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SYLLABUS
UNIT-I
Transmission Line Parameters : Types of conductors – Calculation of resistance for solid conductors – Calculation of inductance for single phase and three phase – Single and double circuit lines – Concept of GMR and GMD – Symmetrical and asymmetrical conductor configuration with and without transposition – Bundled conductors – Numerical Problems – Calculation of capacitance for 2 wire and 3 wire systems – Effect of ground on capacitance – Capacitance calculations for symmetrical and asymmetrical single and three phase – Single and double circuit lines – Numerical problems.
UNIT-II
Performance of Short and Medium Length Transmission Lines : Classification of Transmission Lines – Short, medium, long line and their model representations – Nominal-T – Nominal-Pie and A,B,C,D Constants for symmetrical and Asymmetrical Networks – Numerical problems – Mathematical solutions to estimate regulation and efficiency of all types of lines – Numerical problems.
UNIT-III
Performance of Long Transmission Lines : Long Transmission Line – Rigorous solution – Evaluation of A,B,C,D Constants – Interpretation of the Long Line Equations – Regulation and Efficiency – Incident, Refected and Refracted Waves – Surge Impedance and SIL of Long Lines – Wave Length and Velocity of Propagation of Waves – Representation of Long Lines – Equivalent–T and Equivalent Pie network models (Numerical Problems).
UNIT-IV
Power Systems Transients : Types of System Transients – Travelling or Progagation of Surges – Attenuation – Distortion – Reflection and Refraction Coefficients – Termination of lines with different types of conditions – Open Circuited Line – Short circuited Line – T-Junction – Lumped Reactive Junctions.
UNIT-V
Various Factors Governing the Performance of Transmission Line : Skin and Proximity effects – Description and effect on Resistance of Solid Conductors – Ferranti effect – Charging Current – Shunt Compensation – Corona – Description of the phenomenon – Factors affecting corona – Critical voltages and power loss – Radio Interference.
UNIT-VI
Sag and Tension Calculations and Overhead Line Insulators : Sag and Tension calculations with equal and unequal heights of towers – Effect of Wind and Ice on weight of Conductor – Numerical problems – Stringing chart and sag template and its applications – Types of Insulators – String efficiency and Methods for improvement – Numerical Problems – Voltage distribution – Calculation of string efficiency – Capacitance grading and Static Shielding.
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CategoriesEngineering
Format EPUB
TypeeBook