Reliability assessment of cyber physical distribution systems including sequential scenario simulation correction and recovery resource decisions

Abstract With the deepening of research on smart grids, the distribution system has gradually evolved into a cyber‐physical distribution system (CPDS). The refined reliability modelling and assessment methods for CPDS are of great significance. This paper proposes an integrated reliability assessment framework combining distribution information system (DIS) performance analysis with sequential scenario correction. A DIS model is established. By mapping the performance of DIS fault location and isolation to the operational scenarios of the power distribution system (PDS), the impact of DIS performance on the interruption time of PDS can be quantified. A physical operational scenario simulation and correction method is proposed, which uses the quantified interruption time due to DIS impacts for the correction of PDS operational scenarios. Based on the topology, the distribution system is divided into regions, and an optimal decision model for recovery resources is designed and used to calculate reliability indicators. The improved CPDS reliability assessment results of the IEEE RTS BUS6 F4 bus system are presented and analysed, and the key factors affecting the reliability of CPDS are identified and discussed.