Insulation detection device and method for high-voltage direct-current power supply system

The invention discloses an insulation detection device for a high-voltage direct-current power supply system. The insulation detection device comprises a base, wherein moving wheels are arranged on two sides of the base; a charging jack is formed in the side surface, bearing seats are fixed on two sides of the front and rear ends of the interior through screws, a rotating shaft of each moving wheel is arranged in the interior of the corresponding bearing seat in a sleeving manner, an inner fixed mount is arranged at the center of the interior of the base, a storage battery is arranged at the upper part of the inner fixed mount, the storage battery is electrically connected with the charging jack, a heat dissipator is arranged at the bottom of the storage battery, and ventilation holes areformed in the bottom of the heat dissipator; a detection device is arranged on one side of the inner fixed mount, and automatic winders are arranged on two sides of the detection device; a groove in the front end of the base