Method and system for controlling coal feeder of coal pulverizing system driven by early warning model

Abstract

The invention discloses a coal pulverizing system coal feeder control method and system driven by an early warning model. The system comprises a first subtraction module, a first tracking value module, a first addition module, a second addition module, a first OR module, a first switching module, a third addition module, a first function curve module, a second switching module, a first delay module, a third switching module, a second OR module, a first pulse module, a third OR module and a manual operator control module. And the first non-module is used for determining a given value of the coal feeding amount of the coal feeder and an automatic state of the coal feeder. According to the method, the coal feeder model of the coal pulverizing system is adopted as an initial judgment condition, and the boundary conditions suitable for safe operation of the coal feeder are formulated in combination with the equipment operation conditions under various working conditions, so that the operation state of the coal feeder in the coal pulverizing system of the thermal power plant is optimized, and stable and efficient work of the coal feeder is ensured.

Description

Technical Field

[0001] The invention belongs to the field of intelligent control of thermal power plants, and in particular relates to a coal feeder control method and system of a pulverizing system driven by an early warning model. Background Art

[0002] The milling system is a complex key system and a typical three-input and three-output, nonlinear time-varying system. There is a serious coupling between the control variable and the controlled variable, which leads to the poor effect of traditional control strategies.

[0003] Although a variety of decoupling control strategies have been proposed in previous studies, most of these methods are based on linear models and are difficult to meet actual engineering needs. In addition, these studies pay less attention to the impact of process disturbances, such as the problem of mixed coal combustion caused by changes in coal moisture. Based on the reasons under various operating conditions, it is urgent to develop a coal feeder control method and system driven by an early warning model, aiming to predict and prevent potential problems through real-time monitoring and analysis of data, and improve the stability and economy of the coal mill pulverizing system. Summary of the invention

[0004] The purpose of the present invention is to provide a control method and system for a coal feeder in a pulverizing system driven by an early warning model. The present invention adopts a model of a coal feeder in a pulverizing system as an initial judgment condition, and combines the equipment operating conditions under various working conditions to formulate boundary conditions suitable for the safe operation of the coal feeder, which is used to optimize the operating state of the coal feeder in the pulverizing system of a thermal power plant and ensure its stable and efficient operation.

[0005] In order to achieve the above object, the present invention adopts the following technical solution: A coal feeder control system of a pulverizing system driven by an early warning model comprises a first subtraction module, a first tracking value module, a first addition module, a second addition module, a first OR module, a first switching module, a third addition module, a first function curve module, a second switching module, a first delay module, a third switching module, a second OR module, a first pulse module, a third OR module, a hand operator control module, a first NOT module, a coal feed amount given value of the coal feeder and an automatic state of the coal feeder; The OUT terminal of the hand operator control module is connected to the first subtraction module; the first switching module is connected to the second addition module, and the output terminal of the second addition module is connected to the first OR module; the output terminal of the first subtraction module and the output terminal of the first OR module are both connected to the T terminal and the S terminal of the first tracking value module; the output terminal of the first tracking value module is connected to the first addition module; the output terminal of the first addition module and the output terminal of the first switching module are both connected to the third addition module, and the output terminal of the third addition module is connected to the PV terminal of the hand operator control module; The output end of the third switching module is connected to the PV2 end of the second switching module, and the output end of the second switching module is connected to the FV end of the hand operator control module; The output end of the first delay module is connected to the second OR module, and the output end of the second OR module is connected to the FceF end of the hand operator control module; The output end of the third OR module is connected to the DisD end of the hand operator control module, and the NotA end of the hand operator control module is connected to the automatic state of the coal machine through the first NOT module.

[0006] A further improvement of the present invention is that the fuel master control output is connected to the first subtraction module and the first addition module respectively.

[0007] A further improvement of the present invention is that less than two coal feeders are automatically connected to the second adding module.

[0008] A further improvement of the present invention is that the early warning coal feeding amount bias is increased by 5t / h and connected to the S end of the first or module and the first switching module.

[0009] A further improvement of the present invention is that the coal feed rate of the coal feeder is sequentially connected to the FB end of the first function curve module and the hand operator control module.

[0010] A further improvement of the present invention is that the model output coal quantity is connected to the PV1 end of the second switching module; and the model early warning switching switch is connected to the S end of the second switching module.

[0011] A further improvement of the present invention is that the coal feeder stops being connected to the S ends of the first delay module and the third switching module in sequence.

[0012] A further improvement of the present invention is that the coal feeder minimum position and the model warning switch position are both connected to the second or module.

[0013] A further improvement of the present invention is that the coal feeder is manually connected to the FceM terminal of the hand operator control module; The boiler boost sequence control is connected to the SelA terminal of the first pulse module and the hand operator control module in sequence; The coal mill temperature early warning and coal feeder interlock increase and the lubricating oil early warning and coal feeder interlock increase are both connected to the third or module.

[0014] The early warning model driven coal feeder control method of the pulverizing system includes: When there are less than two coal feeders, the automatic and first switching modules are all 1 or the early warning coal feeding amount bias increases by 5t / h to 1, the first tracking value module is triggered, and its output is the subtraction value of the output end of the hand operator control module and the fuel main control output, and the addition value is made with the fuel main control output; then, when the early warning coal feeding amount bias increases by 5t / h to 1, 5 is added to the addition value, and finally the result is passed to the input instruction of the PV end of the hand operator control module; After the coal feeding amount of the coal feeder is calculated by the first function curve module, the final result is transmitted to the output feedback value of the FB terminal of the hand operator control module; When the model early warning switch position is 1, the model outputs the coal quantity to the mandatory target value at the FV end of the hand operator control module; when the model early warning switch position is 0, when the coal feeder stops at 1, the final output constant 0 is the mandatory target value at the FV end of the hand operator control module; when the model early warning switch position is 0, when the coal feeder stops at 0, the final output constant 10 is the mandatory target value at the FV end of the hand operator control module; When the coal feeder stops at 1 or the coal feeder minimum position is set to 1 or the model warning switch position is 1, the selection of the FceF terminal of the hand operator control module is triggered; otherwise, this function is not triggered; When the manual mode of the coal feeder is 1, the manual selection of the FceM terminal of the hand operator control module is triggered; otherwise, this function is not triggered; When the boiler boost sequence control is 1, the selection of the SelA terminal of the hand operator control module is triggered to be automatic; otherwise, this function is not triggered; When the coal mill temperature warning and the coal feeder lock increase or the lubricating oil warning and the coal feeder lock increase are 1, the lock reduction of the DisD terminal of the hand operator control module is triggered; otherwise, this function is not triggered; The OUT end of the hand operator control module is the given value of the coal feeder's coal feeding amount. When NotA of the hand operator control module is 0, the automatic state of the coal feeder is 1.

[0015] Compared with the prior art, the present invention has at least the following beneficial technical effects: The present invention provides a coal feeder control method for a pulverizing system driven by an early warning model, which uses the working status data of the coal feeder to determine whether preset conditions are met, sends the working status judgment result to the user terminal, completes automatic early warning, further improves the coal feeder control strategy, improves the quality of system operating parameters, and ensures safe, efficient and economical operation of the unit.

[0016] The invention provides a coal feeder control system for a pulverizing system driven by an early warning model, which adopts the construction of a digital twin system for pulverizing of thermal power units and proposes an intelligent coal mill operation combination control strategy. The system can achieve full-cycle tracking and monitoring and targeted adjustment to meet the pulverizing application service requirements, dynamically optimize the operating status of the coal feeder during the pulverizing process, and intelligently select the best operation combination mode of the coal mill.

[0017] In summary, the early warning model-driven pulverizing system coal feeder control method and system described in the present invention solves the serious coupling situation between the control quantity and the controlled quantity, and aims to predict and prevent potential problems by real-time monitoring and analysis of data, thereby improving the stability and economy of the coal mill pulverizing system. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the specific implementation methods of the present invention or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0019] Figure 1 Schematic diagram of the coal feeder control system of the pulverizing system driven by the early warning model.

[0020] Figure 2 This is a rendering of an embodiment of the present invention.

[0021] In the attached figure: 001, fuel main control output, 002, less than two coal feeders, automatic, 003, the first switching module, 004, warning coal feed amount bias increased by 5t / h, 005, coal feeder coal feed amount, 006, model output coal amount, 007, coal feeder stop, 008, set coal feeder minimum position, 009, model warning switch position, 010, coal feeder cut manual, 011, boiler boost sequence control, 012, coal mill temperature warning and coal feeder lock increase, 013, lubricating oil warning and coal feeder lock increase, 014, the first subtraction module, 015, the first A tracking value module, 016, a first addition module, 017, a second addition module, 018, a first OR module, 019, a first switching module, 020, a third addition module, 021, a first function curve module, 022, a second switching module, 023, a first delay module, 024, a third switching module, 025, a second OR module, 026, a first pulse module, 027, a third OR module, 028, a hand operator control module, 029, a first non-module, 030, a given value of the coal feed amount of the coal feeder, 031, an automatic state of the coal feeder. DETAILED DESCRIPTION

[0022] In the following, only some exemplary embodiments are briefly described. As those skilled in the art will appreciate, the described embodiments may be modified in various ways without departing from the spirit or scope of the present invention. Therefore, the drawings and descriptions are considered to be exemplary and non-restrictive in nature.

[0023] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0024] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0025] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, an electrical connection, or a communication; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0026] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0027] It should be understood that when used in this specification and the appended claims, the terms "include" and "comprises" indicate the presence of described features, integers, steps, operations, elements and / or components, but do not exclude the presence or addition of one or more other features, integers, steps, operations, elements, components and / or combinations thereof.

[0028] It should also be understood that the terms used in the present specification are only for the purpose of describing specific embodiments and are not intended to limit the present invention. As used in the present specification and the appended claims, unless the context clearly indicates otherwise, the singular forms "a", "an" and "the" are intended to include plural forms.

[0029] It should be further understood that the term "and / or" used in the present description and the appended claims refers to any and all possible combinations of one or more of the associated listed items, and includes these combinations.

[0030] Various structural schematic diagrams of the embodiments disclosed in the present invention are shown in the accompanying drawings. These figures are not drawn to scale, and some details are magnified and some details may be omitted for the purpose of clear expression. The shapes of various regions and layers shown in the figures and the relative sizes and positional relationships therebetween are only exemplary, and may deviate in practice due to manufacturing tolerances or technical limitations, and those skilled in the art may additionally design regions / layers with different shapes, sizes, and relative positions according to actual needs.

[0031] The embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0032] The early warning model-driven pulverizing system coal feeder control method and system provided by the present invention adopts the pulverizing system coal feeder model as the initial judgment condition, combines the equipment operating conditions under various working conditions, and formulates boundary conditions suitable for the safe operation of the coal feeder, which are used to optimize the operating state of the coal feeder in the pulverizing system of a thermal power plant and ensure its stable and efficient operation.

[0033] Example 1 like Figure 1As shown, the coal feeder control system of the pulverizing system driven by the early warning model provided by the present invention includes: fuel main control output 001, less than two coal feeders automatic 002, first switching module 003, early warning coal feeding amount bias increase 5t / h 004, coal feeder coal feeding amount 005, model output coal amount 006, coal feeder stop 007, set coal feeder minimum position 008, model early warning switch position 009, coal feeder manual 010, boiler boost sequence control 011, coal mill temperature early warning and coal feeder lock increase 012, lubricating oil early warning and coal feeder lock increase 01 3. The first subtraction module 014, the first tracking value module 015, the first addition module 016, the second addition module 017, the first OR module 018, the first switching module 019, the third addition module 020, the first function curve module 021, the second switching module 022, the first delay module 023, the third switching module 024, the second OR module 025, the first pulse module 026, the third OR module 027, the hand operator control module 028, the first non-module 029, the coal feeder coal feeding amount set value 030 and the coal feeder automatic state 031.

[0034] Among them, the OUT ends of the fuel main control output 001 and the hand-operated control module 028 are both connected to the first subtraction module 014; the coal feeders are less than two automatic 002 and the first switching module 003 are both connected to the second addition module 017, and the output end of the second addition module 017 and the early warning coal feeding amount bias increase 5t / h004 are both connected to the first OR module 018; the output end of the first subtraction module 014 and the output end of the first OR module 018 are both connected to the T end and S end of the first tracking value module 015; the output end of the first tracking value module 015 and the fuel main control output 001 are both connected to the first addition module 016, and the early warning coal feeding amount bias increase 5t / h004 is connected to the S end of the first switching module 019; the output end of the first addition module 016 and the output end of the first switching module 019 are both connected to the third addition module 020, and the output end of the third addition module 020 is connected to the PV end of the hand-operated control module 028.

[0035] The coal feeder coal supply amount 005 is connected to the FB end of the first function curve module 021 and the hand operator control module 028 in sequence.

[0036] The coal feeder stop 007 is connected to the first delay module 023 and the S end of the third switching module 024 in sequence, the model output coal quantity 006, the output end of the third switching module 024, and the model early warning switching switch position 009 are correspondingly connected to the PV1 end, PV2 end, and S end of the second switching module 022, and the output end of the second switching module 022 is connected to the FV end of the hand operator control module 028.

[0037] The coal feeder stop 007 is connected to the first delay module 023 in sequence, the output end of the first delay module 023, the coal feeder minimum position 008, and the model warning switch position 009 are all connected to the second or module 025, and the output end of the second or module 025 is connected to the FceF end of the hand operator control module 028.

[0038] The coal feeder manual switch 010 is connected to the FceM terminal of the hand operator control module 028.

[0039] The boiler boost sequence control 011 is connected to the first pulse module 026 and the SelA terminal of the hand operator control module 028 in sequence.

[0040] The coal mill temperature warning and coal feeder lockout increase 012 and the lubricating oil warning and coal feeder lockout increase 013 are both connected to the third OR module 027, the output end of the third OR module 027 is connected to the DisD end of the hand operator control module 028, and the NotA end of the hand operator control module 028 is connected to the coal machine automatic state 031 through the first NOT module 029.

[0041] Example 2 like Figure 1 As shown, the early warning model driven coal feeder control method of the pulverizing system provided by the present invention comprises: 1) When there are less than two coal feeders, when the automatic 002 and the first switching module 003 are both 1 or the warning coal feeding amount bias increase of 5t / h004 is 1, the first tracking value module 015 is triggered, and its output is the subtraction value of the output end of the hand operator control module 028 and the fuel main control output 001, and the addition value is added to the fuel main control output 001; then, when the warning coal feeding amount bias increase of 5t / h004 is 1, 5 is added to the addition value, and finally the result is passed to the input instruction of the PV end of the hand operator control module 028.

[0042] 2) After the coal feeder coal quantity 005 is calculated by the first function curve module 021, the final result is transmitted to the output feedback value of the hand operator control module 028FB end.

[0043] 3) When the model early warning switch position 009 is 1, the model output coal quantity 006 is transmitted to the forced target value of the hand operator control module 028FV end; when the model early warning switch position 009 is 0, the coal feeder stops 007 is 1, and the final output constant 0 is the forced target value to the hand operator control module 028FV end; when the model early warning switch position 009 is 0, the coal feeder stops 007 is 0, and the final output constant 10 is the forced target value to the hand operator control module 028FV end.

[0044] 4) When the coal feeder stops 007 and is set to 1, or the coal feeder minimum position 008 is set to 1, or the model warning switch position 009 is 1, the selection of the hand operator control module 028FceF terminal is forced; otherwise, this function will not be triggered.

[0045] 5) When the coal feeder manual switch 010 is 1, the manual selection of the hand operator control module 028FceM terminal is triggered; otherwise, this function will not be triggered.

[0046] 6) When the boiler boost sequence 011 is 1, the selection of the hand operator control module 028SelA terminal is triggered to be automatic; otherwise, this function will not be triggered.

[0047] 7) When the coal mill temperature warning and the coal feeder lock increase 012 or the lubricating oil warning and the coal feeder lock increase 013 are 1, the lock reduction of the hand operator control module 028DisD terminal is triggered; otherwise, this function will not be triggered.

[0048] 8) The OUT terminal of the hand operator control module 028 is the coal feeder coal quantity set value 030. When NotA of the hand operator control module 028 is 0, the coal feeder automatic state 031 is 1.

[0049] Example 3 like Figure 2 As shown, through the implementation and application of the technology of the present invention in a simulation environment, within the time range of 0-288, real is the actual value of the coal feeding amount, and predict is the predicted value of the coal feeding amount. After simulation, the actual coal feeding amount is obtained after model analysis. The temperature value within the time range is accurately predicted, and the predicted temperature range is 200t / h to 700t / h. The prediction accuracy is geometrically consistent, and the coal feeding amount result can be well predicted with high consistency, which ensures the safety of the unit in production operation and avoids a series of unsafe factors caused by imbalance in coal feeding.

[0050] The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention. It is obvious to those skilled in the art that the present invention is not limited to the details of the above exemplary embodiments, and the present invention can be implemented in other specific forms without departing from the spirit or basic features of the present invention. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive. The scope of the present invention is defined by the attached claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims are included in the present invention. Any figure mark in the claims should not be regarded as limiting the claims involved.

[0051] In addition, it should be understood that although this specification is described in accordance with the implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other implementation modes that can be understood by those skilled in the art. The above content is only to illustrate the technical idea of ​​the present invention, and cannot be used to limit the protection scope of the present invention. Any changes made on the basis of the technical solution according to the technical idea proposed by the present invention shall fall within the protection scope of the claims of the present invention.

Claims

1. The coal feeder control system of the pulverizing system driven by the early warning model is characterized by: It comprises a first subtraction module (014), a first tracking value module (015), a first addition module (016), a second addition module (017), a first OR module (018), a first switching module (019), a third addition module (020), a first function curve module (021), a second switching module (022), a first delay module (023), a third switching module (024), a second OR module (025), a first pulse module (026), a third OR module (027), a hand operator control module (028), a first non-module (029), a coal feeder coal feed amount set value (030) and a coal feeder automatic state (031); The OUT end of the hand operator control module (028) is connected to the first subtraction module (014) and the coal feeder coal supply set value (030); the first switching module (003) is connected to the second addition module (017), and the output end of the second addition module (017) is connected to the first OR module (018); the output end of the first subtraction module (014) and the output end of the first OR module (018) are both connected to the T end and the S end of the first tracking value module (015); the output end of the first tracking value module (015) is connected to the first addition module (016); the output end of the first addition module (016) and the output end of the first switching module (019) are both connected to the third addition module (020), and the output end of the third addition module (020) is connected to the PV end of the hand operator control module (028); The output end of the third switching module (024) is connected to the PV2 end of the second switching module (022), and the output end of the second switching module (022) is connected to the FV end of the hand operator control module (028); The output end of the first delay module (023) is connected to the second OR module (025), and the output end of the second OR module (025) is connected to the FceF end of the handheld operator control module (028); The output end of the third OR module (027) is connected to the DisD end of the hand operator control module (028), and the NotA end of the hand operator control module (028) is connected to the coal machine automatic state (031) through the first NOT module (029).

2. The early warning model driven coal feeder control system of the pulverizing system according to claim 1 is characterized in that: The fuel master control output (001) is connected to the first subtraction module (014) and the first addition module (016) respectively.

3. The early warning model driven coal feeder control system of the pulverizing system according to claim 2 is characterized in that: Coal feeders less than two are automatically (002) connected to the second adding module (017).

4. The early warning model driven coal feeder control system of the pulverizing system according to claim 3 is characterized in that: The early warning coal feed amount bias increase of 5t / h (004) is connected to the S end of the first or module (018) and the first switching module (019).

5. The early warning model driven coal feeder control system of the pulverizing system according to claim 4 is characterized in that: The coal feed rate (005) of the coal feeder is connected to the FB end of the first function curve module (021) and the hand operator control module (028) in sequence.

6. The early warning model driven coal feeder control system of the pulverizing system according to claim 5, characterized in that: The model output coal quantity (006) is connected to the PV1 terminal of the second switching module (022); the model early warning switching switch position (009) is connected to the S terminal of the second switching module (022).

7. The early warning model driven coal feeder control system of the pulverizing system according to claim 6, characterized in that: The coal feeder stop (007) is connected to the S end of the first delay module (023) and the third switching module (024) in sequence.

8. The early warning model driven coal feeder control system of the pulverizing system according to claim 7, characterized in that: The coal feeder minimum position (008) and the model warning switch position (009) are both connected to the second or module (025).

9. The early warning model driven coal feeder control system of the pulverizing system according to claim 8, characterized in that: The manual switch (010) of the coal feeder is connected to the FceM terminal of the hand operator control module (028); The boiler boost sequence control (011) is connected to the first pulse module (026) and the SelA terminal of the hand operator control module (028) in sequence; The coal mill temperature warning and coal feeder lockout increase (012) and the lubricating oil warning and coal feeder lockout increase (013) are both connected to the third or module (027).

10. A coal feeder control method for a pulverizing system driven by an early warning model, characterized in that: The method is based on the coal feeder control system of the pulverizing system driven by the early warning model described in claim 9, comprising: When there are less than two coal feeders, the automatic (002) and the first switching module (003) are both 1 or the early warning coal feeding amount bias increase of 5t / h (004) is 1, the first tracking value module (015) is triggered, and its output is the subtraction value of the output end of the hand operator control module (028) and the fuel main control output (001), and the addition value is added to the fuel main control output (001); then, when the early warning coal feeding amount bias increase of 5t / h (004) is 1, 5 is added to the addition value, and finally the result is transmitted to the input instruction of the PV end of the hand operator control module (028); After the coal feeder coal quantity (005) is calculated by the first function curve module (021), the final result is transmitted to the output feedback value of the FB terminal of the hand operator control module (028); When the model early warning switch position (009) is 1, the model output coal quantity (006) is transmitted to the forced target value of the FV terminal of the hand operator control module (028); when the model early warning switch position (009) is 0, when the coal feeder stop (007) is 1, the final output constant 0 is the forced target value of the FV terminal of the hand operator control module (028); when the model early warning switch position (009) is 0, when the coal feeder stop (007) is 0, the final output constant 10 is the forced target value of the FV terminal of the hand operator control module (028); When the coal feeder stop (007) is 1 or the coal feeder minimum position (008) is set to 1 or the model warning switch position (009) is 1, the selection of the FceF terminal of the hand operator control module (028) is triggered; otherwise, this function is not triggered; When the manual mode (010) of the coal feeder is 1, the manual selection of the FceM terminal of the hand operator control module (028) is triggered; otherwise, this function is not triggered; When the boiler boost sequence control (011) is 1, the selection of the SelA terminal of the hand operator control module (028) is triggered to be automatic; otherwise, this function is not triggered; When the coal mill temperature warning and the coal feeder lock increase (012) or the lubricating oil warning and the coal feeder lock increase (013) are 1, the lock reduction of the DisD terminal of the hand operator control module (028) is triggered; otherwise, this function is not triggered; The OUT terminal of the hand operator control module (028) is the coal feeder coal quantity set value (030). When NotA of the hand operator control module (028) is 0, the coal feeder automatic state (031) is 1.

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