Reliability cost/reliability worth assessment of station configurations

Station configuration design is an important task in power system planning. Failure events originating in a station can result in multiple outages of generators, lines or loads. Failures of breakers, transformers and busbar sections are major causes of multiple outages. This paper illustrates the effect of station originated failures on reliability and on the economic implications of reliability at different load buses in a composite generation and transmission system. An optimum design selection methodology which minimizes capital costs, maintenance costs and outage costs is presented in this paper. The minimization model proposed in this paper incorporates customer interruption costs due to station originated failures and recognizes the different customer compositions at the various system load buses