Power System 1

Unit 1

Introduction: Basic structure of power system, sources of electric energy: conventional and non- conventional; Layout of Hydro-electric, Thermal and Nuclear power plants, Concept of cogeneration, combined heat and power, and captive power plants, SPV generation at household level.

Basic Structure of Smart Grid, Communication and IT components in power system.

Load curve, load duration curve, Concept of Connected Load, Maximum Demand, Average load, Demand Factor, Load factor, Diversity Factor, Capacity Factor, Utilization factor, Plant use factor, Installed capacity, Reserves, role of load diversity in power system economy. Load Sharing between Base load and Peak Load

Unit 2

(Transmission & Distribution of Electric Power- I):

Single line diagram of Power system, choice of transmission voltage, One-line diagram, Impedance and reactance diagram, per unit system changing the base of per unit quantities, advantages of per unit system Different kinds of supply system and their comparison.

Configurations of transmission lines: Types of conductors, Bundled Conductors, resistance of line, skin effect, Kelvin’s law, Proximity effect, Corona Effect, factors affecting the Corona, Corona Power Loss, Advantages and Disadvantages.

Performance of Lines: Representation of lines, short transmission lines, medium length lines, nominal T and ᴫ-representations, long transmission lines. The equivalent circuit representation of a long Line, A, B, C, D ELECTRICAL & ELECTRONICS ENGINEERING Curriculum & Evaluation Scheme EN (V & VI semester) constants, Ferranti Effect.

Unit 3

(Transmission & Distribution of Electric Power- II):

Mechanical Design of Over Headlines: Catenary curve, calculation of sag & tension, effects of wind and ice loading, sag template, vibration dampers Overhead line Insulators: Type of insulators and their applications, potential distribution over a string of insulators, methods of equalizing the potential, string efficiency