Description
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)
Curriculum
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1
Introduction
- Introduction FREE PREVIEW
- Overview of Stations
- Relaying in General
- Instrument Transformers
- Transformer Configurations Connections Cooling
- Surge Protective Equipment
- High Voltage Circuit Breakers
- Breaker Control & Auto Reclosing
- Instantaneous & Timed Over Current Protection
- Differential Protection
- Impedance Relaying