Sequence Impedances of Overhead Transmission Lines Carson's Method Versus Rudenberg's Method

This paper is aimed at determining the sequence impedances of transmission lines, including the negative-, positive-, and zero-sequence impedance for single- and double-circuit lines. There are several methods used to determine the sequence impedances such as Carson, later modified by others, and Rudenberg. A comparative study is made between Carson and Rudenberg methods in their prediction of sequence impedances of overhead lines.