Paper URL: https://www.ijtsrd.com/engineering/electrical-engineering/26747/design-of-earthing-system-for-230-kv-high-voltage-substation-by-etap-126-software/khin-thuzar-soe
paper publication in science, call for paper medical science, ugc approved management journal
The design of earthing system for 230 kV substation is challenging task. A safety is one major concern in the operation and design of an electrical power system. This Paper is to provide information pertinent to safe earthing practice in substation design and to establish the safe limits of potential difference under normal and fault conditions. Substation earthing system design requires calculating of parameter such as touch and step voltage criteria for safety, grid resistance, maximum grid current, earth resistance, minimum conductor size and electrode size, maximum fault current level and soil resistivity. Soil resistivity is a major factor influencing substation grid design. In this paper, design of earthing grid for Square configuration to obtain the minimum cost and safety. Finally, simulation results were carried out using ETAP 12.6 software. This paper mentions the method proposed for substation earthing is in accordance with IEEE Std 80 2000.
