基于节点不平衡功率的电力系统输电能力分析  

Analysis of Transmission Capacity of Power System Based on Node Imbalance Power

作　　者：孙建生[1] 王承民[1] 

机构地区：[1]上海交通大学电子信息与电气工程学院,上海200030

出　　处：《广东电力》2008年第11期18-21,共4页Guangdong Electric Power

摘　　要：通过节点不平衡功率概念的引入,将电网的最大传输能力问题描述成为一个最优潮流模型,改变了过去给定负荷增长方向的假设,使得到的计算结果更有实际意义。并以梯度最优潮流算法进行求解,在处理不等式约束时采用了罚函数方法,而惩罚因子的计算是通过拉格朗日函数的对偶性质来完成的,该方法经过IEEE-30节点系统的检验证明是非常有效的。By introducing the concept of node imbalance power, the problem of maximum transmission capacity of power network is described as an optimal power flow model, which changes the common practice of setting the direction of load increase, and makes the result more practical. The gradient optimal power flow method is used to solve the problem. The penalty function method is used to deal with the inequation constraints and the penalty factor is calculated with Lagrange dual theory. The case study on an IEEE-30 node system proves the efficiency of the method.

关 键 词：最大传输能力 节点不平衡功率 最优潮流 对偶 

分 类 号：TM744[电气工程—电力系统及自动化]