考虑线路长度变化的T型线路行波测距
发布时间：2018-10-30 21:05
【摘要】：针对现有的T型行波故障测距算法不能适应线路长度变化的问题,提出一种新的T型线路行波故障测距算法。该算法在T型线路故障测距方法的基础上,利用三端计算故障发生的绝对时刻或者波速的大小关系来判断故障是否发生在某一支路上,进而计算故障点的距离。考虑到线路长度变化的影响,给出了T节点附近故障时可能造成误判的距离范围。分支判别判据与测距表达式都充分用到了三端测量数据,并在一定程度上消除了弧垂和线路长度变化对其带来的误差。EMTP仿真结果表明,该方法正确,且克服了线路长度变化的影响。
[Abstract]:Aiming at the problem that the existing T-type traveling wave fault location algorithms can not adapt to the variation of line length, a new T-type traveling wave fault location algorithm is proposed. Based on the fault location method of T-type line, the algorithm calculates the absolute time of fault occurrence or the relationship of wave velocity between three terminals to determine whether the fault occurs on a certain road, and then calculates the distance of fault point. Considering the influence of the line length variation, the range of the possible misjudgment distance caused by the fault near T node is given. Both the branch discrimination criterion and the ranging expression are fully used in the three-terminal measurement data, and the error caused by the sag and the variation of the line length is eliminated to some extent. The EMTP simulation results show that the method is correct. It overcomes the influence of line length variation.
【作者单位】： 华北电力大学电气与电子工程学院;冀北电力公司检修分公司;
【基金】：中央高校基本科研业务费专项资金资助项目(2014xs74)~~
【分类号】：TM75
[Abstract]:Aiming at the problem that the existing T-type traveling wave fault location algorithms can not adapt to the variation of line length, a new T-type traveling wave fault location algorithm is proposed. Based on the fault location method of T-type line, the algorithm calculates the absolute time of fault occurrence or the relationship of wave velocity between three terminals to determine whether the fault occurs on a certain road, and then calculates the distance of fault point. Considering the influence of the line length variation, the range of the possible misjudgment distance caused by the fault near T node is given. Both the branch discrimination criterion and the ranging expression are fully used in the three-terminal measurement data, and the error caused by the sag and the variation of the line length is eliminated to some extent. The EMTP simulation results show that the method is correct. It overcomes the influence of line length variation.
【作者单位】： 华北电力大学电气与电子工程学院;冀北电力公司检修分公司;
【基金】：中央高校基本科研业务费专项资金资助项目(2014xs74)~~
【分类号】：TM75
【参考文献】
相关期刊论文 前10条
1 束洪春,司大军,葛耀中,陈学允;T型输电线路电弧故障测距时域方法研究[J];电工技术学报;2002年04期
2 董新洲,葛耀中,徐丙垠,陈平,李京;利用GPS的输电线路行波故障测距研究[J];电力系统自动化;1996年12期
3 梁军,麻常辉,，
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