Air source heat pump unit group control method, electronic device and storage medium

Abstract

The present application relates to the field of air source heat pump, and particularly relates to an air source heat pump unit group control method, electronic equipment and storage medium, the group control method comprising: detecting the actual ambient temperature and the air temperature around each unit in real time; detecting the running state of each unit, calculating the decay rate of the air temperature around each unit; calculating the absolute value of the difference between the average value of the ambient temperature and the average value of the air temperature around each unit; calculating the first sorting result O1(k), the second sorting result O2(k) and the third sorting result O3(k); S5: calculating the comprehensive weight value O(k), and obtaining the final sorting result according to the O(k) from small to large; S6: if starting is needed, starting the unit in the shutdown state at the current time and with the smallest O(k) sorting; if stopping is needed, stopping the unit in the starting state at the current time and with the largest O(k) sorting. The present application formulates the start-stop sequence of the unit according to the comprehensive weight value O(k), can reduce the influence of cold island effect on the performance of the air source heat pump system, and improve the system energy efficiency.

Description

Technical Field

[0001] This invention relates to the field of air source heat pumps, and particularly to a group control method for air source heat pump units, electronic equipment, and storage medium. Background Technology

[0002] In large-scale air source heat pump heating systems, the outdoor units are centrally located. During winter heating operation, the outdoor units absorb heat, causing the surrounding air temperature to drop and creating a cold island effect. This lowers the intake air temperature and increases the likelihood of frosting, leading to a decrease in the unit's heating performance. The more units are turned on and the more concentrated the operation is, the more severe the cold island effect becomes. Therefore, optimizing the start-up and shutdown sequence of air source heat pump units is crucial for improving the energy efficiency of air source heat pump heating systems. Summary of the Invention

[0003] The purpose of this invention is to overcome the shortcomings of the existing technology and provide a group control method, electronic equipment, and storage medium for air source heat pump units. Based on the temperature difference between the air surrounding the unit and the ambient temperature during the operation of the air source heat pump unit, the temperature decay rate of the air surrounding the unit, and the temperature difference between the air surrounding the unit and the ambient temperature during shutdown, the start-up and shutdown sequence of the units is determined by the weighting relationship of the three factors on the cold island effect, thereby reducing the impact of the cold island effect on the performance of the air source heat pump system and improving the system energy efficiency.

[0004] In a first aspect, the present invention provides a method for group control of air source heat pump units, comprising the following steps:

[0005] S1: Centrally located air source heat pump units m Taiwan, according to 1~ m Number each unit;

[0006] S2: Real-time detection of actual ambient temperature; the ambient temperature at time τ is... The time interval for each detection is Δτ;

[0007] Real-time monitoring of the air temperature around each unit, at time τ. k The air temperature around the unit is (k∈[1,m]), with a detection time interval of Δτ;

[0008] Monitor the operating status of each unit;

[0009] If the unit is in the start-up state, calculate the average ambient temperature during the period from the last unit shutdown time τ1 to the start-up time τ2. Average air temperature around the unit The average ambient temperature during the period from the start time τ2 of the computer group to the current time τ3. Average air temperature around the unit And calculate the attenuation rate of the air temperature around the unit during the time period τ2~τ3. ;

[0010] If the unit is in a shut-down state, calculate the average ambient temperature for the period from the unit's start-up time τ1 to its shutdown time τ2. Average air temperature around the unit The average ambient temperature during the period from the time the computer group stopped operating (τ2) to the current time (τ3). Average air temperature around the unit And calculate the decay rate of the air temperature around the unit during the time period τ1~τ2. ;

[0011] S3: Calculate the average ambient temperature during the continuous operation of each unit. Average ambient air temperature of each unit The absolute value of the difference between them: ;

[0012] Calculate the average ambient temperature during the continuous shutdown period of each unit. Average ambient air temperature of each unit The absolute value of the difference between them: ;

[0013] S4: Apply the following to all units Sort the data from smallest to largest to obtain the first sorting result O1(k). Then, sort all the units according to... Sort the data from smallest to largest to obtain the second sorting result O2(k). Then, apply this sorting method to all units according to... Sort the data from smallest to largest to obtain the third sorting result O3(k);

[0014] S5: Calculate the comprehensive weight value O(k) based on the weight relationship of the first sorting result O1(k), the second sorting result O2(k), and the third sorting result O3(k), and sort them from smallest to largest to obtain the final sorting result;

[0015] S6: Determine the number of units that need to be turned on, turned off, or maintained based on changes in the terminal load. If the unit needs to be turned on, turn on the unit that is currently in a stopped state and has the smallest O(k) ranking. If the unit needs to be turned off, turn off the unit that is currently in a started state and has the largest O(k) ranking.

[0016] Preferably, in S2, a first temperature sensor is installed at a location far from the air source heat pump unit to detect the actual ambient temperature in real time.

[0017] Preferably, in S2, a second temperature sensor is installed at the air-side heat exchanger of each air source heat pump unit to detect the air temperature around each unit in real time.

[0018] Preferably, in S2, if the unit is in the start-up state, the decay rate of the air temperature around the unit during the time period τ2~τ3 is calculated. :

[0019] ,

[0020] ,

[0021] .

[0022] Preferably, in S2, if the unit is in a shut-down state, the decay rate of the air temperature around the unit during the time period τ1~τ2 is calculated. :

[0023] ,

[0024] ,

[0025] .

[0026] Preferably, in S5, the comprehensive weight value O(k) is calculated based on the weight relationship between the first sorting result O1(k), the second sorting result O2(k), and the third sorting result O3(k), where O(k) = α×O1(k) + β×O2(k) + γO3(k), and α, β, and γ are weight coefficients, and α + β + γ = 1.

[0027] In a second aspect, the present invention provides an air source heat pump unit controlled by any of the group control methods described herein.

[0028] In a third aspect, the present invention provides an electronic device including a processor, a network interface, and a memory, wherein the processor, the network interface, and the memory are interconnected, wherein the memory is used to store a computer program, the computer program including program instructions, and the processor is configured to invoke the program instructions to execute any of the group control methods described herein.

[0029] In a fourth aspect, the present invention provides a computer-readable storage medium including a stored computer program, wherein, when the computer program is executed, it controls the device on which the computer-readable storage medium is located to perform any of the group control methods described above.

[0030] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0031] This invention is based on the temperature difference between the air surrounding the unit and the ambient temperature during operation, the temperature decay rate of the air surrounding the unit, and the temperature difference between the air surrounding the unit and the ambient temperature during shutdown. By determining the weighted relationship of these three factors on the impact of the cold island effect, the start-up and shutdown sequence of the unit is determined, thereby reducing the impact of the cold island effect on the performance of the air source heat pump system and improving the system energy efficiency. Attached Figure Description

[0032] Figure 1 This is a schematic flowchart of the air source heat pump unit group control method described in this invention. Detailed Implementation

[0033] The present invention will now be described in further detail with reference to specific embodiments. However, this should not be construed as limiting the scope of the present invention to the following embodiments; all technologies implemented based on the content of the present invention fall within the scope of the present invention.

[0034] Unless otherwise specified, the terms "upper," "lower," "left," "right," "center," "inner," and "outer," etc., used in the description of specific embodiments of the present invention to indicate orientation or positional relationships, are based on the orientation or positional relationships shown in the accompanying drawings, or the orientation or positional relationship in which the product / equipment / device is usually placed during use. These terms are merely for the purpose of facilitating the description of the present invention or simplifying the description in specific embodiments, and for enabling those skilled in the art to quickly understand the solution, and do not indicate or imply that a particular device / component / element must have a specific orientation, or be constructed and operated in a specific positional relationship. Therefore, they should not be construed as limitations on the present invention.

[0035] Furthermore, the use of terms such as "horizontal," "vertical," "suspended," "parallel," and "coaxial" does not imply that the corresponding device / component / element must be absolutely horizontal, vertical, suspended, parallel, or coaxial. Slight tilt or deviation is permissible, as long as it does not affect the normal function of the relevant component. For example, "horizontal" simply means that its direction is more horizontal relative to "vertical," not that the structure must be perfectly horizontal; a slight tilt is acceptable. "Coaxial" means that two components are arranged as coaxially as possible, allowing them to move coaxially or approximately coaxially when their relative positions change. Alternatively, it can be simplified to mean that the corresponding device / component / element, when arranged in "horizontal," "vertical," "suspended," "parallel," or "coaxial" directions, can have an error / deviation of ±10% relative to the corresponding direction, more preferably within ±8%, more preferably within ±6%, more preferably within ±5%, and more preferably within ±4%. For example, the deviation in the "coaxial" direction is controlled within 0.2-1mm, preferably within 0.2-0.5mm. As long as the corresponding device / component / element is within the error / deviation range, it can still achieve its function in the solution of the present invention.

[0036] Furthermore, the use of terms such as "first," "second," and "third" in terminology is merely for distinguishing descriptions of identical or similar components and should not be interpreted as emphasizing or implying the relative importance of a particular component.

[0037] Furthermore, in the description of the embodiments of the present invention, "several", "more than", and "a number of" represent at least two. The number can be any number, such as two, three, four, five, six, seven, eight, or nine, and can even exceed nine.

[0038] Furthermore, in the description of the technical solution of this invention, unless otherwise explicitly specified / limited / restricted, the terms "set up," "install," "connect," "link," "provided with," "laid out," and "arranged" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to connection methods commonly used in the art, such as welding, riveting, bolting, and threaded connections. Such connections can be mechanical, electrical, or communication connections; they can be direct connections or indirect connections through an intermediate medium; and they can refer to the internal communication between two components.

[0039] Example 1

[0040] like Figure 1 As shown, a group control method for air source heat pump units includes the following steps:

[0041] S1: Centrally located air source heat pump units m Taiwan, according to 1~m Each unit was assigned a number.

[0042] S2: Install a first temperature sensor at a location far from the air-source heat pump unit to monitor the actual ambient temperature in real time. The ambient temperature at time τ is... The time interval for each detection is Δτ;

[0043] A second temperature sensor is installed at the air-side heat exchanger of each air source heat pump unit to monitor the ambient air temperature around each unit in real time, at time τ. k The air temperature around the unit is (k∈[1, m]), with a detection time interval of Δτ;

[0044] Monitor the operating status of each unit;

[0045] If the unit is in the start-up state, calculate the average ambient temperature during the period from the last unit shutdown time τ1 to the start-up time τ2. Average air temperature around the unit The average ambient temperature during the period from the start time τ2 of the computer group to the current time τ3. Average air temperature around the unit And calculate the attenuation rate of the air temperature around the unit during the time period τ2~τ3. ;

[0046] ,

[0047] ,

[0048] ;

[0049] If the unit is in a shut-down state, calculate the average ambient temperature for the period from the unit's start-up time τ1 to its shutdown time τ2. Average air temperature around the unit The average ambient temperature during the period from the time the computer group stopped operating (τ2) to the current time (τ3). Average air temperature around the unit And calculate the decay rate of the air temperature around the unit during the time period τ1~τ2. ;

[0050] ,

[0051] ,

[0052] .

[0053] S3: Calculate the average ambient temperature during the continuous operation of each unit. Average ambient air temperature of each unit The absolute value of the difference between them: ;

[0054] Calculate the average ambient temperature during the continuous shutdown period of each unit. Average ambient air temperature of each unit The absolute value of the difference between them: ;

[0055] S4: Apply the following to all units Sort the data from smallest to largest to obtain the first sorting result O1(k). Then, sort all the units according to... Sort the data from smallest to largest to obtain the second sorting result O2(k). Then, apply this sorting method to all units according to... Sort the data from smallest to largest to obtain the third sorting result O3(k);

[0056] S5: Calculate the comprehensive weight value O(k) based on the weight relationship between the first sorting result O1(k), the second sorting result O2(k), and the third sorting result O3(k), O(k) = α×O1(k) + β×O2(k) + γO3(k), where α, β, and γ are weight coefficients, and α + β + γ = 1. Sort the results from smallest to largest according to O(k) to obtain the final sorting result.

[0057] S6: Determine the number of units that need to be turned on, turned off, or maintained based on changes in the terminal load. If the unit needs to be turned on, turn on the unit that is currently in a stopped state and has the smallest O(k) ranking. If the unit needs to be turned off, turn off the unit that is currently in a started state and has the largest O(k) ranking.

[0058] This invention uses the average ambient temperature of the unit during operation and shutdown as the calculation value, effectively avoiding control misalignment caused by accidental temperature detection. This invention considers the attenuation rate as an important factor in determining whether the cold island effect intensifies during unit operation, improving control accuracy. This invention considers the weighted relationship of the three factors to obtain a comprehensive judgment basis, improving the reliability of system control.

[0059] This invention is based on the temperature difference between the air surrounding the unit and the ambient temperature during operation, the temperature decay rate of the air surrounding the unit, and the temperature difference between the air surrounding the unit and the ambient temperature during shutdown. By determining the weighted relationship of these three factors on the impact of the cold island effect, the start-up and shutdown sequence of the unit is determined, thereby reducing the impact of the cold island effect on the performance of the air source heat pump system and improving the system energy efficiency.

[0060] Example 2

[0061] An air source heat pump unit is controlled using the group control method described in Example 1.

[0062] Example 3

[0063] An electronic device includes a processor, a network interface, and a memory, wherein the processor, the network interface, and the memory are interconnected, wherein the memory is used to store a computer program, the computer program including program instructions, and the processor is configured to invoke the program instructions to execute the group control method as described in Embodiment 1.

[0064] Example 4

[0065] A computer-readable storage medium includes a stored computer program, wherein, when the computer program is executed, it controls the device on which the computer-readable storage medium is located to perform the group control method as described in Example 1.

[0066] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A group control method of an air source heat pump unit, characterized by, Includes the following steps: S1: Centrally located air source heat pump units m Taiwan, according to 1~ m Number each unit; S2: Real-time detection of actual ambient temperature; the ambient temperature at time τ is... The time interval for each detection is Δτ; Real-time monitoring of the air temperature around each unit, at time τ. k The air temperature around the unit is (k∈[1,m]), with a detection time interval of Δτ; Monitor the operating status of each unit; If the unit is in the start-up state, calculate the average ambient temperature during the period from the last unit shutdown time τ1 to the start-up time τ2. Average air temperature around the unit The average ambient temperature during the period from the start time τ2 of the computer group to the current time τ3. Average air temperature around the unit And calculate the attenuation rate of the air temperature around the unit during the time period τ2~τ3. ; If the unit is in a shut-down state, calculate the average ambient temperature for the period from the unit's start-up time τ1 to its shutdown time τ2. Average air temperature around the unit The average ambient temperature during the period from the time the computer group stopped operating (τ2) to the current time (τ3). Average air temperature around the unit And calculate the decay rate of the air temperature around the unit during the time period τ1~τ2. ; S3: Calculate the average ambient temperature during the continuous operation of each unit. Average ambient air temperature of each unit The absolute value of the difference between them: ; Calculate the average ambient temperature during the continuous shutdown period of each unit. Average ambient air temperature of each unit The absolute value of the difference between them: ; S4: Apply the following to all units Sort the data from smallest to largest to obtain the first sorting result O1(k). Then, sort all the units according to... Sort the data from smallest to largest to obtain the second sorting result O2(k). Then, apply this sorting method to all units according to... Sort the data from smallest to largest to obtain the third sorting result O3(k); S5: Calculate the comprehensive weight value O(k) based on the weight relationship of the first sorting result O1(k), the second sorting result O2(k), and the third sorting result O3(k), and sort them from smallest to largest to obtain the final sorting result; S6: Determine the number of units that need to be turned on, turned off, or maintained based on changes in the terminal load. If the unit needs to be turned on, turn on the unit that is currently in a stopped state and has the smallest O(k) ranking. If the unit needs to be turned off, turn off the unit that is currently in a started state and has the largest O(k) ranking.

2. The method for group control of air source heat pump units according to claim 1, characterized in that, In S2, a first temperature sensor is installed at a location far from the air source heat pump unit to detect the actual ambient temperature in real time.

3. The method for group control of air source heat pump units according to claim 1, characterized in that, In S2, a second temperature sensor is installed at the air-side heat exchanger of each air source heat pump unit to detect the air temperature around each unit in real time.

4. The method for group control of air source heat pump units according to claim 1, characterized in that, In S2, if the unit is in the start-up state, calculate the decay rate of the air temperature around the unit during the time period τ2~τ3. : ， ， 。 5. A group control method for air source heat pump units according to claim 1, characterized in that, In S2, if the unit is in a shut-down state, calculate the decay rate of the air temperature around the unit during the time period τ1~τ2. : ， ， 。 6. A group control method for air source heat pump units according to any one of claims 1-5, characterized in that, In S5, the comprehensive weight value O(k) is calculated based on the weight relationship between the first sorting result O1(k), the second sorting result O2(k), and the third sorting result O3(k). O(k) = α×O1(k) + β×O2(k) + γO3(k), where α, β, and γ are weight coefficients, and α + β + γ = 1.

7. An air source heat pump unit, characterized in that, The control is performed using the group control method described in any one of claims 1-6.

8. An electronic device, characterized in that, The device includes a processor, a network interface, and a memory, which are interconnected. The memory is used to store a computer program, which includes program instructions. The processor is configured to invoke the program instructions to execute the group control method as described in any one of claims 1-6.

9. A computer-readable storage medium, characterized in that, The system includes a stored computer program, wherein, when the computer program is executed, it controls the device containing the computer-readable storage medium to perform the group control method as described in any one of claims 1-6.

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