Switchyard Earthing Design for a Distribution Substation
Authors: Sagun Katuwal
Abstract— For technical and safety reasons, electrical power equipment must be grounded. The earthing system effectively dissipates the flow of the fault current to the earth by maintaining the earthing resistance as low as possible. Switchyard earthing generally comprises horizontal conductors designed in the form of an earthing mat and connected with vertical rods buried under the switchyard ground. The paper presents a switchyard earthing design analysis of a 33kV distribution switchyard using the IEEE-80 Guide for Substation Earthing and Finite Element Method based simulations. The calculation based on the IEEE-80 guide was then compared with the results of the Finite Element Method performed by Electrical Transient Analyzer Program software.
Keywords— IEEE, FEM, ETAP, Step voltage, Touch voltage, Soil resistivity, Ground Potential Rise (GPR)
Full Paper: to be purchased $20 (contact us at [email protected])
Published In: International Conference on Role of Energy for Sustainable Social Development in ‘New Normal’ Era (RESSD-2020)
Date of Conference: 28th-29th December 2020
Conference Location: Kathmandu, Nepal
Publisher: IEEE Power and Energy Society Nepal Chapter
Cite the paper as:
S. Katuwal, “Switchyard Earthing Design for a Distribution Substation”, International Conference on Role of Energy for Sustainable Social Development in ‘New Normal’ Era, 28th-29th December 2020, Kathmandu, Nepal