Case study on impact of seasonal variations of soil resistivities on substation grounding systems safety in tropical country

Noradlina Abdullah, Aziz Marzuki Ahmad Marican, Miszaina Osman, Nurul Azlina Abdul Rahman

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

3 Citations (Scopus)

Abstract

It is important to evaluate the validity and safety of the substation earthing system since over time the physical and electrical properties or requirements of the substation earthing can change in many ways. A research study focused on safety assessment of substation earthing systems due to variations of soil resistivities values which dependent on tropical rainfall variations was carried out on a 132kV substation. Actual earthing resistances and soil resistivities values were measured at a regular interval for a period of 18-months as input to the simulation process. The study used CDEGS™ software for modeling and assessment of substations earthing system safety. From the initial desktop simulation calculation based on the above models, it was found that the substation have its touch and step voltages exceeded the allowable limits as per IEEE 80-2000 Standard (IEEE Guide for Safety in AC Substation Grounding) for some period throughout the duration of the study.

Original languageEnglish
Title of host publication2011 7th Asia-Pacific International Conference on Lightning, APL2011
Pages150-154
Number of pages5
DOIs
Publication statusPublished - 01 Dec 2011
Event2011 7th Asia-Pacific International Conference on Lightning, APL2011 - Chengdu, China
Duration: 01 Nov 201104 Nov 2011

Publication series

Name2011 7th Asia-Pacific International Conference on Lightning, APL2011

Other

Other2011 7th Asia-Pacific International Conference on Lightning, APL2011
CountryChina
CityChengdu
Period01/11/1104/11/11

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All Science Journal Classification (ASJC) codes

  • Environmental Chemistry

Cite this

Abdullah, N., Marican, A. M. A., Osman, M., & Rahman, N. A. A. (2011). Case study on impact of seasonal variations of soil resistivities on substation grounding systems safety in tropical country. In 2011 7th Asia-Pacific International Conference on Lightning, APL2011 (pp. 150-154). [6111092] (2011 7th Asia-Pacific International Conference on Lightning, APL2011). https://doi.org/10.1109/APL.2011.6111092