Magnetic field emissions caused by overhead power line: analytical calculations, numerical calculations and measurements

摘要

In the paper an analytical method for calculation of magnetic field emissions, caused by overhead power line, is dealt with. The obtained results are verified with measurements performed on a 400 kV double-system overhead power line and with numerical calculations using finite elements method. The results obtained by the proposed analytical method are compared with results of calculation where conductor sagging is considered. The proposed method is suitable to be used in optimization procedures where the computational time could have an important role.%W artykule opisano analityczn? metod? obliczania emisji pola magnetycznego przez napowietrzn? lini? elektroenergetyczn?. Wyniki porównano z pomiarami przeprowadzonymi na linii napowietrznej dwutorowej 400kV z wykorzystaniem metody elementów skończonych. Proponowana metoda pozwala na du?? oszcz?dno?? czasow? i optymalizacj? tego rodzaju obliczeń.