Dynamic Economic Dispatch Solution Using Composite Cost Function

Abstract

This paper proposes using the composite cost function to solve the dynamic economic dispatch problem in power system operation. The dynamic economic dispatch must not only satisfy the system load demand and the spinning reserve capacity, but some practical operation constraints of generators, such as ramp rate limits are also considered in practical generator operation. The feasibility of the proposed composite cost function solution method is demonstrated on sample power system and it is compared with other stochastic methods in terms of solution quality and computation efficiency. The numerical simulation results showed that the proposed method was indeed capable of obtaining the higher quality solutions efficiently in dynamic economic dispatch problems