Internship on Industrial Feeder Protection using Siemens IED - 7SJ80

Description

In electrical power system network, the relays and circuit breakers play a major role in protecting the power system components as well as consumer equipments. The relays should identify the fault and issue the trip to CB to avoid damage to the equipment.  This identification of faults is generally depending on the type of relays such as electromechanical, static and Numerical relays. In utility and industrial electrical power transmission and distribution systems, a numerical relay is a computer-based system with software-based protection algorithms for the detection of electrical faults. These are functional replacements for electro-mechanical relays and may include many protection functions in one unit, as well as providing metering, communication, and self-test functions. In this course, the training on each protection function is available in a typical feeder protection relay (7SJ80) will be provided. After successful completion of this internship, the intern gains the knowledge on 

1) Numerical relay 7SJ80    

2) 50 and 51 Protection in 7SJ80  

3) 67 Protection in 7SJ80  

4) 27 Protection in 7SJ80  

5) 59 Protection in 7SJ80  

6) Digsi-4 Software

7) Configuration of 7SJ80 relay

8) Testing of 7SJ80 relay



What will you learn

• Evolution of Protection

• Drawbacks in Electro Mechanical and Static Relays

• Advantages Numerical Relays or IED

• List of Feeder Protections

• ANSI Codes for Feeder Protections

• Operating Principle of 50 and 51 Protection

• Setting Parameters of 50 and 51 Protection

• Functional Logic diagram of 50 and 51 Protection

• Application of 50 and 51 Protection

• Testing of 50 and 51 Protection in 7SJ80 IED

• Operating Principle of 50N and 51N Protection

• Setting Parameters of 50N and 51N Protection

• Functional Logic diagram of 50N and 51N Protection

• Testing of 50N and 51N Protection in 7SJ80 IED

• Operating Principle of 67 Protection

• Setting Parameters of 67 Protection

• Functional Logic diagram of 67 Protection

• Operating and Polarizing Quantity in 67 Protection

• Importance of Relay Characteristics Angle (RCA)

• Applications of 67 Protection

• Testing of 67 and 67N Protection in 7SJ80 Relay

• Operating Principle of 59 Protection

• Setting Parameters of 59 Protection

• Functional Logic Diagram of 59 Protection

• Testing of 59 Protection in 7SJ80 IED

• Operating Principle of 27 Protection

• Setting Parameters Logic 27 Protection

• Functional Logic diagram of 27 Protection

• Testing of 27 Protection in 7SJ80 IED

• Digsi-4 Software

• Configuration of 7SJ80 IED-50 and 51 Protection

• Configuration of 7SJ80 IED-50N and 51N Protection

• Configuration of 7SJ80 IED-67 and 67N Protection

• Configuration of 7SJ80 IED-59 Protection

• Configuration of 7SJ80 IED-27 Protection

Requirements

Reviews

Midhun M Pillai - Tue, 23-Aug-2022