A new fault location technique for two- and three-terminal lines
A new fault location technique for two- and three-terminal lines
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DOI：
10.1109/61.108895
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发表时间：
1992
影响因子：
4.4
通讯作者：
A. Girgis;D. Hart;W. L. Peterson
中科院分区：
文献类型：
--
作者：
A. Girgis;D. Hart;W. L. Peterson
本文提出了一种双端和三端高压线路故障测距的计算方法。它基于线路端子处三相电流和电压60/50 Hz相量的数字计算。该方法与故障类型无关，对电源阻抗变化或故障电阻不敏感。此外，它考虑了同步误差采样的电流和电压波形在不同的线路终端。该方法可以在数字继电器操作之后在线使用，或者使用从数字瞬态记录设备传送到中央处理器的数据离线使用。作者从两端线开始解释原理，然后介绍三端线的技术。该技术首先进行了测试，从稳态故障分析程序获得的数据，以评估的收敛性，可观测性和唯一性的解决方案。然后，该技术进行了测试，使用EMPT产生的瞬态数据。试验结果表明，该方法具有较高的精度. >
A method for the computation of fault location in two- and three-terminal high voltage lines is presented. It is based on digital computation of the three-phase current and voltage 60/50 Hz phasors at the line terminals. The method is independent of fault type and insensitive to source impedance variation or fault resistance. Furthermore, it considers the synchronization errors in sampling the current and voltage waveforms at the different line terminals. The method can be used online following the operation of digital relays or offline using data transferred to a central processor from digital transient recording apparatus. The authors start with a two-terminal line to explain the principles and then present the technique for a three-terminal line. The technique was first tested using data obtained from a steady-state fault analysis program to evaluate the convergence, observability, and uniqueness of the solution. The technique was then tested using EMPT-generated transient data. The test results show the high accuracy of the technique. >