基于加权网络模型的电网潮流转移下危险线路识别 - 电网技术.pdf

第 36 卷 第 5 期 电 网 技 术 Vol. 36 No. 5 2012 年 5 月 Power System Technology May 2012 文章编号：1000-3673 （2012 ）05-0245-06 中图分类号：TM 712 文献标志码：A 学科代码：470·40 基于加权网络模型的电网潮流转移下 危险线路识别 沈瑞寒，刘涤尘，赵洁，廖清芬，杜振川 （武汉大学电气工程学院，湖北省 武汉市 430072 ） Weighted Network Model Based Recognition of Dangerous Lines Under Power Flow Transferring SHEN Ruihan, LIU Dichen, ZHAO Jie, LIAO Qingfen, DU Zhenchuan (School of Electrical Engineering, Wuhan University, Wuhan 430072, Hubei Province, China) ABSTRACT: In allusion to the incompleteness of existing 的非均质特性对潮流转移的影响，能有效识别出与发电机直 method to search the path by which power flow is transferred, a 接相连的变压器线路，所识别得到的电网潮流转移下的危险 weighted network model based method to recognize dangerous 线路更全面准确。基于多节点系统的仿真分析验证了该方法 line under power flow transferring is proposed. A 的正确性和有效性。 comprehensive analysis on topological structure of power grid 关键词：加权网络模型；潮流转移；危险线路；Floyd 算法； and the imbalanced power flow distribution is performed, on 最短传输路径；识别方法 this basis two kinds of weighted power grid models, in which the line reactances and the reciprocals of loading rates of 0 引言 transmission lines are taken as the edge weights respectively, 近年来，世界范围内发生了多次电力系统大停 are built; then the shortest transmission path of the two models are searched by Floyd algorithm, and the transmission lines 电事故，给社会经济带来了巨大损失。这些事故通 included in the search resu