Electric Field Calculation of Double Circuit Compact Overhead Transmission Line on Same 550kV Towers

Electric field around the double circuit compact overhead transmission line on same 550 kV tower is researched in this paper. Surface charges method is introduced to calculate the surface charges density of every splitting conductor, the surface of every splitting conductor is divided into many arc segments, and linear interpolation is used to express the charges density of every arc segment. In the meantime, partial capacitors between two phases have been studied. An example is presented to illustrate the advantage and the precision of the new given method.