适用于高压长距离同杆双回线的在线故障测距方法  

Online Fault Locating Suitable for High Voltage and Long Distance Same Tower Parallel Transmission Lines

作　　者：鲁文[1] 孙国城[1] 沈浩东[1] David TAO 

机构地区：[1]国网电力科学研究院/南京南瑞集团公司,江苏省南京市210003 [2]eCon Technologies Inc, Burnaby V5A3Y6, 加拿大

出　　处：《电力系统自动化》2011年第10期79-82,88,共5页Automation of Electric Power Systems

摘　　要：提出了一种适用于高压长距离同杆双回线的在线故障测距方法。该方法基于双回线单端电气量的阻抗模型,考虑分布参数对高压输电线路的影响,用积分法求解微分方程,用迭代法解决分布参数对故障定位影响的不确定性。利用实时数字仿真系统(RTDS)模拟各类故障并将输入量接入DPR-2E型故障录波测距装置。结果表明:算法正确,所需数据窗短,计算速度快,可在线使用。A new algorithm of online fault locating suitable for high voltage and long distance same-tower parallel transmission lines is proposed.Based on impedance model of single terminal parallel lines,the influence of distribute capacitance for high voltage and long distance parallel transmission lines is eliminated in the novel method.The solution of differential equation is obtained with integral way and the influence of distribute capacitance on uncertainty of fault locating is solved using iterative method.Simulation results which are obtained by using DPR-2E fault recorder and real time digital system（RTDS） simulator show that it is correct.The algorithm can be used online because it can calculate fast and only need short data window.

关 键 词：同杆双回线 故障测距 迭代法 积分法 

分 类 号：TM855[电气工程—高电压与绝缘技术]