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首页> 外文期刊>Electric power systems research >Transient-based fault identification algorithm using parametric models for meshed HVDC grids
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Transient-based fault identification algorithm using parametric models for meshed HVDC grids

机译：基于瞬态的故障识别算法，用于使用参数模型进行网状HVDC网格

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摘要

This paper addresses the problem of fault identification in meshed HVDC grids once an abnormal behavior has been detected. A parametric single-ended fault identification algorithm is proposed. The method is able to determine whether the line monitored by a relay is faulty or not using a very short observation window. When a fault is suspected, the proposed algorithm estimates the fault distance and impedance using a parametric model describing the voltage and current evolution just after the fault occurrence. This model combines phenomenological (knowledge-based) and behavioral (black-box) parts to represent the fault propagation and to account for ground effects and various losses. The identification of the faulty line is then based on the size of the confidence region of the obtained estimate. The performance of the algorithm for a three-node meshed grid is studied using Electro-Magnetic Transient (EMT) simulations. On the considered grid model, the current and voltage need to be observed during less than 0.2 ms to get a sufficiently accurate estimate of the fault characteristics and identify consistently the faulty line.
机译：一旦检测到异常行为，本文就网格化HVDC网格中的故障识别问题解决了。提出了参数单结束故障识别算法。该方法能够确定继电器监视的线路是否有故障或不使用非常短的观察窗口。当怀疑故障时，所提出的算法使用参数模型估计故障距离和阻抗，该参数模型在故障发生之后刚刚刚刚刚刚在故障发生之后的电压和当前演进。该模型将现象学（知识）和行为（黑盒）部分结合起来代表故障传播，并考虑地面效果和各种损耗。然后基于所获得的估计的置信区的尺寸来识别故障线。使用电磁瞬态（EMT）模拟研究了三节点网格网格算法的性能。在考虑的网格模型上，在小于0.2ms期间需要观察到的电流和电压，以获得足够精确的故障特性的估计并始终如一地识别故障线。

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  • 来源
    《Electric power systems research》 |2020年第8期|106387.1-106387.16|共16页
  • 作者

    Verrax P.; Bertinato A.; Kieffer M.; Raison B.;

  • 作者单位

    SuperGrid Inst 23 Rue Cyprian BP 1321 F-69611 Villeurbanne France|Univ Paris Sud Univ Paris Saclay Cent Supelec CNRS L2S F-91190 Gif Sur Yvette France;

    SuperGrid Inst 23 Rue Cyprian BP 1321 F-69611 Villeurbanne France;

    SuperGrid Inst 23 Rue Cyprian BP 1321 F-69611 Villeurbanne France|Univ Paris Sud Univ Paris Saclay Cent Supelec CNRS L2S F-91190 Gif Sur Yvette France;

    SuperGrid Inst 23 Rue Cyprian BP 1321 F-69611 Villeurbanne France|Univ Grenoble Alpes Inst Engn G2Elab Grenoble INP CNRS F-38000 Grenoble France;

  • 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

    HVDC; Multi-terminal; Protection; Fault identification; Parameter identification;

    机译：HVDC;多终端;保护;故障识别;参数识别;

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