Data-driven accurate regulation and control method for urban central heating system

Abstract

The invention relates to a data-driven accurate regulation and control method for an urban central heating system. The method comprises the following steps of Step 1, establishing a heat load demand index of each building and a corresponding prediction model; Step 2, according to the prediction model, calculating a heat load of each building reaching a target room temperature under a certain weather condition and the corresponding relationship of the building entrance flow and secondary temperature supply combination; Step 3, calculating a secondary temperature supply and flow distribution scheme enabling each building to reach the target room temperature under the constraint condition that the total flow of the secondary side is certain; Step 4, adjusting the building entrance flow of each building according to the flow distribution scheme; Step 5, establishing a plate exchange model for the operation of a heating station; and Step 6, calculating the opening degree of a primary side valve through the plate exchange model, and executing the control operation according to the opening degree of the primary side valve. The method provided by the invention has the advantages that a common electric control valve is arranged at the entrance of the building of the secondary side, the opening degree of the valve is calculated by a control system, and an electric signal is sent to the electric control valve, so that the control cost at each building is reduced.

Description

technical field [0001] The invention belongs to the field of advanced control of heating systems, and in particular relates to a method and system for model-predicting the load of each building on the secondary side and optimizing the flow of each building in order to realize on-demand precise regulation of the central heating system . Background technique [0002] The heating system produces high-temperature hot water in the heat source plant and drives the hot water to circulate in the primary side pipe network to deliver heat energy to each thermal station. In the thermal station, the primary side and the secondary side perform heat exchange to transfer heat from the primary side to the secondary side. The heat is exchanged from the secondary side to the secondary side, and the secondary side supplies heat to each heat user in the secondary side pipe network. However, the current thermal power station cannot accurately predict the specific load demand of each heat user. ...

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Problems solved by technology

[0002] The heating system produces high-temperature hot water in the heat source plant and drives the hot water to circulate in the primary side pipe network to deliver heat energy to each thermal station. In the thermal station, the primary side and the secondary side perform heat exchange to transfer heat from the primary side to the secondary side. The heat is exchanged from the secondary side to the secondary side, and the secondary side supplies heat to each heat user in the secondary side pipe network. However, the current thermal power station cannot accurately predict the specific load demand of each heat user. The problem is that excessive heating measures are often taken, resulting in energy waste and low utilization efficiency. In order to achieve on-demand heating, the thermal load control of the secondary side buildings uses relatively expensive temperature-controlled automatic regulating valves. higher cost

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