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Vol. 165, Issue 2, February 2014, pp. 176-181




Characteristics of Phase Current and its Application in Fault Section Location
in Noneffectively Grounded Distribution Systems

Jinrui Tang, Xianggen Yin, Zhe Zhang

State Key Laboratory of Advanced Electromagnetic Engineering and Technology Huazhong University of Science and Technology,
Wuhan 430074, China

E-mail: tangjinrui@hust.edu.cn


Received: 23 January 2014 /Accepted: 24 February 2014 /Published: 28 February 2014

Digital Sensors and Sensor Sysstems


Abstract: Medium voltage distribution systems of some countries are mostly noneffectively grounded systems, and most of the distribution automation systems do not have the function of locating the fault section for single phase-to-ground fault. This paper presents a method of fault section location based on the characteristic of the phase current difference. It makes a deep analysis based on instantaneous symmetrical component method when single phase-to-ground fault happens. This method requires only a little data to be transferred and does not need voltage information, so it is easy to be popularized and applied in engineering practice. The effectiveness of the method has been verified by the PSCAD/EMTDC simulation results.


Keywords: Fault section location, Phase current, Distribution systems.


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