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Power system vulnerability assessment considering Energy Storage Systems

Vulnerability assessment is one of the main issues for power system planning and operation. Recent research reveals that Energy Storage Systems (ESSs) have a great potential to be used to mitigate power system vulnerability. A vulnerability assessment is proposed in this paper to calculate the impact factors for power systems based on generator and line outages. A Bus Impact Severity (BIS) analysis is then designed and used to find the vulnerable buses in the power system. The buses with larger BIS values as defined in this paper can be considered as the better locations for ESS placement. Test results show that the ESS placement in the vulnerable buses can mitigate system vulnerability effectively.