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Week 1: Unit – I Basics of Transmission and Distribution
Single line diagrams with components of the electric supply transmission and distribution systems.
Classification of transmission lines: Primary and secondary transmission; standard voltage level used in India.
Classification of transmission lines: based on type of voltage, voltage level, length and others
Week 2: Unit – I Basics of Transmission and Distribution
Characteristics of high voltage for power transmission.
Method of construction of electric supply transmission system – 110 kV, 220 kV, 400 kV.
Method of construction of electric supply distribution systems – 220 V, 400V, 11 kV, 33 kV
Week 3: Unit – II Transmission Line Parameters and Performance
Line Parameters: Concepts of R, L and C of line parameters and types of lines.
Performance of short line: Efficiency, regulation and its derivation, effect of power factor, vector diagram for different power factor.
Week 4: Unit – II Transmission Line Parameters and Performance
Performance of medium line: representation, nominal ‘T’, nominal ‘π’ and end condenser methods.
Transposition of conductors and its necessity.
Skin effect and proximity effect.
Week 5: Unit– III Extra High Voltage Transmission
Extra High Voltage AC (EHVAC) transmission line: Necessity, high voltage substation components such as transformers and other switchgears, advantages, limitations and applications and lines in India. Ferranti and Corona effect.
Week 6: Unit– III Extra High Voltage Transmission
High Voltage DC (HVDC) Transmission Line: Necessity, components, advantages, limitations and applications. Layout of monopolar, bi-Polar and homo-polar transmission lines. Lines in India.
Features of EHVAC and HVDC transmission line.
Week 7: Unit– III Extra High Voltage Transmission
Flexible AC Transmission line: Features, d types of FACTS controller.
New trends in wireless transmission of electrical power
Week 8: Unit– IV A.C. Distribution System
AC distribution: Components classification, requirements of an ideal distribution system, primary and secondary distribution system.
Feeder and distributor, factors to be considered in the design of feeder and distributor.
Week 9: Unit– IV A.C. Distribution System
Types of different distribution schemes: radial, ring, and grid, layout, advantages, disadvantages and applications.
Voltage drop, sending end and receiving end voltage.
Week 10: Unit– IV A.C. Distribution System
Distribution Sub-Station: Classification, site selection, advantages, disadvantages and applications.
Single Line diagram (layout) of 33/11KV Sub-Station, 11KV/400V sub-station,
Symbols and functions of their components.
Week 11: Unit– V Components of Transmission and Distribution Line
Overhead Conductors: Properties of material, types of conductor with trade names, significance of sag.
Line supports: Requirements, types of line structures and their specifications, methods of erection.
Week 12: Unit– V Components of Transmission and Distribution Line
Line Insulators: Properties of insulating material, selection of material, types of insulators and their applications, causes of insulator failure, derivation of equation of string efficiency for string of three suspension insulator, methods of improving string efficiency.
Underground Cables: Requirements, classification, construction, comparison with overhead lines, cable laying, and cable jointing.
Dr. Navin Sam K
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