Course Overview

  • 5.5 Hours

  • All Levels

  • All Devices

  • 12 Months Access

  • Certificate

Watch Intro Video

What will you learn in this course?


Here we deal with the protection & control principles of high voltage stations. HV Bus Differential Protection is studied along with restrictions due to CT saturation & mis-match and its solution, “Restraint Differential Protection”.

Starting with System Faults and how they affect  Switchyard Configuration & Elements, simple “Differential Protection” is examined along with the mal-operation due to CT saturation and mis-match.

High Voltage Circuit Breakers are examined as to the various Types (Oil, Vacuum, Air Blast, SF6), their Controls (Closing/Tripping/anti-pumping) Reclosure Syncrocheck relay CUH 90 – VG, as well as Breakers Failure Protection, is part of this module along with a quick look at Dynamic Monitoring Equipment. We also look at transfer & remote tripping and the need to provide immunity from ground rise potential and open circuit situations.


What you will learn:

  • System Faults
  • Switchyard Configuration & Elements
  • The DESN Station (Duel Element Spot Network)
  • HV Bus Differential Protection
  • CT Saturation & Mal-operation of Bus Protection
  • CT Saturation & Restraint Differential Protection
  • Westinghouse KD - 4 Relay
  • Surge Protective Devices
  • Fuses; DC Protection
  • Logic Differential Protection
  • The Modern IED Relays (Intelligent Electronic Device)
  • Overview HV Circuit Breaker Types (Oil, Vacuum, Air Blast, SF6)
  • HV Circuit Breaker Controls (Closing & Tripping)
  • HV Circuit Breakers; 
  • Reclosing (Syncrocheck CUH 90 – VG Relay)
  • Dynamic Monitoring Equipment (DME)
  • Impedance Relaying (POTT)


Register to access free preview lessons.

    1. Introduction

    2. Overview of Stations

    3. Relaying in General

    4. Instrument Transformers

    5. Transformer Configurations Connections Cooling

    6. Surge Protective Equipment

    7. High Voltage Circuit Breakers

    8. Breaker Control & Auto Reclosing

    9. Instantaneous & Timed Over Current Protection

    10. Differential Protection

    11. Impedance Relaying

About this course

  • €24,99
  • 11 lessons
  • 0 hours of video content