Protection and Relay Setting for Electrical Power System Elements

This intensive training presents a comprehensive and systematic description of the concepts and principles of operation and application of protection schemes for various Power System Elements. Our Protective Relay Training course begins with an overview of Power System faults, short circuit calculations, components of Power System Protection Schemes, as well as a full session on microprocessor-based protective relays and their application.

In this course, the Hardware, Software, Settings, and Application areas of the Digital and Numerical Relays are outlined but before this, the main aspects of Microcomputer Technology are summarized. Various study cases for Power System Protection Digital Relays are presented and explained in detail. Therefore, the training course designed to provide the participants with the recent and the new trend Technical Knowledge, Practical Experience, and Good Skills in the Digital Relaying Field.

This Protective Relay Training course has been specifically designed for Electric Utility Engineers, Consultants, and others involved in the selection and coordination of overcurrent protective devices used in medium-voltage Electric Power Distribution Systems. Facilities engineers engaged in the selection of devices for protecting small Power Transformers, as well as the Coordination of those devices with both source-side and load-side protective devices. This course is designed to provide the participants with complete Knowledge about Protection Principles and the Relays Application of Electrical Power System, including Generators, Power Transformers, Transmission Lines, Distribution Lines, Busbar and Motors.

Audience

This course is designed for:

Electrical supervisors
Electrical Engineers
Anyone involved in the Maintenance of industrial protection relays.

Course objectives

By the end of the training, participants will be able to:

Enhance your Knowledge of Basic Electrical System Protection Techniques including Fault Analysis
Techniques, Further your understanding of Protective Devices
Understand Problems Generally faced and solutions successfully adopted by Industry
Learn to calculate the basic Fault Currents flowing in any part of the Electrical System
Improve your Electrical System Protection against Faults and Overvoltage
Understanding Digital differential protections and their application for Busbar, Generator,
Transformer and Transmission Lines
Explain the Principles of Operation of Instantaneous and Time Delay Electromagnetic Relays for
Differential Protective Relays, Ground Protective Relays, Over and Under Voltage Relays, Over Current Protective Relays and Distance Relays
Learn all types of Maintenance Jobs performed on Relays

Course contents

Day–1: Introduction to Protection

Philosophy of System Protection
Role of Protection & Protective Relays
Abnormalities & Faults
Protection Terminology
Protection Devises Numbers

Power System Faults

Different Types of Faults
Incidence of Faults on Power System Equipment
Effects of Power System Faults
The magnitude of Fault Current, Short Circuit
Detection / Clearance of Faults

Day–2: Protection Equipment

Fuses & Isolators
Load Breakers
Circuit Breakers
Auto Reclosers
Automatic Sectionalizer

Measuring Transformers (VT/CT)

CurrentTransformer
- OpenCircuitedCurrentTransformer
- ShortTimeFactor
- AccuracyLimitFactor
- SpecificationofCurrentTransformer
- SecondaryRating, WindingImpedance
- CurrentTransformerTesting:Polarity/Ratio
Potential Measuring Devices
- Residual Connection
- Capacitor Voltage Transformer
- Ratio Check Testing
- Polarity Check Testing
- Magnetizing Curve

Day–3: Differential Protection

Application of Differential Protection
Principles of Circulating Current Differential
Difficulties in Differential Protection
Biased or Percent Differential Relays
The setting of Differential Relays
Balanced Voltage Differential Protection

Distribution System Protection

Discrimination and Coordination
Selective Tripping Plan, Selective Tripping Time
Selective Tripping Times on the Low- Voltage Side
Selective Tripping Times on the High – Voltage Side
Protective Devices for Low Voltage Side
ProtectiveDevicesforHighVoltageSide

Day–4: Over Current Protection

Non-Directional Time Graded System of Feeder (Line)
The setting of Inverse Over-current Relays for Co-ordination
Directional Time and Current Graded System
The setting of Directional Overcurrent Relays
Current Graded System
Instantaneous and IDMT Protection
Over—Reach of Instantaneous Over Current
Definite Time overcurrent Protection of Lines

Distance Protection

Distance Protection of H.V and E.H.V
Stepped Characteristic
Single Stepped Distance, Time Characteristic
Three-Step Distance – Time Characteristic
Power Swings
Carrier Assisted Distance Protection
Carrier Transfer
Carrier Blocking Scheme (Directional Comparison)
Carrier Acceleration
Distance Schemes for Single, Triple Pole Auto Reclosing
Connection of Distance Relays
Protection of Parallel Transmission Lines

Day–5: Bus Bar Protection

Importance of Busbars
Differential Protection of Buses
Autoreclosure
Interlock Overcurrent Protection
Busbar Switching (Transfer) Arrangements
Course Conclusion

Shopping cart