
Explore the fundamentals of substations, including the working principle, equipment, and interlocking. Compare transformers and auto transformers, and review breakers, lightning arresters, earthing, protection, control, and charger systems.
Learn how a substation fits into generation, transmission, and distribution, and how it steps voltage up or down, enables switching, and supports redundancy with transformers and circuit breakers.
Explain how substations are classified by function: generating, transmission, distribution, and switching, and summarize hvac versus dc substations and insulation options such as air, sf6, green gases, and hybrids.
Explore air insulated substations, analyze circuit breakers with separate mechanisms per phase, and identify current and voltage transformers, surge arresters, corona rings, isolators, and grounding practices.
Explain gas insulated substations (GIS) and how SF6 provides insulation and arc quenching, enabling compact switchgear with compartmental gas design and key components like LCS, CT, VT, and speed switch.
Hybrid substations combine indoor switchgear and gas insulated switchgear, enabling extensions by adding GIS to ISE and reducing land footprint. Outdoor gantries and cable connections illustrate integration.
GIS offers a compact footprint and faster installation, reducing installation time by about one third and freeing space compared with AIS, ideal for congested areas.
Compare air insulated switchgear and gas insulated switchgear, highlighting SF6 environmental hazards, heavier-than-air behavior, cost and life-cycle differences, footprint, cable needs, site costs, and faster commissioning.
Explore the difference between grid stations and substations, including generating substations, mesh busbar networks with breakers, and stepping up from 11 kV to 132 kV and down to 400 V.
Substations empower voltage stepping up for long-distance transmission and stepping down for distribution, reducing current and I^2R losses while controlling voltage drop with transformers and tap changers.
Dear All,
Welcome to our course “The Substation Fundamentals Course”. A power substation is an essential part of an electrical generation, transmission, and distribution system. The assembly of apparatus used to change some characteristics (e.g. voltage, frequency, p.f., A.C. to D.C., etc.) of an electrical supply is called a substation.
Trainer Introduction:
Your trainer brings over 21 years of experience in operation & maintenance, erection, testing, project management, consultancy, supervision, substation automation, SCADA, and commissioning. With a background spanning power plants, high voltage substations, and HVDC installations, he has worked with renowned organizations such as Siemens Saudi Arabia. He has been involved in over 20 high-voltage substation projects across Pakistan and Saudi Arabia.
His expertise encompasses a wide range of areas including protection systems, substation automation systems, design, testing, and commissioning of power generation systems, high voltage switchgear, protection relays, and control schemes. He has a proven track record of leading testing and commissioning teams for implementing electrical infrastructure projects for industrial clients, including steel and petrochemical industries.
Power substations have switching, protection and control equipment, and transformers. In a large substation, circuit breakers are used to interrupt any short circuits or overload currents that may occur on the network. Smaller distribution stations may use recloser circuit breakers or fuses for the protection of distribution circuits.
Substations themselves do not usually have generators, although a power plant may have a substation nearby. Other devices such as capacitors and voltage regulators may also be located at a substation.
This course consists of 9 Hours of recording and total of 95 different topics.
Following topics are covered in this training.
What are substations
Types of substations
What are air insulated substation
What are gas insulated substations
What are hybrid substation
Comparision of GIS and AIS substations
GIS & AIS foot print comparison
What is difference between Substation and Grid Station
Why substations are required?
What is Ferranti Effect?
How was earlier power distribution look like?
Development of 1st AC Transmission Line and Substation
Tesla Lab
Components of substation
Development of 1st AC Transmission Line and Substation
Transformer basics
Induced Voltage & per turn relationship.
Transformer Turn Ratio and full load current calculations.
Percentage Impedance of Transformer
Transformer Vector Group
Polarity of transformer
Radiator in Transformer
Types of Cooling, Why Two ratings are given at name plate of transformer
Buchholz Relay, installation, operation, construction
Sudden Oil Pressure Relay
Oil and Winding Temperature Indicator
Oil Level Indicator
Pressure Relief Device
Bushing of Transformer and Bushing Test Tap
Rupture Disc
Tap Changers Types and requirements
On load and Off load tap changers
Transformer General Arrangement Drawing
Transformer Name Plate.
Silica Gel and Breather
Isolator
Circuit Breaker
Earth Switch
Voltage Transformer
Current Transformer
Cable Sealing End
SF6 to Air Bushing
Busbar in substation
Visual inspection of transformer
Auxiliary Transformer
NGR Neutral Ground Resistor
Application of NGR using ETAP
Fuses
Shunt Reactor
Shunt Reactor at Single Line Diagram
Current Limiting Reactor
Communication System Between Substations PLC and Fiber Optic
Capacitor Bank In substation
Surge Arrestor
Lighting Rod and Mast
Thermal Imaging Technique
Busbar Scheme, Single bus Single Breaker Scheme
Single Bus and Single Breaker Scheme with Bus Section CB
Double Bus Single Breaker Scheme
One and Half Breaker Scheme
Ring or Mesh Busbar Scheme
Double Bus Double Breaker Scheme
Main and Transfer Bus System
Double Bus System with bypass isolator
Concept of Interlocking at Substation
Philosophy of Protection System
Control and Protection System in Substation
ANSI Codes for presentation of devices
Faults in Power System
Characteristics of Protection System.
Protection Zone Over lapping and Blind Zones in Power System
Protection Relays and its type
Induction Disk Type Electromechanical Relay
Attracted Armature Type Relay
Static, Digital and Numerical Relays
Protection Relays types with respect to function
Tripping Relays, Lockout Relays, Aux Relays and tripping coils
85 Batteries in Substation, Single line diagram, charging techniques
MV Switchgear, compartments, MV compartment, CB compartment, Busbar Compartment, LV compartment
Substation Earthing system
Best Regards