CYMGRD is a software for designing and analyzing grounding systems, which was created to help engineers optimize new network designs and strengthen existing networks (of any shape). The advanced features included in the software’s graphical environment , along with efficient analysis algorithms, have made this software an efficient tool that helps engineers create technical and economic designs.

This software allows the design of substations, power plants, factories and buildings. This design can be done for uniform and two-layer horizontal grounds and calculates contact and step voltages according to IEEE standards.

This software receives the magnitude and time period of the fault current, thickness, soil resistance, and body weight from the user and performs the following operations using soil modules, networks

, and diagrams:

1 .

    • The soil module
      measures soil resistivity based on a single or double layer model. It has the ability to plot measured and calculated resistivity and calculates maximum contact voltages and virtual step voltages based on the standard.

2- The network module
calculates the currents propagated by each conductor segment into the soil and determines the soil surface potential using these currents. The ground network can be defined as a single conductor or a set of conductors connected in a square.
The substation layout can also be drawn in two-dimensional and three-dimensional. Underground pipes and adjacent ground networks can also be considered to see their effect on the fault current and surface voltage.

3

  • Diagram Module
    This module summarizes the results of soil resistivity and surface potential analyses on the screen and uses 2D and 3D colored shapes to better present the results.

Key features of CYMGRD software:

  • Design of grounding system for low frequencies (especially substation grounding system design according to IEEE 80-2000 standard)
  • Supports IEEE 80 2000, IEEE 81 1983 and IEEE 837 2002 standards
  • Finite element analysis of ground network conductors and rods
  • Calculation of station ground resistance (Rg) and ground potential rise (GPR)
  • Touch and surface potential analysis inside and outside the network environment, with color display
  • Step voltage analysis
  • Supports symmetric or asymmetric networks of any shape
  • Possibility of modeling return electrodes and distinct electrodes
  • Calculation of maximum single-phase current to ground for a given network
  • And…