Data center cooling control method, apparatus, device, and system

Abstract

The application discloses a data center cooling control method, device, equipment and system, which can realize the task of controlling the data center cooling system, wherein the data center cooling system comprises at least one cold source device, a plurality of front-end devices with the cold source device as a cold source and a water supply pipeline connecting the cold source device and the front-end devices. Specifically, when the front-end device is controlled, the actual temperature values of each cabinet in the air supply range of the front-end device are acquired, and then the fan frequency and the water valve opening degree of the front-end device are adjusted according to the actual temperature values and the preset temperature threshold; when the cold source device is controlled, the actual water valve opening degrees of each front-end device with the cold source device as a cold source are acquired, and then the cooling capacity of the cold source device is adjusted according to the actual water valve opening degrees and the preset opening degree threshold, so that the data center cooling control task with high response speed and good control accuracy can be realized.

Description

Technical Field

[0001] This application relates to the field of data center cooling control technology, and more specifically, to a data center cooling control method, apparatus, equipment and system. Background Technology

[0002] Existing data centers are mainly cooled by cold source equipment and front-end equipment. The cold source equipment may include equipment such as chillers, water pumps, cooling towers or plate heat exchangers, while the front-end equipment may include equipment such as precision air conditioners or in-row air conditioners.

[0003] When controlling cooling in data centers, the classic PID control algorithm is often used. Specifically, for front-end equipment, the actual supply or return air temperature is often used as the control basis. The temperature sensors used to obtain the actual supply or return air temperature are placed on the front-end equipment itself, which deviates from the actual rack temperature. This inaccurate control basis leads to poor control performance for the front-end equipment. For the cooling source equipment, the control logic is post-control. That is, after the insufficient cooling supply from the front-end equipment causes the temperature in the data center to rise, the chilled water temperature in the cooling system to rise, and the demand for chilled water to increase, the target cooling capacity for the cooling source equipment is determined by the temperature difference and pressure difference of the chilled water. The target cooling capacity is then matched with the current cooling capacity to determine the control strategy for the cooling source equipment. The existing control method for the cooling source equipment has a long loop. The change in cooling demand from the front-end equipment can only be transmitted to the cooling source equipment after the temperature of the water supply circuit has increased. The control of the cooling source equipment lags too much behind the change in cooling demand from the front-end equipment, which may lead to excessively high or low temperatures in the data center and poor control performance for the cooling source equipment. Summary of the Invention

[0004] In view of the above problems, this application is made to provide a data center cooling control method, apparatus, equipment and system to achieve data center cooling control tasks with high response speed and good control accuracy.

[0005] The specific plan is as follows:

[0006] In a first aspect, a data center cooling control method is provided, applied to a data center cooling system. The data center cooling system includes at least one cold source device, a plurality of front-end devices using the cold source device as a cold source, and water supply pipes connecting the cold source device and the front-end devices. The method includes:

[0007] For each of the aforementioned front-end devices, the actual temperature value of each cabinet within the air supply range of the front-end device is obtained, and the fan frequency and water valve opening of the front-end device are adjusted according to the actual temperature value and the preset temperature threshold.

[0008] For each of the aforementioned cold source devices, the actual water valve opening degree of each front-end device using the cold source device as the cold source is obtained, and the cooling capacity of the cold source device is adjusted according to the actual water valve opening degree and the preset opening threshold.

[0009] Secondly, a data center cooling control device is provided, applied to a data center cooling system. The data center cooling system includes at least one cold source device, a plurality of front-end devices using the cold source device as a cold source, and water supply pipes connecting the cold source device and the front-end devices. The device includes:

[0010] The front-end equipment control unit is used to obtain the actual temperature value of each cabinet within the air supply range of each front-end equipment, and adjust the fan frequency and water valve opening of the front-end equipment according to the actual temperature value and a preset temperature threshold.

[0011] The cold source equipment control unit is used to obtain the actual water valve opening degree of each front-end device that uses the cold source equipment as a cold source for each of the cold source equipments, and adjust the cooling capacity of the cold source equipment according to the actual water valve opening degree and the preset opening degree threshold.

[0012] Thirdly, a data center cooling control device is provided, including: a memory and a processor;

[0013] The memory is used to store programs;

[0014] The processor is used to execute the program to implement the various steps of the data center cooling control method described above.

[0015] Fourthly, a data center cooling control system is provided, including a data center cooling system, a temperature acquisition device, and the aforementioned data center cooling control equipment;

[0016] The data center cooling system includes at least one cold source device, several front-end devices using the cold source device as the cold source, and water supply pipes connecting the cold source device and the front-end devices.

[0017] The temperature acquisition device is installed in the server racks of the data center to collect the actual temperature values ​​of the server racks.

[0018] By employing the above technical solution, this application uses the actual temperature of each cabinet within the air supply range as the control basis when controlling the front-end equipment. It eliminates the need to wait for temperature changes at the cabinets to trigger temperature changes at the front-end equipment before controlling it. Compared to current solutions that use the temperature at the front-end equipment's installation location as the control basis, this solution uses data that more accurately reflects the data center's temperature situation as the basis for front-end equipment control, shortening the response time and improving the accuracy of front-end equipment control. When controlling the cooling source equipment, the actual water valve opening of the front-end equipment is used as the control basis. Specifically, the actual water valve opening... An excessively high actual water valve opening indicates that the front-end equipment is operating under high load, thus indicating a high demand for cooling and requiring an increase in the cooling capacity of the cooling source equipment. Conversely, an excessively low actual water valve opening indicates that the front-end equipment is operating under low load, thus indicating a lower demand for cooling and allowing a reduction in the cooling capacity of the cooling source equipment. By using the actual water valve opening of the front-end equipment to measure its cooling demand and then controlling the cooling capacity of the cooling source equipment, the response time for controlling the cooling source equipment can be shortened. This can prevent data center temperatures from becoming too high or too low due to control lag, thereby improving the accuracy of cooling source equipment control. Attached Figure Description

[0019] Various other advantages and benefits will become apparent to those skilled in the art upon reading the following detailed description of preferred embodiments. The accompanying drawings are for illustrative purposes only and are not intended to limit the scope of this application. Furthermore, the same reference numerals denote the same parts throughout the drawings. In the drawings:

[0020] Figure 1 A flowchart illustrating a data center cooling control method provided in an embodiment of this application;

[0021] Figure 2 An example is a schematic diagram of a data center structure;

[0022] Figure 3 An example is a schematic diagram of the control process of a front-end device;

[0023] Figure 4 An example is a schematic diagram of the control process of a cold source device;

[0024] Figure 5 An example is a schematic diagram of a data center cooling system;

[0025] Figure 6 A schematic diagram of a data center cooling control device provided in an embodiment of this application;

[0026] Figure 7A schematic diagram of the structure of a data center cooling control device provided in this application embodiment;

[0027] Figure 8 This is a schematic diagram of the structure of a data center cooling control system provided in the embodiments of this application. Detailed Implementation

[0028] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0029] This application provides a data center cooling control scheme. This scheme can be applied to data center cooling systems. By controlling the data center cooling system using this scheme, data center cooling control tasks with fast response speed and good control accuracy can be achieved.

[0030] Specifically, the data center cooling system may include at least one cold source device, several front-end devices using the cold source device as the cold source, and water supply pipes connecting the cold source device and the front-end devices. The cold source device can supply cooling to the front-end devices through the water supply pipes, so that the front-end devices can provide cooling for each rack in the data center. For example, the front-end devices may be precision air conditioners.

[0031] Furthermore, after the existing building control system or PLC control system has completed the control of the data center cooling system and reached a steady state under the current conditions, the solution proposed in this application can be used to realize subsequent cooling control tasks, thereby improving the control response speed and accuracy.

[0032] Figure 1 This is a flowchart illustrating a data center cooling control method according to an embodiment of this application. The control method may include two parts: front-end device control and cooling source device control.

[0033] Regarding the front-end device control section, it should be noted that the same control method can be used for each front-end device. Specifically, the process of controlling any front-end device may include the following steps:

[0034] Step S101: Obtain the actual temperature value of each cabinet within the air supply range of the front-end device.

[0035] Optionally, a temperature acquisition device deployed at the server rack can be used to collect the actual temperature value of the server rack. For example, the temperature acquisition device can be a temperature sensor or a temperature-humidity composite sensor. The temperature-humidity composite sensor can collect the actual humidity value of the server rack at the same time as collecting the actual temperature value. By collecting and monitoring the actual humidity value, an alarm signal can be output when the humidity in the data center is too high, thereby improving the security of the data center.

[0036] Figure 2 An example is a schematic diagram of a data center structure, such as... Figure 2 As shown, a set of cabinets consists of two rows of cabinets 201 and 202. Several temperature acquisition devices are scattered around the cabinets. When arranging the cabinets, the passage between the two rows of cabinets is designated as a hot aisle, which corresponds to the return air vents of front-end devices A and B. The passages on both sides of the set of cabinets are designated as cold aisles, which correspond to the air supply vents of front-end devices A and B, respectively. The air flow directions of the cold and hot aisles are shown in Figure 1. The temperature acquisition devices arranged in cold aisle A' can collect the actual temperature values ​​of each cabinet within the air supply range of front-end device A, and the temperature acquisition devices arranged in cold aisle B' can collect the actual temperature values ​​of each cabinet within the air supply range of front-end device B.

[0037] Step S102: Adjust the fan frequency and water valve opening of the front-end equipment according to the actual temperature value and the preset temperature threshold.

[0038] Specifically, the preset temperature threshold may include a preset high temperature threshold. If the actual temperature at a cabinet is higher than the high temperature threshold, meaning that the cooling demand at that cabinet is not being met, measures will be taken to increase the fan frequency and water valve opening of the front-end equipment to increase the cooling capacity of the front-end equipment and thus meet the cooling demand at that cabinet.

[0039] Based on the above, in order to reduce energy consumption, the preset temperature threshold may also include a preset low temperature threshold. If the actual temperature value of all cabinets within the air supply range of a front-end device is lower than the low temperature threshold, that is, the cooling demand of each cabinet is over-met, then measures will be taken to reduce the fan frequency and water valve opening of the front-end device to reduce the cooling capacity and workload of the front-end device, thereby reducing energy consumption.

[0040] Regarding the control section for the cold source equipment, it should be noted that a cooling system can include at least one cold source device. That is, a cold source device, several front-end devices using that cold source device as the cold source, and the water supply pipes for connection can constitute a cooling subsystem, and multiple cooling subsystems constitute a cooling system. Based on the above, the same control method can be used for different cold source devices. The control process for a cold source device can include the following steps:

[0041] Step S103: Obtain the actual water valve opening degree of each front-end device that uses the aforementioned cold source device as the cold source.

[0042] Among them, the actual water valve opening is a working state of the front-end equipment. The working state of the front-end equipment can also be represented by the actual fan frequency. The working state of each front-end equipment can be obtained by establishing a communication protocol with the front-end equipment. The actual water valve opening can, to a certain extent, characterize the workload of the front-end equipment under the current conditions, and thus characterize the cooling demand of each cabinet under the current conditions.

[0043] Step S104: Adjust the cooling capacity of the cold source equipment according to the actual water valve opening degree and the preset opening degree threshold.

[0044] Specifically, the preset opening threshold may include a preset high-opening threshold for water valves. If the actual opening of a front-end device's water valve is higher than the high-opening threshold, the cooling output of the front-end device is higher. In other words, the cooling demand of each cabinet within the air supply range of the front-end device is greater, and measures to increase the cooling output of the cold source equipment are tended to be taken to provide more cooling to the front-end device.

[0045] Based on the above, in order to reduce energy consumption, the preset opening threshold may also include a preset low-opening threshold for water valves. If the actual opening degree of the water valves of each front-end device using a cold source device as the cold source is lower than the low-opening threshold for water valves, the cooling capacity of each front-end device is relatively small. In other words, the cooling demand of each cabinet at each front-end device is relatively small, so measures are tended to be taken to reduce the cooling capacity of the cold source device in order to reduce energy consumption.

[0046] The aforementioned data center cooling control method, when controlling front-end equipment, such as precision air conditioners, uses the actual temperature of each rack within its air supply range as the control basis. It eliminates the need to wait for temperature changes at the racks to trigger temperature changes at the front-end equipment before controlling it. Compared to current solutions that use the temperature at the equipment's installation location as the control basis, this solution uses data that more accurately reflects the data center's temperature situation, shortening the response time and improving the accuracy of front-end equipment control. When controlling the cooling source equipment, it uses the actual water valve opening degree of the front-end equipment as the control basis. Specifically… An excessively high actual water valve opening indicates that the current front-end equipment is operating under high load, thus indicating a high demand for cooling capacity and requiring an increase in the cooling capacity supplied by the cold source equipment. Conversely, an excessively low actual water valve opening indicates that the front-end equipment is operating under low load, thus indicating a lower demand for cooling capacity and allowing a reduction in the cooling capacity supplied by the cold source equipment. By using the actual water valve opening of the front-end equipment to measure its cooling demand and then controlling the cooling capacity of the cold source equipment, the response time for cold source equipment control can be shortened, preventing excessively high or low data center temperatures caused by control lag and improving the accuracy of cold source equipment control.

[0047] Furthermore, compared to cooling control schemes that aim to meet the cooling demand of the most unfavorable point in the entire data center, this scheme can improve the accuracy of control by independently controlling each front-end device and cooling source device. The parameters used in this application scheme are all parameters that can be actually observed in actual operation, such as temperature values ​​and water valve opening values. Compared with PID control algorithms, this scheme does not require highly complex parameter calibration and is more practical.

[0048] The specific implementation methods of the front-end equipment control section and the cold source equipment control section are described below.

[0049] Figure 3 A schematic diagram illustrating the process of controlling a front-end device is provided, showing one implementation of step S102. Combined with... Figure 3 As shown, step S102 above, adjusting the fan frequency and water valve opening of the front-end equipment according to the actual temperature value and the preset temperature threshold, may include:

[0050] Step S301: Mark all cabinets with actual temperatures higher than the preset high temperature threshold as high temperature points.

[0051] Specifically, a baseline value T0 and a temperature deviation band T1 for the cabinet temperature can be predefined. The preset high temperature threshold is T0+T1, and the corresponding preset low temperature threshold is T0-T1.

[0052] Step S302: Determine whether there is a high-temperature point. If so, execute Step S303; if not, execute Step S304.

[0053] Step S303: Increase the fan frequency and water valve opening degree of the front-end device.

[0054] Step S304: Mark all cabinets with actual temperature values lower than the preset low-temperature threshold as low-temperature points.

[0055] Step S305: Determine whether there is a low-temperature point. If so, execute Step S306; if not, execute Step S307.

[0056] Step S306: Decrease the fan frequency and water valve opening degree of the front-end device.

[0057] Step S307: Mark the cabinets according to the actual temperature values and the preset reference temperature.

[0058] Specifically, mark all cabinets with actual temperature values higher than the preset reference temperature as sub-high-temperature points, and mark all cabinets with actual temperature values lower than the reference temperature as sub-low-temperature points.

[0059] Step S308: Judge the number CG of marked sub-high-temperature points and the number CD of sub-low-temperature points. If CG < CD, execute Step S309; if CG > CD, execute Step S310.

[0060] Step S309: Decrease the water valve opening degree of the front-end device.

[0061] Step S310: Increase the water valve opening degree of the front-end device.

[0062] It should be noted that when controlling the cooling of the data center, the primary control objective is to meet the cooling demand of the data center, and the secondary objective is to reduce the working energy consumption of the cooling system. Based on this, first judge whether there is a high-temperature point. If there is no high-temperature point, then judge whether there is a low-temperature point. If there are neither high-temperature points nor low-temperature points, it means that all cabinets within the air supply range of the front-end device are within a relatively optimal temperature range, but not necessarily the reference temperature, that is, the reference value T0 of the actual temperature of the above cabinets. Then, the sub-high-temperature points and sub-low-temperature points can be calibrated for each cabinet by comparing the numerical sizes of the actual temperature value and the reference temperature. The control direction is determined by the marked type with a larger number, and the cooling control is carried out with the goal of making the actual temperature values of all cabinets in the data center approach the reference temperature.

[0063] In a possible implementation manner, the above Step S303, Increase the fan frequency and water valve opening degree of the front-end device, may include:

[0064] Step S01: Determine whether the water valve of the front-end device is always in the over-open state within the first preset time. If yes, proceed to step S02; otherwise, proceed to step S03.

[0065] The ultra-high opening state can be used to characterize that the actual water valve opening of the front-end device is greater than the preset ultra-high opening threshold of the water valve.

[0066] Step S02: Increase the fan frequency of the front-end equipment.

[0067] Step S03: Increase the opening degree of the water valve of the front-end device.

[0068] Similarly, step S306 above, reducing the fan frequency and water valve opening of the front-end equipment, may include:

[0069] Step S11: Determine whether the fan of the front-end device is operating in an ultra-low open state. If yes, proceed to step S12; otherwise, proceed to step S13.

[0070] The ultra-low operating state can be used to indicate that the actual fan frequency of the front-end device is less than a preset ultra-low operating threshold for the fan.

[0071] Step S12: Reduce the opening degree of the water valve of the front-end device.

[0072] Step S13: Reduce the fan frequency of the front-end equipment.

[0073] It should be noted that adjusting the water valve opening and fan frequency of the front-end equipment in the same direction can achieve the same control effect. However, adjusting both the water valve opening and fan frequency simultaneously may lead to uncontrollable adjustments. Therefore, when adjusting the cooling capacity of the front-end equipment, only one control object should be adjusted at a time. If you want to increase the cooling capacity of the front-end equipment, prioritize adjusting the water valve opening if it is adjustable. If you want to decrease the cooling capacity of the front-end equipment, prioritize adjusting the fan frequency if it is adjustable. This is because the energy consumption of the water valve is much lower than that of the fan. Specifically, when you want to increase the cooling capacity of the front-end equipment, increasing the water valve opening and increasing the fan frequency can achieve the same effect, but the power consumption caused by adjusting the water valve is much less than the power consumption caused by adjusting the fan. Therefore, to reduce power consumption and save energy, you can prioritize increasing the cooling capacity of the front-end equipment by increasing the water valve opening and prioritize decreasing the cooling capacity of the front-end equipment by decreasing the fan frequency.

[0074] The adjustment range of the controlled object adjusted in each control is explained below. In one possible implementation, the actual adjustment range h = n*i. For parameter n, when there are high-temperature points, parameter n is the number of high-temperature points; when there are low-temperature points, parameter n is the number of low-temperature points. For parameter i, which represents the preset minimum adjustment range, when the controlled object is the fan frequency, parameter i is the minimum adjustment range of the fan frequency; when the controlled object is the water valve opening, parameter i is the minimum adjustment range of the water valve opening.

[0075] Specifically, for cases where there are no high-temperature and low-temperature points, the parameter n can be set to a constant less than 1 and greater than 0. This means the actual adjustment range h is set less than the preset minimum adjustment range of the water valve opening, thus achieving fine-tuning of the water valve opening. Furthermore, the value of parameter n can also be set based on the difference between the number of secondary high-temperature points and the number of secondary low-temperature points; specifically, the larger the absolute value of the difference, the closer parameter n is to 1.

[0076] Based on the above, a step-by-step algorithm can be used to periodically control the cooling operation of the data center. Specifically, after performing a cooling control operation of the data center according to the above control method, after a certain delay, the front-end equipment and cold source equipment are re-evaluated and adjusted. The steps of the above control method are repeated continuously to achieve gradual adjustment of the cooling capacity, avoiding system oscillation caused by abnormal individual parameters. The step-by-step control process can ensure that the cooling system has sufficient time to reach a steady state, reducing system oscillation. For example, the abnormal individual parameters may refer to parameter loss due to a malfunction of the temperature acquisition device involved in the control.

[0077] Specifically, the cycle of cooling control, that is, the time interval between two cooling control operations, can be called the step duration. The step duration can be determined based on the outdoor temperature, which can be temperature data collected by a temperature acquisition device deployed outdoors. Specifically, the higher the outdoor temperature, the greater the heat radiation from the outside to the inside, and the greater the impact of the outdoor temperature on the actual temperature value of the server rack, making it easier for the data center temperature to become too high. Based on this, the step duration can be reduced as the outdoor temperature increases to improve the sensitivity of the control.

[0078] The following describes the control section of the cold source equipment, which may include a chiller, a water pump, and water supply pipes for connection.

[0079] Figure 4 A schematic diagram illustrating the process of controlling a cold source device is provided, showing one implementation of step S104. Combined with... Figure 4As shown, step S104 above, adjusting the cooling capacity of the cold source equipment according to the actual water valve opening degree and the preset opening threshold, may include:

[0080] Step S401: Mark the front-end equipment according to the actual water valve opening.

[0081] Specifically, front-end devices with actual water valve openings greater than the preset high-opening threshold are marked as high-opening devices, and front-end devices with actual water valve openings less than the preset low-opening threshold are marked as low-opening devices. It should be noted that the high-opening threshold is less than the ultra-high-opening threshold, and the low-opening threshold is greater than the ultra-low-opening threshold. The ultra-high and ultra-low opening thresholds are limiting conditions for the water valve's operating capacity, defining its optimal operating state. Correspondingly, the aforementioned ultra-low opening threshold represents the minimum fan frequency value required to ensure the normal operation of the cooling system.

[0082] Step S402: Calculate the difference between the number of marked high-opening devices and the number of marked low-opening devices to obtain the first difference.

[0083] Step S403: Determine the first difference. If the first difference is greater than zero, proceed to step S404. If the first difference is less than zero, proceed to step S405.

[0084] Step S404: Increase the frequency of the water pump in the cold source system.

[0085] Step S405: Reduce the frequency of the water pump in the cold source system.

[0086] For example, when the actual water valve opening SC of the front-end device is greater than 70%, the front-end device can be marked as a high-opening device. When the actual water valve opening SC of the front-end device is less than 30%, the front-end device can be marked as a low-opening device. Then, the difference between the number of high-opening devices GK and the number of low-opening devices DK is calculated to obtain the first difference M1. When M1 > 0, the water pump frequency of the cold source system is increased. When M1 < 0, the water pump frequency of the cold source system is decreased. Assuming that the minimum adjustment frequency of the water pump is F, the increase or decrease is |M1|*F. The relevant explanations of the adjustment range and step duration can be found above.

[0087] In addition to adjusting the pump frequency of the cooling source system, the control process of the cooling source system can also control the number of pumps in operation, the number of chillers in operation, and the chiller supply water temperature, in order to adjust the cooling capacity of the cooling source system. The control process for the above-mentioned controlled objects will be described below.

[0088] In some embodiments provided in this application, the control method may further include:

[0089] Step S21: If the actual pump frequency of the cold source system is always greater than the preset high-operation threshold for the pump within the second preset time period, then at least one additional pump is started, using the actual pump frequency of the cold source system as the frequency.

[0090] Step S22: If the actual pump frequency of the cold source system is always less than the preset low pump threshold within the third preset time period, then after stopping one pump, if the number of pumps in operation in the cold source equipment meets the preset minimum number of operating pumps, then one pump is stopped.

[0091] The second preset time is shorter than the third preset time to ensure that the pump shutdown mechanism is more difficult to trigger than the activation mechanism, thus guaranteeing the supply of cooling capacity. Furthermore, the pump frequency control and start / stop control are performed independently, and priority is given to increasing the cooling capacity of the cold source equipment by adding more pumps to achieve energy conservation and consumption reduction.

[0092] For example, if the pump frequency is greater than 70% for more than the second preset time, one more pump is turned on, and all the pumps turned on have the same operating frequency; if the pump frequency is greater than 90% for more than the second preset time, two more pumps are turned on; if the pump frequency is less than 30% for more than the third preset time, one pump is turned off.

[0093] It should be noted that during the start-up and shutdown control of the water pumps, the preset minimum and maximum number of operating water pumps must be met to satisfy the operating needs of the cooling system. The minimum number of operating pumps can be set according to the cooling load at the front end. Specifically, the cooling load can be the cooling capacity requirement of the front-end equipment calculated based on the supply and return water flow rates and the supply and return water temperature difference. The minimum number of operating water pumps can be determined by comparing the cooling capacity requirement of the front-end equipment with the cooling capacity of the chiller.

[0094] In some embodiments provided in this application, the control method may further include:

[0095] Step S31: If the water supply of the cooling system does not meet the water demand, then add another chiller.

[0096] Figure 5 A schematic diagram of a data center cooling system is provided. Figure 5 As shown, the cooling system includes front-end equipment A1, A2, A3, and A4; secondary pumps E2-1 and E2-2; chillers B1, B2, and B3; primary pumps E1-1, E1-2, and E1-3; flow meters I-1, I-2, I-3, I-4, and I-5; and cold storage pipes. All equipment is connected by water supply pipes, with the water flow direction as shown. Figure 5 As indicated by the arrows in the diagram. It should be noted that the water pumps controlled in this scheme are all... Figure 5 The secondary pump in the middle.

[0097] Specifically, in combination Figure 5 As shown, the comparison between the actual flow rate measured by the flow meter at the inlet of the cold storage tank and a preset forward flow threshold can determine whether the water demand is met. If the actual flow rate measured by the forward and reverse flow sensors at the inlet of the cold storage tank remains lower than the forward flow threshold for a period of time, it can be determined that the current situation does not meet the water demand. Furthermore, the flow meter can be a forward and reverse flow meter, which can also be used to output an alarm signal during cooling.

[0098] Step S32: If the load of the chiller unit is always less than the preset minimum operating load within the fourth preset time, then after shutting down one chiller, if the number of chillers in operation in the cold source equipment meets the preset minimum number of operating chillers, then shut down one chiller. The chiller unit is a unit composed of several operating chillers.

[0099] For example, if the load of a chiller unit remains below 40% for more than the fourth preset time, then one chiller unit is shut down.

[0100] It should be noted that during the start-up and shutdown control of the chillers, the preset minimum and maximum number of chillers in operation must be met to satisfy the operational needs of the cooling system.

[0101] In some embodiments provided in this application, the control method may further include:

[0102] If all chillers in the cooling system are in operation and the load of the chiller units is greater than the preset maximum operating load, then the water supply temperature of the chiller units will be reduced within the preset temperature range; otherwise, the water supply temperature of the chiller units will be increased within the preset temperature range.

[0103] It should be noted that the "all chillers" mentioned above refers to all main chillers. For example, if the chiller unit's load is greater than 90%, the chiller's supply water temperature setpoint will be reduced by 1 degree Celsius.

[0104] It should be noted that the control of the front-end equipment and the control of the cold source equipment are carried out independently. In order to reduce the computational burden and avoid system oscillation caused by adjusting two objects at the same time, different start times and step durations can be set for the control of the front-end equipment and the control of the cold source equipment.

[0105] Based on the above, the control method may further include:

[0106] Step S41: Use the artificial intelligence control system to obtain the operating status of the data center cooling system and the control commands output to the data center cooling system for learning.

[0107] Step S42: Using the learned artificial intelligence control system, determine the cycle of executing cooling control operations, the controlled object, and the direction and magnitude of adjustment to the controlled object, so as to perform cooling control on the data center.

[0108] The artificial intelligence (AI) control system can acquire operational status data of the cooling system and output control commands to the cooling system during the aforementioned cooling control process by establishing communication protocols with front-end devices and cooling source devices. The operational status data may include fan frequency and water valve opening of the front-end devices, and water pump frequency, number of pumps in operation, number of chillers in operation, and chiller supply water temperature of the cooling source devices. By establishing a communication protocol with temperature acquisition devices deployed at the server racks, the actual temperature value of the server racks can be obtained. During the learning process from the above data, the AI ​​control system can gradually learn control methods for controlled objects such as water valve opening, fan frequency, and water pump frequency, as well as methods for configuring step time. Using the learned AI control system to perform cooling control of the data center can improve the level of intelligence in cooling control.

[0109] In addition, if the artificial intelligence control system malfunctions and is unable to output control commands, the cooling system's self-holding function can be used to ensure the normal operation of the cooling system by operating according to the previous control commands even if no next control command is received, thus providing time for system maintenance.

[0110] The data center cooling control device provided in the embodiments of this application is described below. The data center cooling control device described below can be referred to in correspondence with the data center cooling control method described above.

[0111] Figure 6 This is a schematic diagram of a data center cooling control device disclosed in an embodiment of this application. The device can be applied to a data center cooling system, which may include at least one cold source device, several front-end devices using the cold source device as the cold source, and water supply pipes connecting the cold source device and the front-end devices, such as... Figure 6 As shown, the device may include:

[0112] The front-end device control unit 11 is used to acquire the actual temperature value of each cabinet within the air supply range of each front-end device, and adjust the fan frequency and water valve opening of the front-end device according to the actual temperature value and a preset temperature threshold.

[0113] The cold source equipment control unit 12 is used to obtain the actual water valve opening degree of each front-end device that uses the cold source equipment as a cold source for each of the cold source equipments, and adjust the cooling capacity of the cold source equipment according to the actual water valve opening degree and the preset opening degree threshold.

[0114] In some embodiments provided in this application, the process by which the front-end device control unit 11 adjusts the fan frequency and water valve opening of the front-end device according to the actual temperature value and a preset temperature threshold may include:

[0115] Cabinets with actual temperatures exceeding the preset high-temperature threshold are marked as high-temperature points;

[0116] In the presence of the aforementioned high temperature point, increase the fan frequency and water valve opening of the front-end equipment;

[0117] In the absence of the aforementioned high-temperature points, all cabinets with actual temperature values ​​below the preset low-temperature threshold are marked as low-temperature points;

[0118] In the presence of the aforementioned low temperature point, reduce the fan frequency and water valve opening of the front-end equipment;

[0119] In the absence of the aforementioned low temperature point, all cabinets with actual temperature values ​​higher than the preset reference temperature are marked as the second highest temperature point, and all cabinets with actual temperature values ​​lower than the reference temperature are marked as the second lowest temperature point.

[0120] If the number of marked second-highest temperature points is less than the number of marked second-lowest temperature points, reduce the opening of the water valve of the front-end device; if the number of marked second-highest temperature points is greater than the number of marked second-lowest temperature points, increase the opening of the water valve of the front-end device.

[0121] In one possible implementation, the process by which the front-end device control unit increases the fan frequency and water valve opening of the front-end device may include:

[0122] If the water valve of the front-end device is always in the ultra-high open state within a first preset time, the fan frequency of the front-end device is increased; otherwise, the water valve opening of the front-end device is increased. The ultra-high open state is used to indicate that the actual water valve opening of the front-end device is greater than the preset ultra-high open threshold.

[0123] In one possible implementation, the process by which the front-end device control unit reduces the fan frequency and water valve opening of the front-end device may include:

[0124] If the fan of the front-end device is operating in an ultra-low opening state, the opening degree of the water valve of the front-end device shall be reduced; otherwise, the fan frequency of the front-end device shall be reduced. The ultra-low opening state is used to indicate that the actual fan frequency of the front-end device is less than a preset ultra-low opening threshold.

[0125] In some embodiments provided in this application, when there are high-temperature points, the increase in the fan frequency and water valve opening of the front-end equipment is the product of a preset minimum adjustment range and the number of high-temperature points, wherein the minimum adjustment range includes the minimum adjustment range of the water valve opening or the minimum adjustment range of the fan frequency.

[0126] In the presence of low-temperature points, the reduction in the fan frequency and water valve opening of the front-end equipment is the product of the minimum adjustment range and the number of low-temperature points.

[0127] In the absence of high-temperature and low-temperature points, the increase or decrease in the water valve opening of the front-end equipment is the product of the minimum adjustment range of the water valve opening and the difference between the number of the second-highest and second-lowest temperatures.

[0128] In some embodiments provided in this application, the cold source equipment may include a chiller, a water pump, and a water supply pipe for connection.

[0129] Based on the above, the process by which the cold source equipment control unit 12 adjusts the cooling capacity of the cold source equipment according to the actual water valve opening degree and the preset opening degree threshold may include:

[0130] Front-end devices with actual water valve openings greater than the preset high-opening threshold are marked as high-opening devices;

[0131] Front-end devices with actual water valve opening degrees lower than the preset low-opening threshold are marked as low-opening devices;

[0132] Calculate the difference between the number of marked high-opening devices and the number of marked low-opening devices to obtain the first difference;

[0133] If the first difference is greater than zero, increase the pump frequency of the cold source system;

[0134] If the first difference is less than zero, reduce the pump frequency of the cold source system.

[0135] In some embodiments provided in this application, the cold source equipment control unit 12 can also be used to control the start and stop of the water pump. Specifically, if the actual water pump frequency of the cold source system is always greater than the preset water pump high-start threshold within a second preset time, then at least one water pump is added based on the actual water pump frequency of the cold source system.

[0136] If the actual pump frequency of the cold source system is always less than the preset low pump operating threshold within the third preset time period, then after shutting down one pump, if the number of pumps in operation in the cold source equipment meets the preset minimum number of operating pumps, one pump will be shut down.

[0137] In some embodiments provided in this application, the cold source equipment control unit 12 can also be used to control the start and stop of the chiller. Specifically, if the water supply of the cooling system does not meet the water demand, an additional chiller will be turned on.

[0138] If the load of the chiller unit is always less than the preset minimum operating load within the fourth preset time period, then after shutting down one chiller, if the number of chillers in operation in the cold source equipment meets the preset minimum number of operating chillers, then one chiller will be shut down. The chiller unit is a unit composed of several operating chillers.

[0139] In some embodiments provided in this application, the cold source equipment control unit 12 can also be used to control the water supply temperature of the chiller unit. Specifically, if all the chillers in the cooling system are in operation and the load of the chiller unit is greater than the preset maximum operating load, the water supply temperature of the chiller unit is reduced within the preset temperature range; otherwise, the water supply temperature of the chiller unit is increased within the preset temperature range.

[0140] In some embodiments provided in this application, the device may further include a control cycle control unit for acquiring the outdoor temperature and determining the step duration based on the outdoor temperature, so that the front-end device control unit and the cold source device control unit can periodically control the cooling of the data center according to the step duration.

[0141] In some embodiments provided in this application, the device may further include an artificial intelligence control system learning unit, used to acquire the operating status of the data center cooling system and the control commands output to the data center cooling system, so as to learn the artificial intelligence control system. The learned artificial intelligence control system can be used to determine the cycle of executing cooling control operations, the controlled object, the direction and magnitude of adjustment to the controlled object, and to perform cooling control on the data center.

[0142] The data center cooling control device provided in this application embodiment can be applied to data center cooling control equipment, such as terminals like mobile phones and computers. This device can be applied to a data center cooling system, which includes at least one cold source device, several front-end devices using the cold source device as the cold source, and water supply pipes connecting the cold source device and the front-end devices. Optionally, Figure 7The hardware structure block diagram of the data center cooling control equipment is shown. Figure 7 The hardware structure of a data center cooling control device may include: at least one processor 1, at least one communication interface 2, at least one memory 3, and at least one communication bus 4;

[0143] In this embodiment of the application, the number of processor 1, communication interface 2, memory 3, and communication bus 4 is at least one, and processor 1, communication interface 2, and memory 3 communicate with each other through communication bus 4;

[0144] Processor 1 may be a central processing unit (CPU), an application-specific integrated circuit (ASIC), or one or more integrated circuits configured to implement embodiments of the present invention.

[0145] Memory 3 may include high-speed RAM, and may also include non-volatile memory, such as at least one disk storage device;

[0146] The memory stores a program, which the processor can call. The program is used for:

[0147] For each of the aforementioned front-end devices, the actual temperature value of each cabinet within the air supply range of the front-end device is obtained, and the fan frequency and water valve opening of the front-end device are adjusted according to the actual temperature value and the preset temperature threshold.

[0148] For each of the aforementioned cold source devices, the actual water valve opening degree of each front-end device using the aforementioned cold source device as the cold source is obtained, and the cooling capacity of the cold source device is adjusted according to the actual water valve opening degree and the preset opening threshold.

[0149] Optionally, the refined and extended functions of the program can be found in the description above.

[0150] This application also provides a data center cooling control system. Figure 8 This is a schematic diagram of the structure of a data center cooling control system according to an embodiment of this application, combined with... Figure 8 As shown, the control system may include a data center cooling system 801, a temperature acquisition device 802, and a data center cooling control device 803 as described above.

[0151] The data center cooling system may include at least one cold source device, a plurality of front-end devices using the cold source device as a cold source, and water supply pipes connecting the cold source device and the front-end devices.

[0152] The temperature acquisition device is installed in the server racks of the data center to collect the actual temperature value of the server racks.

[0153] The data center control equipment can use the actual temperature value collected by the temperature acquisition device and the operating status data of the front-end equipment and cold source equipment obtained from the data center cooling system to output control commands to the data center cooling system, thereby realizing the task of cooling control of the data center.

[0154] Optionally, the detailed and extended functions of the data center cooling control equipment can be referred to the above description.

[0155] Finally, it should be noted that in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0156] The various embodiments in this specification are described in a progressive manner. Each embodiment focuses on the differences from other embodiments. The various embodiments can be combined as needed, and the same or similar parts can be referred to each other.

[0157] The above description of the disclosed embodiments enables those skilled in the art to make or use this application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of this application. Therefore, this application is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A data center cooling control method, characterized in that, An application in a data center cooling system, the data center cooling system including at least one cold source device, a plurality of front-end devices using the cold source device as a cold source, and water supply pipes connecting the cold source device and the front-end devices, the method comprising: For each of the aforementioned front-end devices, the actual temperature value of each cabinet within the air supply range of the front-end device is obtained, and the fan frequency and water valve opening of the front-end device are adjusted according to the actual temperature value and the preset temperature threshold. For each of the aforementioned cold source devices, the actual water valve opening degree of each front-end device using the cold source device as the cold source is obtained, and the cooling capacity of the cold source device is adjusted according to the actual water valve opening degree and the preset opening threshold. The step of adjusting the fan frequency and water valve opening of the front-end equipment according to the actual temperature value and the preset temperature threshold includes: Cabinets with actual temperatures exceeding the preset high-temperature threshold are marked as high-temperature points; In the presence of the aforementioned high temperature point, increase the fan frequency and water valve opening of the front-end equipment; In the absence of the aforementioned high-temperature points, all cabinets with actual temperature values ​​below the preset low-temperature threshold are marked as low-temperature points; In the presence of the aforementioned low temperature point, reduce the fan frequency and water valve opening of the front-end equipment; In the absence of the aforementioned low temperature point, all cabinets with actual temperature values ​​higher than the preset reference temperature are marked as the second highest temperature point, and all cabinets with actual temperature values ​​lower than the reference temperature are marked as the second lowest temperature point. If the number of marked second-highest temperature points is less than the number of marked second-lowest temperature points, reduce the opening of the water valve of the front-end device; if the number of marked second-highest temperature points is greater than the number of marked second-lowest temperature points, increase the opening of the water valve of the front-end device.

2. The method according to claim 1, characterized in that, Increasing the fan frequency and water valve opening of the front-end equipment includes: If the water valve of the front-end device is always in the ultra-high open state within a first preset time, the fan frequency of the front-end device is increased; otherwise, the water valve opening of the front-end device is increased. The ultra-high open state is used to indicate that the actual water valve opening of the front-end device is greater than the preset ultra-high open threshold. The reduction of the fan frequency and water valve opening of the front-end equipment includes: If the fan of the front-end device is operating in an ultra-low opening state, the opening degree of the water valve of the front-end device shall be reduced; otherwise, the fan frequency of the front-end device shall be reduced. The ultra-low opening state is used to indicate that the actual fan frequency of the front-end device is less than a preset ultra-low opening threshold.

3. The method according to claim 1, characterized in that, In the presence of high-temperature points, the increase in the fan frequency and water valve opening of the front-end equipment is the product of the preset minimum adjustment range and the number of high-temperature points, wherein the minimum adjustment range includes the minimum adjustment range of the water valve opening or the minimum adjustment range of the fan frequency. In the presence of low-temperature points, the reduction in the fan frequency and water valve opening of the front-end equipment is the product of the minimum adjustment range and the number of low-temperature points.

4. The method according to claim 1, characterized in that, The cooling source equipment includes a chiller, a water pump, and a water supply pipeline for connection; The step of adjusting the cooling capacity of the cold source equipment based on the actual water valve opening degree and the preset opening threshold includes: Front-end devices with actual water valve opening degrees greater than the preset high-opening threshold are marked as high-opening devices; Front-end devices with actual water valve opening degrees lower than the preset low-opening threshold are marked as low-opening devices; Calculate the difference between the number of marked high-opening devices and the number of marked low-opening devices to obtain the first difference; If the first difference is greater than zero, increase the water pump frequency of the cold source equipment; If the first difference is less than zero, reduce the water pump frequency of the cold source equipment.

5. The method according to claim 4, characterized in that, The method also includes: If the actual pump frequency of the cold source equipment is always greater than the preset high-opening threshold for the pump within the second preset time period, then at least one additional pump will be opened based on the actual pump frequency of the cold source equipment. If the actual pump frequency of the cold source equipment is always less than the preset low-operation threshold for the pump within the third preset time period, then after shutting down one pump, if the number of pumps in operation in the cold source equipment meets the preset minimum number of operating pumps, one pump will be shut down.

6. The method according to claim 4, characterized in that, The method also includes: If the water supply of the cooling system does not meet the water demand, then an additional chiller will be added. If the load of the chiller unit is always less than the preset minimum operating load within the fourth preset time period, then after shutting down one chiller, if the number of chillers in operation in the cold source equipment meets the preset minimum number of operating chillers, then one chiller will be shut down. The chiller unit is a unit composed of several operating chillers.

7. The method according to claim 6, characterized in that, The method also includes: If all chillers in the cooling system are in operation and the load of the chiller units is greater than the preset maximum operating load, then the water supply temperature of the chiller units will be reduced within the preset temperature range; otherwise, the water supply temperature of the chiller units will be increased within the preset temperature range.

8. The method according to any one of claims 1-7, characterized in that, The method also includes: Obtain the outdoor temperature; The step duration is determined based on the outdoor temperature. The cooling control of the data center is periodically performed according to the stated step duration.

9. The method according to any one of claims 1-7, characterized in that, The method also includes: The system utilizes an artificial intelligence control system to acquire the operating status of the data center cooling system and the control commands output to the data center cooling system for learning purposes. The learned artificial intelligence control system determines the cycle of executing cooling control operations, the controlled object, and the direction and magnitude of adjustment to the controlled object in order to perform cooling control on the data center.

10. A data center cooling control device, characterized in that, An application in a data center cooling system, the data center cooling system including at least one cold source device, a plurality of front-end devices using the cold source device as a cold source, and water supply pipes connecting the cold source device and the front-end devices, the device comprising: The front-end equipment control unit is used to obtain the actual temperature value of each cabinet within the air supply range of each front-end equipment, and adjust the fan frequency and water valve opening of the front-end equipment according to the actual temperature value and a preset temperature threshold. The cold source equipment control unit is used to obtain the actual water valve opening degree of each front-end device that uses the cold source equipment as a cold source for each cold source equipment, and adjust the cooling capacity of the cold source equipment according to the actual water valve opening degree and the preset opening degree threshold. The process by which the front-end equipment control unit adjusts the fan frequency and water valve opening of the front-end equipment according to the actual temperature value and a preset temperature threshold includes: Cabinets with actual temperatures exceeding the preset high-temperature threshold are marked as high-temperature points; In the presence of the aforementioned high temperature point, increase the fan frequency and water valve opening of the front-end equipment; In the absence of the aforementioned high-temperature points, all cabinets with actual temperature values ​​below the preset low-temperature threshold are marked as low-temperature points; In the presence of the aforementioned low temperature point, reduce the fan frequency and water valve opening of the front-end equipment; In the absence of the aforementioned low temperature point, all cabinets with actual temperature values ​​higher than the preset reference temperature are marked as the second highest temperature point, and all cabinets with actual temperature values ​​lower than the reference temperature are marked as the second lowest temperature point. If the number of marked second-highest temperature points is less than the number of marked second-lowest temperature points, reduce the opening of the water valve of the front-end device; if the number of marked second-highest temperature points is greater than the number of marked second-lowest temperature points, increase the opening of the water valve of the front-end device.

11. A data center cooling control device, characterized in that, include: Memory and processor; The memory is used to store programs; The processor is used to execute the program to implement each step of the data center cooling control method as described in any one of claims 1-9.

12. A data center cooling control system, characterized in that, Includes a data center cooling system, a temperature acquisition device, and the data center cooling control equipment as described in claim 11; The data center cooling system includes at least one cold source device, several front-end devices using the cold source device as the cold source, and water supply pipes connecting the cold source device and the front-end devices. The temperature acquisition device is installed in the server racks of the data center to collect the actual temperature values ​​of the server racks.

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