Complete-set direct-current power supply system

The utility model discloses a complete-set direct-current power supply system. The system comprises an alternating-current power distribution unit and a plurality of charging modules, the alternating-current power distribution unit is respectively connected with the charging modules, and the charging modules are connected with each other and are connected with a battery pack. The complete-set direct-current power supply system is characterized in that the charging modules are further connected with a voltage reduction silicon chain and a closing circuit, the alternating-current power distribution unit is further connected with a power distribution monitoring module, and the power distribution monitoring module is further connected with the closing circuit and a control circuit respectively; the control circuit and the closing circuit are further connected with an insulation monitoring and detecting module respectively; the charging modules are respectively connected with a monitoring module; and the monitoring module is further connected with the insulation monitoring and detecting module. The complete-set direct-current power supply system is simple in structure and reliable and can achieve the functions of 'remote measuring, remote control, remote signaling and remote adjustment' under an unattended condition.