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Using Current Traveling Waves to Implement Directional Elements in Parallel Lines

机译:使用电流行驶波以平行线路实现方向元素

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摘要

A traveling wave-based directional element based on only current signals for parallel transmission lines is presented in this paper. With the current waveform samples captured in one-terminal of both parallel circuits, the direction of the first fault-induced traveling waves is identified. Therefore, by using two directional elements, one at each transmission line end, and applying a permissive overreaching transfer trip scheme through a communication channel in conjunction with an appropriate overcurrent supervision, it is possible to classify faults as internal or external from the monitored transmission line, without the need to analyze voltage traveling waves. This classification (internal and external) and fault direction identification (forward or reverse) can improve the performance of other protection schemes and accelerate the trip decision without compromising the protection security and reliability.
机译:本文介绍了基于仅基于用于并联传输线的电流信号的行进波的定向元件。利用在两个并联电路的一个端子中捕获的电流波形样本,识别第一故障引起的行波的方向。因此,通过使用两个定向元件,一个在每个传输线端,并且通过通信信道应用允许允许的泛级传输跳闸方案,与适当的过电流监控,可以将故障分类为来自监视传输线的内部或外部,无需分析电压行波。此分类(内部和外部)和故障方向识别(前进或反向)可以提高其他保护方案的性能,并在不影响保护安全性和可靠性的情况下加速旅行决定。

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