New South Wales transmission network recognised for engineering innovation

Transgrid
TransGrid's Western Sydney Supply Project

TransGrid’s Western Sydney Supply Project has been highly commended in the Engineers Australia, Engineering Excellence Awards.

The annual awards are designed to recognise the contribution engineers make to the community through their innovations, teamwork and creativity for outstanding achievements in the practice of engineering.

The project was established to address the need to provide an additional 330kV/132kV bulk supply point within the inner metropolitan area of Sydney to alleviate emerging constraints on the existing cable network supplying the area load.

The project will help to secure and strengthen the high-voltage network, which currently delivers electricity to the greater Sydney area and CBD.

The project included the construction of two new 330kV/132kV substations; the installation of a new 330kV underground transmission cable between the two substations; and the upgrade of a 10km double circuit 330kV overhead transmission line between an existing TransGrid substation and one of the new substations.

The project proved particularly demanding as it involved working in a highly populated and urbanised area, which would usually involve disruptive excavation and road closures. However, TransGrid developed a strategy to minimise these social and financial impacts through the maximisation of existing infrastructure corridors.

In order to minimise the impact of the project on the community and the environment, TransGrid utilised an existing Sydney Water pipeline for installation of the underground transmission cable. The installation of the overhead transmission line was performed by acquiring and remodelling an existing transmission line from Endeavour Energy.

By utilising existing infrastructure corridors, TransGrid was also able to eliminate the need to construct a new easement, which reduced the environmental impact of the project as well as the impact on surrounding landowners and businesses.

The Western Sydney Supply Project was also a finalist in the infrastructure category.