Corona Characteristics of Simulated Rain

Influence of rain upon electromagnetic characteristics of corona was studied in an experimental setup consisting of a single corona point located in cylindrical geometry. Distilled water flowing to the corona point through a plastic tube simulated the rain. Wave shape of current pulses, their repetition rate and the frequency spectrum were observed for the ac as well as dc excitations of both p-olarities. Level of applied voltage and the rate of water flow were the parameters varied.