Calculating the transient behavior of grounding systems using inverse Laplace transform 被引量：3

Calculating the transient behavior of grounding systems using inverse Laplace transform

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摘要 This paper deals with a unified and novel approach for analyzing the frequency and time domain performance of grounding systems.The proposed procedure is based on solving the full set of Maxwell's equations in the frequency domain,and enables the exact computation of very near fields at the surface of the grounding grid,as well as far fields,by simple and accurate closed-form expressions for solving Sommerfeld integrals.In addition,the soil ionization is easily considered in the proposed method.The frequency domain responses are converted to the time domain by fast inverse Laplace transform.The results are validated and have shown acceptable accuracy. This paper deals with a unified and novel approach for analyzing the frequency and time domain performance of grounding systems. The proposed procedure is based on solving the full set of Maxwell＇s equations in the frequency domain, and enables the exact computation of very near fields at the surface of the grounding grid, as well as far fields, by simple and accurate closed-form expressions for solving Sommerfeld integrals. In addition, the soil ionization is easily considered in the proposed method. The frequency domain responses are converted to the time domain by fast inverse Laplace transform. The results are validated and have shown acceptable accuracy.

作者 Nabiollah RAMEZANI Seyed Mohammad SHAHRTASH

机构地区 Behshahr Branch Center of Excellence for Power Systems Automation and Operation

出处《Journal of Zhejiang University-Science C(Computers and Electronics)》 SCIE EI 2011年第3期250-262,共13页 浙江大学学报C辑（计算机与电子（英文版）

关键词 Electromagnetic field Near-field computation High frequency performance Soil ionization Grounding system Fast inverse Laplace transform Electromagnetic field, Near-field computation, High frequency performance, Soil ionization, Grounding system, Fast inverse Laplace transform

分类号 TM744 [电气工程—电力系统及自动化]

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参考文献27

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