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

PROT 409: Generation System Protection

PDHs: 23

Course Base Fees: $1,800*
* Plus Applicable Tax


Course Information

This is a three-day course.

Course Base Fees: $1,800 USD

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


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


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.

Student Background and Knowledge

Before you attend this class, we recommend that you have a degree in electrical engineering or equivalent experience. In addition, we recommend that you complete PROT 401: Protecting Power Systems for Engineers OR have 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.

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Course Preparation

Digital course materials: A link to download the digital course materials will be sent via email 2 weeks prior to the course, and a workbook will be provided on the first day.

Additional information is on the Course Policies and FAQ pages.