This How To… shows you how to carry out a typical substation grounding design using the AutoGrid Pro software package. A step-by-step approach is used to illustrate how to use the program to input your data, carry out the computation and explore the computation results.

A simple grounding problem is illustrated in the topic entitled Simple Grounding Problem Description.

A grounding design analysis using AutoGrid Pro is normally carried out in steps as follows:

Getting Started

Step 1: Starting AutoGrid Pro

Step 2: How To Create A Project and A Scenario

Step 3: How To Define Project Properties

Determining a Soil Model That is Equivalent to the Real Earth Structure

Step 4: Soil Resistivity Data Entry

Develop a Preliminary Grounding System Configuration

Step 5: Grounding Grid Design

Define the Characteristics of the Transmission Lines Network and Determine Fraction of the Total Fault Current Flows into the Grounding Grid of the Studied Substation

Step 6: Fault Current Distribution Analysis

Determine Safety Criteria based On Standard or User Defined

Step 7: Safety Analysis

Selecting Plots and Reports

Step 8: Plots & Reports

Carrying Out Computations and Producing Plots and Reports

Step 9: Process

Analyzing Computation Plots and Reports

Step 10: Results Interpretation

Reinforcing The Grounding System (optional)

Step 11: Exponential Grid Design