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Simplified Method for Substation Grounding System Design

Journal: International Journal of Trend in Scientific Research and Development (Vol.3, No. 5)

Publication Date:

Authors : ;

Page : 1798-1801

Keywords : Electrical Engineering; substation grounding; earth resistance; soil layer resistivity; round potential rise; mesh gird;

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This paper focused 230 66 kV, substation grounding system and calculation results of required parameters at location of Kalay region. The grounding system is essential to protect people working or walking in the vicinity of earthed facilities and equipments against the danger of electric shock. It provides the floor surface either assures an effective insulation from earth potential or effectively equipment to a close mesh grid. Calculations of grounding grid system in the substation area where the top soil layer resistivity is less than the bottom layer resistivity can be less the number of ground rod used in the grid because the value of Ground Potential Rise GPR is insignificantly different. To get desired parameters such as touch and step voltage criteria for safety, earth resistance, grid resistance, maximum grid current, minimum conductor size and electrode size, maximum fault current level and resistivity of soil are designed in detail consideration. Aye Myo Thant | Cho Cho Win | Thant Zaw Oo "Simplified Method for Substation Grounding System Design" Published in International Journal of Trend in Scientific Research and Development (ijtsrd), ISSN: 2456-6470, Volume-3 | Issue-5 , August 2019, URL: URL:

Last modified: 2019-09-09 22:16:35