Group control method and system for turbine compressor unit

Abstract

The present disclosure provides a group control method and system for a turbine compressor unit. Based on the global efficiency model of the turbine compressor unit and the gas volume parameters of each turbine compressor in the turbine compressor unit, the distributed gas volume allocated to each turbine compressor is determined. The distributed gas volume of each turbine compressor meets the corresponding gas volume parameters. The global efficiency model takes the maximum total efficiency of the turbine compressor unit as the target condition, the distributed gas volume obtained by each turbine compressor as the control variable, and the total distributed gas volume of each turbine compressor equals the total gas volume demand as the constraint condition. In this way, the group control of the turbine compressor unit is realized, ensuring that the overall total efficiency of each turbine compressor in the turbine compressor unit is maximized when it is in a stable operating state. Under the premise of meeting the total gas volume demand, the least energy is consumed, and the accuracy requirements of the group control are met, and the group control automatic management and monitoring of the turbine compressor unit are realized, which greatly reduces the demand for manual participation and human resources.

Description

Technical Field

[0001] The present disclosure relates to the technical field of turbine compressors, and in particular to a group control method and system for a turbine compressor unit, a turbine compressor unit, a control device, and a computer-readable storage medium. Background Art

[0002] A turbo compressor is a dynamic turbo compressor with a high-speed rotating impeller. It relies on the interaction between the rotating impeller and the airflow to increase the gas pressure, while accelerating the airflow to gain kinetic energy. The airflow then decelerates in the diffuser, converting the kinetic energy into pressure energy, further increasing the pressure.

[0003] Turbine compressors are widely used in many key areas in industry, such as petrochemical, coal chemical, natural gas chemical, metallurgy and steel, pharmaceutical and other industries. Among them, turbine compressor load control is crucial to industrial production. It can ensure the safe and stable operation of equipment, reduce energy consumption and operating costs, improve production efficiency, ensure the smooth progress of the production process and the consistency of product quality, thereby promoting efficient, stable and sustainable development of various industries.

[0004] At present, in some industrial scenarios, the control of turbine compressor units still relies on independent operation by operators, and each turbine compressor is monitored and controlled by a dedicated operator. When production demand or process conditions change, operators need to discuss with each other how to adjust the operating parameters of each turbine compressor, such as start and stop, load distribution, etc., and then the operators manually adjust the turbine compressors they are responsible for to achieve mutual coordination of each turbine compressor and ensure the stable operation of the entire system. This mode of operation has many limitations and difficulties. Summary of the invention

[0005] In view of the above-mentioned deficiencies in the related technologies, the purpose of the present disclosure is to provide a group control method and system for a turbine compressor unit, a turbine compressor unit, a control device and a computer-readable storage medium to solve the various problems existing in the related technologies.

[0006] A first aspect of the present disclosure provides a group control method for a turbine compressor unit, comprising:

[0007] Creating a turbo compressor group and setting the gas flow parameters of each turbo compressor in the created turbo compressor group; and

[0008] Based on the global efficiency model of the turbine compressor unit and the air volume parameters of each turbine compressor in the turbine compressor unit, the allocated air volume allocated to each turbine compressor is determined, and the allocated air volume of each turbine compressor meets the corresponding air volume parameters; wherein the global efficiency model takes the maximization of the total efficiency of the turbine compressor unit as a target condition, the allocated air volume obtained by each turbine compressor in the turbine compressor unit as a control variable, and the sum of the allocated air volumes of each turbine compressor in the turbine compressor unit equal to the set total air volume demand as a constraint condition.

[0009] In certain examples of the first aspect, the creation of a turbine compressor unit and setting the gas volume parameters of each turbine compressor in the created turbine compressor unit include: selecting the number and type of turbine compressors required to create the turbine compressor unit, setting the total gas volume requirement of the turbine compressor unit, and determining the design gas volume, minimum gas volume, and maximum gas volume of each turbine compressor; the sum of the design gas volumes of each turbine compressor in the created turbine compressor unit is greater than or equal to the set total gas volume requirement of the turbine compressor unit; wherein the allocated gas volume of each turbine compressor is between the minimum gas volume and the maximum gas volume determined by it.

[0010] In certain examples of the first aspect, the group control method of the turbine compressor unit also includes the step of creating a global efficiency model of the turbine compressor unit, and the step of creating the global efficiency model of the turbine compressor unit includes the following steps: for each turbine compressor, a single-machine efficiency model of each turbine compressor is established, and the single-machine efficiency function in the single-machine efficiency model is related to the design air volume of the turbine compressor, the maximum efficiency under the design air volume, and the total air volume demand of the turbine compressor unit; based on the single-machine efficiency model of each turbine compressor and taking the sum of the allocated air volumes of each turbine compressor in the turbine compressor unit as equal to the set total air volume demand as a constraint condition, the global efficiency model of the turbine compressor unit is constructed.

[0011] In certain examples of the first aspect, based on the single-machine efficiency model of each turbine compressor and taking the sum of the allocated air volumes of each turbine compressor in the turbine compressor unit equal to the set total air volume demand as a constraint condition, a global efficiency model of the turbine compressor unit is constructed, including the following steps: based on the single-machine efficiency model of each turbine compressor, a maximum efficiency model of the turbine compressor unit is constructed; the maximum efficiency function in the maximum efficiency model of the turbine compressor unit is the superposition of the single-machine efficiency functions in the single-machine efficiency models of all turbine compressors; taking the sum of the allocated air volumes of each turbine compressor in the turbine compressor unit equal to the set total air volume demand as a constraint condition, the maximum efficiency model of the turbine compressor unit is converted into a global efficiency model of the turbine compressor unit; in the global efficiency model of the turbine compressor unit, the allocated air volume obtained by each turbine compressor in the turbine compressor unit is used as a control variable.

[0012] In certain examples of the first aspect, based on the global efficiency model of the turbine compressor unit and the gas volume parameters of each turbine compressor in the turbine compressor unit, the allocated gas volume allocated to each turbine compressor is determined, including the following steps: for each turbine compressor, starting from the initial gas volume or the predicted gas volume according to the single-machine efficiency function in its single-machine efficiency model, the gas volume is gradually reduced or increased through iteration; wherein, the sum of the allocated gas volumes in each turbine compressor in the turbine compressor unit is equal to the constraint condition that the total gas volume demand is set.

[0013] In certain examples of the first aspect, the adjustment range of the distributed gas volume in each turbine compressor is limited to between a determined minimum gas volume and a maximum gas volume, or the adjustment range of the distributed gas volume in each turbine compressor is limited to between a determined minimum gas volume and a designed gas volume.

[0014] In certain examples of the first aspect, in the turbine compressor unit, the priority of the turbine compressor is positively correlated with the efficiency improvement degree under the unit gas volume change, and the greater the efficiency improvement of the turbine compressor under the unit gas volume change, the higher the priority of the turbine compressor; when allocating gas volume to each turbine compressor of the turbine compressor unit, the gas volume is preferentially allocated to the turbine compressor with a high priority according to the priority order until the total gas volume is allocated.

[0015] In some examples of the first aspect, the total efficiency of the turbo-compressor group is obtained based on the determined allocated air amounts allocated to the respective turbo-compressors.

[0016] A second aspect of the present disclosure provides a group control system for a turbine compressor unit, comprising:

[0017] A setting module, used for creating a turbine compressor group and setting the gas volume parameters of each turbine compressor in the created turbine compressor group; and

[0018] An air volume distribution module is used to determine the distributed air volume distributed to each turbine compressor based on the global efficiency model of the turbine compressor unit and the air volume parameters of each turbine compressor in the turbine compressor unit, and the distributed air volume of each turbine compressor meets the corresponding air volume parameters; wherein the global efficiency model takes the maximum total efficiency of the turbine compressor unit as the target condition, the distributed air volume obtained by each turbine compressor in the turbine compressor unit as the control variable, and the total distributed air volume of each turbine compressor in the turbine compressor unit equal to the set total air volume demand as a constraint condition.

[0019] In certain examples of the second aspect, creating a turbine compressor group and setting the gas volume parameters of each turbine compressor in the created turbine compressor group through the setting module includes: selecting the number and type of turbine compressors required to create the turbine compressor group, setting the total gas volume requirement of the turbine compressor group, and determining the design gas volume, minimum gas volume, and maximum gas volume of each turbine compressor; the sum of the design gas volumes of each turbine compressor in the created turbine compressor group is greater than or equal to the set total gas volume requirement of the turbine compressor group; wherein the allocated gas volume of each turbine compressor is between the minimum gas volume and the maximum gas volume determined by it.

[0020] In certain examples of the second aspect, the group control system of the turbine compressor unit also includes: a global optimization module, used to create a global efficiency model of the turbine compressor unit; creating the global efficiency model of the turbine compressor unit through the global optimization module is achieved in the following manner: for each turbine compressor, a single-machine efficiency model of each turbine compressor is established, and the single-machine efficiency function in the single-machine efficiency model is related to the design air volume of the turbine compressor, the maximum efficiency under the design air volume, and the total air volume demand of the turbine compressor unit; based on the single-machine efficiency model of each turbine compressor and taking the sum of the allocated air volumes of each turbine compressor in the turbine compressor unit as a constraint condition equal to the set total air volume demand, the global efficiency model of the turbine compressor unit is constructed.

[0021] In certain examples of the second aspect, the group control system of the turbine compressor group further includes a calculation module for obtaining a total efficiency of the turbine compressor group based on the determined allocated air volume allocated to each turbine compressor.

[0022] A third aspect of the present disclosure provides a turbine compressor unit, wherein the turbine compressor unit is created by the group control method of the turbine compressor unit as described above.

[0023] A fourth aspect of the present disclosure provides a control device, comprising: a processor; and a memory storing a computer program, wherein the computer program executes the group control method of the turbine compressor unit as described above when executed by the processor.

[0024] A fifth aspect of the present disclosure provides a computer-readable storage medium storing a computer program, wherein the computer program, when executed, executes the group control method of the turbine compressor unit as described above.

[0025] As described above, the group control method and system of the turbine compressor set, the turbine compressor set, the control device and the computer-readable storage medium provided in the embodiments of the present disclosure are mainly to maximize the total efficiency of the turbine compressor set by optimizing the gas volume distribution. Specifically, based on the global efficiency model of the turbine compressor set and the gas volume parameters of each turbine compressor in the turbine compressor set, the distributed gas volume distributed to each turbine compressor is determined, and the distributed gas volume of each turbine compressor meets the corresponding gas volume parameters. The global efficiency model takes the maximum total efficiency of the turbine compressor set as the target condition, the distributed gas volume obtained by each turbine compressor in the turbine compressor set as the control variable, and the total distributed gas volume of each turbine compressor in the turbine compressor set is equal to the set total gas volume demand as the constraint condition. Through the embodiments of the present disclosure, the group control of the turbine compressor set can be realized, ensuring that the overall total efficiency of each turbine compressor in the turbine compressor set is maximized in a stable operating state, and consuming the least energy under the premise of meeting the total gas volume demand, meeting the precision requirements of the group control of the turbine compressor set, realizing the group control automatic management and monitoring of the turbine compressor set, and greatly reducing the demand for manual participation and human resources. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 Shown is a flow chart of a method for group control of a turbine compressor unit in one embodiment of the present disclosure.

[0027] Figure 2 Shown is a schematic diagram of the structure of a group control system of a turbine compressor unit according to an embodiment of the present disclosure.

[0028] Figure 3 Shown is a schematic diagram of the module structure of a control device in one embodiment of the present disclosure. DETAILED DESCRIPTION

[0029] The following is an explanation of the embodiments of the present disclosure by specific examples, and those skilled in the art can easily understand other advantages and effects of the present disclosure from the information disclosed by the present disclosure. The present disclosure can also be implemented or applied through other different specific embodiments, and the details in the present disclosure can also be modified or changed in various ways according to different viewpoints and application modules without departing from the spirit of the present disclosure. It should be noted that the embodiments in the present disclosure and the features in the embodiments can be combined with each other without conflict.

[0030] The following is a detailed description of the embodiments of the present disclosure with reference to the accompanying drawings so that those skilled in the art can easily implement the present disclosure. The present disclosure can be embodied in many different forms and is not limited to the embodiments described herein.

[0031] In the representations of the present disclosure, the reference terms "one embodiment", "some embodiments", "examples", "specific examples", or "some examples" and the like mean that the specific features, structures, materials or characteristics represented in conjunction with the embodiment or example are included in at least one embodiment or example of the present disclosure. Moreover, the specific features, structures, materials or characteristics represented may be combined in any one or a group of embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine different embodiments or examples represented in the present disclosure and the features of different embodiments or examples, unless they are mutually contradictory.

[0032] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the features. In the representation of the present disclosure, "a group" means two or more, unless otherwise clearly and specifically defined.

[0033] In order to clearly describe the present disclosure, components not related to the description are omitted, and the same reference numerals are given to the same or similar components throughout the specification.

[0034] Throughout the specification, when a device is said to be "connected" to another device, this includes not only the case of "direct connection" but also the case of "indirect connection" by placing other elements therebetween. In addition, when a device is said to "include" a certain component, unless otherwise stated, it does not exclude other components, but means that other components may be included.

[0035] Although the terms first, second, etc. are used to represent various elements in this article in some examples, these elements should not be limited by these terms. These terms are only used to distinguish one element from another element. For example, the first interface and the second interface, etc. are represented. Moreover, as used in this article, the singular forms "one", "one" and "the" are intended to also include plural forms, unless there is an opposite indication in the context. It should be further understood that the terms "comprising" and "including" indicate that there are the described features, steps, operations, elements, modules, projects, kinds, and / or groups, but do not exclude the existence, occurrence or addition of one or a group of other features, steps, operations, elements, modules, projects, kinds, and / or groups. The terms "or" and "and / or" used herein are interpreted as inclusive, or mean any one or any combination. Therefore, "A, B or C" or "A, B and / or C" means "any of the following: A; B; C; A and B; A and C; B and C; A, B and C". Only when the combination of elements, functions, steps or operations is inherently mutually exclusive in some way, will there be an exception to this definition.

[0036] The technical terms used herein are only used to refer to specific embodiments and are not intended to limit the present disclosure. The singular form used herein also includes the plural form unless the sentence clearly indicates the contrary meaning. The meaning of "including" used in the specification is to specify specific characteristics, regions, integers, steps, operations, elements and / or components, and does not exclude the existence or addition of other characteristics, regions, integers, steps, operations, elements and / or components.

[0037] Although not defined differently, all terms, including technical and scientific terms used herein, have the same meaning as those generally understood by those skilled in the art to which the present disclosure belongs. Terms defined in commonly used dictionaries are additionally interpreted as having meanings consistent with relevant technical literature and the message of the present disclosure, and shall not be overly interpreted as ideal or very formal meanings unless defined.

[0038] The control of traditional turbine compressor units still relies on the independent operation of operators. Each turbine compressor is monitored and controlled by a dedicated operator. There are still problems such as poor coordination among the turbine compressors, cumbersome group control, difficulty in coordinating the total efficiency of the turbine compressor unit and the stable operation of each turbine compressor (for example, the total efficiency cannot be maximized or the operating state of the turbine compressor exceeds the working range when the total efficiency is maximized), poor turbine compressor deployment accuracy, high technical requirements for operators and high labor costs.

[0039] In view of this, the embodiments of the present disclosure provide a group control method and system for a turbine compressor unit, a turbine compressor unit, a control device and a computer-readable storage medium to solve the problems in the related art.

[0040] The first aspect of the present disclosure provides a group control method for a turbine compressor group, comprising: creating a turbine compressor group and setting the gas volume parameters of each turbine compressor in the created turbine compressor group; determining the allocated gas volume allocated to each turbine compressor based on the global efficiency model of the turbine compressor group and the gas volume parameters of each turbine compressor in the turbine compressor group, wherein the allocated gas volume of each turbine compressor meets the corresponding gas volume parameter. The group control of the turbine compressor group is realized to ensure that the overall total efficiency of each turbine compressor in the turbine compressor group is maximized when it is in a stable operating state.

[0041] See also Figure 1 , which is a flow chart of a group control method of a turbine compressor unit in one embodiment of the present disclosure.

[0042] like Figure 1 As shown, the group control method of the turbine compressor unit includes the following steps:

[0043] Step S11, creating a turbine compressor group and setting the gas volume parameters of each turbine compressor in the created turbine compressor group.

[0044] In certain embodiments, the creation of a turbine compressor unit and setting the gas volume parameters of each turbine compressor in the created turbine compressor unit may more specifically include: selecting the number and type of turbine compressors required to create the turbine compressor unit, setting the total gas volume requirement of the turbine compressor unit, and determining the design gas volume, minimum gas volume, and maximum gas volume of each turbine compressor.

[0045] When creating a turbo compressor unit, the number and type of turbo compressors are selected. The number and type of the turbo compressors can be flexibly set according to actual working conditions. In some embodiments, when creating a turbo compressor unit, a certain number of turbo compressors of the same type can be selected. In some embodiments, when creating a turbo compressor unit, a certain number of turbo compressors of different types can be selected.

[0046] The total gas volume requirement of the turbine compressor unit is set, and the design gas volume, minimum gas volume, and maximum gas volume of each turbine compressor are determined.

[0047] In some embodiments, the total gas volume demand of the turbine compressor group may be identified as Q_total or Q, and the design gas volume of the turbine compressor may be identified as Q opt 、The minimum gas volume is marked as Q L , the maximum gas volume is marked as Q H, where the design gas volume of the turbine compressor is Q opt That is, the optimal gas volume when the turbine compressor can achieve maximum efficiency.

[0048] For each turbine compressor in the created turbine compressor unit, the corresponding design gas volume Q is set opt , minimum gas volume Q L , and the maximum gas volume Q H For example, when the created turbo compressor unit includes n turbo compressors, the corresponding design gas volume Q is set for each of the n turbo compressors. opt , minimum gas volume Q L , and the maximum gas volume Q H , so, set the design gas volume Q of the first turbo compressor opt1 , minimum gas volume Q L1 , and the maximum gas volume Q H1 , set the design gas volume Q of the second turbine compressor opt2 , minimum gas volume Q L2 , and the maximum gas volume Q H2 , set the design gas volume Q of the second turbine compressor opt3 , minimum gas volume Q L3 , and the maximum gas volume Q H3 , ..., set the design gas volume Q of the n-1th turbine compressor optn-1 , minimum gas volume Q Ln-1 , and the maximum gas volume Q Hn-1 , set the design gas volume Q of the second turbine compressor optn , minimum gas volume Q Ln , and the maximum gas volume Q Hn .

[0049] Among them, when setting the total gas volume demand of the turbine compressor group and determining the design gas volume, minimum gas volume, and maximum gas volume of each turbine compressor, the sum of the design gas volumes of each turbine compressor in the created turbine compressor group must be greater than or equal to the set total gas volume demand of the turbine compressor group.

[0050] By setting the minimum gas volume Q of the turbo compressor L and maximum gas volume Q H , which can limit the gas volume range for the turbine compressor to achieve normal operation. The design gas volume Q of the turbine compressor opt Can be located at the minimum gas volume Q L and maximum gas volume Q H In practical applications, the design gas volume Q of the turbo compressor can be determined based on the type of turbo compressor. opt , then set the minimum gas volume Q of the turbine compressor Land maximum gas volume Q H Subsequently, when determining the distributed gas volume of the turbine compressor, the adjustment range of the distributed gas volume of the turbine compressor is limited to the minimum gas volume Q L and maximum gas volume Q H between.

[0051] Step S13, creating a global efficiency model of the turbine compressor unit.

[0052] In some embodiments, the step of creating a global efficiency model of the turbine compressor unit may further include the following steps:

[0053] Step S131: for each turbine compressor, establish a single-machine efficiency model for each turbine compressor, wherein the single-machine efficiency function in the single-machine efficiency model is related to the design gas volume of the turbine compressor, the maximum efficiency under the design gas volume, and the total gas volume demand of the turbine compressor group.

[0054] Specifically, for each turbine compressor, a single-machine efficiency model is established. The single-machine efficiency function in the single-machine efficiency model is shown in the following formula (1):

[0055] (1)

[0056] in:

[0057] is the efficiency of a single turbo compressor;

[0058] Optimal gas flow for a single turbo compressor Maximum efficiency when

[0059] is the current total gas volume of the turbine compressor unit;

[0060] The design gas volume of a single turbine compressor, i.e., the optimal gas volume for a single turbine compressor to achieve maximum efficiency;

[0061] is a coefficient, which determines the width and shape of the single machine efficiency curve.

[0062] From formula (1), we can see that the single-machine efficiency function in the single-machine efficiency model is a parabolic function. This corresponds to the vertex of the single-machine efficiency function. At this point, the single-machine efficiency of a single turbine compressor reaches its maximum value. .

[0063] Step S133, constructing a global efficiency model of the turbine compressor group based on the single-machine efficiency model of each turbine compressor and taking the total design gas volume of each turbine compressor in the turbine compressor group as a constraint condition that is greater than or equal to the set total gas volume demand.

[0064] In step S133, based on the single-machine efficiency model of each turbine compressor, a maximum efficiency model of the turbine compressor group is constructed, wherein the maximum efficiency function in the maximum efficiency model of the turbine compressor group is the superposition of the single-machine efficiency functions in the single-machine efficiency models of all turbine compressors.

[0065] Specifically, the maximum efficiency function in the maximum efficiency model of the turbine compressor unit is shown in the following formula (2):

[0066] (2)

[0067] in:

[0068] is the total efficiency of the turbo compressor unit;

[0069] is the allocated gas volume obtained by the i-th turbo compressor;

[0070] is the design gas volume of the i-th turbo compressor, that is, the optimal gas volume for the i-th turbo compressor to achieve maximum efficiency.

[0071] Taking the sum of the allocated gas volumes of each turbine compressor in the turbine compressor unit equal to the set total gas volume demand as a constraint condition, the maximum efficiency model of the turbine compressor unit is converted into a global efficiency model of the turbine compressor unit.

[0072] Specifically, in the turbine compressor unit, the constraint condition is that the sum of the allocated gas volumes of each turbine compressor in the turbine compressor unit is equal to the set total gas volume demand:

[0073] (3)

[0074] In order to maximize the total efficiency while satisfying the total gas volume constraint, the Lagrangian function can be constructed:

[0075] (4)

[0076] Derivate and solve the above formula (4) for each Find the extreme points by taking the partial derivative and setting it equal to zero:

[0077] (5)

[0078] The above formula (5) can be simplified as:

[0079] (6)

[0080] The above formula (6) can be rearranged as:

[0081] (7)

[0082] According to the constraint condition in formula (3) that the sum of the allocated gas volume of each turbine compressor is equal to the total gas volume demand, the global efficiency model of the turbine compressor unit is obtained by solving formula (7):

[0083] (8)

[0084] As mentioned above, the efficiency function of a single turbine compressor is a parabolic function. This corresponds to the vertex of the single-machine efficiency function. At this point, the single-machine efficiency of a single turbine compressor reaches its maximum value. In actual production, in order to ensure the safety of operators and equipment, it is usually ensured that each turbine compressor operates at a rate not exceeding its designed gas volume. Under the working condition, this can also simplify the process of solving the distributed gas volume of each turbine compressor.

[0085] Design gas volume It corresponds to the vertex of the single-machine efficiency function, where the single-machine efficiency reaches its maximum value. ,but, The corresponding single-machine efficiency increases with the increase of gas volume, so within this range, the efficiency function is monotonically increasing. Therefore, when determining the distributed gas volume of a single turbine compressor, the adjustment range of the distributed gas volume of the turbine compressor is limited to the minimum gas volume Q L and design gas volume between.

[0086] The group control method of the turbine compressor unit is actually to maximize the allocated gas volume to each turbine compressor when allocating the limited total gas demand Q, while ensuring that the allocated gas volume is within the design gas volume. Left side (if the air volume allocated to the turbine compressor is within the design air volume On the right side, more gas will be consumed from the total gas volume Q), so the gas volume allocation problem in the group control method can be simplified to a monotonically increasing optimization problem, which can more easily solve the optimal gas volume allocation to maximize the total efficiency. That is, the adjustment range of the allocated gas volume in each turbine compressor in the turbine compressor unit is limited to the minimum gas volume Q. L and design gas volume between.

[0087] In some embodiments, if the sum of the designed gas volumes of all the turbo compressors in the turbo compressor unit is equal to the total gas volume demand Q, that is,

[0088] This means that the set total gas volume demand Q can meet the design gas volume of all the turbine compressors in the turbine compressor unit. At this time, all the turbine compressors can reach their respective maximum efficiency, and the total efficiency of the turbine compressor unit is the sum of the maximum efficiencies of all the turbine compressors.

[0089] In some embodiments, if the sum of the designed gas volumes of all the turbo compressors in the turbo compressor unit is greater than the total gas volume demand Q, that is,

[0090] This means that the set total gas demand Q is not sufficient to meet the design gas volume of all the turbine compressors in the turbine compressor unit. At this time, when determining the allocated gas volume allocated to each turbine compressor, for each turbine compressor, starting from the initial gas volume or the predicted gas volume, the gas volume is gradually reduced or increased through iteration according to the single-machine efficiency function in its single-machine efficiency model.

[0091] For example, when determining the allocated gas volume to be allocated to each turbine compressor, the allocated gas volume of some turbine compressors may be allocated to the corresponding minimum gas volume Q L Nearby, through iteration, gradually increase the gas volume.

[0092] For example, when determining the allocated gas volume allocated to each turbine compressor, the allocated gas volume of some turbine compressors can be allocated to their corresponding design gas volume. Nearby, through iteration, gradually reduce the gas volume.

[0093] In addition, in some embodiments, the marginal benefits of each turbine compressor in the turbine compressor unit are different, wherein the marginal benefit of the single-unit efficiency in the turbine compressor is the efficiency improvement under the unit gas volume change, specifically refers to the efficiency improvement brought about by each additional unit gas volume, that is, the higher the efficiency improvement brought about by the increase of one unit gas volume, the higher the marginal benefit of its single-unit efficiency. Therefore, the priority of each turbine compressor can be determined according to the marginal benefit of each turbine compressor, and the higher the marginal benefit of the turbine compressor, the higher the priority of the turbine compressor. In general, when determining the allocated gas volume allocated to each turbine compressor, the priority can be determined by sorting according to the marginal benefit of the single-unit efficiency in each turbine compressor, and the gas volume is preferentially allocated to the turbine compressor with a high priority (i.e., a high marginal benefit) according to the priority order, until the total gas volume is allocated, thereby maximizing the total efficiency of the turbine compressor unit.

[0094] For example, when determining the allocated gas volume of each turbine compressor in the turbine compressor group, the turbine compressors are sorted according to the marginal benefits of their single-unit efficiency, and the allocated gas volume of turbine compressors with high marginal benefits of single-unit efficiency is preferentially allocated to their corresponding design gas volume. Or design gas volume The gas volume of the turbine compressors with low marginal benefits of single-unit efficiency is allocated to a volume lower than the corresponding design gas volume Q opt The smaller the gas volume, the smaller the corresponding minimum gas volume Q. L Nearby, until the total gas demand Q is fully allocated, thereby maximizing the marginal benefit of the entire turbine compressor unit, that is, maximizing the overall efficiency of the turbine compressor unit.

[0095] In addition, as mentioned above, by setting the minimum gas volume Q of the turbo compressor L and maximum gas volume Q H , which can limit the gas volume range for the turbine compressor to achieve normal operation. To prevent the turbine compressor from obtaining a distributed gas volume exceeding the minimum gas volume Q L and maximum gas volume Q H In some embodiments, when each turbine compressor obtains the allocated gas volume according to step S13, the allocated gas volume of each turbine compressor is also verified to ensure that the allocated gas volume of each turbine compressor is within the set minimum gas volume Q L and maximum gas volume Q H For example, when it is verified that the distributed gas volume obtained by a certain turbine compressor is within the set minimum gas volume Q L When the air volume of the turbine compressor is below the minimum air volume Q, L When the gas volume obtained by a certain turbine compressor is within the maximum gas volume Q set H When the gas volume of the turbine compressor is adjusted to the maximum gas volume Q H And the amount of gas below it.

[0096] Step S15, obtaining the total efficiency of the turbine compressor group based on the determined distributed air volume distributed to each turbine compressor.

[0097] In step S15, under the constraint that the sum of the allocated air volumes of each turbine compressor in the turbine compressor unit is equal to the set total air volume demand, based on the global efficiency model of the turbine compressor unit and the air volume parameters of each turbine compressor in the turbine compressor unit, the allocated air volume of each turbine compressor is adjusted and optimized, and finally the allocated air volume allocated to each turbine compressor is determined, thereby obtaining the total efficiency of the turbine compressor unit.

[0098] The group control method of the turbine compressor set provided in the embodiment of the present disclosure is mainly to maximize the total efficiency of the turbine compressor set by optimizing the gas volume distribution. Specifically, based on the global efficiency model of the turbine compressor set and the gas volume parameters of each turbine compressor in the turbine compressor set, the distributed gas volume distributed to each turbine compressor is determined, and the distributed gas volume of each turbine compressor meets the corresponding gas volume parameters. The global efficiency model takes the maximum total efficiency of the turbine compressor set as the target condition, the distributed gas volume obtained by each turbine compressor in the turbine compressor set as the control variable, and the total distributed gas volume of each turbine compressor in the turbine compressor set equals the set total gas volume demand as the constraint condition. Through the embodiment of the present disclosure, the group control of the turbine compressor set can be realized, ensuring that the overall total efficiency of each turbine compressor in the turbine compressor set is maximized when it is in a stable operating state, and consuming the least energy under the premise of meeting the total gas volume demand, meeting the precision requirements of the group control of the turbine compressor set, realizing the group control automatic management and monitoring of the turbine compressor set, and greatly reducing the demand for manual participation and human resources.

[0099] The second aspect of the present disclosure provides a group control system for a turbine compressor set, comprising: a setting module for creating a turbine compressor set and setting the gas volume parameters of each turbine compressor in the created turbine compressor set; a gas volume distribution module for determining the distributed gas volume distributed to each turbine compressor based on the global efficiency model of the turbine compressor set and the gas volume parameters of each turbine compressor in the turbine compressor set, wherein the distributed gas volume of each turbine compressor meets the corresponding gas volume parameters. The group control of the turbine compressor set is realized to ensure that the overall total efficiency of each turbine compressor in the turbine compressor set is maximized when it is in a stable operating state.

[0100] See also Figure 2 , which is a schematic diagram of the structure of a group control system of a turbine compressor unit according to an embodiment of the present disclosure.

[0101] like Figure 2 As shown, the group control system of the turbine compressor unit of the present invention includes: a setting module 21, a global optimization module 23, a gas volume distribution module 25, and a calculation module 27.

[0102] The setting module 21 is used to create a turbine compressor unit and set the gas volume parameters of each turbine compressor in the created turbine compressor unit.

[0103] When creating a turbo compressor unit, the number and type of turbo compressors are selected. The number and type of the turbo compressors can be flexibly set according to actual working conditions. In some embodiments, when creating a turbo compressor unit, a certain number of turbo compressors of the same type can be selected. In some embodiments, when creating a turbo compressor unit, a certain number of turbo compressors of different types can be selected.

[0104] The total gas volume requirement of the turbine compressor unit is set, and the design gas volume, minimum gas volume, and maximum gas volume of each turbine compressor are determined.

[0105] Among them, when setting the total gas volume demand of the turbine compressor group and determining the design gas volume, minimum gas volume, and maximum gas volume of each turbine compressor, the sum of the design gas volumes of each turbine compressor in the created turbine compressor group must be greater than or equal to the set total gas volume demand of the turbine compressor group.

[0106] By setting the minimum gas volume and the maximum gas volume of the turbine compressor, the gas volume range for the turbine compressor to achieve normal operation can be limited, and the design gas volume of the turbine compressor can be between the minimum gas volume and the maximum gas volume. Subsequently, when determining the allocated gas volume of each turbine compressor, the adjustment range of the allocated gas volume of each turbine compressor is limited to between the minimum gas volume and the maximum gas volume determined by the turbine compressor.

[0107] Each global optimization module 23 is used to create a global efficiency model of the turbo-compressor group.

[0108] In certain embodiments, creating a global efficiency model of the turbine compressor unit through a global optimization module is achieved in the following manner: for each turbine compressor, a stand-alone efficiency model of each turbine compressor is established, and the stand-alone efficiency function in the stand-alone efficiency model is related to the design air volume of the turbine compressor, the maximum efficiency under the design air volume, and the total air volume demand of the turbine compressor unit; based on the stand-alone efficiency model of each turbine compressor and taking the sum of the allocated air volumes of each turbine compressor in the turbine compressor unit as a constraint condition equal to the set total air volume demand, a global efficiency model of the turbine compressor unit is constructed.

[0109] The air volume allocation module 25 is used to determine the allocated air volume allocated to each turbine compressor based on the global efficiency model of the turbine compressor unit and the air volume parameters of each turbine compressor in the turbine compressor unit, and the allocated air volume of each turbine compressor meets the corresponding air volume parameters; wherein the global efficiency model takes the maximum total efficiency of the turbine compressor unit as the target condition, the allocated air volume obtained by each turbine compressor in the turbine compressor unit as the control variable, and the constraint condition that the sum of the allocated air volumes of each turbine compressor in the turbine compressor unit is equal to the set total air volume demand.

[0110] The calculation module 27 is used to obtain the total efficiency of the turbine compressor group based on the determined distributed air volume distributed to each turbine compressor.

[0111] It should be noted that the group control system of the turbine compressor set provided in the above embodiment and the group control method of the turbine compressor set provided in the above embodiment belong to the same concept, wherein the specific manner in which each module and unit performs the operation has been described in detail in the method embodiment, and will not be repeated here. In actual application, the group control system of the turbine compressor set provided in the above embodiment can allocate the above functions to different functional modules as needed, that is, divide the internal structure of the system into different functional modules to complete all or part of the functions described above, and this is not limited here.

[0112] A third aspect of the present disclosure provides a turbine compressor unit, wherein the turbine compressor unit is created by the group control method of the turbine compressor unit as described above.

[0113] A fourth aspect of the present disclosure provides a control device.

[0114] See also Figure 3 , which is a schematic diagram of the module structure of a control device in one embodiment of the present disclosure.

[0115] The control device 3 includes a processor 31 and a memory 33. The processor 31 and the memory 33 can communicate with each other through a bus 32. The memory 33 may store a computer program. The processor 31 implements the computer program by running the computer program in the memory 33. Figure 1 The various steps in the group control method of the turbine compressor unit shown in the embodiment.

[0116] The bus 32 may be a Peripheral Component Interconnect (PCI) bus or an Extended Industry Standard Architecture (EISA) bus, etc. The bus 32 may be divided into an address bus, a data bus, a control bus, etc. For ease of representation, although only one thick line is used in the figure, it does not mean that there is only one bus or one type of bus.

[0117] In some embodiments, the processor 31 may be implemented as a central processing unit (CPU), a microprocessing unit (MCU), a system on chip (SoC), or a field programmable gate array (FPGA). The memory 33 may include a volatile memory for temporary storage of data when running a program, such as a random access memory (RAM). The memory 33 may also include a non-volatile memory for data storage, such as a read-only memory (ROM), a flash memory, a hard disk drive (HDD), or a solid-state disk (SSD).

[0118] In some embodiments, the control device 3 may further include a display 35. The display 35 is used to display various types of information, for example, displaying a setting page for creating a turbine compressor unit and setting gas volume parameters of each turbine compressor in the created turbine compressor unit, displaying the determined allocated gas volume of each turbine compressor in the turbine compressor unit, and displaying the total efficiency of the turbine compressor unit calculated based on the determined allocated gas volume of each turbine compressor, etc. In a specific example, the display 35 may include, for example, one of an LED display screen, an LCD display screen, a digital tube display screen, or a plasma display screen.

[0119] Based on the above embodiments, the fifth aspect of the embodiments of the present disclosure further provides a computer-readable storage medium, on which at least one computer program is stored. When the computer program is executed by a processor, the group control method of the turbine compressor unit in the above embodiments is implemented.

[0120] A person of ordinary skill in the art can understand that all or part of the steps in the method for implementing the above embodiment can be completed by instructing the processor through a program, and the program can be stored in a computer-readable storage medium, and the storage medium is a non-transitory medium, such as a random access memory, a read-only memory, a flash memory, a hard disk, a solid-state hard disk, a magnetic tape, a floppy disk, an optical disc, and any combination thereof. The above storage medium can be any available medium that can be accessed by a computer or a data storage device such as a server or a data center that includes one or more available media. The available medium can be a magnetic medium, an optical medium, or a semiconductor medium, wherein the magnetic medium can be, for example, a floppy disk, a hard disk, or a tape, etc., the optical medium can be, for example, a digital video disc (DVD), etc., and the semiconductor medium can be, for example, a solid-state hard disk (SSD), etc.

[0121] The descriptions of the processes or structures corresponding to the above-mentioned figures have different emphases. For parts that are not described in detail in a certain process or structure, please refer to the relevant descriptions of other processes or structures.

[0122] The group control method and system of the turbine compressor set, the turbine compressor set, the control device and the computer-readable storage medium provided in the embodiments of the present disclosure are mainly to maximize the total efficiency of the turbine compressor set by optimizing the gas volume distribution. Specifically, based on the global efficiency model of the turbine compressor set and the gas volume parameters of each turbine compressor in the turbine compressor set, the distributed gas volume distributed to each turbine compressor is determined, and the distributed gas volume of each turbine compressor meets the corresponding gas volume parameters. The global efficiency model takes the maximum total efficiency of the turbine compressor set as the target condition, the distributed gas volume obtained by each turbine compressor in the turbine compressor set as the control variable, and the total distributed gas volume of each turbine compressor in the turbine compressor set equals the set total gas volume demand as the constraint condition. Through the embodiments of the present disclosure, the group control of the turbine compressor set can be realized, ensuring that the overall total efficiency of each turbine compressor in the turbine compressor set is maximized in a stable operating state, and consuming the least energy under the premise of meeting the total gas volume demand, meeting the precision requirements of the group control of the turbine compressor set, realizing the automatic management and monitoring of the group control of the turbine compressor set, and greatly reducing the demand for manual participation and human resources.

[0123] Compared with the related art, the group control method and system of the turbine compressor unit, the turbine compressor unit, the control device and the computer-readable storage medium provided in the embodiments of the present disclosure have at least the following advantages:

[0124] Improved energy efficiency: The operating status of each turbine compressor can be dynamically adjusted according to real-time demand and the efficiency curve of each turbine compressor to avoid unnecessary energy consumption, thereby maximizing overall energy efficiency. In addition, by intelligently allocating the load of each turbine compressor, a single turbine compressor can be prevented from operating at high load for a long time, thus extending equipment life and reducing maintenance costs.

[0125] Operation stability and reliability: It can detect and respond to abnormal situations, quickly adjust the operating status of the turbine compressor, and ensure the stability and reliability of the turbine compressor unit.

[0126] Redundant configuration: In the turbine compressor unit, redundant configuration can be realized. When a turbine compressor fails, other turbine compressors are automatically mobilized to supplement and avoid production interruption.

[0127] Centralized management: Multiple turbo compressors can be centrally monitored and managed, simplifying the operator's work and improving management efficiency.

[0128] Preventive maintenance: Based on the operating data and historical records of each turbine compressor, possible failure points can be predicted, maintenance can be arranged in advance, and the risk of unexpected downtime can be reduced.

[0129] Flexibility and scalability: The combination and configuration of turbine compressors can be flexibly adjusted according to changes in production needs to adapt to different production scenarios and changes in demand; and when the production scale expands, the group control system can easily add new turbine compressors to continue to optimize the overall operating efficiency.

[0130] The above description of the disclosed embodiments enables one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to one skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but rather to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A group control method for a turbine compressor unit, characterized in that: The steps include: Creating a turbine compressor unit and setting the gas volume parameters of each turbine compressor in the created turbine compressor unit, including: selecting the number and type of turbine compressors required for creating the turbine compressor unit, setting the total gas volume requirement of the turbine compressor unit, and determining the design gas volume, minimum gas volume, and maximum gas volume of each turbine compressor; the sum of the design gas volumes of each turbine compressor in the created turbine compressor unit is greater than or equal to the set total gas volume requirement of the turbine compressor unit; the allocated gas volume of each turbine compressor is between the minimum gas volume and the maximum gas volume determined by it; Based on the global efficiency model of the turbine compressor unit and the gas volume parameters of each turbine compressor in the turbine compressor unit, the allocated gas volume allocated to each turbine compressor is determined, and the allocated gas volume of each turbine compressor meets the corresponding gas volume parameters; the global efficiency model takes the maximum total efficiency of the turbine compressor unit as the target condition, the allocated gas volume obtained by each turbine compressor in the turbine compressor unit as the control variable and the total allocated gas volume equal to the set total gas volume demand as the constraint condition; The global efficiency model of the turbine compressor unit is realized by the following steps: for each turbine compressor, a stand-alone efficiency model of each turbine compressor is established, and the stand-alone efficiency function in the stand-alone efficiency model is related to the design gas volume of the turbine compressor, the maximum efficiency under the design gas volume, and the total gas volume demand of the turbine compressor unit; based on the stand-alone efficiency model of each turbine compressor and taking the sum of the allocated gas volume of each turbine compressor in the turbine compressor unit equal to the set total gas volume demand as a constraint condition, a global efficiency model of the turbine compressor unit is constructed, including: based on the stand-alone efficiency model of each turbine compressor, a maximum efficiency model of the turbine compressor unit is constructed; the maximum efficiency function in the maximum efficiency model of the turbine compressor unit is the superposition of the stand-alone efficiency functions in the stand-alone efficiency models of all turbine compressors; taking the sum of the allocated gas volume of each turbine compressor in the turbine compressor unit equal to the set total gas volume demand as a constraint condition, the maximum efficiency model of the turbine compressor unit is converted into the global efficiency model of the turbine compressor unit; in the global efficiency model of the turbine compressor unit, the allocated gas volume obtained by each turbine compressor in the turbine compressor unit is used as a control variable.

2. The group control method of a turbine compressor unit according to claim 1, characterized in that: Determining the allocated gas volume allocated to each turbine compressor based on the global efficiency model of the turbine compressor unit and the gas volume parameters of each turbine compressor in the turbine compressor unit comprises the following steps: For each turbine compressor, according to the unit efficiency function in its unit efficiency model, starting from the initial gas volume or predicted gas volume, the gas volume is gradually reduced or increased through iteration; Wherein, the total amount of distributed gas in each turbine compressor in the turbine compressor unit is equal to the constraint condition of the set total gas demand.

3. The group control method of a turbine compressor unit according to claim 2, characterized in that: The adjustment range of the distributed gas volume in each turbine compressor is limited to between the determined minimum gas volume and the maximum gas volume, or the adjustment range of the distributed gas volume in each turbine compressor is limited to between the determined minimum gas volume and the designed gas volume.

4. The group control method of a turbine compressor unit according to claim 2, characterized in that: In the turbine compressor unit, the priority of the turbine compressor is positively correlated with the degree of improvement in efficiency per unit change in gas volume. The greater the efficiency improvement of the turbine compressor per unit change in gas volume, the higher the priority of the turbine compressor. When allocating gas volume to each turbine compressor of the turbine compressor unit, the gas volume is allocated to the turbine compressor with a high priority in order of priority until the total gas volume is allocated.

5. The group control method of a turbine compressor unit according to claim 1, characterized in that: Also includes: Based on the determined distributed air volume distributed to each turbo compressor, the overall efficiency of the turbo compressor group is obtained.

6. A group control system for a turbine compressor unit, characterized in that: include: A setting module is used to create a turbine compressor unit and set the gas volume parameters of each turbine compressor in the created turbine compressor unit, including: selecting the number and type of turbine compressors required for creating the turbine compressor unit, setting the total gas volume requirement of the turbine compressor unit, and determining the design gas volume, minimum gas volume, and maximum gas volume of each turbine compressor; the sum of the design gas volumes of each turbine compressor in the created turbine compressor unit is greater than or equal to the set total gas volume requirement of the turbine compressor unit, and the allocated gas volume of each turbine compressor is between the minimum gas volume and the maximum gas volume determined by it; A global optimization module, used for creating a global efficiency model of the turbine compressor unit, including: for each turbine compressor, establishing a single-machine efficiency model of each turbine compressor, wherein the single-machine efficiency function in the single-machine efficiency model is related to the design gas volume of the turbine compressor, the maximum efficiency under the design gas volume, and the total gas volume demand of the turbine compressor unit; based on the single-machine efficiency model of each turbine compressor and taking the sum of the allocated gas volumes of each turbine compressor in the turbine compressor unit equal to the set total gas volume demand as a constraint condition, constructing the global efficiency model of the turbine compressor unit; An air volume distribution module is used to determine the distributed air volume distributed to each turbine compressor based on the global efficiency model of the turbine compressor unit and the air volume parameters of each turbine compressor in the turbine compressor unit, and the distributed air volume of each turbine compressor meets the corresponding air volume parameters; wherein the global efficiency model takes the maximum total efficiency of the turbine compressor unit as the target condition, the distributed air volume obtained by each turbine compressor in the turbine compressor unit as the control variable, and the total distributed air volume of each turbine compressor in the turbine compressor unit equal to the set total air volume demand as a constraint condition.

7. The group control system of the turbine compressor unit according to claim 6, characterized in that: The invention also comprises a calculation module for obtaining the total efficiency of the turbine compressor group based on the determined distributed air volume distributed to each turbine compressor.

8. A turbine compressor unit, characterized in that: The turbo-compressor unit is created by the group control method of a turbo-compressor unit according to any one of claims 1 to 5.

9. A control device, characterized in that: include: processor; a memory storing a computer program; Wherein, when the computer program is executed by the processor, the group control method of the turbine compressor unit according to any one of claims 1 to 5 is executed.

10. A computer-readable storage medium, characterized in that: A computer program is stored, and when the computer program is executed, the group control method of the turbo-compressor unit according to any one of claims 1 to 5 is executed.

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