html{display:none} PROT 409: Generation System Protection | Schweitzer Engineering Laboratories

PROT 409: Generation System Protection


Engineers who need a comprehensive understanding of the design concepts and methods used in protecting electrical power generation systems should attend this course.

PROT 409 provides an in-depth study of the methods used in designing complete protection systems for generation systems.


Day 1
  • Power System Faults
  • Synchronous Generator Review
  • Generating Station Arrangements and Generator Grounding
  • Class Exercise: Generator Grounding
Day 2
  • Class Exercise: Generator Fault Calculations
  • Generator Fault Protection
  • Class Exercise: Generator Fault Protection
Day 3
  • 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
  • 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

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

Course Objectives

At the conclusion of this course, students can:

  • Identify the protection requirements of synchronous generators
  • Apply generation system protection principles
  • Identify and select appropriate protection schemes for various generator applications
  • Determine settings for system backup using phase distance and overcurrent elements
  • Apply high- and low-impedance neutral grounding techniques
  • Calculate settings for critical generator protection elements, including:
    • Differential and ground fault
    • Out-of-step protection elements
    • Loss-of-field, overexcitation, and overvoltage
Course Information
Course Base Fees: $USD1,800*

CEUs: 2.1
Available Courses
Orlando, Florida, USA
March 17–19, 2020

Courtyard Lake Buena Vista Marriott Village
8623 Vineland Ave
Orlando, Florida 32821

Additional Information:

8:00 a.m. - 5:00 p.m. each day

Recommended Accommodations:

Courtyard Orlando Lake Buena Vista in the Marriott Village
8623 Vineland Ave
Orlando, FL 32821
(407) 938-9001

SEL University has reserved a block of rooms at the rate of $99.00 +tax/night. To reserve from the room block, call (407) 938-9001 and identify yourself as part of the Schweitzer Engineering Group staying at the Courtyard Orlando Lake Buena Vista, or reference group code "SEL".

You can also use this booking link.

The cut-off date for this rate is February 14, 2020.

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Course Requirements


A degree in electrical engineering or equivalent experience is required. In addition, PROT 409 requires completion of PROT 401: Protecting Power Systems for Engineers or the following:

  • Familiarity with electrical power generation systems
  • A basic knowledge of protective relay design, symmetrical components, and power system protection
  • A working knowledge of trigonometry, basic calculus, complex numbers, and phasor concepts

Course Preparation

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