贯通线故障定位的区间算法研究  

Study on the Interval Algorithm for Locating Fault of Railway Continuous Power Transmission Line

作　　者：徐志强[1] 李冰[1] 张海波[1] 周田华 张强[1] 

机构地区：[1]北京送变电公司,北京102401

出　　处：《铁道工程学报》2010年第7期64-68,共5页Journal of Railway Engineering Society

摘　　要：研究目的:铁路电力贯通线供电可靠性要求很高,出现几率较高的单相接地故障会造成供电中断,给行车安全带来隐患,该故障的准确诊断与快速切除方法是铁路维护部门亟待解决的一大技术难题。阻抗法和行波法故障定位的精度达不到故障快速切除的要求,本文依据贯通线分段式结构的特点和对故障处理的快速性要求,通过研究提出区间定位方法。研究结论:通过研究,运用区间分析法推导了集中参数区间算法、故障网络分解区间算法以及分布参数区间算法。结合实际线路模型进行了PSCAD仿真分析,验证了区间定位方法的可行性。为了进一步检验区间定位方法的工程实用性,依据3种算法在凯里至福泉段的贯通线上进行了现场模拟试验,试验结果完全满足工程应用的准确、快速性要求。理论计算和实际试验结果均表明提出的区间算法可以有效解决贯通线故障定位问题。Research purposes：High reliability of power supply is required for railway continuous power transmission line,however,the single-phase-to-ground fault often occurs on the lines,which can cause power supply interruption and bring the risk to the traffic safety.How to precisely diagnose and quickly eliminate the single-phase-to-ground fault has become a problem to be solved urgently for the railway departments.The accuracy of fault location can not meet the requirement of rapid sectioning the fault with the impedance method and traveling wave method.According to the structural characteristics of the railway continuous power transmission line and the requirements of the rapid sectioning the fault,the study is done on the method for the interval location.Research conclusions：Through the study,the lumped parameter interval algorithm,fault network decomposing interval algorithm and distributed parameter interval algorithm were deduced by using interval analysis method.The PSCAD simulation analysis was made for the actual transmission line model to verify the feasibility of interval location method.In order to further test its practicability in engineering,the field simulated tests were done with the three algorithms for railway continuous power transmission line from Kaili to Fuquan.The tested results fully met the requirements of precision and rapidity for fault location.Both the theoretical calculation and factual tests had shown that the using interval algorithm could effectively solve the problem of fault location railway continuous power transmission line.

关 键 词：贯通线 故障定位 区间数学 区间算法 

分 类 号：TM726.3[电气工程—电力系统及自动化]