Wind power plant current collection line cable head ultrahigh frequency partial discharge signal acquisition circuit

A wind power plant current collection line cable head ultrahigh frequency partial discharge signal acquisition circuit comprises a high frequency partial discharge monitoring sensor, a first operational amplifier and a detector. One end of a coil of the high-frequency partial discharge monitoring sensor is connected with the input end of the first operational amplifier; the other end of the coil of the high-frequency partial discharge monitoring sensor is grounded; the output end of the first operational amplifier is connected with the input end of the detector. According to the utility model, the collected line discharge signals of the cable head terminal of the current collection line of the wind power plant are discharged for multiple times, the discharge duration is reduced, and the peak value of the signals is maintained, so that the ultrahigh-frequency partial discharge signals are free from wave leakage, and the high-frequency signals are collected by adopting a detection mode. And whether the discharg