Boiler operation parameter determination method and device, medium and terminal

Abstract

The invention discloses a boiler operation parameter determination method and device, a medium and a terminal, relates to the technical field of coal-fired power generation boiler control, and mainly aims at solving the problem of hysteresis of boiler operation parameter setting in an existing method. The method comprises the following steps: screening boiler operation parameter items for boiler combustion efficiency from a plurality of to-be-determined boiler operation parameter items according to importance parameters and significance parameters of each to-be-determined boiler operation parameter item for the boiler combustion efficiency; and according to the importance parameter and the significance parameter of each to-be-determined boiler operation parameter item for the pollutant emission concentration, screening out a boiler operation parameter item for the pollutant emission concentration from the plurality of to-be-determined boiler operation parameter items, and based on the screened-out boiler operation parameter item, determining the pollutant emission concentration of the to-be-determined boiler. And constructing a minimum cost objective function between the boiler operation cost and the screened boiler operation parameter items, and determining boiler operation parameters by solving the minimum cost objective function.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of coal-fired power plant boiler control, in particular to a method and device for determining boiler operation parameters, a medium and a terminal. BACKGROUND

[0002] As the core equipment of thermal power generation and industrial energy supply, the combustion efficiency of a coal-fired boiler directly affects energy costs, and the pollutant emission concentration is related to environmental compliance. Therefore, the operation parameters of the boiler need to be set to meet the requirements of combustion efficiency and pollutant emission concentration. The boiler operation parameter items that need to be set include, but are not limited to, the oxygen content at the furnace outlet, the secondary air distribution mode, the burner swing angle, the overfire air swing angle, the overfire air door opening degree, and the secondary air box pressure.

[0003] In the existing method, the boiler operation parameters are usually set by relying on human experience. Specifically, the trial-and-error method can be used to change the parameters of the boiler one by one to adjust the operation parameters of the boiler.

[0004] However, on the one hand, due to the hysteresis of human response, it is difficult to meet the demand for real-time adjustment of boiler operation parameters according to changes in coal quality. On the other hand, due to the large number of boiler operation parameter items and their mutual influence, the number of tests is large and the trial-and-error period is long, which further aggravates the hysteresis. SUMMARY

[0005] Therefore, the present application provides a method and device for determining boiler operation parameters, a medium and a terminal, which mainly aims to improve the hysteresis problem of setting boiler operation parameters in the existing method.

[0006] According to one aspect of the present application, a method for determining boiler operation parameters is provided, comprising:

[0007] obtaining a plurality of to-be-determined boiler operation parameter items, calculating a first importance parameter and a first significance parameter of each of the to-be-determined boiler operation parameter items for boiler combustion efficiency, and calculating a second importance parameter and a second significance parameter of each of the to-be-determined boiler operation parameter items for pollutant emission concentration;

[0008] According to the plurality of first importance parameters and the plurality of first significance parameters, at least one first boiler operation parameter item for boiler combustion efficiency is selected from the plurality of to-be-determined boiler operation parameter items, and according to the plurality of second importance parameters and the plurality of second significance parameters, at least one second boiler operation parameter item for pollutant emission concentration is selected from the plurality of to-be-determined boiler operation parameter items;

[0009] integrate each of the first boiler operation parameter items and each of the second boiler operation parameter items to obtain a group of boiler operation parameter items;

[0010] build a minimum cost objective function between a boiler operation cost and the group of boiler operation parameter items, and solve the minimum cost objective function based on a preset constraint condition to generate a set value corresponding to each of the group of boiler operation parameter items.

[0011] Preferably, a plurality of to-be-determined boiler operation parameter items are obtained, and a first importance parameter and a first significance parameter of each of the to-be-determined boiler operation parameter items for a boiler combustion efficiency are calculated, including:

[0012] A plurality of to-be-determined boiler operation parameter items are obtained, and a plurality of experimental boiler operation parameter groups are generated based on a plurality of parameter levels corresponding to each of the to-be-determined boiler operation parameter items and a preset experimental design method, wherein each of the to-be-determined boiler operation parameter items and a corresponding experimental set value are included in each of the experimental boiler operation parameter groups;

[0013] The boiler operation is controlled according to the experimental set value of each of the to-be-determined boiler operation parameter items in each of the experimental boiler operation parameter groups, a plurality of experimental loss parameters and an experimental pollutant emission concentration corresponding to each of the experimental boiler operation parameter groups are obtained, and an experimental boiler combustion efficiency corresponding to each of the experimental boiler operation parameter groups is calculated according to the plurality of experimental loss parameters;

[0014] An average value of the experimental boiler combustion efficiency of each of the to-be-determined boiler operation parameter items at each of the parameter levels is calculated, and a range of the plurality of experimental boiler combustion efficiency average values is calculated to obtain a first importance parameter of each of the to-be-determined boiler operation parameter items for the boiler combustion efficiency, wherein each of the to-be-determined boiler operation parameter items corresponds to a first importance parameter;

[0015] The total average value of the experimental boiler combustion efficiency of each of the to-be-determined boiler operation parameter items is calculated;

[0016] A first deviation sum of squares between each of the experimental boiler combustion efficiency average values of each of the to-be-determined boiler operation parameter items and the total average value of the experimental boiler combustion efficiency is calculated to obtain a plurality of first inter-parameter level sum of squares, wherein each of the to-be-determined boiler operation parameter items corresponds to a first inter-parameter level sum of squares;

[0017] The number of parameter levels of each of the to-be-determined boiler operation parameter items is counted, and each of the number of parameter levels is reduced by 1 to obtain an inter-parameter level degree of freedom of each of the to-be-determined boiler operation parameter items, wherein each of the to-be-determined boiler operation parameter items corresponds to an inter-parameter level degree of freedom;

[0018] Calculate the quotient between the sum of squares between each first parameter level and the corresponding degree of freedom between parameter levels to obtain the mean square between the first parameter levels of each undetermined boiler operating parameter item;

[0019] Obtaining a first error mean square for each undetermined boiler operating parameter item, calculating a quotient between the first parameter level mean square and the corresponding first error mean square for each undetermined boiler operating parameter item, and obtaining a first significance parameter for each undetermined boiler operating parameter item with respect to boiler combustion efficiency, wherein each undetermined boiler operating parameter item corresponds to one first significance parameter;

[0020] Calculating the second importance parameter and the second significance parameter of each of the pending boiler operating parameter items with respect to the pollutant emission concentration respectively, including:

[0021] Calculate the average value of the experimental pollutant emission concentration level of each undetermined boiler operating parameter item at each parameter level, and calculate the range of multiple experimental pollutant emission concentration level average values ​​to obtain the second importance parameter of each undetermined boiler operating parameter item with respect to the experimental pollutant emission concentration, wherein each undetermined boiler operating parameter item corresponds to one second importance parameter;

[0022] Calculate the total mean value of experimental pollutant emission concentration for each undetermined boiler operating parameter item;

[0023] Calculating the second sum of squares of deviations between the average values ​​of the experimental pollutant emission concentration levels of each undetermined boiler operating parameter item and the total mean value of the experimental pollutant emission concentration, respectively, to obtain a plurality of second parameter level sums of squares, wherein each undetermined boiler operating parameter item corresponds to one second parameter level sum of squares;

[0024] Obtain the degrees of freedom between parameter levels of each undetermined boiler operating parameter item;

[0025] Calculate the quotient between the sum of squares between each second parameter level and the corresponding degree of freedom between parameter levels to obtain the mean square between the second parameter levels of each undetermined boiler operating parameter item;

[0026] Obtain the second error mean square of each pending boiler operating parameter item, calculate the quotient between the second parameter level mean square of each pending boiler operating parameter item and the corresponding second error mean square, and obtain the second significance parameter of each pending boiler operating parameter item for the experimental pollutant emission concentration, wherein each pending boiler operating parameter item corresponds to a second significance parameter.

[0027] Preferably, the selecting, based on the plurality of first importance parameters and the plurality of first significance parameters, at least one first boiler operating parameter item for boiler combustion efficiency from the plurality of pending boiler operating parameter items comprises:

[0028] arranging each of the pending boiler operation parameter items in an order from large to small according to the first importance parameters, to obtain a first influence importance sequence of the pending boiler operation parameter items on the boiler combustion efficiency;

[0029] selecting a first preset number of the pending boiler operation parameter items as preliminary selected first boiler operation parameter items according to the first influence importance sequence;

[0030] taking each of the preliminary selected first boiler operation parameter items as a target preliminary selected first boiler operation parameter item, and obtaining a corresponding first significance parameter distribution table according to a parameter level interval degree of freedom of the target preliminary selected first boiler operation parameter item and a first error degree of freedom corresponding to a first error mean square;

[0031] determining a first significance parameter critical value corresponding to the first significance parameter of the target preliminary selected first boiler operation parameter item from the first significance parameter distribution table according to a first preset significance level threshold;

[0032] obtaining a first significance test parameter corresponding to the first significance parameter;

[0033] if the first significance parameter is greater than the first significance parameter critical value and the first significance test parameter is less than the first preset significance level threshold, determining that an influence degree of the target preliminary selected first boiler operation parameter item on the boiler combustion efficiency is significant, and taking the target preliminary selected first boiler operation parameter item as a first boiler operation parameter item for the boiler combustion efficiency;

[0034] obtaining at least one first boiler operation parameter item for the boiler combustion efficiency;

[0035] screening at least one second boiler operation parameter item for a pollutant emission concentration from the pending boiler operation parameter items according to a plurality of second importance parameters and a plurality of second significance parameters, including:

[0036] arranging each of the pending boiler operation parameter items in an order from large to small according to the second importance parameters, to obtain a second influence importance sequence of the pending boiler operation parameter items on the experimental pollutant emission concentration;

[0037] selecting a second preset number of the pending boiler operation parameter items as preliminary selected second boiler operation parameter items according to the second influence importance sequence;

[0038] The target primary second boiler operation parameter item is determined according to the second preset significance level threshold and the second significance parameter corresponding to the second significance parameter distribution table.

[0039] The second significance parameter corresponding to the second significance parameter is determined according to the second preset significance level threshold and the second significance parameter corresponding to the second significance parameter distribution table.

[0040] The second significance parameter corresponding to the second significance parameter is determined according to the second preset significance level threshold and the second significance parameter corresponding to the second significance parameter distribution table.

[0041] If the second significance parameter is greater than the second significance parameter threshold and the second significance test parameter is less than the second preset significance level threshold, it is determined that the target primary second boiler operation parameter item has a significant influence on the experimental pollutant emission concentration, and the target primary second boiler operation parameter item is used as the second boiler operation parameter item for the experimental pollutant emission concentration.

[0042] At least one second boiler operation parameter item for the experimental pollutant emission concentration is obtained.

[0043] Preferably, before the minimum cost objective function between the boiler operation cost and the boiler operation parameter item group is constructed, the method further comprises:

[0044] Each boiler operation parameter item in the boiler operation parameter item group is obtained, and a plurality of boiler operation parameter groups are generated based on a plurality of parameter levels corresponding to each boiler operation parameter item and a preset experimental design method, wherein each boiler operation parameter group comprises each boiler operation parameter item and a corresponding set value.

[0045] The set value of each boiler operation parameter item in each boiler operation parameter group is used to control the boiler operation, a plurality of loss parameters and pollutant emission concentrations corresponding to each boiler operation parameter group are obtained, and the boiler combustion efficiency corresponding to each boiler operation parameter group is calculated according to the plurality of loss parameters, so as to construct the minimum cost objective function between the boiler operation cost and the boiler operation parameter item group based on the pollutant emission concentration and the boiler combustion efficiency corresponding to each boiler operation parameter group.

[0046] Preferably, the minimum cost objective function between the boiler operation cost and the boiler operation parameter item group is constructed, comprising:

[0047] According to the boiler combustion efficiency corresponding to each of the boiler operation parameter groups, calculate the fuel cost per kilowatt-hour corresponding to each of the boiler operation parameter groups;

[0048] According to the pollutant emission concentration corresponding to each of the boiler operation parameter groups, calculate the denitration cost per kilowatt-hour corresponding to each of the boiler operation parameter groups;

[0049] Calculate the sum of the fuel cost per kilowatt-hour and the denitration cost per kilowatt-hour corresponding to each of the boiler operation parameter groups, to obtain the boiler operation cost corresponding to each of the boiler operation parameter groups;

[0050] Based on each of the boiler operation parameter groups and the corresponding boiler operation cost, perform fitting processing to obtain a relationship function between the boiler operation cost and the boiler operation parameter group, and based on the relationship function, construct a minimum cost objective function between the boiler operation cost and the boiler operation parameter group.

[0051] Preferably, the to-be-determined boiler operation parameter items include at least the oxygen content at the furnace outlet, the secondary air distribution mode, the burner swing angle, the overfire air swing angle, the overfire air door opening degree, and the secondary air box pressure.

[0052] Preferably, the preset constraint condition is a pollutant emission concentration constraint condition.

[0053] According to another aspect of the present application, a boiler operation parameter determination device is provided, comprising:

[0054] An importance and significance parameter calculation module is configured to obtain a plurality of to-be-determined boiler operation parameter items, calculate a first importance parameter and a first significance parameter of each of the to-be-determined boiler operation parameter items with respect to the boiler combustion efficiency, and calculate a second importance parameter and a second significance parameter of each of the to-be-determined boiler operation parameter items with respect to the pollutant emission concentration.

[0055] A boiler operation parameter item screening module is configured to screen at least one first boiler operation parameter item with respect to the boiler combustion efficiency from the plurality of to-be-determined boiler operation parameter items according to the plurality of first importance parameters and the plurality of first significance parameters, and screen at least one second boiler operation parameter item with respect to the pollutant emission concentration from the plurality of to-be-determined boiler operation parameter items according to the plurality of second importance parameters and the plurality of second significance parameters.

[0056] A boiler operation parameter item integration module is configured to integrate each of the first boiler operation parameter items and each of the second boiler operation parameter items to obtain a boiler operation parameter group.

[0057] The boiler operation parameter generating module is configured to construct a minimum cost objective function between a boiler operation cost and the group of boiler operation parameters, and to solve the minimum cost objective function based on preset constraints to generate a set value corresponding to each boiler operation parameter in the group of boiler operation parameters.

[0058] Preferably, the importance and significance parameter calculating module is configured to:

[0059] The plurality of to-be-determined boiler operation parameters are obtained, and a plurality of experimental boiler operation parameter groups are generated based on a plurality of parameter levels corresponding to each of the to-be-determined boiler operation parameters and a preset experimental design method, wherein each of the to-be-determined boiler operation parameters and a corresponding experimental set value are included in each of the experimental boiler operation parameter groups.

[0060] The boiler is controlled according to the experimental set value of each of the to-be-determined boiler operation parameters in each of the experimental boiler operation parameter groups, and a plurality of experimental loss parameters and an experimental pollutant emission concentration corresponding to each of the experimental boiler operation parameter groups are obtained, and an experimental boiler combustion efficiency corresponding to each of the experimental boiler operation parameter groups is calculated based on the plurality of experimental loss parameters.

[0061] An average value of the experimental boiler combustion efficiency of each of the to-be-determined boiler operation parameters at each of the parameter levels is calculated, and a range of the plurality of average values of the experimental boiler combustion efficiency is calculated to obtain a first importance parameter of each of the to-be-determined boiler operation parameters with respect to the boiler combustion efficiency, wherein each of the to-be-determined boiler operation parameters corresponds to one first importance parameter.

[0062] A total average value of the experimental boiler combustion efficiency of each of the to-be-determined boiler operation parameters is calculated.

[0063] A first sum of squares of deviations between each of the average values of the experimental boiler combustion efficiency of each of the to-be-determined boiler operation parameters and the total average value of the experimental boiler combustion efficiency is calculated to obtain a plurality of first inter-parameter-level sums of squares, wherein each of the to-be-determined boiler operation parameters corresponds to one first inter-parameter-level sum of squares.

[0064] The number of parameter levels of each of the to-be-determined boiler operation parameters is counted, and each of the numbers of parameter levels is reduced by 1 to obtain an inter-parameter-level degree of freedom of each of the to-be-determined boiler operation parameters, wherein each of the to-be-determined boiler operation parameters corresponds to one inter-parameter-level degree of freedom.

[0065] A quotient between each of the first inter-parameter-level sums of squares and the corresponding inter-parameter-level degree of freedom is calculated to obtain a first inter-parameter-level mean square of each of the to-be-determined boiler operation parameters.

[0066] obtaining a first error mean square of each to-be-determined boiler operation parameter item, respectively calculating a quotient between a first parameter level mean square of each to-be-determined boiler operation parameter item and a corresponding first error mean square, to obtain a first significance parameter of each to-be-determined boiler operation parameter item with respect to the boiler combustion efficiency, wherein each to-be-determined boiler operation parameter item corresponds to a first significance parameter;

[0067] The importance and significance parameter calculation module is further configured to:

[0068] respectively calculating an experimental pollutant emission concentration average of each to-be-determined boiler operation parameter item at each parameter level, and calculating a range of the plurality of experimental pollutant emission concentration averages, to obtain a second importance parameter of each to-be-determined boiler operation parameter item with respect to the experimental pollutant emission concentration, wherein each to-be-determined boiler operation parameter item corresponds to a second importance parameter;

[0069] respectively calculating an experimental pollutant emission concentration total average of each to-be-determined boiler operation parameter item;

[0070] respectively calculating a second deviation sum of squares between the experimental pollutant emission concentration average of each to-be-determined boiler operation parameter item at each parameter level and the experimental pollutant emission concentration total average, to obtain a plurality of second parameter level sum of squares, wherein each to-be-determined boiler operation parameter item corresponds to a second parameter level sum of squares;

[0071] obtaining a parameter level degree of freedom of each to-be-determined boiler operation parameter item;

[0072] respectively calculating a quotient between each second parameter level sum of squares and a corresponding parameter level degree of freedom, to obtain a second parameter level mean square of each to-be-determined boiler operation parameter item;

[0073] obtaining a second error mean square of each to-be-determined boiler operation parameter item, respectively calculating a quotient between the second parameter level mean square of each to-be-determined boiler operation parameter item and a corresponding second error mean square, to obtain a second significance parameter of each to-be-determined boiler operation parameter item with respect to the experimental pollutant emission concentration, wherein each to-be-determined boiler operation parameter item corresponds to a second significance parameter.

[0074] Preferably, the boiler operation parameter item screening module is configured to:

[0075] arranging each to-be-determined boiler operation parameter item in a descending order according to the first importance parameter, to obtain a first influence importance sequence of the to-be-determined boiler operation parameter item with respect to the boiler combustion efficiency;

[0076] selecting a first preset number of to-be-determined boiler operation parameter items according to the first influence importance sequence, as the preliminary selected first boiler operation parameter items.

[0077] take each of the preliminary first boiler operation parameter items as a target preliminary first boiler operation parameter item, and obtain a corresponding first significance parameter distribution table according to a first error freedom degree corresponding to a first error mean square of a parameter level freedom degree of the target preliminary first boiler operation parameter item;

[0078] determine a first significance parameter critical value corresponding to the first significance parameter of the target preliminary first boiler operation parameter item from the first significance parameter distribution table according to a first preset significance level threshold;

[0079] obtain a first significance test parameter corresponding to the first significance parameter;

[0080] if the first significance parameter is greater than the first significance parameter critical value and the first significance test parameter is less than the first preset significance level threshold, determine that the target preliminary first boiler operation parameter item has a significant influence on the boiler combustion efficiency, and take the target preliminary first boiler operation parameter item as a first boiler operation parameter item for the boiler combustion efficiency;

[0081] obtain at least one first boiler operation parameter item for the boiler combustion efficiency;

[0082] The boiler operation parameter item screening module is further configured to:

[0083] arrange each of the to-be-determined boiler operation parameter items in a second influence importance sequence of the to-be-determined boiler operation parameter items on the experimental pollutant emission concentration according to a second importance parameter from large to small;

[0084] select a second preset number of to-be-determined boiler operation parameter items as preliminary second boiler operation parameter items according to the second influence importance sequence;

[0085] take each of the preliminary second boiler operation parameter items as a target preliminary second boiler operation parameter item, and obtain a corresponding second significance parameter distribution table according to a second error freedom degree corresponding to a second error mean square of a parameter level freedom degree of the target preliminary second boiler operation parameter item;

[0086] determine a second significance parameter critical value corresponding to the second significance parameter of the target preliminary second boiler operation parameter item from the second significance parameter distribution table according to a second preset significance level threshold;

[0087] obtain a second significance test parameter corresponding to the second significance parameter;

[0088] if the second significance parameter is greater than the second significance parameter threshold value and the second significance test parameter is less than the second preset significance level threshold value, determining that the target preliminary second boiler operation parameter item has a significant influence on the experimental pollutant emission concentration, and taking the target preliminary second boiler operation parameter item as a second boiler operation parameter item for the experimental pollutant emission concentration;

[0089] obtaining at least one second boiler operation parameter item for the experimental pollutant emission concentration.

[0090] Preferably, before the boiler operation parameter generation module, the device further comprises a boiler operation parameter group generation module, configured to:

[0091] obtain each boiler operation parameter item in the boiler operation parameter item group, and generate a plurality of boiler operation parameter groups based on a plurality of parameter levels corresponding to each boiler operation parameter item and a preset experimental design method, wherein each boiler operation parameter group comprises each boiler operation parameter item and a corresponding set value;

[0092] control the boiler operation according to the set value of each boiler operation parameter item in each boiler operation parameter group, obtain a plurality of loss parameters and a pollutant emission concentration corresponding to each boiler operation parameter group, and calculate a boiler combustion efficiency corresponding to each boiler operation parameter group according to the plurality of loss parameters, so as to construct a minimum cost objective function between the boiler operation cost and the boiler operation parameter item group based on the pollutant emission concentration and the boiler combustion efficiency corresponding to each boiler operation parameter group.

[0093] Preferably, the boiler operation parameter generation module is configured to:

[0094] calculate the unit electricity fuel cost corresponding to each boiler operation parameter group according to the boiler combustion efficiency corresponding to each boiler operation parameter group;

[0095] calculate the unit electricity denitration cost corresponding to each boiler operation parameter group according to the pollutant emission concentration corresponding to each boiler operation parameter group;

[0096] calculate the sum of the unit electricity fuel cost and the unit electricity denitration cost corresponding to each boiler operation parameter group, and obtain the boiler operation cost corresponding to each boiler operation parameter group;

[0097] fit the plurality of boiler operation parameter groups and the corresponding boiler operation costs to obtain a relationship function between the boiler operation cost and the boiler operation parameter group, and construct the minimum cost objective function between the boiler operation cost and the boiler operation parameter item group based on the relationship function.

[0098] Preferably, the to-be-determined boiler operation parameter items at least include oxygen content at the furnace outlet, secondary air distribution mode, burner swing angle, overfire air swing angle, overfire air door opening degree, and secondary air box pressure.

[0099] Preferably, the preset constraint condition is a pollutant emission concentration constraint condition.

[0100] According to yet another aspect of the present application, a storage medium is provided, in which at least one executable instruction is stored, which makes a processor perform operations corresponding to the above-mentioned method for determining a boiler operation parameter.

[0101] According to still another aspect of the present application, a terminal is provided, which comprises a processor, a memory, a communication interface, and a communication bus, the processor, the memory, and the communication interface being capable of communicating with each other through the communication bus.

[0102] The memory is configured to store at least one executable instruction, which makes the processor perform operations corresponding to the above-mentioned method for determining a boiler operation parameter.

[0103] By means of the above technical solutions, the technical solutions provided by the embodiments of the present application have at least the following advantages:

[0104] The application provides a boiler operation parameter determination method and device, medium and terminal. Firstly, a plurality of to-be-determined boiler operation parameter items are acquired, a first importance parameter and a first saliency parameter of each to-be-determined boiler operation parameter item for boiler combustion efficiency are calculated respectively, and a second importance parameter and a second saliency parameter of each to-be-determined boiler operation parameter item for pollutant emission concentration are calculated respectively. Secondly, at least one first boiler operation parameter item for boiler combustion efficiency is selected from the plurality of to-be-determined boiler operation parameter items according to the plurality of first importance parameters and the plurality of first saliency parameters, and at least one second boiler operation parameter item for pollutant emission concentration is selected from the plurality of to-be-determined boiler operation parameter items according to the plurality of second importance parameters and the plurality of second saliency parameters. Thirdly, the plurality of first boiler operation parameter items and the plurality of second boiler operation parameter items are integrated to obtain a boiler operation parameter item group. Finally, a minimum cost objective function between boiler operation cost and the boiler operation parameter item group is constructed, and the minimum cost objective function is solved based on a preset constraint condition to generate a set value corresponding to each boiler operation parameter item in the boiler operation parameter item group. Compared with the prior art, the embodiment of the application selects the boiler operation parameter items for boiler combustion efficiency from the plurality of to-be-determined boiler operation parameter items according to the importance parameters and the saliency parameters of each to-be-determined boiler operation parameter item for boiler combustion efficiency, selects the boiler operation parameter items for pollutant emission concentration from the plurality of to-be-determined boiler operation parameter items according to the importance parameters and the saliency parameters of each to-be-determined boiler operation parameter item for pollutant emission concentration, and then constructs the minimum cost objective function between the boiler operation cost and the selected boiler operation parameter items by using the selected boiler operation parameter items, and determines the boiler operation parameter by solving the minimum cost objective function, thereby realizing automatic setting of the boiler operation parameter, avoiding the hysteresis caused by manual response, meeting the demand of real-time adjustment of the boiler operation parameter, and significantly reducing the number of boiler operation parameters to be set, shortening the time consumption of adjustment of the boiler operation parameter, and further ensuring the real-time adjustment of the boiler operation parameter.

[0105] The above description is only a summary of the technical scheme of the application. In order to more clearly understand the technical means of the application, the application can be implemented according to the content of the description, and in order to make the above and other purposes, characteristics and advantages of the application more obvious and easy to understand, the following specific embodiments of the application are described. BRIEF DESCRIPTION OF DRAWINGS

[0106] Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments with reference made to the accompanying drawings. The drawings provided herein are for illustrative purposes only and, therefore, should not be considered to be limiting in any way. Furthermore, like reference numerals are intended to refer to like and corresponding portions of the application. In the drawings:

[0107] Figure 1 A flow chart of a method for determining a boiler operating parameter is shown according to an embodiment of the present application;

[0108] Figure 2 A flow chart of another method for determining a boiler operating parameter is shown according to an embodiment of the present application;

[0109] Figure 3 A block diagram of a device for determining a boiler operating parameter is shown according to an embodiment of the present application;

[0110] Figure 4 A structure diagram of a terminal is shown according to an embodiment of the present application. DETAILED DESCRIPTION

[0111] Example embodiments of the present disclosure will be described herein below with reference to the accompanying drawings. While example embodiments of the present disclosure are illustrated, it is to be understood that the present disclosure is not limited to the illustrated embodiments. Rather, the present disclosure is intended to encompass various modifications and alternative forms. In particular, the present disclosure is intended to cover all equivalents and alternatives falling within the scope of the present disclosure. Thus, the present disclosure should not be limited by the embodiments set forth hereinbelow.

[0112] The following description of at least one example embodiment is merely illustrative in nature and is in no way intended to limit the application or its application or uses.

[0113] Techniques, methods, and apparatus known to those of ordinary skill in the relevant art can not be discussed in detail herein. However, where appropriate, such techniques, methods, and apparatus can be considered as being implied by the description herein.

[0114] It is to be understood that the same or similar reference numerals and letters refer to parts that perform the same or similar functions. Therefore, once one part is defined in one drawing, it is not necessary to discuss it further in subsequent drawings.

[0115] The embodiments of the present application can be applied to a computer system / server, which can operate with many other general-purpose or special-purpose computing system environments or configurations. Examples of well-known computing systems, environments, and / or configurations that are suitable for use with the computer system / server include, but are not limited to, personal computer systems, server computer systems, thin clients, thick clients, handheld or laptop devices, microprocessor-based systems, set-top boxes, programmable consumer electronics, network personal computers, minicomputer systems, mainframe computer systems, and distributed cloud computing environments that include any of the above systems, and the like.

[0116] The embodiments of the present application provide a method for determining a boiler operating parameter, as shown in the following Figure 1 The method comprises the following steps.

[0117] 101, obtaining a plurality of to-be-determined boiler operating parameter items, calculating a first importance parameter and a first significance parameter of each to-be-determined boiler operating parameter item for boiler combustion efficiency, and calculating a second importance parameter and a second significance parameter of each to-be-determined boiler operating parameter item for pollutant emission concentration.

[0118] The to-be-determined boiler operating parameter item is used to represent factors that may affect the boiler combustion efficiency and the pollutant emission concentration, and at least includes the oxygen content at the furnace outlet, the secondary air distribution mode, the burner swing angle, the overfire air swing angle, the overfire air door opening degree, and the secondary air box pressure; the first importance parameter is used to quantify the influence importance degree of the boiler operating parameter item for the boiler combustion efficiency; the first significance parameter is used to test the influence significance of the boiler operating parameter item on the boiler combustion efficiency; the second importance parameter is used to quantify the influence importance degree of the boiler operating parameter item for the pollutant emission concentration; the second significance parameter is used to test the influence significance of the boiler operating parameter item on the pollutant emission concentration; and the pollutant emission concentration can be the SCR denitration inlet nitride concentration. In the embodiments of the present application, the current execution end can be a boiler operating parameter control module.

[0119] 102, screening at least one first boiler operating parameter item for the boiler combustion efficiency from the plurality of to-be-determined boiler operating parameter items according to the plurality of first importance parameters and the plurality of first significance parameters, and screening at least one second boiler operating parameter item for the pollutant emission concentration from the plurality of to-be-determined boiler operating parameter items according to the plurality of second importance parameters and the plurality of second significance parameters.

[0120] The first boiler operating parameter item is used to represent factors that have a significant influence on the boiler combustion efficiency; and the second boiler operating parameter item is used to represent factors that have a significant influence on the pollutant emission concentration.

[0121] It should be noted that based on the embodiment step 101, each pending boiler operation parameter item corresponds to a first importance parameter, a first significance parameter, a second importance parameter and a second significance parameter. In the embodiment of the present application, a plurality of pending boiler operation parameter items with greater first importance parameters are first preliminarily screened as preliminary first boiler operation parameter items, and then the significance of the influence of each preliminary first boiler operation parameter item is verified according to the first significance parameter of the preliminary first boiler operation parameter item, so as to screen at least one first boiler operation parameter item for the boiler combustion efficiency. Similarly, based on the second importance parameter and the second significance parameter, at least one second boiler operation parameter item for the pollutant emission concentration is screened.

[0122] 103. Integrate each first boiler operation parameter item and each second boiler operation parameter item to obtain a boiler operation parameter item group.

[0123] In the embodiment of the present application, the first boiler operation parameter item and the second boiler operation parameter item are integrated to obtain the boiler operation parameter item group, without the need for distinction.

[0124] 104. Construct a minimum cost objective function between the boiler operation cost and the boiler operation parameter item group, and solve the minimum cost objective function based on a preset constraint condition to generate a set value corresponding to each boiler operation parameter item in the boiler operation parameter item group.

[0125] The boiler operation cost can include a combustion cost and an environmental protection cost, etc. The preset constraint condition can include a combustion efficiency constraint, an environmental protection constraint, etc. The minimum cost objective function can be constructed based on a relationship function between the boiler operation cost and the boiler operation parameter item group. The set value corresponding to the boiler operation parameter item, for example, the furnace outlet oxygen amount is set to 4.6%, 4.7%, etc.

[0126] Compared with the prior art, the embodiment of the application filters the boiler operation parameter items for the boiler combustion efficiency from the plurality of pending boiler operation parameter items according to the importance parameter and the significance parameter of each pending boiler operation parameter item for the boiler combustion efficiency, filters the boiler operation parameter items for the pollutant emission concentration from the plurality of pending boiler operation parameter items according to the importance parameter and the significance parameter of each pending boiler operation parameter item for the pollutant emission concentration, and then constructs the minimum cost objective function between the boiler operation cost and the filtered boiler operation parameter items based on the filtered boiler operation parameter items, and determines the boiler operation parameter by solving the minimum cost objective function, so as to realize automatic setting of the boiler operation parameter, avoid the hysteresis caused by manual response, meet the demand of real-time adjustment of the boiler operation parameter, and at the same time, filter the more important and significant boiler operation parameter items for the boiler combustion efficiency and the pollutant emission concentration, significantly reduce the number of boiler operation parameters that need to be set, shorten the time consumption of adjustment of the boiler operation parameter, and further ensure the real-time adjustment of the boiler operation parameter.

[0127] In one embodiment of the application, in order to further limit and illustrate, as shown in Figure 2 step 101

[0128] The embodiment of the application provides another method for determining a boiler operation parameter, as shown in Figure 2 the method comprises the following steps.

[0129] 201, a plurality of pending boiler operation parameter items are obtained, and a plurality of experimental boiler operation parameter groups are generated based on a plurality of parameter levels corresponding to each pending boiler operation parameter item and a preset experimental design method.

[0130] In the experimental boiler operation parameter group, each pending boiler operation parameter item and a corresponding experimental set value are included. The parameter level can be determined from the available value range of the boiler operation parameter item. For example, the available value range of the furnace outlet oxygen content is 3% to 4%, so the parameter level of the furnace outlet oxygen content can be 3%, 3.5%, 4%, etc. More fine parameter levels can also be used. The preset experimental design method can be CCD central composite design, Box-Benhnken (BBD) experimental design, etc.

[0131] For example, the pending boiler operation parameter items include six categories of furnace outlet oxygen content, secondary air distribution mode, burner swing angle, overfire air swing angle, overfire air door opening degree, and secondary air box pressure. The corresponding parameter level table is shown in Table 1.

[0132] Table 1 Parameter level table of pending boiler operation parameter items

[0133] Boiler operating parameter item name Unit Minimum parameter level Maximum parameter level Oxygen content at furnace exit ％ 3 4 Secondary air distribution mode / -1 1 Swing angle of burner ％ -10 10 Swing angle of overfire air ％ -10 10 Opening of overfire air damper ％ 0 45 Secondary air box pressure Kpa 0.8 1.2

[0134] It is understandable that each major category may also include some subcategories. Based on this, based on the parameter level table of the above-mentioned undetermined boiler operating parameter items and the preset experimental design method, multiple experimental boiler operating parameter groups are generated, as shown in Table 2.

[0135] Table 2 Experimental boiler operating parameter group list

[0136]

[0137]

[0138] In the table, the name column represents the pending boiler operating parameter items, including the above six categories of pending boiler operating parameter items and their subordinate subcategories. Working conditions 1 to working conditions 5 represent 5 groups of experimental boiler operating parameter groups, which contain each pending boiler operating parameter item and the corresponding experimental setting value.

[0139] 202. Control the boiler operation according to the experimental set values ​​of each undetermined boiler operating parameter item in each experimental boiler operating parameter group, obtain multiple experimental loss parameters and experimental pollutant emission concentrations corresponding to each experimental boiler operating parameter group, and calculate the experimental boiler combustion efficiency corresponding to each experimental boiler operating parameter group based on the multiple experimental loss parameters.

[0140] Continuing with the example in step 201 of the embodiment, the boiler operation is controlled according to operating conditions 1 to 5 in Table 2, and multiple experimental loss parameters corresponding to each operating condition are obtained. Based on the multiple experimental loss parameters, the experimental boiler combustion efficiency corresponding to each operating condition is calculated. The experimental pollutant emission concentration corresponding to each operating condition can be directly obtained, as shown in Table 3.

[0141] Table 3 Experimental results

[0142]

[0143] In the table, denitrification inlet NO x It represents the experimental pollutant emission concentration, and the corrected thermal efficiency represents the experimental boiler combustion efficiency, which can be calculated according to the existing method and will not be described here.

[0144] It should be noted that the experimental pollutant emission concentration can be read based on the exhaust gas nitrogen compound measurement point sensor on the boiler. Preferably, the degree of each sensor can be calibrated in advance using a flue gas analyzer to ensure the accuracy of subsequent readings.

[0145] 203. Calculate the first importance parameter of each pending boiler operating parameter item for boiler combustion efficiency, and calculate the second importance parameter of each pending boiler operating parameter item for pollutant emission concentration.

[0146] Correspondingly, in step 203 of the embodiment, the first importance parameter of each pending boiler operating parameter item with respect to boiler combustion efficiency is calculated respectively, specifically including: calculating the average value of the experimental boiler combustion efficiency level of each pending boiler operating parameter item at each parameter level, and calculating the range of the average values ​​of multiple experimental boiler combustion efficiency levels, to obtain the first importance parameter of each pending boiler operating parameter item with respect to boiler combustion efficiency, wherein each pending boiler operating parameter item corresponds to one first importance parameter.

[0147] For example, taking the oxygen content at the furnace outlet (operating oxygen content) in working conditions 1 to 5 as an example, it can be seen from Table 2 that the oxygen content at the furnace outlet of working condition 1 is 4.60, the oxygen content at the furnace outlet of working condition 2 is 4.70, the oxygen content at the furnace outlet of working condition 3 is 4.71, the oxygen content at the furnace outlet of working condition 4 is 4.57, and the oxygen content at the furnace outlet of working condition 5 is 4.44. Assuming that working conditions 4 and 5 are low parameter levels, working condition 1 is medium parameter level, and working conditions 2 and 3 are high parameter levels, then first calculate the average value of the experimental boiler combustion efficiency level at each parameter level, that is, the experimental boiler combustion efficiency level at the low parameter level. The average value is (94.46+94.49) / 2=94.475. Similarly, the average value of the experimental boiler combustion efficiency level at the medium parameter level is 94.43, and the average value of the experimental boiler combustion efficiency level at the high parameter level is (94.44+94.35) / 2=94.395. Further, the range of the average values ​​of the combustion efficiency levels of the three experimental boilers is calculated, that is, 94.475-94.395=0.08, which is the first important parameter of the furnace outlet oxygen amount for the boiler combustion efficiency. Similarly, the first important parameter corresponding to each undetermined boiler operating parameter item is calculated, which will not be repeated here.

[0148] Similarly, in step 203 of the embodiment, the second importance parameters of each pending boiler operating parameter item for the pollutant emission concentration are calculated respectively, specifically including: calculating the average value of the experimental pollutant emission concentration level of each pending boiler operating parameter item at each parameter level, and calculating the range of multiple average values ​​of the experimental pollutant emission concentration levels, to obtain the second importance parameters of each pending boiler operating parameter item for the experimental pollutant emission concentration, wherein each pending boiler operating parameter item corresponds to a second importance parameter.

[0149] It can be understood that the calculation process of the second importance parameter is the same as that of the first importance parameter, and the boiler combustion efficiency can be replaced by the experimental pollutant emission concentration, which will not be repeated here.

[0150] 204. calculate a first significance parameter of each of the pending boiler operation parameter items for the boiler combustion efficiency, and calculate a second significance parameter of each of the pending boiler operation parameter items for the pollutant emission concentration, respectively.

[0151] Correspondingly, the step 204 of calculating a first significance parameter of each of the pending boiler operation parameter items for the boiler combustion efficiency, specifically includes: calculating a total average of experimental boiler combustion efficiencies of each of the pending boiler operation parameter items; calculating a first deviation sum of square between each of the experimental boiler combustion efficiency average and the total average of experimental boiler combustion efficiencies of each of the pending boiler operation parameter items, to obtain a plurality of first parameter level sum of squares, wherein each of the pending boiler operation parameter items corresponds to a first parameter level sum of square; counting the number of parameter levels of each of the pending boiler operation parameter items, and reducing 1 from each of the number of parameter levels to obtain the inter-parameter level degrees of freedom of each of the pending boiler operation parameter items, wherein each of the pending boiler operation parameter items corresponds to an inter-parameter level degree of freedom; calculating a quotient between each of the first parameter level sum of square and the corresponding inter-parameter level degree of freedom, to obtain a first inter-parameter level mean square of each of the pending boiler operation parameter items; obtaining a first error mean square of each of the pending boiler operation parameter items, and calculating a quotient between the first inter-parameter level mean square of each of the pending boiler operation parameter items and the corresponding first error mean square, to obtain a first significance parameter of each of the pending boiler operation parameter items for the boiler combustion efficiency, wherein each of the pending boiler operation parameter items corresponds to a first significance parameter.

[0152] Continuing the above example of the furnace outlet oxygen amount, first, the total average of experimental boiler combustion efficiencies of the 5 working conditions is calculated, i.e. (94.43+94.44+94.35+94.46+94.49) / 5=94.434, and then the first deviation sum of square between each of the experimental boiler combustion efficiency average and the total average of experimental boiler combustion efficiencies is calculated, i.e. (94.475-94.434) 2 +(94.43-94.434) 2 +(94.395-94.434) 2 Similarly, the first parameter level sum of square corresponding to each of the pending boiler operation parameter items is calculated, which is not described herein again; further, the number of parameter levels of the furnace outlet oxygen amount is counted as 3, and the inter-parameter level degree of freedom of the furnace outlet oxygen amount is determined as 2, and similarly, the inter-parameter level degree of freedom corresponding to each of the pending boiler operation parameter items is determined; further, the above first deviation sum of square (94.475-94.434) 2 +(94.43-94.434) 2 +(94.395-94.434)2 The quotient between the second parameter inter-level sum of squares and the corresponding parameter inter-level degree of freedom 2 is obtained, and the first parameter inter-level mean square of the furnace outlet oxygen content is obtained; further, the first error mean square of the furnace outlet oxygen content can be obtained based on statistical software, and the quotient between the first parameter inter-level mean square and the first error mean square is calculated, and the first significance parameter of the furnace outlet oxygen content with respect to the boiler combustion efficiency is obtained, and the first significance parameter corresponding to each to-be-determined boiler operation parameter item is calculated in the same way.

[0153] Similarly, the second significance parameter of each to-be-determined boiler operation parameter item with respect to the pollutant emission concentration is calculated in step 204 of the embodiment, specifically including: the total average of the experimental pollutant emission concentration of each to-be-determined boiler operation parameter item is calculated; the second deviation sum of squares between each experimental pollutant emission concentration average of each to-be-determined boiler operation parameter item and the total average of the experimental pollutant emission concentration is calculated, and a plurality of second parameter inter-level sum of squares is obtained, wherein each to-be-determined boiler operation parameter item corresponds to a second parameter inter-level sum of squares; the parameter inter-level degree of freedom of each to-be-determined boiler operation parameter item is obtained; the quotient between each second parameter inter-level sum of squares and the corresponding parameter inter-level degree of freedom is calculated, and the second parameter inter-level mean square of each to-be-determined boiler operation parameter item is obtained; the second error mean square of each to-be-determined boiler operation parameter item is obtained, and the quotient between the second parameter inter-level mean square of each to-be-determined boiler operation parameter item and the corresponding second error mean square is calculated, and the second significance parameter of each to-be-determined boiler operation parameter item with respect to the experimental pollutant emission concentration is obtained, wherein each to-be-determined boiler operation parameter item corresponds to a second significance parameter.

[0154] It can be understood that the calculation process of the second significance parameter is the same as that of the first significance parameter, and the boiler combustion efficiency is replaced by the experimental pollutant emission concentration, which will not be repeated here.

[0155] 205、According to the plurality of first importance parameters and the plurality of first significance parameters, at least one first boiler operation parameter item with respect to the boiler combustion efficiency is screened from the plurality of to-be-determined boiler operation parameter items, and according to the plurality of second importance parameters and the plurality of second significance parameters, at least one second boiler operation parameter item with respect to the pollutant emission concentration is screened from the plurality of to-be-determined boiler operation parameter items.

[0156] Correspondingly, the embodiment step 205 screens at least one first boiler operation parameter item for the boiler combustion efficiency from the plurality of pending boiler operation parameter items according to the plurality of first importance parameters and the plurality of first significance parameters, specifically comprising: arranging each pending boiler operation parameter item in the order of the first importance parameters from large to small to obtain a first influence importance sequence of the pending boiler operation parameter items on the boiler combustion efficiency; selecting a first preset number of the pending boiler operation parameter items as the preliminary selected first boiler operation parameter items according to the first influence importance sequence; taking each preliminary selected first boiler operation parameter item as a target preliminary selected first boiler operation parameter item one by one, and obtaining a corresponding first significance parameter distribution table according to the parameter level interval freedom of the target preliminary selected first boiler operation parameter item and the first error freedom corresponding to the first error mean square; determining a first significance parameter critical value corresponding to the first significance parameter of the target preliminary selected first boiler operation parameter item from the first significance parameter distribution table according to the first preset significance level threshold; obtaining a first significance test parameter corresponding to the first significance parameter; if the first significance parameter is greater than the first significance parameter critical value and the first significance test parameter is less than the first preset significance level threshold, determining that the influence degree of the target preliminary selected first boiler operation parameter item on the boiler combustion efficiency is significant influence, and taking the target preliminary selected first boiler operation parameter item as the first boiler operation parameter item for the boiler combustion efficiency; obtaining at least one first boiler operation parameter item for the boiler combustion efficiency.

[0157] For example, assuming that the first importance coefficient of the furnace outlet oxygen content is 0.08, the first importance coefficient of the secondary air distribution mode is 0.04, the first importance coefficient of the burner swing angle is 0.02, the first importance coefficient of the overfire air swing angle is 0.01, the first importance coefficient of the overfire air damper opening is 0.006, and the first importance coefficient of the secondary air box pressure is 0.005, first, according to the order of the first importance parameters from large to small, the various to-be-determined boiler operation parameter items are arranged to obtain the first influence importance sequence of the to-be-determined boiler operation parameter items on the boiler combustion efficiency, i.e., the furnace outlet oxygen content (0.08) > the secondary air distribution mode (0.04) > the burner swing angle (0.02) > the overfire air swing angle (0.01) > the overfire air damper opening (0.006) > the secondary air box pressure (0.005); further, the first preset number (assuming 3) of to-be-determined boiler operation parameter items are selected as the preliminary selected first boiler operation parameter items, i.e., the furnace outlet oxygen content, the secondary air distribution mode, and the burner swing angle; further, for each preliminary selected first boiler operation parameter item, taking the furnace outlet oxygen content as an example, according to the parameter level interval freedom degree 2 of the furnace outlet oxygen content and the first error freedom degree (assuming 12) corresponding to the first error mean square, the corresponding first significance parameter distribution table is obtained; further, according to the first preset significance level threshold (which can be 0.05), the first significance parameter critical value (assuming 3.89) corresponding to the first significance parameter of the furnace outlet oxygen content is determined from the first significance parameter distribution table; further, the first significance test parameter (assuming 0.0042, which is used to quantify the reliability of the significance conclusion) corresponding to the first significance parameter can be obtained based on the statistical software; further, since the first significance parameter (assuming 8.42) > the first significance parameter critical value 3.89, and the first significance test parameter 0.0042 is less than the first preset significance level threshold 0.05, it is indicated that the significance conclusion is a significant influence, and the conclusion is reliable, at this time, it can be determined that the influence of the furnace outlet oxygen content on the boiler combustion efficiency is a significant influence, and the furnace outlet oxygen content is taken as the first boiler operation parameter item for the boiler combustion efficiency, and the significance of each preliminary selected first boiler operation parameter item is verified by analogy to obtain the first boiler operation parameter item for the boiler combustion efficiency.

[0158] Similarly, the embodiment step 205 screens at least one second boiler operation parameter item for the pollutant emission concentration from the plurality of pending boiler operation parameter items according to the plurality of second importance parameters and the plurality of second significance parameters, specifically comprising: arranging each pending boiler operation parameter item in the order of the second importance parameters from large to small to obtain a second influence importance sequence of the pending boiler operation parameter items on the experimental pollutant emission concentration; selecting a second preset number of pending boiler operation parameter items as preliminary second boiler operation parameter items according to the second influence importance sequence; taking each preliminary second boiler operation parameter item as a target preliminary second boiler operation parameter item one by one, and obtaining a corresponding second significance parameter distribution table according to the parameter level interval freedom of the target preliminary second boiler operation parameter item and the second error freedom corresponding to the second error mean square; determining a second significance parameter critical value corresponding to the second significance parameter of the target preliminary second boiler operation parameter item from the second significance parameter distribution table according to the second preset significance level threshold; obtaining a second significance test parameter corresponding to the second significance parameter; if the second significance parameter is greater than the second significance parameter critical value and the second significance test parameter is less than the second preset significance level threshold, it is determined that the target preliminary second boiler operation parameter item has a significant influence on the experimental pollutant emission concentration, and the target preliminary second boiler operation parameter item is taken as a second boiler operation parameter item for the experimental pollutant emission concentration; and at least one second boiler operation parameter item for the experimental pollutant emission concentration is obtained.

[0159] It can be understood that the screening process of the second boiler operation parameter item is the same as that of the first boiler operation parameter item, and the boiler combustion efficiency is replaced by the experimental pollutant emission concentration, which will not be repeated here.

[0160] 206, integrate each first boiler operation parameter item and each second boiler operation parameter item to obtain a boiler operation parameter item group; obtain each boiler operation parameter item in the boiler operation parameter item group, and generate a plurality of boiler operation parameter groups based on a plurality of parameter levels corresponding to each boiler operation parameter item and a preset experimental design method.

[0161] Among them, the boiler operation parameter group contains each of the boiler operation parameter items and the corresponding set value.

[0162] 207, respectively according to the set value of each boiler operation parameter item in each boiler operation parameter group, control the boiler operation, obtain a plurality of loss parameters and pollutant emission concentrations corresponding to each boiler operation parameter group, and calculate the boiler combustion efficiency corresponding to each boiler operation parameter group according to the plurality of loss parameters.

[0163] The minimum cost objective function between the boiler operation cost and the boiler operation parameter item group is constructed based on the pollutant emission concentration corresponding to each boiler operation parameter group and the boiler combustion efficiency.

[0164] The embodiment steps 206-207 can refer to the detailed description in the foregoing embodiment steps 103, 201, 202, which will not be repeated here.

[0165] 208, constructing a minimum cost objective function between the boiler operation cost and the boiler operation parameter item group.

[0166] Correspondingly, the embodiment step 208 specifically includes: calculating the fuel cost per kilowatt-hour corresponding to each boiler operation parameter group according to the boiler combustion efficiency corresponding to each boiler operation parameter group; calculating the denitration cost per kilowatt-hour corresponding to each boiler operation parameter group according to the pollutant emission concentration corresponding to each boiler operation parameter group; calculating the sum of the fuel cost per kilowatt-hour and the denitration cost per kilowatt-hour corresponding to each boiler operation parameter group to obtain the boiler operation cost corresponding to each boiler operation parameter group; fitting the relationship function between the boiler operation cost and the boiler operation parameter group based on each boiler operation parameter group and the corresponding boiler operation cost, and constructing the minimum cost objective function between the boiler operation cost and the boiler operation parameter item group based on the relationship function.

[0167] Wherein, the fuel cost per kilowatt-hour is used to represent the cost of fuel required to produce 1 kilowatt-hour, for example, assuming that the boiler efficiency is 90% (obtained in embodiment step 207), the turbine efficiency is 40% (fixed parameter), the generator efficiency is 97% (fixed parameter), and the pipeline efficiency is 99% (fixed parameter), then the plant efficiency = 0.90 x 0.40 x 0.97 x 0.99 = 34.6%, assuming that standard coal (heat value 29307 kJ / kg) is used as fuel,

[0168] That is, the coal consumption for power generation = 0.1228 / 0.346 = 0.355 kg / kWh, assuming that the coal price is 800 yuan / ton (i.e. 0.8 yuan / kg), then the fuel cost per kilowatt-hour = 0.355 kg / kWh x 0.8 yuan / kg = 0.284 yuan / kWh; further, the denitration cost per kilowatt-hour is used to represent the denitration purification cost of pollutants generated by 1 kilowatt-hour, specifically, the theoretical liquid ammonia amount = inlet NO x concentration (standard state, dry basis, 6% O2) x flue gas amount (standard state, dry basis, 6% O2) x ammonia nitrogen molar ratio (including denitration efficiency and ammonia escape rate), unit time unit NO x The liquid ammonia consumption for removal = total liquid ammonia amount in a period of time / ((inlet NO x concentration - outlet NO xThe denitration cost per kilowatt-hour is calculated by taking the product of the ammonia consumption, the total flue gas volume, the price of liquid ammonia (0.3 million yuan per ton), the urea consumption, the dust (soot, etc.) pollution equivalent price (1.8 yuan per pollution equivalent), and the pollution equivalent (2.18 kg). The sum of the fuel cost per kilowatt-hour and the denitration cost per kilowatt-hour is taken as the boiler operation cost, and the boiler operation cost corresponding to each boiler operation parameter group is obtained. The relationship function between the boiler operation cost and the boiler operation parameter group is obtained by taking the boiler operation parameter group as the independent variable and the boiler operation cost as the dependent variable. Based on the relationship function, the minimum cost objective function between the boiler operation cost and the boiler operation parameter group is constructed.

[0169] 209、Based on the preset constraint condition, the minimum cost objective function is solved to generate the set value corresponding to each boiler operation parameter item in the boiler operation parameter item group.

[0170] The preset constraint condition is a pollutant emission concentration constraint condition, that is, the SCR denitration inlet nitride concentration design value.

[0171] The application provides a method for determining boiler operation parameters. Firstly, a plurality of to-be-determined boiler operation parameter items are acquired, a first importance parameter and a first saliency parameter of each of the to-be-determined boiler operation parameter items for boiler combustion efficiency are calculated, and a second importance parameter and a second saliency parameter of each of the to-be-determined boiler operation parameter items for pollutant emission concentration are calculated. Secondly, at least one first boiler operation parameter item for boiler combustion efficiency is selected from the plurality of to-be-determined boiler operation parameter items according to the plurality of first importance parameters and the plurality of first saliency parameters, and at least one second boiler operation parameter item for pollutant emission concentration is selected from the plurality of to-be-determined boiler operation parameter items according to the plurality of second importance parameters and the plurality of second saliency parameters. Thirdly, the plurality of first boiler operation parameter items and the plurality of second boiler operation parameter items are integrated to obtain a boiler operation parameter item group. Finally, a minimum cost objective function between boiler operation cost and the boiler operation parameter item group is constructed, and a set value corresponding to each of the boiler operation parameter items in the boiler operation parameter item group is generated by solving the minimum cost objective function based on a preset constraint condition. Compared with the prior art, the embodiment of the application selects the boiler operation parameter items for boiler combustion efficiency from the plurality of to-be-determined boiler operation parameter items according to the importance parameters and the saliency parameters of each of the to-be-determined boiler operation parameter items for boiler combustion efficiency, selects the boiler operation parameter items for pollutant emission concentration from the plurality of to-be-determined boiler operation parameter items according to the importance parameters and the saliency parameters of each of the to-be-determined boiler operation parameter items for pollutant emission concentration, and then constructs the minimum cost objective function between the boiler operation cost and the selected boiler operation parameter items by using the selected boiler operation parameter items, and determines the boiler operation parameters by solving the minimum cost objective function, thereby realizing automatic setting of the boiler operation parameters, avoiding the hysteresis caused by manual response, meeting the demand for real-time adjustment of the boiler operation parameters, and significantly reducing the number of boiler operation parameters to be set, shortening the time consumption for adjustment of the boiler operation parameters, and further ensuring the real-time adjustment of the boiler operation parameters.

[0172] Further, as an implementation of the above-mentioned Figure 1 method, the embodiment of the application provides a device for determining boiler operation parameters, as shown in the figure, which comprises: Figure 3

[0173] an importance and saliency parameter calculation module 31, a boiler operation parameter item selection module 32, a boiler operation parameter item integration module 33, and a boiler operation parameter generation module 34.

[0174] ​The importance and significance parameter calculation module 31 is configured to obtain a plurality of pending boiler operation parameter items, calculate a first importance parameter and a first significance parameter of each of the pending boiler operation parameter items for boiler combustion efficiency, and calculate a second importance parameter and a second significance parameter of each of the pending boiler operation parameter items for pollutant emission concentration.

[0175] The boiler operation parameter item screening module 32 is configured to screen at least one first boiler operation parameter item for boiler combustion efficiency from the plurality of pending boiler operation parameter items according to the plurality of first importance parameters and the plurality of first significance parameters, and screen at least one second boiler operation parameter item for pollutant emission concentration from the plurality of pending boiler operation parameter items according to the plurality of second importance parameters and the plurality of second significance parameters.

[0176] The boiler operation parameter item integration module 33 is configured to integrate each of the first boiler operation parameter items and each of the second boiler operation parameter items to obtain a boiler operation parameter item group.

[0177] The boiler operation parameter generation module 34 is configured to construct a minimum cost objective function between boiler operation cost and the boiler operation parameter item group, and solve the minimum cost objective function based on a preset constraint condition to generate a set value corresponding to each of the boiler operation parameter items in the boiler operation parameter item group.

[0178] In a specific application scenario, the importance and significance parameter calculation module is configured to:

[0179] obtain a plurality of pending boiler operation parameter items, generate a plurality of experimental boiler operation parameter groups based on a plurality of parameter levels corresponding to each of the pending boiler operation parameter items and a preset experimental design method, wherein each of the experimental boiler operation parameter groups comprises each of the pending boiler operation parameter items and a corresponding experimental set value;

[0180] control boiler operation according to the experimental set value of each of the pending boiler operation parameter items in each of the experimental boiler operation parameter groups, obtain a plurality of experimental loss parameters and an experimental pollutant emission concentration corresponding to each of the experimental boiler operation parameter groups, and calculate an experimental boiler combustion efficiency corresponding to each of the experimental boiler operation parameter groups according to the plurality of experimental loss parameters;

[0181] calculate an average value of the experimental boiler combustion efficiency of each of the pending boiler operation parameter items at each of the parameter levels, calculate a range of the plurality of average values of the experimental boiler combustion efficiency, and obtain a first importance parameter of each of the pending boiler operation parameter items for the boiler combustion efficiency, wherein each of the pending boiler operation parameter items corresponds to a first importance parameter.

[0182] respectively, and calculate a range of the plurality of experimental boiler combustion efficiency average values to obtain a second importance parameter of each of the to-be-determined boiler operation parameter items with respect to experimental pollutant emission concentration, wherein each of the to-be-determined boiler operation parameter items corresponds to a second importance parameter;

[0183] respectively, and calculate a range of the plurality of experimental boiler combustion efficiency average values to obtain a second importance parameter of each of the to-be-determined boiler operation parameter items with respect to experimental pollutant emission concentration, wherein each of the to-be-determined boiler operation parameter items corresponds to a second importance parameter;

[0184] respectively, and calculate a range of the plurality of experimental boiler combustion efficiency average values to obtain a second importance parameter of each of the to-be-determined boiler operation parameter items with respect to experimental pollutant emission concentration, wherein each of the to-be-determined boiler operation parameter items corresponds to a second importance parameter;

[0185] respectively, and calculate a range of the plurality of experimental boiler combustion efficiency average values to obtain a second importance parameter of each of the to-be-determined boiler operation parameter items with respect to experimental pollutant emission concentration, wherein each of the to-be-determined boiler operation parameter items corresponds to a second importance parameter;

[0186] respectively, and calculate a range of the plurality of experimental boiler combustion efficiency average values to obtain a second importance parameter of each of the to-be-determined boiler operation parameter items with respect to experimental pollutant emission concentration, wherein each of the to-be-determined boiler operation parameter items corresponds to a second importance parameter;

[0187] The importance and significance parameter calculation module is further configured to:

[0188] respectively, and calculate a range of the plurality of experimental boiler combustion efficiency average values to obtain a second importance parameter of each of the to-be-determined boiler operation parameter items with respect to experimental pollutant emission concentration, wherein each of the to-be-determined boiler operation parameter items corresponds to a second importance parameter;

[0189] respectively, and calculate a range of the plurality of experimental boiler combustion efficiency average values to obtain a second importance parameter of each of the to-be-determined boiler operation parameter items with respect to experimental pollutant emission concentration, wherein each of the to-be-determined boiler operation parameter items corresponds to a second importance parameter;

[0190] respectively, and calculate a range of the plurality of experimental boiler combustion efficiency average values to obtain a second importance parameter of each of the to-be-determined boiler operation parameter items with respect to experimental pollutant emission concentration, wherein each of the to-be-determined boiler operation parameter items corresponds to a second importance parameter;

[0191] respectively, and calculate a range of the plurality of experimental boiler combustion efficiency average values to obtain a second importance parameter of each of the to-be-determined boiler operation parameter items with respect to experimental pollutant emission concentration, wherein each of the to-be-determined boiler operation parameter items corresponds to a second importance parameter;

[0192] The quotient between the second parameter level mean square of each to-be-determined boiler operation parameter item and the corresponding parameter level degree of freedom is calculated to obtain the second parameter level mean square of each to-be-determined boiler operation parameter item;

[0193] The second error mean square of each to-be-determined boiler operation parameter item is obtained, and the quotient between the second parameter level mean square of each to-be-determined boiler operation parameter item and the corresponding second error mean square is calculated to obtain the second significance parameter of each to-be-determined boiler operation parameter item with respect to the experimental pollutant emission concentration, wherein each to-be-determined boiler operation parameter item corresponds to a second significance parameter.

[0194] In a specific application scenario, the boiler operation parameter item screening module is configured to:

[0195] The to-be-determined boiler operation parameter items are arranged in descending order of the first importance parameter to obtain a first influence importance sequence of the to-be-determined boiler operation parameter items on the boiler combustion efficiency.

[0196] According to the first influence importance sequence, a first preset number of to-be-determined boiler operation parameter items are selected as preliminary selected first boiler operation parameter items.

[0197] Each of the preliminary selected first boiler operation parameter items is taken as a target preliminary selected first boiler operation parameter item, and a corresponding first significance parameter distribution table is obtained according to the parameter level degree of freedom of the target preliminary selected first boiler operation parameter item and the first error degree of freedom corresponding to the first error mean square.

[0198] According to a first preset significance level threshold, a first significance parameter critical value corresponding to the first significance parameter of the target preliminary selected first boiler operation parameter item is determined from the first significance parameter distribution table.

[0199] The first significance test parameter corresponding to the first significance parameter is obtained.

[0200] If the first significance parameter is greater than the first significance parameter critical value and the first significance test parameter is less than the first preset significance level threshold, it is determined that the target preliminary selected first boiler operation parameter item has a significant influence on the boiler combustion efficiency, and the target preliminary selected first boiler operation parameter item is taken as a first boiler operation parameter item for the boiler combustion efficiency.

[0201] At least one first boiler operation parameter item for the boiler combustion efficiency is obtained.

[0202] The boiler operation parameter item screening module is further configured to:

[0203] arranging each of the pending boiler operation parameter items in an order from large to small according to a second importance parameter, to obtain a second influence importance sequence of the pending boiler operation parameter items on the experimental pollutant emission concentration;

[0204] According to the second influence importance sequence, a second preset number of pending boiler operation parameter items are selected as preliminary selected second boiler operation parameter items;

[0205] Each of the preliminary selected second boiler operation parameter items is taken as a target preliminary selected second boiler operation parameter item one by one, and a corresponding second significance parameter distribution table is obtained according to the parameter level interval freedom of the target preliminary selected second boiler operation parameter item and the second error freedom corresponding to the second error mean square;

[0206] According to a second preset significance level threshold, a second significance parameter critical value corresponding to the second significance parameter of the target preliminary selected second boiler operation parameter item is determined from the second significance parameter distribution table;

[0207] A second significance test parameter corresponding to the second significance parameter is obtained;

[0208] If the second significance parameter is greater than the second significance parameter critical value and the second significance test parameter is less than the second preset significance level threshold, it is determined that the influence degree of the target preliminary selected second boiler operation parameter item on the experimental pollutant emission concentration is significant, and the target preliminary selected second boiler operation parameter item is taken as a second boiler operation parameter item for the experimental pollutant emission concentration;

[0209] At least one second boiler operation parameter item for the experimental pollutant emission concentration is obtained.

[0210] In a specific application scenario, before the boiler operation parameter generation module, the device further comprises a boiler operation parameter group generation module, configured to:

[0211] Obtain each of the boiler operation parameter items in the boiler operation parameter item group, and generate a plurality of boiler operation parameter groups based on a plurality of parameter levels corresponding to each of the boiler operation parameter items and a preset experimental design method, wherein each of the boiler operation parameter items and the corresponding set value are included in the boiler operation parameter group;

[0212] According to the set values of each boiler operation parameter item in each of the boiler operation parameter groups, the boiler operation is controlled, a plurality of loss parameters and pollutant emission concentrations corresponding to each of the boiler operation parameter groups are obtained, and according to the plurality of loss parameters, the boiler combustion efficiency corresponding to each of the boiler operation parameter groups is calculated, so as to construct the minimum cost objective function between the boiler operation cost and the boiler operation parameter item group based on the pollutant emission concentration and the boiler combustion efficiency corresponding to each of the boiler operation parameter groups.

[0213] In a specific application scenario, the boiler operation parameter generation module is configured to:

[0214] According to the boiler combustion efficiency corresponding to each of the boiler operation parameter groups, the fuel cost per kilowatt-hour corresponding to each of the boiler operation parameter groups is calculated.

[0215] According to the pollutant emission concentration corresponding to each of the boiler operation parameter groups, the denitration cost per kilowatt-hour corresponding to each of the boiler operation parameter groups is calculated.

[0216] The sum of the fuel cost per kilowatt-hour and the denitration cost per kilowatt-hour corresponding to each of the boiler operation parameter groups is calculated to obtain the boiler operation cost corresponding to each of the boiler operation parameter groups.

[0217] Based on each of the boiler operation parameter groups and the corresponding boiler operation cost, a fitting process is performed to obtain a relationship function between the boiler operation cost and the boiler operation parameter group, and based on the relationship function, the minimum cost objective function between the boiler operation cost and the boiler operation parameter item group is constructed.

[0218] In a specific application scenario, the pending boiler operation parameter item at least includes the oxygen content at the furnace outlet, the secondary air distribution mode, the burner swing angle, the overfire air swing angle, the overfire air door opening degree, and the secondary air box pressure.

[0219] In a specific application scenario, the preset constraint condition is a pollutant emission concentration constraint condition.

[0220] The application provides a boiler operation parameter determination device. Firstly, a plurality of to-be-determined boiler operation parameter items are acquired, a first importance parameter and a first saliency parameter of each of the to-be-determined boiler operation parameter items for boiler combustion efficiency are calculated, and a second importance parameter and a second saliency parameter of each of the to-be-determined boiler operation parameter items for pollutant emission concentration are calculated. Secondly, at least one first boiler operation parameter item for boiler combustion efficiency is screened from the plurality of to-be-determined boiler operation parameter items according to the plurality of first importance parameters and the plurality of first saliency parameters, and at least one second boiler operation parameter item for pollutant emission concentration is screened from the plurality of to-be-determined boiler operation parameter items according to the plurality of second importance parameters and the plurality of second saliency parameters. Thirdly, the plurality of first boiler operation parameter items and the plurality of second boiler operation parameter items are integrated to obtain a boiler operation parameter item group. Finally, a minimum cost objective function between boiler operation cost and the boiler operation parameter item group is constructed, and the minimum cost objective function is solved based on a preset constraint condition to generate a set value corresponding to each of the boiler operation parameter items in the boiler operation parameter item group. Compared with the prior art, the application determines the boiler operation parameter by screening the boiler operation parameter items for boiler combustion efficiency from the plurality of to-be-determined boiler operation parameter items according to the importance parameters and the saliency parameters of each of the to-be-determined boiler operation parameter items for boiler combustion efficiency, screening the boiler operation parameter items for pollutant emission concentration from the plurality of to-be-determined boiler operation parameter items according to the importance parameters and the saliency parameters of each of the to-be-determined boiler operation parameter items for pollutant emission concentration, constructing the minimum cost objective function between the boiler operation cost and the screened boiler operation parameter items based on the screened boiler operation parameter items, and determining the boiler operation parameter by solving the minimum cost objective function, thereby realizing automatic setting of the boiler operation parameter, avoiding hysteresis caused by manual response, meeting the demand for real-time adjustment of the boiler operation parameter, and significantly reducing the number of boiler operation parameters to be set, shortening the time consumption for adjustment of the boiler operation parameter, and further ensuring the real-time adjustment of the boiler operation parameter.

[0221] According to an embodiment of the application, a storage medium is provided, which stores at least one executable instruction. The computer executable instruction can execute the boiler operation parameter determination method in any method embodiment.

[0222] Based on the understanding, the technical scheme of the present application can be embodied in the form of a software product. The software product can be stored in a non-volatile storage medium (which can be a CD-ROM, a USB flash disk, a mobile hard disk, etc.), and includes a plurality of instructions for causing a computer device (which can be a personal computer, a server, or a network device, etc.) to execute the method described in various implementation scenarios of the present application.

[0223] Figure 4 A structural diagram of a terminal according to an embodiment of the present application is shown, and the specific embodiments of the present application do not limit the specific implementation of the terminal.

[0224] As shown in the structural diagram, the terminal can include a processor 402, a communications interface 404, a memory 406, and a communications bus 408. Figure 4

[0225] The processor 402, the communications interface 404, and the memory 406 can communicate with each other through the communications bus 408.

[0226] The communications interface 404 is configured to communicate with network elements of other devices, such as clients or other servers.

[0227] The processor 402 is configured to execute the program 410, and specifically can execute the related steps in the above-described method embodiments for determining the boiler operation parameters.

[0228] Specifically, the program 410 can include program code, and the program code includes computer operation instructions.

[0229] The processor 402 can be a central processing unit (CPU), or an application specific integrated circuit (ASIC), or one or more integrated circuits configured to implement the embodiments of the present application. The one or more processors included in the computer device can be processors of the same type, such as one or more CPUs; or can be processors of different types, such as one or more CPUs and one or more ASICs.

[0230] The memory 406 is configured to store the program 410. The memory 406 can include a high-speed RAM memory, and can also include a non-volatile memory, such as at least one disk memory.

[0231] The program 410 can specifically be used to cause the processor 402 to perform the following operations:

[0232] ​Obtaining a plurality of pending boiler operation parameter items, respectively calculating a first importance parameter and a first saliency parameter of each of the pending boiler operation parameter items for boiler combustion efficiency, respectively calculating a second importance parameter and a second saliency parameter of each of the pending boiler operation parameter items for pollutant emission concentration;

[0233] According to the plurality of first importance parameters and the plurality of first saliency parameters, screening at least one first boiler operation parameter item for boiler combustion efficiency from the plurality of the pending boiler operation parameter items, and according to the plurality of second importance parameters and the plurality of second saliency parameters, screening at least one second boiler operation parameter item for pollutant emission concentration from the plurality of the pending boiler operation parameter items;

[0234] Integrating each of the first boiler operation parameter items and each of the second boiler operation parameter items to obtain a boiler operation parameter item group;

[0235] Constructing a minimum cost objective function between boiler operation cost and the boiler operation parameter item group, and solving the minimum cost objective function based on a preset constraint condition to generate a set value corresponding to each boiler operation parameter item in the boiler operation parameter item group.

[0236] The storage medium can further include an operating system and a network communication module. The operating system is a program for managing the hardware and software resources of the entity device of the above-mentioned boiler operation parameter determination method, and supports the running of information processing programs and other software and / or programs. The network communication module is used to realize the communication between the components in the storage medium and the communication between other hardware and software in the information processing entity device.

[0237] Each embodiment in the specification is described in a progressive manner, and each embodiment focuses on the difference from other embodiments. The same or similar parts of each embodiment can be referred to each other. For the system embodiment, since it basically corresponds to the method embodiment, the description is relatively simple, and the relevant parts can be referred to the part of the method embodiment.

[0238] The above only describes the preferred embodiments of the present application and is not intended to limit the present application. For those skilled in the art, the present application can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A method for determining boiler operating parameters, characterized in that: include: Obtaining a plurality of pending boiler operating parameter items, calculating a first importance parameter and a first significance parameter for each of the pending boiler operating parameter items with respect to boiler combustion efficiency, and calculating a second importance parameter and a second significance parameter for each of the pending boiler operating parameter items with respect to pollutant emission concentration; screening at least one first boiler operating parameter item for boiler combustion efficiency from the plurality of pending boiler operating parameter items based on the plurality of first importance parameters and the plurality of first significance parameters, and screening at least one second boiler operating parameter item for pollutant emission concentration from the plurality of pending boiler operating parameter items based on the plurality of second importance parameters and the plurality of second significance parameters; integrating each of the first boiler operating parameter items and each of the second boiler operating parameter items to obtain a boiler operating parameter item group; A minimum cost objective function between boiler operating cost and the boiler operating parameter item group is constructed, and based on preset constraints, the minimum cost objective function is solved to generate set values ​​corresponding to each boiler operating parameter item in the boiler operating parameter item group.

2. The method according to claim 1, characterized in that Acquiring a plurality of pending boiler operating parameter items, and calculating a first importance parameter and a first significance parameter of each of the pending boiler operating parameter items with respect to boiler combustion efficiency, including: Acquire multiple pending boiler operating parameter items, and generate multiple experimental boiler operating parameter groups based on multiple parameter levels corresponding to each of the pending boiler operating parameter items and a preset experimental design method, wherein the experimental boiler operating parameter groups include each of the pending boiler operating parameter items and corresponding experimental set values; Controlling boiler operation according to the experimental set values ​​of each undetermined boiler operating parameter item in each of the experimental boiler operating parameter groups, obtaining a plurality of experimental loss parameters and experimental pollutant emission concentrations corresponding to each of the experimental boiler operating parameter groups, and calculating the experimental boiler combustion efficiency corresponding to each of the experimental boiler operating parameter groups based on the plurality of experimental loss parameters; Calculate the average value of the experimental boiler combustion efficiency level at each parameter level for each undetermined boiler operating parameter item, and calculate the range of the average values ​​of the combustion efficiency levels of multiple experimental boilers, to obtain the first importance parameter of each undetermined boiler operating parameter item with respect to the boiler combustion efficiency, wherein each undetermined boiler operating parameter item corresponds to one first importance parameter; Calculate the total mean value of experimental boiler combustion efficiency for each undetermined boiler operating parameter item; Calculating the sum of squares of first deviations between the average values ​​of the combustion efficiencies of the experimental boilers for each of the pending boiler operating parameter items and the total average value of the combustion efficiencies of the experimental boilers, respectively, to obtain a plurality of first parameter level sums of squares, wherein each of the pending boiler operating parameter items corresponds to one first parameter level sum of squares; Count the number of parameter levels of each undetermined boiler operating parameter item respectively, and subtract 1 from the number of each parameter level to obtain the degrees of freedom between the parameter levels of each undetermined boiler operating parameter item, wherein each undetermined boiler operating parameter item corresponds to one degree of freedom between the parameter levels; Calculate the quotient between the sum of squares between each first parameter level and the corresponding degree of freedom between parameter levels to obtain the mean square between the first parameter levels of each undetermined boiler operating parameter item; Obtaining a first error mean square for each undetermined boiler operating parameter item, calculating a quotient between the first parameter level mean square and the corresponding first error mean square for each undetermined boiler operating parameter item, and obtaining a first significance parameter for each undetermined boiler operating parameter item with respect to boiler combustion efficiency, wherein each undetermined boiler operating parameter item corresponds to one first significance parameter; Calculating the second importance parameter and the second significance parameter of each of the pending boiler operating parameter items with respect to the pollutant emission concentration respectively, including: Calculate the average value of the experimental pollutant emission concentration level of each undetermined boiler operating parameter item at each parameter level, and calculate the range of multiple experimental pollutant emission concentration level average values ​​to obtain the second importance parameter of each undetermined boiler operating parameter item with respect to the experimental pollutant emission concentration, wherein each undetermined boiler operating parameter item corresponds to one second importance parameter; Calculate the total mean value of experimental pollutant emission concentration for each undetermined boiler operating parameter item; Calculating the second sum of squares of deviations between the average values ​​of the experimental pollutant emission concentration levels of each undetermined boiler operating parameter item and the total mean value of the experimental pollutant emission concentration, respectively, to obtain a plurality of second parameter level sums of squares, wherein each undetermined boiler operating parameter item corresponds to one second parameter level sum of squares; Obtain the degrees of freedom between parameter levels of each undetermined boiler operating parameter item; Calculate the quotient between the sum of squares between each second parameter level and the corresponding degree of freedom between parameter levels to obtain the mean square between the second parameter levels of each undetermined boiler operating parameter item; Obtain the second error mean square of each pending boiler operating parameter item, calculate the quotient between the second parameter level mean square of each pending boiler operating parameter item and the corresponding second error mean square, and obtain the second significance parameter of each pending boiler operating parameter item for the experimental pollutant emission concentration, wherein each pending boiler operating parameter item corresponds to a second significance parameter.

3. The method according to claim 2, characterized in that The step of selecting at least one first boiler operating parameter item for boiler combustion efficiency from the plurality of pending boiler operating parameter items based on the plurality of first importance parameters and the plurality of first significance parameters includes: Arrange the various pending boiler operating parameter items in descending order of the first importance parameter to obtain a first impact importance sequence of the pending boiler operating parameter items on boiler combustion efficiency; selecting a first preset number of pending boiler operating parameter items as pre-selected first boiler operating parameter items according to the first impact importance sequence; Taking each of the preliminarily selected first boiler operating parameter items as a target preliminarily selected first boiler operating parameter item one by one, and obtaining a corresponding first significance parameter distribution table according to the degrees of freedom between parameter levels of the target preliminarily selected first boiler operating parameter item and the first error degrees of freedom corresponding to the first error mean square; Determining, from the first significance parameter distribution table, a first significance parameter critical value corresponding to the first significance parameter of the target preliminary first boiler operating parameter item according to a first preset significance level threshold; Obtaining a first significance test parameter corresponding to the first significance parameter; If the first significance parameter is greater than the first significance parameter critical value, and the first significance test parameter is less than the first preset significance level threshold, then it is determined that the impact of the target preliminary selected first boiler operating parameter item on the boiler combustion efficiency is a significant impact, and the target preliminary selected first boiler operating parameter item is used as the first boiler operating parameter item for boiler combustion efficiency; obtaining at least one first boiler operating parameter item for boiler combustion efficiency; At least one second boiler operating parameter item for pollutant emission concentration is selected from the plurality of pending boiler operating parameter items based on the plurality of second importance parameters and the plurality of second significance parameters, including: Arrange the various pending boiler operating parameter items in descending order of the second importance parameter to obtain a second importance sequence of the pending boiler operating parameter items on the experimental pollutant emission concentration; selecting a second preset number of undetermined boiler operating parameter items according to the second impact importance sequence as preliminarily selected second boiler operating parameter items; Taking each of the preliminary selected second boiler operating parameter items as a target preliminary selected second boiler operating parameter item, and obtaining a corresponding second significance parameter distribution table according to the degrees of freedom between parameter levels of the target preliminary selected second boiler operating parameter item and the second error degrees of freedom corresponding to the second error mean square; Determining, from the second significance parameter distribution table, a second significance parameter critical value corresponding to the second significance parameter of the target preliminary second boiler operating parameter item according to a second preset significance level threshold; Obtaining a second significance test parameter corresponding to the second significance parameter; If the second significance parameter is greater than the second significance parameter critical value, and the second significance test parameter is less than the second preset significance level threshold, then it is determined that the degree of influence of the target preliminary second boiler operating parameter item on the experimental pollutant emission concentration is significant, and the target preliminary second boiler operating parameter item is used as the second boiler operating parameter item for the experimental pollutant emission concentration; At least one second boiler operating parameter item corresponding to the experimental pollutant emission concentration is obtained.

4. The method according to claim 1, wherein Before constructing the minimum cost objective function between the boiler operating cost and the boiler operating parameter item group, the method further includes: Obtaining each boiler operating parameter item in the boiler operating parameter item group, and generating a plurality of boiler operating parameter groups based on a plurality of parameter levels corresponding to each boiler operating parameter item and a preset experimental design method, wherein the boiler operating parameter groups include each boiler operating parameter item and a corresponding set value; The boiler operation is controlled according to the set value of each boiler operating parameter item in each boiler operating parameter group, and multiple loss parameters and pollutant emission concentrations corresponding to each boiler operating parameter group are obtained. The boiler combustion efficiency corresponding to each boiler operating parameter group is calculated based on the multiple loss parameters, so as to construct a minimum cost objective function between the boiler operating cost and the boiler operating parameter item group based on the pollutant emission concentration and boiler combustion efficiency corresponding to each boiler operating parameter group.

5. The method according to claim 4, characterized in that The constructing of a minimum cost objective function between the boiler operating cost and the boiler operating parameter item group includes: Calculating the fuel cost per kilowatt-hour corresponding to each boiler operating parameter group according to the boiler combustion efficiency corresponding to each boiler operating parameter group; Calculating the denitrification cost per kilowatt-hour corresponding to each boiler operating parameter group according to the pollutant emission concentration corresponding to each boiler operating parameter group; Calculating the sum of the fuel cost per kilowatt-hour and the denitrification cost per kilowatt-hour corresponding to each boiler operating parameter group respectively to obtain the boiler operating cost corresponding to each boiler operating parameter group; Based on each of the boiler operating parameter groups and the corresponding boiler operating costs, fitting processing is performed to obtain a relationship function between the boiler operating cost and the boiler operating parameter group, and based on the relationship function, a minimum cost objective function between the boiler operating cost and the boiler operating parameter item group is constructed.

6. The method according to claim 1, characterized in that The boiler operating parameters to be determined include at least the oxygen content at the furnace outlet, the secondary air distribution method, the burner swing angle, the burnout air swing angle, the burnout air door opening and the secondary air box pressure.

7. The method according to claim 1, characterized in that The preset constraint condition is a pollutant emission concentration constraint condition.

8. A device for determining boiler operating parameters, characterized in that: include: an importance and significance parameter calculation module, configured to obtain a plurality of pending boiler operating parameter items, and respectively calculate a first importance parameter and a first significance parameter for each of the pending boiler operating parameter items with respect to boiler combustion efficiency, and respectively calculate a second importance parameter and a second significance parameter for each of the pending boiler operating parameter items with respect to pollutant emission concentration; a boiler operating parameter item screening module, configured to screen at least one first boiler operating parameter item for boiler combustion efficiency from a plurality of pending boiler operating parameter items based on a plurality of first importance parameters and a plurality of first significance parameters, and to screen at least one second boiler operating parameter item for pollutant emission concentration from a plurality of pending boiler operating parameter items based on a plurality of second importance parameters and a plurality of second significance parameters; a boiler operating parameter item integration module, configured to integrate each of the first boiler operating parameter items and each of the second boiler operating parameter items to obtain a boiler operating parameter item group; The boiler operating parameter generation module is used to construct a minimum cost objective function between the boiler operating cost and the boiler operating parameter item group, and solve the minimum cost objective function based on preset constraints to generate the set values ​​corresponding to each boiler operating parameter item in the boiler operating parameter item group.

9. A storage medium storing at least one executable instruction, characterized in that: The executable instructions enable the processor to execute operations corresponding to the method for determining boiler operating parameters according to any one of claims 1 to 7.

10. A terminal comprising: A processor, a memory, a communication interface, and a communication bus, wherein the processor, the memory, and the communication interface communicate with each other via the communication bus; The memory is used to store at least one executable instruction, wherein the executable instruction enables the processor to execute an operation corresponding to the method for determining boiler operating parameters according to any one of claims 1 to 7.

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