Solution to non-convex economic power dispatch problems with generator constraints by charged system search algorithm

Abstract

Today along with an increase in the need for electrical energy, economic power dispatch problem has become one of the most important issues in the operation of power systems. In this study, the solution of the economic power dispatch problems with valve point effects and prohibited operating zones which consider ramp rate limits of the generators as well as the present power limits have been found by the charged system search (CSS) algorithm. In the solution of the problems, the transmission line losses have been calculated by using B loss matrices. The CSS method has been applied to the 15 generator test system in literature for economic power dispatch problem with prohibited operating zones and power generation limit and it has been applied to 30 bus 6 generator (IEEE) test system in literature for non-convex economic power dispatch problem with valve point effect under different constraints. The best solution values found for both of the test systems have been compared with the solution values found by the application of different methods in literature and the results have been discussed.