One of the effective factor in designing of AC power transmission line, s Radio & TV level interference due to corrona phenomena, around the right of way of power transmission lines. In this paper, ased on geometric of tower, size of conductors, Number of boundels, Line voltage, nvir onmental conditions, ground resistance frequency of raddio and TV receivers, etc. an interactive PC-based calculating method of radio & TV i nterferance of transmission line is proposed. T he results of RI & TVI calculations for 400 KV Jallal-Neka power transmission line has been investigated.

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