计及校正控制的安全约束最优潮流的奔德斯分解算法  

Benders Decomposition Algorithm for Corrective Security-constrained Optimal Power Flow

作　　者：钟世民[1] 韩学山[1] 刘道伟[1] 王孟夏[1] 

机构地区：[1]山东大学电气工程学院,山东省济南市250061

出　　处：《中国电机工程学报》2011年第1期65-71,共7页Proceedings of the CSEE

基　　金：国家自然科学基金项目(50377021;50677036);山东省自然科学基金项目(Y2008F19)~~

摘　　要：针对电力系统调度、规划、检修及风险评估中反复涉及的校正控制安全约束最优潮流的求解问题,在深入机制分析基础上,提出一种基于奔德斯(Benders)分解与协调的模型和算法,使复杂大电网的求解得以进行。该模型和算法的主要贡献体现在:对正常状态下的最优潮流问题(也称主问题),基于电网关键元件规律特性的变动形成有效约束,以提高其求解效率;对预想事件(也称子问题)集,基于处于主导地位预想事件概念的有效筛选方法,使子问题数显著减少。由此,借用奔德斯分解的处理思想,实现主问题与子问题间的协调机制。最后以IEEE 30节点标准系统以及山东电网445节点实际系统作为算例,对该算法进行可行性、有效性等验证。To solve the corrective security-constrained optimal power flow problem which is repeatedly involved in power system operation and economic dispatch,a practical approach based on Benders decomposition was proposed.So that the solution of complex and large power systems can be carried out.The approach is mainly reflected in： aiming at the optimal power flow problem under pre-contingency（also known as the Benders master problem）,creates effective restraints based on the change characteristics of the key components of power system in order to improve the efficiency of its solution;for the post contingency（also called sub-problem） set,uses a contingency filtering method which can select the dominat contingencies,to reduce the number of sub-problems.As a result,using Benders decomposition algorithm realizes the coordination mechanism between the master problem and the sub-problems.In the end,the IEEE 30-bus system and the Shandong power grid 445-bus system demonstrates the feasibility and practicality of the proposed approach.

关 键 词：电力系统 最优潮流 校正控制 事件筛选 奔德斯分解 

分 类 号：TM71[电气工程—电力系统及自动化]