A Security Evaluation Method for Cyber Physical Distribution System Considering Influence of Information Failure

doi:10.11930/j.issn.1004-9649.202109039

Abstract

Abstract: Information failure events caused by natural faults or cyber attacks will affect the fault handling process of distribution network, leading to the expansion of power outage area and extension of power outage time. In order to quantify the impact of information failure on the security of the cyber physical distribution system, a CPS security evaluation framework of distribution network is firstly established, which clarifies the content and process of security evaluation. Secondly, a mathematical model is built for distribution network fault recovery with the minimized load loss power as the objective function, and the optimal switch action strategy under power failure is obtained. And then an analysis is made of the impact of information failure faults, which occur in the process of fault location, isolation and recovery, on the fault handling business, and the security evaluation indicators under the cyber-physical combination faults are calculated. Finally, the key combination faults set and the key power/information equipment which have the largest impact on the cyber physical distribution system are obtained. The simulation results based on a 62-node distribution network have verified the effectiveness and rationality of the proposed method.

Key words: distribution network, cyber physical system, information failure, security evaluation, fault recovery

LI Xiao, XU Jianbing, LI Manli, NI Ming, TONG Heqin. A Security Evaluation Method for Cyber Physical Distribution System Considering Influence of Information Failure[J]. Electric Power, 2022, 55(2): 73-81.

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URL: https://www.electricpower.com.cn/EN/10.11930/j.issn.1004-9649.202109039

https://www.electricpower.com.cn/EN/Y2022/V55/I2/73

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