| 一种基于频率整合法的配电网单相接地故障测距技术 |
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| 引用本文： | 庞乐乐,李鹏飞.一种基于频率整合法的配电网单相接地故障测距技术[J].电测与仪表,2015,52(3):79-84. |
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| 作者姓名： | 庞乐乐 李鹏飞 |
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| 作者单位： | 中国矿业大学信息与电气工程学院,江苏徐州,221008 |
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| 摘 要： | 我国中压配电网绝大多数采用中性点非有效接地运行方式,故障类型以单相接地为主。文章首先对配网的单相接地故障过程进行了详细分析,理论上分析了基于故障暂态信号频率进行故障测距的可行性。为了提高测距的可靠性和灵敏性,利用prony算法对故障暂态零序电流信号进行了提取整合,提出了基于频率整合法的单端故障测距方法。最后通过PSCAD/EMTDC软件搭建了仿真线路模型,利用MATLAB进行数据分析和算法仿真,结果验证了文章的测距方法具有较理想的测距效果。
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| 关 键 词： | 中低压配电网 单相接地故障 故障测距 频率整合 prony |
| 收稿时间： | 2014/3/9 0:00:00 |
| 修稿时间： | 2014/3/9 0:00:00 |
A new fault location method based on frequency integration in distribution network |
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| Pang Le-le and LI Peng-fei.A new fault location method based on frequency integration in distribution network[J].Electrical Measurement & Instrumentation,2015,52(3):79-84. |
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| Authors: | Pang Le-le and LI Peng-fei |
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| Affiliation: | Pang Lele;Li Pengfei;College of Information and Electrical Engineering,China University of Mining and Technology; |
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| Abstract: | The majority of medium voltage distribution network is working on non-effectively grounded mode, and most of its fault type is single-phase ground fault. This thesis firstly analyzed the Single-phase ground fault process in detail, theoretically analyzed the feasibility of fault location based on signal frequency. To improve the reliability and sensitivity of this method, we use prony algorithm to extract the fault transient zero-sequence current signal and integrated, and proposed the fault location method based on frequency intergration. Finally we take simulations by PSCAD/EMTDC and MATLAB, verified accuracy and validity of procedures proposed above. |
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| Keywords: | medium and lower voltage distribution network single-phase ground fault fault location frequency integration prony |
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