Intelligent frequency modulation control method and system for heat supply and steam extraction of thermal power generating unit

The invention provides an intelligent frequency modulation control method and system for heat supply and steam extraction of a thermal power generating unit, and relates to the technical field of frequency modulation control, and the method comprises the steps: interacting a target thermal power generating unit, obtaining the working condition of the target thermal power generating unit, detecting and obtaining the real-time heat storage capacity of the target thermal power generating unit, and triggering the load frequency modulation of the target thermal power generating unit; and whether the real-time heat storage capacity meets the heat supply and steam extraction adjustment requirement or not is judged, the adjustment range of heat supply and steam extraction adjustment is determined according to a frequency modulation target, corresponding steam flow change values of acting of a medium-pressure cylinder and a low-pressure cylinder are obtained, and frequency modulation control over the target thermal po