Optimal Design Of Earth Mat For 110kv Substation
Author(s):
Chetan Kudale, Dr.Supanna Shirguppe
Keywords:
Grounding grids, Grid resistance, Ground rods, Step voltage, Touch voltage.
Abstract
Earthing is essential for electric supply system to ensure safety and proper operation. An effective earthing system depends on various factors like resistivity of surface layer of soil, duration and magnitude of fault current, maximum safe current that a human body can tolerate and the permissible earth potential rise that may take place due to fault current. This paper presents the design of Earthing system for 110 KV substation and calculation of its parameters and effect of ground rods. It plays an important role when adding to the grounding grid to improve the performance of it by reducing not only the grid resistance but also the touch and step voltages to values that safe for human. The paper investigates the effect of vertical rods location on the values of grid resistance, step and touch voltages
Article Details
Unique Paper ID: 156604

Publication Volume & Issue: Volume 9, Issue 4

Page(s): 245 - 249
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