海底观测网光电复合缆低阻抗故障识别及定位方法
Detection and Location of Low Impedance Fault for Fiber-optic/power Cable of Seafloor Observatory Network
投稿时间:2020-04-17  修订日期:2020-08-21
DOI:
中文关键词:  海底观测网  低阻抗故障识别  低阻抗故障定位  海缆故障
英文关键词:Seafloor Observatory Network  Low impedance fault identification  Low impedance fault location  Submarine cable fault?
基金项目:中国博士后科学基金
作者单位E-mail
冯迎宾 沈阳理工大学 781787793@qq.com 
于洋 沈阳理工大学 824721005@qq.com 
刘研菊 沈阳理工大学  
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中文摘要:
      针对海缆低阻抗故障识别与定位困难的问题,详细分析了在海底观测网故障定位模式下的分支单元模型及海缆故障模型,给出了岸基站与故障点之间的供电回路方程,求解故障点与岸基站之间的分支单元个数,从而识别发生故障的海缆。在故障海缆识别的基础上,依据海底观测网的拓扑结构列出岸基站与故障点之间的回路方程,求解故障点与分支单元之间的距离,实现故障点的定位。应用Simulink软件模拟了海底观测网供电网络模型,并对文中所提出的方法进行了仿真验证,试验结果表明:算法可以实现低阻抗故障的识别与定位,定位精度高,不受故障位置、故障点阻抗的影响。
英文摘要:
      In view of fault identification problem in submarine cable, branch unit model and submarine cable fault model under the fault location model of submarine observation network are analyzed. Power loop equations between shore station and fault point are given. The number of branch unit between the fault point and the shore station is solved. The number of branch unit is used to identify the faulty submarine cable. On the basis of faulty submarine cable identification, the loop equations between shore station and faulted point are established according to the topology of power system. The distance between the Branch Unit and faulted point is calculated to realize fault point positioning. Simulink software is used to simulate power supply model of seafloor observatory network in order to verify the proposed method. Simulation test results show that: this method can achieve low impedance faulted cable identification and location and has high fault location accuracy; it is not sensitive to fault location and fault resistance.□□□
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