Security Evaluation of Distribution Network CPS Considering Cyber-Physical Combinations for Anticipated Fault Screening

doi:10.11930/j.issn.1004-9649.201911139

Abstract

Abstract: With the rapid development of ICT technology and automation control technology, the distribution network has gradually advanced into a distribution network cyber-physical system (distribution network CPS) with highly coupling of cyber system and physical system. While supporting the stable operation of the physical system, the cyber system brings certain security risks to the distribution network CPS. Therefore, the cyber impact should be considered in assessment of the unitary physical anticipated faults. This paper proposes a security analysis and evaluation method for distribution network CPS considering cyber-physical combination anticipated fault screening. Firstly, based on the CPS structure of the distribution network, a distribution network CPS correlative matrix model is established, which can reflect the power-cyber coupling characteristics. Then the correlation between cyber fault and physical fault is analyzed, and an initial cyber-physical anticipated faults set is constructed according to topological correlation and business correlation. And then the key cyber-physical anticipated fault is selected according to the sorting of fault recovery rate. Finally, the security evaluation is carried out for the selected faults, using the distribution network CPS security evaluation indicators. The case study has verified the rationality and validity of the proposed method.

Key words: distribution network cyber physical system (distribution network CPS), correlative matrix, anticipated fault, information-physical combination

ZHOU Xia, YANG Zhou, NI Ming, BU Chengjie, LIN Husheng, LI Manli. Security Evaluation of Distribution Network CPS Considering Cyber-Physical Combinations for Anticipated Fault Screening[J]. Electric Power, 2020, 53(1): 40-48.

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URL: https://www.electricpower.com.cn/EN/10.11930/j.issn.1004-9649.201911139

https://www.electricpower.com.cn/EN/Y2020/V53/I1/40

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