Central air-conditioning system and its control system and control method

Abstract

The invention relates to a central air-conditioning system and its control system and control method. In one aspect, a central air-conditioning system (CA) is provided, the central air-conditioning system comprising a plurality of system devices (20) and a control system (10) adapted to control the operation of the central air-conditioning system. At least one system device among the plurality of system devices is integrated with a device controller (12) to constitute an intelligent system device, and the device controller constitutes at least a part of the control system. According to the present invention, the order-based development method of the control system of the central air-conditioning system can be improved into a standardized and generalized development method.

Description

technical field [0001] The invention relates to the technical field of air conditioning, in particular to a central air conditioning system and its control system and control method. Background technique [0002] The cold station of the central air-conditioning system provides air-conditioned chilled water for public buildings, and generally consists of chillers, refrigeration pumps, cooling pumps, cooling towers, valves, and automatic control systems. The cold station automatic control system of the central air-conditioning system can realize automatic management and control, greatly improve the automation level of the cold station, reduce management manpower and material resources, and improve the energy efficiency level of the central air-conditioning system. [0003] According to the related art, the cold station automatic control system of the central air-conditioning system is provided by an independent group control manufacturer. Specifically, in actual engineering, ...

AI Technical Summary

Problems solved by technology

As a result, problems such as: the large number of cold station equipment control information points lead to a huge workload of manual network configuration, and professional engineers need to complete the configuration on site, with high labor costs and long time periods; if the on-site equipment If it is different from the original plan, it is easy to cause the automatic control system to fail to match the field equipment

[0007] It is difficult to adapt to changes in equipment status during the operation of the central air-conditioning system

For example, during the actual operation of the central air-conditioning system, if some system equipment in the central air-conditioning system is changed, other types of system equipment are replaced, the number of system equipment is increased or decreased, etc., the automatic control system needs to be adjusted. The hardware interface, system configuration, control algorithm, etc. need to be modified accordingly, which often requires tedious operations by professional engineers on site

[0008] In short, since the automatic control system of the central air-conditioning system of the related technology is centralized and independent of field equipment, it requires very professional personnel to carry out order-based development and install and debug on site, which greatly limits the cooling capacity of the central air-conditioning system. Large-scale development and application of station automatic control system

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