Transmission line fundamentals

Abstract

This chapter describes fundamentals of electric power lines. Different line parameters are presented. Resistance, inductance and capacitance have been derived. Skin effect and proximity effect have been described. Based on line parameters, classification of power line has been done followed by modelling of different parts of power system. A two-port network model of transmission lines has been presented. Transmission parameters, characteristics impedance, image impedance, surge impedance loading, etc. have been presented. Useful parameters of wave propagation have been shown. Comparison of AC overhead lines with DC lines and underground lines has been made. Modelling of synchronous generator and transformer has also been presented. Voltage regulation has been discussed with respect to transmission system. Different useful voltage compensation methods have been described.