Fault Location Method for Seafloor Observation Network Based on Multi-terminal Traveling Wave Time Difference

被引：0
|
作者：
Zeng X. [1 ]
Mao Y. [1 ]
Deng F. [1 ]
Li Y. [1 ]
机构：
[1] Hunan Province Key Laboratory of Smart Grids Operation and Control, Changsha University of Science and Technology, Changsha, 410114, Hunan Province
来源：
Dianwang Jishu/Power System Technology | 2019年 / 43卷 / 09期
基金：
中国国家自然科学基金; 国家重点研发计划;
关键词：
Fault location; Submarine cable; Submarine observation network; Time difference matrix; Traveling wave;
D O I：
10.13335/j.1000-3673.pst.2018.2688
中图分类号：
学科分类号：
摘要：
Currently, fault detection and location of submarine cable in seafloor observation network is affected by fault resistance, natural environment and climate. The seafloor observation network's submarine cable failure is difficult to detect and locate, thus bringing many obstacles to underwater maintenance. Aiming at the defects of current fault location methods in seafloor observation network, a fault location method based on multi-terminal traveling wave is proposed for the first time in this paper. Firstly, the fault line is determined with intelligent branch unit (BU), and the shortest transmission path of the initial fault traveling wave head is calculated with Floyd algorithm. Secondly, the submarine cable is divided into several equipartition sections, and the distances from each equipartition point to each line end point and connecting point are calculated. Then an initial traveling wave path matrix is constructed, and the reference traveling wave head arrival time difference matrix is established based on the traveling wave velocity. After the fault, a time difference matrix is established using the times the traveling wave heads arrive at the fault point, measured with the synchronous measuring device installed at the end of each line. Finally, the fault location is determined using the difference of the time difference matrix before and after the fault. PSCAD simulation proves that the proposed method is simple to implement and accurate in positioning, providing guarantee for safe and reliable operation of the submarine observation network power system. © 2019, Power System Technology Press. All right reserved.
引用
收藏
页码：3280 / 3287
页数：7
相关论文
共 29 条
  • [1] Dong X., Tang L., Shi S., Et al., Configuration scheme of transmission line protection for flexible HVDC grid, Power System Technology, 42, 6, pp. 1752-1759, (2018)
  • [2] Xue S., Qi J., Lian J., A novel protection principle based on timing logic for HVDC system, Power System Technology, 42, 9, pp. 2841-2848, (2018)
  • [3] Tang L., Dong X., Shi S., Et al., Principle and implementation of ultra-high-speed travelling wave based protection for transmission line of flexible HVDC grid, Power System Technology, 42, 10, pp. 3176-3186, (2018)
  • [4] He R., Hu Z., Li Y., Et al., Fault section location method for DG-DNs based on integer linear programming, Power System Technology, 42, 11, pp. 3684-3692, (2018)
  • [5] Deng F., Zeng X., Ma S., Et al., Research on wide area traveling wave fault location method based on distributed traveling wave detection, Power System Technology, 41, 4, pp. 1300-1310, (2017)
  • [6] Zhang L., Yang X., Wang L., Et al., Fault location of single-phase-to-ground in neutral point ungrounded system, Power System Technology, 41, 12, pp. 4069-4076, (2017)
  • [7] Howe B.M., Kirkham H., Vorperian V., Power system considerations for undersea observatories, IEEE Journal of Oceanic Engineering, 27, 2, pp. 267-274, (2002)
  • [8] Naidoo D., Ijumba N.M., A protection system for long HVDC transmission lines, 2005 IEEE Power Engineering Society Inaugural Conference and Exposition, pp. 150-155, (2005)
  • [9] Zhou F.L.H., Peng X., Yue J., Et al., Development of an undersea science node for cabled ocean observatories, 2011 Oceans Mts/Ieee Kona, pp. 1-4, (2011)
  • [10] Schneider K., Liu C.-C., McGinnis T., Et al., Real-time control and protection of the NEPTUNE power system, 2002 OCEANS MTS/IEEE, pp. 1799-1805, (2002)
123