Abstract
This paper presents a new method to estimate positive and zero-sequence transmission line parameters for two mutually coupled lines. The two lines are parallel for part of a distance and are magnetically and capacitively coupled but not electrically coupled. The current and voltage measurements are taken from synchronized phasor measurements (PMUs) installed at both ends of each line. Two cases were considered; the first one is when the two lines are transposed, and in the second case, both lines are untransposed. A transient simulation software tool was used to perform simulation and validate the proposed method for different power system configurations.