Trip of multiple Transmission Lines in the vicinity of Braemar 275 kV Substation - 13 November 2009

On 13 November 2009, multiple transmission network elements in the vicinity of Braemar 275 kV substation and generating units at Braemar 2 Power Station were disconnected during two separate faults on the transmission network. The first fault occurred during a thunderstorm in the area and the second fault resulted due to a failure of a surge arrestor at Braemar 275 kV substation.

This report has been prepared under clause 4.8.15 of the National Electricity Rules to assess the adequacy of the provision and response of facilities and services, and the appropriateness of actions taken to restore or maintain power system security.

This report is largely based upon information provided by Powerlink and ERM Power.

All references to time in this report refer to Market time (Australian Eastern Standard Time).

For enquires relating to this event please contact Dalibor Balicevic, Electricity System Operations Planning and Performance

Power System Incident Report: Trip of multiple Transmission Lines in the vicinity of Braemar 275 kV Substation - 13 November 2009
15 Mar 2010 | filename: 0232-0042.pdf