β¨ Reliability Performance Measures
NEW ZEALAND GAZETTE
No. 139
DISCLOSURE OF RELIABILITY PERFORMANCE MEASURES PURSUANT TO REGULATION 16 OF THE ELECTRICITY (INFORMATION DISCLOSURE) REGULATIONS 1994
| 1995 | 1996 | 1997 | 1998 | |
|---|---|---|---|---|
| 1. Total number of interruptions: | ||||
| (a) Planned interruptions by Trans Power | 827 | 758 | 839 | 986 |
| (b) Planned interruptions by Northpower | 0 | 0 | 1 | 0 |
| (c) Unplanned interruptions originating within Northpower system | 524 | 477 | 460 | 628 |
| (d) Unplanned interruptions originating within Trans Power system | 298 | 277 | 370 | 358 |
| (e) Unplanned interruptions originating within ECNZ system | 5 | 3 | 8 | 0 |
| (f) Unplanned interruptions originating within other generator's systems | 0 | 1 | 0 | 0 |
| (g) Unplanned interruptions originating from other than above | 0 | 0 | 0 | 0 |
| 2. Total number of faults per 100 circuit kilometres of prescribed voltage electric line | 9.49 | 9.31 | 10.72 | 10.81 |
| 3. Total number of faults per 100 circuit kilometres of underground prescribed voltage line and per different nominal line voltages: | | | | |
| 11 kV underground | 4.08 | 5.09 | 1.61 | 4.84 |
| 33 kV underground | 4.89 | 4.15 | 0 | 6.12 |
| | Nil | 9.37 | 2.00 | 0 |
| 4. Total number of faults per 100 circuit kilometres of overhead prescribed voltage lines and per different nominal line voltages: | | | | |
| 11 kV overhead | 8.38 | 8.64 | 11.67 | 10.81 |
| 33 kV overhead | 8.49 | 8.80 | 11.78 | 10.79 |
| | 6.20 | 6.08 | 10.00 | 11.56 |
| 5. The SAIDI for the total of interruptions | 238.0 mins | 248.6 mins | 379.43 mins | 240.51 mins|
| 6. The SAIDI for the total number of interruptions within each interruption class: | | | | |
| (a) Planned interruptions by Trans Power | 74.29 mins | 70.77 mins | 19.28 mins | 0 mins |
| (b) Planned interruptions by Northpower | 0 | 0 | 81.95 mins | 115.36 mins|
| (c) Unplanned interruptions originating within Northpower system | 137.32 mins| 156.75 mins| 205.95 mins | 125.16 mins|
| (d) Unplanned interruptions originating within Trans Power system | 26.39 mins | 18.06 mins | 71.67 mins | 0 mins |
| 7. The SAIFI for the total number of interruptions | 5.8 interruptions | 5.2 interruptions | 7.66 interruptions | 4.031 interruptions |
| 8. The SAIFI for the total number of interruptions within each interruption class: | | | | |
| (a) Planned interruptions by Trans Power | 0.88 interruptions | 0 interruptions | 0.065 interruptions | 0 interruptions |
| (b) Planned interruptions by Northpower | 0 | 0.69 interruptions | 0.71 interruptions | 0.969 interruptions |
| (c) Unplanned interruptions originating within Northpower system | 3.83 interruptions | 3.61 interruptions | 4.576 interruptions | 3.062 interruptions |
| (d) Unplanned interruptions originating within Trans Power system | 0.84 interruptions | 0.68 interruptions | 2.304 interruptions | 0 interruptions |
| 9. The CAIDI for the total of all interruptions | 41.10 mins | 48.31 mins | 49.6 mins | 59.7 mins |
| 10. The CAIDI for the total number of interruptions within each interruption class: | | | | |
| (a) Planned interruptions by Trans Power | 84.35 mins | 0 | 300 mins | 0 mins |
| (b) Planned interruptions by Northpower | 0 | 102.33 mins| 115.7 mins | 119.0 mins |
| (c) Unplanned interruptions originating within Northpower system | 35.90 mins | 43.36 mins | 45.0 mins | 40.9 mins |
| (d) Unplanned interruptions originating within Trans Power system | 26.39 mins | 26.68 mins | 31.1 mins | 0 mins |
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VUW Te Waharoa —
NZ Gazette 1998, No 139
NZLII —
NZ Gazette 1998, No 139
β¨ LLM interpretation of page content
π
Disclosure of Reliability Performance Measures pursuant to Regulation 16 of the Electricity (Information Disclosure) Regulations 1994
(continued from previous page)
π Trade, Customs & IndustryReliability Performance, Interruptions, Faults, SAIDI, SAIFI, CAIDI, Electricity, Regulation 16