A machine room air conditioner group control method based on power consumption dynamic tracking

Abstract

The application discloses a kind of based on power consumption dynamic tracking's computer lab air conditioning group control method, comprising the following steps: S1: statistics cabinet module and air conditioning unit information, set the opening priority of air conditioning unit corresponding to cabinet module;S2: calculate the maximum air conditioning unit quantity under the rated power consumption of cabinet module;S3: real-time detection and sorting cabinet module actual power consumption, calculate actual total power consumption;S4: calculate actual air conditioning unit quantity based on cabinet module actual total power consumption;S5: based on cabinet module quantity, actual air conditioning unit quantity and maximum air conditioning unit quantity adjust air conditioning unit switch order and state.The beneficial effects of the present application are: can be based on the best load efficiency of air conditioning unit and carry out group control, and the opening position of air conditioning unit is always closest to the maximum power consumption area of equipment.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of air conditioning group control, and particularly relates to a machine room air conditioner group control method based on power consumption dynamic tracking. BACKGROUND

[0002] Air conditioner group control connects all controllable devices to the central control center through the network, masters various data in operation through various sensing elements placed in the space, air conditioning equipment and pipeline, and then makes judgments and control operations on each component according to scientific control strategies, so that each component cooperates consistently, and better energy saving and environmental control means are achieved.

[0003] In the prior art, the temperature distribution control air conditioning unit based on the temperature field needs to arrange a large number of temperature sensors, which increases the complexity of the system; each air conditioning unit load is a temperature control area, and the opening sequence of the corresponding air conditioning unit is adjusted according to the temperature change of the temperature sensor of the temperature control area, and it is difficult to form a one-to-one correspondence between the temperature control area and the air conditioning unit in the closed air conditioning unit. The stability and service life of the air conditioning unit are reduced. There is a problem that group control cannot be based on the best load efficiency of the air conditioning unit.

[0004] For example, a kind of "air conditioning unit and the control method of air conditioning unit" disclosed in Chinese patent document, its announcement number: CN115265022A, its application date: August 10, 2022, the invention provides an air conditioning unit and the control method of air conditioning unit, the air conditioning unit includes refrigeration circuit, the refrigeration circuit includes main refrigerant pipeline and is sequentially connected through the main refrigerant pipeline Compressor, first heat exchanger, first throttling device and second heat exchanger, the air conditioning unit includes air charging part, the air charging part is configured to fill inert gas into the refrigeration circuit, which is beneficial to solve the storage problem of refrigerant in the shutdown state of the air conditioning unit, and is beneficial to prevent air from entering the air conditioning unit to pollute the refrigerant and even cause rust corrosion, but there is a problem that group control cannot be based on the best load efficiency of the air conditioning unit. SUMMARY

[0005] In view of the deficiency that the prior art cannot perform group control based on the best load efficiency of the air conditioning unit, the present application provides a machine room air conditioner group control method based on power consumption dynamic tracking, which can perform group control based on the best load efficiency of the air conditioning unit, and the opening position of the air conditioning unit is always closest to the region with the maximum power consumption of the equipment.

[0006] The technical scheme of the present application is as follows: a machine room air conditioner group control method based on power consumption dynamic tracking, comprising the following steps:

[0007] S1: count the cabinet module and air conditioning unit information, and set the opening priority of the air conditioning unit corresponding to the cabinet module;

[0008] S2: Calculate the maximum number of air conditioning units under the rated power consumption of the computer cabinet module;

[0009] S3: Real-time detection and sorting of actual power consumption of the computer cabinet module, calculation of actual total power consumption;

[0010] S4: Calculate the actual number of air conditioning units based on the actual total power consumption of the computer cabinet module;

[0011] S5: Adjust the air conditioning unit switching sequence and state based on the number of computer cabinet modules, the actual number of air conditioning units, and the maximum number of air conditioning units.

[0012] In this scheme, the computer cabinet module and air conditioning unit information is counted, including rated refrigerating capacity and optimal load rate, etc., which is used to calculate the number of air conditioning units required by the computer cabinet module, set the opening priority of the air conditioning unit corresponding to the computer cabinet module, when the computer cabinet module needs to open the air conditioning unit, determine the specific air conditioning unit and its sequence that needs to be opened according to the opening priority of the air conditioning unit, calculate the maximum number of air conditioning units under the rated power consumption of the computer cabinet module, take the maximum number of air conditioning units as the group control judgment data, real-time detection and sorting of actual power consumption of the computer cabinet module, calculate the actual total power consumption of the computer cabinet module according to the actual power consumption of each computer cabinet module, calculate the actual number of air conditioning units based on the actual total power consumption of the computer cabinet module, adjust the air conditioning unit switching sequence and state based on the number of computer cabinet modules, the actual number of air conditioning units, and the maximum number of air conditioning units, thereby determining the number, sequence and state of the air conditioning unit that needs to be opened. It can be based on the optimal load efficiency of the air conditioning unit for group control, and the opening position of the air conditioning unit is always closest to the area with the maximum equipment power consumption.

[0013] As a preferred, in S1, the farthest computer cabinet air inlet from the air conditioning area is taken as the fixed point, and the air flow streamline distance is used to determine the opening priority of the air conditioning unit. The shorter the air flow streamline, the higher the opening priority of the air conditioning unit.

[0014] In this scheme, the opening priority of the air conditioning unit is determined according to the air flow streamline distance, the shorter the air flow streamline, the higher the opening priority of the air conditioning unit, which can make the air conditioning unit with short distance have higher priority, so that the opening position of the air conditioning unit is always closer to the area with the maximum equipment power consumption.

[0015] As a preferred, the highest opening priority air conditioning unit corresponding to different computer cabinet modules is different.

[0016] In this scheme, each computer cabinet module corresponds to at least one air conditioning unit with the highest opening priority, thereby ensuring that each computer cabinet module can be used.

[0017] As a preferred, in S2, the maximum number of air conditioning units that can be opened corresponding to each computer cabinet module is calculated as follows:

[0018]

[0019] In the above formula, r is the optimal load rate of the air conditioning unit, G is the rated refrigerating capacity of the air conditioning unit, S is the rated power consumption, and K is the number of air conditioning units that should be started under the rated power consumption of the cabinet module.

[0020] Preferably, the number of air conditioning units that should be started under the rated power consumption of the cabinet module is rounded up.

[0021] In this scheme, K is the number of air conditioning units that should be started under the rated power consumption of the cabinet module, and when H is a natural integer and H < K ≤ H + 1, K = H + 1 is taken as a natural integer. The power consumption demand of the cabinet module can be met.

[0022] Preferably, in S3, the real-time power consumption q detected by each cabinet module corresponding to the column header cabinet is calculated i , the total power consumption Q of each cabinet module in the machine room is summed up it , and the expression is as follows:

[0023]

[0024] In the above formula, Q it is the total power consumption of each cabinet module, q i is the real-time power consumption q i of each cabinet module, and M is the number of cabinet modules.

[0025] Preferably, in S4, the actual number of air conditioning units is calculated based on the actual total power consumption of the cabinet module, and the expression is as follows:

[0026]

[0027] In the above formula, r is the optimal load rate of the air conditioning unit, G is the rated refrigerating capacity of the air conditioning unit, Q it is the actual total power consumption of each cabinet module, n x indicates the total number of air conditioning units that need to be started, and x indicates the adjustment times of the air conditioning unit.

[0028] Preferably, when the adjustment times of the air conditioning unit is equal to 1, the air conditioning unit is initially started; and when the adjustment times of the air conditioning unit is greater than 1, the air conditioning unit is adjusted for the xth time.

[0029] Preferably, in S5, when the actual number of air conditioning units is greater than or equal to the maximum number of air conditioning units, all air conditioning units are started according to the maximum number of air conditioning units; when the actual number of air conditioning units is less than the maximum number of air conditioning units and less than or equal to the number of cabinet modules, the air conditioning units corresponding to the highest opening priority are sequentially started according to the power consumption of the cabinet modules from large to small; and when the actual number of air conditioning units is greater than the number of cabinet modules and less than the maximum number of air conditioning units, the air conditioning units corresponding to the highest opening priority of each cabinet module are started, and then the air conditioning units corresponding to the lower opening priority of each cabinet module are started according to the power consumption of the cabinet modules.

[0030] Preferably, when the actual number of air-conditioning units is greater than the number of cabinet modules and less than the maximum number of air-conditioning units, the switching sequence and status control steps of the air-conditioning units are as follows:

[0031] S31: Determine whether the air conditioning unit with the highest priority corresponding to each cabinet module is turned on. If it is turned on, proceed to step S32; if not, turn on the air conditioning unit with the highest priority of each module;

[0032] S32: Determine whether the air-conditioning unit with the next highest priority corresponding to the cabinet module with the highest power consumption is turned on. If so, proceed to step S32 based on whether the air-conditioning unit with the next highest priority corresponding to the cabinet module with the next highest power consumption is turned on.

[0033] If it is not turned on, turn on this air-conditioning unit and determine whether the number of turned-on air-conditioning units reaches the actual number of air-conditioning units. If it reaches the actual number of air-conditioning units, this round of adjustment ends. If it does not reach the actual number of air-conditioning units, step S32 is performed based on whether the cabinet module with the second highest power consumption corresponds to the air-conditioning unit with the next highest priority.

[0034] The beneficial effects of the present invention are: group control can be performed based on the optimal load efficiency of the air-conditioning unit, the opening position of the air-conditioning unit is always closest to the area with the maximum power consumption of the equipment, and is automatically adjusted as the power consumption distribution changes. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] Figure 1 The present invention provides a flow chart of a computer room air conditioning group control method based on dynamic power consumption tracking.

[0036] Figure 2 A schematic diagram of computer room equipment of a computer room air conditioner group control method based on dynamic power consumption tracking of the present invention. DETAILED DESCRIPTION

[0037] The technical solution of the present invention will be further specifically described below through embodiments and in conjunction with the accompanying drawings.

[0038] Example 1:

[0039] like Figure 1 As shown, a method for group control of computer room air conditioners based on dynamic power consumption tracking includes the following steps:

[0040] S1: Collects cabinet module and air conditioning unit information and sets the startup priority of the air conditioning unit corresponding to the cabinet module;

[0041] S2: Maximum number of air conditioning units under rated power consumption of computer cabinet module;

[0042] S3: Real-time detection and sorting of actual power consumption of the cabinet module, calculation of actual total power consumption;

[0043] S4: Calculation of actual air conditioning unit quantity based on actual total power consumption of the cabinet module;

[0044] S5: Adjustment of air conditioning unit switching sequence and state based on cabinet module quantity, actual air conditioning unit quantity, and maximum air conditioning unit quantity.

[0045] The cabinet module and air conditioning unit information is counted, including rated refrigerating capacity and optimal load rate, etc., which is used to calculate the number of air conditioning units required by the cabinet module, set the opening priority of the air conditioning unit corresponding to the cabinet module, determine the specific air conditioning unit and its sequence that need to be opened according to the opening priority of the air conditioning unit when the cabinet module needs to open the air conditioning unit, calculate the maximum air conditioning unit quantity under the rated power consumption of the cabinet module, take the maximum air conditioning unit quantity as the group control judgment data, real-time detect and sort the actual power consumption of the cabinet module, calculate the actual total power consumption of the cabinet module according to the actual power consumption of each cabinet module, calculate the actual air conditioning unit quantity based on the actual total power consumption of the cabinet module, adjust the air conditioning unit switching sequence and state based on the cabinet module quantity, actual air conditioning unit quantity, and maximum air conditioning unit quantity, so as to determine the number, sequence, and state of the air conditioning unit that needs to be opened. It can be based on the optimal load efficiency of the air conditioning unit for group control, and the opening position of the air conditioning unit is always closest to the area with the maximum equipment power consumption.

[0046] In step S1, M cabinet modules are divided in the machine room, the cabinet modules include closed hot aisle modules and closed cold aisle modules, and N main and standby air conditioning units are provided in total. The cabinet modules and air conditioning units are numbered, and the cabinet modules and air conditioning units use different character numbers, wherein the cabinet modules use the form of "character # cabinet module", and the air conditioning units use the form of "number # air conditioning unit", the character and number sequence increases, other numbering methods can also be used, such as pure numbers or combinations of letters and numbers, etc.

[0047] Each cabinet module corresponds to several air conditioning units, and the priority of opening the cabinet module and the corresponding K air conditioning units is determined: taking the farthest cabinet air inlet from the air conditioning area as the fixed point, and determining the opening priority of the air conditioning unit according to the size of the air flow streamline distance: the air conditioning unit with the shortest air flow streamline of the cabinet module air inlet has the highest opening priority of 1, the air flow streamline distance is second, and the Kth air conditioning unit is set to the number K. And the highest opening priority of 1 of the air conditioning corresponding to each cabinet module should be different air conditioning units.

[0048] The rated refrigerating capacity G and optimal load rate r of each air conditioning unit are counted, wherein the optimal load rate r is obtained according to the air conditioning unit characteristic curve. The optimal load rate r represents the highest load rate r of the air conditioning unit at different outdoor dry and wet temperatures.

[0049] In step S2, the maximum number of air-conditioning units K that can be turned on for each cabinet module is calculated: assuming that the planned rated power consumption of a single cabinet module is S, the calculation expression for the maximum number of air-conditioning units that can be turned on for each cabinet module is as follows:

[0050]

[0051] In the above formula, r is the optimal load factor of the air conditioner unit, G is the rated cooling capacity of the air conditioner unit, S is the rated power consumption, and K is the number of air conditioners that should be turned on at the rated power consumption of the cabinet module. Where H is a natural integer and H < K ≤ H + 1, K = H + 1.

[0052] In step S3, the real-time power consumption q of each cabinet module of the equipment room is detected i And the total power consumption Q it Read the output power consumption of each cabinet module in the room and calculate the real-time power consumption q detected by the cabinet corresponding to each cabinet module. i , and then sum up the total power consumption Q of each cabinet module in the computer room it , the expression is as follows:

[0053]

[0054] In the above formula, Q it is the total power consumption of each cabinet module, q i is the real-time power consumption q of each cabinet module i , M is the number of cabinet modules.

[0055] Identify real-time power consumption q i The number of cabinet modules is greater than zero, m. The real-time power consumption of the m cabinet modules is sorted, and the output power consumption of the first cabinet of each cabinet module is sorted.

[0056] In step S4, the actual number of air-conditioning units that need to be turned on is calculated: under the optimal load rate r of the air-conditioning units, the total number of air-conditioning units that need to be turned on in the computer room is calculated, and the expression is as follows:

[0057]

[0058] In the above formula, r is the optimal load rate of the air-conditioning unit, G is the rated cooling capacity of the air-conditioning unit, Q is it is the total power consumption of each cabinet module, n x Indicates the total number of air-conditioning units that need to be turned on, x indicates the number of times the air-conditioning unit is adjusted. When x=1, it indicates the initial start-up of the air-conditioning unit. When x>1, it indicates that the air-conditioning unit is adjusted for the xth time.

[0059] In step S5, the total number n of air-conditioning units to be turned on as neededx The relationship between the number of cabinet modules M and the total number of air-conditioning units N is used to control the start or stop of each air-conditioning unit. The control scheme is as follows:

[0060] When n x ≥N, determine whether N air-conditioning units are turned on. If not, turn on N air-conditioning units; if already turned on, do not perform any operation and enter the next adjustment.

[0061] When n x <N and M <n x <N. The control scheme steps are as follows:

[0062] S31: Determine whether the air-conditioning unit with a startup priority of 1 corresponding to each cabinet module is turned on. If it is turned on, proceed to step S32; if not, turn on the air-conditioning unit with a priority of 1 for each module.

[0063] S32: Determine the maximum power consumption q max Check whether the air conditioning unit with a priority of 2 corresponding to the cabinet module m1 is turned on:

[0064] If it is turned on, the second largest power consumption is determined max-1 The cabinet module m2 corresponds to whether the air-conditioning unit with a start priority of 2 is turned on.

[0065] If not, turn on this air conditioner and check whether the number of air conditioners turned on has reached n. x If it is reached, this round of adjustment ends; if it is not reached, max=max-1 and m i =m i+1 , determine the cabinet module with the second highest power consumption and proceed to step S32.

[0066] When n x <N, and M≥n x When the actual power consumption of each cabinet module is detected, the air conditioner with the priority of 1 corresponding to each cabinet module is judged to be turned on according to the power consumption of the cabinet module from large to small. If not, the first n cabinet modules are turned on in order of power consumption. x The air conditioner unit with cabinet module priority 1.

[0067] After one adjustment cycle T, the process returns to step S3 to re-determine the number of air-conditioning units that need to be turned on.

[0068] After adjusting the on / off sequence and status of the air conditioning units, cooling capacity is controlled based on the supply air temperature, and air volume is controlled based on the return air temperature. Specifically, the air conditioning units use supply air temperature to control cooling capacity. When the supply air temperature is higher than the set value, the refrigerant supply is increased, and vice versa. Return air temperature controls air volume. When the return air temperature is higher than the set value, the fan speed is increased, and vice versa.

[0069] Example 2:

[0070] like Figure 2 As shown, there are 3 closed hot channel modules in the computer room, that is, the number of cabinet modules M is 3, according to the control method of the present invention.

[0071] The enclosed hot aisle cabinet modules are numbered a# through c#, with each module having a total rated power consumption of 120 kW. There are five air conditioner units (N) with a sensible cooling capacity of 100 kW, numbered 1# through 5#, with four in service and one in reserve. Based on the characteristics of the air conditioner units, each unit achieves peak efficiency when the load factor r = 70%.

[0072] Calculate the maximum number of air-conditioning units that can be turned on for each cabinet module. The value of K, when 1<1.7≤2, is a natural integer of K=2.

[0073] Based on the installed equipment in the computer room, the initial planned power consumption for each power supply cabinet is as shown in the table below.

[0074]

[0075] Sort the power consumption of each cabinet module and the power supply cabinet from large to small:

[0076] Cabinet module b# > cabinet module a# > cabinet module c#, PDFa-1 > PDFa-2, PDFb-2 > PDFb-1, PDFc-1 > PDFc-2.

[0077] Determine the priority of starting the corresponding K air-conditioning units based on the planned installed power consumption of the computer room modules. For the a# enclosed hot aisle cabinet module, the air-conditioning unit with the shortest air flow streamline at the cabinet air inlet is the 1# air-conditioning unit; for the b# enclosed hot aisle cabinet module, the air-conditioning unit with the shortest air flow streamline at the cabinet air inlet is the 2# air-conditioning unit; and for the c# enclosed hot aisle cabinet module, the air-conditioning unit with the shortest air flow streamline at the cabinet air inlet is the 4# air-conditioning unit.

[0078] According to the a# enclosed hot aisle cabinet module, the air conditioning unit with the second shortest cabinet air inlet air flow streamline is the 2# air conditioner; the air conditioning unit with the second shortest cabinet air inlet air flow streamline is the b# enclosed hot aisle cabinet module, and the air conditioning unit with the second shortest cabinet air inlet air flow streamline is the 3# air conditioner; the air conditioning unit with the second shortest cabinet air inlet air flow streamline is the c# enclosed hot aisle cabinet module.

[0079] Plan installation power consumption according to cabinet modules q i And the total power consumption Q it Calculate the number of units to be turned on, and the total power consumption is 150KW. At this time, the number of air conditioning units that should be turned on in the computer room is At this time, take n1 = 3 units, and it can be concluded that 3 air-conditioning units should be turned on in the computer room.

[0080] At this point, the number of cabinet modules, M, equals 3 and equals n1. Based on the power consumption of each cabinet module, the system determines, in descending order, whether the corresponding air conditioner with a power-on priority of 1 is on. At this point, turn on air conditioner #1, which has a priority of 1 in cabinet a with enclosed hot aisle module; turn on air conditioner #2, which has a priority of 1 in cabinet b with enclosed hot aisle module; and turn on air conditioner #4, which has a priority of 1 in cabinet b with enclosed hot aisle module. All other air conditioners are turned off.

[0081] Example 3:

[0082] In combination with the second embodiment, as the power consumption required by the customer increases, the power consumption of each cabinet module is detected for the second time and changes as follows.

[0083]

[0084] Recalculate the number of air conditioner units that should be turned on in the computer room, and the total power consumption is 220KW. At this time, take n2 = 4 units, and it can be concluded that 4 air-conditioning units should be turned on in the computer room.

[0085] Check whether the air conditioning units with priority 1 corresponding to the three cabinet modules are turned on. Confirm that they are turned on.

[0086] Determine whether the 5# air conditioning unit with a priority of 2 corresponding to the c# cabinet module with the highest power consumption is turned on. If not, turn on the air conditioning unit.

[0087] Determine whether the number of air-conditioning units that have been turned on is n2=4. If the number that should be turned on is reached, the other air-conditioning units will be turned off. This round of adjustment is completed, and the controller enters the next round of power consumption detection and air-conditioning unit number adjustment.

[0088] Example 4:

[0089] In combination with Example 2, some equipment in cabinet module b# is relocated, and the power consumption demand is reduced. The control system detects the power consumption changes of each cabinet module for the second time as follows.

[0090]

[0091] Recalculate the number of air conditioning units that should be turned on in the computer room, the total power consumption is 130KW. At this time, the number of units that should be turned on in the computer room is 2 units, at this time, take n3=2 units, it is concluded that 2 units of air conditioning units should be turned on in the computer room at this time.

[0092] Energy consumption statistics and sorting: c# cabinet module power consumption > a# cabinet module power consumption > b# cabinet module power consumption.

[0093] Determine whether the 4# air conditioning unit corresponding to the c# cabinet module priority is 1# air conditioning unit corresponding to the # cabinet module priority, which is 1, whether it is turned on, and if it is turned on, do not move, if it is not turned on, turn on the air conditioner.

[0094] Determine whether the number of air conditioning units that have been turned on is n3=2 units, reach the number of units that should be turned on, turn off the other air conditioners except 1#, 4# air conditioning units, this round of adjustment is completed, and the controller enters the next round of power consumption detection and air conditioning unit number adjustment.

[0095] As can be seen from the above embodiments, after using the method of the present application, group control can be performed based on the best load efficiency of the air conditioning unit, and the opening position of the air conditioning unit is always closest to the area with the maximum equipment power consumption, and automatically adjusts with the change of power consumption distribution.

[0096] The above-described embodiments only express several embodiments of the present application, which are described in detail and in detail, but should not be understood as limiting the scope of the patent. It should be noted that for ordinary skilled in the art, without departing from the concept of the present application, a number of modifications and improvements can be made, which are within the scope of the present application. Therefore, the scope of protection of the present application should be subject to the appended claims.

Claims

1. A computer room air conditioning group control method based on dynamic power consumption tracking, characterized in that: The air conditioner is turned on at the position closest to the area with the highest power consumption, and automatically adjusts as the power consumption distribution changes. This includes the following steps: S1: Collects cabinet module and air conditioning unit information and sets the startup priority of the air conditioning unit corresponding to the cabinet module; S2: Maximum number of air conditioning units under rated power consumption of computer cabinet module; S3: Detect and sort the actual power consumption of cabinet modules in real time and calculate the actual total power consumption; S4: Calculate the actual number of air conditioning units based on the actual total power consumption of the cabinet modules; S5: Adjust the power-on and power-off sequence and status of the air conditioner units based on the number of cabinet modules, the actual power consumption ranking of the cabinet modules, the actual number of air conditioner units, and the maximum number of air conditioner units. If the actual number of air conditioner units is greater than the number of cabinet modules and less than the maximum number of air conditioner units: S51: If the air conditioning unit with a priority of 1 corresponding to each cabinet module is not turned on, turn on the air conditioning unit with a priority of 1 for each module; otherwise, execute S52; S52: If the air-conditioning unit with a startup priority of 2 corresponding to the cabinet module with the largest power consumption is turned on, determine whether the air-conditioning unit with a startup priority of 2 corresponding to the cabinet module with the second largest power consumption is turned on; otherwise, turn on this air-conditioning unit and determine whether the number of turned-on air-conditioning units reaches the actual number of air-conditioning units.

2. A computer room air conditioner group control method based on dynamic power consumption tracking according to claim 1, characterized in that: In S1, the air inlet of the cabinet farthest from the cabinet module to the air-conditioning area is used as the fixed point, and the air conditioning unit startup priority is determined by the air flow streamline distance. The shorter the air flow streamline, the higher the startup priority of the air conditioning unit.

3. A computer room air conditioner group control method based on dynamic power consumption tracking according to claim 1 or 2, characterized in that: Different cabinet modules correspond to different air conditioner units with the highest activation priority.

4. The method for group control of computer room air conditioners based on dynamic power consumption tracking according to claim 1, characterized in that: In S2, the calculation expression for the maximum number of air-conditioning units that can be turned on for each cabinet module is as follows: In the above formula, r is the optimal load rate of the air-conditioning unit, G is the rated cooling capacity of the air-conditioning unit, S is the rated power consumption, and K is the number of air-conditioning units that should be turned on at the rated power consumption of the cabinet module.

5. A computer room air conditioner group control method based on dynamic power consumption tracking according to claim 1 or 4, characterized in that: The number of air conditioners that should be turned on at the rated power consumption of the cabinet module is rounded up.

6. The method for group control of computer room air conditioners based on dynamic power consumption tracking according to claim 1, characterized in that: In S3, the real-time power consumption q detected by the cabinet head corresponding to each cabinet module is calculated. i , calculate the total power consumption Q of each cabinet module in the computer room it , the expression is as follows: In the above formula, Q it is the total power consumption of each cabinet module, q i is the real-time power consumption q of each cabinet module i , M is the number of cabinet modules.

7. The method for group control of computer room air conditioners based on dynamic power consumption tracking according to claim 1, characterized in that: In S4, the actual number of air conditioning units is calculated based on the actual total power consumption of the cabinet modules. The expression is as follows: In the above formula, r is the optimal load rate of the air-conditioning unit, G is the rated cooling capacity of the air-conditioning unit, Q is it is the actual total power consumption of each cabinet module, n x Indicates the total number of air-conditioning units that need to be turned on, and x indicates the number of times the air-conditioning units are adjusted.

8. A computer room air conditioner group control method based on dynamic power consumption tracking according to claim 1 or 7, characterized in that: When the number of adjustments of the air-conditioning unit is equal to 1, the air-conditioning unit is initially started; when the number of adjustments of the air-conditioning unit is greater than 1, the air-conditioning unit is adjusted for the xth time.

9. The method for group control of computer room air conditioners based on dynamic power consumption tracking according to claim 1, characterized in that: In S5, when the actual number of air-conditioning units is greater than or equal to the maximum number of air-conditioning units, all air-conditioning units are turned on according to the maximum number of air-conditioning units; when the actual number of air-conditioning units is less than the maximum number of air-conditioning units and less than or equal to the number of cabinet modules, the air-conditioning units with the highest priority are turned on in descending order according to the power consumption of the cabinet modules; when the actual number of air-conditioning units is greater than the number of cabinet modules and less than the maximum number of air-conditioning units, the air-conditioning units with the highest priority corresponding to each cabinet module are turned on, and then the air-conditioning units with lower priority corresponding to each cabinet module are turned on according to the power consumption of the cabinet modules.

10. A computer room air conditioner group control method based on dynamic power consumption tracking according to claim 1 or 9, characterized in that: When the actual number of air conditioner units is greater than the number of cabinet modules but less than the maximum number of air conditioner units, the power on / off sequence and status control steps of the air conditioner units are as follows: S31: Determine whether the air conditioning unit with the highest priority corresponding to each cabinet module is turned on. If it is turned on, proceed to step S32; if not, turn on the air conditioning unit with the highest priority of each module; S32: Determine whether the air-conditioning unit with the next highest priority corresponding to the cabinet module with the highest power consumption is turned on. If so, proceed to step S32 based on whether the air-conditioning unit with the next highest priority corresponding to the cabinet module with the next highest power consumption is turned on. If it is not turned on, turn on this air-conditioning unit and determine whether the number of turned-on air-conditioning units reaches the actual number of air-conditioning units. If it reaches the actual number of air-conditioning units, this round of adjustment ends. If it does not reach the actual number of air-conditioning units, step S32 is performed based on whether the cabinet module with the second highest power consumption corresponds to the air-conditioning unit with the next highest priority.

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