Air compressor cluster joint control method, device, equipment and storage medium

Abstract

The present application relates to air compressor control technical field, disclose a kind of air compressor cluster joint control method, device, equipment and storage medium, the method is by monitoring the air compressor in air compressor cluster online, obtain the demand load of air compressor cluster, the set pressure and current load of each air compressor, the working efficiency of each air compressor is grouped to air compressor cluster, obtain the first air compressor group of relatively higher efficiency and the second air compressor group of relatively lower efficiency, according to the demand load of air compressor cluster and the current load of each air compressor adjusts the set pressure of air compressor in each air compressor group, to control the gas production of air compressor, until the gas production of air compressor cluster and gas consumption match, realize the joint control of air compressor cluster, improve the control speed and accuracy of air compressor.

Description

Technical Field

[0001] This invention relates to the field of air compressor control technology, and in particular to a method, apparatus, equipment and storage medium for the joint control of an air compressor cluster. Background Technology

[0002] In recent years, air compressors have been widely used in industrial production such as construction, steel, machinery, and metallurgy. They compress air, and the compressed air produced can be used as a power source for industrial equipment. Typically, to meet the air demand in industrial settings, multiple air compressors are connected in parallel to form an air compressor cluster, ensuring sufficient air production. However, in actual operation, if all air compressors are kept running continuously, excessive air production may occur when air demand changes, leading to resource waste and increased energy consumption. Related technologies generally employ a method of controlling the start and stop of air compressors, adjusting the number of air compressors needed for different air demands at different times. When air demand increases, new air compressors are added to the system; when air demand decreases, existing air compressors are stopped. This ensures that the air production of the air compressor cluster matches the air demand under different operating conditions at different times.

[0003] However, when the change in air consumption is small, controlling the start and stop of air compressors cannot accurately meet the air demand. This can lead to situations where the air output of a newly added air compressor is too large compared to the increase in air consumption. Stopping the operation of a certain air compressor will result in the air output not being able to meet the increase in air consumption, forcing that air compressor to operate inefficiently and wasting energy. In addition, since the start and stop of air compressors require a certain reaction time, it is impossible to quickly control the air compressor cluster to respond to changes in air consumption and match the air output with the air consumption. Summary of the Invention

[0004] To provide a basic understanding of some aspects of the disclosed embodiments, a brief summary is given below. This summary is not intended as a general commentary, nor is it intended to identify key / important components or describe the scope of protection of these embodiments, but rather as a prelude to the detailed description that follows.

[0005] In view of the shortcomings of the prior art described above, the present invention discloses a joint control method, device, equipment and storage medium for an air compressor cluster, so as to solve at least one of the above-mentioned technical problems.

[0006] This invention provides a joint control method for an air compressor cluster, comprising: monitoring the online air compressors in the air compressor cluster to obtain the demand load of the air compressor cluster, the set pressure of each air compressor, and the current load; grouping the air compressor cluster according to the working efficiency of each air compressor to obtain a first air compressor group with relatively high efficiency and a second air compressor group with relatively low efficiency; adjusting the set pressure of each air compressor according to the demand load of the air compressor cluster and the current load of each air compressor to control the air output of the air compressors until the air output of the air compressor cluster matches the air consumption; wherein, if the air compressors If the demand load of the air compressor cluster is greater than the sum of the current loads of all air compressors, then the set pressure of each air compressor in the first air compressor group is adjusted; if the demand load of the air compressor cluster is less than the sum of the current loads of all air compressors, then the set pressure of each air compressor in the second air compressor group is adjusted; if the demand load of the air compressor cluster fluctuates, then the set pressure of each air compressor in both the first and second air compressor groups is adjusted simultaneously, wherein the demand load fluctuation occurs when there are both air compressors in the air compressor cluster with increasing current loads and air compressors with decreasing current loads.

[0007] Optionally, before adjusting the set pressure of each air compressor based on the demand load of the air compressor cluster, the method further includes: obtaining the optimal load threshold, pressure upper limit, and pressure lower limit of each air compressor online, so that the set pressure of each air compressor is adjusted within the pressure adjustment range defined by the pressure upper limit and the pressure lower limit; comparing the current load of each air compressor in the first air compressor group and the second air compressor group with the optimal load threshold, respectively, to determine the first air compressor group and the second air compressor group included in the first air compressor group, and the third air compressor group and the fourth air compressor group included in the second air compressor group; wherein, the current load of each air compressor in the first air compressor group and the third air compressor group is less than the optimal load threshold, and the current load of each air compressor in the second air compressor group and the fourth air compressor group is greater than or equal to the optimal load threshold.

[0008] Optionally, if the demand load of the air compressor cluster is greater than the sum of the current loads of each air compressor, the set pressure of each air compressor in the first air compressor group is adjusted, including: if the number of air compressors in the first air compressor group is greater than a preset number threshold, the set pressure of each air compressor in the first air compressor group is increased; if the number of air compressors in the first air compressor group is equal to the preset number threshold, or the set pressure of each air compressor in the first air compressor group reaches the pressure upper limit, the set pressure of each air compressor in the second air compressor group is increased.

[0009] Optionally, if the demand load of the air compressor cluster is less than the sum of the current loads of each air compressor, then adjusting the set pressure of each air compressor in the second air compressor group includes: if the number of air compressors in the fourth air compressor group is greater than the preset number threshold, then reducing the set pressure of the air compressors in the fourth air compressor group; if the number of air compressors in the fourth air compressor group is equal to the preset number threshold, or the set pressure of each air compressor in the fourth air compressor group reaches the lower pressure limit, then reducing the set pressure of the air compressors in the third air compressor group.

[0010] Optionally, if the demand load of the air compressor cluster fluctuates, the set pressure of each air compressor in the first air compressor group and the second air compressor group is adjusted simultaneously, including: if the number of air compressors in both the first air compressor group and the third air compressor group is greater than the preset number threshold, the set pressure of the air compressors in the first air compressor group is increased, and the set pressure of the air compressors in the third air compressor group is decreased; wherein, if the set pressure of each air compressor in the first air compressor group reaches the pressure upper limit, the set pressure of the second air compressor group is increased, and if the set pressure of each air compressor in the third air compressor group reaches the pressure lower limit, the set pressure of each air compressor in the fourth air compressor group is decreased; if the number of air compressors in the first air compressor group is greater than the preset number threshold, and the number of air compressors in the third air compressor group is equal to the preset number threshold, the set pressure of the air compressors in the first air compressor group is increased. The system sets a pressure and decreases the set pressure of the air compressors in the fourth air compressor group; wherein, if the set pressure of each air compressor in the first air compressor group reaches the upper pressure limit, the set pressure of each air compressor in the second air compressor group is increased; if the number of air compressors in the first air compressor group is equal to the preset number threshold, and the number of air compressors in the third air compressor group is greater than the preset number threshold, the set pressure of each air compressor in the second air compressor group is increased, and the set pressure of each air compressor in the third air compressor group is decreased; wherein, if the set pressure of each air compressor in the third air compressor group reaches the lower pressure limit, the set pressure of each air compressor in the fourth air compressor group is decreased; if the number of air compressors in both the first and third air compressor groups is equal to the preset number threshold, the set pressure of the second air compressor group is increased, and the set pressure of each air compressor in the fourth air compressor group is decreased.

[0011] Optionally, after adjusting the set pressure of each air compressor based on the demand load of the air compressor cluster, the method further includes: obtaining the total exhaust pressure of the air compressor cluster, or the exhaust pressure of the online air compressors in the air compressor cluster; when the total exhaust pressure of the air compressor cluster, or the exhaust pressure of any air compressor, is higher than the upper pressure limit, adjusting the set pressure of each air compressor in the air compressor cluster to a preset basic set pressure; when the total exhaust pressure of the air compressor cluster, or the exhaust pressure of any air compressor, is lower than the lower pressure limit, adjusting the set pressure of each air compressor in the air compressor cluster to the basic pressure.

[0012] Optionally, after grouping the air compressors according to their working efficiency, the method further includes: monitoring the number of air compressors online in the air compressor cluster; if the number of online air compressors changes, then grouping the online air compressors again and re-determining the first air compressor group and the second air compressor group.

[0013] This invention provides a joint control device for an air compressor cluster, comprising: a monitoring module for monitoring online air compressors in the cluster to obtain the demand load of the cluster, the set pressure of each air compressor, and the current load; a grouping module for grouping the air compressor cluster according to the working efficiency of each air compressor to obtain a first air compressor group with relatively high efficiency and a second air compressor group with relatively low efficiency; a control module for adjusting the set pressure of each air compressor according to the demand load of the cluster and the current load of each air compressor to control the air output of the air compressors until the air output of the cluster matches the air consumption; and a first adjustment module. A first adjustment module is configured to adjust the set pressure of each air compressor in the first air compressor group if the demand load of the air compressor cluster is greater than the sum of the current loads of each air compressor; a second adjustment module is configured to adjust the set pressure of each air compressor in the second air compressor group if the demand load of the air compressor cluster is less than the sum of the current loads of each air compressor; a third adjustment module is configured to simultaneously adjust the set pressure of each air compressor in the first air compressor group and the second air compressor group if the demand load of the air compressor cluster fluctuates, wherein the demand load fluctuation is that there are air compressors in the air compressor cluster with both an increase in current load and a decrease in current load.

[0014] The present invention provides an electronic device, comprising: a processor and a memory; the memory is used to store a computer program, and the processor is used to execute the computer program stored in the memory to cause the electronic device to perform the above-described method.

[0015] The present invention provides a computer-readable medium having a computer program stored thereon, the computer program being used to cause a computer to perform the above-described method.

[0016] The beneficial effects of this invention are:

[0017] By dividing the air compressor cluster into a first air compressor group with relatively high efficiency and a second air compressor group with relatively low efficiency, and adjusting the set pressure of each air compressor in the air compressor group according to the demand load of the air compressor cluster and the current load of each air compressor, the air output of the corresponding air compressor is controlled until the air output and air consumption of the air compressor cluster are matched. In this way, on the one hand, by grouping the air compressor cluster for joint control of the air compressor set pressure, since only the set pressure parameter is changed and the start-up and shutdown operations of the air compressors are not involved, the air output and air consumption of the air compressor cluster can be matched more quickly. On the other hand, based on the different conditions between the demand load of the air compressor cluster and the current load of each air compressor, targeted joint control of the air compressors in each air compressor group can be performed, improving the accuracy of air compressor control and thus achieving a more precise match between air output and air consumption. Attached Figure Description

[0018] Figure 1 This is a schematic flowchart illustrating a joint control method for an air compressor cluster, as shown in an exemplary embodiment of the present invention.

[0019] Figure 2 This is a schematic diagram of the structure of a joint control device for an air compressor cluster, as shown in an exemplary embodiment of the present invention;

[0020] Figure 3 This is a schematic diagram illustrating the structure of a computer system suitable for implementing the electronic device of the present invention, as shown in an exemplary embodiment of the present invention. Detailed Implementation

[0021] The following specific examples illustrate the implementation of the present invention. Those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification. The present invention can also be implemented or applied through other different specific embodiments, and various details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of the present invention. It should be noted that, unless otherwise specified, the following embodiments and sub-samples in the embodiments can be combined with each other.

[0022] It should be noted that the illustrations provided in the following embodiments are only schematic representations of the basic concept of the present invention. Therefore, the drawings only show the components related to the present invention and are not drawn according to the actual number, shape and size of the components in the actual implementation. In the actual implementation, the form, quantity and proportion of each component can be arbitrarily changed, and the layout of the components may also be more complex.

[0023] In the following description, numerous details are explored to provide a more thorough explanation of embodiments of the invention. However, it will be apparent to those skilled in the art that embodiments of the invention may be practiced without these specific details. In other embodiments, well-known structures and devices are shown in block diagram form rather than in detail to avoid obscuring embodiments of the invention.

[0024] The terms "first," "second," etc., in the specification, claims, and accompanying drawings of this disclosure are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate for the embodiments of this disclosure described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion. Unless otherwise stated, the term "a plurality of" means two or more. In this disclosure, the character " / " indicates that the preceding and following objects are in an "or" relationship. For example, A / B means: A or B. The term "and / or" describes an association between objects, indicating that three relationships can exist. For example, A and / or B means: A or B, or, A and B.

[0025] Please see Figure 1 This is a schematic flowchart illustrating a joint control method for an air compressor cluster, as shown in an exemplary embodiment of the present invention. (Combined with...) Figure 1 As shown, in an exemplary embodiment, the joint control method for an air compressor cluster includes at least steps S101 to S106, which are described in detail below:

[0026] Step S101: Monitor the online air compressors in the air compressor cluster to obtain the demand load of the air compressor cluster, the set pressure of each air compressor, and the current load.

[0027] Step S102: The air compressor cluster is grouped according to the working efficiency of each air compressor to obtain the first air compressor group with relatively high efficiency and the second air compressor group with relatively low efficiency.

[0028] Step S103: Adjust the set pressure of each air compressor according to the demand load of the air compressor cluster and the current load of each air compressor to control the air output of the air compressor until the air output of the air compressor cluster matches the air consumption.

[0029] Step S104: If the demand load of the air compressor cluster is greater than the sum of the current loads of each air compressor, then adjust the set pressure of each air compressor in the first air compressor group.

[0030] Step S105: If the demand load of the air compressor cluster is less than the sum of the current loads of each air compressor, then adjust the set pressure of each air compressor in the second air compressor unit.

[0031] Step S106: If the demand load of the air compressor cluster fluctuates, the set pressure of each air compressor in the first air compressor group and the second air compressor group is adjusted simultaneously. The demand load fluctuation is when there are air compressors in the air compressor cluster with current load increase and air compressors with current load decrease at the same time.

[0032] The joint control method for air compressor clusters provided in this disclosure divides the air compressor cluster into a first air compressor group with relatively high efficiency and a second air compressor group with relatively low efficiency. The set pressure of each air compressor in each air compressor group is adjusted according to the demand load of the air compressor cluster and the current load of each air compressor, thereby controlling the air production of the corresponding air compressor until the air production and consumption of the air compressor cluster are matched. In this way, on the one hand, by grouping the air compressor cluster for joint control of the air compressor set pressure, since only the set pressure parameter is changed and the start-up and shutdown operations of the air compressors are not involved, the matching of air production and consumption of the air compressor cluster can be achieved more quickly. On the other hand, based on the different conditions between the demand load of the air compressor cluster and the current load of each air compressor, targeted joint control of the air compressors in each air compressor group can be performed, improving the accuracy of air compressor control and thus achieving a more precise match between air production and consumption.

[0033] In some embodiments, the demand load of the air compressor cluster, the set pressure of each air compressor, and the current load are monitored in real time. The air compressor cluster typically consists of multiple air compressors connected in parallel. Different operating conditions at different times lead to different air demand and different requirements for the air output of the air compressor cluster, resulting in different numbers of air compressors needing to be started. That is, the number of air compressors online varies at different times. However, when the air demand changes only slightly, starting or stopping offline air compressors can cause instability in the operation of the air compressor cluster. Frequent starting and stopping of air compressors increases the energy consumption of the air compressor cluster and reduces the lifespan of the air compressors. Therefore, this embodiment only monitors the online air compressors and adjusts the discharge volume of the air compressor cluster based on the online air compressors to meet small changes in air demand.

[0034] In some embodiments, grouping is performed as follows: identifying the online air compressors in the air compressor cluster; sorting the online air compressors in descending order according to their operating efficiency (or rated power) to obtain an efficiency ranking of the online air compressors; grouping the online air compressors according to the efficiency ranking to determine a first air compressor group and a second air compressor group, wherein the operating efficiency of each air compressor in the first air compressor group is higher than that of each air compressor in the second air compressor group. For example, sort n online air compressors by their working efficiency from highest to lowest, and assign them numbers based on this efficiency ranking: Air compressor 1's efficiency > Air compressor 2's efficiency > ... > Air compressor 3's efficiency. Then, divide these air compressors into two groups. When n is even, the first air compressor group includes air compressors 1 to 2 / n, and the remaining air compressors are assigned to the second air compressor group. When n is odd, the first air compressor group includes air compressors 1 to (n-1) / 2, and the remaining air compressors are assigned to the second air compressor group. It's important to understand that the number of air compressors in the two groups can be adjusted according to actual conditions. For example, if the increase in air demand at the production site far outweighs the decrease, the number of air compressors in the first air compressor group can be increased accordingly.

[0035] Optionally, after grouping the online air compressors, the method further includes: monitoring the number of online air compressors in the air compressor cluster; if the number of online air compressors changes, then grouping the online air compressors again and re-determining the first air compressor group and the second air compressor group.

[0036] In some embodiments, in order to ensure the real-time performance and accuracy of joint control of the air compressor cluster, it is necessary to monitor the online status of the air compressors in the cluster in real time. If a new air compressor is added online, or if an online air compressor goes offline or malfunctions, the online air compressors need to be regrouped to prevent incorrect control of offline air compressors or failure to control online air compressors.

[0037] In this way, by monitoring the number of online air compressors in real time, the real-time performance and accuracy of the joint control of the air compressor cluster are ensured.

[0038] In some embodiments, the air demand of an air compressor cluster fluctuates during actual operation, including decreases and increases in air demand, thus affecting the load fluctuation of the air compressor cluster. Each air compressor has a certain operating range for its current load to adapt to different load demands. However, since each air compressor in the cluster operates independently, fluctuations in air demand can randomly affect any one air compressor, causing unpredictable fluctuations in the current load of that compressor and even the others, disrupting the stability of the air compressor cluster's operation. To avoid this situation, we divide the air compressor cluster into a first air compressor unit with higher operating efficiency and a second air compressor unit with lower operating efficiency. The first air compressor unit is mainly responsible for meeting the increased air demand, that is, adjusting the set pressure of each air compressor in the first air compressor unit so that the load of each air compressor in the first air compressor unit can adapt to the increased air demand, thus meeting the demand load of the air compressor cluster. The second air compressor unit is mainly responsible for meeting the decreased air demand, that is, adjusting the set pressure of each air compressor in the second air compressor unit so that the current load of each air compressor in the second air compressor unit can adapt to the decreased air demand, thus meeting the demand load of the air compressor cluster. In this way, the air output of the air compressor cluster matches the air demand required by the production site to the greatest extent.

[0039] In this way, by specifically changing the set pressure of the air compressors in the two air compressor units, the air output of the air compressor cluster can more accurately meet the air demand, while avoiding frequent start-ups and shutdowns of the air compressors in the cluster, increasing the service life of the air compressors, and reducing the operating energy consumption of the air compressor cluster.

[0040] Optionally, before adjusting the set pressure, the process includes: acquiring the optimal load threshold, pressure upper limit, and pressure lower limit of each online air compressor, so that the set pressure of each air compressor is adjusted within the pressure adjustment range defined by the pressure upper limit and pressure lower limit; comparing the current load of each air compressor in the first air compressor group and the second air compressor group with the optimal load threshold, respectively, to determine the first air compressor group and the second air compressor group included in the first air compressor group, and the third air compressor group and the fourth air compressor group included in the second air compressor group; wherein, the current load of each air compressor in the first air compressor group and the third air compressor group is less than the optimal load threshold, and the current load of each air compressor in the second air compressor group and the fourth air compressor group is greater than or equal to the optimal load threshold.

[0041] In some embodiments, to make the joint control of air compressors more targeted, and to prioritize the handling of increases or decreases in air demand by air compressors with higher or lower efficiency, the air compressor cluster is further divided into two groups after being grouped according to efficiency. The optimal load threshold for an air compressor represents the current load when the air compressor's own efficiency is high, and is set according to the actual situation of the air compressor. For example, the optimal load threshold can be set to the current load when the air compressor's own efficiency is at its highest. Therefore, by comparing the optimal load threshold with the current load of the air compressors in the first air compressor group, if the current load of the air compressor is lower than the optimal load threshold, the air compressor is classified into the first air compressor group with relatively low efficiency in the first air compressor group; if the current load of the air compressor is not lower than the optimal load threshold, the air compressor is classified into the second air compressor group with relatively high efficiency in the first air compressor group. By comparing the optimal load threshold with the current load of the air compressors in the second air compressor group, if the current load of the air compressor is lower than the optimal load threshold, the air compressor is classified into the third air compressor group with relatively low efficiency in the second air compressor group; if the current load of the air compressor is not lower than the optimal load threshold, the air compressor is classified into the fourth air compressor group with relatively high efficiency in the second air compressor group.

[0042] Optionally, step S104 includes: if the number of air compressors in the first air compressor group is greater than a preset number threshold, then increase the set pressure of each air compressor in the first air compressor group; if the number of air compressors in the first air compressor group is equal to the preset number threshold, or the set pressure of each air compressor in the first air compressor group reaches the pressure upper limit, then increase the set pressure of each air compressor in the second air compressor group.

[0043] In some embodiments, when the demand for air increases and the load on the air compressor cluster increases, the first air compressor group is prioritized. By increasing the set pressure of the air compressors in the first air compressor group, the sum of the current loads of all online air compressors increases, bringing it closer to the demand load of the air compressor cluster, thereby increasing the air production of the air compressor cluster. If the set pressure of all air compressors in the first air compressor group reaches the pressure limit, and the air production of the air compressor cluster still does not meet the air demand, or if the number of air compressors in the first air compressor group is 0, then the set pressure of the second air compressor group is increased until the air production of the air compressor cluster meets the air demand. This embodiment maximizes the concentration of relatively efficient air compressors in the air compressor cluster to handle most of the air demand.

[0044] Optionally, step S105 includes: if the number of air compressors in the fourth air compressor group is greater than a preset number threshold, then reduce the set pressure of the air compressors in the fourth air compressor group; if the number of air compressors in the fourth air compressor group is equal to the preset number threshold, or the set pressure of each air compressor in the fourth air compressor group reaches the lower pressure limit, then reduce the set pressure of the air compressors in the third air compressor group.

[0045] In some embodiments, when the demand for air decreases, if the number of air compressors in the fourth air compressor group is greater than zero, the set pressure of the air compressors in the fourth air compressor group is reduced, so that the sum of the current loads of all online air compressors decreases, moving closer to the demand load of the air compressor cluster until the air production of the air compressor cluster meets the demand. If the number of air compressors in the fourth air compressor group is equal to zero, or if the air production of the air compressor cluster still does not meet the demand even when the average set pressure of all air compressors in the fourth air compressor group reaches the lower pressure limit, then the set pressure of the third air compressor group continues to decrease until the air production of the air compressor cluster meets the demand. This embodiment maximizes the concentration of relatively inefficient air compressors in the air compressor cluster to handle fluctuations in air demand when demand decreases.

[0046] This ensures that the air compressor group operates in an ideal state where the more efficient air compressors operate in their high-efficiency range and the less efficient air compressors operate in their low-efficiency range, avoiding resource waste. For example, when air demand increases, the less efficient air compressors respond, while the more efficient air compressors increase their set pressure more and operate more slowly, resulting in more energy consumption in the process of producing compressed air. Conversely, when air demand decreases, the more efficient air compressors respond, causing the high-power air compressors to operate in an inefficient state, resulting in energy waste.

[0047] In some embodiments, if the gas demand fluctuates only slightly and the demand load of the air compressor cluster fluctuates accordingly without significant increase or decrease, this situation will lead to large random fluctuations in the current load of the air compressors in the air compressor cluster. That is, the current load of some air compressors will randomly increase and the current load of some air compressors will randomly decrease, which will disrupt the stable operation of the air compressor cluster. In this case, in order to ensure the reliability of the air compressor cluster operation, it is necessary to jointly control the two groups of air compressors.

[0048] Optionally, the simultaneous control of the two air compressors in step S106 includes four cases. In all four cases, the set pressure of each air compressor in the first air compressor group is increased, while the set pressure of each air compressor in the second air compressor group is decreased.

[0049] Scenario 1: If the number of air compressors in both the first and third air compressor groups exceeds the preset threshold, then the set pressure of the air compressors in the first air compressor group is increased, and the set pressure of the air compressors in the third air compressor group is decreased. If the set pressure of each air compressor in the first air compressor group reaches the upper pressure limit, then the set pressure of the second air compressor group is increased. If the set pressure of each air compressor in the third air compressor group reaches the lower pressure limit, then the set pressure of each air compressor in the fourth air compressor group is decreased.

[0050] In some embodiments, the preset quantity threshold can be set to 0.

[0051] In some embodiments, when the air compressor cluster is in an unstable state, the set pressure of the first air compressor cluster and the third air compressor cluster is adjusted slightly first until the adjustment of the first air compressor cluster or the third air compressor cluster reaches the limit. If the air compressor cluster is still not in a stable state, then the second air compressor cluster or the fourth air compressor cluster in the same group as the first air compressor cluster is adjusted slightly until the air compressor cluster is in a stable state.

[0052] Scenario 2: If the number of air compressors in the first air compressor group is greater than the preset threshold, and the number of air compressors in the third air compressor group is equal to the preset threshold, then the set pressure of the air compressors in the first air compressor group is increased, and the set pressure of the air compressors in the fourth air compressor group is decreased; if the set pressure of each air compressor in the first air compressor group reaches the pressure limit, then the set pressure of each air compressor in the second air compressor group is increased.

[0053] In some embodiments, after determining that the number of air compressors in the third air compressor group is 0, the set pressure of the first air compressor group and the fourth air compressor group is adjusted slightly first, until the adjustment of the set pressure of the first air compressor group reaches the pressure upper limit. If the air compressor group is still not in a stable state, the set pressure of the second air compressor group and the third air compressor group is adjusted slightly at the same time, until the air compressor group is in a stable state.

[0054] Scenario 3: If the number of air compressors in the first air compressor group is equal to the preset threshold, and the number of air compressors in the third air compressor group is greater than the preset threshold, then the set pressure of each air compressor in the second air compressor group is increased, and the set pressure of each air compressor in the third air compressor group is decreased; if the set pressure of each air compressor in the third air compressor group reaches the lower pressure limit, then the set pressure of each air compressor in the fourth air compressor group is decreased.

[0055] In some embodiments, after determining that the number of air compressors in the first air compressor group is 0, the set pressure of the third air compressor group and the second air compressor group is adjusted slightly first, until the adjustment of the set pressure of the third air compressor group reaches the pressure upper limit. If the air compressor group is still not in a stable state, the set pressure of the second air compressor group and the fourth air compressor group are adjusted slightly at the same time, until the air compressor group is in a stable state.

[0056] Scenario 4: If the number of air compressors in the first and third air compressor groups is equal to the preset number threshold, then increase the set pressure of the second air compressor group and decrease the set pressure of each air compressor in the fourth air compressor group.

[0057] In some embodiments, after determining that the number of air compressors in the first and third air compressor groups is 0, the set pressure of the second and fourth air compressor groups is adjusted slightly at the same time until the air compressor cluster is in a stable state.

[0058] In some embodiments, the set pressure of each air compressor is adjusted within the pressure regulation range, that is, the set pressure cannot exceed the upper pressure limit and the lower pressure limit.

[0059] In this way, by jointly controlling the two sets of air compressors, the fluctuations in the demand load of the air compressor cluster caused by the slight fluctuations in gas demand can be reduced, thus keeping the air compressor cluster in a stable operating state, improving the reliability of the air compressor cluster operation and reducing the energy consumption of the air compressor cluster.

[0060] Optionally, after adjusting the set pressure of the air compressor, the method further includes: obtaining the total exhaust pressure of the air compressor cluster, or the exhaust pressure of the online air compressor in the air compressor cluster; when the total exhaust pressure of the air compressor cluster, or the exhaust pressure of any air compressor, is higher than the upper pressure limit, adjusting the set pressure of each air compressor in the air compressor cluster to a preset basic set pressure; when the total exhaust pressure of the air compressor cluster, or the exhaust pressure of any air compressor, is lower than the lower pressure limit, adjusting the set pressure of each air compressor in the air compressor cluster to the basic set pressure.

[0061] In some embodiments, the preset base setting pressure is the expected value that the air compressor's set pressure can achieve, determined based on the current air consumption demand and the actual pressure requirements of each air consumption point. To prevent damage to the air compressors caused by the total exhaust pressure of the air compressor cluster, or the exhaust pressure of any one (or most) air compressors exceeding the pressure regulation range (above the upper pressure limit or below the lower pressure limit), when the total exhaust pressure of the air compressor cluster, or the exhaust pressure of any one (or most) air compressors, exceeds the pressure regulation range, the set pressure of each air compressor is uniformly set to the preset base setting pressure. Although the exhaust pressure tends towards the set pressure, there may still be an error between the actual exhaust pressure and the set pressure during air compressor operation; therefore, it is necessary to determine here whether the air compressor's exhaust pressure exceeds the pressure regulation range.

[0062] In some embodiments, the adjustment frequency of the set pressure for each air compressor in the air compressor cluster needs to be determined according to the actual situation to avoid damage to the air compressor caused by excessive adjustment frequency.

[0063] The joint control method for air compressor clusters provided in this disclosure divides the air compressor cluster into a first air compressor group with relatively high efficiency and a second air compressor group with relatively low efficiency. The set pressure of each air compressor in each air compressor group is adjusted according to the demand load of the air compressor cluster and the current load of each air compressor, thereby controlling the air production of the corresponding air compressor until the air production and consumption of the air compressor cluster are matched. This method has the following advantages:

[0064] First, based on the different load requirements of the air compressor cluster and the current load of each air compressor, the air compressors in each air compressor group can be controlled in a targeted manner, which improves the accuracy of air compressor control and thus achieves a more precise match between air production and air consumption.

[0065] Second, by monitoring the number of online air compressors in real time, the real-time performance and accuracy of the joint control of the air compressor cluster are ensured.

[0066] Third, by specifically changing the set pressure of the air compressors in the two air compressor units, the air output of the air compressor cluster can more accurately meet the air demand, while avoiding frequent start-ups and shutdowns of the air compressors in the air compressor cluster, increasing the service life of the air compressors, and reducing the operating energy consumption of the air compressor cluster.

[0067] Fourth, this system ensures that the air compressor group operates in an ideal state where the more efficient compressors operate in their high-efficiency range and the less efficient compressors operate in their low-efficiency range, thus avoiding resource waste. Specifically, when air demand increases, the less efficient compressors respond, while the more efficient compressors increase their set pressure more significantly and operate more slowly, resulting in greater energy consumption during compressed air production. Conversely, when air demand decreases, the more efficient compressors respond, causing the high-power compressors to operate inefficiently, leading to energy waste.

[0068] Fifth, by jointly controlling the two sets of air compressors, the fluctuations in the demand load of the air compressor cluster caused by the slight fluctuations in gas demand can be reduced, thus keeping the air compressor cluster in a stable operating state, improving the reliability of the air compressor cluster operation and reducing the energy consumption of the air compressor cluster.

[0069] Please see Figure 2 This is a schematic diagram illustrating the structure of a joint control device for an air compressor cluster, as shown in an exemplary embodiment of the present invention. (In conjunction with...) Figure 2 As shown, the joint control device for this exemplary air compressor cluster includes: a monitoring module 201, a grouping module 202, a control module 203, a first adjustment module 204, a second adjustment module 205, and a third adjustment module 206, wherein:

[0070] The monitoring module 201 is used to monitor the online air compressors in the air compressor cluster and obtain the demand load of the air compressor cluster, the set pressure of each air compressor and the current load.

[0071] Grouping module 202 is used to group the air compressor cluster according to the working efficiency of each air compressor to obtain a first air compressor group with relatively high efficiency and a second air compressor group with relatively low efficiency;

[0072] The control module 203 is used to adjust the set pressure of each air compressor according to the demand load of the air compressor cluster and the current load of each air compressor, so as to control the air output of the air compressor until the air output of the air compressor cluster matches the air consumption.

[0073] The first adjustment module 204 is used to adjust the set pressure of each air compressor in the first air compressor group if the demand load of the air compressor cluster is greater than the sum of the current loads of each air compressor.

[0074] The second adjustment module 205 is used to adjust the set pressure of each air compressor in the second air compressor group if the demand load of the air compressor cluster is less than the sum of the current loads of each air compressor.

[0075] The third adjustment module 206 is used to adjust the set pressure of each air compressor in the first air compressor group and the second air compressor group simultaneously if the demand load of the air compressor cluster fluctuates. The demand load fluctuation is when there are air compressors in the air compressor cluster with both current load increase and current load decrease.

[0076] It should be noted that the joint control device for the air compressor cluster provided in the above embodiments and the joint control method for the air compressor cluster provided in the above embodiments belong to the same concept. The specific way of performing each step has been described in detail in the system embodiments, and will not be repeated here.

[0077] The joint control device for an air compressor cluster provided in this embodiment divides the air compressor cluster into a first air compressor group with relatively high efficiency and a second air compressor group with relatively low efficiency. The set pressure of each air compressor in each air compressor group is adjusted according to the demand load of the air compressor cluster and the current load of each air compressor, thereby controlling the air production of the corresponding air compressor until the air production and consumption of the air compressor cluster are matched. In this way, on the one hand, by grouping the air compressor cluster for joint control of the air compressor set pressure, since only the set pressure parameter is changed and the start-up and shutdown operations of the air compressors are not involved, the matching of air production and consumption of the air compressor cluster can be achieved more quickly. On the other hand, based on the different conditions between the demand load of the air compressor cluster and the current load of each air compressor, targeted joint control of the air compressors in each air compressor group can be performed, improving the accuracy of air compressor control and thus achieving a more precise match between air production and consumption.

[0078] Please see Figure 3 A schematic diagram of a computer system suitable for implementing embodiments of the present invention is shown. It should be noted that... Figure 3 The computer system 300 of the electronic device shown is merely an example and should not impose any limitation on the functionality and scope of use of the embodiments of this application.

[0079] like Figure 3 As shown, the computer system 300 includes a Central Processing Unit (CPU) 301, which can perform various appropriate actions and processes, such as executing the methods described in the above embodiments, based on programs stored in Read-Only Memory (ROM) 302 or programs loaded from Storage Unit 308 into Random Access Memory (RAM) 303. The RAM 303 also stores various programs and data required for system operation. The CPU 301, ROM 302, and RAM 303 are interconnected via a bus 304. An Input / Output (I / O) interface 305 is also connected to the bus 304.

[0080] The following components are connected to I / O interface 305: an input section 306 including a keyboard, mouse, etc.; an output section 307 including a cathode ray tube (CRT), liquid crystal display (LCD), etc., and speakers, etc.; a storage section 308 including a hard disk, etc.; and a communication section 309 including a network interface card such as a LAN (Local Area Network) card, modem, etc. The communication section 309 performs communication processing via a network such as the Internet. A drive 310 is also connected to I / O interface 305 as needed. Removable media 311, such as a disk, optical disk, magneto-optical disk, semiconductor memory, etc., are installed on drive 310 as needed so that computer programs read from them can be installed into storage section 308 as needed.

[0081] Specifically, according to embodiments of this application, the processes described above with reference to the flowcharts can be implemented as computer software programs. For example, embodiments of this application include a computer program product comprising a computer program carried on a computer-readable medium, the computer program including a computer program for performing the methods shown in the flowcharts. In such embodiments, the computer program can be downloaded and installed from a network via communication section 309, and / or installed from removable medium 311. When the computer program is executed by central processing unit (CPU) 301, it performs various functions defined in the system of this application.

[0082] It should be noted that the computer-readable medium shown in the embodiments of this application can be a computer-readable signal medium or a computer-readable storage medium, or any combination of the two. A computer-readable storage medium can be, for example, an electrical, magnetic, optical, electromagnetic, infrared, or semiconductor system, apparatus, or device, or any combination thereof. More specific examples of a computer-readable storage medium may include, but are not limited to: an electrical connection having one or more wires, a portable computer disk, a hard disk, random access memory (RAM), read-only memory (ROM), erasable programmable read-only memory (EPROM), flash memory, optical fiber, portable compact disc read-only memory (CD-ROM), optical storage device, magnetic storage device, or any suitable combination thereof. In this application, a computer-readable signal medium may include a data signal propagated in baseband or as part of a carrier wave, carrying a computer-readable computer program. Such propagated data signals can take various forms, including but not limited to electromagnetic signals, optical signals, or any suitable combination thereof. Computer-readable signal media can also be any computer-readable medium other than computer-readable storage media, which can send, propagate, or transmit a program for use by or in connection with an instruction execution system, apparatus, or device. The computer program contained on the computer-readable medium can be transmitted using any suitable medium, including but not limited to wireless, wired, etc., or any suitable combination thereof.

[0083] This disclosure also provides a computer-readable storage medium storing a computer program thereon, which, when executed by a computer's processor, causes the computer to perform the methods described above. This computer-readable storage medium may be included in the electronic device described in the above embodiments, or it may exist independently and not assembled into the electronic device.

[0084] The computer-readable storage medium in the embodiments of this disclosure will be understood by those skilled in the art: all or part of the steps of the above method embodiments can be implemented by hardware related to computer programs. The aforementioned computer program can be stored in a computer-readable storage medium. When the program is executed, it performs the steps of the above method embodiments; and the aforementioned storage medium includes various media capable of storing program code, such as ROM, RAM, magnetic disk, or optical disk.

[0085] The electronic device disclosed in this embodiment includes a processor, a memory, a transceiver, and a communication interface. The memory and the communication interface are connected to the processor and the transceiver and complete communication between them. The memory is used to store computer programs, the communication interface is used to perform communication, and the processor and the transceiver are used to run the computer programs, so that the electronic device performs the steps of the method described above.

[0086] In this embodiment, the memory may include random access memory (RAM) and may also include non-volatile memory, such as at least one disk storage device.

[0087] The processors mentioned above can be general-purpose processors, including central processing units (CPUs), graphics processing units (GPUs), network processors (NPs), etc.; they can also be digital signal processors (DSPs), application-specific integrated circuits (ASICs), field-programmable gate arrays (FPGAs), or other programmable logic devices, discrete gate or transistor logic devices, or discrete hardware components.

[0088] The foregoing description and accompanying drawings fully illustrate embodiments of this disclosure to enable those skilled in the art to practice them. Other embodiments may include structural, logical, electrical, procedural, and other changes. The embodiments represent only possible variations. Individual components and functions are optional unless explicitly required, and the order of operation may vary. Parts and subsamples of some embodiments may be included in or replace parts and subsamples of other embodiments. Moreover, the terminology used in this application is for describing embodiments only and is not intended to limit the claims. As used in the description of embodiments and claims, the singular forms “a,” “an,” and “the” are intended to equally include the plural forms unless the context clearly indicates otherwise. Similarly, the term “and / or” as used herein means including one or more of the associated listed items and all possible combinations thereof. Additionally, when used in this application, the term "comprise" and its variations "comprises" and / or "comprising" refer to the presence of stated subsamples, wholes, steps, operations, elements, and / or components, but do not exclude the presence or addition of one or more other subsamples, wholes, steps, operations, elements, components, and / or groups thereof. Without further limitations, an element defined by the phrase "comprising a..." does not exclude the presence of other identical elements in the process, method, or apparatus that includes the element. In this document, each embodiment may focus on the differences from other embodiments, and similar or identical parts between embodiments can be referred to mutually. For methods, products, etc., disclosed in the embodiments, if they correspond to the method section disclosed in the embodiments, the relevant parts can be referred to the description of the method section.

[0089] Those skilled in the art will recognize that the units and algorithm steps of the various examples described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are implemented in hardware or software depends on the specific application and design constraints of the technical solution. Those skilled in the art can use different methods to implement the described functions for each specific application, but such implementation should not be considered beyond the scope of the embodiments of this disclosure. Those skilled in the art will clearly understand that, for the sake of convenience and brevity, the specific working processes of the systems, devices, and units described above can be referred to the corresponding processes in the foregoing method embodiments, and will not be repeated here.

[0090] The methods and products (including but not limited to devices and equipment) disclosed in the embodiments herein can be implemented in other ways. For example, the device embodiments described above are merely illustrative. For instance, the division of units may be merely a logical functional division, and in actual implementation, there may be other division methods. For example, multiple units or components may be combined or integrated into another system, or some sub-samples may be ignored or not executed. In addition, the mutual coupling or direct coupling or communication connection shown or discussed may be through some interfaces, and the indirect coupling or communication connection of devices or units may be electrical, mechanical, or other forms. Units described as separate components may or may not be physically separate, and components shown as units may or may not be physical units, that is, they may be located in one place or distributed across multiple network units. Some or all of the units may be selected to implement this embodiment according to actual needs. Furthermore, the functional units in the embodiments of this disclosure may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.

[0091] The flowcharts and block diagrams in the accompanying drawings illustrate the architecture, functionality, and operation of possible implementations of systems, methods, and computer program products according to embodiments of the present disclosure. In this regard, each block in a flowchart or block diagram may represent a module, segment, or portion of code, which contains one or more executable instructions for implementing a specified logical function. In some alternative implementations, the functions marked in the blocks may occur in a different order than that shown in the drawings. For example, two consecutive blocks may actually be executed substantially in parallel, and they may sometimes be executed in reverse order, depending on the functions involved. In the descriptions corresponding to the flowcharts and block diagrams in the accompanying drawings, the operations or steps corresponding to different blocks may also occur in a different order than disclosed in the description, and sometimes there is no specific order between different operations or steps. For example, two consecutive operations or steps may actually be executed substantially in parallel, and they may sometimes be executed in reverse order, depending on the functions involved. Each block in a block diagram and / or flowchart, and combinations of blocks in a block diagram and / or flowchart, can be implemented using a dedicated hardware-based system that performs the specified function or action, or using a combination of dedicated hardware and computer instructions.

Claims

1. A method for joint control of a cluster of air compressors, characterized in that, The method comprises the following steps: monitoring the air compressors online in the air compressor cluster to obtain the demand load of the air compressor cluster, the set pressure and the current load of each air compressor; grouping the air compressor cluster according to the working efficiency of each air compressor to obtain a first air compressor group with relatively high efficiency and a second air compressor group with relatively low efficiency; adjusting the set pressure of each air compressor according to the demand load of the air compressor cluster and the current load of each air compressor to control the gas production of the air compressor until the gas production of the air compressor cluster matches the gas consumption; if the demand load of the air compressor cluster is greater than the sum of the current loads of each air compressor, the set pressure of each air compressor in the first air compressor group is adjusted; if the demand load of the air compressor cluster is less than the sum of the current loads of each air compressor, the set pressure of each air compressor in the second air compressor group is adjusted; if the demand load of the air compressor cluster fluctuates, the set pressure of each air compressor in the first air compressor group and the second air compressor group is adjusted simultaneously, and the demand load fluctuates when there are air compressors with increased current load and air compressors with reduced current load in the air compressor cluster.

2. The method of claim 1, wherein, Before adjusting the set pressure of each air compressor based on the demand load of the air compressor cluster, the method further comprises the following steps: obtaining the optimal load threshold, the upper pressure limit and the lower pressure limit of each air compressor online to adjust the set pressure of each air compressor within the pressure adjustment range defined by the upper pressure limit and the lower pressure limit; comparing the current load of each air compressor in the first air compressor group and the second air compressor group with the optimal load threshold to determine the first air compressor group and the second air compressor group included in the first air compressor group, and the third air compressor group and the fourth air compressor group included in the second air compressor group; wherein the current load of each air compressor in the first air compressor group and the third air compressor group is less than the optimal load threshold, and the current load of each air compressor in the second air compressor group and the fourth air compressor group is greater than or equal to the optimal load threshold.

3. The method of claim 2, wherein, If the demand load of the air compressor cluster is greater than the sum of the current loads of each air compressor, the set pressure of each air compressor in the first air compressor group is adjusted, which comprises the following steps: if the number of air compressors in the first air compressor group is greater than a preset number threshold, the set pressure of each air compressor in the first air compressor group is increased; if the number of air compressors in the first air compressor group is equal to the preset number threshold, or the set pressure of each air compressor in the first air compressor group reaches the upper pressure limit, the set pressure of each air compressor in the second air compressor group is increased.

4. The method of claim 3, wherein, If the demand load of the air compressor cluster is less than the sum of the current loads of each air compressor, the set pressure of each air compressor in the second air compressor group is adjusted, which comprises the following steps: if the number of air compressors in the fourth air compressor group is greater than the preset number threshold, the set pressure of each air compressor in the fourth air compressor group is reduced. If the number of air compressors in the fourth air compressor group is equal to the preset number threshold, or the set pressure of each air compressor in the fourth air compressor group reaches the pressure lower limit, the set pressure of the air compressors in the third air compressor group is reduced.

5. The method of claim 4, wherein, If the demand load of the air compressor cluster fluctuates, the set pressure of each air compressor in the first air compressor group and the second air compressor group is adjusted simultaneously, including: If the number of air compressors in the first air compressor group and the third air compressor group is greater than the preset number threshold, the set pressure of the air compressors in the first air compressor group is increased, and the set pressure of the air compressors in the third air compressor group is reduced; If the number of air compressors in the first air compressor group and the third air compressor group is greater than the preset number threshold, the set pressure of the air compressors in the first air compressor group is increased, and the set pressure of the air compressors in the third air compressor group is reduced; If the number of air compressors in the first air compressor group and the third air compressor group is greater than the preset number threshold, the set pressure of the air compressors in the first air compressor group is increased, and the set pressure of the air compressors in the third air compressor group is reduced; If the number of air compressors in the first air compressor group and the third air compressor group is greater than the preset number threshold, the set pressure of the air compressors in the first air compressor group is increased, and the set pressure of the air compressors in the third air compressor group is reduced; If the number of air compressors in the first air compressor group and the third air compressor group is greater than the preset number threshold, the set pressure of the air compressors in the first air compressor group is increased, and the set pressure of the air compressors in the third air compressor group is reduced; If the number of air compressors in the first air compressor group and the third air compressor group is greater than the preset number threshold, the set pressure of the air compressors in the first air compressor group is increased, and the set pressure of the air compressors in the third air compressor group is reduced; If the number of air compressors in the first air compressor group and the third air compressor group is greater than the preset number threshold, the set pressure of the air compressors in the first air compressor group is increased, and the set pressure of the air compressors in the third air compressor group is reduced.

6. The method of claim 2, wherein, After adjusting the set pressure of each air compressor based on the demand load of the air compressor cluster, further comprising: Obtaining the total exhaust pressure of the air compressor cluster, or the exhaust pressure of the online air compressor in the air compressor cluster; When the total exhaust pressure of the air compressor cluster, or the exhaust pressure of any air compressor is higher than the pressure upper limit, the set pressure of each air compressor in the air compressor cluster is adjusted to a preset basic set pressure; When the total exhaust pressure of the air compressor cluster, or the exhaust pressure of any air compressor is lower than the pressure lower limit, the set pressure of each air compressor in the air compressor cluster is adjusted to the basic set pressure.

7. The method according to any one of claims 1 to 6, characterized in that, After grouping each air compressor by work efficiency, further comprising: Monitoring the number of online air compressors in the air compressor cluster; If the number of online air compressors changes, the online air compressors are grouped again, and the first air compressor group and the second air compressor group are determined again.

8. A joint control device of an air compressor cluster, characterized by, The method comprises the following steps: monitoring the online air compressors in the air compressor cluster to obtain the demand load of the air compressor cluster, the set pressure and the current load of each air compressor; grouping the air compressor cluster according to the working efficiency of each air compressor to obtain a first air compressor group with relatively high efficiency and a second air compressor group with relatively low efficiency; adjusting the set pressure of each air compressor according to the demand load of the air compressor cluster and the current load of each air compressor to control the air production of the air compressor until the air production of the air compressor cluster matches the air consumption; if the demand load of the air compressor cluster is greater than the sum of the current loads of each air compressor, adjusting the set pressure of each air compressor in the first air compressor group; if the demand load of the air compressor cluster is less than the sum of the current loads of each air compressor, adjusting the set pressure of each air compressor in the second air compressor group; if the demand load of the air compressor cluster fluctuates, adjusting the set pressure of each air compressor in the first air compressor group and the second air compressor group simultaneously, and the demand load fluctuation refers to the existence of air compressors with increased current loads and air compressors with reduced current loads in the air compressor cluster.

9. An electronic device, comprising: The method comprises the following steps: a processor and a memory; the memory is used for storing a computer program, and the processor is used for executing the computer program stored in the memory to enable the electronic device to perform the method according to any one of claims 1 to 7.

10. A computer-readable storage medium, characterized in that, A computer program is stored on the memory, and the computer program is used for enabling a computer to perform the method according to any one of claims 1 to 7.

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