New Zealand Gazette – 2006 – No. 157

Page 4596

✨ Electricity Reliability Performance Measures

Requirement 21 (Schedule 1, Part 5)

Reliability Performance Measures

Year ended 31 March 2006

Interruptions

	2006	2005	2004	2003
Total interruptions	869	983	1,012	583
a) Planned interruptions (Class B)	432	463	490	324
b) Unplanned interruptions (Class C)	437	520	522	259

Unplanned interruptions not restored within:
| | | | | | | |
| a) 3 Hours (%) | | | 25.23% | 26.00% | 43.00% | 29.00%|
| b) 24 Hours (%) | | | 0.46% | 0.96% | 1.72% | 0.39% |

Faults

	2007/10 Target	2007 Target	2006	2005	2004	2003
Faults/100km
a) Total No. of faults	9.80	9.80	8.92	9.38	10.67	8.96
b) Next year targets
c) Next 5 year average target
d) i) 33kV line voltage
a) Total no. of faults			9.82	5.63	5.17	3.58
b) Next year target
c) Next 5 year target
ii) 11kV line voltage
a) Total no. of faults			8.84	9.71	11.20	8.89
b) Next year target
c) Next 5 year target

Faults/100km of underground line
| | | | 2006 | 2005 | 2004 | 2003 |
|------------------------|----------------|-------------|---------|--------|---------|--------|
| a) Total | 7.30 | 7.30 | 6.60 | 8.82 | 7.22 | 10.06 |
| b) 33kV | | | 16.81 | - | *6.60 | - |
| c) 11kV | | | 6.61 | 9.28 | 7.58 | 10.06 |

Faults/100km of overhead line
| | | | 2006 | 2005 | 2004 | 2003 |
|------------------------|----------------|-------------|---------|--------|---------|--------|
| a) Total | 10.00 | 10.00 | 9.10 | 9.44 | 11.18 | 12.52 |
| b) 33kV | | | 9.22 | 6.08 | 5.66 | 3.20 |
| c) 11kV* | | | 9.20 | 9.78 | 11.81 | 9.31 |

*Note: 2 substation equipment faults are now classified as underground 33kV faults.

Reliability Measures

	2007/10 Target	2007 Target	2006	2005	2004	2003
Total SAIDI (Classes B & C)	153	153	134	156	202	97
SAIDI
a) Planned interruptions (Class B)	38	38	28	25	30	25
b) Unplanned interruptions (Class C)	115	115	106	130	171	72
c) Unplanned interruptions Transpower (Class D)			0.03	5	-	-

| Total SAIFI (Classes B & C) | 2.40 | 2.40 | 2.83 | 3.21 | 2.38 | 2.02 |
| SAIFI | | | | | | |
| a) Planned Interruptions (Class B) | 0.20 | 0.20 | 0.18 | 0.16 | 0.21 | 0.22 |
| b) Unplanned interruptions (Class C)| 2.20 | 2.20 | 2.65 | 3.05 | 2.17 | 1.80 |
| c) Unplanned interruptions Transpower (Class D) | | | 0.01 | 0.20 | - | - |

| Total CAIDI (Classes B & C) | 243 | 243 | 47 | 48 | 85 | 67 |
| CAIDI | | | | | | |
| a) Planned interruptions (Class B) | 191 | 191 | 160 | 154 | 141 | 172 |
| b) Unplanned interruptions (Class C)| 52 | 52 | 40 | 43 | 79 | 56 |
| c) Unplanned interruptions Transpower (Class D) | | | 3 | 22 | - | - |

VUW Te Waharoa — NZ Gazette 2006, No 157

Gazette.govt.nz — NZ Gazette 2006, No 157

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

🏭 Financial and Efficiency Performance Measures for Unison Networks Limited (continued from previous page)

Domain🏭 Trade, Customs & Industry
KeywordsFinancial measures, Efficiency measures, Return on funds, Return on equity, Return on investment, Direct line cost, Indirect line cost, Electricity information disclosure, Unison Networks Limited

🏭 Reliability Performance Measures for Unison Networks Limited

Domain🏭 Trade, Customs & Industry
KeywordsElectricity reliability, Interruptions, Faults, SAIDI, SAIFI, CAIDI, Unison Networks Limited

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