Analysis on Distribution Network Fault Location Method Based on Parallel Resistance Disturbed Signal Injection

被引：0
|
作者：
Qi Z. [1 ]
Zhuang S. [1 ]
Liu Z. [1 ]
Yao Z. [2 ]
Zhang Y. [2 ]
机构：
[1] School of Electrical and Electronic Engineering, North China Electric Power University, Beijing
[2] State Grid Beijing Electric Power Company, Beijing
来源：
Dianli Xitong Zidonghua/Automation of Electric Power Systems | 2018年 / 42卷 / 09期
关键词：
Disturbed signal; Fault location; Single-phase grounding fault; Small current grounding system;
D O I：
10.7500/AEPS20170817005
中图分类号：
学科分类号：
摘要：
The distribution network fault location based on parallel resistance disturbed signal injection is realized by tracking and diagnosing the disturbed signal. It has been widely used in distribution network fault location. However, in practical application, this method has the problem of uncertainty characteristics of the current variation, which causes the fault location device to misjudge. Therefore, this paper establishes the equivalent circuit of the small current grounding system, deeply studies the variation of the fault current after the disturbed signal injected through different non-faulty phases, and analyzes the influence of the load current and the grounding transition resistance. The theory of the effective fault location technology based on parallel resistance disturbed signal is demonstrated. It is proposed that the disturbed signal should be injected through the lagging phase of the fault phase in the ungrounded neutral sysytem or undercompensated arc-supperssion-coil-ground neutral system. The disturbed signal should be injected through the ahead phase of the fault phase in the overcompensated arc-suppression-coil-ground neutral system. The simulation results prove the correctness of the optimization method. © 2018 Automation of Electric Power Systems Press.
引用
收藏
页码：195 / 200
页数：5
相关论文
共 14 条
  • [1] Chen J., Qi Z., Yang Q., A line detection device for the non-solidly grounded system based on fuzzy sets, Automation of Electric Power Systems, 28, 8, pp. 88-91, (2005)
  • [2] Liu J., Zhang Z., Zhang X., Et al., Single phase to ground fault location based on distribution automation systems, Automation of Electric Power Systems, 41, 1, pp. 145-149, (2017)
  • [3] Liu J., Zhang X., Shen W., Et al., Performance testing of single phase to earth fault location for distribution network with neutral point non-effectively grounded systems, Automation of Electric Power Systems, 42, 1, pp. 138-143, (2018)
  • [4] Shu H., Tian X., Lyu L., Multi-measure based identification of flashover fault traveling wave and interference noise, Automation of Electric Power Systems, 41, 19, pp. 128-134, (2017)
  • [5] Li Z., Cheng Y., Wu L., Et al., Optimal placement of traveling wave fault location equipment based on wide area transmission path of initial wave head, Automation of Electric Power Systems, 41, 18, pp. 60-66, (2017)
  • [6] Xue Y., Li T., Li W., Et al., A novel method of transient analysis and faulty section location for single-phase earth fault in non-effectively earthed network, Automation of Electric Power Systems, 38, 23, pp. 101-107, (2014)
  • [7] Thukaram D., Khincha H.P., Vijaynarasimha H.P., Artificial neural network and support vector machine approach for locating faults in radial distribution systems, IEEE Transactions on Power Delivery, 20, 2, pp. 710-721, (2005)
  • [8] Qi Z., Zheng C., Yang Y., Research on method of single-phase-to-earth fault section location in neutral point resonant grounded system, Automation of Electric Power Systems, 34, 9, pp. 77-80, (2010)
  • [9] Zhang L., Xu B., Xue Y., Et al., Transient fault locating method based on line voltage and zero-mode current in non-solidly earthed network, Proceedings of the CSEE, 32, 13, pp. 110-115, (2012)
  • [10] Wang P., Chen B., Zhou H., Et al., Fault location in resonant grounded network by adaptive control of neutral-to-earth complex impedance, IEEE Transactions on Power Delivery, 33, 2, pp. 689-698, (2018)
12