Novel method of fault section location based on phase current increment
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TM771

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    Abstract:

    In order to solve the unsatisfactory section location problem of single phase grounding fault in distribution network, a novel method of fault section location based on phase current increment is presented according to the similarities between features of threephase phase current increment waveform in healthy lines and the fault line after the fault point, as well as great difference between healthy lines and the fault line before the fault point. In the method, the power coefficients of each detection point can be calculated by threephase current increment and sent back to host. The fault section is predicted by comparison with the power coefficients of its adjacent detection points. The advantage of this method is that it reduces the pressure of the communication system while only using current as the fault section location characteristic. Furthermore, simulation and data analysis indicate that this method can correctly predict fault section in high, medium and low resistance grounding under every kind of initial angles. It has good applicability under simple theory.

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宗伟林,邹 运,戴经纬,杨丽丽,王海波,张梦琦,骆德昌.基于相电流增量的故障区间定位新方法[J].电力科学与技术学报英文版,2020,35(2):128-134. ZONG Weilin, ZOU Yun, DAI Jingwei, YANG Lili, WANG Haibo, ZHANG Mengqi, LUO Dechang. Novel method of fault section location based on phase current increment[J]. Journal of Electric Power Science and Technology,2020,35(2):128-134.

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  • Received:
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  • Online: September 03,2020
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