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首页> 外文期刊>Electric Power Components and Systems >Distance Relaying Algorithm for a Line-to-ground Fault on Single Infeed Lines
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Distance Relaying Algorithm for a Line-to-ground Fault on Single Infeed Lines

机译：单进线对地故障的距离中继算法

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摘要

The work presented in this article addresses the problems encountered by the conventional digital distance relay used for the protection of transmission lines fed from one end. To observe its behavior during a high-resistance single line-to-ground fault, a laboratory prototype of a three-phase transmission line using equivalent power system components has been developed by the authors. Thereafter, a new digital distance relaying algorithm is presented for the compensation of errors produced by the conventional digital distance relay during a high-resistance single line-to-ground fault. The proposed algorithm is based on digital computation of impedance, which uses symmetrical components of three-phase currents and voltages measured at the local end only. The proposed algorithm has been tested using MATLAB/SIMULINK (The Math Works, Natick, Massachusetts, USA) software for a single line-to-ground fault considering wide variations in fault resistance, fault location, power factor, and short-circuit capacity of the source.
机译：本文介绍的工作解决了用于保护从一端馈入的传输线的常规数字距离继电器所遇到的问题。为了观察其在高电阻单线接地故障期间的行为，作者开发了使用等效电力系统组件的三相传输线的实验室原型。此后，提出了一种新的数字距离继电器算法，用于补偿传统的数字距离继电器在高电阻单线对地故障期间产生的误差。所提出的算法基于阻抗的数字计算，该算法仅使用三相电流和电压的对称分量在本地端测量。考虑到故障电阻，故障位置，功率因数和短路能力的较大差异，使用MATLAB / SIMULINK（美国马萨诸塞州纳提克市的Math Works公司）的MATLAB / SIMULINK软件对该算法进行了测试。来源。

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