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Multi-layer soil structure analysis for substation and power generating station sites

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6 Author(s)
Xiyuang Pan ; Dept. of Electr. Eng., Tsinghua Univ., Beijing, China ; Rong Zeng ; Jinliang He ; Yanqing Gao
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The multi-layer soil structure model is fundamental to design of grounding systems of substations and power generating stations. Potential distribution of ground surface generated by a point current source is derived using electromagnetic field theory, and also the relationship between the apparent soil resistivity measured by Wenner four-electrode configuration and the measurement electrode span is deduced. A nonlinear target function is introduced, and the problem to analyze structure parameters is transferred into how to obtain the extremum of the nonlinear target function. A suitable calculation method is used to acquire soil structure parameters. The studied analysis software is applied to actual substation sites; the analyzed result has a good agreement with the actual engineering result

Published in:

Power System Technology, 2000. Proceedings. PowerCon 2000. International Conference on  (Volume:3 )

Date of Conference:

2000