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Emergency Battery Energy Storage System Shedding against Fault-Induced Delayed Voltage Recovery in Power Systems
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DOI：10.1109/POWERTECH55446.2023.10202730.png)
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Abstract
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With the higher penetration of renewable energy sources and the various types of load devices connected to the grids, the Fault Induced Delayed Voltage Recovery (FIDVR) issue has become more prominent in power systems. Load shedding has long been used as an emergency control measure to address FIDVR. Battery Energy Storage Systems (BESSs) as new components are commonly integrated in power systems for voltage regulation and address different sources of uncertainty. This paper explores the feasibility and effectiveness of utility-scale BESSs to participate in event-driven emergency control of FIDVR through BESS shedding which is a more cost-effective strategy as compared to load shedding, and a hierarchical control strategy is proposed to optimally incorporate BESS and load shedding while ensuring the sufficient emergency control force for FIDVR mitigation. The BESS shedding strategy and the proposed method have been tested on the New England 39-bus system, demonstrating that BESS shedding can effectively improve fault-induced voltage performance and significantly save the economic losses due to load shedding.
Keywords:
Battery energy storage system
Emergency load shedding
Fault-induced delayed voltage recovery
Power system stability
Trajectory sensitivity analysis
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