Conpower

ElectraNet undertook a Unit Asset Replacement (UAR) program from 2018 to 2023, focusing on replacing critical substation components such as circuit breakers, isolators, and transformers due to their history of failures and safety risks. This initiative addressed aging infrastructure and technical obsolescence across 34 substations in South Australia. The project involved extensive skills in procurement, outage management, and substation construction, aiming to enhance reliability and efficiency amidst challenges typically encountered in brownfield sites.

This project involves critical upgrades and replacements at both Mt Barker and Angas Creek substations to enhance operational reliability and performance. Major tasks included replacement of substation primary plant components; primarily, 132kV and 275kV, which included: CT’s, CVT’s, CB’s, power cabling, control cabling, bus bar supports, as well as control and protection systems, including, relays, SCADA, and telecommunication networks.

• Engineering design, and installation of primary plants
• Replacement and upgrades of 34 protection devices
• Replacement of 12 HV instrument transformers
• Replacement of 12 HV surge arrestors
• Replacement of 50 x Protection devices and integration across 6 sites
• Design, supply and install control cables, cable trench modifications, cable pits and cable conduits