The installation of protection systems is crucial for safeguarding distribution equipment against faults. Protective relays play a key role in identifying and isolating faulted sections to ensure uninterrupted power supply to other parts of the system. Additionally, lightning arresters divert excessive energy from voltage surges to the ground.

Course Objectives:

Delegates will gain a detailed appreciation of the following:

The nature of different types of electrical faults and the affect these faults can have on distribution company assets
Understanding of electrical fault protection systems utilized within the electricity distribution industry
Practical solutions for specifying, operating protection systems
Comprehensive understanding of principles, selection, testing maintenance, and troubleshooting of protection relays
The requirement for testing of relays and protection systems
Each course participant will receive a copy of the comprehensive course notes. The presenter will outline and discuss the topics using computer displays, CD displays, and Videotapes.
The course is designed to have an interactive format to maximize delegate participation. Questions and answers are encouraged throughout and at the daily sessions. Needs-Based case-studies and examples will be discussed in problem-solving workshop sessions.

Who Should Attend?

Designers, Engineers, and Technicians from Distribution Companies and Power Utilities, Engineering Professionals in the Electricity Supply Industry, Petrochemical Companies, Buildings, and Service Managers who have to deal with the aspect of electrical and industrial power system protection, control, and operation. Participants need no specific requirements other than good understanding of electricity and magnetism and some relevant experience.

Course Outlines:

Introduction and Basic Concepts of Protection Relaying

Introduction and aims
Course Overview and Objectives
Discussion with all participants (experience and current responsibilities)
Fundamentals of Protection Practice
Basic Concepts: Electrical Faults and Protection, Short Circuit Fault Calculations

Classification and Function of Protection Equipment

Classification and function of relays: Classification, Electromagnetic Relays, Computerized Protection
HV fuses
Current Transformers and Voltage Transformers

Protection Systems of Equipment

Protection systems (operator’s notes)
Purpose of protective relays
Protection Schemes and Principles
Overload and Earth Leakage Protection
Transformer Protection
Bus Protection
Directional Protection
Primary and Backup Protection
Generator Protection

Faults and Protection of Network

Line Protection Schemes
Protection system zoning and class exercises
Protection system failure incident (class discussion)
Group discussion on faults and appropriate action
Over-current and Earth Fault protection (System grading and coordination)

Feature and Characteristics of Protection Relays

Characteristic Curve Plotting (Class Exercise).
Protection System Maintenance (Standard Procedures).
Protection Relay Field Testing (Sample Procedures).
Case Studies: Protection of Distribution Systems Using Modern Electronic Devices (ALSTOM, SCHNEIDER, etc)
Conclusion: General Discussion, Feedback Survey, Closing.

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