Air source heat pump centralized heating system group control method based on load matching and frost suppression multiple targets

The invention discloses an air source heat pump centralized heating system group control method based on load matching and frost suppression multiple targets, and relates to the field of an air sourceheat pump frost suppression technology and a group control technology. Firstly, a basic configuration condition of a heat source side of an air-source heat pump centralized heating system is determined, and the total load rate and the frost suppression target of the system are determined according to actual operating conditions; secondly, according to the needs and the targets, the unit startingnumber and the load rate of each start-up unit in the system are determined; thirdly, the compressor rotating speed and the fan rotating speed of a single unit variable-frequency air source heat pumpor the running number of compressors in a single multi-compressor parallel unit are determined; and finally, through a central data processing controller, control signals are sent to a control board of each unit in a unified ma