Reverse power supply management method, apparatus and system

A reverse power supply management method, comprising:

• acquiring reverse power supply information of terminal devices of various links during a process that various terminal devices connected to a local end device stably perform reverse power supply on the local end device;
• determining reverse power supply management information of the various terminal devices according to the acquired reverse power supply information of the terminal devices of the various links;
• and
• transmitting respectively the reverse power supply management information of the various terminal devices to corresponding terminal devices to instruct the various terminal devices to adjust parameters for supplying reverse power to the local end device according to the received reverse power supply management information;
• wherein, the reverse power supply information comprises:
• reverse power supply capability information of a terminal device and attribute information of a link;
• wherein, said acquiring reverse power supply information of terminal devices of various links comprises:
• the local end device acquiring the reverse power supply capability information of the various terminal devices in a predetermined mode, wherein, the reverse power supply capability information comprises reverse power supply capacity, power status and service status;
• the local end device acquiring the attribute information of the various links in a predetermined mode, wherein, the attribute information comprises a length of a line and impedance characteristic of the line.