利用回路新息相角差代数和识别拓扑结构变化  

Identification of topology change by algebraic sum of innovation angle differences in a loop

作　　者：周苏荃[1] 李昌[1] 柳焯[1] 

机构地区：[1]哈尔滨工业大学电气工程系,黑龙江哈尔滨150001

出　　处：《电力自动化设备》2002年第6期26-28,共3页Electric Power Automation Equipment

基　　金：国家自然科学基金资助项目 (5 0 1770 0 6 )

摘　　要：提出回路新息相角差代数和的概念。回路新息相角差代数和等于回路新息电势源的代数和。在新息图上计算各回路的新息相角差代数和 ,找出若干新息相角差代数和绝对值明显非零的回路 ,就是包含表明拓扑结构变化的电势源的回路。通过换树 ,将这些回路中公共的树支变换到连支上 ,从而确定电势源位置。这种直接计算电势源数值的方法 ,不仅能够区分拓扑结构变化和负荷突变 ,而且为拓扑结构变化识别提供了主要判据。文中给出了IEEE 5节点和 30节点的算例。The concept of innovation angle difference sum in a loop is proposed. The sum of innovation angle differences is equal to the sum of innovation voltage sources in a loop. Calculate the innovation angle difference sum of every loop in the innovation network and find out the loops in which the sum is over the threshold. These loops contain the voltage source indicating topology change. By changing the tree structure,the common tree branch of these loops is transformed into a link branch, and the voltage source is then identified. The way to directly calculate the value of voltage source can distinguish the topology structure change from sudden load change, and the important criterion is then provided. The IEEE?5 and IEEE?30 bus system examples are given.

关 键 词：识别 拓扑结构 电力系统 状态估计 新息图 新息相角差代数和 

分 类 号：TM711[电气工程—电力系统及自动化]