New Zealand Gazette – 1998 – No. 159

Page 3831

✨ Energy Reliability Statistics

25 SEPTEMBER NEW ZEALAND GAZETTE 3831

WESTPOWER LIMITED

SYSTEM RELIABILITY

Disclosure by line owners of reliability performance measures
as required by Regulation 16 of the Electricity (Information Disclosure) Regulations 1994

Part IV 1. of the first schedule
Total number of interruptions,
together with a breakdown of that total according
to interruption class

	Year ended 31-Mar-98	Year ended 31-Mar-97	Year ended 31-Mar-96	Year ended 31-Mar-95
Class A - Planned interruptions caused by Trans Power	3	1	0	0
Class B - Planned interruptions by Westpower	126	88	71	98
Class C - Unplanned interruptions by Westpower	91	89	135	220
Class D - Unplanned interruptions caused by Trans Power	4	5	6	10
Class E - Unplanned interruptions caused by ECNZ generation	0	0	0	0
Class F - Unplanned interruptions caused by Westpower generation	1	0	10	8
Class G - Other interruptions (Planned Westpower generation)	1	0	0	0
Total interruptions	226	183	222	336

Part IV 2. of the first schedule
The total number of faults per 100 circuit kilometres of prescribed voltage electric line
(Voltage equal to or greater than 3.3 kilovolts)

	5.67	10.71	8.50	12.50
Total faults per 100 km	5.67	10.71	8.50	12.50

Part IV 3. of the first schedule
Total number of faults per 100 kilometres of underground prescribed voltage electric line

Nominal Line Voltage
66kv / 50kv	0.00	0.00	0.00
33kV	0.00	0.00	0.00
11kV	3.53	18.20	17.70
Total faults per 100 km	3.49	18.00	17.50

Part IV 4. of the first schedule
Total number of faults per 100 kilometres of overhead prescribed voltage electric line


66kv / 50kv	12.67	21.04	25.21	16.83
33kV	6.42	3.17	7.09	8.37
11kV	5.35	11.39	8.21	12.65
Total faults per 100 km	5.67	10.70	8.34	12.42

Part IV 5. of the first schedule


The SAIDI for the total number of interruptions	384.22	435.90	835.42	646.7

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VUW Te Waharoa — NZ Gazette 1998, No 159

NZLII — NZ Gazette 1998, No 159

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✨ LLM interpretation of page content

🏭 Westpower Limited System Reliability (continued from previous page)

Domain🏭 Trade, Customs & Industry
KeywordsReliability, Performance Measures, Electricity, Statistics, Westpower Limited

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