ABSTRACT
This chapter discusses methods by which the capacitance of a transmission line can be computed. For this purpose it employs an approach analogous to the one for computing the inductive reactance of a transmission line. The chapter examines the simple case of one circular infinitely long conductor. It also examines the electric field generated by two parallel infinitely long circular conductors charged with electric charge. For this purpose, consider two parallel infinitely long circular conductors. The chapter then illustrates a three-phase line without ground wires. Neutral/ground wires and the earth are conducting media in the vicinity of the line which may be charged with electric charge due to the electric field of the line. Alternatively, these conducting media alter the electric field of the line and affect the capacitance of the line. The chapter also explores methods by which the effects of earth and neutral or overhead ground wires on line capacitance can be quantified.
