Abstract
The paper presents a finite element method for numerical calculation of magnetic flux density around a high voltage power transmission line. The need of such calculation is based on growing safety demands of people exposed to the action of external magnetic field as well as reduce the cost of people protection. Method extends the calculation of magnetic flux density around the straight infinite conductor on the general shape by application of Biot-Savart law in its general form. Method eliminates the usual errors in calculation created by approximation of infinite straight conductors in power line applications. The method has been extensively tested on a set of shapes that analytical solutions are known. It has been shown that the numerical solution converges uniformly to analytical solution and the accuracy depends only on the number of finite elements.
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