电力系统保护与控制2011，Vol.39Issue(3)：78-83,118,7.
基于环流量的同杆四回输电线路故障选线
Fault line selection for four-parallel lines on same tower based on circulation currents
摘要
Abstract
In order to eliminate the coupling effects between four-parallel transmission lines, this paper proposes a new phase-mode transformation method for four-parallel transmission lines on same tower based on matrix transformation analysis by decoupling mutual inductances between different lines first and then decoupling mutual inductances between different phases. Based on boundary conditions of single-circuit line fault, the phase relationship between sequence circulation components are deduced for different circuit lines faults. And the characteristics that phase-angle difference between the circulation current components is 90° at least are used to propose a new method for fault line selection of four-parallel transmission lines on same tower. The proposed method is not affected by system impedances. A large number of simulations based on ATP/EMTP prove the proposed method's correctness ant effectiveness.This work is supported by National Natural Science Foundation of China (No. 50337010); The Crucial Field and Key Breakthrough Project in “Guangdong-Hongkong” (No. 2009498B3201); and The Fundamental Research Funds for the Central Universities (No. 2009ZM0080).关键词
故障选线/同杆四回线/环流量Key words
fault line selection/ EHV four-parallel lines on same tower/ circulation current分类
信息技术与安全科学引用本文复制引用
徐鹏,王钢,李海锋,黄俊凯,武霁阳..基于环流量的同杆四回输电线路故障选线[J].电力系统保护与控制,2011,39(3):78-83,118,7.基金项目
国家自然科学基金重点项目(50337010) （50337010）
粤港关键领域重点突破项目(2009498B3201) （2009498B3201）
华南理工大学中央高校基本科研业务费(2009ZM0080) （2009ZM0080）
