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Utility Relay Protection Fundamentals (URPF)

What is my take-home:
This corner-stone Utility Relay Protection Fundamentals (URPF) course is a must have for all engineers who enters into the Protection & Control field and electrical technicians.

It is the most popular course and the most comprehensive elevating understanding of the principles of protection relaying and applications.

Who should attend?

Engineers entering the Protection & Control field.

Electrical technician of all walks of protection

Suggested pre-requisite: Electrical professional credentials.

Suggested duration: 4 days

Suggested agenda


Power System Components
Why Protect?
Relaying basics
Circuit Breakers
Primary and Backup relaying
Microprocessor Relays
3 phase AC properties
Symmetrical Components
Current & Potential Transformer


Generator Protection
Generator Protection
Generator Protection elements

  • Stator Differential
  • Neutral Displacement
  • 3rd harmonic
  • Loss of excitation
  • Accidental Energization
  • Low Forward Power
  • Reverse Power

Paralleling generators

  • AVR and Governor Control

Transmission Lines Protection
Introduction to Transmission Lines
Distance protection theory
Stepped Distance
Pilot Aided schemes:
DUTT, PUTT, POTT, HYBRID POTT, Directional blocking
Power Swings blocking
Line Current Differential protection


Transformer Protection
Transformer theory
Transformer protection elements

  • Current Transformer Percent
  • Differential
  • 2nd harmonic inhibit
  • 5th harmonic inhibit
  • Volts/Hz
  • Sudden Pressure change detection

Busbar Protection
Bus protection elements
  Bus protection requirements
  Bus protection schemes

  •  High Impedance
  •  Linear Couplers
  •  Interlocking
  •  Unrestrained Differential
  •  Percent Differential
  •  Low Impedance microprocessor-based



Feeder Protection
  Protection elements
  Relay coordination
  Phase TOC (51)
  Phase IOC (50)
  Ground Relaying
  Instructor led Lab exercises
  Fault simulation
  Event Log

Friday, December 2, 2022
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