New Zealand Gazette – 2005 – No. 149

Page 3661

✨ Reliability Performance Measures



Reliability Performance Measures (Requirement 21)

CAIDI

Class Average CAIDI Targets CAIDI Targets Actual CAIDI
2006/10 2005 2004

CAIDI for total number of interruptions (= a/b)

where -

a = sum of interruption duration factors for all interruptions
b = sum of electricity consumers affected by each of those interruptions

| | | 133 | 127 | 134 | 68 |

CAIDI Targets

Planned Interruptions

Class B

| | 133 | 143 |

Unplanned Interruptions

Class C

| | 129 | 142 |

where -

Planned interruptions

a = sum of interruption duration factors for all interruptions
b = projected number of electricity consumers affected by each of those interruptions

| Class B | 994,240 | 1,068,808 |

| | 7,457 | 7,457 |

Unplanned interruptions

a = sum of interruption duration factors for all interruptions
b = projected number of electricity consumers affected by each of those interruptions

| Class C | 5,365,370 | 6,015,752 |

| | 42,255 | 42,255 |

CAIDI for total number of interruptions within each interruption class (= a/b)

Class 2006/10 2005 2004 2003 2002
Class A 0 0 210 312 DNV0
Class B 196 161 147 256 -
Class C 130 169 113 49 -
Class D 309 22 309 0 -
Class E 0 0 0 0 -
Class F 0 0 0 0 -
Class G 0 154 0 0 -
Class H 0 0 0 0 -
Class I 0 0 0 0 -

CAIDI for total of interruptions

where -
a = sum of interruption duration factors for all interruptions

| | 133 | 127 | 134 | 68 |

| Class A | 0 | 78,750 | 587,769 | -
| Class B | 766,018 | 846,417 | 1,436,653| 1,398,160 |
| Class C | 6,204,120| 7,344,384 | 7,213,916| 2,861,194 |
| Class D | 50,694 | 77,041 | 1,545,203| 48,870 |
| Class E | 0 | 0 | 0 | 0 |
| Class F | 0 | 0 | 0 | 0 |
| Class G | 0 | 27,721 | 0 | 0 |
| Class H | 0 | 0 | 0 | 0 |
| Class I | 0 | 0 | 0 | 0 |

b = sum of electricity consumers affected by each of those interruptions within that interruption class

| Class A | 0 | 375 | 1,883 | -
| Class B | 4,723 | 6,025 | 9,795 | 7,478 |
| Class C | 47,724 | 43,485 | 64,049 | 56,178 |
| Class D | 497 | 1,279 | 5,000 | 5,430 |
| Class E | 0 | 0 | 0 | 0 |
| Class F | 0 | 0 | 0 | 0 |
| Class G | 0 | 180 | 0 | 0 |
| Class H | 0 | 0 | 0 | 0 |
| Class I | 0 | 0 | 0 | 0 |



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Online Sources for this page:

VUW Te Waharoa — PDF NZ Gazette 2005, No 149


Gazette.govt.nz — PDF NZ Gazette 2005, No 149




✨ LLM interpretation of page content

🏗️ Reliability Performance Measures (Requirement 21) (continued from previous page)

🏗️ Infrastructure & Public Works
Interruptions, Faults, Class A, Class B, Class C, Class D, Class E, Class F, Class G, Class H, Class I, 50kV, 33kV, 11kV, Electricity, Performance, Reliability, SAIDI, Planned Interruptions, Unplanned Interruptions, CAIDI