html{display:none} PROT 413: Generation Station Protection | Schweitzer Engineering Laboratories

PROT 413: Generation Station Protection


Electrical engineers who are responsible for the protection systems of generators, large transformers, and the auxiliary power systems that support power stations, including nuclear power stations, should attend this course. 

PROT 413 is a fundamentals course that provides both a theoretical and applied (or practical) introduction to protection of generators, large transformers, and auxiliary power systems and equipment at power stations. In this 4.5-day course, students will complete exercises to help them learn symmetrical components and concepts of protection for generators, motors, transformers, and buses.


Day 1
  • Synchronous Generator Review
  • Generating Station Arrangements and Generator Grounding
  • Class Exercise: Generator Grounding
  • Power System Balanced Faults
  • Symmetrical Components
  • Class Exercise: Symmetrical Components
Day 2
  • Power System Unbalanced Faults
  • Class Exercise: Generator Fault Calculations
  • Protection Fundamentals
  • Instrument Transformers
Day 3
  • Generator Fault Protection
  • Class Exercise: Generator Fault Protection
  • Generator Abnormal Operation Protection, Part I: Thermal, Current Unbalance, and Motoring Protection
  • Generator Abnormal Operation Protection, Part II: Loss-of-Field, Overexcitation, and Overvoltage Protection
  • Class Exercise: Generator Loss-of-Field Protection
Day 4
  • Generator Abnormal Operation Protection, Part III: Abnormal Frequency and Out-of-Step Protection
  • Generator Abnormal Operation Protection: Part IV: Breaker Failure, Inadvertent Energization, and Backup Protection
  • Class Exercise: Generator Backup Protection
  • Bus Protection
  • Transformer Protection
Day 5
  • Motor Protection
  • Other Auxiliary Power System Considerations

Note: This course teaches fundamental knowledge but does not provide hands-on experience with SEL relays.

Course Objectives

During this course, students will:

  • Review electromechanical characteristics of synchronous generators
  • Explore power station arrangements and methods for generator grounding
  • Review symmetrical components concepts applied to unbalanced fault analysis
  • Review protection fundamentals, such as primary and backup protection concepts, description of protection system elements, and digital relay architecture
  • Review current and voltage transformers and their impact on protection scheme performance
  • Discuss common power system protection issues at power stations
  • Review generator stator phase and ground fault protection schemes
  • Review generator rotor ground fault protection schemes
  • Review generator abnormal operation protection schemes, including, but not limited to, thermal, current unbalance, loss of excitation, out of step, and overexcitation
  • Discuss bus protection concepts and analyze bus protection schemes
  • Discuss transformer protection challenges, concepts, and schemes
  • Review motor thermal and short-circuit protection principles
  • Review protection schemes applied to power station auxiliary systems
Course Information
Course Base Fees: $USD2,875*

CEUs: 3.2
Available Courses
Barrie, Ontario, Canada
April 20–24, 2020

Schweitzer Engineering Laboratories
351 King St Unit 5
Barrie, Ontario L4N 6B5

Additional Information:
8:00am-5:00pm each day 

Recommended Hotel Information: 

Holiday Inn Express & Suites Barrie 
506 Bryne Dr 
Barrie, ON L4N 9P6 

Hampton Inn & Suites by Hilton Barrie
74 Bryne Dr 
Barrie, ON L4N 9Y4 

*Please note that these are only recommendations.

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Course Requirements


A degree in electrical engineering or equivalent experience is required. Also, students should have the following:

  • Familiarity with electrical power systems at generating stations
  • A basic knowledge of symmetrical components and power system protection
  • A working knowledge of basic ac three-phase electrical power systems, trigonometry, basic calculus, complex numbers, and phasor concepts

Course Preparation

Please check the General Course Information page for what you should bring to class.