UHF (Ultra High Frequency) sensor applied to partial discharge detection

The utility model relates to a UHS sensor applied to partial discharge detection, belonging to the technical field of detection instruments for power equipment. The UHF sensor applied to partial discharge detection is formed by smoothly connecting a UHF antenna, a filter circuit, a UHF sensor power supply, a signal conditioning unit and a sensor signal output port, wherein a signal surface and a grounding surface of the UHF antenna are made of copper, and applied to a UHF antenna substrate via printed circuit board technology; and signals acquired by the antenna are output to the filter circuit via an antenna output port. The receiving area of the UHF sensor antenna is controlled, so that the UHF sensor can detect internal air insulation defect of electrical equipment; and the receiving frequency band of the antenna is 750MHz to 1.5GHz, which can effectively avoid interference generated by corona discharge so that the sensor has stronger anti-interference capability.