New Zealand Gazette – 1998 – No. 106

Page 2588

✨ Electricity Reliability Performance



NEW ZEALAND GAZETTE

No. 106

WAIPA POWER LIMITED - LINE BUSINESS

Disclosure of reliability performance measures under regulation 16 of the Electricity (Information Disclosure) Regulations 1994

1998 1997 1996 1995
1 Total number of interruptions
Class A - Planned - by Transpower 0 0 0 0
Class B - Planned - by Line Owners 249 234 283 309
Class C - Unplanned - by Line Owners 117 156 138 119
Class D - Unplanned - by Transpower 1 2 4 2
Class E - Unplanned - by ECNZ 0 0 0 0
Class F - Unplanned - by other generation 0 0 0 0
Class G - Any other loss of supply 0 0 0 0
Total 367 392 425 430

2 The total number of faults per 100 circuit kilometres of prescribed voltage electric line

| 11kV | 8.77 | 11.73 | 10.38 | 8.95 |

3 The total number of faults per 100 circuit kilometres of underground prescribed voltage electric line

| 11kV | 0.00 | 0.00 | 2.56 | 0.00 |

4 The total number of faults per 100 circuit kilometres of overhead prescribed voltage electric line

| 11kV | 9.05 | 12.08 | 10.61 | 9.22 |

5 The SAIDI for the total number of interruptions | 255.21 | 353.09 | 388.34 | 411.53 |

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

| Class A - Planned - by Transpower | 0.00 | 0.00 | 0.00 | 0.00 |
| Class B - Planned - by Line Owners | 99.97 | 96.26 | 182.90 | 104.97 |
| Class C - Unplanned - by Line Owners | 153.62 | 231.76 | 170.95 | 257.10 |
| Class D - Unplanned - by Transpower | 1.62 | 25.07 | 34.49 | 49.46 |
| Class E - Unplanned - by ECNZ | 0.00 | 0.00 | 0.00 | 0.00 |
| Class F - Unplanned - by other generation | 0.00 | 0.00 | 0.00 | 0.00 |
| Class G - Any other loss of supply | 0.00 | 0.00 | 0.00 | 0.00 |

7 The SAIFI for the total number of interruptions | 3.39 | 5.78 | 5.06 | 5.66 |

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

| Class A - Planned - by Transpower | 0.00 | 0.00 | 0.00 | 0.00 |
| Class B - Planned - by Line Owners | 0.61 | 0.54 | 0.97 | 0.59 |
| Class C - Unplanned - by Line Owners | 2.24 | 4.48 | 3.30 | 3.97 |
| Class D - Unplanned - by Transpower | 0.54 | 0.76 | 0.79 | 1.10 |
| Class E - Unplanned - by ECNZ | 0.00 | 0.00 | 0.00 | 0.00 |
| Class F - Unplanned - by other generation | 0.00 | 0.00 | 0.00 | 0.00 |
| Class G - Any other loss of supply | 0.00 | 0.00 | 0.00 | 0.00 |

9 The CAIDI for the total number of interruptions | 75 | 61 | 77 | 73 |

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

| Class A - Planned - by Transpower | 0 | 0 | 0 | 0 |
| Class B - Planned - by Line Owners | 163 | 180 | 189 | 177 |
| Class C - Unplanned - by Line Owners | 69 | 52 | 52 | 65 |
| Class D - Unplanned - by Transpower | 3 | 33 | 44 | 45 |
| Class E - Unplanned - by ECNZ | 0 | 0 | 0 | 0 |
| Class F - Unplanned - by other generation | 0 | 0 | 0 | 0 |
| Class G - Any other loss of supply | 0 | 0 | 0 | 0 |



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🏭 Performance Measures of Waipa Power Limited (continued from previous page)

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Financial Performance, Efficiency Measures, Energy Delivery, Statistics, Waipa Power Limited