Mr. Simpson's question seeks detailed information on power outages in Jarrahdale for 2006-2007, which Western Power provides, highlighting the area's inclusion in the 'Top 40 Worst Feeders' program and detailing outage frequency, duration, impact, and causes.

AnsweredQoN 3035Legislative Assembly
Asked
26 February 2008
Portfolio
Energy

QuestionView source ↗

(a) how many power outages this locality suffered during this period;
(b) the duration of the shortest and longest power outage;
(c) the average duration of outages affecting this locality;
(d) the greatest and lowest number of homes affected by these outages;
(e) the average number of homes affected by these outages; and
(f) the primary causes of these outages?

AnswerView source ↗

Answered
19 March 2008
Responded by
Minister for Energy
Response time
22 days
Western Power has provided the Minister for Energy with the following response.
The locality of Jarrahdale is included in the Top 40 Worst Feeders program.
(a) 2006 - 36 network outages
2007 - 48 network outages
(b) 2006 - The shortest outage was 1.4 minute and the longest was 8.9 hours.
2007 - The shortest outage was 4.9 minutes and the longest was 11 hours.
(c) 2006 - The average duration of outages was 2.8 hours.
2007 - The average duration of outages was 2.9 hours.
(d) 2006 - The highest number of homes affected by these outages was 341 and the lowest was 2.
2007 - The highest number of homes affected by these outages was 453 and the lowest was 2.
(e) 2006 - The average number of homes affected by each outage was 46.
2007 - The average number of homes affected by each outage was 69.
f) 2006 - The primary causes of these outages were planned outages (15), equipment failures (6) and unknown causes (6).
2007 - The primary causes of these outages were planned outages (15), equipment failures (11) and unknown causes (7).
Notes:
All information provided was for the locality of Jarrahdale supplied from all SWIS (South West Interconnected System) distribution feeders for both calendar years 2006 and 2007.
The definitions of the fault causes listed above are:
Planned outages
are when customers have been given a minimum of 3 days advance notice of the outage. Planned outages are generally as a result of doing improvement works on the network.
Equipment failure
is where the condition of the equipment results in equipment failing. This also includes pole top fire incidents.
A fault cause is listed as
unknown
when the cause of the outage could not be determined.
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