Looking at the fundamentals and develping an in-depth look at protection & control systems.
Upon completion participants will be familiar with:
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 - Reclose (Syncrocheck CUH 90 – VG Relay)
Dynamic Monitoring Equipment (DME)
Impedance Relaying (POTT)
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. Transfer & remote tripping along with the need to provide immunity from ground rise potential and open circuit situations.
