Transmission Constrained Production Cost Analysis in Power System Planning

This paper describes an application of linear programming to transmission constrained generation production cost analysis in power system planning. The approach allows a large electrical network representation to be studied with a detailed load and generation model. Hour by hour transmission element loadings are calculated and the unconstrained generation dispatch is adjusted to relieve any over- loads for simultaneous pre-contingency and post- contingency limits. A secure dispatch for all hours results from the repeated application of the methodology. The results include annual production costs and cost penalties reflecting the effects of hourly transmission constraints and summaries of overloaded and constraining transmission elements.