Constant value detection method and device of automatic voltage control system

The invention discloses a constant value detection method and device for an automatic voltage control system, and relates to the technical field of power system control. The method comprises the following steps: receiving a submission operation on a target constant value list, and obtaining constant value setting information in the target constant value list, the constant value setting information comprising substation setting information and power setting information, the power setting information comprises at least one of capacitance setting information, reactance setting information, transformer setting information and voltage setting information; determining a target substation according to the substation setting information, obtaining substation operation data of the target substation, and determining power reference information corresponding to the power setting information according to the substation operation data, the power setting information and preset power reference information corresponding to t