The application provides a power supply
control circuit, a
transformer area
voltage control system and method, comprising: an AC-DC module, an input end of which is connected with an
AC power supply on a power
supply side, and an output end of which is connected with a
DC bus; a DC-
AC module, an input end of which is connected with the
DC bus, and an output end of which is connected with a stable
AC power supply on a user side; a first bidirectional DC conversion module, a first end of which is connected with the
DC bus, and a second end of which is connected with a first battery; a
new energy power generation module, an output end of which is connected with the second end of the first bidirectional DC conversion module, and which is used for generating
electric energy and adjusting power generation output power; a second bidirectional DC conversion module, a first end of which is connected with the DC
bus, and a second end of which is connected with a second battery; and a control module, which controls each bidirectional DC conversion module. The application can obtain a stable
AC power supply on the user side, can normally work even if the
voltage on the input side is too low, has
low demand for
power grid power, and fully utilizes
new energy to improve
environmental protection, economy and efficiency.