计及阀点效应的电力系统经济运行方法  

Method for Economic Operation Problem in Power Systems With Valve Point Effect

作　　者：袁晓辉[1] 袁艳斌[2] 王乘[1] 

机构地区：[1]华中科技大学水电与数字化工程学院,武汉430074 [2]武汉理工大学资源与环境工程学院,武汉430071

出　　处：《电工技术学报》2005年第6期92-96,共5页Transactions of China Electrotechnical Society

基　　金：国家自然科学基金(50409010;50309013);博士后科学基金(2003033464)资助项目

摘　　要：动态经济调度在电力系统运行中占据重要作用,这是一个在时间和空间上相互耦合的复杂优化决策问题。当计及机组阀点效应后,该问题更是呈现为不光滑、非凸特性。本文提出一种沿连续两次迭代计算次梯度之差方向的空间扩张算法来解决动态经济调度问题,并采用自适应更新罚因子的不光滑精确罚函数处理约束条件。通过仿真计算,结果表明该方法求解精度高、收敛速度快,验证了此方法的可行性和有效性,从而为电力系统动态经济调度问题的求解提供了一条新途径。Dynamic economic dispatch plays important role in power systems operation and control. Coupling with space and time, it is a complicated optimal decision problem. It has non-smooth and nonconvex characteristic when generation unit valve point effect is taken into account. This paper proposes a new approach with space extension along the difference of two successive subgradients to solve dynamic economic dispatch. Constraints can be handled using non-smooth exact penalization method with self-adaptive updating penalty coefficient. The feasibility and validity of the new method is demonstrated for application example and the test results are compared with other methods reported. Simulation calculation shows that the proposed method performs better result in terms of solution's precision and convergence property, so it is provided a new tool for solving dynamic economic dispatch problems.

关 键 词：经济调度 阀点效应 电力系统 

分 类 号：TM715[电气工程—电力系统及自动化]