关键词: 电力系统, 经济分配, 阀点效应, 改进的教与学优化算法

Abstract: Economic Dispatch （ED） plays an important role in energy saving of power systems because a proper schedule of load may save power plants amounts of production cost per year. However, valve loading effects change it into a non-smooth and non-convex optimization problem which challenges the traditional optimization techniques in finding the optimal solution in reasonable time. This paper proposes a new modified Teaching-Learning-Based Optimization algorithm （CTLBO） to solve the economic dispatch considering valve-point effect. In the solution of the ED by the proposed algorithm, a new repair procedure is also adopted instead of penalty function to address the constraints. The proposed CTLBO is examined on some benchmark functions and a typical case to illustrate its effectiveness and robustness. The results of experiment study are compared with some of the most recently published ED solution techniques. The comparison shows that the proposed method has better accuracy and converge rate and provides a new way to solve ED problem with valve-point effects.

Key words: power system, economic dispatch, valve-point effects, modified Teaching-Learning-Based Optimization algorithm（CTLBO）