Corona discharge occurrence point identification device, corona discharge occurrence point identification method

摘要

A device for identifying a location of corona discharge in a power transmission line, the measuring unit measuring a frequency of an electric field around the power transmission line, and a frequency of the electric field of an electric power supplied from the power transmission line. A comparison unit for comparing with a power supply frequency, and a first recording for recording a sound having a sound pressure level higher than a reference sound pressure level among sounds around the power transmission line when the frequency of the electric field is higher than the power supply frequency. And a section. [Selection diagram]