Comparison of 60-Hz Field Measurements with Digital Analysis of 500-ky Transmission Line

Power system studies involving economics, stability, short circuits, load flows, etc., require a knowledge of transmission line characteristics. Traditionally, these characteristics have been determined either by field tests or by mathematical computations. The construction of a 118-mile bundled EHV line between Johnsonville and Memphis, Tenn., afforded a much needed opportunity to compare tested line characteristic values against digitally computed values. The comparison is of industry interest because of the increasing use of digital computers for such calculations.