Equipment scheduling method and system for variable-frequency air compressor unit and readable storage medium

Abstract

The invention discloses an equipment scheduling method and system for a variable-frequency air compressor unit and a readable storage medium, and the method comprises the steps: traversing all air compressors to enter a number judgment cycle, and exiting the cycle until the number of traversed equipment meets the requirement; after quitting the number judgment cycle, accumulating the average gas production rates of all the air compressors within three minutes to estimate the unit load rate; comparing the unit load rate with an upper limit load rate, and if the unit load rate is higher than an upper limit preset load rate, performing machine increasing scheduling; if the unit load rate is not higher than the upper limit load rate, the relation between the current unit load rate and the lower limit load rate is judged, and if the unit load rate is not lower than the lower limit load rate, the current process is ended; and if the unit load rate is lower than the lower limit load rate, carrying out subtracted dispatching. According to the invention, the scheduling problem of the variable-frequency air compressor unit is solved in a more energy-saving manner, the effects of energy conservation and emission reduction are achieved, and the workload of unit operation and maintenance management personnel is reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of air compressor scheduling, and more specifically, to an equipment scheduling method, system and readable storage medium for a variable frequency air compressor unit. Background Art

[0002] After the energy-saving technology transformation, the air compressor station was upgraded to a permanent magnet variable frequency air compressor unit, which improved energy utilization efficiency and reduced unit energy consumption.

[0003] However, in actual application, it is found that the scheduling of air compressors is relatively backward. Generally, it is controlled according to the total rated output or total rated power of the air compressors. When the demand is more than the total rated output, the rated output of one air compressor is reduced. When the demand exceeds the total rated output, one machine is added. At present, there is still a lack of intelligent control for the scheduling of air compressors, which leads to waste of resources and increase of manpower cost of unit operation and maintenance. Summary of the invention

[0004] The purpose of the present invention is to provide an equipment scheduling method, system and readable storage medium for a variable frequency air compressor unit, which solves the problem of scheduling a variable frequency air compressor unit in a more energy-efficient manner, plays a role in energy conservation and emission reduction, and reduces the workload of unit operation and maintenance management personnel.

[0005] A first aspect of the present invention provides an equipment scheduling method for a variable frequency air compressor unit, comprising the following steps:

[0006] Traverse all air compressors to enter the quantity judgment loop, and exit the loop when the number of traversed devices meets the requirement;

[0007] After exiting the quantity judgment cycle, the average gas output of all air compressors within three minutes is accumulated to estimate the unit load rate;

[0008] Based on the comparison between the unit load rate and the upper limit load rate,

[0009] If the load rate of the unit is higher than the upper limit preset load rate, additional unit scheduling is performed;

[0010] If the unit load rate is not higher than the upper limit load rate, the relationship between the current unit load rate and the lower limit load rate is determined, wherein:

[0011] If the unit load rate is not lower than the lower limit load rate, the current process is terminated;

[0012] If the unit load factor is lower than the lower limit load factor, the unit reduction scheduling is performed.

[0013] In this solution, the process of traversing all air compressors to enter a quantity determination loop and exiting the loop until the number of traversed devices meets the requirement specifically includes:

[0014] At the beginning of the process, the number of traversed devices is set to zero and the total number of devices is read;

[0015] When the number of devices traversing the air compressor is less than the total number of devices, the traversal data point is incremented by one each time the rated frequency and rated output of the current air compressor are read;

[0016] When the number of traversed air compressor devices is not less than the total number of devices, the current number judgment loop is exited.

[0017] In this scheme, after exiting the quantity judgment cycle, the average gas production of all air compressors within three minutes is accumulated to estimate the unit load rate, including:

[0018] The average gas production of all air compressors within three minutes is accumulated to obtain the average gas production of the unit within three minutes;

[0019] The load rate of the unit is obtained based on the ratio of the three-minute average gas production of the unit to the rated gas production of the unit.

[0020] In this scheme, if the load rate of the unit is higher than the upper limit preset load rate, additional unit scheduling is performed, specifically including:

[0021] Traverse the currently stopped air compressors and calculate the load rate of the unit after adding the air compressor, where:

[0022] If the load rate of the additional unit is within the preset range, the air compressor with the shortest cumulative running time within the preset range is started;

[0023] Otherwise, the air compressor with the smallest cumulative running time will be started directly.

[0024] In this scheme, if the unit load rate is lower than the lower limit load rate, the unit reduction scheduling is carried out, which specifically includes:

[0025] Traverse the currently running air compressors and calculate the load rate of the updated unit after reducing the air compressors, where:

[0026] If the load rate of the unit to be replaced is within a preset range, the air compressor with the largest cumulative running time within the preset range is shut down;

[0027] Otherwise, terminate the current process.

[0028] In this solution, the upper limit load rate is 90%, the lower limit load rate is 60%, and the preset range is (60%, 90%).

[0029] The second aspect of the present invention further provides an equipment scheduling system for a variable frequency air compressor group, comprising a memory and a processor, wherein the memory comprises an equipment scheduling method program for the variable frequency air compressor group, and when the equipment scheduling method program for the variable frequency air compressor group is executed by the processor, the following steps are implemented:

[0030] Traverse all air compressors to enter the quantity judgment loop, and exit the loop when the number of traversed devices meets the requirement;

[0031] After exiting the quantity judgment cycle, the average gas output of all air compressors within three minutes is accumulated to estimate the unit load rate;

[0032] Based on the comparison between the unit load rate and the upper limit load rate,

[0033] If the load rate of the unit is higher than the upper limit preset load rate, additional unit scheduling is performed;

[0034] If the unit load rate is not higher than the upper limit load rate, the relationship between the current unit load rate and the lower limit load rate is determined, wherein:

[0035] If the unit load rate is not lower than the lower limit load rate, the current process is terminated;

[0036] If the unit load factor is lower than the lower limit load factor, the unit reduction scheduling is performed.

[0037] In this solution, the process of traversing all air compressors to enter a quantity determination loop and exiting the loop until the number of traversed devices meets the requirement specifically includes:

[0038] At the beginning of the process, the number of traversed devices is set to zero and the total number of devices is read;

[0039] When the number of devices traversing the air compressor is less than the total number of devices, the traversal data point is incremented by one each time the rated frequency and rated output of the current air compressor are read;

[0040] When the number of traversed air compressor devices is not less than the total number of devices, the current number judgment loop is exited.

[0041] In this scheme, after exiting the quantity judgment cycle, the average gas production of all air compressors within three minutes is accumulated to estimate the unit load rate, including:

[0042] The average gas production of all air compressors within three minutes is accumulated to obtain the average gas production of the unit within three minutes;

[0043] The load rate of the unit is obtained based on the ratio of the three-minute average gas production of the unit to the rated gas production of the unit.

[0044] In this scheme, if the load rate of the unit is higher than the upper limit preset load rate, additional unit scheduling is performed, specifically including:

[0045] Traverse the currently stopped air compressors and calculate the load rate of the unit after adding the air compressor, where:

[0046] If the load rate of the additional unit is within the preset range, the air compressor with the shortest cumulative running time within the preset range is started;

[0047] Otherwise, the air compressor with the smallest cumulative running time will be started directly.

[0048] In this scheme, if the unit load rate is lower than the lower limit load rate, the unit reduction scheduling is carried out, which specifically includes:

[0049] Traverse the currently running air compressors and calculate the load rate of the updated unit after reducing the air compressors, where:

[0050] If the load rate of the unit to be replaced is within a preset range, the air compressor with the largest cumulative running time within the preset range is shut down;

[0051] Otherwise, terminate the current process.

[0052] In this solution, the upper limit load rate is 90%, the lower limit load rate is 60%, and the preset range is (60%, 90%).

[0053] The third aspect of the present invention provides a computer-readable storage medium, which includes a device scheduling method program for a variable frequency air compressor unit of a machine. When the device scheduling method program for the variable frequency air compressor unit is executed by a processor, the steps of the device scheduling method for a variable frequency air compressor unit as described in any one of the above items are implemented.

[0054] The present invention discloses an equipment scheduling method, system and readable storage medium for a variable frequency air compressor unit. The method uses a frequency estimation unit to start the average load rate of the equipment, and selects the addition and subtraction of machines based on the expected change in the average load rate after adding and subtracting the machines. This can achieve the optimal selection of the starting equipment for the variable frequency air compressor unit, optimize the operation of the unit, play a role in energy conservation and emission reduction, and reduce the workload of the unit operation and maintenance management personnel. BRIEF DESCRIPTION OF THE DRAWINGS

[0055] Figure 1 A flow chart showing a method for dispatching equipment of a variable frequency air compressor unit according to the present invention is shown;

[0056] Figure 2 A flow chart showing a method for dispatching equipment of a variable frequency air compressor unit according to the present invention is shown;

[0057] Figure 3 A block diagram of an equipment dispatching system for a variable frequency air compressor unit of the present invention is shown. DETAILED DESCRIPTION

[0058] In order to more clearly understand the above-mentioned purpose, features and advantages of the present invention, the present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be noted that the embodiments of the present application and the features in the embodiments can be combined with each other without conflict.

[0059] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the protection scope of the present invention is not limited to the specific embodiments disclosed below.

[0060] The present application discloses a method for dispatching equipment of a variable frequency air compressor unit, comprising the following steps:

[0061] Traverse all air compressors to enter the quantity judgment loop, and exit the loop when the number of traversed devices meets the requirement;

[0062] After exiting the quantity judgment cycle, the average gas output of all air compressors within three minutes is accumulated to estimate the unit load rate;

[0063] Based on the comparison between the unit load rate and the upper limit load rate,

[0064] If the load rate of the unit is higher than the upper limit preset load rate, additional unit scheduling is performed;

[0065] If the unit load rate is not higher than the upper limit load rate, the relationship between the current unit load rate and the lower limit load rate is determined, wherein:

[0066] If the unit load rate is not lower than the lower limit load rate, the current process is terminated;

[0067] If the unit load factor is lower than the lower limit load factor, the unit reduction scheduling is performed.

[0068] It should be noted that, in this embodiment, Figure 1 As shown, all air compressors are traversed to enter a quantity judgment loop, and the loop is exited until the number of traversed devices meets the requirement. Specifically, when the process starts, the number of traversed devices is set to zero, and the total number of devices is read. When the number of traversed air compressor devices is less than the total number of devices, the traversed data point is added by one each time the rated frequency and rated output of the current air compressor are read; until the number of traversed air compressor devices is not less than the total number of devices, the current quantity judgment loop is exited.

[0069] Furthermore, when the number of traversed air compressor devices is less than the total number of devices, determine whether the current air compressor is in the on state. If so, determine whether it is in the loaded state. If so, the average gas production of the current air compressor in the past 3 minutes (a total of 12 data points within three minutes) is increased on the basis of the original value by (current frequency / rated frequency×rated production / 12). Finally, the traversed data point is added by one to complete the operation of adding one to the number of traversed devices, until the last traversed number of devices meets the total number of devices, and then exit the current loop.

[0070] According to an embodiment of the present invention, after exiting the quantity judgment cycle, the average gas production of all air compressors within three minutes is accumulated to estimate the unit load rate, specifically including:

[0071] The average gas production of all air compressors within three minutes is accumulated to obtain the average gas production of the unit within three minutes;

[0072] The load rate of the unit is obtained based on the ratio of the three-minute average gas production of the unit to the rated gas production of the unit.

[0073] It should be noted that, in this embodiment, Figure 1 As shown, after exiting the cycle, the unit load rate needs to be estimated, specifically, the average gas production of all air compressors in three minutes is accumulated to obtain the three-minute average gas production of the unit; the unit load rate is obtained based on the ratio of the three-minute average gas production of the unit to the rated gas production of the unit.

[0074] According to an embodiment of the present invention, if the load rate of the unit is higher than the upper limit preset load rate, additional unit scheduling is performed, specifically including:

[0075] Traverse the currently stopped air compressors and calculate the load rate of the unit after adding the air compressor, where:

[0076] If the load rate of the additional unit is within the preset range, the air compressor with the shortest cumulative running time within the preset range is started;

[0077] Otherwise, the air compressor with the smallest cumulative running time will be started directly.

[0078] According to an embodiment of the present invention, if the unit load rate is lower than the lower limit load rate, the unit reduction scheduling is performed, which specifically includes:

[0079] Traverse the currently running air compressors and calculate the load rate of the updated unit after reducing the air compressors, where:

[0080] If the load rate of the unit to be replaced is within a preset range, the air compressor with the largest cumulative running time within the preset range is shut down;

[0081] Otherwise, terminate the current process.

[0082] It should be noted that, in this embodiment, the upper limit load rate is 90%, the lower limit load rate is 60%, and the preset range is (60%, 90%). Specifically, this embodiment specifically describes the selection of the adding and subtracting machine, such as Figure 2 As shown, the specific steps are as follows:

[0083] Step (1), determine whether the average load rate of the unit in the past 3 minutes (within 3 minutes) is higher than 90%, if it is higher than 90%, jump to step (2), otherwise jump to step (4);

[0084] Step (2), traverse the currently stopped air compressors, and calculate the unit load rate after adding one air compressor, wherein the unit load rate = the estimated value of the compressed air demand / the sum of the rated outputs of the air compressors in the started state after adding one air compressor;

[0085] Step (3), determining whether there is an air compressor whose load rate after adding the machine is between 60% and 90%, if so, starting the air compressor with the shortest cumulative running time that meets the condition, otherwise starting the air compressor with the shortest cumulative running time, and ending the current process;

[0086] Step (4), determine whether the average load rate of the unit in the past 3 minutes (within 3 minutes) is lower than 60%, if it is lower than 60%, jump to step (5), otherwise end the current process.

[0087] Step (5), traverse the currently running air compressors, and calculate the unit load rate after reducing one air compressor, wherein the unit load rate = the estimated value of the compressed air demand / the sum of the rated outputs of the air compressors in the starting state after stopping one air compressor;

[0088] Step (6), determine whether there is an air compressor with a load rate of 60% to 90% after the reduction of the machine, if so, start the air compressor with the shortest cumulative running time that meets the conditions, otherwise start the air compressor with the shortest cumulative running time and end the current process.

[0089] Figure 3 A block diagram of an equipment dispatching system for a variable frequency air compressor unit of the present invention is shown.

[0090] like Figure 3 As shown, the present invention discloses an equipment scheduling system for a variable frequency air compressor set, comprising a memory and a processor, wherein the memory comprises an equipment scheduling method program for the variable frequency air compressor set, and when the equipment scheduling method program for the variable frequency air compressor set is executed by the processor, the following steps are implemented:

[0091] Traverse all air compressors to enter the quantity judgment loop, and exit the loop when the number of traversed devices meets the requirement;

[0092] After exiting the quantity judgment cycle, the average gas output of all air compressors within three minutes is accumulated to estimate the unit load rate;

[0093] Based on the comparison between the unit load rate and the upper limit load rate,

[0094] If the load rate of the unit is higher than the upper limit preset load rate, additional unit scheduling is performed;

[0095] If the unit load rate is not higher than the upper limit load rate, the relationship between the current unit load rate and the lower limit load rate is determined, wherein:

[0096] If the unit load rate is not lower than the lower limit load rate, the current process is terminated;

[0097] If the unit load factor is lower than the lower limit load factor, the unit reduction scheduling is performed.

[0098] It should be noted that, in this embodiment, Figure 1 As shown, all air compressors are traversed to enter a quantity judgment loop, and the loop is exited until the number of traversed devices meets the requirement. Specifically, when the process starts, the number of traversed devices is set to zero, and the total number of devices is read. When the number of traversed air compressor devices is less than the total number of devices, the traversed data point is added by one each time the rated frequency and rated output of the current air compressor are read; until the number of traversed air compressor devices is not less than the total number of devices, the current quantity judgment loop is exited.

[0099] Furthermore, when the number of traversed air compressor devices is less than the total number of devices, determine whether the current air compressor is in the on state. If so, determine whether it is in the loaded state. If so, the average gas production of the current air compressor in the past 3 minutes (a total of 12 data points in three minutes) is increased on the basis of the original value by (current frequency / rated frequency×rated production / 12). Finally, the traversed data point is added by one to complete the operation of adding one to the number of traversed devices, until the last traversed number of devices meets the total number of devices to exit the current loop.

[0100] According to an embodiment of the present invention, after exiting the quantity judgment cycle, the average gas production of all air compressors within three minutes is accumulated to estimate the unit load rate, specifically including:

[0101] The average gas production of all air compressors within three minutes is accumulated to obtain the average gas production of the unit within three minutes;

[0102] The load rate of the unit is obtained based on the ratio of the three-minute average gas production of the unit to the rated gas production of the unit.

[0103] It should be noted that, in this embodiment, Figure 1As shown, after exiting the cycle, the unit load rate needs to be estimated, specifically, the average gas production of all air compressors in three minutes is accumulated to obtain the three-minute average gas production of the unit; the unit load rate is obtained based on the ratio of the three-minute average gas production of the unit to the rated gas production of the unit.

[0104] According to an embodiment of the present invention, if the load rate of the unit is higher than the upper limit preset load rate, additional unit scheduling is performed, specifically including:

[0105] Traverse the currently stopped air compressors and calculate the load rate of the unit after adding the air compressor, where:

[0106] If the load rate of the additional unit is within the preset range, the air compressor with the shortest cumulative running time within the preset range is started;

[0107] Otherwise, the air compressor with the smallest cumulative running time will be started directly.

[0108] According to an embodiment of the present invention, if the unit load rate is lower than the lower limit load rate, the unit reduction scheduling is performed, which specifically includes:

[0109] Traverse the currently running air compressors and calculate the load rate of the updated unit after reducing the air compressors, where:

[0110] If the load rate of the unit to be replaced is within a preset range, the air compressor with the largest cumulative running time within the preset range is shut down;

[0111] Otherwise, terminate the current process.

[0112] It should be noted that, in this embodiment, the upper limit load rate is 90%, the lower limit load rate is 60%, and the preset range is (60%, 90%). Specifically, this embodiment specifically describes the selection of the adding and subtracting machine, such as Figure 2 As shown, the specific steps are as follows:

[0113] Step (1), determine whether the average load rate of the unit in the past 3 minutes (within 3 minutes) is higher than 90%, if it is higher than 90%, jump to step (2), otherwise jump to step (4);

[0114] Step (2), traverse the currently stopped air compressors, and calculate the unit load rate after adding one air compressor, wherein the unit load rate = the estimated value of the compressed air demand / the sum of the rated outputs of the air compressors in the started state after adding one air compressor;

[0115] Step (3), determining whether there is an air compressor whose load rate after adding the machine is between 60% and 90%, if so, starting the air compressor with the shortest cumulative running time that meets the condition, otherwise starting the air compressor with the shortest cumulative running time, and ending the current process;

[0116] Step (4), determine whether the average load rate of the unit in the past 3 minutes (within 3 minutes) is lower than 60%, if it is lower than 60%, jump to step (5), otherwise end the current process.

[0117] Step (5), traverse the currently running air compressors, and calculate the unit load rate after reducing one air compressor, wherein the unit load rate = the estimated value of the compressed air demand / the sum of the rated outputs of the air compressors in the starting state after stopping one air compressor;

[0118] Step (6), determine whether there is an air compressor with a load rate of 60% to 90% after the reduction of the machine, if so, start the air compressor with the shortest cumulative running time that meets the conditions, otherwise start the air compressor with the shortest cumulative running time and end the current process.

[0119] The third aspect of the present invention provides a computer-readable storage medium, which includes a device scheduling method program for a variable frequency air compressor group. When the device scheduling method program for a variable frequency air compressor group is executed by a processor, the steps of a device scheduling method for a variable frequency air compressor group as described in any one of the above items are implemented.

[0120] The present invention discloses an equipment scheduling method, system and readable storage medium for a variable frequency air compressor unit. The method uses a frequency estimation unit to start the average load rate of the equipment, and selects the addition and subtraction of machines based on the expected change in the average load rate after adding and subtracting the machines. This can achieve the optimal selection of the starting equipment for the variable frequency air compressor unit, optimize the operation of the unit, play a role in energy conservation and emission reduction, and reduce the workload of the unit operation and maintenance management personnel.

[0121] In the several embodiments provided in the present application, it should be understood that the disclosed devices and methods can be implemented in other ways. The device embodiments described above are only schematic. For example, the division of the units is only a logical function division. There may be other division methods in actual implementation, such as: multiple units or components can be combined, or can be integrated into another system, or some features can be ignored or not executed. In addition, the coupling, direct coupling, or communication connection between the components shown or discussed can be through some interfaces, and the indirect coupling or communication connection of the devices or units can be electrical, mechanical or other forms.

[0122] The units described above as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units; they may be located in one place or distributed on multiple network units; some or all of the units may be selected according to actual needs to achieve the purpose of the present embodiment.

[0123] In addition, all functional units in the embodiments of the present invention may be integrated into one processing unit, or each unit may be separately used as a unit, or two or more units may be integrated into one unit; the above-mentioned integrated units may be implemented in the form of hardware or in the form of hardware plus software functional units.

[0124] A person of ordinary skill in the art can understand that: all or part of the steps of implementing the above method embodiments can be completed by hardware related to program instructions, and the aforementioned program can be stored in a computer-readable storage medium. When the program is executed, it executes the steps of the above method embodiments; and the aforementioned storage medium includes: mobile storage devices, read-only memories (ROM, Read-Only Memory), random access memories (RAM, Random Access Memory), magnetic disks or optical disks, and other media that can store program codes.

[0125] Alternatively, if the above-mentioned integrated unit of the present invention is implemented in the form of a software function module and sold or used as an independent product, it can also be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the embodiment of the present invention can be essentially or partly reflected in the form of a software product that contributes to the prior art. The computer software product is stored in a storage medium and includes several instructions for a computer device (which can be a personal computer, a server, or a network device, etc.) to execute all or part of the methods described in each embodiment of the present invention. The aforementioned storage medium includes: various media that can store program codes, such as mobile storage devices, ROM, RAM, magnetic disks or optical disks.

Claims

1. A method for dispatching equipment of a variable frequency air compressor unit, characterized in that: The following steps are involved: Traverse all air compressors to enter the quantity judgment loop, and exit the loop when the number of traversed devices meets the requirement; After exiting the quantity judgment cycle, the average gas output of all air compressors within three minutes is accumulated to estimate the unit load rate; Based on the comparison between the unit load rate and the upper limit load rate, If the load rate of the unit is higher than the upper limit preset load rate, additional unit scheduling is performed; If the unit load rate is not higher than the upper limit load rate, the relationship between the current unit load rate and the lower limit load rate is determined, wherein: If the unit load rate is not lower than the lower limit load rate, the current process is terminated; if the unit load rate is lower than the lower limit load rate, machine reduction scheduling is performed.

2. The equipment dispatching method of a variable frequency air compressor unit according to claim 1, characterized in that: The traversal of all air compressors to enter a quantity determination loop, and the loop is exited when the number of traversed devices meets the requirement, specifically includes: At the beginning of the process, the number of traversed devices is set to zero and the total number of devices is read; When the number of devices traversing the air compressor is less than the total number of devices, the traversal data point is incremented by one each time the rated frequency and rated output of the current air compressor are read; When the number of traversed air compressor devices is not less than the total number of devices, the current number judgment loop is exited.

3. The equipment dispatching method of a variable frequency air compressor unit according to claim 2, characterized in that: After exiting the quantity judgment cycle, the average gas output of all air compressors within three minutes is accumulated to estimate the unit load rate, including: The average gas production of all air compressors within three minutes is accumulated to obtain the average gas production of the unit within three minutes; The load rate of the unit is obtained based on the ratio of the three-minute average gas production of the unit to the rated gas production of the unit.

4. The equipment dispatching method of a variable frequency air compressor unit according to claim 3 is characterized in that: If the load rate of the unit is higher than the upper preset load rate, additional unit scheduling is performed, specifically including: Traverse the currently stopped air compressors and calculate the load rate of the unit after adding the air compressor, where: If the load rate of the additional unit is within the preset range, the air compressor with the shortest cumulative running time within the preset range is started; Otherwise, the air compressor with the smallest cumulative running time will be started directly.

5. The equipment dispatching method of a variable frequency air compressor unit according to claim 4, characterized in that: If the load rate of the unit is lower than the lower limit load rate, the unit reduction scheduling is performed, which specifically includes: Traverse the currently running air compressors and calculate the load rate of the updated unit after reducing the air compressors, where: If the load rate of the unit to be replaced is within a preset range, the air compressor with the largest cumulative running time within the preset range is shut down; Otherwise, end the current process.

6. The equipment dispatching method of a variable frequency air compressor unit according to claim 5, characterized in that: The upper limit load rate is 90%, the lower limit load rate is 60%, and the preset range is (60%, 90%).

7. An equipment dispatching system for variable frequency air compressor units, characterized in that: The invention comprises a memory and a processor, wherein the memory comprises a device scheduling method program of a variable frequency air compressor set, and when the device scheduling method program of the variable frequency air compressor set is executed by the processor, the following steps are implemented: Traverse all air compressors to enter the quantity judgment loop, and exit the loop when the number of traversed devices meets the requirement; After exiting the quantity judgment cycle, the average gas output of all air compressors within three minutes is accumulated to estimate the unit load rate; Based on the comparison between the unit load rate and the upper limit load rate, If the load rate of the unit is higher than the upper limit preset load rate, additional unit scheduling is performed; If the unit load rate is not higher than the upper limit load rate, the relationship between the current unit load rate and the lower limit load rate is determined, wherein: If the unit load rate is not lower than the lower limit load rate, the current process is terminated; if the unit load rate is lower than the lower limit load rate, machine reduction scheduling is performed.

8. The equipment dispatching system of the variable frequency air compressor unit according to claim 7, characterized in that: The traversal of all air compressors to enter a quantity determination loop, and the loop is exited when the number of traversed devices meets the requirement, specifically includes: At the beginning of the process, the number of traversed devices is set to zero and the total number of devices is read; When the number of devices traversing the air compressor is less than the total number of devices, the traversal data point is incremented by one each time the rated frequency and rated output of the current air compressor are read; When the number of traversed air compressor devices is not less than the total number of devices, the current number judgment loop is exited.

9. The equipment dispatching system of the variable frequency air compressor unit according to claim 8, characterized in that: After exiting the quantity judgment cycle, the average gas output of all air compressors within three minutes is accumulated to estimate the unit load rate, including: The average gas production of all air compressors within three minutes is accumulated to obtain the average gas production of the unit within three minutes; The load rate of the unit is obtained based on the ratio of the three-minute average gas production of the unit to the rated gas production of the unit.

10. A computer-readable storage medium, characterized in that: The computer-readable storage medium includes a device scheduling method program for a variable frequency air compressor group. When the device scheduling method program for a variable frequency air compressor group is executed by a processor, the steps of a device scheduling method for a variable frequency air compressor group as described in any one of claims 1 to 6 are implemented.

Images