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Publicado: 17 de enero de 2013
TITLE:
Annual Reliability and Power Quality Report – 1 July 2010 - 30 June 2011
PREPARED BY:
Network Performance Branch
THIS REVISION:
FINAL
PROVIDE TO AUTHORITY:
23 September 2011
Network Performance Branch, Networks Division
This document is confidential and may be subject to legal professional privilege and must not be disclosed to any person without the express writtenconsent of Western Power. © Western Power 2010
safe reliable efficient
Annual Reliability and Power Quality Report – 1 July 2010 - 30 June 2011__________________________________
Document Control
Endorsement Approvals
Name Submitted by Endorsed by Approved by Ian Gibb Ankur Maheshwari Mark de Laeter Title Asset Management Systems Manager Manager Network Performance General ManagerSignature
This document must not be made available to personnel outside Western Power without the prior written approval of Western Power.
Page 2 Uncontrolled document when printed Refer to DM for current version
DM# 8455026
__________________________________Annual Reliability and Power Quality Report – 1 July 2010 - 30 June 2011
Executive Summary
This Annual Reliability and PowerQuality Report allows the Government, the community and other stakeholders to see how Western Power’s electricity network is performing with respect to obligations under Schedule 1 of the Electricity Industry (Network Quality and Reliability of Supply) Code 2005 (the Code). The reliability performance of the Western Power Network in 2010/11 compared to the previous year has improved. Therewere a number of Western Power activities throughout the reporting period which delivered this reliability improvement to customers. These initiatives and activities included deployment of specific auto-reclosers and load break switching equipment; continuation of the State Underground Power Program targeted infrastructure rebuilds and augmentation; and routine and targeted maintenance programs.The reliability improvement this year was also attributed by the reduction in the impact of interruptions caused by environmental factors such as inclement weather, flora and fauna. These influences, however, caused adverse affects on the reliability of supply within the rural areas, as such programs will continue to be implemented to address the reliability of supply in these areas. The PowerQuality compliance level of 8% Total Harmonic Distortion (“THD”) was met for all sites 100% of the time. The total number of customer interruptions lasting greater than 12 hours improved by 48%, subsequently there was a reduction in the number of customer claims for extended outages.
DM# 8455026 Uncontrolled document when printed Refer to DM for current version
Page 3
AnnualReliability and Power Quality Report – 1 July 2010 - 30 June 2011__________________________________
Contents
Executive Summary ................................................................................................ 3 1 2 3 4 5 6 7 Purpose........................................................................................................... 5 1.1Definitions.................................................................................................... 5 How to read this report .................................................................................. 6 Network Topology.......................................................................................... 7 Overview......................................................................................................... 8 Interruptions exceeding 12 hours ................................................................10 5.1 6.1 7.1 7.2 8 8.1 8.2 8.3 8.4 9 9.1 9.2 9.3 10 Response ...................................................................................................10 Response ...................................................................................................12 Planned...
Annual Reliability and Power Quality Report – 1 July 2010 - 30 June 2011
PREPARED BY:
Network Performance Branch
THIS REVISION:
FINAL
PROVIDE TO AUTHORITY:
23 September 2011
Network Performance Branch, Networks Division
This document is confidential and may be subject to legal professional privilege and must not be disclosed to any person without the express writtenconsent of Western Power. © Western Power 2010
safe reliable efficient
Annual Reliability and Power Quality Report – 1 July 2010 - 30 June 2011__________________________________
Document Control
Endorsement Approvals
Name Submitted by Endorsed by Approved by Ian Gibb Ankur Maheshwari Mark de Laeter Title Asset Management Systems Manager Manager Network Performance General ManagerSignature
This document must not be made available to personnel outside Western Power without the prior written approval of Western Power.
Page 2 Uncontrolled document when printed Refer to DM for current version
DM# 8455026
__________________________________Annual Reliability and Power Quality Report – 1 July 2010 - 30 June 2011
Executive Summary
This Annual Reliability and PowerQuality Report allows the Government, the community and other stakeholders to see how Western Power’s electricity network is performing with respect to obligations under Schedule 1 of the Electricity Industry (Network Quality and Reliability of Supply) Code 2005 (the Code). The reliability performance of the Western Power Network in 2010/11 compared to the previous year has improved. Therewere a number of Western Power activities throughout the reporting period which delivered this reliability improvement to customers. These initiatives and activities included deployment of specific auto-reclosers and load break switching equipment; continuation of the State Underground Power Program targeted infrastructure rebuilds and augmentation; and routine and targeted maintenance programs.The reliability improvement this year was also attributed by the reduction in the impact of interruptions caused by environmental factors such as inclement weather, flora and fauna. These influences, however, caused adverse affects on the reliability of supply within the rural areas, as such programs will continue to be implemented to address the reliability of supply in these areas. The PowerQuality compliance level of 8% Total Harmonic Distortion (“THD”) was met for all sites 100% of the time. The total number of customer interruptions lasting greater than 12 hours improved by 48%, subsequently there was a reduction in the number of customer claims for extended outages.
DM# 8455026 Uncontrolled document when printed Refer to DM for current version
Page 3
AnnualReliability and Power Quality Report – 1 July 2010 - 30 June 2011__________________________________
Contents
Executive Summary ................................................................................................ 3 1 2 3 4 5 6 7 Purpose........................................................................................................... 5 1.1Definitions.................................................................................................... 5 How to read this report .................................................................................. 6 Network Topology.......................................................................................... 7 Overview......................................................................................................... 8 Interruptions exceeding 12 hours ................................................................10 5.1 6.1 7.1 7.2 8 8.1 8.2 8.3 8.4 9 9.1 9.2 9.3 10 Response ...................................................................................................10 Response ...................................................................................................12 Planned...
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