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VYČÍTAL, V. TOPOLÁNEK, D. TOMAN, P. PTÁČEK, M.
Original Title
Sensitivity Analysis of Earthing System Impedance for Single and Multilayered Soil
Type
conference paper
Language
English
Original Abstract
Over the last decades computer power has grown and it is now possible to use computers for solving any electromagnetic problem by the approach of solving rigorous electromagnetic field (EMF) equations (Maxwell´s equations). With the use of this technique, it is possible to easily model an earthing system (ES) with a uniform or non-uniform soil model. This paper thus points out to the possible error between the analytical and EMF approach when determining ES resistance that has a crucial effect on resulting human safety. Three different ESs of distribution system substation were modelled using EMF simulation software (Ansoft Maxwell) for uniform and two layer soil models. The expected earthing resistances were determined for the ES models and compared with the values obtained by an analytical uniform soil model. The calculation was done for two different values of surface soil resistivities as well as for four different values of the surface layer thickness. Both values were compared which indicated the possible error that is being made when using an old analytical approach.
Keywords
earthing system resistance calculation; sensitivity analysis; two layer soil model
Authors
VYČÍTAL, V.; TOPOLÁNEK, D.; TOMAN, P.; PTÁČEK, M.
Released
12. 6. 2017
Publisher
CIRED
Location
Glasgow, UK
ISBN
978-1-78561-483-5
Book
CIRED 2017, The 24th International Conference and Exhibition on Electricity Distribution
Edition number
24
2515-0855
Periodical
CIRED – Open Access Proceedings Journal
Year of study
Vol. 2017
Number
1
State
United Kingdom of Great Britain and Northern Ireland
Pages from
Pages to
5
Pages count
URL
http://cired.net/publications/cired2017/
BibTex
@inproceedings{BUT141750, author="Václav {Vyčítal} and David {Topolánek} and Petr {Toman} and Michal {Ptáček}", title="Sensitivity Analysis of Earthing System Impedance for Single and Multilayered Soil", booktitle="CIRED 2017, The 24th International Conference and Exhibition on Electricity Distribution", year="2017", journal="CIRED – Open Access Proceedings Journal", volume="Vol. 2017", number="1", pages="1--5", publisher="CIRED", address="Glasgow, UK", doi="10.1049/oap-cired.2017.1108", isbn="978-1-78561-483-5", issn="2515-0855", url="http://cired.net/publications/cired2017/" }