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首页> 外文期刊>Electric power systems research >An improved algorithm for fault detection and location in multi-terminal transmission lines based on wavelet correlation modes
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An improved algorithm for fault detection and location in multi-terminal transmission lines based on wavelet correlation modes

机译：基于小波相关模式的多终端输电线路故障检测与位置的改进算法

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This paper proposes a new time-domain method for fault detection and location in alternating current multi terminal transmission lines based on wavelet analysis called wavelet correlation modes. Power system protection of multi-terminal transmission lines is a complex task because the infeed effect may affect its performance. The proposed algorithm based on one-terminal measurements enhances the detection time and diminishes the error of the fault location. This approach suits the protection scheme to attain reliable and accurate performance when any fault type is presented at different locations along the transmission line. The applicability of this proposal is validated under different fault scenarios and compared against conventional protection algorithms. The proposed algorithm is implemented in MATLAB software, and all simulations are conducted in the Alternative Transients Program of the Electromagnetic Transients Program (ATP/EMTP) software. The presented results confirm the main advantages of this approach. The new introduced method is tested under different mother wavelets to estimate the fault location.
机译：本文提出了一种新的时域方法，用于基于小波相关模式的小波分析的交流多终端传输线的故障检测和位置的新时域方法。电源系统保护多终端传输线是一个复杂的任务，因为进给效果可能会影响其性能。基于单终端测量的所提出的算法增强了检测时间，并减少了故障位置的错误。当沿传输线的不同位置呈现任何故障类型时，这种方法适用于保护方案以获得可靠和准确的性能。该提案的适用性在不同的故障场景下验证，并与传统保护算法进行比较。所提出的算法在MATLAB软件中实现，并且在电磁瞬变程序（ATP / EMTP）软件的替代瞬态程序中进行了所有模拟。所提出的结果证实了这种方法的主要优点。新引入的方法在不同的母小波下测试以估计故障位置。

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