Granville Harbour Wind Farm Transmission Line and Substation

Granville Harbour Wind Farm Transmission Line and Substation
Quick Facts
ClientTasNetworks
LocationZeehan, West Coast Tasmania
TimingSeptember 2018 - November 2019
ContractDesign and construct
SectorUnregulated

The $280 million Granville Harbour Wind Farm is currently under construction near Zeehan, on the picturesque west coast of Tasmania.

Quick Facts
ClientTasNetworks
LocationZeehan, West Coast Tasmania
TimingSeptember 2018 - November 2019
ContractDesign and construct
SectorUnregulated

When complete, the wind farm will host 31 wind turbines that will produce up to 112 megawatts of clean, renewable energy available to Tasmanians; diversifying the state’s energy generation mix. This is enough electricity to power around 46,000 homes.

The wind farm will be connected to the Tasmanian grid via a new 12.5km transmission line that will join up to a connection point at the existing Reece Dam.

Zinfra were engaged by TasNetworks to design and construct the 11km Single Circuit 220kV Steel Pole Transmission Line, a 220kV Switching Station, and a 1.5km Dual Circuit 220kV Lattice Steel Tower Transmission Line across the Reece Dam wall connecting into the Hydro Tasmania Reece Power Station. Scope of works include:

  • Clearing, stock piling and site development: Clearing of site vegetation;

    • Construction of temporary and permanent access tracks;

    • Benching and levelling of proposed construction area;

    • Stockpiling of construction aggregate.

  • Switching Station design and construction:

    • 6 x 220kV disconnectors;

    • 3 x 220kV circuit breakers;

    • Associated post insulators & solid bus;

    • 12 x Capacitive Voltage Transformers (CVTs);

    • New conduit systems to new equipment;

    • New Pre-fabricated control building;

    • New fence arrangement;

    • New access track & associate internal pathways;

    • Associated secondary cabling and equipment;

    • Associated primary conductor and compression fittings.

  • Transmission line design and construction:

    • 11km single and 1.5km dual circuit 220kV transmission line to the new Dual OPGW Circuit Pieman Switching Station;

    • Two new circuits with hard tee at the Farrell – Reece No.1 and No.2 translines adjacent to the Reece Power Station;

    • Pole and tower foundation designs allowing for foundation type selection based on confirmed ground conditions;

    • Pole and tower erection;

    • All associated stringing activities.