Network construction type energy storage control method and system of weak alternating current system

The invention discloses a network construction type energy storage control method and system of a weak alternating current system, the weak alternating current system comprises an inverter, the control period of the control method is an alternating current high and low voltage ride-through period, and the control method comprises the following steps: acquiring the frequency of the inverter in real time; when the frequency of the inverter meets a preset judgment standard, entering an additional control link; according to the inverter frequency obtained in real time, a control frequency is calculated and obtained based on a preset control frequency algorithm; and controlling the inverter by using the control frequency. According to the method, the inverter frequency is obtained in real time, the inverter frequency is judged based on the preset judgment standard, and when the frequency change rate is too large, it is judged that the system has a serious fault, so that the link of obtaining the phase according to