Effect of Including Emissions in Economic Dispatch

Economic load dispatch is an important optimization task in power system. It is the process of allocating generation among the committed units such that constraints imposed are satisfied. There are three criteria in solving the ELD problem: minimizing the total generation cost, scheduling of generating units and minimizing the total emission cost. Emissions have an effect on the fuel cost of the generating system. In this paper, the Lambda Iteration Method is used to solve the fuel cost equation and the emission equation, that have been combined into a Combined Emission and Economic Dispatch equation. The equations are combined using weighting factors. The effect of emissions on the fuel cost have been studied. The values of weighting factors have an effect on the respective values of fuel cost and emissions of the system. The weighting factors are varied to see the corresponding change in fuel cost and emissions. The results are compared and put in tabular form.