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首页> 外文期刊>Simulation modelling practice and theory: International journal of the Federation of European Simulation Societies >A current independent method based on synchronized voltage measurement for fault location on transmission lines
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A current independent method based on synchronized voltage measurement for fault location on transmission lines

机译：基于同步电压测量的电流独立方法，用于传输线故障定位

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摘要

This paper presents a new method based on synchronized voltage measurement technique in order to identify the fault locations in two and three-terminal transmission lines. Due to common problems of current transformers in distance protection of power system and as result increasing cost and reduction of protection accuracy, proposed method is independent of current measurement and based on transmission line terminals voltages measurement. Pre-fault and post-fault voltages at both ends of the line are measured synchronously and used to calculate the fault location. Proposed method calculates the fault location using Thevenin model of faulted system and transforms the whole parameters to symmetric components. Using proposed technique, fault location can be calculated with a lower than 0.6% error without using current transformers. EMTP/ATP simulation results and mathematical analysis show that proposed fault location technique is independent of fault type, fault resistance, fault inception angle and loading angle of the transmission line.
机译：本文提出了一种基于同步电压测量技术的新方法，以识别两端和三端传输线的故障位置。由于电流互感器在电力系统距离保护中普遍存在的问题，导致成本增加和保护精度降低，因此该方法独立于电流测量，而是基于传输线端子电压的测量。同步测量线路两端的故障前和故障后电压，并将其用于计算故障位置。提出的方法使用故障系统的戴维南模型计算故障位置，并将整个参数转换为对称分量。使用提出的技术，可以在不使用电流互感器的情况下以低于0.6％的误差计算故障位置。 EMTP / ATP仿真结果和数学分析表明，所提出的故障定位技术与故障类型，故障电阻，故障起始角和传输线的加载角无关。

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