Abstract
A new analytical model for predicting electromagnetic interference from corona on electric power lines has been developed. The corona is modeled as electric dipoles located on the surface of the power line conductor which is located above a homogeneous lossy Earth. The position and driving current of each dipole are described statistically. Expressions are found for the spectral density of the fields radiated by the corona and the currents induced on the power line. The main contribution of the new model is that it is valid in frequency ranges (i.e., 2–30 MHz) for which no model presently exists and for distances and directions from the power line which are essentially unrestricted. The model is shown to agree well with an empirical formula which was developed from the limited experimental data available.
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