Research Design of Grounding System for Substation, Using Soil Enhancement Material

This paper presents the steps of calculating a safety grounding system of substations as recommended by the IEEE Std standard. 80-2013 with ground grid configuration combined mesh and earth rods, using ground soil enhancement material to reduce ground resistance. A program for automatic design of substation grounding system has been developed, allowing quick calculations to be applied to Electricity companies, Electrical Design Consultants, etc. in Vietnam, for the sample grounding calculation example is applied to the 220/110/22kV Long Thanh substation.