Disclosure: when you buy through links on our site, we may earn an affiliate commission.

Circuit Breaker Failure Protection Scheme

How CBF is implemented in Substations, Power Plants & Electrical Systems
3.8
3.8/5
(4 reviews)
36 students
Created by

8.5

CourseMarks Score®

9.9

Freshness

7.3

Feedback

7.8

Content

Platform: Udemy
Video: 1h 58m
Language: English
Next start: On Demand

Top Electrical Engineering courses:

Detailed Analysis

CourseMarks Score®

8.5 / 10

CourseMarks Score® helps students to find the best classes. We aggregate 18 factors, including freshness, student feedback and content diversity.

Freshness Score

9.9 / 10
This course was last updated on 11/2021.

Course content can become outdated quite quickly. After analysing 71,530 courses, we found that the highest rated courses are updated every year. If a course has not been updated for more than 2 years, you should carefully evaluate the course before enrolling.

Student Feedback

7.3 / 10
We analyzed factors such as the rating (3.8/5) and the ratio between the number of reviews and the number of students, which is a great signal of student commitment.

New courses are hard to evaluate because there are no or just a few student ratings, but Student Feedback Score helps you find great courses even with fewer reviews.

Content Score

7.8 / 10
Video Score: 7.8 / 10
The course includes 1h 58m video content. Courses with more videos usually have a higher average rating. We have found that the sweet spot is 16 hours of video, which is long enough to teach a topic comprehensively, but not overwhelming. Courses over 16 hours of video gets the maximum score.
Detail Score: 10.0 / 10

The top online course contains a detailed description of the course, what you will learn and also a detailed description about the instructor.

Extra Content Score: 5.5 / 10

Tests, exercises, articles and other resources help students to better understand and deepen their understanding of the topic.

This course contains:

0 article.
0 resource.
0 exercise.
0 test.

Table of contents

Description

The circuit breaker failure protection provides a backup protection in the case, that the local circuit breaker fails to clear a system fault.
In this training we have started from basic concepts, explained circuit breaker symbol and how circuit breaker look like in substation. We have discussed in training how to represent circuit breaker by ANSI code, difference of circuit breaker and line isolator. What are different functions that are performed by circuit breaker, what is arc, how to quench arc, what are media to quench arc, what will happen if arc is not quenched.
We have discussed different components of circuit breaker that include CB closing coil, tripping coils, auxiliary contacts, normally open and normally close contacts, simplified protection system consisting of DC battery banks/charger, relays, Current and voltage transformers, why CT & VTs are required at substation, what do you understand by CT ratio 1000/1, use of redundant DC supplies, why DC is used not AC for control & trip functions, how circuit breaker spring is charge, circuit breaker operation, what is trip free/ready to trip function of CB, Trip Circuit Supervision feature, DC supply supervision, trip coil supervision, TCS Relay, control & protection DC supplies & Tripping coils, what is typical tripping and closing time of circuit breaker.
What are different types of breaker failure that can occur in power system:
•Circuit Breaker Failure due to Mechanism Fail
•Circuit Breaker Failure due to non-interruption of fault current
•Circuit Breaker Failure due to DC control/trip supply fail
•Circuit Breaker Failure due to tripping coil failure
•Circuit Breaker Failure due to low DC voltage
•Circuit Breaker Failure due to Aux contact failure
•Circuit Breaker Failure due to Fire
•Circuit Breaker Failure due to delayed tripping
•Circuit Breaker Pole Discrepancy
What is Circuit Breaker Pole Discrepancy:
•Single pole & three pole circuit breaker operated mechanisms
•advantages of single pole tripping & reclosing
•How single pole reclosing support system
•What is meaning of pole discrepancy
• How pole discrepancy is detected in system
• Pole discrepancy circuit working
•Timer circuit in pole discrepancy
•Stage 1 & Stage 2 operations of pole discrepancy
•Pole discrepancy during closing command & tripping command.
•Re-trip and 2nd stage
•What is typical time settings for Pole discrepancy
•Creation of 3I0 zero sequence current during pole discrepancy condition
•How Pole Discrepancy can lead to indiscriminate tripping in the network
Busbar Schemes:
In order to understand it is good idea to learn about busbar schemes, we will go through following busbar schemes.
•Single Bus Single Breaker Scheme
•Double Bus Single Breaker Scheme
•One and half breaker scheme
•Mesh Breaker schemes
•double bus and double breaker
•How to change over load from one bus to another bus without interruption
•Advantages of different busbar scheme
Circuit Breaker Fail Philosophy:
•Circuit breaker failure protection using relay coordination at low / MV levels
•What to do & protect if one breaker fail
•Understand basic concept of breaker failure, if some one understand well can design and understand all CBF protection schemes & logic
•CBF protection example in one and half breaker scheme,  how to protect system if middle breaker fail , How to protect system if main breaker fail.
•CBF protection example in double bus double breaker busbar, consider the case of bus coupler & bus sectionalizer.
Circuit Breaker Failure Logic, Function:
•Circuit Breaker Failure logic block
•CBF initiation function
•CBF current guard
•CBF Low current mode
•CBF CB Aux contact input
•CBF timer
•CBF stage 1 & Stage 2
•CBF for Mechanical Protection not involving current
•CBF protection and End fault protection
•CBF Re-trip & 2nd stage faulty CB isolation from sources
•CBF when Circuit Breaker is faulty
•CBF and lockout function, 86 close block relay
•CBF & CB close blocking
•CBF typical times for stage 1 & stage 2 & when CB faulty

By completing this course you will be able to understand circuit breaker failure relay function, Circuit breaker failure scheme/trip matrix, how CBF stage 1 & 2 operate, CBF protection for different busbar schemes.

I wish you best of luck for the course.

Best Regard
Elite Engineering

You will learn

✓ What are different types of breaker failure that can occur in power system:
✓ Circuit Breaker Failure due to Mechanism Fail
✓ Circuit Breaker Failure due to non-interruption of fault current
✓ Circuit Breaker Failure due to DC control/trip supply fail
✓ Circuit Breaker Failure due to tripping coil failure
✓ Circuit Breaker Failure due to low DC voltage
✓ Circuit Breaker Failure due to Aux contact failure
✓ Circuit Breaker Failure due to Fire
✓ Circuit Breaker Failure due to delayed tripping
✓ Circuit Breaker Pole Discrepancy
✓ What is Circuit Breaker Pole Discrepancy:
✓ Single pole & three pole circuit breaker operated mechanisms
✓ advantages of single pole tripping & reclosing
✓ How single pole reclosing support system
✓ What is meaning of pole discrepancy
✓ How pole discrepancy is detected in system
✓ Pole discrepancy circuit working
✓ Timer circuit in pole discrepancy
✓ Stage 1 & Stage 2 operations of pole discrepancy
✓ Pole discrepancy during closing command & tripping command.
✓ Re-trip and 2nd stage
✓ What is typical time settings for Pole discrepancy
✓ Creation of 3I0 zero sequence current during pole discrepancy condition
✓ How Pole Discrepancy can lead to indiscriminate tripping in the network
✓ Busbar Schemes:
✓ Single Bus Single Breaker Scheme, Double bus single breaker scheme, one and half breaker scheme, double bus double breaker scheme, mesh breaker scheme
✓ How to change over load from one bus to another bus without interruption, advantages of different busbar scheme
✓ Circuit Breaker Fail Philosophy:
✓ Circuit breaker failure protection using relay coordination at low / MV levels
✓ What to do & protect if one breaker fail
✓ Understand basic concept of breaker failure, if some one understand well can design and understand all CBF protection schemes & logic
✓ CBF protection example in one and half breaker scheme, how to protect system if middle breaker fail
✓ How to protect system if main breaker fail. CBF protection example in double bus double breaker busbar, consider the case of bus coupler & bus sectionalizer.
✓ Circuit Breaker Failure logic block, CBF initiation function, CBF current guard, CBF Low current mode, CBF CB Aux contact input,
✓ CBF timer, CBF stage 1 & Stage 2, CBF for Mechanical Protection not involving current, CBF protection and End fault protection
✓ CBF Re-trip & 2nd stage faulty CB isolation from sources
✓ CBF when Circuit Breaker is faulty
✓ CBF and lockout function, 86 close block relay

Requirements

• Basic concepts of electrical engineering

This course is for

• Engineers, students and field technicians

How much does the Circuit Breaker Failure Protection Scheme course cost? Is it worth it?

The course costs $12.99. And currently there is a 85% discount on the original price of the course, which was $84.99. So you save $72 if you enroll the course now.

Does the Circuit Breaker Failure Protection Scheme course have a money back guarantee or refund policy?

YES, Circuit Breaker Failure Protection Scheme has a 30-day money back guarantee. The 30-day refund policy is designed to allow students to study without risk.

Are there any SCHOLARSHIPS for this course?

Currently we could not find a scholarship for the Circuit Breaker Failure Protection Scheme course, but there is a $72 discount from the original price ($84.99). So the current price is just $12.99.

Who is the instructor? Is Elite Engineering a SCAM or a TRUSTED instructor?

Elite Engineering has created 4 courses that got 4 reviews which are generally positive. Elite Engineering has taught 42 students and received a 3.8 average review out of 4 reviews. Depending on the information available, Elite Engineering is a TRUSTED instructor.
Learn from professionals with field experience in substation
Elite Engineering is an engineering academy that is formed by professional with experience in the field of electrical, substation, power transformers, power plants, transmission lines, project management, errection, installation & testing & commissioning.

Trainers have up to 20 years of field experience at various voltage levels starting from low voltage, 11kV, 33kV, 66kV, 132kV, 220kV, 380kV, 500kV AC system & 660kV HVDC voltage level.

Experienced gain while serving in Middle East, EU, South Asia while serving several companies like Saudi Electricity, Saudi Aramco, SABIC, Marafiq, Siemens, ABB, Alstom, AREVA.

Excellent knowledge and delivering the theory and practical concept with such an ease. 

Trainer possesses strong competency in power plant and substation secondary system, scheme like busbar protection, breaker failure protection, substation automation, transformer differential, substation schemes lines/transformer/reactor/busbar, testing & commissioning of relays, scheme testing, testing of GIS/AIS substation equipment, testing of generator protection, on site trainings.




Show more

8.5

CourseMarks Score®

9.9

Freshness

7.3

Feedback

7.8

Content

Platform: Udemy
Video: 1h 58m
Language: English
Next start: On Demand

Students are also interested in

Review widget (for course creators):

Circuit Breaker Failure Protection Scheme rating
Code for the widget (just copy and paste it to your site):
<a href="https://coursemarks.com/course/circuit-breaker-failure-protection-scheme/" target="_blank" title="Circuit Breaker Failure Protection Scheme on Coursemarks.com"><img border="0" src="https://coursemarks.com/widget/85.svg" width="200px" alt="Circuit Breaker Failure Protection Scheme rating"/></a>