A new model approach of electrical cyber physical systems considering cyber security

摘要

The integration of modern computing and advanced communication technologies with power grids has led to the emergence of electrical cyber physical systems (ECPSs). However, with the massive applications of communication technologies, power grids are becoming more vulnerable to cyber attacks, and there is no general model for analyzing the influence of such attacks. This paper focuses on modeling ECPSs considering cyber security. A multiple characteristic association (MCA) approach is proposed for analyzing cascading failures and cyber attacks based on the DC power flow model. It can comprehensively and qualitatively formulate the characteristics of power grids, communication facilities, and their interdependent relationships. The proposed model approach has good expansibility when analyzing the mechanism and impacts of cyber attacks. Three possible cyber attack scenarios (denial-of-service attack, uplink spoofing attack, and downlink spoofing attack) are qualitatively studied. Simulation results with IEEE systems verify that cyber attacks happening on information uplinks or downlinks have different impacts on power grids. (c) 2018 Institute of Electrical Engineers of Japan. Published by John Wiley & Sons, Inc.