Building-level energy consumption optimization method and system

Abstract

The invention discloses a building-level energy consumption optimization method and system. The method comprises the steps that an operation energy consumption objective function is constructed according to the on-off state of refrigeration equipment of a cooling unit, the energy consumption rate under partial load and the energy consumption rate under full load; constructing an indoor comfort objective function according to a preset indoor standard temperature and an indoor actual temperature; constructing a cooling unit operation model according to the operation energy consumption objective function and the indoor comfort objective function; and according to the refrigeration demand constraint and the indoor temperature threshold constraint, the cooling water inlet temperature, the cooling water outlet temperature and the partial load rate of the cooling unit are subjected to simulation control by adopting the cooling unit operation model, so that a coordinated output scheme of the cooling unit is obtained. And by taking reduction of operation energy consumption of the cooling unit and improvement of user comfort as dual optimization objectives, an optimized operation model of the building cooling machine system is constructed, and the problem of coordinated output of the cooling unit is solved.

Description

technical field [0001] The invention relates to the technical field of energy consumption optimization, in particular to a building-level energy consumption optimization method and system. Background technique [0002] The statements in this section merely provide background information related to the present invention and do not necessarily constitute prior art. [0003] Building energy consumption accounts for about one-third of the total energy consumption of the whole society, and the total amount of buildings and energy consumption intensity are still increasing. Among them, the unit energy consumption of commercial buildings is more than twice that of other buildings, and the energy consumption of cooling stations is less than that of buildings. The cooling unit is the equipment with the largest energy consumption in the refrigeration station, and it is the key object of the optimal control of building energy consumption. Therefore, it is particularly important to sel...

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Problems solved by technology

Manually adjusting the operating status of equipment is still a common phenomenon. On the one hand, it is difficult to achieve a good energy-saving effect, and on the other hand, it is also difficult to adapt to complex and changeable air-conditioning energy-saving control and user comfort requirements.

In addition, most of the energy-saving optimization control systems on the market only partially optimize the "source" equipment or terminal equipment, and also do not lack the analysis and optimization of user comfort in buildings, making it difficult to achieve a balance between economy and comfort

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