DEFINE | Management Consultancy & Training

ELECTRICAL PROTECTION

Location

London, UK

Date

From Date: 04-Mar-2024
To Date: 08-Mar-2024

Duration

5 Days

Language

English

Discipline

ELECTRICAL & POWER ENGINEERING

Introduction

Efficient and Safe Power Protection systems are vital to ensure no overload may occur and a smooth current is maintained at the level determined for the demand required. Safety systems also demand the highest standards of operations and maintenance and therefore Relay Protection Systems play a large part in the Electrical Power Process.

This course is designed to inform participants how Power systems operate & and safely maintain protection Systems.

The workshop features an introduction covering the need for protection, fault types and their effects, simple calculations of short circuit currents and system earthing.

Objective

This course is designed to the participants:

Understand the electrical characteristics of various electrical faults
Identify different types of protection systems, understand the purpose of each type of protection system and identify the zone of protection for a given relay
Recognize modern protective relays and understand their basic operation
Appreciate the characteristics and importance of voltage transformers and current transformers in achieving dependable and accurate electrical protection systems
Understand the concept of protection system discrimination and appreciate its importance in improving security of supply
Be familiar with the requirements for testing of protection systems
An Increased level of knowledge of the theoretical aspects and Operation of Protective Relays
Familiarity with the application, basic connections and internal schematics
Ability to test several Relays (Electromagnetic & Solid State), including type 50 / 51, type 27 / 59, etc …
The Safety rules applicable
The nature of different types of electrical faults and the effect these faults can have on company assets
Understanding of electrical fault protection systems
Practical solutions for specifying and operating protection systems
Comprehensive understanding of principles and selection of protection relays and protection schemes
Hands on work shop for short circuit & relay coordination using ETAP Power station.

Audience

The course is aimed at Managers, Engineers, and Technicians responsible for the operation and maintenance of distribution equipment who will benefit from sharing experiences in the planning, organization, and implementation of maintenance activities.

Content

AC Breaking & Fundamentals of Short circuit

Causes of Faults
Sources of short-circuit Currents
Fundamentals of Short-Circuit Currents
Three-Phase Short Circuits
Usefulness of Fault Calculation in the Study of Power System
Symmetrical Fault Currents
Asymmetrical Fault Currents
Types of Faults/Magnitudes
Symmetrical Components
Importance and construction of sequence networks
Calculation of asymmetrical faults using symmetrical components and MVA methods
Overview to PU systems
Related international standards
Case studies using computer simulations (using ETAP Power station)

Introduction to Protective systems

Relay Operation and Fundamentals
CT & VT
Different type of Relays (Functions, theory of operations & objectives).
Classification of Faults and Protection Philosophy
Relay co-ordination study
Neutral earthing configurations.
CT Hazards
VT Hazards
Modern protection relays/Microprocessor used with switchgear

Protection Schemes

Feeder protection cable feeders and overhead lines.
Transformer protection.
Switchgear (busbar) protection.
Motor protection relays.
Generator protection.
Recommended protection schemes of international standards and some brand name manufactures (Siemens, Schneider, etc…).
Management of protection.

Co-ordinated Distribution Networks

Methods of selectivity’s.
Cable Damage curve.
Motor starting curve.
Transformer Z-curve.
Fuse characteristics.
LV Circuits breakers tripping curves (TM, SST, ..)
Setting rules for coordination study.
Principles of Protection Co-ordination, Discrimination and Relay Settings.
Generator Protection
Transformer Protection
Line Protection
Cable Protection
Motor Protection
Over-current Co-ordinations. New philosophies/constrains of co-ordination studies.
IEEE Standard 242.
Case studies using computer simulations (using ETAP Power station)

Relaying Testing, Maintenance & Failure Analysis

CT & VT testing
Relays testing
Maintenance intervals
Preventive maintenance & Corrective maintenance
Troubleshooting and repair.
Maintenance / Acceptance Testing
Relay Installation and Removal
Test Plug Usage
Primary & Secondary Test Methods.
Maintenance of Protection Relays and Reliability.

NOTE:

Pre & Post Tests will be conducted.

Case Studies, Group Exercises, Group Discussions, Last Day Review &Assessments will

be carried out.

Certificate

Define Management Consultancy & Training Certificate of course completion will be issued to all attendees.

Methodology

A highly interactive combination of lectures and discussion sessions will be managed to maximize the amount and quality of information and knowledge transfer. The sessions will start by raising the most relevant questions, and motivate everybody find the right answers. You will also be encouraged to raise your own questions and to share in the development of the right answers using your own analysis and experiences. Tests of multiple-choice type will be made available on daily basis to examine the effectiveness of delivering the course.

All presentations are made in excellent colorful power point. Very useful Course Materials will be given.

30% Lectures
30% Workshops and work presentation
20% Group Work& Practical Exercises
20% Videos& General Discussions

Course Details