Earth fault current distribution and proof method of global earthing systems

Lothar Fickert, Thomas Mallits, Markus Resch

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

In order to estimate the currents as well as the relevant voltage drops in case of an earth fault, a calculation model was prepared to give an overview of possible dangerous earth potential rises, touch and step voltages. The combination of two inductively coupled loops and a low voltage model for an earth fault in a cable ring structure, which is made up from one single feeder operated with an open circuit breaker led to the calculation of the reduction factor. When inserting typical values for an urban low voltage network, it is shown that the earth fault current returns mainly through the cable sheaths and not via the grounding system of the afflicted ring main unit.

Original languageEnglish
Title of host publication2018 19th International Scientific Conference on Electric Power Engineering, EPE 2018 - Proceedings
PublisherInstitute of Electrical and Electronics Engineers
Pages1-4
Number of pages4
ISBN (Electronic)9781538646113
DOIs
Publication statusPublished - 25 Jun 2018
Event19th International Scientific Conference on Electric Power Engineering, - Orea Resort Santon, Brno, Czech Republic
Duration: 16 May 201818 May 2018
http://www.epe-conference.eu/index2.php?section=home&lang=en

Conference

Conference19th International Scientific Conference on Electric Power Engineering,
Abbreviated titleEPE 2018
CountryCzech Republic
CityBrno
Period16/05/1818/05/18
Internet address

Keywords

  • Earth Fault Current
  • Global earthing system
  • Reduction factor

ASJC Scopus subject areas

  • Electrical and Electronic Engineering
  • Control and Optimization
  • Computer Networks and Communications
  • Energy Engineering and Power Technology
  • Nuclear Energy and Engineering
  • Safety, Risk, Reliability and Quality

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