Single-phase intelligent power supply management method and device

The invention provides a single-phase intelligent power supply management method, which comprises the following steps of (1) collecting voltage and current in a three-phase line; (2) calculating powerquality parameters of three phases separately; (3) judging one phase of line with the optimal power quality parameter; and (4) switching a power supply circuit into the optimal phase of line. Meanwhile, the invention further provides a corresponding single-phase intelligent power supply management device. According to the single-phase intelligent power supply management method and device, the power quality of three phases of electricity can be monitored in real time, the power supply quality of electric equipment can be ensured through directly switching the electric equipment into one phaseof line with the optimal power quality parameter or a stand-by power supply, and continuous power supply for the electrical equipment can also be ensured through use of the stand-by power supply, so that the control mode of di