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arXiv 2003.04891eess.SP
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基于FACTS的输电线路距离保护故障区域检测的数据挖掘

Data-mining for Fault-Zone Detection of Distance Relay in FACTS-Based Transmission

Nima Salek Gilani, Mohammad Tavakoli Bina, Fatemeh Rahmani, Mahmood Hosseini Imani

备注：
6 pages, 1 figure, 11 tables, To appear in the XIV, 2020 IEEE Texas Power and Energy Conference (TPEC), 6-7 February, 2020, Texas, U.S.A
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摘要：

在这项研究中，距离保护的故障区域检测在FACTS为基础的输电线路的问题进行了分析。从距离继电器的角度来看，当输电线路上的FACTS设备被包括在故障区中时，它们的存在会在通过改变继电器所看到的阻抗来确定故障的确切位置时引起不同的问题。这些变化的程度取决于FACTS设备中设置的参数。为了解决与这些补偿器相关的问题，从故障情况下继电器的角度出发，利用了两种用于分离和分析三线电流的仪器。利用小波变换分离三相电流的高频分量，利用支持向量机（支持向量机多类使用的方法）将故障测距划分为距离保护的3个保护区域。此外，TCSC的位置上的距离继电器的故障区域检测的影响，两个地方，一个在百分之五十的线路长度和另一个在百分之七十五的线路长度，被认为是两个场景的确认所提出的方法。仿真结果表明，该方法在基于FACTS的输电线路保护中是有效的。

英文摘要：

In this study, the problem of fault zone detection of distance relaying in FACTS-based transmission lines is analyzed. Existence of FACTS devices on the transmission line, when they are included in the fault zone, from the distance relay point of view, causes different problems in determining the exact location of the fault by changing the impedance seen by the relay. The extent of these changes depends on the parameters that have been set in FACTS devices. To solve the problem associated with these compensators, two instruments for separation and analysis of three-line currents, from the relay point of view at fault instance, have been utilized. The wavelet transform was used to separate the high-frequency components of the three-line currents, and the support vector machine (using methods for multi-class usage) was used for classification of fault location into three protection regions of distance relay. Besides, to investigate the effects of TCSC location on fault zone detection of distance relay, two places, one in fifty percent of line length and the other in seventy-five percent of line length, have been considered as two scenarios for confirmation of the proposed method. Simulations indicate that this method is effective in the protection of FACTS-based transmission lines.

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