Sensitivity Analysis of Earthing System Impedance for Single and Multilayered Soil

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216305%3A26220%2F17%3APU125524" target="_blank" >RIV/00216305:26220/17:PU125524 - isvavai.cz</a>

Výsledek na webu

<a href="http://cired.net/publications/cired2017/" target="_blank" >http://cired.net/publications/cired2017/</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1049/oap-cired.2017.1108" target="_blank" >10.1049/oap-cired.2017.1108</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Sensitivity Analysis of Earthing System Impedance for Single and Multilayered Soil

Popis výsledku v původním jazyce

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.

Název v anglickém jazyce

Sensitivity Analysis of Earthing System Impedance for Single and Multilayered Soil

Popis výsledku anglicky

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.

Druh

D - Stať ve sborníku

CEP obor

—

OECD FORD obor

20704 - Energy and fuels

Projekt

<a href="/cs/project/LO1210" target="_blank" >LO1210: Energie v podmínkách udržitelného rozvoje (EN-PUR)</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2017

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název statě ve sborníku

CIRED 2017, The 24th International Conference and Exhibition on Electricity Distribution

ISBN

978-1-78561-483-5

ISSN

2515-0855

e-ISSN

—

Počet stran výsledku

5

Strana od-do

1-5

Název nakladatele

CIRED

Místo vydání

Glasgow, UK

Místo konání akce

Glasgow

Datum konání akce

12. 6. 2017

Typ akce podle státní příslušnosti

WRD - Celosvětová akce

Kód UT WoS článku

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