Managing the Risk of South East SVC Control Systems Failure
ElectraNet is proposing to replace the two static VAR compensator computer control systems at the South East substation to maintain safe and efficient supply to customers.
The SVCs installed at the South East substation are critical to providing reliable power transfer by generating or absorbing reactive power in response to power system disturbances, thereby controlling voltage levels across the South Australian transmission network to maximise transfer capability between South Australia and Victoria. Without the SVCs, the amount of energy that can be transferred across the Heywood Interconnector would be greatly reduced. Without the control systems, the SVCs themselves would not be able to operate.
The two SVC computer control systems are at end of life and require replacement to ensure reliable operation of the Heywood Interconnector and to maximise the transfer capability between South Australia and Victoria.