DEVICE FOR MONITORING A GAS-INSULATED HIGH-VOLTAGE SUBSTATION BY MEASURING PARTIAL DISCHARGES

摘要

The present invention relates to a device for monitoring a gas-insulated high-voltage substation by measuring partial discharges, including an enclosure (11); an electrical field sensor (10) comprising a metal plate (13) attached to the wall of the enclosure (11); a conical metal part (12) closed with a cover at the flared portion thereof, the other end of same extending into the enclosure and opening into a bushing (14) that extends through the metal plate (13) which serves as a back-plane for the conical antenna thus formed; and a connector (15) connected to the bushing (14), which can be used to connect the bushing (14) to a measurement and display device via a coaxial cable.