New Zealand Gazette – 1996 – No. 110

Page 2816

✨ Electricity Reliability Performance Measures

NEW ZEALAND GAZETTE

No. 110

DISCLOSURE OF RELIABILITY PERFORMANCE MEASURES

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

	1995	1996
1. Total number of interruptions
(a) Planned interruptions by Trans Power	0	0
(b) Planned interruptions by Northpower	524	477
(c) Unplanned interruptions originating within Northpower system	298	277
(d) Unplanned interruptions originating within Trans Power system	5	3
(e) Unplanned interruptions originating within ECNZ system	0	1
(f) Unplanned interruptions originating within other generator’s systems	0	0
(g) Unplanned interruptions originating from other than above	0	0

Total number of faults per 100 circuit kilometres of prescribed voltage electric line | 9.49 | 9.31 |
Total number of faults per 100 circuit kilometres of underground prescribed voltage line and per different nominal line voltages:-
- 11 kV underground | 4.89 | 4.15 |
- 33 kV underground | Nil | 9.37 |
Total number of faults per 100 circuit kilometres of overhead prescribed voltage lines and per different nominal line voltages:-
- 11 kV overhead | 8.49 | 8.80 |
- 33 kV overhead | 6.20 | 6.08 |
The SAIDI for the total of interruptions | 238.0 mins | 248.6 mins |
The SAIDI for the total number of interruptions within each interruption class:-
(a) Planned interruptions by Trans Power | 0 | 0 |
(b) Planned interruptions by Northpower | 74.29 mins | 70.77 mins |
(c) Unplanned interruptions originating within Northpower system | 137.32 mins | 156.75 mins |
(d) Unplanned interruptions originating within Trans Power system | 26.39 mins | 18.06 mins |
The SAIFI for the total number of interruptions | 5.8 interruptions | 5.2 interruptions |
The SAIFI for the total number of interruptions within each interruption class:-
(a) Planned interruptions by Trans Power | 0 | 0 |
(b) Planned interruptions by Northpower | 0.88 interruptions | 0.69 interruptions |
(c) Unplanned interruptions originating within Northpower system | 3.83 interruptions | 3.61 interruptions |
(d) Unplanned interruptions originating within Trans Power system | 0.84 interruptions | 0.68 interruptions |
The CAIDI for the total of all interruptions | 41.10 mins | 48.31 mins |
The CAIDI for the total number of interruptions within each interruption class:-
(a) Planned interruptions by Trans Power | 0 | 0 |
(b) Planned interruptions by Northpower | 84.35 mins | 102.33 mins |
(c) Unplanned interruptions originating within Northpower system | 35.90 mins | 43.36 mins |
(d) Unplanned interruptions originating within Trans Power system | 26.39 mins | 26.68 mins |

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VUW Te Waharoa — NZ Gazette 1996, No 110

NZLII — NZ Gazette 1996, No 110

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✨ LLM interpretation of page content

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

Domain🏭 Trade, Customs & Industry
KeywordsElectricity, Reliability, Performance Measures, Interruptions, Faults, SAIDI, SAIFI, CAIDI, Northpower, Trans Power, ECNZ

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