Impact of Cyber Failure on Cyber-Physical Distribution System Reliability

With the rapid increasing of electricity customers, the structure complexity of cyber-physical distribution system (CPDS) has grown exponentially. As a result, the accurate and fast CPDS reliability assessment technology has aroused extensive research in the academic community. Grid operators usually need quasi-real-time reliability assessment of CPDS when planning, operating and maintaining. For the purpose above, this paper proposes a high-performance reliability assessment method for CPDS based on continuous-time Markov chains (CTMC) considering impact of cyber failure, which can guaranteed assessment efficiency while maintaining computation accuracy. A medium voltage distribution system for RBTS Bus 5 is introduced as standard case to demonstrate the superiority of the proposed method indicating that the research in this paper has great engineering application value.