Air compressor unit linkage operation method and system

The invention relates to an air compressor unit linkage operation method and system. The air compressor unit linkage operation method comprises the following steps that when a third air pressure detector in an air storage tank detects that the pressure in the air storage tank is in a reduced state, a controller controls an electromagnetic valve on an air inlet pipe connected with the air storage tank to be opened; the controller calculates the pressure change rate in a first air supply tank according to the pressure value, detected by the first air pressure detector, in the first air supply tank; the controller determines the operation power mapped by the pressure change rate according to a preset mapping relation between the pressure change rate and the operation power; and the controllercontrols a first air compressor to work at determined operation power. According to the air compressor unit linkage operation method and system, gas demands are quickly responded, and high-pressure gas can be stably and time