Reliability Evaluation of Transmission Systems with Switching After Faults Approximations and a Computer Program

Approximation methods and a computer program are presented, to facilitate the reliability evaluation of large power systems. The approximations are based on an extension of the minimal-cut approach for computing reliability, to cover models that can account for switching after faults. The program can select the required "minimal-cut" failure states through an analysis of the failure effects in every state, and calculate the overall system reliability indices, if certain system failure criterial apply.