Modeling and Performance Analysis of Grounding System of a Grid Substation

Abstract

This paper represents the design of a grounding system of a grid substation. A proper grounding mesh design is a vital part of a substation designing. To ensure the safety for personnel as well as for the equipment in a substation, a grounding mesh is a must. The compatibility of the proposed design has been checked by forming a calculation by two ways, one is manually done by usual Microsoft Excel and the other one through a software CYMGRD. Three important criteria (touch potential, step potential and ground potential rise) have been focused for checking the suitability of the design. After that a comparison have been done between these two methodologies. The design of the grounding system has carried out according to the standard of IEEE 80-2000. The ultimate goal of this comparison is to Figure out the convenient way of calculation which reduce the time and provide the visualization of the protected and unprotected zone in the substation.