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Substation Relay Protection Training

substation relay protection training

You Can Access The Live Online Training Through Our Web-Based Platform From Your Own Computer. You Can See And Hear The Instructor And See His Screen Live.

You Can Interact And Ask Questions. The Cost Of The Training Also Includes 7 Days Of Email Mentoring With The Instructor.

Substation Relay Protection Training - This 12-Hour, instructor-led, live online course is designed for engineers and technicians from utilities or industries who participate in the design, installation, or maintenance of protective relays and substation controls.  Participants will increase their knowledge of protection concepts and how those concepts apply in a variety of situations.  The common protective relay types applied to lines (transmission and distribution), transformers, busses, generators, and motors are described, noting important considerations for typical applications.



The course objectives are:

  • Provide an understanding of system protection concepts
  • Understand operation of batteries, chargers, trip/close, and control circuits
  • Develop skills to apply protective relays to lines (transmission and distribution), transformers, busses, generators, and motors.
  • Gain knowledge of overcurrent, directional, impedance (distance), differential, underfrequency, and generation relays
  • Gain awareness of tradeoffs and constraints involved with system protection
  • Know benefits of modernizing system protection equipment with data networking capability

WHO should attend

This Substation Relay Protection Training course is recommended for engineers and technicians from utilities or industries who participate in the design, installation, or maintenance of protective relays and substation controls.  Job classifications include:

  • System Protection Engineers
  • Substation Design Engineers
  • Relay Technicians
  • Substation Construction Technicians
  • Control System Engineers
  • Consulting Engineers
  • Testing & Commissioning Engineers
  • Maintenance Engineers & Technologists
  • Substation Operation/Maintenance Engineers & Technologists
  • Transmission & Distribution Engineers



Students receive


  • This Course Includes Our Latest Protection And Control Electrical Handbook!! (Value $20)
  • $100 Coupon Toward Any Future Electricity Forum Event (Restrictions Apply)
  • 1.2 Continuing Education Unit (CEU) Credits (12 Professional Development Hours)
  • FREE Magazine Subscription (Value $50.00)
  • Course Materials In PDF Format





What is a protection system?

  • What is being protected and why? NERC definition
  • Protective relays
  • Instrument transformers (VT’s and CT’s)
  • DC Protection and control circuits

Substation DC Systems

  • Purpose for DC systems in substations
  • Batteries, different types and comparison
  • Battery capacity, battery installation
  • Battery chargers
  • Trip circuits
  • Close circuits
  • DC circuit monitoring

Voltage Transformers

  • Electro-magnetic Voltage Transformers (EMVT)
  • Capacitive Coupled Voltage Transformers (CCVT)
  • VT accuracy

Current Transformers

  • Types of current transformers
  • CT ratios & polarity
  • CT accuracy, burden, and saturation
  • Shorting CT secondary circuits
  • Open-circuit CT voltage and safety considerations
  • CT magnetization
  • CT Connection in ring bus / breaker & a half schemes

Protective Relay Types

  • Dependability, security, selectivity, speed
  • IEEE device numbers
  • Electromechanical, Electronic, & Microprocessor
  • History, Comparison of types

Transformer Protection

  • Fuses - Good for small transformers, difficulties coordinating with downstream devices
  • Overcurrent – simplicity but limited mainly as backup protection
  • Differential – single & multiple slope, harmonic inrush restraint
  • Delta-wye transformer connection considerations
  • Sudden Pressure & Bucholz relays
  • Voltage controller (90)


Bus Protection

  • Bus differential
  • Bus configurations and CT connections
  • Breaker failure protection

Distribution Line Protection

  • Fusing
  • Reclosers & sectionalizers
  • Overcurrent relays
  • Directional, negative sequence settings

Transmission Line Protection

  • Directional Overcurrent
  • Distance (Impedance) and mho characteristic
  • Load encroachment settings
  • Pilot Relaying (communications assisted)
  • DCB - Directional Comparison Blocking
  • POTT - Permissive Overreaching Transfer Trip
  • Line Current Differential

Reclosing (79)

  • Pros and cons of reclosing on line faults
  • Distribution circuits, reclosing considerations
  • Transmission circuits, reclosing considerations

Underfrequency Load Shedding

Generation Protection

  • Stator grounding, high resistance or low resistance
  • Stator protection, generally differential
  • Accidental energization - generator acts as a motor and produces high current in the rotor
  • Start-up protection
  • Loss of field
  • Out-of-step protection and pole slip

Relay Data Communication

  • Digital communication concepts
  • Protocols, DNP, IEC 61850
  • Relay event reports & COMTRADE
  • Data concentrator
  • SCADA communication


Both days:
Start: 10:00 a.m. ET
Finish: 4:30 p.m. ET



Live Online Course Registration Fees & CEU Credits

The registration fee to attend this live online training course is $599 + GST/HST.

Click Here to download a $100 discount coupon that you can apply toward the regular registration fee and pay only $499 + GST/HST

Register 3 delegates at full price $599, and get a 4th registration FREE!

Earn Continuing Education Unit (CEU) Credits

Successful completion of this course qualifies delegates to receive a certificate of course completion with indicated CEUs.


CEUs are granted by the Engineering Institute of Canada. One CEU is equivalent to 10 professional development hours of instruction.

This course earns 1.2 CEUs.

Live Online Course Schedule

Live on-line or in-person. Customized.

Live online group training

We can present this Substation Relay Protection Training to your electrical engineering and maintenance staff, tailored to your specific equipment and requirements. We are ready to help design this program for you. Click on the link below to request a FREE quotation.


Steve Larson
Electricity Forum Substation Specialist