Protection and Control of High Voltage Power Circuits

Name: Protection and Control of High Voltage Power Circuits
Rating: 4.2 (162 reviews)

The study of protective devices and practices used in utilities and Industry today.

Created byGraham Van Brunt P. Eng., B.Sc.

Last updated 6/2019

English

What you'll learn

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”.
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)

Course content

1 section • 11 lectures • 5h 23m total length

Introduction13:05
Here you will find a good review of what is in this section.
Overview of Stations36:20
The various types and configuration of utility and industrial power facilities are examined here.
Relaying in General46:27
In this lecture you will find, protection schemes, zones of protection, types of electrical faults, the ANSI (American National Standards Institute) standard device numbering system and other common relay terminology.
Instrument Transformers17:54
Current and voltage transformers are examined in this lecture.
Transformer Configurations Connections Cooling27:30
Here Power Transformers are looked at from the perspective of configurations connections & cooling.
Surge Protective Equipment27:05
Various surge protective devices are looked at here.
High Voltage Circuit Breakers18:20
The main types of circuit breakers are looked at here: Oil Breakers; Air Blast Breakers; Vacuum Breakers; SF6 Breakers
Breaker Control & Auto Reclosing23:38
Breaker controlled tripping & closing; the trip free function; anti-pump are examined in this lecture along with the auto-reclose feature.The SEL-751 and the BBC CUH-90 relays are compared.
Instantaneous & Timed Over Current Protection43:35
Instantaneous & Timed Over Current Protection is studied using GE & Westinghouse mechanical relays as examples comparing them to the SEL-351 Distribution and Transmission Relay.
Differential Protection25:28
this is one of the most effective and common forms of protection used for almost every element of the power system.
Impedance Relaying43:38
The Impedance or Distance relays are mainly used for line protection. Permissive Overreach Transfer Trip (POTT) and Directional Comparison Protection schemes are looked at using the Westinghouse KD relay in comparison to the GE D60 (Multilin™) Line Distance Protection System.

Requirements

A solid background in electrical circuitry.

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. Transfer & remote tripping along with the need to provide immunity from ground rise potential and open circuit situations.

Who this course is for:

Engineers, Technologists, Technicians, Supervisors & Students.