Mt Barker South Substation

ElectraNet were looking for a turnkey solution in design and construction of a new 275/66kV substation with one 225MVA 275/66kV transformer at Mount Barker South 

The customer

ElectraNet delivers safe, affordable and reliable solutions to power South Australian homes and businesses. Their transmission network is a crucial part of the electricity supply chain and is used to safely deliver electricity throughout South Australia including regional and remote areas. ElectraNet specialise in asset and project management, contract management and their clients include SA Power Networks, Enerven and large directly connected clients.

The opportunity

ElectraNet needed the design and construction of a new 275/66kV substation completed along with one 225MVA 275/66kV transformer at Mount Barker South. This scope would include the design and construction of the new 275/66kV substation bench including bulk earth works, internal roadways, fencing, site drainage, final surfacing and all civil works including an access road, foundations for equipment and buildings, cable trenches, fire walls, oil/water separator tank and evaporation pond.

The solution

Enerven was able to provide a solution that ticked all the boxes. Not only were Enerven able to deliver the design and construction of the substation, we incorporated the design of lighting, lightning protection and insulation coordination, design, procurement, installation and erection of all electrical equipment, including plant, plant stands, equipment, auxiliary transformers, diesel generator, cables, panels for AC/DC auxiliary supply, lighting and lightning mast with earth grid.

Enerven delivered a review of the earthing system (main earth grid and risers) of Kanmantoo Copper Mine, Murray Bridge to Hahndorf pumping Station No 2 & 3 Mount Barker substations and design, supply and install to mitigate the touch and step voltage hazards inside and outside the substation. A new radio repeater site at Mount Barker South (Hoeflingers Farm, south of the proposed substation site) was implemented, along with optic fibre cables; installed between Hoeflingers Farm to Mount Barker South substation. OPGW (Optical Ground Wire) retrofit between Mount Barker South Cherry Gardens substations was also completed as part of the project.