基于分布参数的同杆双回线跨线及接地故障单端定位方法

发布时间：2018-02-11 23:06

本文关键词： 同杆双回线故障定位函数分布参数跨线故障单端量　出处：《电网技术》2014年09期 　论文类型：期刊论文

【摘要】：提出一种考虑分布参数的同杆双回线跨线及接地故障单端定位方法。首先在考虑双回线线间耦合的分布参数线路模型中,借助同向零序补偿系数以及反向零序补偿系数,定义精确的补偿电压。然后,根据测量端反向序电流与故障处反向序电流相位的关系,推算故障处电压相位及幅值。最后,利用测量电压、电流以及推算故障处的电压构造故障定位函数,并通过求解相位突变点识别故障位置。仿真结果表明,该方法适用于多种跨线及接地故障,无需其他变电站的信息,且受故障位置、过渡电阻、相序排列等因素的影响小,定位精度高,易于实现。
[Abstract]:Put a cross line and the grounding fault of single terminal fault location method considering distributed parameter DLSP. Firstly, considering the distributed parameter line model of double circuit line coupling, with the same direction of zero sequence current compensation coefficient and reverse zero sequence current compensation coefficient, the compensation voltage definition. Then, according to the relationship between the measuring end reverse sequence current with the reverse phase sequence current at the fault point, the fault calculation of the phase and amplitude of voltage. Finally, the measurement of voltage, current and voltage calculation of fault location function of fault structure, and by solving the phase mutation identification of fault location. Simulation results show that this method is applicable to a variety of cross line and grounding fault, without other substation information, and the fault location, fault resistance, effect of phase sequence factors such as small, high precision, easy to implement.

【作者单位】：新能源电力系统国家重点实验室(华北电力大学);山西省电力公司电力科学研究院;
【基金】：国家重点基础研究发展计划项目(973项目)(2012CB215200) 国家自然科学基金项目(51277193,50907021) 中央高校基本科研业务费专项资金资助项目(2014ZZD02) 河北省自然科学基金项目(E2012502034)~~
【分类号】：TM862

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