| 引用本文: | 刘顺桂,李勋,张宏钊,邹世明.一种采用时间判别法的混合线路故障行波定位方法[J].电力系统保护与控制,2017,45(1):41-46.[点击复制] |
| LIU Shungui,LI Xun,ZHANG Hongzhao,ZOU Shiming.A traveling wave fault location method of hybrid line using time discrimination[J].Power System Protection and Control,2017,45(1):41-46[点击复制] |
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| 摘要: |
| 为解决三段式混合线路故障测距问题，在分析混合线路行波传播特性的基础上，提出一种采用时间判别法的混合线路故障行波测距方法。首先，假定故障发生路段，利用故障暂态行波到达双端母线测量端的时间差值来推算出故障暂态行波在该路段内传播到线路两侧的时间差值。然后，通过该时间差值与故障发生在该线路首端和末端的时间差值进行比较，选出满足条件的时间差值并结合双端原理给出测距结果。PSCAD仿真结果表明，采用时间判别法的混合线路故障行波测距方法可以准确、可靠地给出测距结果。 |
| 关键词: 混合线路 行波 传播特性 双端原理 故障测距 |
| DOI：10.7667/PSPC160003 |
| 投稿时间：2016-01-04修订日期：2016-03-07 |
| 基金项目: |
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| A traveling wave fault location method of hybrid line using time discrimination |
| LIU Shungui,LI Xun,ZHANG Hongzhao,ZOU Shiming |
(Shenzhen Power Supply Co., Ltd., Shenzhen 518048, China;College of Electrical and Information Engineering,
Changsha University of Science and Technology, Changsha 410114, China) |
| Abstract: |
| In order to solve the fault location problem of the three-stage hybrid line, a traveling wave fault location method with time discrimination is proposed by analyzing the traveling wave propagation characteristics of the hybrid line. Firstly, the fault section is assumed and the time errors of the fault transient traveling wave are calculated using the time errors that the fault transient traveling wave reached the end of the bus terminal. Then, the time errors are selected that satisfied conditions and the results are given with the double-ended method by comparing this time errors with the time errors that the fault occurred on the first and the end of the line. The PSCAD simulation shows that the proposed traveling wave fault location method of hybrid line with time discrimination can give an accurate and reliable result. |
| Key words: hybrid line traveling wave propagation characteristic double-ended method fault location |
