β¨ Energy Reliability Statistics
Requirement 21
Disclosure of reliability performance measures
1 Total number of interruptions:
| Network or generation owner | Interruption class | Classification of interruptions | 2005 | 2004 | 2003 | 2002 |
|---|---|---|---|---|---|---|
| Orion | B | Planned shutdowns | 316 | 241 | 356 | 220 |
| Orion | C | Unplanned cuts | 462 | 403 | 611 | 404 |
| Transpower | A | Planned shutdowns | 2 | 4 | 0 | 0 |
| Transpower | D | Unplanned cuts | 5 | 8 | 4 | 2 |
Total: | 785 | 656 | 971 | 626 |
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 | 2006 | Average 2006 - 2010 |
|---|---|---|---|---|
| Orion | B | Planned shutdowns | 385 | 385 |
| Orion | C | Unplanned cuts | 555 | 555 |
4 Proportion of Class C interruptions not restored within:
(a) 3 hours
24.9%
(b) 24 hours
0.2%
5(a) Faults per 100 circuit-km of electric line:
| Voltage | 2005 | 2004 | 2003 | 2002 |
|---|---|---|---|---|
| 66kV | 1.2 | 0.0 | 4.4 | 2.9 |
| 33kV | 3.8 | 2.0 | 3.9 | 3.7 |
| 11kV | 8.5 | 7.7 | 11.6 | 7.7 |
| All | 8.0 | 7.1 | 10.9 | 7.3 |
(b) & (c) Target number of faults per 100 circuit-km of electric line:
| Voltage | 2006 | Average 2006 - 2010 |
|---|---|---|
| 66kV | 2.0 | 2.0 |
| 33kV | 4.0 | 4.0 |
| 11kV | 12.0 | 12.0 |
| All | 11.0 | 11.2 |
Next Page →
Online Sources for this page:
VUW Te Waharoa —
NZ Gazette 2005, No 132
Gazette.govt.nz —
NZ Gazette 2005, No 132
β¨ LLM interpretation of page content
π°
Disclosure of reliability performance measures
(continued from previous page)
π° Finance & RevenueEnergy reliability, Interruptions, Planned shutdowns, Unplanned cuts, Faults per circuit-km, Electricity