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首页> 外文期刊>Bulletin of the Institute of Heat Engineering >A Relaying Scheme for Detection and Classification of Shunt Faults in Six-Phase Transmission System Based on DFT-FIS Approach
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A Relaying Scheme for Detection and Classification of Shunt Faults in Six-Phase Transmission System Based on DFT-FIS Approach

机译：基于DFT-FIS方法的六相输电线路分流故障检测与分类的中继方案

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摘要

Hitherto many schemes based on the fuzzy system have been protected by a three-phase transmission system, but not by a six-phase transmission system. This paper sets out a novel protection scheme based on DFT-FIS approach for detection/ classification of shunt faults in a six-phase transmission system. In this scheme, two separate DFT-FIS modules have been designed to detect the presence of fault in any of the six-phase(s) and to identify the presence of ground in the fault loop, thus classifying all 120 types of fault in a six-phase transmission line. The six-phase voltage and current signals are collected at one end of the transmission line only, thus circumvent dependence on a communication link for remote end data. A widerange of fault simulation studies were carried out in MATLAB/Simulink environment for all possible shunt fault combinations by varying fault locations, fault inception angle, fault resistance, short circuit capacity (SCC) of the source and at various fault conditions such as: close-in faults, remote-end faults, high resistance faults, including CT saturation. Furthermore, the relay operation time in fault detection/classification is less than one-cycle (<16.67ms) and since the scheme does not experience any malfunction it is deemed reliable and adaptable.
机译：迄今为止，许多基于模糊系统的方案都受到三相传输系统的保护，而不受六相传输系统的保护。提出了一种基于DFT-FIS方法的六相输电系统分流故障检测/分类保护方案。在该方案中，已设计了两个单独的DFT-FIS模块，以检测六相中任一相中是否存在故障，并识别故障回路中是否存在接地，从而将一个故障中的所有120种故障分类。六相传输线。六相电压和电流信号仅在传输线的一端收集，因此避免了依赖通信链路获取远端数据。在MATLAB / Simulink环境中，针对所有可能的并联故障组合，通过改变故障位置，故障起始角度，故障电阻，源的短路容量（SCC）以及在各种故障条件下（例如：关闭），进行了广泛的故障仿真研究。 -输入故障，远端故障，高电阻故障，包括CT饱和。此外，故障检测/分类中的继电器操作时间少于一个周期（<16.67ms），并且由于该方案没有任何故障，因此被认为是可靠且适应性强的。

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