Title :
Equivalent resistivity of non-uniform soil for grounding grid design
Author :
Thapar, Baldev ; Gerez, Victor
Author_Institution :
Montana State Univ., Bozeman, MT, USA
fDate :
4/1/1995 12:00:00 AM
Abstract :
This paper develops a method to determine the equivalent resistivity of heterogeneous soils to be used in the available expressions for uniform soils employed to calculate the ground resistance, mesh and step voltages of substation grounding grids. The results obtained with the proposed equivalent resistivity are compared with the results obtained from the two layer and the multilayer models of the soil and with the results from a computer program, developed by the authors, directly based on the potential produced by a point source in heterogeneous soil
Keywords :
design engineering; digital simulation; earthing; electrical resistivity; equivalent circuits; power system analysis computing; power system protection; soil; substations; computer program; earth; equivalent resistivity; heterogeneous soils; mesh voltage; nonuniform soil; point source; potential; power system grounding grids; simulation; step voltage; substation protection; Conductivity; Electrodes; Grid computing; Grounding; Nonhomogeneous media; Senior members; Soil measurements; Substations; Surface discharges; Voltage;
Journal_Title :
Power Delivery, IEEE Transactions on
