Secondary air damper control method, device, medium and electronic equipment

Abstract

The present disclosure relates to a secondary air damper control method, device, medium and electronic device. The method includes: obtaining current coal quantity information and current unit power information; determining a coal quantity change rate according to the current coal quantity information and the coal quantity information at the previous moment; if the coal quantity change rate is greater than a preset coal quantity change rate threshold, determining a target opening degree of the secondary air damper according to the current coal quantity information and the current unit power information; controlling the opening degree of the secondary air damper according to the target opening degree. After the coal is added to the furnace for a period of time, it starts to burn, that is, the change of the coal quantity information is ahead of the change of the unit power information. Therefore, when the unit is not in a stable load state, according to the current coal quantity information and the current unit power information, the target opening degree of the secondary air damper can be determined in advance to timely and accurately adjust the opening degree of the secondary air damper, so that the unit power information and the coal quantity information are always in a balanced state, and the coal combustion is in an optimal state.

Description

Technical Field

[0001] The present disclosure relates to the technical field of automatic control of thermal power plants in the field of coal combustion, and specifically, to a secondary air damper control method, device, medium, and electronic device. Background Art

[0002] The combustion air of a pulverized coal boiler is divided into primary air and secondary air. The pulverized coal carried by the primary air enters the furnace and burns by the oxygen provided by the secondary air. The secondary air is injected into the furnace at a high speed through the secondary air nozzles of the pulverized coal burners. The air volume of each secondary air nozzle can be adjusted by changing the opening degree of the corresponding air damper, thereby changing the combustion process or intensity. The control method of the secondary air damper is of great significance for the combustion optimization of the pulverized coal boiler.

[0003] When the unit is in a stable load state, that is, when the coal quantity change rate does not change, the unit power and the coal quantity are in a balanced state. At this time, the opening degree of the secondary air damper is at the optimal operating point corresponding to the current state; once the coal quantity change rate changes, the original balance will be broken, and the opening degree of the secondary air damper will no longer be at the optimal operating point corresponding to the current state. Thus, it will have an adverse impact on combustion. Summary of the Invention

[0004] The purpose of the present disclosure is to provide a secondary air damper control method, device, medium, and electronic device to timely and accurately adjust the opening degree of the secondary air damper, so that the unit power and the coal quantity are always in a balanced state, and the coal combustion is in the best state.

[0005] To achieve the above purpose, the first aspect of the present disclosure provides a secondary air damper control method, which includes:

[0006] Obtain the current coal quantity information and the current unit power information;

[0007] Determine the coal quantity change rate according to the current coal quantity information and the coal quantity information at the previous moment;

[0008] If the coal quantity change rate is greater than the preset coal quantity change rate threshold, determine the target opening degree of the secondary air damper according to the current coal quantity information and the current unit power information;

[0009] Control the opening degree of the secondary air damper according to the target opening degree.

[0010] Optionally, the determining the target opening degree of the secondary air damper according to the current coal quantity information and the current unit power information includes:

[0011] Determine the basic opening degree of the secondary air damper according to the current unit power information;

[0012] Determine the compensation opening degree of the secondary air damper according to the current coal quantity information;

[0013] Determine the target opening based on the sum of the base opening and the compensation opening.

[0014] Optionally, the determining the base opening of the secondary air damper according to the current unit power information includes:

[0015] Determine the base opening of the secondary air damper corresponding to the current unit power information according to the pre-determined correspondence between the unit power information and the base opening of the secondary air damper.

[0016] Optionally, the determining the compensation opening of the secondary air damper according to the current coal quantity information includes:

[0017] Determine the compensation opening of the secondary air damper corresponding to the current coal quantity information according to the pre-determined correspondence between the coal quantity information and the compensation opening of the secondary air damper.

[0018] Optionally, the controlling the opening of the secondary air damper according to the target opening includes:

[0019] Generate a corresponding damper control command according to the target opening;

[0020] If the duration since the generation of the damper control command reaches a preset duration, send the damper control command to the control actuator of the secondary air damper to control the opening of the secondary air damper.

[0021] Optionally, the method further includes:

[0022] If the coal quantity change rate is not greater than the coal quantity change rate threshold, determine the base opening of the secondary air damper corresponding to the current unit power information according to the pre-determined correspondence between the unit power information and the base opening of the secondary air damper;

[0023] Determine the base opening of the secondary air damper corresponding to the current unit power information as the target opening.

[0024] A second aspect of the present disclosure provides a secondary air damper control device, which includes:

[0025] An acquisition module, configured to acquire the current coal quantity information and the current unit power information;

[0026] A first determination module, configured to determine the coal quantity change rate according to the current coal quantity information and the coal quantity information at the previous moment;

[0027] A second determination module, configured to, if the coal quantity change rate is greater than a preset coal quantity change rate threshold, determine the target opening of the secondary air damper according to the current coal quantity information and the current unit power information;

[0028] A control module for controlling the opening degree of the secondary air damper according to the target opening degree.

[0029] Optionally, the second determination module includes:

[0030] A first determination sub-module for determining the basic opening degree of the secondary air damper according to the current unit power information;

[0031] A second determination sub-module for determining the compensation opening degree of the secondary air damper according to the current coal quantity information;

[0032] A third determination sub-module for determining the target opening degree according to the sum of the basic opening degree and the compensation opening degree.

[0033] Optionally, the first determination sub-module is used to determine the basic opening degree of the secondary air damper in the following manner:

[0034] Determine the basic opening degree of the secondary air damper corresponding to the current unit power information according to the pre-determined corresponding relationship between the unit power information and the basic opening degree of the secondary air damper.

[0035] Optionally, the second determination sub-module is used to determine the compensation opening degree of the secondary air damper in the following manner:

[0036] Determine the compensation opening degree of the secondary air damper corresponding to the current coal quantity information according to the pre-determined corresponding relationship between the coal quantity information and the compensation opening degree of the secondary air damper.

[0037] Optionally, the control module includes:

[0038] An instruction generation sub-module for generating a corresponding damper control instruction according to the target opening degree;

[0039] A delay sub-module for, if the duration since the generation of the damper control instruction reaches a preset duration, sending the damper control instruction to the control actuator of the secondary air damper to control the opening degree of the secondary air damper.

[0040] Optionally, the device further includes:

[0041] A third determination module for, if the coal quantity change rate is not greater than the coal quantity change rate threshold, determining the basic opening degree of the secondary air damper corresponding to the current unit power information according to the pre-determined corresponding relationship between the unit power information and the basic opening degree of the secondary air damper;

[0042] A fourth determination module for determining the basic opening degree of the secondary air damper corresponding to the current unit power information as the target opening degree.

[0043] A third aspect of the present disclosure provides an electronic device, including:

[0044] A memory storing a computer program thereon;

[0045] A controller, when the computer program is executed by the controller, implementing the steps of the method provided in the first aspect of the present disclosure.

[0046] A fourth aspect of the present disclosure provides a non-transitory computer-readable storage medium storing a computer program thereon, and when the program is executed by a processor, implementing the steps of the method provided in the first aspect of the present disclosure.

[0047] Through the above technical solutions, the current coal quantity information and the current unit power information are obtained, and according to the current coal quantity information and the coal quantity information at the previous moment, the coal quantity change rate is determined, and it can be determined whether the unit is in a stable load state. If the coal quantity change rate is greater than a preset coal quantity change rate threshold, according to the current coal quantity information and the current unit power information, the target opening degree of the secondary air damper is determined, and according to the target opening degree, the opening degree of the secondary air damper is controlled. After the coal is added to the furnace for a period of time, it starts to burn, that is, the change in coal quantity information is ahead of the change in unit power information. Therefore, when the unit is not in a stable load state, according to the current coal quantity information and the current unit power information, the target opening degree of the secondary air damper can be determined in advance to adjust the opening degree of the secondary air damper timely and accurately, so that the unit power information and the coal quantity information are always in a balanced state, and the coal combustion is in an optimal state.

[0048] Other features and advantages of the present disclosure will be described in detail in the subsequent specific implementation section. BRIEF DESCRIPTION OF THE DRAWINGS

[0049] The drawings are used to provide a further understanding of the present disclosure, and constitute a part of the specification, and are used to explain the present disclosure together with the following specific implementation, but do not constitute a limitation to the present disclosure. In the drawings:

[0050] Figure 1 is a flowchart of a secondary air damper control method provided by an exemplary embodiment of the present disclosure;

[0051] Figure 2 is a block diagram of a secondary air damper control device provided by an exemplary embodiment of the present disclosure;

[0052] Figure 3 is a block diagram of an electronic device provided by an exemplary embodiment of the present disclosure. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0053] The following will describe in detail the specific implementation of the present disclosure with reference to the drawings. It should be understood that the specific implementation described herein is only used to illustrate and explain the present disclosure, and is not used to limit the present disclosure.

[0054] It should be noted that all actions of obtaining signals, information or data in this disclosure are carried out on the premise of complying with the corresponding data protection regulations and policies of the country where the location is located and obtaining authorization from the owner of the corresponding device.

[0055] Figure 1 It is a flowchart of a secondary air damper control method provided by an exemplary embodiment of the present disclosure. As Figure 1 shown, the method may include S101 to S104.

[0056] S101, obtain the current coal quantity information and the current unit power information.

[0057] Exemplarily, the current coal quantity information can be obtained through a preset gravity sensor, and the current unit power information can be obtained through a preset power sensor. The obtained current coal quantity information and current unit power information can provide data support for determining the target opening of the secondary air damper.

[0058] S102, determine the coal quantity change rate according to the current coal quantity information and the coal quantity information at the previous moment.

[0059] Exemplarily, the change amount information of the coal quantity can be determined according to the difference between the current coal quantity information and the coal quantity information at the previous moment, and the coal quantity change rate can be determined according to the ratio of the change amount information of the coal quantity to the coal quantity information at the previous moment. In this way, it can be determined whether the unit is in a stable load state, that is, it can be determined whether the opening of the secondary air damper is at the optimal operating point corresponding to the current state, so as to adjust the opening of the secondary air damper.

[0060] S103, if the coal quantity change rate is greater than a preset coal quantity change rate threshold, determine the target opening of the secondary air damper according to the current coal quantity information and the current unit power information.

[0061] Exemplarily, the coal quantity change rate threshold can be preset, for example, it can be set to 0. If the coal quantity change rate changes, that is, the unit is no longer in a stable load state, the target opening of the secondary air damper can be determined according to the current coal quantity information and the current unit power information. After the coal is added to the furnace for a period of time, it starts to burn, that is, the change of the coal quantity information is ahead of the change of the unit power information. Therefore, by synthesizing the current coal quantity information and the current unit power information, the target opening of the secondary air damper can be determined in advance to adjust the secondary air damper in a timely and accurate manner, so that the unit power information and the coal quantity information are always in a balanced state and the coal combustion is in the best state.

[0062] S104, control the opening of the secondary air damper according to the target opening.

[0063] Exemplarily, when the controller determines the target opening degree, a corresponding damper control instruction can be generated and sent to the control actuator of the secondary damper to control the opening degree of the secondary damper, so that the coal combustion is in the best state.

[0064] Through the above technical solution, the current coal quantity information and the current unit power information are obtained, and according to the current coal quantity information and the coal quantity information at the previous moment, the coal quantity change rate is determined, and it can be determined whether the unit is in a stable load state. If the coal quantity change rate is greater than the preset coal quantity change rate threshold, according to the current coal quantity information and the current unit power information, the target opening degree of the secondary damper is determined, and according to the target opening degree, the opening degree of the secondary damper is controlled. After the coal is added to the furnace for a period of time, it starts to burn, that is, the change of coal quantity information is ahead of the change of unit power information. Therefore, when the unit is not in a stable load state, according to the current coal quantity information and the current unit power information, the target opening degree of the secondary damper can be determined in advance to adjust the opening degree of the secondary damper in a timely and accurate manner, so that the unit power information and the coal quantity information are always in a balanced state, and the coal combustion is in the best state.

[0065] Optionally, in S103, determining the target opening degree of the secondary damper according to the current coal quantity information and the current unit power information may include:

[0066] Determine the basic opening degree of the secondary damper according to the current unit power information;

[0067] Determine the compensation opening degree of the secondary damper according to the current coal quantity information;

[0068] Determine the target opening degree according to the sum of the basic opening degree and the compensation opening degree.

[0069] Exemplarily, determining the basic opening degree of the secondary damper according to the current unit power information may include:

[0070] Determine the basic opening degree of the secondary damper corresponding to the current unit power information according to the pre-determined corresponding relationship between the unit power information and the basic opening degree of the secondary damper.

[0071] Exemplarily, the corresponding relationship between the unit power information and the basic opening degree of the secondary damper can be preset through the coal combustion test results. This corresponding relationship can be represented by means such as functions and mapping tables. For example, as shown in Table 1, the basic opening degree of the secondary damper corresponding to the current unit power information can be determined by looking up this preset corresponding relationship. For example, when the current power information is 300, by looking up this preset corresponding relationship, the basic opening degree of the secondary damper can be determined to be 20.

[0072] Table 1

[0073] Unit power information 0 300 400 500 600 700 Basic opening of the secondary air damper 20 20 10 2 -6 -6

[0074] Exemplarily, determining the compensation opening degree of the secondary air damper according to the current coal quantity information may include:

[0075] Determining the compensation opening degree of the secondary air damper corresponding to the current coal quantity information according to the pre-determined corresponding relationship between the coal quantity information and the compensation opening degree of the secondary air damper.

[0076] Exemplarily, the corresponding relationship between the coal quantity information and the compensation opening degree of the secondary air damper can be preset through the results of coal combustion tests. This corresponding relationship can be represented, for example, by functions, mapping tables, etc. For example, as shown in Table 2, the compensation opening degree of the secondary air damper corresponding to the current coal quantity information can be determined by looking up this preset corresponding relationship. For example, when the current coal quantity information is 30, the compensation opening degree of the secondary air damper can be determined to be 5 by looking up this preset corresponding relationship.

[0077] Table 2

[0078] Coal quantity information 0 30 55 100 200 300 Compensated opening of the secondary air damper 5 5 58 58 58 58

[0079] As described above, if the basic opening degree of the secondary air damper is determined to be 20 and the compensation opening degree is 5 through the content in Table 1 and Table 2, then the target opening degree of the secondary air damper can be determined to be 25 (20 + 5). In this way, the target opening degree of the secondary air damper can be accurately and timely determined by combining the unit power information and the coal quantity information, so that the coal combustion is in the best state.

[0080] Optionally, in S104, controlling the opening degree of the secondary air damper according to the target opening degree may include:

[0081] Generating a corresponding damper control instruction according to the target opening degree;

[0082] If the time duration since the generation of the damper control instruction reaches the preset time duration, then sending the damper control instruction to the control actuator of the secondary air damper to control the opening degree of the secondary air damper.

[0083] Exemplarily, during the operation of the unit, after the coal is added to the furnace for a period of time, it starts to burn instead of burning immediately, that is, the change in coal quantity information precedes the change in unit power information. According to the current coal quantity information and the current unit power information, the target opening degree of the secondary air damper determined is not the opening degree corresponding to the actually burned coal quantity at the current moment, but the target opening degree of the secondary air damper determined in advance when the burned coal quantity reaches the current coal quantity information. For example, the currently obtained coal quantity information is 300 tons, but the currently actually burned coal quantity may be 200 tons, and the target opening degree determined by the above method corresponds to the combustion state when 300 tons of coal are burned, but does not correspond to the combustion state of the actually burned coal quantity (200 tons) at the current moment, that is, the target opening degree does not correspond to the combustion state at the current moment. In order to ensure that the opening degree of the secondary air damper corresponds to the combustion state at the current moment, the opening degree of the damper can be adjusted with a time delay. Among them, the preset duration can be set to 10 s. In the case of generating a corresponding damper control command according to the target opening degree, if the duration since the generation of the damper control command reaches 10 s, the controller can send the damper control command to the control actuator of the secondary air damper to control the opening degree of the secondary air damper so that the coal combustion is in the best state.

[0084] Optionally, the secondary air damper control method may further include:

[0085] If the coal quantity change rate is not greater than the coal quantity change rate threshold, then according to the corresponding relationship between the pre-determined unit power information and the basic opening degree of the secondary air damper, determine the basic opening degree of the secondary air damper corresponding to the current unit power information;

[0086] Determine the basic opening degree of the secondary air damper corresponding to the current unit power information as the target opening degree.

[0087] As described above, if the coal quantity change rate is not greater than the coal quantity change rate threshold, it can be determined that the coal quantity change rate has not changed, and the unit power and the coal quantity are in a balanced state. According to the corresponding relationship between the pre-determined unit power information and the basic opening degree of the secondary air damper, such as Table 1, determine the basic opening degree of the secondary air damper corresponding to the current unit power information, and determine the basic opening degree as the target opening degree. In this way, the confirmation process of the damper opening degree can be simplified, unnecessary opening degree compensation can be avoided, and the coal combustion can be in the best state.

[0088] Based on the same inventive concept, the present disclosure also provides a secondary air damper control device. Figure 2 It is a block diagram of a secondary air damper control device 200 provided by an exemplary embodiment of the present disclosure. Refer to Figure 2 As shown in, the secondary air damper control device 200 may include:

[0089] An acquisition module 201, configured to acquire current coal quantity information and current unit power information;

[0090] The first determination module 202 is configured to determine the coal quantity change rate according to the current coal quantity information and the coal quantity information at the previous moment.

[0091] The second determination module 203 is configured to, if the coal quantity change rate is greater than a preset coal quantity change rate threshold, determine the target opening degree of the secondary air damper according to the current coal quantity information and the current unit power information.

[0092] The control module 204 is configured to control the opening degree of the secondary air damper according to the target opening degree.

[0093] Through the above technical solution, the current coal quantity information and the current unit power information are obtained, and the coal quantity change rate is determined according to the current coal quantity information and the coal quantity information at the previous moment, so as to determine whether the unit is in a stable load state. If the coal quantity change rate is greater than a preset coal quantity change rate threshold, the target opening degree of the secondary air damper is determined according to the current coal quantity information and the current unit power information, and the opening degree of the secondary air damper is controlled according to the target opening degree. After the coal is added to the furnace for a period of time, it starts to burn, that is, the change of the coal quantity information is ahead of the change of the unit power information. Therefore, when the unit is not in a stable load state, the target opening degree of the secondary air damper can be determined in advance according to the current coal quantity information and the current unit power information, so as to adjust the opening degree of the secondary air damper in a timely and accurate manner, so that the unit power information and the coal quantity information are always in a balanced state, and the coal combustion is in an optimal state.

[0094] Optionally, the second determination module 203 includes:

[0095] The first determination sub-module is configured to determine the basic opening degree of the secondary air damper according to the current unit power information.

[0096] The second determination sub-module is configured to determine the compensation opening degree of the secondary air damper according to the current coal quantity information.

[0097] The third determination sub-module is configured to determine the target opening degree according to the sum of the basic opening degree and the compensation opening degree.

[0098] Optionally, the first determination sub-module is configured to determine the basic opening degree of the secondary air damper in the following manner:

[0099] According to the pre-determined corresponding relationship between the unit power information and the basic opening degree of the secondary air damper, determine the basic opening degree of the secondary air damper corresponding to the current unit power information.

[0100] Optionally, the second determination sub-module is configured to determine the compensation opening degree of the secondary air damper in the following manner:

[0101] Determine the compensation opening degree of the secondary air damper corresponding to the current coal quantity information according to the corresponding relationship between the pre-determined coal quantity information and the compensation opening degree of the secondary air damper.

[0102] Optionally, the control module 204 includes:

[0103] An instruction generation sub-module, configured to generate a corresponding air damper control instruction according to the target opening degree;

[0104] A delay sub-module, configured to, if the duration since the generation of the air damper control instruction reaches a preset duration, send the air damper control instruction to the control actuator of the secondary air damper to control the opening degree of the secondary air damper.

[0105] Optionally, the device 200 further includes:

[0106] A third determination module, configured to, if the coal quantity change rate is not greater than the coal quantity change rate threshold, determine the basic opening degree of the secondary air damper corresponding to the current unit power information according to the corresponding relationship between the pre-determined unit power information and the basic opening degree of the secondary air damper;

[0107] A fourth determination module, configured to determine the basic opening degree of the secondary air damper corresponding to the current unit power information as the target opening degree.

[0108] Regarding the device in the above embodiments, the specific manners in which each module performs operations have been described in detail in the embodiments related to the method, and will not be elaborated herein.

[0109] Figure 3 It is a block diagram of an electronic device 700 shown according to an exemplary embodiment. As Figure 3 shown, the electronic device 700 may include: a processor 701, a memory 702. The electronic device 700 may further include one or more of a multimedia component 703, an input / output (I / O) interface 704, and a communication component 705.

[0110] Among them, the processor 701 is used to control the overall operation of the electronic device 700 to complete all or part of the steps in the above secondary air damper control method. The memory 702 is used to store various types of data to support the operation of the electronic device 700. These data may include, for example, instructions for any application or method operating on the electronic device 700, as well as application-related data, such as contact data, sent and received messages, pictures, audio, video, and so on. The memory 702 can be implemented by any type of volatile or non-volatile storage device or a combination thereof, such as Static Random Access Memory (SRAM), Electrically Erasable Programmable Read-Only Memory (EEPROM), Erasable Programmable Read-Only Memory (EPROM), Programmable Read-Only Memory (PROM), Read-Only Memory (ROM), magnetic memory, flash memory, a magnetic disk, or an optical disc. The multimedia component 703 may include a screen and an audio component. Among them, the screen may be a touch screen, and the audio component is used to output and / or input audio signals. For example, the audio component may include a microphone, and the microphone is used to receive external audio signals. The received audio signals may be further stored in the memory 702 or sent through the communication component 705. The audio component also includes at least one speaker for outputting audio signals. The I / O interface 704 provides an interface between the processor 701 and other interface modules, and the above other interface modules may be a keyboard, a mouse, buttons, etc. These buttons may be virtual buttons or physical buttons. The communication component 705 is used for wired or wireless communication between the electronic device 700 and other devices. Wireless communication, such as Wi-Fi, Bluetooth, Near Field Communication (NFC), 2G, 3G, 4G, NB-IOT, eMTC, or other 5G, etc., or a combination of one or more of them, is not limited here. Therefore, the corresponding communication component 705 may include: a Wi-Fi module, a Bluetooth module, an NFC module, and so on.

[0111] In an exemplary embodiment, the electronic device 700 may be implemented by one or more application specific integrated circuits (ASICs), digital signal processors (DSPs), digital signal processing devices (DSPDs), programmable logic devices (PLDs), field programmable gate arrays (FPGAs), controllers, microcontrollers, microprocessors, or other electronic components, and is used to execute the above-mentioned secondary air damper control method.

[0112] In another exemplary embodiment, a computer-readable storage medium including program instructions is further provided. When the program instructions are executed by a processor, the steps of the above-mentioned secondary air damper control method are implemented. For example, the computer-readable storage medium may be the above-mentioned memory 702 including program instructions, and the above program instructions may be executed by the processor 701 of the electronic device 700 to complete the above-mentioned secondary air damper control method.

[0113] In another exemplary embodiment, a computer program product is further provided. The computer program product includes a computer program that can be executed by a programmable device, and the computer program has a code portion for executing the above-mentioned secondary air damper control method when executed by the programmable device.

[0114] The preferred embodiments of the present disclosure have been described in detail above in conjunction with the accompanying drawings. However, the present disclosure is not limited to the specific details in the above embodiments. Within the scope of the technical concept of the present disclosure, various simple modifications can be made to the technical solutions of the present disclosure, and these simple modifications all fall within the protection scope of the present disclosure.

[0115] In addition, it should be noted that, in the above specific embodiments, the various specific technical features described can be combined in any suitable manner without contradiction. To avoid unnecessary repetition, the present disclosure does not separately describe various possible combination methods.

[0116] Furthermore, any combination can be made between various different embodiments of the present disclosure as long as it does not violate the idea of the present disclosure, and it should also be regarded as the content disclosed by the present disclosure.

Claims

1. A secondary air damper control method, characterized in that, The method includes: Obtaining current coal quantity information and current unit power information; Determining the coal quantity change rate according to the current coal quantity information and the coal quantity information at the previous moment; If the coal quantity change rate is greater than a preset coal quantity change rate threshold, determining the target opening degree of the secondary air damper according to the current coal quantity information and the current unit power information; Controlling the opening degree of the secondary air damper according to the target opening degree; Wherein, determining the target opening degree of the secondary air damper according to the current coal quantity information and the current unit power information includes: Determining the basic opening degree of the secondary air damper according to the current unit power information; Determining the compensation opening degree of the secondary air damper according to the current coal quantity information; Determining the target opening degree according to the sum of the basic opening degree and the compensation opening degree.

2. The method according to claim 1, characterized in that, Determining the basic opening degree of the secondary air damper according to the current unit power information includes: Determining the basic opening degree of the secondary air damper corresponding to the current unit power information according to the pre-determined corresponding relationship between the unit power information and the basic opening degree of the secondary air damper.

3. The method according to claim 1, wherein Determining the compensation opening degree of the secondary air damper according to the current coal quantity information includes: Determining the compensation opening degree of the secondary air damper corresponding to the current coal quantity information according to the pre-determined corresponding relationship between the coal quantity information and the compensation opening degree of the secondary air damper.

4. The method according to any one of claims 1 to 3, characterized in that Controlling the opening degree of the secondary air damper according to the target opening degree includes: Generating a corresponding damper control command according to the target opening degree; If the time duration since the generation of the damper control command reaches a preset time duration, sending the damper control command to the control execution mechanism of the secondary air damper to control the opening degree of the secondary air damper.

5. The method according to any one of claims 1 to 3, characterized in that, The method further includes: If the coal quantity change rate is not greater than the coal quantity change rate threshold, determining the basic opening degree of the secondary air damper corresponding to the current unit power information according to the pre-determined corresponding relationship between the unit power information and the basic opening degree of the secondary air damper; Determining the basic opening degree of the secondary air damper corresponding to the current unit power information as the target opening degree.

6. A secondary air damper control device, characterized in that, The device includes: An obtaining module, configured to obtain current coal quantity information and current unit power information; A first determining module, configured to determine the coal quantity change rate according to the current coal quantity information and the coal quantity information at the previous moment; A second determining module, configured to determine the target opening degree of the secondary air damper according to the current coal quantity information and the current unit power information if the coal quantity change rate is greater than a preset coal quantity change rate threshold; A control module, configured to control the opening degree of the secondary air damper according to the target opening degree; Wherein, the second determining module includes: A first determining sub-module, configured to determine the basic opening degree of the secondary air damper according to the current unit power information; A second determining sub-module, configured to determine the compensation opening degree of the secondary air damper according to the current coal quantity information; A third determining sub-module, configured to determine the target opening degree according to the sum of the basic opening degree and the compensation opening degree.

7. The device according to claim 6, characterized in that, The first determining sub-module is used to determine the basic opening degree of the secondary air damper by the following method: Determine the basic opening degree of the secondary air damper corresponding to the current unit power information according to the corresponding relationship between the pre-determined unit power information and the basic opening degree of the secondary air damper.

8. The device according to claim 6, characterized in that, The second determination sub-module is used to determine the compensation opening degree of the secondary air damper in the following manner: Determine the compensation opening degree of the secondary air damper corresponding to the current coal quantity information according to the corresponding relationship between the pre-determined coal quantity information and the compensation opening degree of the secondary air damper.

9. The device according to any one of claims 6 to 8, characterized in that The control module includes: An instruction generation sub-module, configured to generate a corresponding damper control instruction according to the target opening degree; A delay sub-module, configured to, if the duration since the generation of the damper control instruction reaches a preset duration, send the damper control instruction to the control actuator of the secondary air damper to control the opening degree of the secondary air damper.

10. The device according to any one of claims 6-8, characterized in that, The device further includes: A third determination module, configured to, if the coal quantity change rate is not greater than the coal quantity change rate threshold, determine the basic opening degree of the secondary air damper corresponding to the current unit power information according to the corresponding relationship between the pre-determined unit power information and the basic opening degree of the secondary air damper; A fourth determination module, configured to determine the basic opening degree of the secondary air damper corresponding to the current unit power information as the target opening degree.

11. A non-transitory computer-readable storage medium having a computer program stored thereon, characterized in that, When the program is executed by a processor, the steps of the method according to any one of claims 1-5 are implemented.

12. An electronic device, characterized in that, It includes: A memory, on which a computer program is stored; A processor, configured to execute the computer program in the memory to implement the steps of the method according to any one of claims 1-5.

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