Generator shaft voltage detection device and detection method

The invention provides a generator shaft voltage detection device and method, the detection device comprises an insulating block, a metal support and a metal contact piece, and the insulating block is fixedly connected to one side of a generator body; the metal support is detachably connected to the insulating block through a grounding terminal, the grounding terminal is grounded through a lead, and the metal support is fixedly connected with a guide block used for being inserted into the insulating guide plate. The metal contact piece is detachably connected to the metal support through a bolt, the lower end of the metal contact piece is attached to the upper surface of the generator large shaft, and the metal contact piece and the generator large shaft are separated through the insulation guide plate. By adopting the detection device and the detection method provided by the invention, the normal grounding performance of the shaft voltage in the daily process is not influenced, and operation switches such as