Energy-saving optimization method for chilled water system of central air conditioner

The invention discloses an energy-saving optimization method for a chilled water system of a central air conditioner. A water chilling unit and a chilled water pump are taken as targets; the water chilling unit and the chilled water pump are comprehensively optimized, chilled water supply temperature is coded in a binary form, multiple codes in the chilled water supply temperature are changed moreeasily during optimization, change of the chilled water supply temperature is completed, and the optimal chilled water temperature set value under the current working condition can be calculated moreeasily; then calculating of corresponding flow requirements according to the chilled water temperature is carried out, and optimizing of the chilled water pump part is carried out by adopting a complete test method when the optimal number of started chilled water pumps and the optimal rotating speed of the chilled water pumps under corresponding conditions are searched; the optimal solution verification workload is reduce