Emission Constraint Optimal Power Flow using Differential Evolution

Objective of the power systems firm is to achieve the maximum profit and customer goodwill by providing reliable and quality power supply. This power system operation problem is solved by Optimal Power Flow (OPF). It gives requirement of operating states which satisfy the objective of the firm. Thermal power plants are the main source of power generation. Fuel cost of these power plants has to minimize for better profit at the same time it should satisfy system load demand, real, reactive power limit, voltage limit, power transmission limit and other limitations. For generation cost minimization Economic Load Dispatch (ELD) and Optimal Power Flow (OPF) was developed. When cost is the single objective, the power generation may pollute the environment. Thermal electric power could not be generated without pollution but this pollution can be reduced for the sake of good and healthy atmospheric condition. Differential Evolution (DE) algorithm is used in this paper to solve Emission Constraint Optimal Power Flow problem. Standard IEEE 30 bus, power system having 6 thermal power plants, is considered to validate the simulation.