Electricity Reliability Performance




18 AUGUST NEW ZEALAND GAZETTE 2319

DISCLOSURE OF RELIABILITY PERFORMANCE MEASURES

PURSUANT TO REGULATION 16 OF THE ELECTRICITY (INFORMATION DISCLOSURE) REGULATIONS 1994

  1. Total number of interruptions 827

    (a) Planned interruptions by Trans Power 0
    (b) Planned interruptions by Northpower 524
    (c) Unplanned interruptions originating within Northpower system 298
    (d) Unplanned interruption originating with Trans Power system 5
    (e) Unplanned interruptions originating within ECNZ system 0
    (f) Unplanned interruptions originating within other generator’s systems 0
    (g) Unplanned interruptions originating from other than above 0

  2. Total number of faults per 100 circuit kilometres of prescribed voltage electric line 8.29

  3. Total number of faults per 100 circuit kilometres of underground prescribed voltage line and per different nominal line voltages:-
    11 kV underground 4.89
    33 kV underground Nil
    Total 4.08

  4. Total number of faults per 100 circuit kilometres of overhead prescribed voltage lines and per different nominal line voltages:-
    11 kV overhead 8.38
    33 kV overhead 8.46
    Total 8.38

  5. The SAIDI for the total of interruptions 238.0 minutes

  6. The SAIDI for the total number of interruptions within each interruption class:-
    (a) Planned interruptions by Trans Power 0
    (b) Planned interruptions by Northpower 74.29 minutes
    (c) Unplanned interruptions originating within Northpower system 137.32 minutes
    (d) Unplanned interruptions originating within Trans Power system 26.39 minutes

  7. The SAIFI for the total number of interruptions 5.8 interruptions

  8. The SAIFI for the total number of interruptions within each interruption class:-
    (a) Planned interruptions by Trans Power 0
    (b) Planned interruptions by Northpower 0.88 interruptions
    (c) Unplanned interruptions originating within Northpower’s system 3.83 interruptions
    (d) Unplanned interruptions originating within Trans Power system 0.84 interruptions

  9. The CAIDI for the total of all interruptions 41.10 minutes

  10. The CAIDI for the total number of interruptions within each interruption class:-
    (a) Planned interruptions by Trans Power 0
    (b) Planned interruptions by Northpower 84.35 minutes
    (c) Unplanned interruptions originating within Northpower system 35.90 minutes
    (d) Unplanned interruptions originating within Trans Power system 26.39 minutes



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🏭 Disclosure of Reliability Performance Measures (continued from previous page)

🏭 Trade, Customs & Industry
Electricity, Reliability, Interruptions, Faults, SAIDI, SAIFI, CAIDI, Northpower, Trans Power, ECNZ