• CSCD核心库收录期刊
  • 中文核心期刊
  • 中国科技核心期刊

ELECTRIC POWER CONSTRUCTION ›› 2022, Vol. 43 ›› Issue (2): 45-53.doi: 10.12204/j.issn.1000-7229.2022.02.006

• Smart Grid • Previous Articles     Next Articles

An Equivalent Decoupling Model for Fault Location in Complex Distribution Network with Distributed Generation

BAI Xingzhen1(), SONG Zhaoshan1(), GE Leijiao2(), ZHANG Bo3(), ZHU Ailian4(), NIU Feng5()   

  1. 1. School of Electrical and Engineering, Shandong University of Science and Technology, Qingdao 266590, Shandong Province, China
    2. Key Laboratory of Smart Grid of Ministry of Education(Tianjin University), Tianjin 300072, China
    3. 32654 PLA Troops, Jinan 250024, China
    4. Qingdao Longfa Thermal Company Limited, Qingdao 266317, Shandong Province, China
    5. State Key Laboratory of Reliability and Intelligence of Electrical Equipment (Hebei University of Technology), Tianjin 300130,China
  • Received:2021-04-29 Online:2022-02-01 Published:2022-03-24
  • Contact: GE Leijiao E-mail:xzbai@sdust.edu.cn;1370023124@qq.com;legendglj99@tju.edu.cn;zhangbo@163.com;861637617@qq.com;niufeng@hebut.edu.cn
  • Supported by:
    National Natural Science Foundation of China(51807134);State Key Laboratory of Reliability and Intelligence of Electrical Equipment (Hebei University of Technology)(EERI_KF20200014)


Since distributed power supply is connected to distribution networks on a large scale, its topology and components are becoming more and more complex. As the direction of fault current at feeder switches is difficult to determine, a new matrix algorithm for equivalent decoupling fault location in complex distribution networks is proposed in this paper. In order to simplify the topology of complex distribution network effectively, the distribution network is decoupled according to the principle of depth priority to make it a network composed of tree trunks. A new fault-location matrix algorithm for complex distribution network is presented to solve the problem of large computation and complex steps in fault-location matrix algorithm for complex distribution network. Compared with traditional matrix algorithm, this method is more accurate for T-section and terminal section of power network fault location. Finally, through the typical park distribution network model and the improved IEEE 33-node system case, the method proposed in this paper can not only locate the faults in the distribution network, but also simplify the complex distribution network structure. Compared with the traveling wave method, the proposed method shortens the locating time and has better application value.

Key words: distributed generation, complex distribution network, fault location, matrix algorithm, equivalent decoupling

CLC Number: