曾祥君;毛宇;邓丰;李越宇;

• 1:智能电网运行与控制湖南省重点实验室(长沙理工大学)

摘要(Abstract)：

目前海底观测网海缆故障检测定位受过渡电阻、自然环境与气候等多方面因素的影响,导致检测难度大、故障定位困难,为水下维修带来诸多困难。针对目前海底观测网故障定位存在的不足,论文首次提出了一种基于多端故障行波时差的海底观测网故障定位方法。首先,通过智能分支单元(branchunit,BU)确定故障线路,利用Floyd算法计算故障初始行波波头的最短传输路径;然后,将海缆等分为若干个等分点,通过海缆端点及连接点到各个等分点的距离建立行波初始路径矩阵,利用行波波速建立故障前的基准行波波头到达时差矩阵;故障后,利用安装在每条线路端点及连接点处的同步测量装置捕捉故障初始行波波头到达时间,建立故障后行波波头到达时差矩阵;最后,通过对比故障前、后行波波头到达时差矩阵的差异确定故障点准确位置。PSCAD仿真分析表明:所提方法实现简单、定位准确,为海底观测网电力系统安全可靠运行提供保障。

关键词(KeyWords)： 海底观测网;海缆;行波;故障定位;时差矩阵

Abstract:

Keywords:

基金项目(Foundation): 国家重点研发计划资助项目(2017YFB0902900);; 国家自然科学基金项目(51737002,51425701);; 湖南省自然科学基金青年项目(2019JJ50660);; 湖南省教育厅优秀青年项目(18B134)~~

作者(Author): 曾祥君;毛宇;邓丰;李越宇;

Email:

DOI: 10.13335/j.1000-3673.pst.2018.2688

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