The primary objective of this workshop is to enhance the understanding of Power System Protection systems among plant operators, electricians, field technicians, and engineers. By gaining a comprehensive understanding of power systems and implementing proper management practices, participants can significantly improve plant efficiency, performance, and overall safety.

This workshop is specifically designed to provide a comprehensive understanding of Power System Protection on both theoretical and practical levels. It starts at a basic level, aimed at easing engineers and technicians into the process of studying and serving as a refresher for those already familiar with the foundational topics covered. As the workshop progresses, it delves into more advanced applications.

The workshop begins with an introduction that highlights the importance of protection, different fault types, and their effects, as well as simple calculations of short circuit currents and system earthing. It also includes practical exercises to reinforce learning, such as simple fault calculations, relay settings, and the evaluation of a current transformer's magnetization curve.

By the end of the workshop, participants will have gained valuable knowledge and practical skills that can be directly applied to their roles. This will contribute to improved Power System Protection, enhanced plant efficiency and performance, and an increased level of safety for all individuals involved.

Course Objectives:

Participants attending this program will gain a detailed appreciation of the following:

The need for protection
An overview of power system fault analysis
Protection fundamentals
Relay transducers, both current and future
System grounding principles
Over current earth fault protection
Coordination principles
Transformer protection
Generator protection
Bus protection
Motor protection
Line and feeder protection
Principles of relay application

Who Should Attend?

· Electrical Engineers

· Project Engineers

· Design Engineers

· Instrumentation and Design Engineers

· Electrical Technicians

· Field Technicians

· Electricians

· Plant Operators

Course Outlines:

Need For Protection

Selectivity, stability, sensitivity, speed, reliability, dependability, security

Fault Types & Their Effects

Active, incipient, passive, transient, asymmetrical
Phase & earth faults

Simple Calculation of Short

Circuit Currents

Revision of simple formulae
Calculation of short circuit MVA & fault currents
Worked examples

System Earthling

Solid, impedance, touch potentials
Effect of electric shock
Earth leakage protection

Protection System Components

Including Fuses

History, construction & characteristics
Energy let through & applications

Instrument Transformers

Current transformers: construction, performance, specification, magnetization curves
Voltage transformers: types, accuracy, connections

Circuit Breakers

Purpose & duty, clearance times, types

Tripping Batteries

Battery types, chargers, maintenance, D.C. circuitry

Relays

Inverse definite minimum time (IDMT) relay
Construction principles and setting
Calculation of settings - practical examples
New Era - modern numerical relays & future trends

Practical Demonstrations And Sessions

Including simple fault calculations and relay settings

Co-Ordination by Time Grading

Problems in applying IDMT relays

Low Voltage Networks

Air & molded circuit breakers
Construction and installation
Protection tripping characteristics
Selective co-ordination (current limiting, earth leakage protection, cascading)

Principles of Unit Protection

Differential protection - basic principles

Filters