XUE Yu,LI Yueqiao,LIU Wenxia,et al.Risk Assessment of Cascading Failures in Flexible Interconnected Power Distribution System[J].Automation of Electric Power Systems,2021,45(8):112-119.
XUE Yu,LI Yueqiao,LIU Wenxia,et al.Risk Assessment of Cascading Failures in Flexible Interconnected Power Distribution System[J].Automation of Electric Power Systems,2021,45(8):112-119. DOI: 10.7500/AEPS20200505010.
Risk Assessment of Cascading Failures in Flexible Interconnected Power Distribution System
In order to analyze the cascading failure risk of flexible interconnected power distribution systems caused by hidden fault protection of flexible multi-state switch (FMS)
this paper first introduces its physical structure. Then
the steady-state characteristic
the transient characteristic of AC feeder failure
and FMS control and protection strategies are analyzed. The uncertain factors that cause the protection malfunctions are proposed and modeled. On this basis
the mechanism of cascading failure formation is analyzed
and the cascading failure risk indicators of flexible interconnected power distribution networks are established. The probabilistic indicators based on Monte Carlo method and the calculation methods based on optimal load shedding failure consequences are also proposed. Taking the modified IEEE 33-bus system as an example
the risk of cascading failures in the system is evaluated
and the influence of the failure location and the penetration rate of distributed generators on the risk is analyzed.
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