Power System Protection and Control (1.2 CEUs)

Daily Schedule:

8:00am - Registration and coffee (1st day only)
8:30am - Session begins
4:30pm - Adjournment
Breakfast, two refreshment breaks and lunch are provided daily. (except webinars)


This course covers basic protection concepts and applications. The main objective of this course is to give students an understanding of the technical aspects of power system protection and management. The concepts and operation theory of electromechanical and modern relays (electronic, digital, and IEDs) will be covered as well as proper protection to individual components such as distance, feeder, directional, transformer, busbar, motor and generator protections. The course also includes an overview of electromechanical and digital relays.


Power-system protection is a branch of electrical power engineering that deals with the protection of electrical power systems from faults through the isolation of faulted parts from the rest of the electrical network. The objective of a protection scheme is to keep the power system stable by isolating only the components that are under fault, whilst leaving as much of the network as possible still in operation.

Target Audience

Employees who require a general knowledge of, or refresh their knowledge in Protection Systems to fully understand how they interface with their equipment, but who do not work directly on the relays, eg: supervisors, electricians, technicians, technologists, P&C operators and area dispatchers.
Upon successful completion of this course, the participants will have reliably demonstrated the ability to:
  1. Understand general protection schemes used at a power generation station that differs from protection schemes used at a transmission substation or at a distribution substation.
  2. Explain the principles of protective relaying including the theory and operation of modern relays (electronic, digital, and Intelligent Electronic Devices (IEDs).
  3. Understand different relay systems and how they respond to a fault.
  4. Understand the applications of protection devices in the design of protection systems for transmission lines, feeders, transformers, busbars, motors and generators.
  5. Understand the operating principles of protection system components, e.g. fuses, relays, circuit breakers, instrument transformers and their applications for the design of protection systems for transmission lines, motors, generators and transformers.
  6. Indicate the most common elements used to protect the different elements of the power network system.
  7. Apply Current Transformers (CT) and Potential Transformers (PT) to relay systems.

Mike Dang

Michael D. N. Dang obtained his B.Sc. (Hon.) in 1968, M.Sc. in 1969 and Ph.D. in 1972 all in Electrical Engineering from the University of Manchester Institute of Science & Technology, England. He worked for the Central Electricity Generating Board in London before immigrating to Montreal in 1981 and joining Shawnigan Consultants Inc. He came to Toronto and joined Ontario Hydro/Hydro One Networks Inc. in 1988. He retired from Hydro One in June 2013 and joined Mohawk College of Applied Arts and Technology where he managed the R&D programs and projects including lecturing in Power Quality at McMaster University and Power System Protection and Power System Analysis at Mohawk College His major study areas include power system protection, harmonics, power system analyses, system operations and connections of combined-cycle and wind-turbine generation to the Grid. He has published 17 technical papers to date.
Dr. Dang is a registered professional engineer in the Province of Ontario, a Fellow of Engineers Canada in 2010, and a member of the Experience Requirement Committee of Professional Engineers Ontario.
Day 1 (a.m.) Overview of Electromechanical and Digital Relays: Main protection requirements; Chronology of protection; Technological history; Micro-processor relay benefits; Digital relays - Area of use; Substation communications – LAN & WAN; Available control by digital relays via communications and protocols; Maintenance and benefits.
Day 1 (a.m.) Fundamentals of Distance Protection: Typical protection schemes for short, medium and long lines; Calculation methods for line impedance; Distance relay characteristics such as impedance, Mho admittance, quadrilateral, elliptical, peanut and lens; Need for self-, cross- and memory polarization; Philosophy of three-step distance protection; Pilot and non-pilot distance protection schemes; Directional comparison (blocking and unblocking; Direct and permissive under-reaching and over-reaching transfer trips.
Day 1 (p.m.) Distribution Feeder Protection: Basic protection requirements and relay characteristics; Classification of faults: active (solid and incipient), passive (over-loading, overvoltage, under frequency, power swings), transient and permanent, symmetrical, asymmetrical and un-symmetrical; Fuses in feeder protection; Unit and non-unit protection schemes such as time- and current-graded overcurrent and restricted earth-fault protection.
Day 1 (p.m.) Transformer Protection: Fundamentals of transformer protection; transformer winding arrangements and connections; transformer faults and failures; transformer differential, restrained, and harmonic-restrained differential protection; Overcurrent and ground-fault protection; Fuses and gas-actuated relays in transformer protection.
Day 2 (a.m.) Directional Protection and Directional Zone Selectivity: The roles of directional protection; Protection of parallel lines and transformers including current reversal; Directional overcurrent protection in ring- or mesh networks; Directional ground-fault and comparison ground-fault protections.
Day 2 (a.m.) Busbar Protection: Busbar arrangement schemes; Causes and types of busbar faults; Substation bus-schemes (single-bus, main- and transfer-buses, double bus- double breaker, double bus-single breaker, ring bus and breaker-and-half); Bus design and protection techniques; Overcurrent-based interlocking schemes; Current, overcurrent and voltage balance differential schemes; Low- and high- bus differential schemes; Distributed busbar protection.
Day 2 (p.m.) Motor Protection: Classification of motors; Motor failures, rates and costs; Thermal overload protection; Motor starting (frequent, low voltage and capacitor); Overvoltage, undervoltage, unbalance, unbalance bias protection; Instantaneous, time-overcurrent and ground fault protection; Motor stall and overfluxing protection; Differential protection (core balanced, summation and biased differential).
Day 2 (p.m.) AC Synchronous Generator Protection: Generator problems and failures; Synchronous generator protection; Differential protection; Under-impedance protection; Stator and stator inter-turn protection; Cross-differential protection; Residual voltage protection; Rotor ground-fault protection; Loss of excitation protection, under-, overvoltage and overload protection; Reverse power and negative-phase sequence protection.

GIC reserves the right to cancel or change the date or location of its events. GIC's responsibility will, under no circumstances, exceed the amount of the fee collected. GIC is not responsible for the purchase of non-refundable travel arrangements or accommodations or the cancellation/change fees associated with cancelling them. Please call to confirm that the course is running before confirming travel arrangements and accommodations. Please click here for complete policies.

Toronto Airport West
5444 Dixie Rd
Mississauga, ON
L4W 2L2
Note: Please do not book travel and accommodation until you receive course confirmation.

We could offer any of our courses at a location of your choice and customized contents according to your needs, please contact us at : inhouse@gic-edu.com or click here  to submit an online request.

Course Materials

Each participant will receive a complete set of course notes and handouts that will serve as informative references.

Need a Government Grant?

Jumpstart your training with the help of Global Innovative Campus (GIC-Canada) & the Canada Job Grant.

Seminars and Workshops offered within your organization anywhere in the world.

Offline Registration

To Register by fax, download and fill our registration form, then fax it to (888) 849-4871. Mail your cheque to our address.

If you have a question regarding this course, please click here to contact us.
CEUs Certificate

A certificate of completed Continuing Education Units (CEUs) will be granted at the end of this course. A fee is required for all complimentary webinars.

On-Site Training

This course can be customized and delivered on-site at your facility.

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