New Zealand Gazette – 1998 – No. 159

Page 3832

✨ Electricity Reliability Statistics

NEW ZEALAND GAZETTE

No. 159

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	Year ended
	31-Mar-98	31-Mar-97	31-Mar-96	31-Mar-95
Class A - Planned interruptions caused by Trans Power	13.13	0.10	0.00	0.00
Class B - Planned interruptions by Westpower	211.48	158.90	287.20	256.11
Class C - Unplanned interruptions by Westpower	133.29	240.20	384.06	243.80
Class D - Unplanned interruptions caused by Trans Power	25.19	36.70	135.74	137.46
Class E - Unplanned interruptions caused by ECNZ generation	0.00	0.00	0.00	0.00
Class F - Unplanned interruptions caused by Westpower generation	1.07	0.00	28.43	9.33
Class G - Other interruptions (Planned Westpower generation)	0.07	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-98	Year ended 31-Mar-97	Year ended 31-Mar-96	Year ended 31-Mar-95
	4.05	3.38	5.60	6.37

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	Year ended
	31-Mar-98	31-Mar-97	31-Mar-96	31-Mar-95
Class A - Planned interruptions caused by Trans Power	0.10	0.00	0.00	0.00
Class B - Planned interruptions by Westpower	0.96	0.68	1.06	1.10
Class C - Unplanned interruptions by Westpower	1.99	1.84	2.39	2.07
Class D - Unplanned interruptions caused by Trans Power	0.97	0.86	1.96	3.07
Class E - Unplanned interruptions caused by ECNZ generation	0.00	0.00	0.00	0.00
Class F - Unplanned interruptions caused by Westpower generation	0.03	0.00	0.19	0.13
Class G - Other interruptions (Planned Westpower generation)	0.00	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-98	Year ended 31-Mar-97	Year ended 31-Mar-96	Year ended 31-Mar-95
	94.87	129.09	149.28	101.6

Part IV 10. of the first schedule

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

	Year ended	Year ended	Year ended	Year ended
	31-Mar-98	31-Mar-97	31-Mar-96	31-Mar-95
Class A - Planned interruptions caused by Trans Power	130.25	40.00	—	—
Class B - Planned interruptions by Westpower	220.82	235.27	272.08	233.60
Class C - Unplanned interruptions by Westpower	66.85	130.35	160.59	117.60
Class D - Unplanned interruptions caused by Trans Power	26.03	42.67	69.28	44.81
Class E - Unplanned interruptions caused by ECNZ generation	—	—	—	—
Class F - Unplanned interruptions caused by Westpower generation	35.67	0.00	149.85	72.94
Class G - Other interruptions (Planned Westpower generation)	—	—	—	—

The calculations above include an estimation of 40 DDO fuses replaced during faults after lightning storms

PUBLISHED BY AUTHORITY OF DEPARTMENT OF INTERNAL AFFAIRS:
GP LEGISLATION SERVICES. WELLINGTON, NEW ZEALAND—1998
DEPARTMENT OF INTERNAL AFFAIRS
TE TARI TAWHENUA
ISSN 0111-5650
Price $3.60 (inc. G.S.T.)

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VUW Te Waharoa — NZ Gazette 1998, No 159

NZLII — NZ Gazette 1998, No 159

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, Performance Measures, Electricity, Statistics, Westpower Limited

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