and extent ofadvertised outages will be approximate.

5.4.5. Vulnerablecustomers

Retailers maintain lists of customers with health and safety issues. PowerNet will endeavour togive retailers as much advance notice as possible of pending rolling outages to enable them tonotify vulnerable customers. During rolling outages general media releases will advise customerswith health problems as to their best course of action. For example, a residential customer withhealth and safety issues is assigned a priority three, a higher weighting than the typical priority sixfor a residential customer as seen in Table 1.

5.4.6. Grid Emergency during Developing Event

lf the System Operator declares a Grid Emergency during a Developing Event, the Grid Emergencywilltake priority. As water heating load generally would not be used to reduce load in a DevelopingEvent, PowerNet would have the water heating load available for load reduction when required forthe Grid Emergency. lf water heating load is insufficient, the rolling outage feeders may have tobe rearranged to comply with the Grid Emergency. After the Grid Emergency is over, the rollingoutages pattern would continue.

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Company Procedure

5.4.7. Supply Restoration

Disconnected load must be restored in conjunction with the System Operator. This is to preventoverloading the transmission network and creating instability. The System Operator has advisedthat load changes of less than 25 MW in any five minutes may be implemented by a networkwithout their prior approval.

5.4.8. Gommunication

Communication objectives will take account of two security of supply situations:

5.4.8.1. Developing Event

The System Operator will provide up to a 14-day notice of a security of supply situation and up toa 9-day notice of a saving target.

5.4.8.2. lmmediate Event

An immediate event has little or no notice. PowerNet will act under the instruction of the SystemOperator in managing the situation.

ln both cases PowerNet will keep media and customers informed of planned interruptions to supplybefore and during the outages. Media will be informed as per PowerNet's standardcommunications procedure, and the retailers will be responsible for customer notification.

5.4.8.3. Communication with System Operator

All communications with the System Operator will be between PowerNet's System ControlManager and Regional Operating Centre using Transpower's TPSN telephone in lnvercargill andvia Chorus' PSTN.

5.4.8.4. Goordinating with the System Operator

lf PowerNet has to depart from forecast load profile during rolling outages, PowerNet willcommunicate direct with Security Coordinator at the System Operator rather than with RegionalOperating Centre.

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Company Procedure

5.4.8.5. PowerNet Contact

Michelle HendersonChief Operating OfficerPhone: +64 3 211 1899, DDI: +64 3 211 8811, Mobile: +64 27 204 486427 Onslow Street, PO Box: 1642,lnvercargill 9840m hende rson@powernet. co. nz

Kana ShanmuganathanSystem Control ManagerPhone: +64 3 211 1856, DDI: +64 3 2111856, Mobile: +64 27 433 6757251 Racecourse Road, PO Box: 1642,lnvercargill 9840kshanmuqanathan@powernet. co. nz

5.4.8.6. System Operator

System OperatorTPSN:7700Phone: 0800 THE GRIDsvstem. operator@transpower. co. nz

5.4.9. POWERNET Staff Responsibilities

Within one day of declaration of a Developing event, the Chief Operating Officer will notify theSystem Operator of the updated contact details including telephone numbers and email addressfor each of the positions named in Table 3.

Table 3 - PowerNet Stoff Responsibilities

Role PowerN et Person Responsi ble

Receive communication from Authority Chief Operating Officer

Receive communication from System Operator System Control Manager

lmplement this plan Chief Operating Officer

Weekly savings reporting System Control Manager

Retailer notification System Control Manager

Revoking rolling outages Chief Operating Officer

Reporting to Electricity Authority Chief Operating Officer

Reporting to media, public agencies System Control Manager

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,l^PowerHet

Company Procedure

5.4.10. Rolling Outages Strategy and Methodology

The Chief Operating Officer together with the System Control Manager will review weekly targetsand prepare plans for weekly rolling outages based on savings required. The plans will befon¡varded to the retailers for customer and media notification. Rolling outages will whereverpossible disconnect feeders using priority listed in Table 1.

Planned energy savings will be based upon network energy usage for same period last year.

5.4.11. Target Monitoring

Actual energy savings will be measured by plotting the normal network load graph during period ofplanned rolling outages and plotting a saving curve for the same period. This way energy savingscan be calculated and monitored.

For load shedding to meet a weekly target, the System Control Manager will monitor energysavings against target and, together with the Chief Operating Officer, review future load shedding.They will adjust future feeder selection to compensate for any under or over achieving of targets.The System Control Manager will be responsible for daily and weekly reporting of consumptionrelative to target levels. During the period of rolling outages, the System Control Manager willreport:

Daily to the Security Coordinator (at the System Operator) with a week-ahead half hourlyforecast of demand at each GXP including the impact of the rolling outages;Weekly by email to the System Operator and the Authority with the actual energy usagecompared with energy used in corresponding week of previous year.

The System Control Manager will report any under or over achieving of targets to theChief Operating Officer to enable adjustments to be made in the following week's feeder selectionon a three-daily basis.

5.4.12. Log of Rolling Outages

PowerNet's System Controllers will log times of disconnection and reconnection of all feederinterruptions and enter in the log. The log sheet to be used by PowerNet's System Controllers isshown in AppendixT .1. These will be used to monitor the rolling outage program.

5.5. ROLLING OUTAGES

When instructed by the System Operator, following a supply shortage declaration, to reducedemand, rolling outages will be instigated by the System Control Manager as per this plan andoutage strategy. The System Control Manager will ensure load shedding schedules are prepared,system control rosters are adjusted as required, and load is controlled and monitored to meetdesired targets.

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Company Procedure

Schedules of estimated load shedding, restoration times and quantities are to be fonruarded to theSystem Operator seven days before the planned outage. lf significant variation (of morethan +/- 20%) is noticed, or expected, from the schedules provided to the System Operator thenPowerNet shall advise the System Operator (Security Coordinator) of this change.

Where possible, PowerNet will comply with the priorities in Table 1 to select feeders for rollingoutages.

Outages will be programmed between 0800 and 1800 on all days. Night time is excluded from theoutage period for safety reasons. lnitially outages will be scheduled for mid-afternoon to limit theeconomic effects.

Timing of outages will be approximate and could vary daily due to network or System Operatorconstraints.

5.5.1. FeederSelection

Feeders to be disconnected are shown in AppendixT.2 to 7.5 Rolling Outage Feeder Schedules.Table 4 to Table I are based upon priority guidelines shown in Table 1. Generally, feeders will bechosen from the bottom of the table first. The number of feeders chosen for any week will dependupon the level of savings required to meet target.

Toble 4 - Durot¡on of Doily outoges per Customer Group for 5% Sovings

Customer GroupPriority

MaximumDuration

Days perweek

Expected Energy Savings

1. 0.0000%2 0.0000%

3 0.0000%

4 4 7 5.2258%5 4 7 O.574Io/o

6 4 7 O.50670/o

Total 6.3067%

Tqble 5 - Durat¡on of Daily outoges per Customer Group for L0% Sav¡ngs


MaximumDuration

Days perweek


1. 0.0000%2 0.0000%

3 0.0000%4 8 7 9.9959%5 8 7 1.0737%

6 8 7 0.9598%Total L2.0294%

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Gompany Procedure


MaximumDuration

Days perweek


T 0.0000%

2 0.0000%

3 0.0000%

4 10 7 L2.51,1,5%

5 10 7 L.2932%

6 10 7 1,1934%

Total 74.9981%

Toble 6 - Duration of Doily outages per Customer Group for L5% Sovings

Table 7 - Durotion of Doily outoges per Customer Group for 20% Savings

Table 8 - Durat¡on of Daily outoges per Customer Group for 25% Savings


MaximumDuration

Days perweek


1. 0.0000%2 6 7 L.4933%

3 10 7 8.5984%4 10 7 12.5LL5%

5 10 7 7.2932%

6 1_0 7 L.1934%

Total 2s.0898%

The outage durations are indicative only and will be reviewed daily to achieve the specified targets

5.5.2. GontingentEvents

lf an unplanned event occurs, such as a Civil Defence emergency that could alter the plannedrolling outages, the System Control Manager will be responsible for communication with retailersof any changes to the advertised program.

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MaximumDuratíon

Days perweek


L 0.0000%

2 0.0000%

3 6 7 5.37L6%4 10 7 12.5LL5%

5 10 7 L,2932%

6 10 7 L.L934%

Total 20.3697%

Chief Operating Officer


"ñ..,',' Powerflet

Company Procedure

5.5.3. GustomerLiaison

For major customers, with dedicated HV feeder supplies, short-term rolling outages may not beappropriate. As an alternative, longer single outages could be offered if that was easier for themto plan for.

Other customers are advised to contact PowerNet for information on the priority of the feeder theyare supplied from and outage times.

6. RECORDS

7. APPENDICES

Appendixl-OutageLogAppendix 2 - Electricity lnvercargill Limited Rolling Outage Feeder NamesAppendix 3 - The Power Company Limited Rolling Outage Feeder NamesAppendix 4 - OtagoNet Joint Venture Rolling Outage Feeder NamesAppendix 5 - Electricity Southland Limited Rolling Outage Feeder Names

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Company Procedure

7.1. Appendix I - Outage Log

Date Controller:

FeederNo

Load(amps)

No. ofCustomers

Timeoff

TimeOn

Duration Notes

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Security of Supply - Participant OutagePlanNMPR-245

.,,-F\'1 Powerllet

Gompany Procedure

7.2. Appendix 2 - Electricity lnvercargill Limited Rolling Outage Feeder Names

Table 9 - Electricity lnvercargill Limited Roll¡ng Outoge Feeder Names

Feeder Príority AUFLS

GroupCount oÍ ICP 4hr

Window0.0503%

0.0895%

o.o707%

o.1504%

o.to940/o

0.2417%

0.0200%

0.7554%

o.79L0%

0.088s%

o.2023%

o.1307%

0.0s3s%

0.0776%

0.o26s%

o1370%

o.2669%

o.o8L8%

0.0s05%

o.1940%

0.r5L9%

0.0515%

0.o92r%

o.2318%

o.L935%

o.2730%

o.0215%

o.1456%

6hrWíndowo.o7sL%

o.L3to%

0.Lo42%

o.2234%

o.1,600%

0.3553%

o.0293%

o.223L%

o.2753%

o.7240%

0.2985%

0.L843%

0.0779%

0.0258%

o.o39s%

0.2029%

o.389s%

o.1,L94%

o.0739%

o.2878%

o.223L%

o.0727%

o.1283%

o3400%0.2864%

0.4030%

o.0373%

o.2097%

thrWìndowo.0987%

0.1704%

o.L352%

0.2918%

0.2088%

0.46L0o/o

0.0370%

o.2840%

o.3489%

o.7539%

o.3883%

o.2288%

o.o99L%

o.0331%

o.0522%

o.2643%

05066%o.1558%

0.0946%

0.3728%

0.2879%

0.0901%

0.1574%

o.4362%

0.3728%

0.52LO%

O.O4O2o/o

o.2664%

70 hrWindowo.LL88%

o.2076%

o.76L8%

o.3525%

o.2527%

o.5527%

o.o4s8%

0.3s08%

o.43L4%

0.t898%O.4721o/o

0.28L4%

0.L230%

0.0399%

0.0647%

o.328s%

o.6160%

o.L89I%O.LI6Io/o

0.4530%

o3609%oJ,126%

o.L968%

o5463%

o.4659%

o.6559%

O.O49Oo/o

o.3245%

LEV 7

SPY72

LEV 8

LEV11

LEV 6

LEVTO

SPY 5

SPY 6

SPY 7

SPY 8

SPY 9

SPYTO

SPY77

SPY73

SPY74

LEV1.2

LEV73

LEV 9

RRD1.12

RRD 6

RRD 8

RRDTO

RRD72

sou 6

sou 9sou10soIJ 72

sou 8

18

166

99

97

L70

254

975

794

348

527

453

686

L482

T

123

632

737

54

96

709

L093

313

78L

1352

72tL23s8

1.

740

6

5

4

4

3

3

3

3

3

3

3

3

3

3

3

2

2

t6

3

3

3

3

3

3

3

2

2

1.

tL

L

L

2

2

2

2

2

2 Calculated from total substation load. Will be updated when information becomes available

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Company Procedure

7.3. Appendix 3 - The Power Company Limited Rolling Outage Feeder Names

Table 10 - The Power Company Limited Rolling Outoge Feeder Nomes

Feeder PríorÍty AUFLS

Percent Energy Soved

Count oÍ ICP 4 hr 6 hr I hr 70 hrWindow WÍndow Window Wíndow

AHL 3

AWA 7

AWA 3

BLF 3

coL gi

HIL 3

IBK 4

IBK 5

MAK 3

MOS 2

OHA 3

OHA 5

SEA 5

WTN13

CEN 2

CHL 7

CHL 2

CHL 5

CHL 6

coLL0

DIP 1

DIP 2

FONT

GLM 7

HGH 3

HGH 4

HGH 5

HIL 1-

HIL 2

IBK 3

LUM 1

LUM 2

LUM 6

MAK 4

MAK 7

6

5

5

5

5

5

5

5

5

5

5

5

5

5

4

4

4

4

4

4

4

4

4

4

4

4

4

4

4

4

4

4

4

4

4

26

T

tt4L

36

58

r2098

76

109

6t1

166

1L3

L

93

7T

1

129

1

137

208

1

180

1_55

95

57

L35

1,64

130

205

175

76

2

23L

o.0ro3%

O.O213o/o

o.0438%

o.0078%

0.0003%

o.0028%

o.0348%

0.0405%

o.0696%

o.0343%

o.or40%

o.0271%

o.o37t%

o.o3r7%

o.1077%

o.0250%

o.0207%

o.oo54%

o.0324%

0.1453%

0.0506%

o.0703%

L.0238%

O.O447o/o

o.0276%

o.0395%

o.oL80%

o.072r%

o.0283%

o.0337%

o.0543%

o.0587%

0.0310%

o.o83t%

0.0479%

o.otso%o.o3r4%

o.0647%

o.oLL2%

0.000s%

o.oo37%

o.o474%

o.0507%

o.Lo35%

0.0so2%

0.0199%

o.0404%

0.0s18%

0.0436%

o.1,447%

0.0358%

o.0297%

o.oogL%

o.o4s9%

0.2L78%

o,o72L%

o.0987%

L.53O4o/o

0.0629%

o.o41,L%

0.0s89%

0.0268%

O.Ot78o/o

0.0409%

0.0458%

0.0742%

0.0850%

0.0462%

o.1243%

o.o6s9%

o.oL97%

o.o37t%

0.o8s6%

o.oL45%

0.0006%

o.0044%

0.o6L4%

0.0637%

0.L365%

0.0649%

o.o26L%

0.0s29%

o.0648%

0.0s6s%

o.1877%

o.0466%

o.0383%

o.0106%

o.0604%

o.2903%

0.0950%

o.1302%

2.0395%

o.o82t%o.0547%

o.o784%

o.0357%

o.0231%

o.0537%

o.os83%

o.o9s7%

o.1,128%

o.0615%

o.1,647%

o.o85L%

o.0249%

0.o371%

o.Lo6s%

o.0173%

o.ooo7%

o.00s2%

o.0796%

o.0840%

o.L674%

o.0794%

o.0334%

o.0619%

O.O82Oo/o

o.0730%

o.2435%

o.0s96%

o.048t%o.oL25%

o.0778%

o.3629%

O.LZL7o/o

o.1,673%

2.554I%o.Lo59%

o.0685%

o.0982%

O.0448o/o

o.0288%

o.0662%

o.0738%

O.t246o/o

0.1428%

o.0770%

0.2049%

o.1097%

lssue No 330361 07

22May 2017 of24Chief Operating Officer


./^. Powerllet

Gompany Procedure

Table L0 - The Power Company Limited Rolling Outage Feeder Names

Feeder Priority AUFLS Count oÍ ICP

Group

Percent Energy Saved

4hr 6hr 8hr 70hrWindow Window Wíndow Window

MAT 3

MAT 4

MON 2

MOS 3

MOS 4

MOS 5

NGR 3

NGR 5

OHA 6

ORA 7

ORA 2

ORA 3

OTU 1

OTU 2

OTU 4

OTU 5

RTN 3

RTN 4

RTN 5

RTN 6

SEA 4

SGR 6

TEA 3

UND 6

WAK 2

WTNl.O

WTN77

LUM 5

MAK 5

MAK 6

MAT 5

MAT 6

OHA 4

OTU 3

RRD1.3

RTN 7

SEA 6

4

4

4

4

4

4

4

4

4

4

4

4

4

4

4

4

4

4

4

4

4

4

4

4

4

4

4

3

3

3

3

3

3

3

3

3

3

169

2

94

6t178

168

355

26tL73

192

tL4L63

81

124

158

4

101_

100

t24138

227

L94

355

L

248

177

226

290

385

388

855

2t4517

495

LO4

66s

382

0.0401%

0.L177%

0.0085%

o.oLÙs%

0.0509%

0.0461%

o.o8r2%

o.o789%

o.0623%

o.0473%

0.0287%

0.0398%

0.0508%

0.0s00%

o.o704%

0.0264%

0.0066%

0.0092%

o.0484%

o.0706%

o.0668%

0.0366%

01065%O.2452o/o

o.0548%

o.0542%

O.O9160/o

o.0423%

0.1270%

o.0620%

0.0881%

o.L397%

0.080s%

o.o974%

o.0525%

o.1,584%

o.7443%

o.0569%

0.L755%

0.0126%

o.oL52%

o.o723%

o.o6s3%

o.1,L63%

o,tL26%

0.0852%

o.064s%

o.0405%

o.o54r%

o.067t%

o.0667%

o.0923%

0.038s%

0.0090%

o.ot25%

o.0666%

o.0992%

o.091,4%

o.os26%

o.1527%

0.36760/o

o.077L%

0.0734%

o.1328%

o.06L8%

o.L703%

0.0880%

o.7287%

o.2075%

o.It69%oJ,400%

0.o747%

o.227r%

o.2L42%

o.073s%

o.2328%

0.0167%

0.0202%

o.0954%

0.0863%

o.ß05%o.1448%

O.I1,I2o/o

0.083s%

o.0529%

0.0702%

o.o8s2%

0.0863%

o.It82%0.0s08%

o.oL76%

o.oL58%

o.0868%

o.L284%

0.L197%

0.0683%

0.L959%

0.4883%

0.0998%

o.0948%

0.1766%

o.o79s%

o.2233%

o.7t35%0.t696%

0.2735%

o.t544%

0.L832%

0.0955%

0.2918%

0.2841%

0.0935%

o.2880%

o.0208%

o.o2s7%

o.1220%

o.tLLo%

o.1887%

o.1802%

O.t429o/o

o.to82%

0.0677%

o.0907%

o.1,106%

o.Lr24%

o.L548%

o.0579%

o.or50%o.0206%

o1123%

o.t666%

o.1576%

o.0867%

o.2399%

o.6068%

0.1279%

o.L236%

o.2230%

o.0983%

o.2886%

o.1447%

o.2150%

0.33s8%

o.L965%

o.2343%

o.L1,65%

o.3659%

o.3478%

lssue No 330361 07

22 May 2017of24Chief Operating Officer


:^PowerHet

Gompany Procedure

Toble L0 - The Power Compony L¡m¡ted Rolling Outage Feeder Nomes

Feeder Priority AUFLS

Group


Count of ICP 4 hr 6 hr I hr 70 hrWindow WÍndow Window Window

SGR 4

s6R 5

TEA 2

TEA 4

TEA 6

UND 5

WTN 7

WTN 8

WTN 9

WTN1.2

BLF 5

coL INGR 4

ORA 4

RTN 2

UND 4

AHL 5

NGR 6

SEA 3

SEA 7

SGR 3

TEA 5

GRD 7

OTA 1

OTA 3

WAI5EDN 3

EDN 5

GRD 2

GRD 3

RSD 7

RSD 2

RSD 3

TOK 2

EDN 2

EDN 6

EDN 7

L

L

L

1.

!1"

L

7

1,

T

L

L

T

1,

7

3

3

3

3

3

3

3

3

3

3

2

2

2

2

2

2

L

1

t1.

L

L

5

5

5

5

4

4

4

4

4

4

4

4

3

3

3

L26L

749

L68

721

760

251

522

694

s62754

195

3

737

475

904

336

429

t34r611,

ro52251,

389

52

221,

376

349

22L

223

166

L68

348

169

332

242

567

2L9

140

o.3436%

o.ts07%0.0308%

0.1243%

o.0894%

0.0s79%

0.0900%

o.0696%

o.2157%

0.L498%

0.L833%

0.157t%

o.0882%

o.roL7%

0.01,63%

0.0636%

o.oL14%

o.3324%

o.r6L5%

o.1469%

o.oss7%

0.0399%

o.0128%

0.0444%

o.0663%

o.0495%

0.0908%

o.t7L2%

0.os84%

0.065s%

o.0990%

o.0599%

O.O748o/o

o.o36s%

o.too6%

O.O455o/o

0.0469%

o.so66%

0.2202%

o.o45r%

0.L826%

o.1282%

o.0836%

o.1255%

o.0942%

0.3L76%

0.2163%

o.2739%

o.2357%

o.7300%

o.1465%

0.0240%

0.0907%

0.0L63%

o.4871%

o.2396%

o.2183%

o.0796%

o.o574%

0.or75%

0.0627%

0.O9600/o

0.0688%

o.L259%

o.zsro%o.0788%

o.o89I%0.L392%

0.0834%

0.L076%

o.o5r9%oJ,450%

0.0650%

0.0646%

0.6s83%

o.2828%

0.0593%

o.2376%

o.t632%o.ro83%o.t6s2%0.1221%

o.4L42%

0.27s5%

o.36Ls%

o.31,42%

o.L686%

o.t9t4%0.0308%

o.1170%

0.0207%

0.6299%

0.3L46%

0.2844%

0.L022%

O.O737o/o

o.0226%

o.o80t%o.L230%

o.0854%

o.1620%

o.33rs%

o.0998%

o.It45%0.I823o/o

0.1088%

0.1388%

0.0680%

o.1895%

0.0855%

0.0847%

0.8O600/o

0.3sto%O.O735o/o

o.2951%

o.1996%

o.7343%

o.2L39%

o.t578%

0.s099%

0.3354%

o.4462%

O.39260/o

o.2096%

o.2343%

O.O378o/o

o.7494%

o.0256%

o.7737%

o.3929%

0.3ss8%

o1303%0.ogLo%

0.0294%

o.roL6%

0.L52L%

0.ro58%o.2080%

o.4158%

o.1291%

o.L489%

o23s7%o.L409%

o.L739%

o.o879%

o.2417%

o.7094%

o.7It0%

lssue No 330361 07

22 May 2017of24Chief Operating Officer


.^'i:, Powerltlet

Company Procedure

Table 10 - The Power Compony Limited Rolling Outoge Feeder Nomes

Feeder Príority AUFLS


Count ol ICP 4 hr 6 hr I hr 70 hrWindow Window Window Window

OTA 2

RRD 5

WAI3WAI4RSD 4

TOK 1

WAI6KEN 3

GLM 2

KEL 7

KEL 3

KEL 4

KEN 4

KEL 2

KEN 5

686

347

L286

609

469

316

L757

4L

159

372

1.16

1L8

190

677

s03

o.L046%

o.0381%

0.2493%

0.L762%

0.0883%

o.0432%

o.2338%

O.2I49o/o

o.0272%

o.0892%

o.0334%

o.0309%

o.0619%

0.1464%

o.L650%

0.L448%

O.O533o/o

0.3597%

o.2565%

o.1266%

0.0630%

0.34O3o/o

o.3L67%

0.0397%

o.1272%

o.o4s2%

o.0426%

0.0863%

O.2Ù93o/o

o.2325%

o.L789%

o.0657%

0.4555%

o.3320%

o.L642%

o.o8L3%

o.4370%

o.4L8r%

0.0515%

0.L675o/o

0.0s88%

0.0556%

o.IL29%o.2733%

o.3057%

o.2260%

o.0822%

o.5645%

o.4056%

o.2084%

o.tor6%o.5349%

o.5ro3%

o.0660%

o.2L44%

o.0778%

o.o726%

o.L464%

O.34I8o/o

o.3949%

3

3

3

3

2

2

2

5

4

4

4

4

4

3

3

L

L

T

tL

t1,

2

2

2

2

2

2

2

2

lssue No 330361 07

22May 2017Page 2O of 24Chief Operating Otficer


; Powerüet

Company Procedure

7.4. Appendix 4 - OtagoNet Joint Venture Rolling Outage Feeder Names

Toble 11- - OtagoNet loint Venture Rolling Outage Feeder Names

Feeder Prioríty AUFLS Count of ßP 4 hrWindow0.0488%

0.0797%

0.0680%

o.ot2L%

o.o476%

0.oLL4%

o.0365%

0.0sL0%

O.02o1o/o

o.oo45%

o.oo78%

o.oo70%

o.oo33%

o.0840%

o.0243%

o.0846%

o.Lo32%

o.0636%

o.oL99%

o.0123%

o.03L2%

o.ot26%o.o6L3%

o.2259%

0.8309%

o.063r%

o.o39r%

0.03s3%

o.0L00%

0.0429%

o.0376%

o.o5L2%

0.0510%

o.0449%


6hr thrWindow Window

FIN 2

MID 2

WPT 2

CLK 7

MLN 7

CLY 3

PML 2

MLN 3

WPT 3

HIN 3

CLK 3

HYD 2

HIN 2

HYD 7

FIN 3

MLN 2

CLY 7

FIN 7

MID 4

DPD 7

WPT 1.

HIN 4

LNB CB7

GFD

PPCS3

STL 5

PML 3

MID 3

CLK 2

WAT 3

WAT 2

OWA 2

OWA 3

OWA 4

6

6

6

6

6

6

6

6

6

6

6

6

6

6

6

5

4

4

4

4

4

4

4

4

4

4

3

3

3

6

6

6

6

6

1.

L

L

L

L

160

74

6L

56

54

53

52

46

40

34

33

32

26

25

18

T

225

105

85

77

7L

6L

44

1.

tt

322

159

67

285

262

252

207

136

o.o7L4%

o.o29t%

0.0938%

0.0L74%

0.0699%

0.01,46%

0.0469%

o.o760%

o.0294%

o.0066%

o.oLt7%

o.oLol%0.0050%

o.1258%

o.0360%

0.r24r%O.L494o/o

0.o87r%

0.0295%

0.0182%

0.0461%

o.oL86%

0.089s%

0.3372%

L.2349o/o

0.0869%

0.0558%

o.0527%

o.0144%

O.06O60/o

o.o57t%o.0729%

o.o753%

o.0630%

0.0936%

0.0378%

o.L206%

0.0225%

0.0932%

o.or84%

o.os82%

o1000%0.0389%

o.oo84%

o.oL54%

o.oL34%

o.0066%

o.1,675%

o.0470%

o.1654%

o.198L%

o.7L27%

o.0386%

o.0240%

o.0607%

o.0245%

o.7L69%

o.4485%

L.6257%

o.tLI7%o.0729%

o.0693%

o.oL86%

o.o778%

o.o64t%

o.0937%

0.0980%

o.o8t8%

70 hrWîndowo.1,L8L%

o.0479%

o.1535%

o.0280%

o.tL74%

o.0235%

o.o760%

0.1,L85%

o.0489%

O.OLO o/o

0.oL94%

o.oL66%

O.OO82o/o

0.2090%

o.0543%

0.1733%

o.25t3%

0.1-45Io/o

0.0487%

o.0295%

0.0754%

0.0306%

o.t457%

o56rr%r.9716%

o.t439%

o.0924%

0.0868%

o.0232%

0.0982%

o.0804%

o.1,r71%

o.1212%

o.Lo46%

3 Fed from FIN-52

lssue No 330361 07



*Ê\\; Powerltlet

Company Procedure

Tøble 11 - OtagoNet Jo¡nt Venture Rolling Outage Feeder Names

Feeder Priority AUFLS Count ol ICP 4 hrWindow


6hr thrWindow Wíndow

KAI 4

MER 3

OWA 5

KAI 1

RAN 4

PAT 1

RAN 5

PAT 2

MER 5

RAN 7

MER 2

KAI3

WAT 1

RAN 3

OWA 7

NBL 2

LAW 1

WHL 2

WHL 4

LAW 3

cLt 7

GLN 1-

CLY 2

CLY 4

NBL 3

CLI 3

WHL 1

ELD 3

NBL 7

ELD 1

CHS 3

CHS 4

CLI 2

PAL 2

cHs IELD 2

CHS 2

6

6

6

6

4

4

4

4

3

3

3

3

3

3

3

6

6

5

4

4

4

4

4

4

4

4

4

3

3

3

3

3

3

3

3

3

3

L

7

7

ItL

L

L

L

1,

1.

T

L

L

L

2

2

2

2

2

2

2

2

2

2

2

2

2

2

2

2

2

2

2

2

2

2

85

82

74

40

LL2

91

75

54

80s

5L0

473

453

425

412

193

237

163

228

27L

254

204

184

r82L30

t20L09

80

602

525

502

448

417

382

377

337

330

324

o.0615%

o.0235%

o,0r7L%

0.0279%

o.0548%

0.0s33%

o.o24s%

0.0s8L%

o.2665%

o.0799%

o.o575%

o.0980%

o.o762%

o.t15r%o.0309%

0.0404%

o.o273%

0.050s%

0.0389%

0.0760%

0.0946%

0.0729%

0.L3tL%

o.Ltor%o.0L42%

0.06s1%

o.0220%

o.2197%

o.L580%

o.2604%

o.L502%

o.1263%

o.Lo3L%

o.0979%

o.2034%

o.1,418%

o.L488%

0.0843%

0.0348%

o.o2so%

o.0373%

o.0821%

o.0790%

o.0360%

o.0863%

0.39s0%

o.1,L68%

o.0824%

O.I378o/o

o.1073%

o168t%0.0455%

o.os77%

o.0402%

0.0729%

o.0566%

o.tL3L%

0.1352%

o.Io20%

0.1736%

o.L427%

o.oL97%

0.0860%

0.0303%

o.3264%

0.2337%

0.3800%

0.220L%

o.1827%

o.1503%

o.1427%

o.2967%

o.2077%

o.2190%

o1064%

o.0457%

o.0322%

o.0480%

o.1093%

o.ros6%

o.o47L%

o.tL50%

o.5233%

o.I5L5%

o.r076%

o.1787%

o.1386%

o.2L69%

o.0594%

o.o756%

o.0s19%

o.0936%

o.o728%

o1sos%o.L764%

o.L339%

o.2r9L%

O.L778o/o

0.o2s3%

0,LogL%

0.0386%

0.4299%

o.3059%

0.4980%

o,2852%

o.2437%

o.1977%

o.t87t%o.3875%

o.2700%

O.2849o/o

70 hrWíndowo.L327%

o.0574%

o.0404%

o.0622%

o.L3680/o

o.r3L7%

o.0594%

o.r44L%

o.6469%

o.t903%

o.r3s8%o.22t4%

o.I756%

O.26600/o

o.o744%

0.0938%

o.0648%

o.1178%

O.O9t5o/o

o.7890%

o.2229%

o.1738%

o.2763%

o.22s3%

o.0378%

0.L379%

o.oso4%

o.5351%

0.3792%

o.6L17%

o.3520%

o.307L%

o.249L%

o.2313%

o.47s5%

o3290%o34s8%

lssue No 330361 07



^ Powerilüet

Company Procedure

Tøble L1 - OtogoNet Jo¡nt Venture Rolling Outoge Feeder Names

Feeder Príority AUFLS Count of ICP 4 hrWindow

Percent Energy Søved

6hr thrWíndow Window

PAL 3

NBL 4

PAL 7

LAW 2

3

3

3

3

2

2

2

2

3L1

309

273

243

o.0863%

O.102Lo/o

O.I35Oo/o

o.0s62%

O.L271o/o

o.L38s%

o.202r%

o.0828%

o.L672%

o.L777%

0.2683%

0.Lo75%

7O hrWindowo.2093%

o.2259%

o3329%o.1329%

lssue No 330361 07


Security of Supply - Participant OutagePlanNMPR-245

:̂! Powerl(et

Gompany Procedure

7.5. Appendix 5 - Electricity Southland Limited Rolling Outage Feeder Names

Table 1.2 - Electricity Southland Limited Rolling Outoge Feeder Names

Feeder Prioríty AUFLS Group Count of ICP 4 hrWÍndow

o.03L9%

o.oo30%

o.0208%

O.O74to/o

o.o476%

0.0046%

0.030s%

o.L066%

O.063Lo/o

O.OO6Lo/o

O.O394o/o

0.L380%

70 hrWÍndow0.0774%

0.0073%

o.0468%

o.L7t9%


6hr thrWÍndow Wíndow

RMK 7

RMK 72

RMK 8

RMK 17

5

5

4

3

L23

25

t28s99

lssue No 330361 07


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