What question did this study set out to answer?

To establish a method for calculating the equivalent resistivity of heterogeneous soils so that standard uniform-soil formulas can be used for substation grounding grid design.

April 1, 1995IEEE Transactions on Power Delivery

Equivalent resistivity of non-uniform soil for grounding grid design

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Authors

BTB. ThaparMontana State University VGV. GerezMontana State University

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Implication

Computational analysis demonstrates an equivalent resistivity method for heterogeneous soils, improving grounding grid safety calculations in electrical substations.

Key Points

To establish a method for calculating the equivalent resistivity of heterogeneous soils so that standard uniform-soil formulas can be used for substation grounding grid design.
Derived a calculation framework to compute an equivalent soil resistivity representing non-uniform, layered ground structures.
Evaluated the method using standard equations for ground resistance, step voltage, and mesh voltage.
Benchmarked calculations against two-layer models, multilayer models, and a point-source electric potential computer program.
The proposed equivalent resistivity approach allowed standard uniform-soil equations to be applied to complex heterogeneous ground profiles.
Validation confirmed consistency between the equivalent resistivity calculations, multilayer analytical models, and point-source computational simulations.

Cite This Study

Thapar et al. (1995) studied this question.

synapsesocial.com/papers/6a93cccd56e7316c66d7cb1e https://doi.org/10.1109/61.400855

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Implication

Computational analysis demonstrates an equivalent resistivity method for heterogeneous soils, improving grounding grid safety calculations in electrical substations.

Equivalent resistivity of non-uniform soil for grounding grid design

Discussion

Member takes

Implication

Key Points

Cite This Study

Equivalent resistivity of non-uniform soil for grounding grid design

Discussion

Member takes

Implication

Key Points

Cite This Study

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