ECE 6605 PD


Power system protection schemes are designed to ensure safe and reliable operation of the power system. Their main tasks include, reducing the fault duration, reducing damage to system equipments and life and minimize power interruptions to customers. The scope of this course includes understanding the basic philosophy and elements of protection system, studying the principles for protecting different elements and studying different technologies used in designing protective relays.


  1. To understand the function and operation of the protective system elements.
  2. To equip engineers with skills and knowledge to select, apply and operate protection systems.
  3. To introduce the state-of-the-art protective techniques to power engineers.

Course prerequisites

Basic knowledge in power systems engineering and electric circuits is required.

Main topics and delivery plan

Module Topic
1 Protection system requirements
2 Elements of protection systems
3 Overcurrent protection
4 Co-ordination principles of overcurrent protection devices
5 Directional overcurrent relays
6 Distance protection
7 Pilot protection of transmission lines
8 Transformer protection
9 Generator protection
10 Motor protection
11 Busbar and compensation devices protection


Text Book: "Power System Relaying" by Stanley H. Horowitz and Arun G. Phadke, Research Studies Press Ltd., England. (some material covered in this course is not in the textbook) ISBN 0471 95887 5 (for North America). Distributors in North America, Taylor and Francis Inc. 47 Runway Road, Suite G, Levittown, PA 19057-4700 USA.

  1. Alstom, Network Protection and Automation, 2002.
  2. J.L. Blackburn, Protective Relaying, Marcel Dekker, Inc., 1987.
  3. Asea Brown Boveri, Walter Elmore (Editor), Protective Relaying - Theory and Applications", Marcel and Dekker, 1994.
  4. Advancements in Microprocessor Based Protection and Communication", IEEE, Tutorial Course, IEEE Power Engineering Society, NJ, 1997.
  5. "Microprocessor Relays and Protection Systems", IEEE Tutorial Course (88EH0269-1-PWR), IEEE Power Engineering Society, NJ, 1988.
  6. "Computer Relaying", IEEE Tutorial Course (79EH0148-7-PWR), IEEE Power Engineering Society, NJ, 1979.
  7. A.G. Phadke and J.S. Thorp, "Computer Relaying for Power Systems", John Wiley and Sons, 1994

In addition to many Selected published papers in IEEE Trans on Power Delivery.


For more information, please contact directly the course coordinator Professor Sahar Azad.