Real-time heating load control method based on environmental parameter compensation

Abstract

The invention discloses a real-time heating load control method based on environmental parameter compensation. The method comprises the steps that heating load prediction is performed, specifically, aheating load prediction method based on a time sequence is adopted, and a heating system load is predicted; environmental parameter recognition and compensation are performed, specifically, environmental parameters serve as disturbance, and a feedforward compensation loop is arranged so as to eliminate influences of environmental parameter changes on a heating temperature; and prediction controlis performed, specifically, prediction control is adopted, operation is performed according to predicted load demands, and control and regulation operations are performed on a great-inertia heating load system in advance. Compared with the prior art, prediction control is adopted to control the load of a heating system, and the feedforward compensation loop is designed to eliminate the influencesof environmental parameter fluctuation on heating; and the control effect is good, certain disturbance rejection capability is achieved, and the heating quality is effectively improved.

Description

technical field [0001] The invention relates to a real-time heating load control method based on environmental parameter compensation, which belongs to the field of thermal engineering control. Background technique [0002] The heating industry is closely related to people's daily life and plays a certain role in the economic development of thermal power plants. [0003] At present, my country's heating load automation control technology is relatively weak, mainly relying on the experience of staff to adjust, resulting in low central heating efficiency, poor heating quality, low system thermal energy efficiency, and users cannot set and adjust the heating temperature by themselves. These problems affect the quality of heat supply, increase the operating cost of the heating network, waste energy, and reduce the economy of heat supply. [0004] Due to the long heating pipe network, there is a large inertia and delay in the controlled object of heating temperature, resulting i...

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Problems solved by technology

[0003] At present, my country's heating load automation control technology is relatively weak, mainly relying on the staff's experience to adjust, resulting in low central heating efficiency, poor heating quality, low system thermal energy efficiency, and users cannot set and adjust the heating temperature by themselves.

These problems affect the quality of heat supply, increase the operating cost of the heating network, waste energy, and reduce the economy of heat supply

[0004] Due to the long heating pipe network, there is a large inertia and delay in the controlled object of the heating temperature, resulting in a lag in the heat transfer process

The nonlinear characteristics of valves and other equipment in the heating system and the coupling characteristics between the primary and secondary heating circuits make it difficult for traditional control methods to achieve satisfactory control effects

At the same time, fluctuations in environmental parameters such as temperature and wind speed have a certain interference effect on the heating quality of the heating system, and it is difficult to eliminate the influence of environmental parameters in time to ensure the quality of heating

[0005] At present, most heating pipe network control systems still adopt the conventional PID (proportional-integral-derivative) cascade control scheme, which is difficult to effectively deal with the large delay and nonlinear characteristics of the controlled object

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