The invention provides a power supply networking coordination control method and device, control equipment and a storage medium. The method comprises the steps: the actual frequency of a power grid isobtained; according to the difference between the preset rated frequency and the actual frequency of the power grid, a secondary frequency variable quantity is obtained; and an emergency power supplyfrequency reference value is obtained based on the sum of the primary frequency variable quantity and the secondary frequency variable quantity obtained after low-pass filtering, wherein the primaryfrequency variable quantity is obtained through a linear droop control mode. The actual power grid frequency of the microgrid connected with the emergency power supply is obtained; and secondary control is carried out based on the actual power grid frequency, so that the problem that frequency control is out of control easily when a large deviation exists between the actual power grid frequency and the theoretical frequency is avoided, and the technical problem of poor stability of an existing power supply networking coordination control method is solved.