Reliability Analysis of Cyber–Physical Systems: Case of the Substation Based on the IEC 61850 Standard in China

Ye Cai, Yu Chen, Yong Li, Yijia Cao and Xiangjun Zeng
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Ye Cai: Hunan Province 2011 Collaborative Innovation Center of Clean Energy and Smart Grid, Changsha University of science and technology, Changsha 410082, China
Yu Chen: College of Electrical and Information Engineering, Hunan University, Changsha 410082, China
Yong Li: College of Electrical and Information Engineering, Hunan University, Changsha 410082, China
Yijia Cao: Hunan Province 2011 Collaborative Innovation Center of Clean Energy and Smart Grid, Changsha University of science and technology, Changsha 410082, China
Xiangjun Zeng: Hunan Province 2011 Collaborative Innovation Center of Clean Energy and Smart Grid, Changsha University of science and technology, Changsha 410082, China

Energies, 2018, vol. 11, issue 10, 1-12

Abstract: With the increasing interaction between physical devices and communication components, the substation based on the IEC 61850 standard is a type of cyber–physical system. This paper proposes a reliability analysis method for substations with a cyber–physical interface matrix (CPIM). This method calculates the influences from both the physical device failures and the communication devices failures. Two indices, Probability of Load Curtailments and Expected Demand Not Supplied, are used in the reliability analysis. Given the simplified model of the practical substation based on the Chinese IEC 61850 standard, the results show that the substation system had a potential risk of cascading failure under the cyber–physical fusion trend, as the failure in cyber layer would increase the power loss of the whole system. The changing magnitude of Expected Demand Not Supplied increased significantly with increasing transmission delay rate of the process bus.

Keywords: cyber–physical system; intelligent substation; reliability analysis; cyber–physical interface matrix (CPIM) (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2018
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (4)

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