New Zealand Gazette – 2008 – No. 55

Page 1566

✨ Reliability Performance Measures

Reliability Performance Measures (Requirement 21)

SAIDI

	Average SAIDI Targets	SAIDI Targets	Actual SAIDI
Class	2008/12	2008	2007

SAIDI for total number of Interruptions (s = a/b)

where -

a = sum of interruption duration factors for all interruptions
b = Total consumers

| | | | 261.50 | 358.95 | 282.53 | 307.61 |

SAIDI Targets (s = a/b)

| Planned Interruptions | Class B | 42.75 | 42.75 |
| Unplanned Interruptions | Class C | 242.25| 242.25|

where -
Planned Interruptions (pl)
a* = sum of interruption duration factors for all interruptions

| Class B | 1,007,125 | 1,067,125 |

Unplanned Interruptions (ui)
a** = sum of interruption duration factors for all interruptions

| Class C | 6,047,044 | 6,047,044 |

b = Projected total consumers

| | 24,962 | 24,962 |

SAIDI for total number of Interruptions within each Interruption class (s = a/b)

| Class A | | 4.32 | 5.53 | 0.00 | 3.17 |
| Class B | | 18.76 | 27.50| 31.00| 38.05|
| Class C | | 237.62| 321.80| 249.98| 295.24|
| Class D | | 0.00 | 1.22 | 1.55 | 18.75|
| Class E | | 0.00 | 0.00 | 0.00 | 0.00 |
| Class F | | 0.00 | 0.00 | 0.00 | 0.00 |
| Class G | | 0.80 | 0.00 | 0.00 | 1.11 |
| Class H | | 0.00 | 0.00 | 0.00 | 0.00 |
| Class I | | 0.00 | 2.90 | 0.00 | 0.00 |

SAIDI for total of Interruptions

where -
a = sum of interruption duration factors for all interruptions within the particular interruption class

| | | 261.50 | 358.95 | 282.53 | 356.32 |

| Class A | | 107,583 | 137,428 | 0 | 78,750 |
| Class B | | 467,429 | 683,679 | 770,671 | 946,417 |
| Class C | | 5,919,894| 8,001,348| 6,213,421| 7,344,364|
| Class D | | 0 | 30,383 | 38,505 | 466,448 |
| Class E | | 0 | 0 | 0 | 0 |
| Class F | | 0 | 0 | 0 | 0 |
| Class G | | 19,872 | 0 | 0 | 27,721 |
| Class H | | 0 | 0 | 72,195 | 0 |
| Class I | | 0 | 14,405 | 0 | 0 |

b = Total consumers (avg)

| | 24,913 | 24,864 | 24,856 | 24,876 |

VUW Te Waharoa — NZ Gazette 2008, No 55

Gazette.govt.nz — NZ Gazette 2008, No 55

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✨ LLM interpretation of page content

🏗️ Reliability Performance Measures for Electricity Interruptions and Faults (continued from previous page)

Domain🏗️ Infrastructure & Public Works
KeywordsElectricity, Reliability, Interruptions, Faults, Performance Measures, Statistics

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