GPS travelling wave fault locator systems: investigation into the anomalous measurements related to lightning strikes
GPS travelling wave fault locator systems: investigation into the anomalous measurements related to lightning strikes
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DOI：
10.1109/61.517474
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发表时间：
1996-07
影响因子：
4.4
通讯作者：
H. Lee;A. Mousa
中科院分区：
文献类型：
--
作者：
H. Lee;A. Mousa
一种基于行波原理的新型故障定位系统已经成功地开发并应用于BC Hydro的500 kV电网，该系统能够在一个塔跨（300 m）内定位电力线路上的故障。与基于阻抗测量的早期方案不同，其精度不受负载条件、高接地电阻和最显著的串联电容器组的影响。该系统使用来自全球定位系统（GPS）的精确定时信号测量故障产生的行波到达线路终端的时间。故障定位器在雷电相关故障上的运行经验表明，在大多数情况下都能获得高度准确的结果。在一些由闪电引起的干扰中，该系统给出了异常的测量结果。本文介绍了该系统的运行情况，总结了运行经验，并对观测到的异常测量值进行了解释。
A new fault location system based on the travelling wave principle and capable of locating faults on power lines to within /spl plusmn/one tower span (300 m) has been successfully developed and applied to BC Hydro's extensive 500 kV network. Unlike earlier schemes which are based on impedance measurements, its accuracy is not affected by load conditions, high grounding resistance and most notably series capacitor banks. This system measures the time of arrival of a fault-generated travelling wave at the line terminals using the precise timing signals from the Global Positioning System (GPS). Operating experience with the fault locator on lightning related faults indicated highly accurate results were obtained for the majority of the cases. In a few of the lightning-caused disturbances, the system gave anomalous measurements. This paper describes the operation of the system, summarizes the operating experience and explains the observed anomalous measurements.