COMBINED ECONOMIC EMISSION DISPATCH USING OPTIM –TOOL

Abstract

Combined economic emission dispatch (CEED) problem is to schedule the committed generating units’ outputs to meet the required load demand at minimum operating cost with minimum emission simultaneously. This multi-objective CEED problem is converted into a single objective function using a price penalty factor. In this paper, combined economic emission dispatch problem (CEED) problem has been formulated using price penalty factor and solving the problem using GA toolbox of MATLAB R2008b. The multi-objective optimization problem is solved using optimization tool by means of assigning a price penalty factor to the emission function. This method makes it possible to combine the two objective functions into a single objective one. In the proposed method, price penalty factor is calculated and by calculating the value of hi with the described method and MATLAB OPTIMTOOL program is run for each value hi. The m-files for constraint function and objective function are written to execute the program in OPTIMTOOL in MATLAB. The feasibility of the proposed approach is demonstrated for two different power systems, six generators unit and eleven generators units for 500-2500 MW loads and compared with other methods as particle swarm optimization(PSO), differential evolution(DE), -iteration, recursive(RM) and simplified recursive method(SRM) for given systems .Data for six generators unit and eleven generators unit are taken from Scientific Research and Essays, Ugur Guvenc and Electric Power Components and Systems, R. Balamurugan , S. Subramanian. The study results show that the proposed approach is more efficient in finding higher quality solutions in CEED problems. Software used: MATLAB 7.6.0