| 基于小波变换的T型线路故障测距新算法 |
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| 引用本文： | 周鑫,吕飞鹏,吴飞,张默霓.基于小波变换的T型线路故障测距新算法[J].继电器,2010,38(2):8-11,33. |
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| 作者姓名： | 周鑫 吕飞鹏 吴飞 张默霓 |
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| 作者单位： | 1.四川大学电气信息学院，四川 成都 610065;2.成都电业局，四川 成都 610100 |
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| 摘 要： | 针对当前多分支线路故障测距中方法较复杂，精确度不够高的不足，提出一种基于小波变换的T型输电线路精确故障定位算法。该算法利用电流行波到达T接线三端时间差与故障点距离T接线三端长度差的关系，只需初始行波电流信息即可确定故障支路，并对故障定位。在T节点附近不存在故障测距死区，且不受故障类型、分布电容、行波速度等因素的影响。大量Matlab仿真结果表明，该算法简单精确，能够满足故障定位的要求。
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| 关 键 词： | T接线 故障测距 时间差 距离差 初始电流暂态行波 小波分析 |
A new fault location method for T-connection transmission lines based on wavelet transform |
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| Affiliation: | 1.School of Electrical Engineering and Information;Sichuan University;Chengdu 610065;China;2.Chengdu Power Supply Company;Chengdu 610100;China |
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| Abstract: | Considering the deficiency of location faults on T-connection transmission lines,a new method based on wavelet transform is presented.In this paper,using the relationship between time difference and distance difference,the fault circuit is firstly identified by the information of the initial current transient traveling waves,and then the fault location is solved.This method does not have a dead area when fault occurs near the T-connection point,and is not affected by the speed of current transient and distr... |
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| Keywords: | T-connection fault location time difference distance difference initial current transient traveling waves wavelet analysis |
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