Ice storage air conditioning system, control method and device thereof and controller

Abstract

The invention relates to an ice storage air conditioning system, a control method and device thereof and a controller. The air conditioning system comprises a refrigerating unit and an ice storage pool. The method comprises the steps that the total cooling capacity of the air conditioning system and the initial cooling share of the refrigerating unit and the initial cooling share of the ice storage pool are determined, and the air conditioning system is controlled to operate; after every first preset time, the current total cooling capacity of the air conditioning system and the current cooling share of the refrigerating unit are determined, and whether the absolute value of the difference value between the current cooling share and the initial cooling share of the refrigerating unit is smaller than or equal to a preset value or not is judged; and if not, the absolute value of the difference value between the current cold supply share and the initial cold supply share of the refrigerating unit is smaller than or equal to the preset value through adjustment. By means of the arrangement, the ice storage air conditioning system can utilize the cooling capacity of the ice storage pool to the maximum extent, reasonably and freely according to needs, meanwhile, efficient utilization of peak load shifting of electric energy is achieved, and more reasonable cooling, working condition maintenance, energy conservation and emission reduction of the system are facilitated.

Description

technical field [0001] The present application relates to the technical field of ice-storage air-conditioning, and in particular to an ice-storage air-conditioning system and its control method, device and controller. Background technique [0002] Due to the rapid growth of power consumption in my country and the shortage of peak power, how to transfer peak power demand, "shift peaks and fill valleys", balance power supply, and improve the effective use of power energy has become a problem that many countries attach importance to solving. [0003] Based on this, the application of ice-storage air-conditioning technology in my country will become an irreversible trend. Ice-storage air-conditioning technology refers to using the low-load power at night to make ice and store it in the ice storage device. In order to reduce the power load of air-conditioning and the installed capacity of air-conditioning system during peak hours of the power grid. It can effectively utilize low-...

AI Technical Summary

Problems solved by technology

[0004] This application provides an ice-storage air-conditioning system and its control method, device, and controller to solve the problem that the current ice-storage air-conditioning technology is not yet mature in utilization, for example, there is insufficient ice storage to supply building cooling capacity around the clock, and cooling capacity utilization Unreasonable, low utilization rate of cooling capacity, system cannot effectively control the input of ice storage cooling capacity, etc.

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