PARTIAL DISCHARGE SENSOR EVALUATION METHOD AND PARTIAL DISCHARGE SENSOR EVALUATION APPARATUS

摘要

A partial discharge sensor evaluation method includes a first frequency characteristic measuring process in which, in a state where a reference antenna 3 for which a frequency characteristic in an effective height is known and a measuring antenna 2 are installed on a flat ground 1 to be separated by a predetermined distance from each other, a transmission characteristic measurer 4 measures a frequency characteristic of a transmission characteristic between the reference antenna 3 and the measuring antenna 2, and a second frequency characteristic measuring process in which, in a state where a measured antenna 9 is installed inside a cylindrical ground 6 buried in a circular opening 5 formed at a position where the reference antenna 3 has been installed, the transmission characteristic measurer 4 measures the frequency characteristic of the transmission characteristic between the measured antenna 9 and the measuring antenna 2.

主权项

1. A partial discharge sensor evaluation method comprising:
a first frequency characteristic measuring process in which, in a state where a reference antenna for which a frequency characteristic in an effective height is known and a measuring antenna are installed on a flat ground to be separated by a predetermined distance from each other, a transmission characteristic measurer measures a frequency characteristic of a transmission characteristic between the reference antenna and the measuring antenna; a second frequency characteristic measuring process in which, in a state where the reference antenna is removed, and a measured antenna is installed inside a cylindrical ground buried in a circular opening formed at a position where the reference antenna has been installed, the transmission characteristic measurer measures the frequency characteristic of the transmission characteristic between the measured antenna and the measuring antenna; and a calculation process in which a calculation apparatus calculates the frequency characteristic in an effective height of the measured antenna based on the frequency characteristic of the transmission characteristic measured in the first frequency characteristic measuring process and the frequency characteristic of the transmission characteristic measured in the second frequency characteristic measuring process.