Sensitivity analysis of frequency-Dependent soil models based on rational approximation.

被引：1

作者：

Salvador, J. P. L. ^{[1
]}

Lima, A. C. S. ^{[2
]}

Alipio, R. ^{[3
]}

de Barros, M. T. Correia ^{[4
]}

机构：

[1] CEFET RJ, Fed Ctr Technol Edicat Celso Suckow da Fonseca, Angra Dos Reis, Brazil

[2] Univ Fed Rio de Janeiro, COPPE UFRJ, Rio De Janeiro, Brazil

[3] CEFET MG, Fed Ctr Technol Educ Minas Gerais, Belo Horizonte, MG, Brazil

[4] Univ Lisbon, Inst Super Tcn, Lisbon, Portugal

来源：

ELECTRIC POWER SYSTEMS RESEARCH | 2021年 / 196卷

关键词：

Soil parameters; Soil modeling; Sensitivity analysis; Grounding; PARAMETERS;

D O I：

10.1016/j.epsr.2021.107235

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

The rational approximation of frequency-dependent soil models is a straightforward way to deal with ground parameters variation, once the sum of partial fractions in frequency-domain become a sum of exponentials in time-domain. This work proposes to investigate sensitivity analyses of the frequency-dependent soil model proposed by Alipio and Visacro with respect to frequency and to the dc conductivity, aiming to a rational realization that is actually simpler than the one obtained through a traditional fitting technique, namely, Vector Fitting (VF). Results indicated that a simpler realization is possible using a smaller subset of the poles and residues obtained via VF, without compromising accuracy within the frequency range of interest.

引用

页数：9

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