Regulation and control method and system for secondary network of heat exchange station

Abstract

The invention discloses a regulation and control method and system for a secondary network of a heat exchange station. The regulation and control method comprises the steps that a secondary network return water temperature detection value and an indoor temperature detection value are obtained; a secondary network return water temperature control set value is calculated according to the indoor temperature detection value and a secondary network non-intermediate unit return water temperature correction value; the secondary network return water temperature control set value is compared with the secondary network return water temperature detection value to obtain a return water temperature control error; an opening degree change numerical value of a secondary network regulation and control valve is calculated according to the return water temperature control error and secondary network physical parameters; and the opening degree of the secondary network regulation and control valve is adjusted according to the opening degree change numerical value of the secondary network regulation and control valve. According to the regulation and control method and system for the secondary network of the heat exchange station, the thermal balance degree, the hydraulic balance degree and the control precision of the secondary network and heat consumers are improved, necessary conditions are provided for optimized operation of the heat exchange station, the heat supply quality requirement of the heat consumers is met, free heat of the system is fully utilized, system energy consumption and pollutant emission are reduced, and labor cost and labor intensity are reduced.

Description

technical field [0001] The invention relates to the technical field of heat exchange station control in a central heating system, in particular to a method and system for controlling a secondary network of a heat exchange station. Background technique [0002] At present, the secondary network carried by the heat exchange station of the central heating system is one of the main links to ensure the heating quality of heat users, the balance of pipe network conditions, and energy saving and consumption reduction. On the premise that the heat source of the heating system, the primary network and the heat exchange station have optimized control means and measures, the secondary network becomes the "last mile" of the heating system. Most of the existing secondary network building / unit thermal inlets only have the function of valve isolation. Even if the regulating valve is installed, it is rarely adjusted or the function fails in actual operation; in addition, some secondary netw...

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Problems solved by technology

[0005] The purpose of the present invention is to provide a method and system for regulating and controlling the secondary network of the heat exchange station to solve the problem of thermal and hydraulic balance imbalance between the secondary network of the heat exchange station and the heat user

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