Substation Switch gear & protection
Teacher
Madhava Rao K
Category
Core Courses
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Course Name : Substation Switch gear & protection
Code(Credit) : CUTM1052(2-1-1)
Course Objectives
- •To understand the different components of substation
•To understand the protection of different equipment in power system
Learning Outcomes
Able to understand the performance of different protection methods of different equipment
Able to understand the different components of substation and their operation
Able to design the power system switch gear
Able to understand the Maintenance of substation
Able to understand the protection control systems
Course Syllabus
Module I: Substation Systems (6 Hours)
Introduction to Substation System: Definition of substation, necessity of substation, essential features, types of substation, single line diagram of substation, List and functions of each component of substation. Auxiliary systems, Over head earthing screen, Sub-station earthing system.
Practice:
1. Layout Design of 132KV & 220KV substation using MATLAB
2. Layout Design of 400KV & 750KV substation using MATLAB as per IEEE standards
Module II: Operation & Maintenance of Substations (10 Hours)
Testing and maintenance of Bus Bars, and Isolators: Types and ratings – Bus bar configuration, Tests on Bus bars. Types of isolators and ratings, Load Break switches, Maintenance of isolators, testing and maintenance of Power Transformers, Current and Voltage Transformers and Insulators: Preliminary tests, Final tests, Impulse test, Partial discharge test, Transformer maintenance. Current Transformer tests, Potential Transformer tests. CT and PT maintenance, Tests and maintenance of insulator
Practice:
3. Maintenance tests of CT & PT of substation as per manufacturers Hand book
4. Maintenance tests of Lightening Arrestor & Circuit Breaker of substation as per manufacturers Hand book
5. Maintenance tests of transformer as per manufacturers Hand book
Module III: Protection & System components (5 Hours)
Need for protective schemes, Nature and Cause of Faults, Types of Fault, Effects of Faults, Zones of Protection, Primary and Backup Protection, Essential Qualities of Protection, Classification of Protective Relays, Automatic Reclosing, Current Transformers for protection, Voltage Transformers for Protection.
Module IV: Relays (4 Hours)
Introduction,-Electromechanical Relays, Static Relays – Merits and Demerits of Static Relays, Numerical Relays, Comparison between Electromechanical Relays and Numerical Relays.
Practice:
6. Designing of a Digital Relay
Module V: Relay Operations (7 Hours)
Introduction, Time – current Characteristics, Current Setting, Time Setting, Overcurrent Protective Schemes, Reverse Power or Directional Relay, Protection of Parallel Feeders, Protection of Ring Mains, Earth Fault and Phase Fault Protection, Combined Earth Fault and Phase Fault Protective Scheme, Phase Fault Protective Scheme, Directional Earth Fault Relay, Static Overcurrent Relays, Numerical Overcurrent Relays.
Module VI: Protection control systems (5 Hours)
Pilot Relaying Schemes: Introduction, Wire Pilot Protection, Carrier Current Protection
Numerical Differential Relays: Simple Differential Protection, Percentage or Biased Differential Relay, Differential Protection of 3 Phase Circuits, Balanced (Opposed) Voltage Differential Protection.
Rotating Machines Protection: Introduction, Protection of Generators
Transformer and Bus zone Protection: Introduction, Transformer Protection, Bus zone Protection, Frame Leakage Protection
Practice:
7. Design of Protection Scheme using MATLAB
Module VII: Circuit Breakers (8 Hours)
Introduction, Fault Clearing Time of a Circuit Breaker, Arc Voltage, Arc Interruption, Restriking Voltage and Recovery Voltage, Current Chopping, Interruption of Capacitive Current, Classification of Circuit Breakers, Air – Break Circuit Breakers, Oil Circuit Breakers, Air – Blast Circuit Breakers, SF6 Circuit Breakers, Vacuum Circuit Breakers, High Voltage Direct Current Circuit Breakers, Rating of Circuit Breakers, Testing of Circuit Breakers.
Practice:
8. Design & simulation of Circuit breaker using 3DS Tools
Project:
Analysis of critically operating power system using MATLAB/DYMOLA
Session Plan
Session 1
Introduction to Substation System: Definition of substation, necessity of substation
Session 4
List and functions of each component of substation
Session 5
Auxiliary systems, Over head earthing screen, Sub-station earthing system
Session 7
Testing and maintenance of Bus Bars, and Isolators: Types and ratings
Session 9
Types of isolators and ratings, Load Break switches, Maintenance of isolators
Session 11
Current and Voltage Transformers and Insulators
Session 12
Preliminary tests, Final tests, Impulse test, Partial discharge test, Transformer maintenance
Session 16
Maintenance tests of Insulators of substation
Session 18
Types of Fault, Effects of Faults, Zones of Protection, Primary and Backup Protection
Session 19
Essential Qualities of Protection, Classification of Protective Relays
Session 20
Automatic Reclosing, Current Transformers for protection
Session 23
Static Relays – Merits and Demerits of Static Relays, Numerical Relays
Session 24
Comparison between Electromechanical Relays and Numerical Relays
Session 25
Designing of a Digital Relay
https://www.youtube.com/watch?v=SsaE0OJAqNI&list=PL9RBVUcm7az9EmC_r9fIL6jnOj5oq7KQu&index=2
Session 26
Introduction, Time – current Characteristics, Current Setting, Time Setting
Session 27
Overcurrent Protective Schemes, Reverse Power or Directional Relay
Session 28
Protection of Parallel Feeders, Protection of Ring Mains
https://www.youtube.com/watch?v=JMZj8utt9bw&list=PLZPuItIGPYLP82ssWOkV6H0puJZYO5jsA&index=5
Session 29
Earth Fault and Phase Fault Protection, Combined Earth Fault and Phase Fault Protective Scheme
Session 30
Phase Fault Protective Scheme, Directional Earth Fault Relay
https://www.youtube.com/watch?v=S8sJaCdp1xk&list=PLduBE5Z3PoMX7NQ6OUhk6GRjnhQy4JaQ3
Session 33
Pilot Relaying Schemes: Introduction, Wire Pilot Protection, Carrier Current Protection
Session 34
Numerical Differential Relays: Simple Differential Protection, Percentage or Biased Differential Relay
Session 35
Differential Protection of 3 Phase Circuits, Balanced (Opposed) Voltage Differential Protection
Session 37
Transformer and Bus zone Protection: Introduction, Transformer Protection, Bus zone Protection, Frame Leakage Protection
Session 38
Introduction, Fault Clearing Time of a Circuit Breaker, Arc Voltage
Session 41
Classification of Circuit Breakers, Air – Break Circuit Breakers, Oil Circuit Breakers
Session 42
Air – Blast Circuit Breakers, SF6 Circuit Breakers, Vacuum Circuit Breakers
Session 43
High Voltage Direct Current Circuit Breakers, Rating of Circuit Breakers, Testing of Circuit Breakers
Session 44
Design & simulation of Circuit breaker using 3DS Tools
Session 45
Design & simulation of Circuit breaker using 3DS Tools
Case Studies
Case Studies
Our Main Teachers
He is working as an Associate professor in Electrical & Electronics Engineering and is associated with Centurion university since 2011. He dis his Post graduate in High voltage engineering. He is having 15 years of experience in teaching & learning process. Area of Interest: Power systems and High voltage Engineering Youtube video link: https://www.youtube.com/watch?v=yL5egmaRxUM