β¨ Electricity Reliability Statistics
NEW ZEALAND GAZETTE
No. 80
Network Waitaki Limited (Lines)
Reliability and Performance Measures
System Average Interruption Duration Index (SAIDI)
| Class | 2002/06 (Target) | 2002 (Target) | 2001 | 2000 | 1999 | 1998 | |
|---|---|---|---|---|---|---|---|
| SAIDI for total number of interruptions | Overall | 65.00 | 65.00 | 72.16 | 46.13 | 63.28 | 87.41 |
| SAIDI for total number of interruptions within each interruption class (= a/b) | Class A | 0.00 | 0.00 | 0.00 | 0.00 | ||
| Class B | 15.00 | 15.00 | 16.66 | 1.91 | 12.68 | 14.84 | |
| Class C | 50.00 | 50.00 | 55.50 | 44.22 | 50.60 | 72.57 | |
| Class D-1 | 0.00 | 0.00 | 0.00 | 0.00 |
| a = sum of interruption duration factors for all interruptions within the particular interruption class | Class A | | | 0 | 0 | 0 | 0 |
| | Class B | 170,400 | 174,600 | 195,410 | 22,535 | 150,334 | 176,314 |
| | Class C | 568,000 | 582,000 | 650,735 | 521,028 | 599,914 | 862,204 |
| | Class D-1 | | | 0 | 0 | 0 | 0 |
| b = Total Connections | | | | 11,360 | 11,640 | 11,726 | 11,783 | 11,856 | 11,881 |
System Average Interruption Frequency Index (SAIFI)
| Class | 2002/06 (Target) | 2002 (Target) | 2001 | 2000 | 1999 | 1998 | |
|---|---|---|---|---|---|---|---|
| SAIFI for total number of interruptions | Overall | 0.95 | 0.95 | 0.99 | 0.83 | 1.33 | 1.45 |
| SAIFI for total number of interruptions within each interruption class (= a/b) | Class A | 0.000 | 0.000 | 0.000 | 0.000 | ||
| Class B | 0.120 | 0.120 | 0.118 | 0.014 | 0.060 | 0.130 | |
| Class C | 0.830 | 0.830 | 0.877 | 0.820 | 1.270 | 1.320 | |
| Class D-1 | 0.000 | 0.000 | 0.000 | 0.000 |
| a = sum of electricity connections affected by each of those interruptions | Class A | | | 0 | 0 | 0 | 0 |
| | Class B | 1,363 | 1,397 | 1,380 | 169 | 711 | 1,545 |
| | Class C | 9,429 | 9,661 | 10,279 | 9,663 | 15,057 | 15,663 |
| | Class D-1 | | | 0 | 0 | 0 | 0 |
| b = Total Connections | | | | 11,360 | 11,640 | 11,726 | 11,783 | 11,856 | 11,881 |
Connection Average Interruption Duration Index (CAIDI)
| Class | 2002/06 (Target) | 2002 (Target) | 2001 | 2000 | 1999 | 1998 | |
|---|---|---|---|---|---|---|---|
| CAIDI for total number of interruptions | Overall | 68.42 | 68.42 | 72.57 | 55.28 | 47.58 | 60.28 |
| CAIDI for total number of Interruptions within each interruption class | Class A | 0.000 | 0.000 | 0.000 | 0.000 | ||
| Class B | 125.000 | 125.000 | 141.601 | 133.368 | 211.333 | 114.154 | |
| Class C | 60.241 | 60.241 | 63.307 | 53.919 | 39.843 | 54.977 | |
| Class D-1 | 0.000 | 0.000 | 0.000 | 0.000 |
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Online Sources for this page:
VUW Te Waharoa —
NZ Gazette 2001, No 80
Gazette.govt.nz —
NZ Gazette 2001, No 80
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