Line insulation and fault detection apparatus and method for handling DC power supply system Auv

The present invention relates to AUV (Autonomous Underwater Vehicle) line insulating means and detecting a DC power supply system fault handling, on-line detection module and insulating the device power supply control unit; said detection module includes an insulating dielectric line detection control unit, the detection module bus insulation and branched Road insulation detection module; the method comprising: bus insulation detection module of the power supply bus line equipment power supply control unit is circuit-switched, power bus insulation case of the reaction by the circuit parameters of the conversion, the insulation detection control unit calculates power bus whether insulation decrease present case, if the insulation resistance value drops to the warning, the insulation of each branch interrogation detection module associated parametric data, obtained by calculation and then reported to the insulation of each branch of the device power supply control unit, the power supply control apparatus according to each branch unit the insulation and navigation status of autonomous AUV troubleshooting. The present invention includes a characteristic line detection, online troubleshooting.