Mastering Circuit Breaker Failure Protection Scheme

Mastering Circuit Breaker Failure Protection Scheme, available at $39.99, has an average rating of 4.05, with 11 lectures, based on 10 reviews, and has 114 subscribers.

You will learn about 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 This course is ideal for individuals who are Engineers, students and field technicians It is particularly useful for Engineers, students and field technicians.

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Summary

Title: Mastering Circuit Breaker Failure Protection Scheme

Price: $39.99

Average Rating: 4.05

Number of Lectures: 11

Number of Published Lectures: 11

Number of Curriculum Items: 11

Number of Published Curriculum Objects: 11

Original Price: $19.99

Quality Status: approved

Status: Live

What 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

Who Should Attend

Engineers, students and field technicians

Target Audiences

Engineers, students and field technicians

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

Course Curriculum

Chapter 1: Introduction

Lecture 1: Introduction

Chapter 2: Circuit Breaker Basics

Lecture 1: Circuit Breaker Basics

Chapter 3: Circuit Breaker Components

Lecture 1: Circuit Breaker Components

Chapter 4: Types of circuit breaker failures

Lecture 1: Types of circuit breaker failures

Chapter 5: Pole Discrepancy a circuit breaker failure condition

Lecture 1: Pole Discrepancy a circuit breaker failure condition

Chapter 6: How Pole Discrepancy is detected

Lecture 1: How Pole Discrepancy is detected

Chapter 7: Busbar Schemes

Lecture 1: Busbar Schemes

Chapter 8: Circuit Breaker Fail Philosophy

Lecture 1: Circuit Breaker Fail Philosophy

Chapter 9: Circuit Breaker Failure Logic

Lecture 1: Circuit Breaker Failure Logic

Chapter 10: Circuit Breaker Faulty Condition

Lecture 1: Circuit Breaker Faulty Condition

Chapter 11: End Fault Protection

Lecture 1: End Fault Protection

Instructors

Elite Engineering
Learn from professionals with field experience in substation

Rating Distribution

1 stars: 1 votes
2 stars: 0 votes
3 stars: 2 votes
4 stars: 3 votes
5 stars: 4 votes

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