The 66kV feeder, which originates from the Nyngan 132kV zone substation, had limited capacity primarily due to the voltage level at the Cobar town zone substation being affected by voltage regulation on the 132kV and 66kV networks, and the high and low loading periods.
In addition, the 66kV supply to Cobar town zone substation was constrained by voltage regulation and conductor ground line clearance violations, both of which adversely affect supply capacity.
A new regulator and upgrade of the 66kV feeder was required to maintain the 66kV voltage level at Cobar at an acceptable level during high and low loading periods, and to rectify the violations of the
Ace Electrical was appointed as the head contractor for this contract.
Ace Electrical was involved in the following scope of works: