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PIER PIER B PIER C PIER M PIER Letters
2013-04-24
Optimal Programs to Reduce the Resistance of Grounding Systems
By
Run Xiong,

    Dr. Run Xiong

    National Key laboratory on Electromagnetic Environment and electro-optical Engineering

    PLA University of Science and Technology

    China

    Homepage

Bin Chen,

    Dr. Bin Chen

    PLA University of Science and Technology

    China

    Homepage

Cheng Gao,

    Dr. Cheng Gao

    National Key Laboratory on Electromagnetic Environmental Effects and Electro-optical Engineering

    PLA University of Science and Technology

    P. R. China

    Homepage

Yan-Xin Li,

    Dr. Yan-Xin Li

    National Key laboratory on Electromagnetic Environment and electro-optical Engineering

    PLA University of Science and Technology

    China

    Homepage

Wen Yang

    Dr. Wen Yang

    Engineering and Design Institute

    Chengdu Military Area of PLA.

    China

    Homepage

Progress In Electromagnetics Research, Vol. 139, 211-227, 2013
doi:10.2528/PIER13032507
Abstract
In this paper, some optimal programs have been proposed through the analyses of transient grounding resistance (TGR) to reduce the grounding resistance using the finite-difference time-domain method. First, the TGR of various electrode types, lengths and sectional programs is studied, and it is found that a flat bar is the most financially efficient conductor to be used as grounding electrode. Enlarging grounding electrode length can reduce grounding resistance when it is shorter than the effective length, but the reduction effect declines as the length increases. Additionally, a series of small electrodes would lead to a much lower resistance than a single large one. Second, it is demonstrated that locally improving the soil near the grounding system is an efficient way of reducing the grounding resistance. Improving a limited area soil surrounding the lifting line would reduce the peak resistance significantly, while local enlarging electrodes surrounded soil conductivity can reduce the grounding system steady resistance obviously.
Citation
Run Xiong, Bin Chen, Cheng Gao, Yan-Xin Li, and Wen Yang, "Optimal Programs to Reduce the Resistance of Grounding Systems," Progress In Electromagnetics Research, Vol. 139, 211-227, 2013.
doi:10.2528/PIER13032507
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