New Zealand Gazette – 1997 – No. 101

Page 2383

✨ Electricity Reliability Statistics

22 AUGUST NEW ZEALAND GAZETTE 2383

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 6. of the first schedule

The SAIDI for the total number of interruptions within each interruption class

	Year ended	Year ended	Year ended
	31-Mar-95	31-Mar-96	31-Mar-97
Class A - Planned interruptions caused by Trans Power	0.00	0.00	0.10
Class B - Planned interruptions by Westpower	256.11	287.20	158.90
Class C - Unplanned interruptions by Westpower	243.80	384.06	240.20
Class D - Unplanned interruptions caused by Trans Power	137.46	135.74	36.70
Class E - Unplanned interruptions caused by ECNZ generation	0.00	0.00	0.00
Class F - Unplanned interruptions caused by Westpower generation	9.33	28.43	0.00
Class G - Other interruptions (Planned Westpower generation)	0.00	0.00	0.00

Part IV 7. of the first schedule

The SAIFI for the total number of interruptions

Year ended 31-Mar-95	Year ended 31-Mar-96	Year ended 31-Mar-97
6.37	5.60	3.58

Part IV 8. of the first schedule

The SAIFI for the total number of interruptions within each interruption class

	Year ended	Year ended	Year ended
	31-Mar-95	31-Mar-96	31-Mar-97
Class A - Planned interruptions caused by Trans Power	0.00	0.00	0.00
Class B - Planned interruptions by Westpower	1.10	1.06	0.68
Class C - Unplanned interruptions by Westpower	2.07	2.39	1.84
Class D - Unplanned interruptions caused by Trans Power	3.07	1.96	0.86
Class E - Unplanned interruptions caused by ECNZ generation	0.00	0.00	0.00
Class F - Unplanned interruptions caused by Westpower generation	0.13	0.19	0.00
Class G - Other interruptions (Planned Westpower generation)	0.00	0.00	0.00

Part IV 9. of the first schedule

The CAIDI for the total number of interruptions

Year ended 31-Mar-95	Year ended 31-Mar-96	Year ended 31-Mar-97
101.6	149.28	129.09

Part IV 10. of the first schedule

The CAIDI for the total number of interruptions within each interruption class

| | Year ended 31-Mar-95 | Year ended 31-Mar-96 | Year ended 31-Mar-97 |
| --- | --- | --- |
| Class A - Planned interruptions caused by Trans Power | ... | ... | 40.00 |
| Class B - Planned interruptions by Westpower | 233.60 | 272.08 | 235.27 |
| Class C - Unplanned interruptions by Westpower | 117.60 | 160.59 | 130.35 |
| Class D - Unplanned interruptions caused by Trans Power | 44.81 | 69.28 | 42.67 |
| Class E - Unplanned interruptions caused by ECNZ generation | ... | ... | ... |
| Class F - Unplanned interruptions caused by Westpower generation | 72.94 | 149.85 | 0.00 |
| Class G - Other interruptions (Planned Westpower generation) | ... | ... | ... |

The calculations above include an estimation of 20 faults from DDO fuses replaced after lightning storms.

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VUW Te Waharoa — NZ Gazette 1997, No 101

NZLII — NZ Gazette 1997, No 101

The Executive Wing of Parliament (depicted) is universally known as The Beehive. It was completed in 1977 and remains the primary office for the elected Government of the day.

✨ LLM interpretation of page content

🏭 Westpower Limited System Reliability (continued from previous page)

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

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