| 引用本文: | 张慧芬,张帆,潘贞存.基于注入信号法的配电网单相接地故障自动定位算法[J].电力自动化设备,2008,(6): |
| .Automatic fault locating algorithm based on signal injection method for distribution system[J].Electric Power Automation Equipment,2008,(6): |
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| 摘要: |
| 提出基于注入信号法的自动故障定位算法,以安装在馈线上的注入信号探测器为节点形成馈线的网络描述矩阵L,上传的注入信号探测信息形成故障信息矩阵G,G和L经过运算得到故障判定矩阵P。根据粗糙集理论,以故障馈线上的注入信号探测器为研究论域和条件属性,根据P形成故障判定信息表,用可辨识矩阵约简故障判定信息表得到核属性集合,核属性集合中的元素对应检测到注入信号电流的探测器,从而找到故障所在区段。该算法与故障馈线是否有分支无关,并提出了注入信号信息不完备时的解决方法。实际工程的成功应用证明了该算法的有效性。 |
| 关键词: 配电网,单相接地故障,定位,注入信号法 |
| DOI： |
| 分类号:TM86 |
| 基金项目: |
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| Automatic fault locating algorithm based on signal injection method for distribution system |
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ZHANG Huifen ZHANG Fan PAN Zhencun
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| Abstract: |
| An automatic fault locating algorithm based on the signal injection method is proposed,which takes the signal detectors fixed on the feeders as nodes to form the feeder-network describing matrix L and receives the upstream detected information to form the faulty information matrix G.The fault judgment matrix P is calculated by the operation of G and L.According to rough sets theory,the detectors on the faulty feeder are taken as the study domain and condition attribute.Based on the fault judgment matrix P,the fault information table is set,which is then simplified by the discriminable matrix to form the kernel attribute set.The elements of the kernel attribute set correspond to the signal detectors,according to which the faulty section is determined.This algorithm can be applied to feeders with or without branches.A solution to the case of incomplete signal information is given.The effectiveness of this algorithm is demonstrated by its successful applications on site. |
| Key words: distribution system,single-phase grounding fault,locating,signal injection method |
