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首页> 外文期刊>IEEE systems journal >Wide-Area Backup Protection Scheme for Transmission Lines Considering Cross-Country and Evolving Faults
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Wide-Area Backup Protection Scheme for Transmission Lines Considering Cross-Country and Evolving Faults

机译：考虑越野和不断发展的故障的输电线路广域备用保护方案

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摘要

Wide-area fault detection and location for cross-country and evolving faults have not been discussed before in the open literature. This paper presents an innovative wide-area backup protection scheme for untransposed transmission lines considering cross-country and evolving faults. Synchronized voltages and currents measurements in the phase domain are used for fault detection and location. The proposed scheme can distinguish transmission line faults from other external faults or different operating conditions. The faulty line is correctly identified, and the locations of all fault types including cross-country and evolving faults are estimated precisely. The proposed scheme is investigated under different fault locations, fault resistances, fault types, and fault inception angles. In addition, the influence of transmission line parameter errors and synchronization errors on the proposed scheme is investigated. Extensive simulation studies are applied to New England 39-bus test system, and the simulation results prove that the proposed scheme yields better performance for all simulated cases.
机译：以前在公开文献中尚未讨论过越野和不断发展的断层的广域故障检测和定位。本文提出了一种创新的广域备用保护方案，该方案适用于考虑越野和不断发展的故障的未换位输电线路。相域中的同步电压和电流测量用于故障检测和定位。所提出的方案可以将传输线故障与其他外部故障或不同的工作条件区分开。可以正确识别故障线，并准确估算所有故障类型的位置，包括越野和不断发展的故障。在不同的故障位置，故障电阻，故障类型和故障起始角度下对提出的方案进行了研究。另外，研究了传输线参数误差和同步误差对所提方案的影响。对新英格兰39总线测试系统进行了广泛的仿真研究，仿真结果证明了该方案在所有仿真情况下均具有更好的性能。

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