Impact of split factor value on the safe design of distribution substation earth grid

S. D. Buba, W. F.Wan Ahmad, M. Z.A. Ab. Kadir, Chandima Gomes, J. Jasni, M. Osman

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

Abstract

Split factor is a fundamental consideration when designing a distribution substation earth grid. Arbitrary choice of split factor in earth grid design process may lead to technical and economic implications resulting in underestimated or overestimated designs. In this paper, a distribution substation earth grid was designed using SESCAD and executed in MALT module of CDEGS. The energization current was varied by 100%, 75%, 50% and 25% of the short circuit current available at the secondary terminals of the upstream transformer to determine the impact on safety criteria of the earth grid. Results indicated that, the EPR for 100% fault current was higher, whereas the step and touch voltages were lower. It was also revealed that, there was no difference in step and touch voltages when energization current was set at 75%, 50% and 25%.

Original languageEnglish
Title of host publication2014 International Conference on Lightning Protection, ICLP 2014
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages762-767
Number of pages6
ISBN (Electronic)9781479935444
DOIs
Publication statusPublished - 03 Dec 2014
Event2014 International Conference on Lightning Protection, ICLP 2014 - Shanghai, China
Duration: 11 Oct 201418 Oct 2014

Publication series

Name2014 International Conference on Lightning Protection, ICLP 2014

Other

Other2014 International Conference on Lightning Protection, ICLP 2014
CountryChina
CityShanghai
Period11/10/1418/10/14

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All Science Journal Classification (ASJC) codes

  • Environmental Engineering

Cite this

Buba, S. D., Ahmad, W. F. W., Ab. Kadir, M. Z. A., Gomes, C., Jasni, J., & Osman, M. (2014). Impact of split factor value on the safe design of distribution substation earth grid. In 2014 International Conference on Lightning Protection, ICLP 2014 (pp. 762-767). [6973225] (2014 International Conference on Lightning Protection, ICLP 2014). Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/ICLP.2014.6973225