Syllabus:

UNIT I Power System Components : Single line diagram of power system, brief description of power system elements, synchronous machine, transformer, transmission line, bus bar, circuit breaker and isolator. Supply System: different kinds of supply system and their comparison, choice of transmission voltage. Transmission Lines: configurations, types of conductors, resistance of line, skin effect, Kelvinâ??s law. proximity effect.

UNIT II Over Head Transmission Lines : Calculation of inductance and capacitance of single phase, three phase, single circuit and double circuit ,transmission lines, representation and performance of short, medium and long transmission lines, Ferranti effect, surge impedance loading.

UNIT III Corona and Interference : Phenomenon of corona, corona formation, calculation of potential gradient, corona loss, factors affecting corona, methods of reducing corona and interference, electrostatic and electromagnetic interference with communication lines. Overhead line Insulators: type of insulators and their applications, potential distribution over a string of insulators, methods of equalizing the potential, string efficiency.

UNIT IV Mechanical Design of transmission line : Catenary curve, calculation of sag & tension, effects of wind and ice loading, sag template, vibration dampers. Insulated cables: type of cables and their construction, dielectric stress, grading of cables, insulation resistance, capacitance of single phase and three phase cables, dielectric loss, heating of cables.

UNIT V Distribution systems :Basic idea of distribution systems, different types of loads, voltage drop in distributors, radial and ring main type of distributions.