Substation Operation and Maintenance Techniques

ICTD International Centre for Training and Development

How long?

  • 5 days
  • in person

What are the topics?

ICTD International Centre for Training and Development


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Who should attend

  • Utility and Industrial Electrical Engineers and Engineering Technicians
  • Transmission planning engineers
  • Distribution planning engineers
  • Substation Design Engineers
  • Consulting Electrical Engineers
  • Substation network management engineers
  • Substation maintenance and construction engineers & technologists

About the course

Electrical Substation maintenance is a key component of any substation owner's electrical maintenance program. It has been well documented that failures in key procedures such as racking mechanisms, meters, relays and busses are among the most common source of unplanned outages. Electrical transmission, distribution and switching substations generally have switching, protection and control equipment and one or more transformers.

Our electrical substation maintenance course focuses on maintenance and testing of switchgear, circuit breakers, batteries and protective relays.

This course will cover the maintenance and testing requirements for common substation devices, including power transformers, oil, air and vacuum circuit breakers, switchgear, ground grid systems, batteries, chargers and insulating liquids. This course focuses on what to do, when to do it and how to interpret the results from testing and maintenance.

Course Objectives

On successful completion of this course, participants will:

  • Know substation types, applications, components and safety procedures
  • Learn maintenance and testing methods for medium-voltage circuit breakers
  • Understand how to perform insulation resistance, contact resistance on air, oil and vacuum breakers, and tank loss index on oil circuit breaker and vacuum bottle integrity tests on vacuum breaker
  • Understand switchgear arrangement, torque requirements, insulation systems and maintenance intervals
  • Know how to perform switchgear inspection and maintenance in lab
  • Know battery types, applications, systems and components
  • Perform battery maintenance and testing in lab

Course Outline


Substation Overview

  • Purpose of a Substation
  • Components of a Power System
  • Types of Substations
  • Substation Switching Configurations
  • Distribution Substation Configurations
  • Substation Components
  • Metering in Substations
  • Relaying in Substations

Switchgear Maintenance and Testing

  • Arrangement of Components
  • Maintenance Intervals
  • Maintaining the Insulation System
  • Maintaining Auxiliary Components
  • Torque Requirement for Switchgear Assemblies
  • Electrical Testing of Switchgear


Circuit Breaker Fundamentals

  • Circuit Breaker Functions
  • Ratings
  • Principles of Arc Interruption
  • Breaker Insulation Media
  • Insulation Requirements
  • Circuit Breaker Controls
  • Methods of Operation
  • Electrically Operated Mechanisms


Circuit Breaker Maintenance and Testing

  • Overall Maintenance
  • Electrical Testing
  • High-Potential Testing (Hi-Pot)
  • Principles of Power Factor Testing
  • Operation and Timing Tests

Storage Batteries

  • Systems and Components
  • Applications
  • Battery Types


Battery Maintenance and Testing

  • Battery In-Service Operation
  • Temperature and Battery Life
  • Battery Safety Factors
  • Safety Hazards
  • Safety Equipment
  • Safety Precautions
  • Battery Inspections
  • Corrective Actions
  • Equalizing Charge (Lead-Acid Only)
  • Battery Measurement Techniques


Overview of Protective Relays

  • Classification of Relays
  • Protective Zones
  • Fundamentals of Electromechanical Design
  • Relay Construction
  • Time Characteristics
  • Protective Relay Maintenance and Testing
  • Mechanical and Visual Inspections
  • Preventive Maintenance Testing
  • Acceptance Testing
  • Testing Techniques
  • General Tests
  • Relays in Substations

Course Methodology

A variety of methodologies will be used during the course that includes:

  • (30%) Based on Case Studies
  • (30%) Techniques
  • (30%) Role Play
  • (10%) Concepts
  • Pre-test and Post-test
  • Variety of Learning Methods
  • Lectures
  • Case Studies and Self Questionaires
  • Group Work
  • Discussion
  • Presentation

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Substation Operation and Maintenance Techniques at ICTD International Centre for Training and Development

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