South Australian Government - Wide Area Grid Modelling.
Executive Summary.
Up-to-date, wide-area PSS®E models of the South Australian (SA) transmission network were developed to support ongoing network planning and assessment activities. Two representative base cases, High Load (HL) and Low Load (LL), were derived from Australian Energy Market Operator (AEMO) network snapshots and enhanced to reflect the current and forecast state of the SA network.
The enhanced base cases incorporate newly committed and planned generation aligned with the SA planning outlook, along with Project EnergyConnect (PEC) to capture its impact on the SA network. A range of interconnector flow scenarios covers different operating conditions and power transfer levels between SA and the adjacent Victorian (VIC) and New South Wales (NSW) networks, while further scenarios model battery energy storage system (BESS) charging and discharging states to assess their influence on network performance. The models also include committed data centre loads and future key transmission network developments, so they reflect the region’s evolving demand and network infrastructure.