β¨ Reliability Performance Measures
3.3 RELIABILITY PERFORMANCE MEASURES
For the six months ended 30 June 2003
Schedule 1 β PART 4
Unplanned interruptions in distribution systems
a) The measure of unplanned interruptions (other than those directly resulting from unplanned interruptions of a transmission system) calculated by the formula a/b where:
a = the sum obtained by adding together the number of customer-hours lost during each interruption; and
b = the total number of customers being supplied by means of the system.
| System | Jan03-Jun03 | Jan02-Dec02 | Jan01-Dec01 | Apr00-Dec00 |
|---|---|---|---|---|
| Unplanned interruption measure | ||||
| (within distribution system) | ||||
| Alfriston | - | - | - | 0.3333 |
| Ashhurst | - | # | # | 0.0078 |
| Auckland Central | 0.0007 | 0.0024 | 0.0013 | 0.0013 |
| Bruce McLaren ^ | - | - | - | - |
| Dannevirke | - | # | # | - |
| Drury | - | - | 0.0167 | - |
| Feilding | - | # | # | 0.0009 |
| Foxton | - | # | # | - |
| Hastings | - | # | # | 0.0006 |
| Hunua | - | - | - | - |
| Kakariki | - | # | # | - |
| Kairaga | - | # | # | - |
| Kingseat | - | - | # | - |
| Levin | - | # | # | 0.0007 |
| Longburn | - | # | # | - |
| Mangaroa | - | # | # | - |
| Mangatainoka | - | # | # | - |
| Oroua Downs | - | # | # | - |
| Pahiatua | - | # | # | 0.0022 |
| Palmerston North | - | # | # | - |
| Pukekohe | - | - | - | - |
| Ramarama | - | - | - | - |
| Takapau | - | - | - | - |
| Tuakau | - | - | - | - |
| Waiuku ^ | - | - | - | - |
| Wellington | - | 0.0040 | 0.0105 | 0.0053 |
On systems where the number of customers affected has been recorded but the duration of each interruption is not recorded and the local engineer has estimated the average length of the interruptions.
Data indicated by # has been amalgamated into the Wellington system.
^ During 2002 the Waimaku and Waiuku gates were removed. Bruce McLaren has been interconnected with other Auckland Central Networks.
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Online Sources for this page:
VUW Te Waharoa —
NZ Gazette 2003, No 163
Gazette.govt.nz —
NZ Gazette 2003, No 163
β¨ LLM interpretation of page content
π°
Performance Measures and Statistics
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