Abstract This work demonstrates a superior local measurement-based ground fault selection and distance computation approach for a single and double circuit series compensated transmission lines. The proposed design was constructed to defeat the weaknesses of the usual protection approaches as influencing of mutual coupling, series capacitor, long outage time, one line operation mode, necessitating of synchronization, the unbalance load switching, the CT saturation, needing to know the status of circuit breakers, and the difficult fault initial condition as weak inception time, fault resistance loop, remote locations, and nearby locations. In this research, the decision data is exported from zero-sequence impedance relaying signals and positive sequence voltage relaying signal based imaginative Cos-Sin concept. To approve the suggested approach, widespread faults were simulated in the ATP program as well as the suggested approach is made in MATLAB program. The outcomes show that the proposed method is correct and overcomes the aforementioned weaknesses and difficulties.

中文翻译：

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单双回固定串联补偿输电线路增强接地故障选择与测距方法

摘要 这项工作展示了一种用于单回路和双回路串联补偿输电线路的优越的基于本地测量的接地故障选择和距离计算方法。所提出的设计旨在克服常用保护方法的弱点，如互耦影响、串联电容器、停电时间长、单线运行模式、需要同步、负载不平衡切换、CT饱和、需要了解状态断路器，以及困难的故障初始条件，如弱启动时间、故障电阻回路、远程位置和附近位置。在这项研究中，决策数据是从零序阻抗中继信号和基于想象的 Cos-Sin 概念的正序电压中继信号导出的。要批准建议的方法，在 ATP 程序中模拟了广泛的故障，并在 MATLAB 程序中提出了建议的方法。结果表明，所提出的方法是正确的，克服了上述弱点和困难。