The application of saturation memetic algorithm in economic load dispatch

Jianguo Wang¹, Cong Cong², Xuhua Qing³, Xiao Han⁴ 

¹School of Automation Engineering, Northeast Dianli University, Jilin, China

²School of Control and Computer Engineering, North China Electric Power University, Beijing, China

³Jilin Electric Power Research Institute, Jilin, China

⁴College of Information Engineering, Northeast Dianli University, Jilin, China

To solve a nonlinear constrained economic load dispatch (ELD) problem in which the minimized generation cost is taken as objective and valve point effect of thermal units and operation constraints of power grid are taken into account. A saturation memetic algorithm was presented. To avoid the blindness in the search by the proposed using saturation increase efficiency and using adaptive penalty function to deal constraints. Calculation results of 3-machine system verify the effectiveness of the proposed algorithm. Compared with the other existing techniques, the proposed algorithm has been found to perform better. This method seems to be a promising alternative approach for solving the ELD problems in practical power system.