DI03000101 · Semester 3 · 5G scheme
Electrical Power Transmission & Distribution
Notes and solutions following the Gujarat Technological University (GTU) syllabus for DI03000101. Independent material — not issued by the university.
Materials
Complete Book
The whole syllabus, unit by unit, written for the exam.
Complete Book
82 pages
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Slides
Lecture slides for revision.
Lecture slides (full course)
472 pages
Premium Preview · 10 pagesSlides (compact edition)
624 pages
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Past Papers
Original question papers from previous exams.
PYQ Solutions
Past university papers, fully solved.
Solved past papers — detailed answers
29 pages · English + ગુજરાતી
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Syllabus units
Unit 1: Elements of overhead transmission lines
- (1) Single line diagram with components of the electric supply transmission and distribution system.
- (2) Classification of transmission lines, standard voltage levels used in India.
- (3) Comparison between Overhead and Underground system
- (4) Different types of conductors and its properties i)Solid Conductor ii) Hollow Conductor. iii) Stranded conductor: AAC, AAAC, ACSR, High performance conductor iv) Photonic coating on conductor, covered conductor, dynamic line rating
- (5) Skin effect, Proximity effect
- (6) Bundled Conductors.
- (7) Types of line supports and its desirable properties i )Steel Pole ii) RCC pole iii) Lattice steel tower.
- (8) Types of Insulators and its materials i)pin type ii) Suspension type iii) Strain insulator iv) Shackle insulator v) Stay insulator.
- (9) Desirable properties of insulators and Causes of Insulator failure.
- (10) String efficiency and methods of Improving String efficiency.
- (11) Basic numerical based on String efficiency.
- (12) Sag and its calculations.
- (13) Effect of Atmospheric Conditions on sag.
- (14) Basic numerical based on sag.
- (15) Corona effect: Factors affecting corona, Advantages and disadvantages of corona, Methods of reducing corona effect.
- (16) Right of way (ROW) in transmission lines.
Unit 2: Transmission line parameters and performance
- (1) Transmission line parameters (constants) and their representation in short & medium transmission lines.
- (2) Differentiate the features of short, medium and long transmission lines.
- (3) Transposition of line conductors & its necessity.
- (4) Performances of short and medium transmission lines (End condenser method, T and 𝜋 Method).
- (5) Effect of load power factor on performance of short and medium transmissions lines.
- (6) Numerical based on line parameters and performance of short & medium transmission lines.
- (7) Ferranti effect.
- (8) Grid system in India and it's hierarchy.
- (9) Concept of One Sun, One World, One Grid.
- (10) Importance and functions of Load dispatch center.
Unit 3: HVAC and HVDC System
- (1) Economic consideration in the choice of system voltage.
- (2) Economic consideration in the choice of conductor size (Kelvin's law).
- (3) Advantage and limitations of EHV AC transmission system.
- (4) Concept of choice of HVDC transmission vs EHVA.C. Transmission for Long high-power transmission lines.
- (5) Single line diagram of HVDC transmission.
- (6) Types of HVDC transmission systems.
- (7) Merits, demerits and applications of HVDC transmission system.
- (8) Comparison between HVDC and HVAC transmission systems.
- (9) HVDC system in India.
- (10) Need of FACTS, Types of FACTS Devices and Advantages of FACTS.
Unit 4: A.C. Distribution System
- (1) Requirement of an ideal AC distribution.
- (2) Feeder, Distributor & Service Mains in Distribution system.
- (3) Classification of Distribution System
- (4) AC Distribution System: i) Primary Distribution ii) Secondary Distribution.
- (5) Different Schemes of Distribution connection. 1.Radial System 2. Ring Main System 3. Inter connected System.
- (6) Design Consideration for Feeder and Distributors.
- (7) Voltage drop and load calculation for concentrated and distributed load.
- (8) Numerical based on AC distribution.
- (9) Necessity of cables & general construction of underground cable.
- (10) Classification of cables.
- (11) Cable laying and cable jointing.
- (12) Recycling cables.
About this course
The "Electrical Power Transmission and Distribution" course is a critical infrastructure that ensures the reliable delivery of electrical energy from power generation sources to consumers This course deals in detail with elements & performance of overhead transmission line and HVDC transmission systems, distribution system components & cables. By studying this course, students gain the expertise needed to design, operate, and maintain efficient electrical networks, ensuring reliable electricity supply for residential, commercial, and industrial use.