New Zealand Gazette – 1995 – No. 139

Page 4562

✨ Reliability Performance Measures

4562 NEW ZEALAND GAZETTE No. 139

Regulation 17 and Part V of the First Schedule

Reliability Performance Measures

		12 Months 30 June 1995	12 Months 30 June 1994
1	Total number of unplanned interruptions Resulting from 118 loss of supply incidents in 1994/95	182	224
2	Electricity customer interruptions Comprising 4.4 system minutes due to planned outages and 15.1 system minutes due to unplanned outages in 1994/95	19.5 system minutes	15.1 system minutes
3	Underlying electricity customer interruptions Underlying interruptions are those interruptions less than 1 system minute duration. The total comprises 2.9 system minutes for planned outages and 11.2 system minutes for unplanned interruptions.	14.1 system minutes	10.3 system minutes
4	Average supply reliability Measured by the energy supplied divided by the sum of the energy supplied and not supplied.	99.9942%	99.9956%
5	Uneconomic generation due to planned and unplanned transmission system unavailability Uneconomic generation relates to the amount of electricity generated from any source other than the most economic source.	0.68%	0.81%
6	Uneconomic generation due to HVDC system unavailability	0.60%	0.69%
7	Uneconomic generation due to unplanned transmission system unavailability	0.51%	0.07%

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VUW Te Waharoa — NZ Gazette 1995, No 139

NZLII — NZ Gazette 1995, No 139

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✨ LLM interpretation of page content

🏗️ Energy Delivery Efficiency Performance Measures and Statistics (continued from previous page)

Domain🏗️ Infrastructure & Public Works
KeywordsEnergy Delivery, Efficiency Measures, Transmission Losses, Capacity Utilisation, System Length, Circuit Length, Voltage Breakdown, Reliability Performance, Unplanned Interruptions, Electricity Customer Interruptions, Supply Reliability, Uneconomic Generation, HVDC System

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