Security of Supply - Participant OutagePlanNMPR.245
^ Powerllet
Gompany Procedure
a
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
a
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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
lssue No 330361 07
22May 2Q17Page 1 of 24Chief Operating Officer
Security of Supply - Participant OutagePlanNMPR.245
,^Powerllet
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.
lssue No 330361 07
22 May 2017Page 2 of 24Chief Operating Officer
Security of Supply - Participant OutagePlanNMPR.245
,^Powerllet
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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22May 2017Page 3 oÍ 24Chief Operating Officer
Security of Supply - Participant OutagePlanNMPR.245
^ Poweriúet
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
lssue No 330361 07
22 May 2017Page 4 of 24Chief Operating Officer
Security of Supply - Participant OutagePlanNMPR.245
^ 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.
lssue No 330361 07
22May 2017Page 5 of 24Chief Operating Officer
Security of Supply - Participant OutagePlanNMPR.245
Powerltlet
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.
lssue No 330361 07
22May 2Q17Page 6 of 24Chief Operating Officer
Security of Supply - Participant OutagePlanNMPR.245
^ PowerlleÉ'.:
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
lssue No 330361 07
22 May 2017PageT ol24Chief Operating Officer
Security of Supply - Participant OutagePlanNMPR.245
^ Powerllet
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.
lssue No 330361 07
22May 2017Page I of 24Chief Operating Officer
Security of Supply - Participant OutagePlanNMPR.245
^ Powerltlet
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.
lssue No 330361 07
22May 2Q17Page 9 of 24Chief Operating Officer
Security of Supply - Participant OutagePlanNMPR.245
^ Powerllet
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
lssue No 330361 07
22May 2017Page10of24Chief Operating Officer
Security of Supply - Participant OutagePlanNMPR.245
,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.
a
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lssue No 330361 07
22May 2017Page 1 1 of24Chief Operating Officer
Security of Supply - Participant OutagePlanNMPR.245
r1Ëì... Powerllet
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
Customer GroupPriority
MaximumDuration
Days perweek
Expected Energy Savings
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%
lssue No 330361 07
22 May 2017Page l2of24Chief Operating Officer
Security of Supply - Participant OutagePlanNMPR.245
-â,/ Poweriúet
Gompany Procedure
Customer GroupPriority
MaximumDuration
Days perweek
Expected Energy Savings
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
Customer GroupPriority
MaximumDuration
Days perweek
Expected Energy Savings
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.
lssue No 330361 07
22May 2Q17Page 13ot24
Customer GroupPriority
MaximumDuratíon
Days perweek
Expected Energy Savings
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
Security of Supply - Participant OutagePlanNMPR.245
"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
lssue No 330361 07
22May 2017Page 14 of 24Chief Operating Officer
Security of Supply - Participant OutagePlanNMPR.245
Powerllet
Company Procedure
7.1. Appendix I - Outage Log
Date Controller:
FeederNo
Load(amps)
No. ofCustomers
Timeoff
TimeOn
Duration Notes
lssue No 330361 07
22 May 2017Page 15 of24Chief Operating Officer
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
lssue No 330361 07
22 May 2017Page 16 of 24Chief Operating Officer
Security of Supply - Participant OutagePlanNMPR.245
.Ã'l Powerlúet
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 2017Page 17 of24Chief Operating Officer
Security of Supply - Participant OutagePlanNMPR.245
./^. 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 2017Page 18of24Chief Operating Officer
Security of Supply - Participant OutagePlanNMPR.245
:^PowerHet
Gompany Procedure
Toble L0 - The Power Compony L¡m¡ted Rolling Outage Feeder Nomes
Feeder Priority AUFLS
Group
Percent Energy Soved
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 2017Page 19of24Chief Operating Officer
Security of Supply - Participant OutagePlanNMPR.245
.^'i:, Powerltlet
Company Procedure
Table 10 - The Power Compony Limited Rolling Outoge Feeder Nomes
Feeder Príority AUFLS
Percent Energy Saved
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
Security of Supply - Participant OutagePlanNMPR.245
; 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%
Percent Energy Soved
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
22May 2017Page 21 of 24Chief Operating Officer
Security of Supply - Participant OutagePlanNMPR.245
*Ê\\; Powerltlet
Company Procedure
Tøble 11 - OtagoNet Jo¡nt Venture Rolling Outage Feeder Names
Feeder Priority AUFLS Count ol ICP 4 hrWindow
Percent Energy Soved
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
22 May 2017Page 22 of 24Chief Operating Officer
Security of Supply - Participant OutagePlanNMPR.245
^ 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
22May 2017Page 23 of 24Chief Operating Officer
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%
Percent Energy Saved
6hr thrWÍndow Wíndow
RMK 7
RMK 72
RMK 8
RMK 17
5
5
4
3
L23
25
t28s99
lssue No 330361 07
22 May 2017Page 24 of 24Chief Operating Officer