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Electrical
Grounding Analysis
SKM GroundMat is a program for substation earth grid design and analysis. It
is designed to help optimise grid design or reinforce existing grids of any
shape. It uses a general-purpose finite element algorithm for potential
analysis and graphical facilities to validate ground system efficiency.
Benefits:
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Design safer and more cost-effective earth grids.
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Save time with graphical entry and display.
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Communicate designs more easily with professional reports and graphs.
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Evaluate alternatives quickly and easily to establish an optimal design.
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Save time with design wizard capabilities.
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PTW GroundMat is an important tool every power system engineer should have.
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Solution Algorithms:
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Finite element analysis of the earth conductors.
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Finite element analysis of the earth rods.
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Grid conductor current displacement using Matrix analysis.
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Analysis Options:
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Earth model analysis from field measurements.
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User-specified fault current.
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Grid and earth potential analysis.
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Ability to analyse multiple ground systems.
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Ability to analyse the potential rise for each grounding system including
neighbouring passive grids or rods.
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Safety analysis including surface materials, based on body weight and exposure
time.
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Option to use IEEE Std. 80 or IEC Std. 479 for safety analysis.
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Calculation of maximum permissible touch and step voltages.
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Comprehensive report for grid and rod configuration.
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Comprehensive report for surface potential analysis featuring station data and
currents diffused to earth by the grid elements.
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Danger point evaluation.
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Touch voltage, step voltage, and earth potential analysis.
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Interface Options:
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Create and store alternative designs with a simple copy/paste.
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Data entry for grid and rods in spreadsheet format.
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Data entry for earth model in spreadsheet format.
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Grid/rod/profile wizards to setup initial system.
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3D/2D representation of grid and rod configuration.
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3D display of touch voltage, step voltage, and earth potential plots.
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Report viewer for text reports.
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Cut, copy and paste grid/rod segments in spreadsheet.
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Range-checking for simulation parameters.
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User-defined thresholds for danger area evaluation.
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User-defined colour coding for graphical safety analysis.
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Metric and Imperial units.
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Group print function.
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Project setup Options:
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Stores multiple study revisions for each project.
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Expanding tree structure to manage project revisions.
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Input data and output results saved for each study.
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Copy, paste and rename study revisions to compare alternative designs.
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Run studies for multiple study revisions as a single action.
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Download the brochure in PDF format:
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GroundMat.pdf (45kB)