论文标题
基于事实的传输中故障区检测距离中继的数据挖掘
Data-mining for Fault-Zone Detection of Distance Relay in FACTS-Based Transmission
论文作者
论文摘要
在这项研究中，分析了基于事实的传输线中距离中继的断层区检测问题。传输线上的事实设备的存在，当它们包含在断层区域中时，从距离继电器的角度将其包含在断层区域中，从而通过更改继电器所见的阻抗来确定故障的确切位置，从而导致不同的问题。这些变化的程度取决于事实设备已设置的参数。为了解决与这些补偿器相关的问题，已经使用了两种用于分离和分析三线电流的工具，从故障实例的继电器角度来看。小波变换用于将三线电流的高频组件分开，并且使用支持向量机（使用用于多级使用方法的方法）将故障位置分类为距离继电器的三个保护区域。此外，为了研究TCSC位置对距离继电器故障区检测的影响，两个位置，其中一个位置为线长的五十％，另一个在线长的75％中被认为是确认该方法的两种情况。模拟表明此方法有效地保护基于事实的传输线。
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.
