Power Substation , Transmission & Distribution ,

Gas-Insulated Switchgear Course: Design, Installation, Operation and Maintenance, Testing

This course covers the essentials of a Gas-Insulated Switchgear (GIS), main components and layouts/diagrams, and other GIS equipment in a substation. You will learn to recognize GIS parts and to properly read various GIS diagrams. 16 lessons in 3h 2min. total course length.

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Muhammad Kashif

Course Description

This course covers the essentials of a Gas-Insulated Switchgear, or shortly ‘GIS‘, that every electrical engineer who deals with power substations and electrical equipment in the field should know. You will learn all major equipment installed within GIS, such as circuit breaker or switch, disconnector, grounding switch, current and voltage transformers, busbars, busducts and interconnecting parts, SF6 gas-to-air bushing, cable box/cable sealing, power transformer interface chamber/bushing, and surge arrester.

Students will learn why gas-insulated switchgear is often used in industrial areas to fulfill high energy demands by space saving design with a minimum of cost, and why only SF6 insulated switchgear is able to fulfill these requirements.

It is important for an engineer to have a basic understanding of the basic GIS components and layout/diagrams of the GIS and GIS equipment being dealt with. This is essential you must learn before entering any substation where GIS is installed and operational.

Topics discussed in this course

The following topics will be discusses in this course:

Introduction to Gas Insulated Substation
Comparison of AIS Vs GIS
Installation
GIS Operation
GIS Maintenance
Total Cost of Ownership
Circuit Breaker
Pole Marking
Interrupter Unit
Single & multiple interrupter
Why it is required to add interrupter unit
Why interrupter units are added in series
Single mechanism for each pole and single mechanism for each pole
Pole Discrepancy
Arc Quenching
Circuit Breaker Chamber details
Circuit Breaker Operating Mechanism
What is SF6 electronegativity?
Why speed of circuit breaker is important for arc quenching?
CB fixed and moving contacts
Why too fast CB closing create problems?
Pole synchronization & allowable tolerance
Hydro Mechanical system, latest technology
CB Aux contacts
Puffer interrupting Units
Self-blast interrupting Units
Why arc quenching depend on current in self-blast circuit breaker.
Thermal Chamber in CB interrupter unit
GAS Tight & Gas Permeable Insulators
Gas Compartment
Marking of Gas Compartment
Review Gas Diagram
Gas Monitoring Devices
SF6 Alarm & Lock Out Stage
Inspection Window
Steel Structure
GIS Earthing
Current Transformer
Basic definition of current transformer
Multi Ration & Multi Core CT’s
CT Polarity

Primary and secondary windings
Why Polarity is very important
CT Protection and metering cores
Rating of CT
Voltage Transformer
Definition of VT
Multi core VT
Rating of VT
Class of VT, Protection and Metering
Location of VT in SLD
Surge Arrestor (SA)
Surge Counter
Construction of Surge Arrestor
Maintenance & Monitoring of SA
Grading Electrode of SA
Isolator & Earth Switch
Mechanical and Electrical Interlocking
Busbar isolator and busbar earth switch interlocks
Use of earth switches for performing primary injection test
Difference between normal earth switch and high speed earth switch
SF Air Bushing
High Speed Earth Switch
Where high speed earth switch is used?
Local Control Cubicle
Local / Remote Control
Alarms on LCC
Mimic
Trip Circuit Supervision indication
Marshaling Kiosk (MK)
Busbar
Bonding
Cable Compartment
Cable Sealing End
SF6 Gas
Properties of SF6 Gas
Insulation level of SF6 compare to air
Impact pressure on SF6 insulation ability
Purity and dew point test
Leakage test / Gas Tight test
Leakage Detector

Who Is This Course For

Practicing power system engineers
Substation engineers
Maintenance staff
Electrical engineering students planning on pursuing a career in power engineering
Power System Protection Engineers

Requirements

Knowledge of basic substation terms
A basic understanding of power systems
Desire to learn

Downloadable course materials

After purchasing the course, students can download the following PDF documents:

The basics of Gas Insulated Substation (GIS) for students
400/220 kV gas insulated (GIS) transmission substation controlled by SCADA
Technical Specification For 220kV SF6 Gas Insulated Metal Enclosed Switchgear (GIS)
The basics of high voltage switching equipment in power substations and switchyards

Course Content

1. Introduction to the Course & Download Materials

2. Components of Gas-Insulated Switchgear (GIS)

3. Visit of GIS in Substation and Explanation of SLD – Part #1

4. Visit of GIS in Substation and Explanation of SLD – Part #2

5. GIS Circuit Breaker

6. Isolator and Earth Switch

7. High-Speed Earth Switch

8. Current Transformer (CT)

9. Voltage Transformer (VT)

10. Surge Arrestor (SA)

11. SF6 to Air Bushing

12. SF6 Gas in Gas-Insulated Switchgear

13. GIS Adopters

14. Cable Sealing End

15. GIS Gas Compartment and Barrier Insulators

16. Local Control Cubicle (LLC)

About Instructor

Muhammad Kashif

Muhammad Kashif Shamshad is an Electrical Engineer and has more than 17 years of experience in operation & maintenance, erection, testing project management, consultancy, supervision, and commissioning of Power Plant, GIS, and AIS high voltage substations ranging up to 500 kV HVAC & ±660kV HVDC more than 10 years experience is with Siemens Saudi Arabia. He completed over 20 high voltage substation projects, Operation & Maintenace of Substation & Power plants in Pakistan and Saudi Arabia for different electric utilities including Saudi Electricity Company (SEC), Saudi Aramco, SABIC, Marafiq, National Transmission & Despatch Company (NTDC), WAPDA, and K-Electric. Also, he led testing and commissioning teams to implement electrical infrastructure projects for many types of industrial clients (Steel, Petrochemical, etc.) in both countries, Pakistan and Saudi Arabia.

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Buy this Course

$28.45

Course Includes

16 Lessons
Course Certificate
Lifetime Access