Air conditioner load regulation and control method and device based on switch control

Abstract

The invention relates to the technical field of demand response analysis, and particularly provides an air conditioner load regulation and control method and device based on switch control, and the method comprises the steps: solving an air conditioner load regulation and control model corresponding to an air conditioner cluster, and obtaining the start-stop state of an air conditioner in each response time period; the air conditioner cluster is regulated and controlled based on the starting and stopping states of the air conditioners in all the response time periods; wherein the air conditioner load regulation and control model comprises a target function with the minimum total load of the air conditioner cluster as a target. According to the technical scheme, the load regulation capacity of the power grid is achieved through the air conditioner load regulation and control strategy based on switch control, the peak power supply pressure is relieved, and the economical efficiency and stability of power grid operation are improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of demand response analysis, and particularly relates to an air conditioner load regulation method and device based on switch control. BACKGROUND

[0002] One of the key features of power system is that demand and supply must be balanced in real time, and power companies are responsible for supplying enough power generation to meet the growing peak demand. However, it is a huge waste to make up for short-term peak demand by increasing power generation, and demand response can change the power usage habits of users based on electricity prices or incentive signals under the condition of ensuring the power efficiency of users, which can realize peak shaving of power grid load and improve the utilization rate of power grid equipment, and demand response can provide power system backup capacity from the demand side, compared with the backup capacity from the power generation side, the backup capacity from the demand side not only does not need operating cost when not in use, but also can realize energy saving and emission reduction of power system.

[0003] As the main contributor of peak demand and the inherent heat storage characteristics, air conditioners have attracted more and more attention in tapping the demand response potential of residential users. In particular, the thermal model of the house is the necessary condition for predicting air conditioner power consumption and power reduction, and is also the basis for implementing the optimal strategy of air conditioner. However, there are key problems such as insufficient cluster coordination, low regulation efficiency and difficulty in balancing user comfort and grid demand in the existing air conditioner load regulation technology, therefore, an air conditioner load regulation method considering user comfort and grid demand is urgently needed. SUMMARY

[0004] In order to overcome the above defects, the present application provides an air conditioner load regulation method and device based on switch control.

[0005] In a first aspect, an air conditioner load regulation method based on switch control is provided, and the air conditioner load regulation method based on switch control comprises:

[0006] Solving an air conditioner load regulation model corresponding to an air conditioner cluster to obtain the start-stop state of the air conditioner in each response period;

[0007] Regulating the air conditioner cluster based on the start-stop state of the air conditioner in each response period;

[0008] The air conditioner load regulation model comprises a target function taking the minimum total load of the air conditioner cluster as the target.

[0009] Preferably, the target function is as follows:

[0010]

[0011] In the above formula, F is the value of the target function, T lP is the total number of time periods, P t agg is the total load of the air conditioner cluster in time period t.

[0012] Further, the total load of the air conditioner cluster in time period t is as follows:

[0013]

[0014] In the above formula, P i AC,rated is the rated cooling capacity of the fixed-frequency air conditioner i, N is the total number of fixed-frequency air conditioners in the air conditioner cluster, T i on is the on-state time of the fixed-frequency air conditioner i, T i off is the off-state time of the fixed-frequency air conditioner i.

[0015] Further, the on-state time of the fixed-frequency air conditioner i and the off-state time of the fixed-frequency air conditioner are as follows:

[0016]

[0017] In the above formula, R is the thermal resistance, C is the heat capacity, Q AC,rated is the rated heat production of the fixed-frequency air conditioner, T max is the maximum temperature limit, T min is the minimum temperature limit, T out is the outdoor temperature.

[0018] Further, the air conditioner load control model includes: start-stop state constraint, indoor temperature constraint, rated cooling capacity constraint.

[0019] Further, the start-stop state constraint is as follows:

[0020]

[0021] In the above formula, u t is the start-stop state of the fixed-frequency air conditioner in time period t, T t in is the indoor temperature of the fixed-frequency air conditioner in time period t, T min is the minimum temperature limit, T max is the maximum temperature limit, u t-1 is the start-stop state of the fixed-frequency air conditioner i in time period t-1.

[0022] Further, the minimum temperature limit and the maximum temperature limit are as follows:

[0023]

[0024] In the above formula, T set is the set temperature of the fixed-frequency air conditioner, Tdelta The temperature dead zone width of the fixed-frequency air conditioner.

[0025] Further, the indoor temperature constraint and the rated cooling capacity constraint are as follows:

[0026]

[0027] In the above formula, The indoor temperature of the fixed-frequency air conditioner i at the t period.

[0028] In a second aspect, a switch control-based air conditioner load regulation device is provided, which comprises:

[0029] An analysis module for solving an air conditioner load regulation model corresponding to an air conditioner cluster to obtain the start-stop state of each response period air conditioner;

[0030] A regulation module for regulating the air conditioner cluster based on the start-stop state of each response period air conditioner;

[0031] The air conditioner load regulation model includes an objective function with the minimum total load of the air conditioner cluster as the target.

[0032] Preferably, the objective function is as follows:

[0033]

[0034] In the above formula, F is the objective function value, T l The total number of response periods, P t agg The total load of the air conditioner cluster at the t period.

[0035] Further, the total load of the air conditioner cluster at the t period is as follows:

[0036]

[0037] In the above formula, P i AC,rated The rated cooling capacity of the fixed-frequency air conditioner i, N is the total number of fixed-frequency air conditioners in the air conditioner cluster, T i on The on state time of the fixed-frequency air conditioner i, T i off The off state time of the fixed-frequency air conditioner i.

[0038] Further, the on state time of the fixed-frequency air conditioner i and the off state time of the fixed-frequency air conditioner are as follows:

[0039]

[0040] In the above formula, R is the thermal resistance, C is the heat capacity, and QAC,rated T is a rated heat output of the inverter air conditioner, max T is a temperature maximum limit value, min T is a temperature minimum limit value, out T is an outdoor temperature.

[0041] Further, the air conditioner load regulation model comprises: a start-stop state constraint, an indoor temperature constraint, and a rated refrigerating capacity constraint.

[0042] Further, the start-stop state constraint is as follows:

[0043]

[0044] In the above formula, u t T is a start-stop state of the inverter air conditioner in the t period, t in T is an indoor temperature of the inverter air conditioner i in the t period, min T is a temperature minimum limit value, max T is a temperature maximum limit value, u t-1 T is a start-stop state of the inverter air conditioner i in the t-1 period.

[0045] Further, the temperature minimum limit value and the temperature maximum limit value are as follows:

[0046]

[0047] In the above formula, T set T is a set temperature of the inverter air conditioner, delta T is a temperature dead zone width of the inverter air conditioner.

[0048] Further, the indoor temperature constraint and the rated refrigerating capacity constraint are as follows:

[0049]

[0050] In the above formula, T is an indoor temperature of the inverter air conditioner i in the t period.

[0051] In a third aspect, a computer device is provided, comprising: one or more processors;

[0052] The processor is configured to execute one or more programs.

[0053] When the one or more programs are executed by the one or more processors, the air conditioner load regulation method based on switch control is implemented.

[0054] In a fourth aspect, a computer readable storage medium is provided, having a computer program stored thereon, and the computer program is executed to implement the air conditioner load regulation method based on switch control.

[0055] The one or more technical solutions of the present application have at least one or more of the following beneficial effects:

[0056] The present application provides a switch control-based air conditioner load regulation method and device, comprising: solving an air conditioner load regulation model corresponding to an air conditioner cluster to obtain the start-stop state of each response period air conditioner; regulating the air conditioner cluster based on the start-stop state of each response period air conditioner; wherein the air conditioner load regulation model includes a target function with the minimum total load of the air conditioner cluster as the target. The technical solution provided by the present application can significantly reduce the total power of the air conditioner load group in the peak period by strategically controlling the start-stop state of the air conditioner in the peak power consumption period, effectively alleviate the overload pressure of the distribution network line and transformer, delay the investment in upgrading of the power grid equipment, and improve the safety and stability of the power grid operation. Ultimately, the total power consumption of the air conditioner load cluster is minimized efficiently and reliably under the premise of ensuring user comfort, providing strong flexible regulation support for the power grid. BRIEF DESCRIPTION OF DRAWINGS

[0057] Figure 1 is the main step flowchart of the switch control-based air conditioner load regulation method of the embodiment of the present application. DETAILED DESCRIPTION

[0058] The specific embodiments of the present application will be further described in detail below with reference to the accompanying drawings.

[0059] To make the purpose, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0060] As disclosed in the background, a key feature of the power system is that demand and supply must be balanced in real time, and the power company is responsible for supplying sufficient power generation to meet the growing peak demand. However, it is a huge waste to make up for short-term peak demand by increasing power generation. Demand response can change the power usage habits of users based on electricity prices or incentive signals under the condition of ensuring the power utility of users, which can achieve peak shaving of the power grid load and improve the utilization rate of power grid equipment. Moreover, demand response can provide power system backup capacity on the demand side, which not only does not require operating costs when not in use, but also can achieve energy saving and emission reduction of the power system compared with the backup capacity on the power generation side.

[0061] Air conditioners, as the main contributor to peak demand and inherent heat storage characteristics, have attracted increasing attention in tapping the demand response potential of residential users. In particular, the thermal model of the house is a necessary condition for predicting air conditioner power consumption and power reduction, and is the basis for implementing optimal air conditioner strategies. However, the existing air conditioner load regulation technology has the key problems of insufficient cluster coordination, low regulation efficiency and difficulty in balancing user comfort and grid demand, therefore, an air conditioner load regulation method considering user comfort and grid demand is urgently needed.

[0062] In order to improve the above problems, the application provides an air conditioner load regulation method and device based on switch control, comprising: solving an air conditioner load regulation model corresponding to an air conditioner cluster to obtain the start-stop state of the air conditioner in each response period; regulating the air conditioner cluster based on the start-stop state of the air conditioner in each response period; wherein the air conditioner load regulation model includes an objective function with the minimum total load of the air conditioner cluster as the target. The technical scheme provided by the application can significantly reduce the aggregated total power of the air conditioner load group during the peak period by strategically controlling the start-stop state of the air conditioner during the peak period, effectively alleviating the overload pressure of the distribution network line and transformer, delaying the investment in upgrading of the power grid equipment, and improving the safety and stability of the power grid operation. Ultimately, the total power consumption of the air conditioner load cluster is minimized efficiently and reliably under the premise of ensuring user comfort, providing strong flexible adjustment support for the power grid.

[0063] The above scheme will be described in detail below.

[0064] Embodiment 1

[0065] Referring to the accompanying Figure 1 , Figure 1 is the main step flowchart of the air conditioner load regulation method based on switch control of an embodiment of the application. As Figure 1 shown, the air conditioner load regulation method based on switch control in the embodiment of the application mainly includes the following steps:

[0066] Step S101: solving an air conditioner load regulation model corresponding to an air conditioner cluster to obtain the start-stop state of the air conditioner in each response period;

[0067] Step S102: regulating the air conditioner cluster based on the start-stop state of the air conditioner in each response period;

[0068] Wherein, the air conditioner load regulation model includes an objective function with the minimum total load of the air conditioner cluster as the target.

[0069] In this embodiment, the bisection method can be used to solve the air conditioner load regulation model corresponding to the air conditioner cluster, or the particle swarm algorithm can be used to solve the air conditioner load regulation model corresponding to the air conditioner cluster.

[0070] In this embodiment, the objective function is as follows:

[0071]

[0072] In the above formula, F is the objective function value, T l is the total number of response periods, P t agg is the total load of the air conditioner cluster in the t period.

[0073] In one embodiment, the total load of the air conditioner cluster in the t period is as follows:

[0074]

[0075] In the above formula, P i AC,rated is the rated cooling capacity of the fixed-frequency air conditioner i, N is the total number of fixed-frequency air conditioners in the air conditioner cluster, T i on is the on state time of the fixed-frequency air conditioner i, T i off is the off state time of the fixed-frequency air conditioner i.

[0076] In one embodiment, the on state time of the fixed-frequency air conditioner i and the off state time of the fixed-frequency air conditioner are as follows:

[0077]

[0078] In the above formula, R is the thermal resistance, C is the heat capacity, Q AC,rated is the rated heat production of the fixed-frequency air conditioner, T max is the maximum temperature limit, T min is the minimum temperature limit, T out is the outdoor temperature.

[0079] In one embodiment, the air conditioner load regulation model includes: start-stop state constraint, indoor temperature constraint, rated cooling capacity constraint.

[0080] In one embodiment, the start-stop state constraint is as follows:

[0081]

[0082] In the above formula, u t is the start-stop state of the fixed-frequency air conditioner in the t period, T t in is the indoor temperature of the fixed-frequency air conditioner in the t period, T min is the minimum temperature limit, T max is the maximum temperature limit, u t-1 is the start-stop state of the fixed-frequency air conditioner i in the t-1 period.

[0083] In one embodiment, the minimum temperature limit and the maximum temperature limit are as follows:

[0084]

[0085] In the above formula, T set is the set temperature of the fixed-frequency air conditioner, T delta is the temperature dead zone width of the fixed-frequency air conditioner.

[0086] In one embodiment, the indoor temperature constraint and the rated cooling capacity constraint are as follows:

[0087]

[0088] In the above formula, T is the indoor temperature of the fixed-frequency air conditioner i at the t period.

[0089] Embodiment 2

[0090] Based on the same inventive concept, the application further provides a switch control-based air conditioner load regulation device, which comprises:

[0091] an analysis module configured to solve an air conditioner load regulation model corresponding to an air conditioner cluster to obtain the start-stop state of each response period air conditioner;

[0092] a regulation module configured to regulate the air conditioner cluster based on the start-stop state of each response period air conditioner;

[0093] wherein the air conditioner load regulation model comprises an objective function with the minimum total load of the air conditioner cluster as the target.

[0094] Preferably, the objective function is as follows:

[0095]

[0096] In the above formula, F is the objective function value, T l is the total number of response periods, P t agg is the total load of the air conditioner cluster at the t period.

[0097] Further, the total load of the air conditioner cluster at the t period is as follows:

[0098]

[0099] In the above formula, P i AC,rated is the rated cooling capacity of the fixed-frequency air conditioner i, N is the total number of fixed-frequency air conditioners in the air conditioner cluster, T i on is the on state time of the fixed-frequency air conditioner i, T ioff is the on state time of the fixed frequency air conditioner i.

[0100] Further, the on state time of the fixed frequency air conditioner i and the off state time of the fixed frequency air conditioner are as follows:

[0101]

[0102] In the above formula, R is thermal resistance, C is heat capacity, Q AC,rated is the rated heat production of the fixed frequency air conditioner, T max is the maximum temperature limit, T min is the minimum temperature limit, T out is the outdoor temperature.

[0103] Further, the air conditioner load regulation model comprises: start-stop state constraints, indoor temperature constraints, and rated refrigeration capacity constraints.

[0104] Further, the start-stop state constraints are as follows:

[0105]

[0106] In the above formula, u t is the start-stop state of the fixed frequency air conditioner i at t, T t in is the indoor temperature of the fixed frequency air conditioner i at t, T min is the minimum temperature limit, T max is the maximum temperature limit, u t-1 is the start-stop state of the fixed frequency air conditioner i at t-1.

[0107] Further, the minimum temperature limit and the maximum temperature limit are as follows:

[0108]

[0109] In the above formula, T set is the set temperature of the fixed frequency air conditioner, T delta is the temperature dead zone width of the fixed frequency air conditioner.

[0110] Further, the indoor temperature constraints and the rated refrigeration capacity constraints are as follows:

[0111]

[0112] In the above formula, is the indoor temperature of the fixed frequency air conditioner i at t.

[0113] Embodiment 3

[0114] Based on the same inventive concept, the present application further provides a computer device, which comprises a processor and a memory, the memory is used to store a computer program, the computer program comprises program instructions, and the processor is used to execute the program instructions stored in the computer storage medium. The processor can be a central processing unit (CPU), and can also be other general-purpose processors, digital signal processors (DSP), application specific integrated circuits (ASIC), field-programmable gate arrays (FPGA) or other programmable logic devices, discrete gates or transistor logic devices, discrete hardware components, etc., which are the computing core and control core of the terminal, and are suitable for implementing one or more instructions, and are specifically suitable for loading and executing one or more instructions in the computer storage medium to implement a corresponding method flow or a corresponding function, so as to implement the steps of the air conditioner load regulation method based on switch control in the above embodiment.

[0115] Embodiment 4

[0116] Based on the same inventive concept, the present application further provides a storage medium, specifically a computer readable storage medium (Memory), which is a memory device in the computer device, and is used to store programs and data. It can be understood that the computer readable storage medium herein can include the built-in storage medium in the computer device, and of course can also include the expansion storage medium supported by the computer device. The computer readable storage medium provides a storage space, and the storage space stores the operating system of the terminal. Moreover, one or more instructions suitable for being loaded and executed by the processor are also stored in the storage space, and the instructions can be one or more computer programs (including program codes). It should be noted that the computer readable storage medium herein can be a high-speed RAM memory, or a non-volatile memory such as at least one disk memory. One or more instructions stored in the computer readable storage medium can be loaded and executed by the processor to implement the steps of the air conditioner load regulation method based on switch control in the above embodiment.

[0117] Those skilled in the art will appreciate that embodiments of the application can be devised for a method, a system, or a computer program product. Accordingly, the present application can be embodied in the form of an entirely hardware embodiment, an entirely software embodiment, or an embodiment combining software and hardware aspects. Furthermore, the present application can take the form of a computer program product on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROMs, optical storage devices, etc.) embodying computer readable program code.

[0118] The present application is described in reference to the flowchart and / or block diagrams of the method, apparatus (system) and computer program product according to embodiments of the application. It will be understood that each block of the flowchart and / or block diagrams, and combinations of blocks in the flowchart and / or block diagrams, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general purpose computer, special purpose computer, embedded processing device or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart and / or block diagram block or blocks. Figure 1 one or more functions specified in the flowchart and / or block diagram block or blocks. Figure 1 one or more functions specified in the flowchart and / or block diagram block or blocks.

[0119] These computer program instructions can also be stored in a computer- readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instructions which implement the function specified in the flowchart and / or block diagram block or blocks. Figure 1 one or more functions specified in the flowchart and / or block diagram block or blocks. Figure 1 one or more functions specified in the flowchart and / or block diagram block or blocks.

[0120] These computer program instructions can also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer-implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart and / or block diagram block or blocks. Figure 1 one or more functions specified in the flowchart and / or block diagram block or blocks. Figure 1 one or more functions specified in the flowchart and / or block diagram block or blocks.

[0121] Finally, it should be noted that the above-mentioned embodiments are merely intended for describing the technical solutions of the present application, but not for limiting it. Although the present application is described in detail with reference to the above embodiments, those skilled in the field should understand that the specific embodiments of the present application can be modified or replaced equivalently without departing from the spirit and scope of the present application, and any modification or equivalent replacement without departing from the spirit and scope of the present application should be covered in the protection scope of the claims of the present application.

Claims

1. A method for regulating air conditioning load based on switch control, characterized in that: The method comprises: Solve the air conditioning load control model corresponding to the air conditioning cluster and obtain the start and stop status of the air conditioner in each response period; Regulating the air conditioning cluster based on the start and stop status of the air conditioner in each response time period; The air-conditioning load control model includes an objective function with the goal of minimizing the total load of the air-conditioning cluster.

2. The method according to claim 1, wherein The objective function is as follows: In the above formula, F is the objective function value, T l is the total number of response periods, P t agg is the total load of the air conditioning cluster during period t.

3. The method according to claim 2, wherein The total load of the air conditioning cluster during period t is as follows: In the above formula, P i AC,rated is the rated cooling capacity of fixed-frequency air conditioner i, N is the total number of fixed-frequency air conditioners in the air conditioner cluster, T i on is the on-state time of fixed-frequency air conditioner i, T i off is the off time of fixed-frequency air conditioner i.

4. The method according to claim 3, wherein The on-state time and off-state time of the fixed-frequency air conditioner i are as follows: In the above formula, R is thermal resistance, C is heat capacity, Q is AC,rated is the rated heat output of the fixed-frequency air conditioner, T max is the maximum temperature limit, T min is the minimum temperature limit, T out is the outdoor temperature.

5. The method according to claim 3, wherein The air conditioning load control model includes: start-stop state constraints, indoor temperature constraints, and rated cooling capacity constraints.

6. The method according to claim 5, wherein The start-stop state constraints are as follows: In the above formula, u t is the start and stop status of the fixed-frequency air conditioner during period t, T t in is the indoor temperature of the fixed-frequency air conditioner during period t, T min is the minimum temperature limit, T max is the maximum temperature limit, u t-1 is the start and stop status of the fixed-frequency air conditioner i in period t-1.

7. The method according to claim 6, wherein The minimum and maximum temperature limits are as follows: In the above formula, T set is the set temperature of the fixed frequency air conditioner, T delta It is the temperature dead zone width of fixed-frequency air conditioner.

8. The method according to claim 7, wherein The indoor temperature constraints and rated cooling capacity constraints are as follows: In the above formula, is the indoor temperature of the fixed-frequency air conditioner i during period t.

9. An air conditioning load control device based on switch control, characterized in that: The device comprises: The analysis module is used to solve the air conditioning load control model corresponding to the air conditioning cluster and obtain the start and stop status of the air conditioner in each response period; A control module, configured to control the air conditioning cluster based on the start and stop status of the air conditioners in each response time period; The air-conditioning load control model includes an objective function with the goal of minimizing the total load of the air-conditioning cluster.

10. The device according to claim 9, wherein The objective function is as follows: In the above formula, F is the objective function value, T l is the total number of response periods, P t agg is the total load of the air conditioning cluster during period t.

11. The device according to claim 10, wherein The total load of the air conditioning cluster during period t is as follows: In the above formula, P i AC,rated is the rated cooling capacity of fixed-frequency air conditioner i, N is the total number of fixed-frequency air conditioners in the air conditioner cluster, T i on is the on-state time of fixed-frequency air conditioner i, T i off is the off time of fixed-frequency air conditioner i.

12. The device according to claim 11, wherein The on-state time and off-state time of the fixed-frequency air conditioner i are as follows: In the above formula, R is thermal resistance, C is heat capacity, Q is AC,rated is the rated heat output of the fixed-frequency air conditioner, T max is the maximum temperature limit, T min is the minimum temperature limit, T out is the outdoor temperature.

13. The device according to claim 11, wherein The air conditioning load control model includes: start-stop state constraints, indoor temperature constraints, and rated cooling capacity constraints.

14. The device according to claim 13, wherein The start-stop state constraints are as follows: In the above formula, u t is the start and stop status of the fixed-frequency air conditioner during period t, T t in is the indoor temperature of the fixed-frequency air conditioner during period t, T min is the minimum temperature limit, T max is the maximum temperature limit, u t-1 is the start and stop status of the fixed-frequency air conditioner i in period t-1.

15. The device according to claim 14, wherein The minimum and maximum temperature limits are as follows: In the above formula, T set is the set temperature of the fixed frequency air conditioner, T delta It is the temperature dead zone width of fixed-frequency air conditioner.

16. The device according to claim 15, characterized in that The indoor temperature constraints and rated cooling capacity constraints are as follows: In the above formula, is the indoor temperature of the fixed-frequency air conditioner i during period t.

17. A computer device, characterized in that: include: one or more processors; The processor is configured to execute one or more programs; When the one or more programs are executed by the one or more processors, the air conditioning load regulation method based on switch control according to any one of claims 1 to 8 is implemented.

18. A computer-readable storage medium, characterized in that A computer program is stored thereon, and when the computer program is executed, the air conditioning load regulation method based on switch control as described in any one of claims 1 to 8 is implemented.

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