Operation control method, device and equipment for air conditioner in machine room and storage medium

Abstract

The embodiment of the invention provides an operation control method, device and equipment for an air conditioner in a machine room and a storage medium, according to the method, two PID controllers are adopted for cascade control so as to conduct cascade regulation, the change of the current power of a server cabinet input by the second PID controller can be detected in time, and the current power does not have hysteresis like the change of temperature, so that the stability of the server cabinet is improved, and the service life of the server cabinet is prolonged. Therefore, the refrigerating capacity can be adjusted in advance through the second PID controller after the power of the server changes, and the temperature change amplitude is smaller than the temperature change amplitude adjusted by a single PID controller in this way, so that the temperature change amplitude of the machine room can be reduced, the thermal stabilization time of the machine room is shortened, and the service life of the machine room is prolonged. The operation stability of the machine room air conditioner is improved.

Description

Technical Field

[0001] The present application relates to the technical field of computer room air conditioners, and in particular to an operation control method, device, equipment and storage medium for a computer room air conditioner. Background Art

[0002] The computer room air conditioner in the data center is an air conditioning device used to remove the heat generated by the servers from the data room and send cold air back to the data center.

[0003] For the water-cooled precision air conditioner in the computer room, the indoor unit is mainly composed of: a surface cooler, a fan and a water flow regulating valve. The current refrigeration regulation method is to adjust the water and air volume of the surface cooler through the deviation between the supply air or return air temperature feedback value and the temperature setting value. Specifically, the PID controller (Proportion Integration Differentiation) is used to adjust the state of the water flow regulating valve and the fan so that the cooling capacity of the air conditioner can meet the heat generation of the server cabinet.

[0004] However, when the temperature in the machine room is affected by some external factors, the temperature will not change in time, but will change after a period of time. It is a large variable with lag. When the temperature sensor detects the temperature change and adjusts the water flow control valve opening or the fan speed, it often causes the control force to be too large, causing the precision air conditioner to overshoot, large deviation, and the system cannot converge quickly. The oscillation cycle is long during the entire precision air conditioning adjustment process, resulting in dynamic hydraulic imbalance, and the pressure difference at the end of the pipeline frequently deviates from the set point, causing the chilled water pump to frequently adjust its speed, posing a major hidden danger to the stable operation and energy saving of the entire air conditioning system. Summary of the invention

[0005] The embodiments of the present application provide an operation control method, device, equipment and storage medium of a computer room air conditioner, which are used to improve the stability of the operation of the computer room air conditioner.

[0006] In a first aspect, an embodiment of the present application provides an operation control method of a computer room air conditioner, comprising:

[0007] The return air temperature setting value and the monitored current return air temperature of the computer room air conditioner are used as inputs of the first PID controller to obtain the reference power of the server cabinet;

[0008] The reference power and the monitored current power of the server cabinet are used as inputs of the second PID controller to obtain a parameter value for adjusting the cooling capacity of the refrigeration unit, so that the second PID controller adjusts the cooling capacity of the refrigeration unit based on the parameter value.

[0009] In some embodiments, the method further comprises:

[0010] If the current power of the server cabinet is greater than the reference power, increasing the cooling capacity of the refrigeration unit is represented by the parameter value output by the second PID controller, so that the second PID controller increases the cooling capacity of the refrigeration unit based on the parameter value;

[0011] If the current power of the server cabinet is less than the first parameter value, the parameter value output by the second PID controller represents reducing the cooling capacity of the refrigeration unit, so that the second PID controller reduces the cooling capacity of the refrigeration unit based on the parameter value.

[0012] In some embodiments, the refrigeration unit includes a water flow regulating valve; the second PID controller adjusts the refrigeration capacity of the refrigeration unit based on the parameter value, including:

[0013] The second PID controller determines the target opening corresponding to the current parameter value according to the correspondence between the pre-established parameter value and the opening of the water flow regulating valve, and adjusts the opening of the water flow regulating valve to the target opening to adjust the cooling capacity of the water flow regulating valve.

[0014] In some embodiments, the refrigeration unit includes a fan; and the second PID controller adjusts the refrigeration capacity of the refrigeration unit based on the parameter value, including:

[0015] The second PID controller determines a target speed corresponding to a current parameter value according to a pre-established correspondence between the parameter value and the speed of the fan, and adjusts the speed of the fan to the target speed to adjust the cooling capacity of the fan.

[0016] In some embodiments, the current return air temperature of the computer room air conditioner is monitored by:

[0017] Acquire temperature detection values ​​of a plurality of temperature sensors installed on the surface of the server cabinet;

[0018] An average value of the temperature detection values ​​of the multiple temperature sensors is used as the current return air temperature of the computer room air conditioner.

[0019] In a second aspect, an embodiment of the present application further provides an operation control device for a computer room air conditioner, comprising:

[0020] A reference power determination module, used to use the return air temperature setting value and the monitored current return air temperature of the computer room air conditioner as inputs of the first PID controller to obtain a reference power of the server cabinet;

[0021] A parameter value determination module is used to use the reference power and the monitored current power of the server cabinet as inputs of the second PID controller to obtain a parameter value for adjusting the cooling capacity of the refrigeration unit, so that the second PID controller adjusts the cooling capacity of the refrigeration unit based on the parameter value.

[0022] In some embodiments, the parameter value determination module is further configured to:

[0023] If the current power of the server cabinet is greater than the reference power, increasing the cooling capacity of the refrigeration unit is represented by the parameter value output by the second PID controller, so that the second PID controller increases the cooling capacity of the refrigeration unit based on the parameter value;

[0024] If the current power of the server cabinet is less than the first parameter value, the parameter value output by the second PID controller represents reducing the cooling capacity of the refrigeration unit, so that the second PID controller reduces the cooling capacity of the refrigeration unit based on the parameter value.

[0025] In some embodiments, the refrigeration unit includes a water flow regulating valve; the second PID controller adjusts the refrigeration capacity of the refrigeration unit based on the parameter value, including:

[0026] The second PID controller determines the target opening corresponding to the current parameter value according to the correspondence between the pre-established parameter value and the opening of the water flow regulating valve, and adjusts the opening of the water flow regulating valve to the target opening to adjust the cooling capacity of the water flow regulating valve.

[0027] In some embodiments, the refrigeration unit includes a fan; and the second PID controller adjusts the refrigeration capacity of the refrigeration unit based on the parameter value, including:

[0028] The second PID controller determines a target speed corresponding to a current parameter value according to a pre-established correspondence between the parameter value and the speed of the fan, and adjusts the speed of the fan to the target speed to adjust the cooling capacity of the fan.

[0029] In some embodiments, the current return air temperature of the computer room air conditioner is monitored by:

[0030] Acquire temperature detection values ​​of a plurality of temperature sensors installed on the surface of the server cabinet;

[0031] An average value of the temperature detection values ​​of the multiple temperature sensors is used as the current return air temperature of the computer room air conditioner.

[0032] In a third aspect, an embodiment of the present application further provides an electronic device, including a memory and a processor;

[0033] The memory is used to store instructions;

[0034] The processor is used to execute instructions stored in the memory. When the processor executes the instructions stored in the memory, the electronic device executes the method as described in any one of the first aspects.

[0035] In a fourth aspect, an embodiment of the present application further provides a computer storage medium, wherein instructions are stored in the computer storage medium, and when the instructions are executed on a computer, the computer executes the method as described in any one of the first aspects.

[0036] An embodiment of the present application provides an operation control method, device, equipment and storage medium for a computer room air conditioner. The method includes taking the return air temperature set value and the monitored current return air temperature of the computer room air conditioner as inputs of a first PID controller to obtain a reference power of a server cabinet; taking the reference power and the monitored current power of the server cabinet as inputs of a second PID controller to obtain a parameter value for adjusting the cooling capacity of a refrigeration unit, so that the second PID controller adjusts the cooling capacity of the refrigeration unit based on the parameter value.

[0037] The above method uses two PID controllers for cascade control to perform cascade regulation, wherein the current power of the server cabinet input by the second PID controller can detect changes in time, and does not have a lag like the temperature change. Therefore, the cooling capacity can be adjusted in advance by the second PID controller after the server power changes. In this way, the temperature change amplitude will be smaller than the temperature change amplitude adjusted by a single PID controller, thereby reducing the temperature change amplitude of the computer room, reducing the thermal stabilization time of the computer room, and improving the stability of the air conditioning operation in the computer room. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] In order to more clearly illustrate the technical solution of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0039] Figure 1 A schematic diagram of a flow chart of an operation control method of a computer room air conditioner provided in an embodiment of the present application;

[0040] Figure 2 A schematic diagram of a cascade PID control provided in an embodiment of the present application;

[0041] Figure 3 A parameter correspondence diagram provided for an embodiment of the present application;

[0042] Figure 4 A schematic diagram of a hardware connection provided in an embodiment of the present application;

[0043] Figure 5 A schematic diagram of the structure of an operation control device for a computer room air conditioner provided in an embodiment of the present application;

[0044] Figure 6 A schematic diagram of the structure of an electronic device provided in an embodiment of the present application. DETAILED DESCRIPTION

[0045] In order to make the purpose, technical solutions and advantages of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the accompanying drawings. Obviously, the described embodiments are only 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 ordinary technicians in this field belong to the scope of protection of this application.

[0046] Furthermore, in the description of the embodiments of the present application, unless otherwise specified, “ / ” means or. For example, A / B can mean A or B. The “and / or” in the text is merely a description of the association relationship of associated objects, indicating that three relationships may exist. For example, A and / or B can mean: A exists alone, A and B exist at the same time, and B exists alone. In addition, in the description of the embodiments of the present application, “multiple” refers to two or more than two.

[0047] In the following, the terms "first" and "second" are used for descriptive purposes only and should not be understood as suggesting or implying relative importance or implicitly indicating the number of technical features indicated. Thus, features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the embodiments of the present application, unless otherwise specified, "multiple" means two or more.

[0048] The servers in the data room generate a lot of heat, and the room air conditioner is used to control the temperature of the data room within a stable range to ensure that the server can run smoothly. For water-cooled precision air conditioners, a single PID controller is generally used to adjust the opening of the water flow control valve or the speed of the fan to adjust the cooling capacity. The current control logic is to input the real-time detected return air temperature and the preset return air temperature setting value into the PID controller, and output a parameter value according to the deviation between the return air temperature and the return air temperature setting value to adjust the opening of the water flow control valve or the speed of the fan. However, the temperature itself is a lagging variable and will not change in time. For example, when the load of the server suddenly increases and the power suddenly increases, the temperature will inevitably increase. However, due to the characteristics of the temperature itself, it will not increase immediately, but the temperature will start to rise after the server has been running for a period of time, and once the temperature starts to rise, its rising rate will gradually accelerate, which will cause the PID controller to adjust the water flow control valve or fan too much control. For example, taking the water flow regulating valve as an example, when the server power increases and runs for a period of time, the temperature increases sharply. At this time, the water flow regulating valve is controlled to be open at a large degree to speed up the cooling. After the temperature drops, it may drop too low, so the water flow regulating valve will be controlled to be open at a small degree to speed up the heating. This is the overshoot phenomenon. Such repeated oscillations cause the temperature to fluctuate within a larger range. The data room takes a long time to reach thermal stability, and the entire air-conditioning system operates unstably.

[0049] In order to solve the above problems, the present application provides an operation control method of a computer room air conditioner, such as Figure 1 As shown, the method includes:

[0050] S101, using the return air temperature setting value and the monitored current return air temperature of the computer room air conditioner as inputs of a first PID controller to obtain a reference power of a server cabinet;

[0051] S102. Using the reference power and the monitored current power of the server cabinet as inputs of the second PID controller to obtain a parameter value for adjusting the cooling capacity of the refrigeration unit, so that the second PID controller adjusts the cooling capacity of the refrigeration unit based on the parameter value.

[0052] The operation control method of the computer room air conditioner provided in the embodiment of the present application adopts two PID controllers for cascade control to perform cascade regulation, wherein the current power of the server cabinet input by the second PID controller can detect changes in time, and does not have a lag like the temperature change. Therefore, the cooling capacity can be adjusted in advance by the second PID controller after the server power changes. In this way, the temperature change amplitude will be smaller than the temperature change amplitude adjusted by a single PID controller, thereby reducing the temperature change amplitude of the computer room, reducing the thermal stabilization time of the computer room, and improving the stability of the operation of the computer room air conditioner.

[0053] like Figure 2 As shown, it is a schematic diagram of a cascade PID regulation provided by an embodiment of the present application, in which two PID controllers perform cascade control, wherein the first PID controller is used as an outer loop control, i.e., the main controller, and selects the slow-response temperature as input, and the output value of the outer loop (reference power) is used as the input of the inner loop; the second PID controller is used as an inner loop control, i.e., the sub-controller, and selects the fast-response power as input. When the current power of the server changes, the control system adjusts the cooling capacity of the refrigeration unit in advance due to the existence of the sub-controller, thereby increasing the operating frequency of the system, reducing oscillation, and stabilizing the return air temperature at the set value.

[0054] In a specific implementation, the calculation formula of the PID controller output value is as follows:

[0055]

[0056] Among them, PIDOUTn is the output value of the PID controller at the nth sampling moment, Kp is the gain, SVn and PVn are the set value and process variable at the nth sampling moment respectively, Ts is the sampling moment, Ti is the integral time, and TD is the differential time.

[0057] For this application, the output value of the PID controller is mainly related to SVn and PVn, and the remaining parameters can be set according to the actual situation, that is, the size of PIDOUTn is mainly affected by the deviation value of SVn and PVn, where SVn corresponds to the return air temperature setting value or reference power in this application, and PVn corresponds to the current return air temperature or current power in this application. In other words, the final output value of the PID controller is mainly determined by the deviation between the return air temperature setting value in this application and the current return air temperature of the monitored computer room air conditioner, as well as by the deviation between the reference power in this application and the current power of the monitored server cabinet.

[0058] In specific implementations, the refrigeration unit can be a water flow regulating valve or a fan. The water flow regulating valve or the fan can be adjusted alone, or both the water flow regulating valve and the fan can be adjusted at the same time. The ultimate goal is to adjust the cooling capacity of the air conditioner to stabilize the temperature of the computer room.

[0059] If the refrigeration unit is a water flow regulating valve, the second PID controller can determine the target opening corresponding to the current parameter value based on the correspondence between the pre-established parameter value and the opening of the water flow regulating valve, and adjust the opening of the water flow regulating valve to the target opening to adjust the cooling capacity of the water flow regulating valve; if the refrigeration unit is a fan, the second PID controller can determine the target speed corresponding to the current parameter value based on the correspondence between the pre-established parameter value and the speed of the fan, and adjust the speed of the fan to the target speed to adjust the cooling capacity of the fan.

[0060] For ease of understanding, the following takes the refrigeration unit as a water flow control valve as an example to illustrate the process of PID cascade regulation:

[0061] like Figure 3 As shown, it is a parameter correspondence diagram provided in an embodiment of the present application, wherein the output results of the first PID controller and the second PID controller are both in the range of (5530, 27648).

[0062] For the first PID controller, its output result needs to be converted into reference power so as to match the current power and serve as the input of the second PID controller. This correspondence can be a linear correspondence, that is, (5530, 27648) linearly corresponds to (0, 5000W). As an example, 5530 corresponds to 0W, 11059 corresponds to 2500W, and 27648 corresponds to 5000W. Assuming that the return air temperature setting value is 37°C, according to the control principle of the PID controller, the current return air temperature of the computer room air conditioner monitored will always be adjusted to approach 37°C. If the current return air temperature is greater than 37°C, it will be adjusted to approach 37°C. If the current return air temperature is less than 37°C, it will be adjusted to approach 37°C. However, according to the PID control mechanism, it will only approach 37°C infinitely, and will not be completely equal to 37°C. Such a dynamic adjustment process makes the current return air temperature stable near the return air temperature setting value.

[0063] For the second PID controller, since the opening adjustment of the water flow control valve requires a current value for identification, its output result needs to be converted into a current value. This correspondence can also be a linear correspondence, that is, (5530, 27648) linearly corresponds to (4mA, 20mA), and (4mA, 20mA) linearly corresponds to the opening size of the water flow control valve is (0%, 100%). As an example, 5530 corresponds to 4mA, and 4mA corresponds to 0%; 11059 corresponds to 12mA, and 12mA corresponds to 50%; 27648 corresponds to 20mA, and 20mA corresponds to 100%. Assuming that the reference power initially output by the first PID controller is 2500W, the current power of the monitored server cabinet and the reference power are input into the second PID controller to output parameter values ​​in the range of (5530, 27648), which are converted into corresponding currents to control the opening of the water flow regulating valve, thereby adjusting the cooling capacity so that the current return air temperature is stabilized near the return air temperature set value.

[0064] In a specific implementation, if the current power of the server cabinet is greater than the reference power, the parameter value output by the second PID controller represents the increase in the cooling capacity of the refrigeration unit, so that the second PID controller increases the cooling capacity of the refrigeration unit based on the parameter value;

[0065] If the current power of the server cabinet is less than the first parameter value, the parameter value output by the second PID controller represents reducing the cooling capacity of the refrigeration unit, so that the second PID controller reduces the cooling capacity of the refrigeration unit based on the parameter value.

[0066] It is worth noting that due to the PID control mechanism, the current power of the server cabinet will not be equal to the first parameter value, but the two will be infinitely close, that is, the PID control is always in a dynamic adjustment process.

[0067] As an example, when the computer room air conditioner is in stable operation, the return air temperature will stabilize at around 37°C. At this time, the operating power of the server is around 2500W, and the corresponding water flow regulating valve opening is around 50%, and the entire air conditioning system is in a stable operation state. At this time, due to the influence of certain factors, the server load suddenly increases, and the power suddenly increases to 3000W, which will inevitably cause the temperature to rise. However, due to the hysteresis of the temperature, it takes some time to rise. By using the cascade PID control method provided by this application, the second PID controller will detect the power change in time, and at this time, the opening of the water flow regulating valve will be increased in advance, and the cooling capacity will be increased in advance. This will not cause the subsequent temperature to increase sharply, but increase slowly, and will not even affect the temperature change. In other words, by using the cascade control method provided by this application, there will be no instantaneous excessive or low opening, and the temperature will not continue to fluctuate. The thermal stabilization time will be greatly shortened, thereby improving the stability of the computer room air conditioner operation. The process of power reduction and temperature reduction is similar, and will not be repeated here.

[0068] In the specific implementation, Figure 4 As shown, it is a hardware connection diagram provided in an embodiment of the present application. The terminal power distribution technology of the data center generally adopts the form of a terminal cabinet plus cable distribution. The terminal cabinet can collect the electrical parameters (current, voltage, power) of each server cabinet, and the control box obtains the power of the server cabinet in the air-conditioning refrigeration area through communication.

[0069] The current return air temperature of the computer room air conditioner is monitored by: obtaining the temperature detection values ​​of multiple temperature sensors installed on the surface of the server cabinet; and taking the average value of the temperature detection values ​​of the multiple temperature sensors as the current return air temperature of the computer room air conditioner. Figure 4 As shown, temperature sensors are installed on the upper, middle and lower surfaces of the server cabinet to form a controlled temperature field, and then the average value of the temperature detection values ​​of the three temperature sensors is used as the current return air temperature of the computer room air conditioner. This method can make the monitored current return air temperature more accurate.

[0070] Based on the same concept, the embodiment of the present application also provides an operation control device for a computer room air conditioner, such as Figure 5 As shown, the device comprises:

[0071] A reference power determination module 501 is used to use the return air temperature setting value and the monitored current return air temperature of the computer room air conditioner as inputs of a first PID controller to obtain a reference power of the server cabinet;

[0072] The parameter value determination module 502 is used to use the reference power and the monitored current power of the server cabinet as inputs of the second PID controller to obtain a parameter value for adjusting the cooling capacity of the refrigeration unit, so that the second PID controller adjusts the cooling capacity of the refrigeration unit based on the parameter value.

[0073] In some embodiments, the parameter value determination module 502 is further configured to:

[0074] If the current power of the server cabinet is greater than the reference power, the parameter value output by the second PID controller indicates that the cooling capacity of the refrigeration unit is increased, so that the second PID controller increases the cooling capacity of the refrigeration unit based on the parameter value;

[0075] If the current power of the server cabinet is less than the first parameter value, the parameter value output by the second PID controller represents reducing the cooling capacity of the refrigeration unit, so that the second PID controller reduces the cooling capacity of the refrigeration unit based on the parameter value.

[0076] In some embodiments, the refrigeration unit includes a water flow regulating valve; the second PID controller adjusts the refrigeration capacity of the refrigeration unit based on the parameter value, including:

[0077] The second PID controller determines the target opening corresponding to the current parameter value according to the correspondence between the pre-established parameter value and the opening of the water flow regulating valve, and adjusts the opening of the water flow regulating valve to the target opening to adjust the cooling capacity of the water flow regulating valve.

[0078] In some embodiments, the refrigeration unit includes a fan; the second PID controller adjusts the refrigeration capacity of the refrigeration unit based on the parameter value, including:

[0079] The second PID controller determines a target speed corresponding to the current parameter value according to a pre-established correspondence between the parameter value and the speed of the fan, and adjusts the speed of the fan to the target speed to adjust the cooling capacity of the fan.

[0080] In some embodiments, the current return air temperature of the computer room air conditioner is monitored by:

[0081] Acquire temperature detection values ​​of multiple temperature sensors installed on the surface of the server cabinet;

[0082] The average value of the temperature detection values ​​of the multiple temperature sensors is used as the current return air temperature of the computer room air conditioner.

[0083] Based on the same concept, the embodiment of the present application also provides an electronic device, the implementation of which can refer to the implementation of the above method, and the repeated parts will not be repeated. Figure 6 As shown, the electronic device includes a memory 601 and a processor 602;

[0084] The memory 601 is used to store instructions;

[0085] The processor 602 is used to execute the instructions stored in the memory 601. When the processor 602 executes the instructions stored in the memory, the device executes any of the above-mentioned methods for controlling the operation of the computer room air conditioner.

[0086] Furthermore, an embodiment of the present application also provides a computer storage medium, in which instructions are stored, and when the computer storage medium is executed on a computer, the computer executes any of the above-mentioned methods for controlling the operation of the computer room air conditioner.

[0087] An embodiment of the present application provides an operation control method, device, equipment and storage medium for a computer room air conditioner. The method includes taking the return air temperature set value and the monitored current return air temperature of the computer room air conditioner as inputs of a first PID controller to obtain a reference power of a server cabinet; taking the reference power and the monitored current power of the server cabinet as inputs of a second PID controller to obtain a parameter value for adjusting the cooling capacity of a refrigeration unit, so that the second PID controller adjusts the cooling capacity of the refrigeration unit based on the parameter value.

[0088] The above method uses two PID controllers for cascade control to perform cascade regulation, wherein the current power of the server cabinet input by the second PID controller can detect changes in time, and does not have a lag like the temperature change. Therefore, the cooling capacity can be adjusted in advance by the second PID controller after the server power changes. In this way, the temperature change amplitude will be smaller than the temperature change amplitude adjusted by a single PID controller, thereby reducing the temperature change amplitude of the computer room, reducing the thermal stabilization time of the computer room, and improving the stability of the air conditioning operation in the computer room.

[0089] Those skilled in the art will appreciate that the embodiments of the present application may be provided as methods, systems, or computer program products. Therefore, the present application may adopt the form of a complete hardware embodiment, a complete software embodiment, or an embodiment in combination with software and hardware. Moreover, the present application may adopt the form of a computer program product implemented in one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) that include computer-usable program code.

[0090] The present application is described with reference to the flowcharts and / or block diagrams of the methods, devices (systems), and computer program products according to the present application. It should be understood that each process and / or box in the flowchart and / or block diagram, as well as the combination of the processes and / or boxes in the flowchart and / or block diagram, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, a special-purpose computer, an embedded processor, or other programmable data processing device to produce a machine, so that the instructions executed by the processor of the computer or other programmable data processing device generate instructions for implementing the processes in the flowchart and / or block diagram. Figure 1 A process or multiple processes and / or boxes Figure 1 A device that provides the functions specified in a block or multiple blocks.

[0091] These computer program instructions may also be stored in a computer readable memory capable of directing a computer or other programmable data processing device to operate in a specific manner, so that the instructions stored in the computer readable memory produce an article of manufacture including an instruction device, which implements the process Figure 1 A process or multiple processes and / or boxes Figure 1 A function specified in one or more boxes.

[0092] These computer program instructions can also be loaded onto a computer or other programmable data processing device so that a series of operating steps are executed on the computer or other programmable device to produce a computer-implemented process, thereby providing instructions for implementing the process in the computer or other programmable device. Figure 1 A process or multiple processes and / or boxes Figure 1 The steps for the functions specified in one or more boxes.

[0093] Obviously, those skilled in the art can make various changes and modifications to the present application without departing from the spirit and scope of the present application. Thus, if these modifications and variations of the present application fall within the scope of the claims of the present application and their equivalents, the present application is also intended to include these modifications and variations.

Claims

1. A method for controlling the operation of a computer room air conditioner, characterized in that: include: The return air temperature setting value and the monitored current return air temperature of the computer room air conditioner are used as inputs of the first PID controller to obtain the reference power of the server cabinet; The reference power and the monitored current power of the server cabinet are used as inputs of the second PID controller to obtain a parameter value for adjusting the cooling capacity of the refrigeration unit, so that the second PID controller adjusts the cooling capacity of the refrigeration unit based on the parameter value.

2. The method according to claim 1, characterized in that The method further comprises: If the current power of the server cabinet is greater than the reference power, increasing the cooling capacity of the refrigeration unit is represented by the parameter value output by the second PID controller, so that the second PID controller increases the cooling capacity of the refrigeration unit based on the parameter value; If the current power of the server cabinet is less than the first parameter value, the parameter value output by the second PID controller represents reducing the cooling capacity of the refrigeration unit, so that the second PID controller reduces the cooling capacity of the refrigeration unit based on the parameter value.

3. The method according to claim 1, characterized in that The refrigeration unit includes a water flow regulating valve; The second PID controller adjusts the refrigeration capacity of the refrigeration unit based on the parameter value, comprising: The second PID controller determines the target opening corresponding to the current parameter value according to the correspondence between the pre-established parameter value and the opening of the water flow regulating valve, and adjusts the opening of the water flow regulating valve to the target opening to adjust the cooling capacity of the water flow regulating valve.

4. The method according to claim 1, characterized in that The refrigeration unit includes a fan; the second PID controller adjusts the refrigeration capacity of the refrigeration unit based on the parameter value, including: The second PID controller determines a target speed corresponding to a current parameter value according to a pre-established correspondence between the parameter value and the speed of the fan, and adjusts the speed of the fan to the target speed to adjust the cooling capacity of the fan.

5. The method according to any one of claims 1 to 4, characterized in that: The current return air temperature of the computer room air conditioner is monitored in the following manner: Acquire temperature detection values ​​of a plurality of temperature sensors installed on the surface of the server cabinet; An average value of the temperature detection values ​​of the multiple temperature sensors is used as the current return air temperature of the computer room air conditioner.

6. An operation control device for a computer room air conditioner, characterized in that: include: A reference power determination module, used to use the return air temperature setting value and the monitored current return air temperature of the computer room air conditioner as inputs of the first PID controller to obtain a reference power of the server cabinet; A parameter value determination module is used to use the reference power and the monitored current power of the server cabinet as inputs of the second PID controller to obtain a parameter value for adjusting the cooling capacity of the refrigeration unit, so that the second PID controller adjusts the cooling capacity of the refrigeration unit based on the parameter value.

7. The device according to claim 6, characterized in that The parameter value determination module is also used for: If the current power of the server cabinet is greater than the reference power, increasing the cooling capacity of the refrigeration unit is represented by the parameter value output by the second PID controller, so that the second PID controller increases the cooling capacity of the refrigeration unit based on the parameter value; If the current power of the server cabinet is less than the first parameter value, the parameter value output by the second PID controller represents reducing the cooling capacity of the refrigeration unit, so that the second PID controller reduces the cooling capacity of the refrigeration unit based on the parameter value.

8. The device according to claim 6, characterized in that The current return air temperature of the computer room air conditioner is monitored in the following manner: Acquire temperature detection values ​​of a plurality of temperature sensors installed on the surface of the server cabinet; An average value of the temperature detection values ​​of the multiple temperature sensors is used as the current return air temperature of the computer room air conditioner.

9. An electronic device, characterized in that: including memory and processor; The memory is used to store instructions; The processor is used to execute the instructions stored in the memory. When the processor executes the instructions stored in the memory, the electronic device executes the method according to any one of claims 1 to 5.

10. A computer storage medium, characterized in that: The computer storage medium stores instructions, which, when executed on a computer, enable the computer to execute the method according to any one of claims 1 to 5.

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