Electric Power ›› 2016, Vol. 49 ›› Issue (3): 94-98.DOI: 10.11930/j.issn.1004-9649.2016.03.094.05

• Smart Grid • Previous Articles     Next Articles

Fault Location of Distribution Network by Applying Matrix Algorithm Based on Graph Theory

HU Funian, SUN Shoujuan   

  1. School of Electrical Engineering and Automation, Jiangsu Normal University, Xuzhou 221116, China
  • Received:2015-10-08 Revised:2016-04-08 Online:2016-03-20 Published:2016-04-08

Abstract: Based on an analysis of the existing weakness of fault location algorithm for distribution network, an improved fault location algorithm based on graph theory is proposed in this paper. Firstly a network topology matrix is produced according to the distribution network. When a fault occurs, the fault information matrix can be generated from the fault signal uploaded from FTU through GPRS. Then a fault judgement matrix is obtained by adding the two matrixes above, and the fault section can be located according to the failure criterion. The proposed algorithm can not only locate a single fault of the distribution network with single power source, but also make a quick judgement of the multiple faults and the feeder end fault of the distribution network with multiple power sources. Furthermore, the algorithm is also applicable to the incomplete fault information from FTU. The simulation results show that the proposed algorithm is concise and practical with low computation cost, and can satisfy the requirements of modern distribution network automation.

Key words: fault location, matrix algorithm, graph theory, end fault, feeder automation, multi-source, incomplete information

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