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18 - EEE - Electrical & Electronics Engineering


EEE 160 - CYMGRD Software

Code Start Date Duration Venue
EEE 160 28 April 2025 5 Days Istanbul Registration Form Link
EEE 160 23 June 2025 5 Days Istanbul Registration Form Link
EEE 160 18 August 2025 5 Days Istanbul Registration Form Link
EEE 160 13 October 2025 5 Days Istanbul Registration Form Link
EEE 160 08 December 2025 5 Days Istanbul Registration Form Link
Please contact us for fees

 

Course Description

The CYMGRD software is a substation grounding grid design and analysis program specially designed to help engineers optimize the design of new grids and reinforce existing grids, of any shape, by virtue of easy to use, built-in danger point evaluation facilities. User-friendly data entry, efficient analysis algorithms and powerful graphical facilities render the CYMGRD software an efficient tool that helps the engineer arrive at technically sound and economical designs. The CYMGRD software will be used along the course.

Course Objectives

  • Understanding the objectives of the grounding system
  • Understanding the grounding grid analysis
  • Identifying the conditions of danger
  • Understanding the selection of grounding conductors and rods
  • Evaluating ground resistance
 

Who Should Attend?

  • Engineers
  • Technicians
  • Supervisors
  • Anyone who is involved in substation grounding grid design and analysis

Course Details/Schedule

Day 1

  • The objectives of the grounding system
  • Definition of relevant terms: Ground Potential Rise (GPR), Touch, Step and Mesh Voltages
  • The need for grounding
  • Conditions of danger
  • The grounding problem
  • Range of tolerable current
  • Tolerable body current limit
  • Accidental ground circuit
  • Criteria of tolerable voltage
  • Selection of grounding conductors and rods
  • Soil characteristics
  • Soil structure and selection of soil model

Day 2

  • Evaluation of ground resistance
  • Determination of maximum grid current
  • Ground grid design procedure
  • Soil Resistivity Measurements (e.g. by the Wenner method)
  • Selection of adequate soil model
  • Conductor sizing
  • Calculation of maximum permissible touch and step voltages
  • Preliminary grounding grid design
  • Calculation of the grid resistance
  • Calculation of the maximum grid current
  • Calculation of the Ground Potential Rise
  • Calculation of the mesh voltages

Day 3

  • Calculation of the step voltages
  • Verification of the touch voltage criteria
  • Verification of the step voltage criteria
  • Modifications of the preliminary design
  • Final design
  • Grounding Grid Design Analysis with CYMGRD
  • CYMGRD Presentation
  • CYMGRD Graphical User Interface
  • Presentation of the different menus
  • Presentation of the different views
  • Notions of study and project
  • Soil Resistivity Assessment

Day 4

  • Entry of onsite soil resistivity measurements
  • Selection of adequate soil model
  • Safety assessment
  • Calculation of maximum permissible touch voltage
  • Calculation of maximum permissible step voltage
  • Conductor sizing
  • Entry of earth fault current
  • Selection of conductor material
  • Calculation of the conductor minimum required size
  • Grounding grid analysis
  • Split factor and decrement factor calculation
  • Entry of the grid data

Day 5

  • Calculation of the maximum grid current
  • Calculation of the grid resistance
  • Calculation of the Ground Potential Rise
  • Verification of the touch voltage criteria
  • Touch and Surface potentials contours
  • Contour color coding and Safety analysis
  • Spot-check danger point evaluation
  • Verification of the step voltage criteria
  • Profile voltage plots
  • Inspecting potential profile plots
  • Remedial Measures for Hazardous Situations

 

 

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