NDLI: Multi-resolution complex image method of horizontal multilayer earth

Content Provider	IEEE Xplore Digital Library
Author	Ling Ruan You-bing Zhou Jiang-tao Quan Qi Yang Zhuo-hong Pan Xi-shan Wen
Copyright Year	2014
Description	Author affiliation: Sch. of Electr. Eng., Wuhan Univ., Wuhan, China (Qi Yang; Zhuo-hong Pan; Xi-shan Wen) \|\| Key Lab. of High-Voltage Field-test Tech. of Electr. Power Res. Inst., Hubei Power Grid Corp., Wuhan, China (Ling Ruan; You-bing Zhou; Jiang-tao Quan)
Abstract	In order to improve numerical performance of grounding computation of horizontal multilayer earths, a new type of complex image method has been presented. A closed form expression of Green's function with arbitrary soil parameters, source/observation position has been derived. The infinite value of coefficients A/B in Green's function has been obtained by derived closed form expression. Though numerical value of A/B can be obtained by symbolic algorithms, GNU multiple precision algorithms provides a more simple and reliable way to solve the linear equations of A/B. Then, multi-resolution complex image (MRCIM) method was presented for improvement on both stability and accuracy in numerical grounding computation of horizontal multilayer soils. MRCIM consists of adaptive sampling, decomposition of sampling space, and automations of complex image method approximation. The formula of numerical error by MRCIM has been derived. The validity of MRCIM has been proved by comparative cases. Numerical results show that, during the earth surface potential (ESP) calculation for HVDC transmission earth-return current, DC grounding electrodes can be treated as a current point when observation point is away from over 10 times of dimension of electrodes.
Sponsorship	IEEE Indonesia Sect.
Starting Page	1
Ending Page	6
File Size	302177
Page Count	6
File Format	PDF
ISBN	9781479953028
e-ISBN	9781479953035
DOI	10.1109/ICITEED.2014.7007943
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2014-10-07
Publisher Place	Indonesia
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Horizontal multilayer earth Grounding computation Grounding Computer integrated manufacturing Nonhomogeneous media Electrodes Earth Earth surface potential (ESP) Earth-return current GNU multiple precision library (GMP) Soil Green's function methods Multi-resolution complex image method (MRCIM)
Content Type	Text
Resource Type	Article

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