Availability of corona cage for predicting radio interference generated from HVDC transmission line

It is shown that a corona cage is available for predicting radio interference (RI) generated from HVDC (high-voltage direct current) transmission lines. This is based on the assumption that the generation quantity of RI is determined by F/sub max/ (the true maximum conductor surface gradient in the presence of space charge), regardless of surrounding electrode arrangement. This assumption has been verified by tests using corona cages and a test line.<
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