Parallel operation fan leveling method and device

Abstract

The present invention provides a method and device for leveling parallel-running fans. The method for leveling parallel-running fans includes: determining the relative deviation of each robbing operation parameter according to the robbing operation parameter of the first fan and the robbing operation parameter of the second fan; determining the balance coefficient of each operation parameter according to the relative deviation of each robbing operation parameter; determining the fan output deviation value according to the balance coefficient of each operation parameter, the real-time operation parameter of the first fan and the real-time operation parameter of the second fan; and adjusting the moving blades of the first fan and the moving blades of the second fan according to the comparison result between the fan output deviation value and the preset deviation threshold. The present invention can effectively level parallel-running fans with multiple operation parameters.

Description

Technical Field

[0001] The present invention relates to the technical field of fan adjustment, and specifically, to a method and device for leveling parallel-operating fans. Background Art

[0002] Currently in coal-fired power plants, generally two fans such as forced draft fans, primary air fans, and induced draft fans are set to operate in parallel as Fan A and Fan B; however, during the parallel operation of fans, in order to avoid the phenomenon of air snatching caused by different outputs of the two sides of the fans, generally the outputs of the two sides of the fans are adjusted to be the same (hereinafter referred to as "fan leveling"). In an ideal situation, after the two sides of the fans are leveled, the operating parameters such as the flow rate, current, moving vane opening, and total pressure rise of the two sides of the fans should also be exactly the same. However, because the characteristics of the two fans cannot be exactly the same, and the resistance characteristics of the air ducts on both sides cannot be exactly the same, so in fact, there cannot be a situation where the operating parameters are exactly the same. Most power plant operators level the fans according to one of the fan current, the air volume on both sides, the moving vane opening, or the total pressure rise of the fan, and leveling based on only one parameter is not a reasonable fan leveling method. Summary of the Invention

[0003] The main purpose of the embodiments of the present invention is to provide a method and device for leveling parallel-operating fans to effectively level parallel-operating fans with multiple operating parameters.

[0004] To achieve the above purpose, the embodiments of the present invention provide a method for leveling parallel-operating fans, including:

[0005] Determining the relative deviation of each air-snatching operating parameter according to the air-snatching operating parameter of the first fan and the air-snatching operating parameter of the second fan;

[0006] Determining the balance coefficient of each operating parameter according to the relative deviation of each air-snatching operating parameter;

[0007] Determining the fan output deviation value according to the balance coefficient of each operating parameter, the real-time operating parameter of the first fan, and the real-time operating parameter of the second fan;

[0008] Adjusting the moving vane of the first fan and the moving vane of the second fan according to the comparison result between the fan output deviation value and the preset deviation threshold.

[0009] In one of the embodiments, determining the fan output deviation value according to the balance coefficient of each operating parameter, the real-time operating parameter of the first fan, and the real-time operating parameter of the second fan includes:

[0010] Obtaining the output degree of the first fan and the output degree of the second fan according to the balance coefficient of each operating parameter, the real-time operating parameter of the first fan, and the real-time operating parameter of the second fan;

[0011] Determine the fan output deviation value based on the output of the first fan and the output of the second fan.

[0012] In one embodiment, obtaining the output of the first fan and the output of the second fan based on the balance coefficient of each operating parameter, the real-time operating parameters of the first fan, and the real-time operating parameters of the second fan includes:

[0013] Create a first fan output model and a second fan output model;

[0014] Input the balance coefficient of each operating parameter, the real-time operating parameters of the first fan, and the real-time operating parameters of the second fan into the first fan output model to obtain the output of the first fan;

[0015] Input the balance coefficient of each operating parameter, the real-time operating parameters of the first fan, and the real-time operating parameters of the second fan into the second fan output model to obtain the output of the second fan.

[0016] In one embodiment, determining the balance coefficient of each operating parameter according to the relative deviation of each robbing air operation parameter includes:

[0017] Sort the robbing air operation parameters according to the relative deviation of each robbing air operation parameter to obtain the sorting data of each robbing air operation parameter;

[0018] Determine the balance coefficient of each operating parameter according to the sorting data of each robbing air operation parameter.

[0019] An embodiment of the present invention further provides a parallel operation fan leveling device, including:

[0020] A relative deviation module, configured to determine the relative deviation of each robbing air operation parameter according to the robbing air operation parameters of the first fan and the robbing air operation parameters of the second fan;

[0021] A balance coefficient module, configured to determine the balance coefficient of each operating parameter according to the relative deviation of each robbing air operation parameter;

[0022] An output deviation value module, configured to determine the fan output deviation value according to the balance coefficient of each operating parameter, the real-time operating parameters of the first fan, and the real-time operating parameters of the second fan;

[0023] A fan adjustment module, configured to adjust the moving blades of the first fan and the moving blades of the second fan according to the comparison result between the fan output deviation value and a preset deviation threshold.

[0024] In one embodiment, the output deviation value module includes:

[0025] The fan output force unit is used to obtain the output force of the first fan and the output force of the second fan according to the balance coefficient of each operating parameter, the real-time operating parameters of the first fan, and the real-time operating parameters of the second fan;

[0026] The output deviation value unit is used to determine the fan output deviation value according to the output force of the first fan and the output force of the second fan.

[0027] In one embodiment, the fan output force unit includes:

[0028] The model creation subunit is used to create the output force model of the first fan and the output force model of the second fan;

[0029] The first fan output force subunit is used to input the balance coefficient of each operating parameter, the real-time operating parameters of the first fan, and the real-time operating parameters of the second fan into the output force model of the first fan to obtain the output force of the first fan;

[0030] The second fan output force subunit is used to input the balance coefficient of each operating parameter, the real-time operating parameters of the first fan, and the real-time operating parameters of the second fan into the output force model of the second fan to obtain the output force of the second fan.

[0031] In one embodiment, the balance coefficient module includes:

[0032] The sorting unit is used to sort each robbing air operation parameter according to the relative deviation of each robbing air operation parameter to obtain the sorting data of each robbing air operation parameter;

[0033] The balance coefficient unit is used to determine the balance coefficient of each operating parameter according to the sorting data of each robbing air operation parameter.

[0034] An embodiment of the present invention also provides a computer device, including a memory, a processor, and a computer program stored on the memory and running on the processor. When the processor executes the computer program, the steps of the parallel operation fan leveling method are implemented.

[0035] An embodiment of the present invention also provides a computer-readable storage medium, on which a computer program is stored. When the computer program is executed by a processor, the steps of the parallel operation fan leveling method are implemented.

[0036] The parallel operation fan leveling method and device in the embodiment of the present invention first determine the relative deviation of each robbing air operation parameter according to the robbing air operation parameters of the fan to determine each balance coefficient, and then determine the fan output deviation value according to each balance coefficient and the real-time operation parameters of the fan to adjust the moving blade of the fan, which can effectively level the parallel operation fans with multiple operation parameters. Description of the Drawings

[0037] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0038] Figure 1 is the flowchart of the parallel operation fan leveling method in the embodiment of the present invention;

[0039] Figure 2 is the flowchart of S103 in the embodiment of the present invention;

[0040] Figure 3 is the flowchart of S201 in the embodiment of the present invention;

[0041] Figure 4 is the structural block diagram of the parallel operation fan leveling device in the embodiment of the present invention;

[0042] Figure 5 is the structural block diagram of the computer device in the embodiment of the present invention. Detailed implementation manners

[0043] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, rather than all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present invention.

[0044] Those skilled in the art know that the implementation manners of the present invention can be realized as a system, device, equipment, method or computer program product. Therefore, the present disclosure can be specifically realized in the following forms, namely: completely hardware, completely software (including firmware, resident software, microcode, etc.), or a combination of hardware and software.

[0045] In view of the unreasonable fan leveling method in the prior art, the embodiments of the present invention provide a parallel operation fan leveling method and device, which can effectively level the parallel operation fans with multiple operating parameters. The following will describe the present invention in detail with reference to the drawings.

[0046] Figure 1 is the flowchart of the parallel operation fan leveling method in the embodiment of the present invention. As Figure 1 shown, the parallel operation fan leveling method includes:

[0047] S101: Determine the relative deviation of each robbing operation parameter according to the robbing operation parameters of the first fan and the robbing operation parameters of the second fan.

[0048] In specific implementation, the relative deviation of each wind-grabbing operation parameter can be determined through the following formula:

[0049]

[0050] wherein, RD i is the relative deviation of the i-th wind-grabbing operation parameter, is the wind-grabbing operation parameter of the first fan, is the wind-grabbing operation parameter of the second fan.

[0051] The wind-grabbing operation parameters of the fans (including the wind-grabbing operation parameters of the first fan and the second fan) can adopt the corresponding current, air volume, moving vane opening, total pressure rise, etc. when wind-grabbing occurs in the historical data of the parallel-operating fans in the power plant.

[0052] S102: Determine the balance coefficient of each operation parameter according to the relative deviation of each wind-grabbing operation parameter.

[0053] In one embodiment, S102 includes:

[0054] Sort the relative deviations of each wind-grabbing operation parameter to obtain the sorting data of each wind-grabbing operation parameter, and determine the balance coefficient of each operation parameter according to the sorting data of each wind-grabbing operation parameter.

[0055] In specific implementation, sort the relative deviations of each wind-grabbing operation parameter in descending order to obtain the sorting data of each wind-grabbing operation parameter. The larger the relative deviation, the greater the contribution of the corresponding wind-grabbing operation parameter to the balance degree; use the AHP (Analytic Hierarchy Process) to determine the balance coefficient of each operation parameter according to the sorting data of each wind-grabbing operation parameter.

[0056] S103: Determine the fan output deviation value according to the balance coefficient of each operation parameter, the real-time operation parameter of the first fan, and the real-time operation parameter of the second fan.

[0057] Figure 2 is the flowchart of S103 in the embodiment of the present invention. As Figure 2 shown, S103 includes:

[0058] S201: Obtain the output of the first fan and the output of the second fan according to the balance coefficient of each operation parameter, the real-time operation parameter of the first fan, and the real-time operation parameter of the second fan.

[0059] Figure 3 is the flowchart of S201 in the embodiment of the present invention. As Figure 3 shown, S201 includes:

[0060] S301: Create the first fan output force model and the second fan output force model.

[0061] S302: Input the balance coefficient of each operating parameter, the real-time operating parameters of the first fan, and the real-time operating parameters of the second fan into the first fan output force model to obtain the first fan output force.

[0062] In one embodiment, the first fan output force model is as follows:

[0063]

[0064] Where, X A is the first fan output force, x i (A) is the real-time operating parameter of the first fan, x i (B) is the real-time operating parameter of the second fan, w i is the balance coefficient of the i-th operating parameter, and k is the number of operating parameters.

[0065] S303: Input the balance coefficient of each operating parameter, the real-time operating parameters of the first fan, and the real-time operating parameters of the second fan into the second fan output force model to obtain the second fan output force.

[0066] In one embodiment, the second fan output force model is as follows:

[0067]

[0068] Where, X B is the second fan output force.

[0069] S202: Determine the fan output force deviation value according to the first fan output force and the second fan output force.

[0070] Specifically, when implementing, the fan output force deviation value can be determined by the following formula:

[0071] D = X A - X B ;

[0072] Where, D is the fan output force deviation value.

[0073] The fan output force deviation value D generally ranges from -1 to 1. The closer D is to -1, it represents that the output force of the B-side fan (the second fan) is greater. The closer D is to 0, it represents that the output forces of the two sides of the fan are more balanced. The closer D is to 1, it represents that the output force of the A-side fan (the first fan) is greater.

[0074] S104: Adjust the moving blades of the first fan and the moving blades of the second fan according to the comparison result between the fan output force deviation value and the preset deviation threshold.

[0075] In specific implementation, the deviation threshold D m is between 0 and 1. When D ∈ [-D m , D m , the balance degree of the output of the bilateral fans is within the threshold range and no adjustment is required.

[0076] When D ∈ (D m , 1], it is necessary to appropriately close the moving blade of the first fan and at the same time open the moving blade of the second fan to reduce the fan output deviation value D to D ∈ [-D m , D m .

[0077] When D ∈ [-1, -D m ), it is necessary to appropriately open the moving blade of the first fan and at the same time close the moving blade of the second fan to increase the fan output deviation value D to D ∈ [-D m , D m .

[0078] Figure 1 The execution subject of the parallel operation fan leveling method shown can be a computer. From Figure 1 the process shown, it can be seen that the parallel operation fan leveling method in the embodiment of the present invention first determines the relative deviation of each robbing operation parameter according to the robbing operation parameters of the fans to determine each balance degree coefficient, and then determines the fan output deviation value according to each balance degree coefficient and the real-time operation parameters of the fans to adjust the moving blades of the fans, which can effectively level the parallel operation fans with multiple operation parameters.

[0079] The specific process of the embodiment of the present invention is as follows:

[0080] 1. Determine the relative deviation of each robbing operation parameter according to the robbing operation parameters of the first fan and the robbing operation parameters of the second fan.

[0081] 2. Sort each robbing operation parameter according to the relative deviation of each robbing operation parameter to obtain the sorting data of each robbing operation parameter.

[0082] 3. Determine the balance degree coefficient of each operation parameter according to the sorting data of each robbing operation parameter.

[0083] 4. Create a first fan output force model and a second fan output force model.

[0084] 5. Input the balance degree coefficient of each operation parameter, the real-time operation parameters of the first fan, and the real-time operation parameters of the second fan into the first fan output force model to obtain the first fan output force.

[0085] 6. Input the balance coefficient of each operating parameter, the real-time operating parameters of the first fan, and the real-time operating parameters of the second fan into the outlet force model of the second fan to obtain the outlet force of the second fan.

[0086] 7. Determine the fan output deviation value based on the outlet force of the first fan and the outlet force of the second fan.

[0087] 8. Adjust the moving blades of the first fan and the moving blades of the second fan according to the comparison result between the fan output deviation value and the preset deviation threshold.

[0088] In summary, the parallel operation fan leveling method in the embodiment of the present invention first determines the relative deviation of each robbing operation parameter according to the robbing operation parameters of the fans to determine each balance coefficient, and then determines the fan output deviation value according to each balance coefficient and the real-time operating parameters of the fans to adjust the moving blades of the fans, which can effectively level the parallel operation fans with multiple operating parameters.

[0089] Based on the same inventive concept, the embodiment of the present invention also provides a parallel operation fan leveling device. Since the principle of solving problems by this device is similar to that of the parallel operation fan leveling method, the implementation of this device can refer to the implementation of the method, and the repeated parts will not be described again.

[0090] Figure 4 It is the structural block diagram of the parallel operation fan leveling device in the embodiment of the present invention. As Figure 4 shown, the parallel operation fan leveling device includes:

[0091] The relative deviation module is used to determine the relative deviation of each robbing operation parameter according to the robbing operation parameters of the first fan and the robbing operation parameters of the second fan;

[0092] The balance coefficient module is used to determine the balance coefficient of each operating parameter according to the relative deviation of each robbing operation parameter;

[0093] The output deviation value module is used to determine the fan output deviation value according to the balance coefficient of each operating parameter, the real-time operating parameters of the first fan, and the real-time operating parameters of the second fan;

[0094] The fan adjustment module is used to adjust the moving blades of the first fan and the moving blades of the second fan according to the comparison result between the fan output deviation value and the preset deviation threshold.

[0095] In one of the embodiments, the output deviation value module includes:

[0096] The fan outlet force unit is used to obtain the outlet force of the first fan and the outlet force of the second fan according to the balance coefficient of each operating parameter, the real-time operating parameters of the first fan, and the real-time operating parameters of the second fan;

[0097] An output deviation value unit for determining a fan output deviation value based on the output strength of the first fan and the output strength of the second fan.

[0098] In one embodiment, the fan output strength unit includes:

[0099] A model creation subunit for creating a first fan output strength model and a second fan output strength model;

[0100] A first fan output strength subunit for inputting the balance coefficient of each operating parameter, the real-time operating parameters of the first fan, and the real-time operating parameters of the second fan into the first fan output strength model to obtain the output strength of the first fan;

[0101] A second fan output strength subunit for inputting the balance coefficient of each operating parameter, the real-time operating parameters of the first fan, and the real-time operating parameters of the second fan into the second fan output strength model to obtain the output strength of the second fan.

[0102] In one embodiment, the balance coefficient module includes:

[0103] A sorting unit for sorting each robbing air operation parameter according to the relative deviation of each robbing air operation parameter to obtain the sorting data of each robbing air operation parameter;

[0104] A balance coefficient unit for determining the balance coefficient of each operating parameter according to the sorting data of each robbing air operation parameter.

[0105] In summary, the parallel operation fan leveling device in the embodiment of the present invention first determines the relative deviation of each robbing air operation parameter according to the robbing air operation parameters of the fan to determine each balance coefficient, and then determines the fan output deviation value according to each balance coefficient and the real-time operating parameters of the fan to adjust the moving blade of the fan, which can effectively level the parallel operation fans with multiple operating parameters.

[0106] The embodiment of the present invention also provides a specific implementation manner of a computer device capable of implementing all steps in the parallel operation fan leveling method in the above embodiment. Figure 5 It is the structural block diagram of the computer device in the embodiment of the present invention. Refer to Figure 5 The computer device specifically includes the following contents:

[0107] A processor 501 and a memory 502.

[0108] The processor 501 is used to call the computer program in the memory 502. When the processor executes the computer program, it implements all steps in the parallel operation fan leveling method in the above embodiment. For example, when the processor executes the computer program, it implements the following steps:

[0109] Determine the relative deviation of each robbing operation parameter according to the robbing operation parameters of the first fan and the robbing operation parameters of the second fan;

[0110] Determine the balance coefficient of each operation parameter according to the relative deviation of each robbing operation parameter;

[0111] Determine the fan output deviation value according to the balance coefficient of each operation parameter, the real-time operation parameters of the first fan, and the real-time operation parameters of the second fan;

[0112] Adjust the moving blades of the first fan and the moving blades of the second fan according to the comparison result between the fan output deviation value and the preset deviation threshold.

[0113] In summary, the computer device according to the embodiments of the present invention first determines the relative deviation of each robbing operation parameter according to the robbing operation parameters of the fan to determine each balance coefficient, and then determines the fan output deviation value according to each balance coefficient and the real-time operation parameters of the fan to adjust the moving blades of the fan, which can effectively level the parallel operation fans with multiple operation parameters.

[0114] The embodiments of the present invention also provide a computer-readable storage medium capable of implementing all steps in the parallel operation fan leveling method in the above embodiments. A computer program is stored on the computer-readable storage medium. When the computer program is executed by a processor, all steps in the parallel operation fan leveling method in the above embodiments are implemented. For example, when the processor executes the computer program, the following steps are implemented:

[0115] Determine the relative deviation of each robbing operation parameter according to the robbing operation parameters of the first fan and the robbing operation parameters of the second fan;

[0116] Determine the balance coefficient of each operation parameter according to the relative deviation of each robbing operation parameter;

[0117] Determine the fan output deviation value according to the balance coefficient of each operation parameter, the real-time operation parameters of the first fan, and the real-time operation parameters of the second fan;

[0118] Adjust the moving blades of the first fan and the moving blades of the second fan according to the comparison result between the fan output deviation value and the preset deviation threshold.

[0119] In summary, the computer-readable storage medium according to the embodiments of the present invention first determines the relative deviation of each robbing operation parameter according to the robbing operation parameters of the fan to determine each balance coefficient, and then determines the fan output deviation value according to each balance coefficient and the real-time operation parameters of the fan to adjust the moving blades of the fan, which can effectively level the parallel operation fans with multiple operation parameters.

[0120] The specific embodiments described above further elaborate on the objectives, technical solutions, and beneficial effects of the present invention. It should be understood that the above description is only for the specific embodiments of the present invention and is not intended to limit the protection scope of the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included within the protection scope of the present invention.

[0121] Those skilled in the art can also understand that the various illustrative logical blocks, units, and steps listed in the embodiments of the present invention can be implemented by electronic hardware, computer software, or a combination of both. To clearly show the interchangeability of hardware and software, the above-mentioned various illustrative components, units, and steps have been generally described in terms of their functions. Whether such functions are implemented by hardware or software depends on the specific application and the design requirements of the entire system. Those skilled in the art can use various methods to implement the described functions for each specific application, but such implementation should not be construed as exceeding the protection scope of the embodiments of the present invention.

[0122] The various illustrative logical blocks, or units, or devices described in the embodiments of the present invention can be implemented or operated to perform the described functions by a general-purpose processor, a digital signal processor, an application-specific integrated circuit (ASIC), a field-programmable gate array, or other programmable logic devices, discrete gate or transistor logic, discrete hardware components, or any combination of the above designs. The general-purpose processor can be a microprocessor. Optionally, the general-purpose processor can also be any conventional processor, controller, microcontroller, or state machine. The processor can also be implemented by a combination of computing devices, such as a digital signal processor and a microprocessor, multiple microprocessors, one or more microprocessors combined with a digital signal processor core, or any other similar configuration.

[0123] The steps of the methods or algorithms described in the embodiments of the present invention can be directly embedded in hardware, software modules executed by a processor, or a combination of both. The software modules can be stored in a RAM memory, a flash memory, a ROM memory, an EPROM memory, an EEPROM memory, a register, a hard disk, a removable disk, a CD-ROM, or any other form of storage medium in the art. Exemplarily, the storage medium can be connected to the processor so that the processor can read information from the storage medium and write information to the storage medium. Optionally, the storage medium can also be integrated into the processor. The processor and the storage medium can be disposed in an ASIC, and the ASIC can be disposed in a user terminal. Optionally, the processor and the storage medium can also be disposed in different components of the user terminal.

[0124] In one or more exemplary designs, the functions described in embodiments of the present invention may be implemented in hardware, software, firmware, or any combination thereof. If implemented in software, the functions may be stored on a computer-readable medium or transmitted as one or more instructions or code on a computer-readable medium. A computer-readable medium includes both computer storage media and communication media that facilitate transfer of a computer program from one place to another. The storage media may be any available media that can be accessed by a general purpose or special purpose computer. By way of example, and not limitation, such computer-readable media can include RAM, ROM, EEPROM, CD-ROM or other optical disk storage, magnetic disk storage or other magnetic storage devices, or any other medium that can be used to carry or store program code in the form of instructions or data structures and that can be accessed by a general purpose or special purpose computer, or a general purpose or special purpose processor. In addition, any connection is properly termed a computer-readable medium. For example, if the software is transmitted from a website, server, or other remote source using a coaxial cable, fiber optic cable, twisted pair, DSL, or wireless technologies such as infrared, radio, and microwave, it is included in the definition of computer-readable medium. Disk and disc include compact disk, laser disk, optical disk, DVD, floppy disk, and Blu-ray disk, where disks usually reproduce data magnetically, while discs usually reproduce data optically with lasers. Combinations of the above should also be included within the scope of computer-readable media.

Claims

1. A method for leveling parallel - running fans, characterized in that, it includes: Determine the relative deviation of each robbing operation parameter according to the robbing operation parameters of the first fan and the robbing operation parameters of the second fan, where the robbing operation parameters adopt the current, air volume, moving vane opening and total pressure rise corresponding to the robbing in the historical data of the parallel - running fans in the power plant; determine the relative deviation of each robbing operation parameter through the following formula: Among them, RD i is the relative deviation of the i-th wind snatching operation parameter, is the wind snatching operation parameter of the first fan, is the wind snatching operation parameter of the second fan; the balance coefficient of each operation parameter is determined according to the relative deviation of each wind snatching operation parameter; Determine the fan output deviation value according to the balance coefficient of each operation parameter, the real - time operation parameters of the first fan and the real - time operation parameters of the second fan; Adjust the moving vane of the first fan and the moving vane of the second fan according to the comparison result of the fan output deviation value and the preset deviation threshold; where: When D ∈ [-D m , D m , the balance degree of the output of the bilateral fans is within the threshold range and no adjustment is required; when D ∈ (D m , 1], it is necessary to close the moving blade of the first fan and at the same time open the moving blade of the second fan to reduce D to D ∈ [-D m , D m ; when D ∈ [-1, -D m ), it is necessary to open the moving blade of the first fan and at the same time close the moving blade of the second fan to increase D to D ∈ [-D m , D m . Among them, D is the deviation value of the fan output, D m is the deviation threshold and D m is between 0 and 1.

2. The method for leveling parallel - running fans according to claim 1, characterized in that, Determining the fan output deviation value according to the balance coefficient of each operation parameter, the real - time operation parameters of the first fan and the real - time operation parameters of the second fan includes: Obtain the output degree of the first fan and the output degree of the second fan according to the balance coefficient of each operation parameter, the real - time operation parameters of the first fan and the real - time operation parameters of the second fan; Determine the fan output deviation value according to the output degree of the first fan and the output degree of the second fan.

3. The method for leveling parallel - running fans according to claim 2, characterized in that, Obtaining the output degree of the first fan and the output degree of the second fan according to the balance coefficient of each operation parameter, the real - time operation parameters of the first fan and the real - time operation parameters of the second fan includes: Create an output - degree model for the first fan and an output - degree model for the second fan; Input the balance coefficient of each operation parameter, the real - time operation parameters of the first fan and the real - time operation parameters of the second fan into the output - degree model of the first fan to obtain the output degree of the first fan; Input the balance coefficient of each operation parameter, the real - time operation parameters of the first fan and the real - time operation parameters of the second fan into the output - degree model of the second fan to obtain the output degree of the second fan.

4. The method for leveling parallel - running fans according to claim 2, characterized in that, Determining the balance coefficient of each operation parameter according to the relative deviation of each robbing operation parameter includes: Sort the robbing operation parameters according to the relative deviation of each robbing operation parameter to obtain the sorting data of each robbing operation parameter; Determine the balance coefficient of each operation parameter according to the sorting data of each robbing operation parameter.

5. A device for leveling parallel - running fans, characterized in that, it includes: A relative - deviation module, used to determine the relative deviation of each robbing operation parameter according to the robbing operation parameters of the first fan and the robbing operation parameters of the second fan, where the robbing operation parameters adopt the current, air volume, moving vane opening and total pressure rise corresponding to the robbing in the historical data of the parallel - running fans in the power plant; determine the relative deviation of each robbing operation parameter through the following formula: Among them, RD i is the relative deviation of the i-th wind-snatching operation parameter, is the wind-snatching operation parameter of the first fan, is the wind-snatching operation parameter of the second fan; A balance - coefficient module, used to determine the balance coefficient of each operation parameter according to the relative deviation of each robbing operation parameter; Output deviation value module, configured to determine the fan output deviation value according to the balance coefficient of each operating parameter, the real-time operating parameters of the first fan, and the real-time operating parameters of the second fan; Fan adjustment module, configured to adjust the moving blades of the first fan and the moving blades of the second fan according to the comparison result between the fan output deviation value and a preset deviation threshold; wherein: When D ∈ [-D m , D m , the balance degree of the output of the bilateral fans is within the threshold range and no adjustment is required; when D ∈ (D m , 1], it is necessary to close the moving blade of the first fan and open the moving blade of the second fan at the same time to reduce D to D ∈ [-D m , D m ; when D ∈ [-1, -D m ), it is necessary to open the moving blade of the first fan and close the moving blade of the second fan at the same time to increase D to D ∈ [-D m , D m . where D is the deviation value of the fan output, D m is the deviation threshold and D m is between 0 and 1.

6. The parallel operation fan leveling device according to claim 5, characterized in that the output deviation value module includes: Fan output degree unit, configured to obtain the output degree of the first fan and the output degree of the second fan according to the balance coefficient of each operating parameter, the real-time operating parameters of the first fan, and the real-time operating parameters of the second fan; Output deviation value unit, configured to determine the fan output deviation value according to the output degree of the first fan and the output degree of the second fan.

7. The parallel operation fan leveling device according to claim 6, characterized in that the fan output degree unit includes: Model creation sub-unit, configured to create a first fan output degree model and a second fan output degree model; First fan output degree sub-unit, configured to input the balance coefficient of each operating parameter, the real-time operating parameters of the first fan, and the real-time operating parameters of the second fan into the first fan output degree model to obtain the output degree of the first fan; Second fan output degree sub-unit, configured to input the balance coefficient of each operating parameter, the real-time operating parameters of the first fan, and the real-time operating parameters of the second fan into the second fan output degree model to obtain the output degree of the second fan.

8. The parallel operation fan leveling device according to claim 6, characterized in that the balance coefficient module includes: Sorting unit, configured to sort each robbing operation parameter according to the relative deviation of each robbing operation parameter to obtain the sorting data of each robbing operation parameter; Balance coefficient unit, configured to determine the balance coefficient of each operating parameter according to the sorting data of each robbing operation parameter.

9. A computer device, comprising a memory, a processor, and a computer program stored on the memory and running on the processor, characterized in that when the processor executes the computer program, the steps of the parallel operation fan leveling method according to any one of claims 1 to 4 are implemented.

10. A computer-readable storage medium, on which a computer program is stored, characterized in that when the computer program is executed by a processor, the steps of the parallel operation fan leveling method according to any one of claims 1 to 4 are implemented.

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