CEE Relays Ltd

Tel:   +44 1753 576477    Fax: +44 1753 825661
Standalone program: Ground Mat (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.

A full brochure describing this program is available in PDF format via the link at the bottom of this page. 
Ground Mat Screenshot
  • Design safer and more cost-effective earth grids. 
  • Save time with graphical entry and display.  
  • Communicate designs more easily with professional reports and graphs. 
  • Evaluate alternatives quickly and easily to establish an optimal design. 
  • Save time with design wizard capabilities. 
  • PTW GroundMat is an important tool every power system engineer should have. 
Solution Algorithms
  • Finite element analysis of the earth conductors. 
  • Finite element analysis of the earth rods. 
  • Grid conductor current displacement using Matrix analysis.
Analysis Options
  • Earth model analysis from field measurements. 
  • User-specified fault current. 
  • Grid and earth potential analysis. 
  • Ability to analyse multiple ground systems. 
  • Ability to analyse the potential rise for each grounding system including neighbouring passive grids or rods. 
  • Safety analysis including surface materials, based on body weight and exposure time. 
  • Option to use IEEE Std. 80 or IEC Std. 479 for safety analysis. 
  • Calculation of maximum permissible touch and step voltages. 
  • Comprehensive report for grid and rod configuration. 
  • Comprehensive report for surface potential analysis featuring station data and currents diffused to earth by the grid elements. 
  • Danger point evaluation.  
  • Touch voltage, step voltage, and earth potential analysis.
Interface Options
  • Create and store alternative designs with a simple copy/paste. 
  • Data entry for grid and rods in spreadsheet format. 
  • Data entry for earth model in spreadsheet format. 
  • Grid/rod/profile wizards to setup initial system.  
  • 3D/2D representation of grid and rod configuration.  
  • 3D display of touch voltage, step voltage, and earth potential plots. 
  • Report viewer for text reports. 
  • Cut, copy and paste grid/rod segments in spreadsheet.   
  • Range-checking for simulation parameters. 
  • User-defined thresholds for danger area evaluation. 
  • User-defined colour coding for graphical safety analysis.  
  • Metric and English units. 
  • Group print function. 
Project Setup Options
  • Stores multiple study revisions for each project. 
  • Expanding tree structure to manage project revisions. 
  • Input data and output results saved for each study. 
  • Copy, paste and rename study revisions to compare alternative designs. 
  • Run studies for multiple study revisions as a single action.
A downloadable version of the Ground Mat brochure is available here.
PDF 0.1Mb