Two-stage numerical algorithm for distance protection, fault location and arcing faults recognition
Two-stage numerical algorithm for distance protection, fault location and arcing faults recognition
复制标题
距离保护、故障定位和电弧故障识别的两级数值算法
DOI：
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发表时间：
2006
期刊：
影响因子：
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通讯作者：
V. Terzija
中科院分区：
文献类型：
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作者：
Z. Radojevic;V. Terzija
本文提出了一种新的两阶段数值算法，用于故障距离计算和电弧故障识别。第一算法阶段用于故障距离计算。故障距离的计算从基频相电压和电流相量，从而利用正和零序阻抗的线路作为输入参数。第二算法阶段用于电弧电压幅值计算。它利用在第一算法阶段计算的故障距离以及终端相电压和线电流相量的三次谐波，分别。根据电弧电压幅值的计算值，可以判断故障是瞬时性电弧故障还是永久性无弧故障。算法执行所需的相量通过使用离散傅立叶技术计算。本文对最常见的单相接地故障给出了解决方法。通过计算机模拟和真实的现场数据处理，给出了算法检验的结果。
In this paper, a novel two-stage numerical algorithm devoted to fault distance calculation and arcing faults recognition is presented. The first algorithm stage serves for the fault distance calculation. The fault distance is calculated from the fundamental frequency phase voltages and current phasors, thus utilizing the positive- and the zero-sequence impedances of the line as input parameters. The second algorithm stage serves for the arc voltage amplitude calculation. It utilizes the fault distance calculated in the first algorithm stage as well as the third harmonics of the terminal phase voltage and line current phasors, respectively. From the calculated value of arc voltage amplitude it can be determined whether the fault is transient arcing fault or permanent arcless fault. The phasors needed for algorithm execution are calculated by using the Discrete Fourier Technique. In this paper, the solution for the most frequent phase-to-ground faults is given. The results of algorithm testing through computer simulation and real field data records processing are given.