New Zealand Gazette – 2005 – No. 149

Page 3659

✨ Electricity Reliability Performance Measures



Reliability Performance Measures (Requirement 21)

SAIDI

Average SAIDI Targets Actual SAIDI
Class 2006/10 2008 2005

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

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

| | | 282.53 | 359.81 | 367.86 | 552.98 |

SAIDI Targets (= a/b)

| | Planned Interruptions | Class B | 40 | 43 |
| | Unplanned Interruptions | Class C | 220 | 242 |

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

Class B
994,240

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

Class C
5,468,320

b = Projected total consumers

| 24,856 | 24,856 |

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

| Class A | 0.00 | 3.17 | 23.27 | 0.00 |
| Class B | 31.00 | 38.05 | 56.95 | 75.89 |
| Class C | 249.98 | 295.24 | 295.54 | 111.98 |
| Class D | 1.65 | 10.75 | 1.91 | 574.71 |
| Class E | 0.00 | 0.00 | 0.00 | 0.00 |
| Class F | 0.00 | 0.00 | 0.00 | 0.00 |
| Class G | 0.00 | 1.11 | 0.00 | 0.00 |
| Class H | 0.00 | 0.00 | 0.00 | 0.00 |
| Class I | 0.00 | 0.00 | 0.00 | 0.00 |

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

| | 282.83 | 358.31 | 367.88 | 582.68 |

| Class A | - | 78,750 | 587,769 | 0 |
| Class B | 770,671 | 946,417 | 1,438,893 | 1,939,160 |
| Class C | 6,213,421 | 7,344,364 | 7,213,916 | 2,881,194 |
| Class D | 38,505 | 468,448 | 1,545,201 | 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 = Total consumers

| 24,856 | 24,876 | 25,264 | 25,552 |



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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