engleski

Calculation of Power Frequency Electric Field with Boundary Element Methods and Adaptive Cross Approximation

Power system substations and HV power lines are sources of electric and magnetic fields of industrial frequency. Guidelines for permissible electric and magnetic field strengths regarding human exposure and electromagnetic compatibility (EMC) are provided by standards. In this paper a novel method for calculating 3D electric field near power system facilities is presented. Calculation procedure is based on integral equations and boundary element methods. Due to a complex geometry of substation, a large system of equations needs to be solved to find the unknown charge densities over the elements of the model. In order to reduce computational efforts adaptive cross approximation (ACA) is employed. The accuracy of such an approach is benchmarked against direct solver results and measurements.

boundary element methods ; electric field ; adaptive cross approximation ; integral equations ; substations

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