Dynamic Bayesian Network based Reliability Evaluation of Supervision and Control System in Smart Grids

Based on analysis of operating mechanism of smart substation supervision and control system (SSCS), Dynamic Bayesian Network (DBN) was introduced to evaluate the reliability of SSCS. First, function of SSCS was divided into three types, and corresponding functional reliability block diagrams (RBD) were established. Secondly, the DBN model and its solution of SSCS were implemented based on the functional RBD. Finally, a study case was presented to demonstrate the effectiveness of the proposed method. The results show that dynamic characteristics of SSCS could be well described by DBN and hence provide reference for the system configuration optimization, and fault diagnoses.