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首页> 外文期刊>Electric power systems research >A novel distributed unit transient protection algorithm using support vector machines
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A novel distributed unit transient protection algorithm using support vector machines

机译：支持向量机的新型分布式单元暂态保护算法

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摘要

Based on fault initial angle and transition resistance, a novel ultra-high-speed distributed unit transient protection algorithm is established to protect a busbar and a connected transmission line simultaneously for EHV (extra high voltage) substation through analysing the direction and instantaneous amplitude of the fault-generated high-frequency transient current by utilizing SVM (support vector machine). The fault direction was first judged during the process, and then the fault location was determined by employing different trained SVMs. In addition, the fault initial angle and transition resistance are imported into the input vector of SVMs, through which their adverse effects on the protection performance can be significantly eliminated. Moreover, the proposed algorithm extracts the fault transient information just relying on one transmission line connected to the busbar rather than overall feeders, thus simplifying the process while ensuring high reliability. Further, only typical fault samples instead of all samples are needed during the SVM training procedure, which makes it quite appropriate for practical projects. According to massive simulation results on a typical EHV transmission system on ATPDraw platform, the proposed algorithm can precisely determine whether the fault occurs within the protected busbar or on the protected line or outside the protected area. (C) 2015 Elsevier B.V. All rights reserved.
机译：基于故障初始角和过渡电阻，建立了一种新的超高速分布式单元暂态保护算法，通过分析超高压变电站的方向和瞬时幅值，同时保护超高压变电站的母线和连接的输电线路。利用支持向量机（SVM），故障产生的高频瞬态电流。在此过程中，首先要确定故障方向，然后通过使用不同的受过训练的SVM确定故障位置。此外，将故障初始角和过渡电阻导入SVM的输入向量中，从而可以消除它们对保护性能的不利影响。此外，所提出的算法仅依靠连接到母线的一条传输线而不是整个馈线来提取故障暂态信息，从而在确保高可靠性的同时简化了过程。此外，在SVM培训过程中仅需要典型故障样本，而不是所有样本，因此非常适合实际项目。根据在ATPDraw平台上的典型EHV传输系统上的大量仿真结果，所提出的算法可以精确地确定故障是发生在受保护母线内还是发生在受保护线路上或受保护区域之外。 （C）2015 Elsevier B.V.保留所有权利。

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  • 来源
    《Electric power systems research》 |2015年第6期|13-20|共8页
  • 作者

    Guo Zhenwei; Yao Jiangang; Jiang Yuechun; Zhu Xiangqian; Tan Zhewen; Wen Wu;

  • 作者单位

    Hunan Univ, Coll Elect & Informat Engn, Changsha 410082, Hunan, Peoples R China|Shaoyang Univ, Dept Elect Engn, Shaoyang, Peoples R China;

    Hunan Univ, Coll Elect & Informat Engn, Changsha 410082, Hunan, Peoples R China;

    Hunan Univ, Coll Elect & Informat Engn, Changsha 410082, Hunan, Peoples R China;

    Hunan Univ, Coll Elect & Informat Engn, Changsha 410082, Hunan, Peoples R China;

    Hunan Lishui River Basin Water Resources & Hydrop, Changsha, Hunan, Peoples R China;

    Hunan Univ, Coll Elect & Informat Engn, Changsha 410082, Hunan, Peoples R China;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Fault direction; Transition resistance; Fault initial angle; SVM; Busbar; Transmission line;

    机译：故障方向;过渡电阻;故障初始角度;SVM;母线;传输线;

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