Substation Technician Fundamentals

Learn the Core Skills for Substation Operations, Safety, and Equipment Maintenance

What you'll learn

How key substation components—like battery banks, bushings, CTs, and disconnect switches—work and how to inspect and maintain them

Principles of protective relays, including differential, distance, mechanical overcurrent, and directional protection

How to test current transformers (CTs) and ensure protection devices are operating correctly

Step-by-step understanding of relay isolation, control panels, and substation inspections

Insights into SF6 gas, transmission breakers, and motorized disconnect operations

The function and importance of Device 90 and other key automation systems in substations

Requirements

Basic Knowledge of Substations

Description

Master Substation Operation & Maintenance: Become a Skilled Substation TechnicianAre you an aspiring or entry-level technician looking to build a strong foundation in substation operations and maintenance? Do you want to understand the key components that keep electrical substations running safely and efficiently? Then this course is for you. "Substation Technician Fundamentals: Operation and Maintenance" is designed to equip you with the essential technical knowledge needed to work confidently in high-voltage substations. Whether you’re beginning your journey in the utility industry or seeking to reinforce your on-the-job learning, this course covers critical devices, safety practices, and real-world procedures you'll encounter in the field.In this course, you’ll learn how essential substation components such as battery banks, bushings, current transformers (CTs), and disconnect switches function, as well as how to properly inspect and maintain them to ensure reliable performance. You’ll explore the principles behind various types of protective relays, including differential, distance, mechanical overcurrent, and directional protection, and understand how these systems work together to protect electrical infrastructure.We’ll guide you through the process of testing current transformers and checking the operation of protective devices to verify that the substation is functioning as intended. You’ll also gain a step-by-step understanding of relay isolation procedures, the role of control panels, and best practices for conducting thorough substation inspections.The course provides valuable insights into the use of SF6 gas in high-voltage equipment, the operation of transmission breakers, and how motorized disconnect switches are controlled and maintained. Additionally, you'll learn about the function and importance of Device 90 and other key automation systems that play a vital role in modern substation operations.Substations are the heart of electrical transmission and distribution systems. With this course, you’ll gain the clarity and confidence needed to safely maintain and operate substation equipment. The content is concise, practical, and based on real-world industry experience—ideal for anyone preparing for fieldwork or technical certification.Join today and start mastering the fundamentals of substation operation and maintenance. Your journey to becoming a skilled substation technician starts here.

Overview

Section 1: Introduction

Lecture 1 Introduction

Section 2: Substation Equipment

Lecture 2 Substation Disconnect Switches

Lecture 3 SF6

Lecture 4 Transmission Breaker

Lecture 5 Motorized Disconnect

Lecture 6 Battery Bank

Lecture 7 Battery Chargers

Lecture 8 Bushings

Lecture 9 Control Panels

Lecture 10 Instrument Transformer

Section 3: Substation Relay and Protection

Lecture 11 Directional Protection Basic

Lecture 12 Distance Protection

Lecture 13 Differential Relay

Lecture 14 Device 90

Lecture 15 Gas Relay

Lecture 16 Mechanical Overcurrent Relays

Section 4: Substation Planning and Testing

Lecture 17 CT Testing

Lecture 18 Inspection of Substations

Lecture 19 Relay Isolation Planning

Section 5: Conclusion

Lecture 20 Conclusion

Apprentice substation technicians and electricians,Utility workers looking to transition into substation roles,Electrical engineering students interested in practical applications,Maintenance professionals seeking to understand substation infrastructure,Anyone working around high-voltage equipment who wants to stay safe and informed