Low Impedance Busbar Protection Panel Schematics

Dear All,

Welcome to the course about "Low Impedance Busbar Protection Panel Schematics". This training is start from very basic level to advanced level. Focus has been given to delivering the practical and hands-on knowledge.

Trainer Introduction:

Your trainer brings over 21 years of experience in operation & maintenance, erection, testing, project management, consultancy, supervision, substation automation, SCADA, and commissioning. With a background spanning power plants, high voltage substations, and HVDC installations, he has worked with renowned organizations such as Siemens Saudi Arabia. He has been involved in over 20 high-voltage substation projects across Pakistan and Saudi Arabia.

His expertise encompasses a wide range of areas including protection systems, substation automation systems, design, testing, and commissioning of power generation systems, high voltage switchgear, protection relays, and control schemes. He has a proven track record of leading testing and commissioning teams for implementing electrical infrastructure projects for industrial clients, including steel and petrochemical industries.

Following topics are covered in this training:

• Introduction to busbar protection

• Breaker Failure protection philosophy

• Substation Single line diagram, shown for busbar protection logic

• High impedance Vs Low impedance busbar protection, advantages and disadvantages of each protection

• Breaker Failure stage 1 & 2 operation

• Direct Transfer Trip in case of Breaker Failure protection stage 2

• Busbar panel general characteristics

• Design aspects of the panel

• Explained the symbols used in the drawings

• How busbar zone is formed

• Line and busbar isolator

• Busbar rating

• What is isolator replica and why it is required

• Criteria for  CT ratio selection

• Option of CT ratio selection for low impedance busbar protection

• Tripping matrix from busbar protection & breaker failure protection

• Trip command from busbar protection based on the isolator replica

• Basics of schematics, how page is divided in rows and column, how to read cross reference, move between pages.

• How loop is defined in schematics & how loops are named

• AC Supply circuit

• AC supply change over scheme

• Busbar protection blocking function, why it is required

• Current transformer circuit of busbar protection

• Power Supply circuit of busbar protection

• Trip and Lockout schematics, CB Close Block, AR Block Schematics

• Isolator Replica, CB faulty, DTT, Binary input Configurations

• Direct Transfer Trip from Busbar

• DC supply supervision

• Z sheet, component drawings, side and front view

Thanks