Hi and welcome everyone to our course " Ultimate Electrical Transformers for Power Engineering"
In this course, you are going to learn everything about electrical power transformers starting from the operation, theory, and design of three phase transformers moving to realizing the different types of transformers and their applications in the electric network, ending with a complete study on transformer protection, testing, and commissioning.
Thus, this course is designed to take you from zero to hero concerning electric power transformer engineering field.
The course is structured as follows:
Firstly, a complete overview on the transformer theory and operation is illustrated through the following topics:
Transformer theory of operation
Ideal vs. Real transformers
Transformer equivalent circuit (Exact and approximate)
Phasor diagram of ideal and real transformers
Then, the next topic will be about the assessment of transformer performance through the following topics:
Transformer losses
Hysteresis losses vs. Eddy current losses
Transformer efficiency
Transformer regulation
How to perform open and short circuit tests to obtain transformer parameters
Then, a complete study on three phase transformers is introduced since 99% of power transformers are actually three phase transformers. Thus, three phase transformers are explained in depth through the following topics:
Construction, types, and connections of three phase transformers
How to get the per phase model of three phase transformers ?
Per unit analysis in three phase transformers
How to get the per unit transformer parameters
Transformer vector group
How to obtain winding connections of any transformer vector group with examples ?
Then, you are going to learn about the manufacturing and construction of power transformers explaining all the transformer parts. The following topics will be covered:
Transformer core manufacturing
Core type vs. Shell type transformers
Transformer winding manufacturing
Helical, Crossover, Disc, and Sandwich windings
Transformer main and conservator tank
Importance of transformer oil
Breather unit, Buchholz relay, Surge arrester, and Rod gap in power transformers
Transformer terminals and bushings
Transformer cooling methods
Then, the next topic will be about the different factors that affect the transformer operation. These factors are discussed through the following points:
Temperature rise and thermal rating
Relation between temperature rise and transformer loading
Effect of harmonics on transformers
Harmonics mitigation and K-factor transformers
Inrush current in transformer
Over fluxing and its effect on transformers
Reasons for humming noise coming from transformer
Earthing of transformers
The next topic is about a complete study on different types of transformers and their applications in power systems. The following types of transformers are discussed in details:
Power transformers
Distribution transformers
Current Transformers (CT)
Voltage Transformers (VT or PT)
Auto Transformers
Earthing (grounding )transformer
Phase shifting transformer (PST)
Booster transformer
Three winding transformer (tertiary winding)
High voltage testing transformer (HVT)
Then, we are going to a complete study on transformer protection where we are going to know identify the different transformer faults and provide a suitable protection device to this type of fault. The following outlines are discussed in depth:
Types of transformer faults
Protection functions in transformer
Core-balance leakage protection
Combined Leakage and phase fault Protection
Differential protection of transformers
CT connections in transformer differential protection
How to calculate CT ratios for differential protection
Harmonic restraint relay
Over fluxing protection (Volt/Hertz relay)
Restricted earth fault protection
Oil and winding temperature trip relays
Pressure relief device (PRD)
Then, The next topic is about transformer testing, commissioning, and diagnostics where we are going to perform routine, type, and special test on power transformers to ensure the healthiness of the transformer before its energization on the site. The following tests are performed and explained:
Insulation resistance (IR test)
Tan Delta test (Dielectric loss test)
Partial discharge (PD test)
Hi-Pot test (Applied voltage test)
Induced voltage test
Impulse voltage test
Oil breakdown voltage (BDV) test
Dissolved gas analysis (DGA) Test
Transformer turns ratio (TTR) test
Winding resistance test
Magnetizing current test
Percentage impedance test
Vector group test
Finally, Complete MATLAB Simulations on electrical transformers are done such as:
MATLAB Simulation of 1-ph and 3-ph transformers
Practical transformer Vs. Ideal transformer in MATLAB/Simulink
Efficiency, Losses and Voltage regulation calculations in MATLAB/Simulink
No load and short circuit test of 1-ph and 3-ph transformers in MATLAB/Simulink
So, if you are Looking for a COMPREHENSIVE course about Electric Power Transformer Engineering ?
If your answer is YES, then you're definitely in the right place.