Electromagnetic and Electrostatic Transmission-Line Parameters by Digital Computer

This paper describes a versatile digital computer program for calculating electromagnetic and electrostatic parameters for an untransposed section of overhead line. Applications to current distribution, electromagnetic and electrostatic unbalance, voltage gradients on conductor surfaces, and other problems are discussed. A technique for establishing upper and lower bounds for Carson's earth-return correction and a modified symmetrical component transformation are introduced as new concepts. The flexibility of the proposed computer program offers a means for solving a large variety of related electromagnetic problems.