马伟,吴靖,章玮明,丁冬,林森
MA Wei,WU Jing,ZHANG Weiming,DING Dong,LIN Sen

• 1:国网浙江省电力公司杭州供电公司

摘要(Abstract)：

鉴于快速、准确地定位输电线路上的故障点对保障电力系统的安全稳定运行至关重要,提出了一种基于多源信息的输电线路故障定位新方案。该方案借助区域集中式广域保护系统采集保护区域内的拓扑信息、网络参数和电流信息,当输电线路发生故障后,依据故障线路等值模型和叠加原理,通过电网中的节点注入电流和线路电流求解故障稳态模型中线路电流;在此基础上,通过定义线路平均故障距离实现了故障点定位。基于新英格兰10机39节点系统的仿真结果表明,本方案不受故障类型、过渡电阻、故障点位置等因素的影响,能够准确地定位保护区域内线路上的故障点。
Quick and accurate fault location of transmission line is key to ensure operation safety and stability of power system. This paper presents a new fault location scheme for transmission lines based on multi-source information. By dint of a regional centralized wide area protection system, the scheme collects topology information, network parameters and current information within the protection areas. Based on the equivalent model of fault transmission line and the superposition principle, line current in fault steady-state model is calculated by utilizing node injection current and line current in the network when fault occurs. On this basis, the fault location is realized by defining the average fault distance. Simulation results based on the New England10-machine 39-bus system show that the proposed scheme is not affected by factors such as fault type, transition resistance, fault location, and can accurately locate the fault point on the lines in the protection zone.

关键词(KeyWords)： 广域保护;多源信息;故障定位;过渡电阻;故障类型
wide-area protection;multi-source information;fault location;transition resistance;fault type

Abstract:

Keywords:

基金项目(Foundation):

作者(Author): 马伟,吴靖,章玮明,丁冬,林森
MA Wei,WU Jing,ZHANG Weiming,DING Dong,LIN Sen

DOI: 10.19585/j.zjdl.201708005

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