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 language | English |
|---|---|
| Title of host publication | 2018 19th International Scientific Conference on Electric Power Engineering, EPE 2018 - Proceedings |
| Publisher | Institute of Electrical and Electronics Engineers |
| Pages | 1-4 |
| Number of pages | 4 |
| ISBN (Electronic) | 9781538646113 |
| DOIs | |
| Publication status | Published - 25 Jun 2018 |
| Event | 19th International Scientific Conference on Electric Power Engineering, - Orea Resort Santon, Brno, Czech Republic Duration: 16 May 2018 → 18 May 2018 http://www.epe-conference.eu/index2.php?section=home&lang=en |
Conference
| Conference | 19th International Scientific Conference on Electric Power Engineering, |
|---|---|
| Abbreviated title | EPE 2018 |
| Country/Territory | Czech Republic |
| City | Brno |
| Period | 16/05/18 → 18/05/18 |
| 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