This invention discloses a dynamic coordinated control method for
chiller units based on multi-level load zone division. The method includes: acquiring parameters of the
chiller units, water pumps, and cooling towers, and constructing a high-precision
mathematical model of equipment performance; dividing the
system into continuous, non-overlapping multi-level load zones based on the rated
cooling capacity combinations of all
chiller units; real-time acquisition of load data and matching it to the corresponding zones, constructing a joint optimization model of the main and auxiliary units with the objective of minimizing the total power of the chiller
plant, solving for the optimal unit combination, load allocation, and auxiliary unit operating parameters, and executing the model; performing coordinated optimization of the water pumps and cooling towers, using
hysteresis switching and minimum dwell time mechanisms to determine zone switching, and planning the operation sequence and constraining parameter adjustment rates for start-up, shutdown, and sudden load changes. This invention achieves precise matching and dynamic coordination of the main and auxiliary units under all operating conditions, improving the overall energy efficiency of the
system, avoiding unsteady-state impacts, and extending equipment lifespan.