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ZJUS-A
Journal of Zhejiang University-SCIENCE A (Applied Physics & Engineering)  2003, Vol. 4 Issue (5): 520-525    DOI: 10.1631/jzus.2003.0520
Electronics & Information Technology     
Fault location of two-parallel transmission line for double phase-to-earth fault using one-terminal data
ZHANG Qing-chao, DUAN Hui, GENG Chao, SONG Wen-nan
School of Electrical Engineering and Energy, Tianjin University, Tianjin 300072, China
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Abstract  An accurate algorithm for fault location of double phase-to-earth fault on transmission line of direct ground neutral system is presented. The algorithm, which employs the faulted phase network and zero-sequence network as fault-location model in which the source impedance at the remote end is not involved, effectively eliminates the effect of load flow and fault resistance on the accuracy of fault location. The algorithm achieves accurate location by measuring only one local end data and is used in a procedure that provides automatic determination of faulted types and phases, and does not require the engineer to specify them. Simulation results showed the effectiveness of the algorithm under the condition of double phase-to-earth fault.

Key words： Fault location      Transmission line      Double phase-to-earth fault     
Received: 26 October 2002     
CLC:  TM77  
  F540.3  
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ZHANG Qing-chao
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GENG Chao
SONG Wen-nan
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ZHANG Qing-chao, DUAN Hui, GENG Chao, SONG Wen-nan. Fault location of two-parallel transmission line for double phase-to-earth fault using one-terminal data. Journal of Zhejiang University-SCIENCE A (Applied Physics & Engineering), 2003, 4(5): 520-525.

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http://www.zjujournals.com/xueshu/zjus-a/10.1631/jzus.2003.0520     OR     http://www.zjujournals.com/xueshu/zjus-a/Y2003/V4/I5/520

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