Reliability Analysis of Business in Grid Cyber Physical System Considering the Factors of Cyber Attacks

doi:10.3969/j.issn.1000－7229.2017.05.005

Abstract

Abstract: The deep integration and interaction between cyber space and power space is the main feature of grid cyber physical system (GCPS). According to the wide-area real-time protection and control business in smart grid, this paper firstly studies the way of the impacts of information business on the reliability of physical system, and establishes the model of business reliability associated with information equipment. On this basis, this paper introduces the reliability factor of equipment, proposes the reliability evaluation indexes for information equipment considering cyber attack, and presents a quantitative evaluation method of business reliability with combining analytic hierarchy process (AHP) and Bayesian network. Finally, through the case study, this paper identifies the weak link of the information system considering cyber attack and analyses the impact of information systems with different levels of redundancy on business reliability. Meanwhile, compared with the existing method, the result verifies the feasibility and rationality of the proposed method.

Key words: grid cyber physical system (GCPS), business reliability, cyber attack, analytic hierarchy process (AHP), Bayesian network

CLC Number:

TM 73

RU Yeqi, ZHOU Bin, WU Yibei, LI June, YUAN Kai, LIU Kaipei. Reliability Analysis of Business in Grid Cyber Physical System Considering the Factors of Cyber Attacks

[J]. Electric Power Construction, 2017, 38(5): 38-.

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