Power distribution device and power distribution system

A power distribution device comprising:

• a first power source input end, which is configured to connect a first power source,
• a second power source input end, which is configured to connect a second power source,
• a first power source switch, which is configured to connect the first power source input end with a bus and switch on and off the power supply of the first power source,
• a second power source switch, which is configured to connect a second power source input end with the bus and switching switch on and off the power supply of the second power source,
• the bus, which is configured to connect with a load device and supply power for the load device, and
• a load device switch, which is configured to switch on and off the power supply to the load device,
• wherein the power distribution device further comprises:
• a load detection unit, which is configured to detect the electrical parameters of the load device,
• a control unit, which is configured to determine whether a fault occurs at the load device according to the electrical parameters of the load device,
• wherein in response to the switching on of the first power source switch, the control unit is configured to control the first power source switch to be switched off first and then switched on in response to the failure of the load device, and control the load device switch to be switched off in a time period between the switching off and the switching on of the first power source switch, or
• in response to the switching on of the second power source switch, the control unit is configured to control the second power source switch to be switched off first and then switched on in response to a failure of the load device, and control the load device switch to be switched off in a time period between the switching off and the switching on of the second power source switch.