On 2 February 2008 at 17:34 hrs, mal-functioning fire deluge systems resulted in the tripping of the Keilor Terminal Station (KTS) A4 500 kV transformer. However, the A4 transformer No.3 bus 220 kV transformer circuit breaker failed to open. Consequently backup protection tripped the No.3 220 kV bus at Keilor Terminal Station (KTS).
This report has been prepared in accordance with Rule 4.8.15 of the National Electricity Rules to document NEMMCO’s assessment of the adequacy of the provision and response of facilities and the appropriateness of the actions taken to restore and maintain power system security.
For further information on this document, please contact: Michael Lyons, Head of System Operations Planning and Performance.
 73Kb |
Power System Incident Report: 500/220 kV Transformer Trip and 220 kV Bus trip at Keilor Terminal Station on 2 February 2008 - 02 Jun 2008 filename: 232-0092.pdf |