Abstract
Australia is one of the leading countries in energy transition, and its largest power system is intended to securely operate with up to 75% of variable renewable generation by 2025. High-inertia synchronous condensers, battery energy storage systems, and grid-forming converters are some of the technologies supporting this transformation while facilitating the secure operation of the grid. Synchronous condensers have enabled 2500 MW of solar and wind generation in the state of South Australia, reaching minimum operational demands of ≈100 MW. Grid-scale battery energy storage systems have demonstrated not only market benefits by cutting costs to consumers but also essential grid services during contingencies. Fast frequency response, synthetic inertia, and high fault currents are some of the grid-supporting capabilities provided by new developments that strengthen the grid while facilitating the integration of new renewable energy hubs. This manuscript provides a comprehensive overview, based on the Australian experience, of how power systems are overcoming expected challenges while continuing to integrate secure, low cost, and clean energy.
Highlights
Investment in large-scale renewable generation has accounted more than 60% of new global power generation in the last couple of years [1]
The gigawatt-scale South Australian grid is demonstrating how inverter-based resources (IBRs) renewable energy can supply more than 60% of demand while keeping a secure and reliable electricity service
Traditional IBR technologies do not provide essential services to the grid that are commonly provided by synchronous generators, which are being retired
Summary
Investment in large-scale renewable generation has accounted more than 60% of new global power generation in the last couple of years [1]. The integration of REZ generation projects is limited by existing/planned grid infrastructure, in addition, to new operational challenges. Since many of REZ projects connect via power electronics converters, their continuous connection further weakens the area This results in a series of additional challenges if no appropriate measures are taken. Some of the actions that can result in managing power system requirements include the utilization of a range of flexible devices such as high-inertia SynCons and BESSs. Targeted actions together with suitable investments in infrastructure can allow the NEM to operate securely with up to 75% of variable renewable generation by 2025 and near 90% by 2035 [14].
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
