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ICTD International Centre for Training and Development

Protection of Electrical Power Systems

Available dates

Oct 20—24, 2019
5 days
Muscat, Oman
USD 3300
USD 660 per day


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About the course

Power system protection is very important for generation, transmission, utilities and industrial electrical distribution networks, because it limits the damage in electrical networks caused by short circuit and other type of faults. The course contains the different types of relays, the function of each relay, the basic requirements of the protective relays and how to protect the electrical network components such as transformers, generators, motors, feeders, distribution and bus-bars.

Course Objectives

Upon completion of the course, participants will be able to:

  • To know the basic requirements of protective relays and the different types of faults in the electrical network
  • To know the different types of relays and principles of operation of each type
  • To learn how to protect the generators, transformers , feeders , bus-bars ,motors and distribution circuits
  • To know what is the primary and secondary protection

Course Outline


  • Protective relay
  • The main idea of relays operation
  • Different types of faults
  • The basic requirements of protective relays
  • Classification of relays according to their function of operation
  • Classification of relays according to their time of operation
  • Classification of relays according to their construction
  • Current transformers
  • Potential transformers


  • Circuit Breakers
  • Different types of circuit breakers
  • Breaking and making capacity
  • Capacitive and inductive switching
  • Transient recovery voltage
  • Maintenance and testing of circuit breakers
  • Types of relays
  • Electromagnetic relays
  • Static or electronic relays
  • Digital relays
  • Differential relays
  • Over current relays


  • Distance relays-Impedance relays, admittance relays and reactance relays
  • Earth leakage relays
  • Buchholz relay
  • Directional relays
  • Bus –bar Protection
  • Bus-bar Protection Techniques
  • Interlocking Schemes
  • Over-current Differential
  • Percent Differential
  • Feeder and distribution network protection
  • Transmission line & Feeders Protection
  • Distance & Impedance protection


  • Transformer Protection
  • Earth fault on a transformer winding protection
  • Core faults due to insulation breakdown which sufficient eddy current to flow causing over heating protection
  • Inter-turn faults occur due to winding flashover caused by line surges. protection
  • Phase to phase faults protection
  • Tank faults due to loss of oil which produces abnormal temperature rises protection


  • Generator Protection
  • Faults in the windings protection
  • Loss of excitation protection
  • Motoring of generators protection
  • Overload protection
  • Overheating protection
  • Over speed protection
  • Unbalanced operation protection.
  • Out of synchronization protection
  • External faults protection

Case Study

  • Examples and case studies will be Appropriate during the training sections. Delegates should come to the training with an example of a project they may wish to undertake and deliver in future to be discussed. Delegates will be asked to work in groups to practice planning skills and learn various concepts and techniques.

Course Methodology

A variety of methodologies will be used during the course that includes:

  • (30%) Based on Case Studies
  • (30%) Techniques
  • (30%) Role Play
  • (10%) Concepts
  • Pre-test and Post-test
  • Variety of Learning Methods
  • Lectures
  • Case Studies and Self Questionaires
  • Group Work
  • Discussion
  • Presentation

Who should attend

This course is for Electrical Engineers & Electricians.

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