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- Title
Determination of Critical Electric Field and Recommended Earth Resistance Values of Earthing Systems.
- Authors
Abdullah, S.; Reffin, M.; Nor, N. Mohamad; Rahman, N. Abdul; Abdullah, N.; Agbor, N.; Yahaya, M.; Hatta, N.
- Abstract
Impulse characteristics of earthing systems are important for designing earthing systems and lightning protection. In this work, experimental investigation on the impulse response of earthing systems of the single rod and tower is presented. The earthing systems of the single rod and tower are installed at three different sites, with different level of soil resistivity. Calculation using CIGRE's formulae is performed to determine the ionisation level of soil, which is also known as the critical electric field, Ec. Earth resistance values are also calculated using experimental results. It has been found that Ec is lower in high level of soil resistivity. Furthermore, the initial study indicates that it is important to consider the Ec and ionisation process occurring in soil when designing the earthing system.
- Subjects
EARTH resistance measurements; ELECTRIC fields; INTERNATIONAL Council on Large Electric Systems; IONIZATION constants; ELECTRIC properties of soils
- Publication
International Review of Electrical Engineering, 2017, Vol 12, Issue 4, p361
- ISSN
1827-6660
- Publication type
Article
- DOI
10.15866/iree.v12i4.12317