β¨ Electricity Reliability Statistics
NEW ZEALAND GAZETTE
27 OCTOBER
Reliability Performance Measures (Schedule 1, Part 5)
Para
| | | Average SAIDI Targets | SAIDI Targets | Actual SAIDI |
|---|---|---|---|---|---|---|
| | Class | 2001/05 | 2001 | 2000 | 1999 | 1998 | 1997 |
SAIDI
8
SAIDI for total number of interruptions (= a/b)
where -
a = sum of interruption duration factors for all interruptions
b = Total consumers
| | | | | 235.34 | 404.01 | 518.77 | 714.82 |
9, 10
SAIDI Targets (= a/b)
Planned Interruptions
| Class B | 151 | 152 |
| Class C | 63 | 65 |
Unplanned Interruptions
where -
Planned Interruptions (pi)
a = sum of interruption duration factors for all interruptions
Unplanned Interruptions (ui)
a = sum of interruption duration factors for all interruptions
b = Projected total consumers
| Class B | 3,896,000 | 4,697,000 |
| Class C | 1,625,000 | 1,792,000 |
| | | 25,800 | 25,800 |
11
SAIDI for total number of interruptions within each interruption class (= a/b)
| Class A | | | 1.68 | 0.00 | 0.00 | 0.00 |
| Class B | | | 47.95 | 164.46 | 235.95 | 180.25 |
| Class C | | | 183.43 | 239.55 | 253.16 | 532.49 |
| Class D | | | 2.28 | 0.00 | 29.66 | 2.08 |
SAIDI for total of interruptions
| | | | 235.34 | 404.01 | 518.77 | 714.82 |
where -
a = sum of interruption duration factors for all interruptions within the particular interruption class
b = Total consumers
| Class A | | | 39,732 | | | |
| Class B | | | 1,136,102 | 3,283,380 | 4,671,102 | 3,582,469 |
| Class C | | | 4,346,118 | 4,753,391 | 5,011,809 | 10,583,239 |
| Class D | | 54,126 | 23,694 | 587,179 | 41,340 |
b = Total consumers
| | | 25,800 | 19,843 | 19,797 | 19,875 |
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Online Sources for this page:
VUW Te Waharoa —
NZ Gazette 2000, No 146
Gazette.govt.nz —
NZ Gazette 2000, No 146
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Electricity System Statistics
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