计算机工程与应用
計算機工程與應用
계산궤공정여응용
Computer Engineering and Applications
2015年
20期
227-233
,共7页
电力系统%经济分配%阀点效应%改进的教与学优化算法
電力繫統%經濟分配%閥點效應%改進的教與學優化算法
전력계통%경제분배%벌점효응%개진적교여학우화산법
power system%economic dispatch%valve-point effects%modified Teaching-Learning-Based Optimization algo-rithm(CTLBO)
经济分配（ED）对于电力系统的节能至关重要，适当的分配方法可以为电厂节约巨额生产成本，然而阀点效应使得实际ED问题呈现出不光滑和非凸的特性，导致一些经典的优化算法和启发式算法无法在合理时间内发现最优解。提出一种新的改进教与学优化算法来求解计及阀点效应的经济分配问题，并采用一种新的修正策略取代罚函数法来处理约束条件。为了验证新算法的有效性和鲁棒性，选取典型的benchmark函数和ED实例进行仿真计算，结果表明与其他代表性算法相比，该方法求解精度高、收敛速度快，为计及阀点效应的经济分配问题求解提供了一条新途径。
經濟分配（ED）對于電力繫統的節能至關重要，適噹的分配方法可以為電廠節約巨額生產成本，然而閥點效應使得實際ED問題呈現齣不光滑和非凸的特性，導緻一些經典的優化算法和啟髮式算法無法在閤理時間內髮現最優解。提齣一種新的改進教與學優化算法來求解計及閥點效應的經濟分配問題，併採用一種新的脩正策略取代罰函數法來處理約束條件。為瞭驗證新算法的有效性和魯棒性，選取典型的benchmark函數和ED實例進行倣真計算，結果錶明與其他代錶性算法相比，該方法求解精度高、收斂速度快，為計及閥點效應的經濟分配問題求解提供瞭一條新途徑。
경제분배（ED）대우전력계통적절능지관중요，괄당적분배방법가이위전엄절약거액생산성본，연이벌점효응사득실제ED문제정현출불광활화비철적특성，도치일사경전적우화산법화계발식산법무법재합리시간내발현최우해。제출일충신적개진교여학우화산법래구해계급벌점효응적경제분배문제，병채용일충신적수정책략취대벌함수법래처리약속조건。위료험증신산법적유효성화로봉성，선취전형적benchmark함수화ED실례진행방진계산，결과표명여기타대표성산법상비，해방법구해정도고、수렴속도쾌，위계급벌점효응적경제분배문제구해제공료일조신도경。
Economic Dispatch(ED)plays an important role in energy saving of power systems because a proper sched-ule 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 algo-rithm(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 compari-son shows that the proposed method has better accuracy and converge rate and provides a new way to solve ED problem with valve-point effects.
