Power system adaptive frequency voltage emergency control method and system, and medium

The invention discloses a self-adaptive frequency voltage emergency control method and system for a power system and a medium. The method comprises the steps that data collection is conducted on substation bus voltage and substation control layer messages, the frequency and the amplitude are extracted, and outgoing line interval property judgment is conducted; the frequency, the amplitude and the change rate of the bus voltage of the transformer substation are compared with a set constant value item, so that the action round of the emergency control action of the current frequency voltage is determined; according to the corresponding action turns and the outgoing line interval data, the outgoing line interval property is carried out, and on the premise that the total load carried by the cut interval specified by the constant value sheet is met, distribution network branch loads are cut off preferentially, so that load shedding is achieved. Aiming at the challenge that large-scale access of a novel power syste