ABSTRACT

This chapter explains the terms used in the electric power industry, what a substation is, and why it is necessary to transmit electricity at an elevated voltage. It describes the difference between transmission and distribution, the resistance of a length of wire, and why transmission line conductors have inductance and capacitance. The chapter explores the inductance and capacitance of transmission lines, what transposition in transmission line is and how it is done, and conductors carrying a given electric current under given conditions. It shows why it is necessary to ground electric equipment and also describes different ways that equipment can be grounded. The chapter also explores the use of Thevenin's and Norton's theorems for solving network problems, and the principle of superposition for network problem solving. The principle of superposition is a useful method that can be used in many problems.