Abstract

Increasing the penetration of inverter-based generation in a power system results in reduced system inertia, which can lead to various stability issues. As a result, regulation of voltage and frequency are of considerable concern with the increased usage of non-synchronous generation. Grid-forming (GFM) inverters can provide options to help address these challenges. Battery energy storage systems (BESSs) are important for the economic and reliable operation of the grid, because of their capability for energy storage, bidirectional energy exchange, and fast output response. With the increasing penetration of renewable energy sources on the grid, the importance of BESSs is becoming more vital. With an appropriate control strategy, inverters integrated with BESSs can provide a promising solution to stability problems in modern power systems. Topics covered in this chapter include: inverter architecture, control architecture, BESS model, integrated BESS with GFM inverter model, large-scale BESS, application example, and simulation results.

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