基于电流转移比例系数的复杂网络输电断面识别方法  

Identification Method of Key Transmission Section in Complex Power Grid Based on Current Transferring Ratio

作　　者：王紫琪[1] 和敬涵[1] 张大海[1] 陈泽龙 

机构地区：[1]电力系统保护与控制实验室(北京交通大学),北京市海淀区100044 [2]国网长春供电公司,吉林省长春市130000

出　　处：《电网技术》2017年第3期915-921,共7页Power System Technology

基　　金：国家自然科学基金项目(51277009)~~

摘　　要：输电断面的可靠识别对预防连锁过载跳闸具有重要意义。根据潮流转移的路径特征及电流特性,提出一种基于电流转移比例系数的复杂网络输电断面识别方法。构建电网拓扑模型及图论矩阵,并在此基础上简化系统网络;通过关联矩阵不定向搜索方法建立旁侧路径库,限定输电断面的识别范围;采用回路电流法快速求解复杂耦合网络中各线路电流转移比例系数;考虑潮流正向叠加及反向对消作用进行比例系数修正,并据此确定输电断面集合,有效避免了反向过载路径的遗漏。最后,将耦合系统、新英格兰10机39节点系统和IEEE 118节点系统的断面识别结果与仿真数据进行对比,验证了所提输电断面识别方法的准确性和有效性。Reliable identification of transmission section is important for avoiding cascading failures caused by transferring power flow in power systems. Considering characteristics of power flow transferring, this paper designed an identification method of transmission section in complex power grid based on current transferring ratio. Power network can be simplified based on theoretic topology and relation matrices. To reduce search scope of transmission sections, flow transferring path section is established with non-directional search method. Cyclic current method is used to get current transferring ratio in complex power grid. Considering influence of positive and negative currents, the ratio is corrected to avoid omission of reverse overloaded lines. At last, correctness and effectiveness of the proposed method were verified with simulations of a coupling system, New England 39-bus system and IEEE 118-bus system.

关 键 词：输电断面 耦合网络 旁侧通路 电流转移比例系数 潮流转移 

分 类 号：TM71[电气工程—电力系统及自动化]