Low-voltage regulator and photovoltaic coordinated voltage regulation method

The invention provides a low-voltage regulator and photovoltaic coordinated voltage regulation method, which relates to the technical field of power grid operation control, and comprises the following steps: acquiring basic parameters of a voltage regulation process, and setting a voltage upper limit value, a voltage lower limit value and the duration of a voltage control period; obtaining the voltage value of each user behind the voltage regulator installation point and the line operation data; judging whether the current low-voltage line has a voltage regulation requirement or not, if so, regulating the voltage by adopting a photovoltaic voltage regulation mode or a voltage regulator voltage regulation mode, and if not, improving the photovoltaic active power utilization rate and enabling the photovoltaic power to be fully generated; and waiting for the duration of the voltage control period, entering the next voltage control period, and re-acquiring the voltage value of each user behind the voltage regulat