Abstract: This paper presents the updated status of energy storage (ES) technologies, and their technical and economical characteristics, so that, the best technology can be selected either for grid-connected or off-grid power system applications.
Grid-connected inverter PV power station is connected to bus Bus1. In the dotted box of Bus1 is GFMI energy storage converter + energy storage battery, and its influence on the whole system is verified by adding this energy storage part. Add a load on the Bus5 side, and observe the inertia of the system by switching the load.
Based on PSCAD model, this report verifies the influence of GFMI inverter + battery energy storage solution on power grid system through three modeling cases. Through simulation results, the following two conclusions can be drawn: GFMI inverter + battery energy storage solution can increase the strength (SCR) of the grid system.
Hawaiian Electric Company: This company aims to deploy grid-forming inverter-based energy storage systems by 2023. Extensive work confirms the critical role of grid-forming inverter technology in ensuring reliable operations under high renewable energy penetration.
This is because the energy storage system scheme of Grid-forming energy storage inverter is added, which enhances the short-circuit capacity of parallel nodes. Therefore, for new energy power stations such as photovoltaics, the grid strength is effectively enhanced by adding GFMI energy storage solution.
Manufacturers recognize that grid-forming inverters are not just a short-term trend but rather a critical component of future energy systems. As the deployment of GFI continues to rise, their role on the grid is transforming. Currently, grid-following IBREs, which rely on strong grid signals for operation, dominate the market.