AVC control method in energy storage power station considering multiple reactive power sources

The invention discloses an in-station AVC (Automatic Voltage Control) method for an energy storage power station considering multiple reactive power sources, which comprises the following steps of: judging whether the voltage at the low-voltage side of a main transformer exceeds a limit value or not, if so, regulating the voltage at the low-voltage side of the main transformer, otherwise, receiving a control target value issued by power grid dispatching in real time, and judging whether the difference value between the target value and an actual value is lower than a set dead zone or not; if yes, reactive replacement is carried out, and if not, reactive adjustment is carried out; if the control target value is the bus voltage, converting the bus voltage into reactive power, and taking the reactive power value as the control target value in subsequent adjustment; respectively acquiring the current reactive power and adjustable reactive power upper and lower limits of each SVG and PCS, judging whether a total s