Author : Sarbesh Bhattacherjee 1
Date of Publication :30th March 2018
Abstract: Grounding system has a dominant effect on the design of all substations and its design strategy needs substantial attention as it plays an indispensable role in the proper functioning of the substation. Designing of an effective grounding system is very imperative as it encompasses a great deal of personal safety and appropriate operation of the substation equipment. In this present work, a case study of a 33/11kV substation is done using the IEEE Standards 80-2000 as a reference. The procedure for designing of the grounding system is carried out with the help of a MATLAB program. The same is then used to calculate the values of the Ground resistance, the Ground Potential Rise (GPR), the Step potential and the Touch potential. The calculations are then followed by a comparative analysis of the effects of the increase in the number of electrodes and/or the ground rods on ground resistance, ground potential rise, step potential and touch potential
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