Continuation Method for Dynamic Economic Load Dispatch with Emission Constraints

Abstract This paper presents a method for solving a dynamic economic load dispatch problem of electric power systems. Since the expected system load varies over a given time horizon, the sum of generator outputs must follows the system load subject to power-rate limits on generators. In order to solve the dynamic ELD problem, the continuation method is employed in this paper. It is shown that each generator output is expressed as a piecewise-linear function of a continuation parameter, and this fact enables us to obtain the optimal solution efficiently. Numerical tests for a model system indicate the validity and effectiveness of the proposed method.