Air source heat pump dynamic energy efficiency optimization control method under outdoor temperature disturbance condition

Abstract

The invention discloses an air source heat pump dynamic energy efficiency optimization control method under the outdoor temperature disturbance condition. The method comprises the steps that S1, a dynamic system model of an air source heat pump for adjusting the indoor temperature is established; s2, determining an input variable and an output variable of the controlled object, and performing a simulation experiment to obtain a data set; s3, data preprocessing is carried out, and an air source heat pump system state space model is established; s4, initializing a prediction controller, setting prediction parameters, and establishing a system output prediction equation; s5, determining system constraint conditions, and constructing a multi-constraint optimization problem; s6, the constraint optimization problem is converted into a standard linear programming problem to be solved; and S7, feeding back the actual output of the controlled object to the controller in real time, moving the time base point from k to k + 1, returning to S6, and repeatedly executing S6-S7. According to the method, the user side disturbance influence is comprehensively considered, the indoor temperature is controlled in a high-precision mode, meanwhile, the dynamic energy efficiency during operation of the heat pump is kept at the optimal value, and the thermal comfort and economical efficiency of system operation are improved.

Description

technical field [0001] The invention belongs to the technical field of building environment and energy system automatic control, and in particular relates to an air source heat pump dynamic energy efficiency optimization control method under the condition of outdoor temperature disturbance. Background technique [0002] Modern residential buildings, commercial offices and other types of residential buildings have greatly increased their demand for environmental thermal comfort. However, as the public pays more and more attention to environmental issues, the use of renewable energy to power buildings has attracted widespread attention. Air source heat pump is an energy recovery system, which uses some electricity to transfer low-temperature heat from the external ground or air to the heating circuit of the building. It is widely used in the heating (cooling) system of buildings due to its advantages such as high energy conversion efficiency, clean and renewable, and low instal...

AI Technical Summary

Problems solved by technology

With the development of modeling technology and computing resources, model predictive control (MPC), as an advanced optimal control method, can comprehensively consider various constraints and conditions in the actual operation of the system if a system model with high precision can be used. Disturbance can better realize the tracking of the set point, but the pure tracking MPC cannot guarantee the economy of the system operation

Images