β¨ Reliability Performance Measures
Requirement 21
Disclosure of reliability performance measures
1 Total number of interruptions:
| Network or generation owner | Interruption class | Classification of interruptions | 2007 | 2006 | 2005 | 2004 |
|---|---|---|---|---|---|---|
| Orion | B | Planned shutdowns | 319 | 288 | 316 | 241 |
| Orion | C | Unplanned cuts | 520 | 499 | 462 | 403 |
| Transpower | A | Planned shutdowns | 1 | - | 2 | 4 |
| Transpower | D | Unplanned cuts | 14 | 5 | 5 | 8 |
Total interruptions: | 854 | 792 | 785 | 656 |
Interruption classes E, F and G do not apply to the company and consequently results are all zero.
2 & 3 Interruption targets:
| Network or generation owner | Interruption class | Classification of interruptions | 2008 | Average 2008 - 2012 |
|---|---|---|---|---|
| Orion | B | Planned shutdowns | 385 | 385 |
| Orion | C | Unplanned cuts | 555 | 555 |
4 Proportion of 2006's Class C interruptions not restored within:
(a) 3 hours 38%
(b) 24 hours 11%
5(a) Faults per 100 circuit-km of electric line:
| Voltage | 2007 | 2006 | 2005 | 2004 |
|---|---|---|---|---|
| 66kV | 0.5 | 2.2 | 1.2 | 0.0 |
| 33kV | 3.2 | 2.9 | 3.8 | 2.0 |
| 11kV | 9.4 | 9.2 | 8.5 | 7.7 |
| All | 8.7 | 8.6 | 8.0 | 7.1 |
(b) & (c) Target number of faults per 100 circuit-km of electric line:
| Voltage | 2008 | Average 2008 - 2012 |
|---|---|---|
| 66kV | 2 | 2 |
| 33kV | 4 | 4 |
| 11kV | 12 | 12 |
| All | 11 | 11 |
Next Page →
Online Sources for this page:
VUW Te Waharoa —
NZ Gazette 2008, No 25
Gazette.govt.nz —
NZ Gazette 2008, No 25
β¨ LLM interpretation of page content
π°
Disclosure of reliability performance measures
(continued from previous page)
π° Finance & RevenueReliability performance, Interruptions, Planned shutdowns, Unplanned cuts, Faults, Electric lines, Orion, Transpower