Self-adaptive operation decision-making method and system for coal pulverizing system of thermal power generating unit

Abstract

The invention discloses a self-adaptive operation decision-making method and system for a coal pulverizing system of a thermal power generating unit. The method comprises the steps of obtaining specified operation data of the thermal power generating unit and determining the operation state of the unit and the state of the coal pulverizing system according to the specified operation data; establishing a running opportunity rule base and a running sequence rule base of the coal pulverizing system; a coal pulverizing system operation decision inference engine is used for matching the unit operation state with an operation opportunity rule base to obtain the number of sets of coal pulverizing systems needing to be put into operation, and the unit operation state is matched with an operation sequence rule base to obtain a candidate coal pulverizing system list meeting the number of sets of coal pulverizing systems needing to be put into operation to serve as an operation decision; and if only a single operation decision exists, executing the operation decision, and if multiple operation decisions exist, screening a final operation decision from all the operation decisions by using constraint conditions and executing the final operation decision. According to the method, the operation time and sequence of the coal pulverizing system are automatically determined, the automation level of control over the coal pulverizing system is improved, and the wide-range variable load capacity of a thermal power generating unit can be improved.

Description

Technical Field

[0001] This invention relates to the operation control technology of thermal power generating units, specifically to an adaptive operation decision-making method and system for the pulverizing system of a thermal power generating unit. Background Technology

[0002] With the rapid development of new energy installations, the role of thermal power units has transformed from "base load power source" to "regulating power source," and wide-range rapid load change has become one of the important goals for the flexibility of thermal power units.

[0003] In thermal power plants, the pulverizing system (mainly coal mills and related equipment) is the core component that grinds raw coal into qualified pulverized coal and transports it to the boiler for combustion. Its operation directly affects the unit's load-changing performance, safety, stability, and economy. Automatic start-up and shutdown technology for the pulverizing system refers to the timely, accurate, and rapid adjustment of the number of coal mills in operation based on power generation load demand, thereby improving the unit's output responsiveness and better adapting to grid dispatch requirements.

[0004] Currently, research and application of automatic start-up and shutdown technology for pulverizing systems in thermal power units largely focus on the automatic start-up and shutdown process itself, including the automatic start-up and shutdown of equipment such as coal mills and feeders, the opening and closing of related valves, and the automatic switching and setting of control valves. This can reduce the workload of operators and improve the automation level of the control system. However, the timing and sequence of start-up and shutdown of the pulverizing system in thermal power units still largely rely on operators to determine, failing to achieve a true automatic start-up and shutdown process. During load changes in thermal power units, improper selection of the start-up and shutdown timing of the pulverizing system can lead to a drop in main steam pressure and temperature due to excessively low heat load, or overheating of water-cooled wall tubes and high main steam temperature due to excessively high heat load, affecting the unit's load-change performance and operational safety. When the quality of the coal used changes, the start-up and shutdown timing of the pulverizing system must be adjusted accordingly. Considering the uniformity and stability of boiler combustion, prevention of severe boiler coking, and equipment health, the start-up and shutdown of the pulverizing system must have a certain sequence. When the equipment condition changes, the sequence may also need to be changed accordingly. Therefore, the timing and sequence of starting and stopping the pulverizing system are dynamic processes that change dynamically according to the unit's demand load, the type of coal used, and the condition of the equipment. Establishing an adaptive pulverizing system operation decision-making mechanism is the key and challenging point in achieving fully automatic start-up and shutdown of the pulverizing system, and it is also an important technical support for thermal power units to achieve wide-range load variations. Summary of the Invention

[0005] The technical problem to be solved by the present invention is as follows: In view of the above-mentioned problems of the prior art, an adaptive operation decision method and system for pulverizing system of thermal power unit is provided. The method determines the operation status by acquiring the main operation data of thermal power unit, and outputs operation decisions through operation decision inference engine based on the established operation mechanism rule base and operation sequence rule base of pulverizing system, and ensures that the output single operation decision is executed through decision filtering, thereby realizing the automatic determination of operation mechanism and sequence of pulverizing system.

[0006] To solve the above-mentioned technical problems, the technical solution adopted by the present invention is as follows: An adaptive operation decision-making method for a pulverizing system of a thermal power unit includes the following steps: Acquire specified operating data of thermal power units and determine the unit's operating status and the pulverizing system status based on the specified operating data; Establish a runtime rule base and a runtime sequence rule base for the flour milling system; The pulverizing system operation decision inference engine is used to make operation decisions based on the pulverizing system operation rule base, operation sequence rule base, unit operation status and pulverizing system status. Specifically, the unit operation status is matched with the operation rule base to obtain the number of pulverizing systems to be put into operation, and the unit operation status is matched with the operation sequence rule base to obtain a list of candidate pulverizing systems that meet the number of pulverizing systems to be put into operation, which is used as the operation decision. If there is only a single operational decision, then that operational decision is executed. If there are multiple operational decisions, then constraints are used to select the final operational decision from all operational decisions and execute it.

[0007] Furthermore, the runtime machine rule base includes load-based runtime machine rules, which specifically refer to the functional relationship between unit load and the number of pulverizing systems in operation, expressed mathematically as follows: P i ~ P i+1 = f ( N ) The above formula indicates the unit load when the pulverizing system burns the designed coal type. P i ~ P i+1 It needs to be put into operation. N A milling system, in which, P i Representing the thermal power unit i One load point, N The number of milling systems in operation. f This represents the functional relationship between the unit load and the number of pulverizing systems in operation.

[0008] Furthermore, the runtime rule base also includes coal-type-based runtime rules. Specifically, these rules refer to rules that require operation when the coal type used in the pulverizing system differs from the designed coal type. N The mathematical expression for the load point variation of the pulverizing system is as follows: αP i ~ αP i+1 = f 1( N , Co ) In the above formula, α This means that when all pulverizing systems are used Co Coal type, requires commissioning N The coal quality correction factor at the unit load point when using a pulverizing system. f 1 is for combustion Co The functional relationship between unit load and the number of pulverizing systems in operation when different coal types are used; when the calorific value of the coal used is greater than the design coal type. α >1; otherwise, α <1.

[0009] Furthermore, when each pulverizing system in operation uses a different type of coal, the mathematical expression for the operating timing rules based on the coal type is as follows:

[0010] In the above formula, α i Represents fuel use Co i The coal quality correction factor of the coal pulverizing system at the load point. i =1,…, N ; f 2 represents the functional relationship between the unit load and the number of pulverizing systems in operation under the corresponding operating conditions.

[0011] Furthermore, when considering the start-up time of the pulverizing system during unit load changes, the mathematical expression for the runtime rules based on coal type is as follows:

[0012] In the above formula, T This indicates the time required for the powder-making system to start up. V This represents the rate of change of unit load.

[0013] Furthermore, the operational sequence rule base includes priority rules for the low-level milling system and rules for removing unhealthy equipment, wherein: The aforementioned priority rule for the lower-level pulverizing system specifically refers to the following: when the pulverizing system needs to be put into operation as the unit load increases, under the premise that the coal quality of the pulverizing systems is the same and the equipment is in good condition, an operation sequence is established according to the principle of prioritizing the operation of the lower-level pulverizing system; otherwise, the upper-level pulverizing system is shut down first according to the established sequence. The aforementioned unhealthy equipment rejection rule specifically refers to skipping pulverizing systems that are prohibited from operation or are unhealthy from the commissioning sequence, and starting subsequent pulverizing systems according to the deduced operational decisions.

[0014] Furthermore, the constraints include combustion symmetry constraints and coal type selection constraints, wherein: The mathematical expression for combustion symmetry constraints is as follows:

[0015] in, These represent the operational status of the powder-making systems on the left and right sides of each floor. j =1,2,3 l and r Representing the left and right sides; The mathematical expression for the coal type selection constraint is as follows:

[0016] in, M k (excellent), M k (Inferior) represents two pulverizing systems arranged on the same floor, one using high-quality coal and the other using low-quality coal. k for l or r .

[0017] Furthermore, the weight of combustion symmetry constraints is higher than that of coal type selection constraints, so that when there is a conflict between the operational decisions selected by combustion symmetry constraints and coal type selection constraints, the operational decision selected by combustion symmetry constraints is adopted.

[0018] The present invention also proposes an adaptive operation decision system for a thermal power unit pulverizing system, comprising a processor and a computer-readable storage medium, wherein the computer-readable storage medium stores a computer program, and the computer program is executed by the processor to implement the steps of the adaptive operation decision method for the thermal power unit pulverizing system.

[0019] The present invention also proposes a computer-readable storage medium storing a computer program, wherein the computer program, when executed by a processor, implements the steps of the adaptive operation decision method for the pulverizing system of the thermal power unit.

[0020] Compared with the prior art, the advantages of the present invention are as follows: This invention addresses the problem that the start-up and shutdown timing and sequence of pulverizing systems in thermal power units are dynamically changing and difficult to determine. By establishing a runtime rule base that considers unit load and coal type, and a runtime sequence rule base that considers pulverizing system hierarchy and equipment health status, executable runtime decisions are obtained through reasoning. Furthermore, combustion symmetry and coal type selection constraints ensure the output of a single runtime decision. This method achieves automatic determination of the runtime timing and sequence of the pulverizing system without manual intervention, improving the automation level of pulverizing system control and contributing to enhancing the wide-range load variation capability of thermal power units. Attached Figure Description

[0021] Figure 1 This is a flowchart of a method according to an embodiment of the present invention.

[0022] Figure 2 This illustrates the correspondence between unit load and the number of pulverizing systems in operation in this embodiment of the invention. Figure 2 (a) indicates the correspondence when the pulverizing system uses the designed coal type. Figure 2 (b) indicates the corresponding relationship when the calorific value of the coal used in the pulverizing system is lower than that of the designed coal. Detailed Implementation

[0023] The present invention will be further described below with reference to the accompanying drawings and specific preferred embodiments, but this does not limit the scope of protection of the present invention.

[0024] Example 1 To address the problem that the start-up and shutdown timing and sequence of the pulverizing system in thermal power units are dynamically changing and difficult to determine, this embodiment proposes an adaptive operation decision-making method for the pulverizing system of thermal power units. By acquiring the main operating data of the thermal power unit to determine the unit's operating status, an operation rule base considering unit load and coal type is established, as well as an operation sequence rule base considering the pulverizing system hierarchy and equipment health status. Through reasoning, executable operation decisions are obtained, and further, combustion symmetry and coal type selection constraints are used to ensure the output and execution of individual operation decisions. This method achieves automatic determination of the pulverizing system's operation sequence without relying on manual intervention, thereby improving the automation level of the pulverizing system's operation.

[0025] like Figure 1 As shown, the method includes the following steps: S101 acquires specified operating data of thermal power units through a distributed control system, and determines the unit operating status and pulverizing system status based on the specified operating data; S102, Establish the runtime rule base and runtime sequence rule base of the powder making system; S103, the pulverizing system operation decision inference engine is used to make operation decisions based on the pulverizing system operation rule base, operation sequence rule base, unit operation status and pulverizing system status; S104. If there is only a single operating decision, then the operating decision is executed. If there are multiple operating decisions, then the final operating decision is selected from all operating decisions using constraints including combustion symmetry constraints and coal type selection constraints, and then executed.

[0026] The following section uses a 600MW supercritical thermal power unit as an example to illustrate the adaptive operation decision-making of the pulverizing system following the steps outlined above, with detailed explanations for each step.

[0027] In this embodiment, step S101 determines the unit's operating status and the pulverizing system status. In this embodiment, the specified operating data for the thermal power unit includes the unit's target load, actual load, load change rate, the pulverizing system in operation and its coal quantity and type, and the health status of each pulverizing system. This data allows for the determination of whether the unit is increasing / decreasing load and whether it has reached the target load. How to determine the unit's operating status and the pulverizing system status based on this data is well-known to those skilled in the art. This embodiment does not involve improvements to this process, and its specific implementation details are not the focus of this solution. Therefore, the specific implementation process of determining the unit's operating status and the pulverizing system status based on specified operating data will not be elaborated upon.

[0028] In this embodiment, based on the above data, it can be determined that the unit is in the process of increasing its load from 400MW to 500MW and has not yet reached the target load. Currently, the number of pulverizing systems in operation is 4.

[0029] In this embodiment, step S102 includes a runtime rule base that comprises load-based runtime rules and coal-type-based runtime rules. The runtime sequence rule base further comprises low-level pulverizing system priority rules and equipment unhealthy rejection rules. The explanations for each rule are as follows: (1) Load-based runtime rules: The load-based operating mechanism rule specifically refers to the functional relationship between the unit load and the number of pulverizing systems in operation, expressed mathematically as follows: P i ~ P i+1 = f ( N (1) The above formula indicates the unit load when the pulverizing system burns the designed coal type. P i ~ P i+1 It needs to be put into operation. N A complete milling system, see details. Figure 2 (a), where, P i Representing the thermal power uniti One load point, N The number of milling systems in operation. f This represents the functional relationship between the unit load and the number of pulverizing systems in operation.

[0030] (2) Operating timing rules based on coal type: The operation rules based on coal type specifically refer to the need to put the pulverizing system into operation when the coal type used for combustion differs from the design coal type. N The mathematical expression for the load point variation of the pulverizing system is as follows: αP i ~ αP i+1 = f 1( N , Co (2) In the above formula, α This means that when all pulverizing systems are used Co Coal type, requires commissioning N The coal quality correction factor at the unit load point when using a pulverizing system. f 1 is for combustion Co The functional relationship between unit load and the number of pulverizing systems in operation when different coal types are used; when the calorific value of the coal used is greater than the design coal type. α >1; otherwise, α <1. Figure 2 (b) represents the relationship between the unit load and the number of pulverizing systems in operation when the calorific value of the coal used by the unit is less than that of the designed coal. When the coal used by each pulverizing system in operation differs, equation (2) can be further rewritten as: (3) In the above formula, α i Represents fuel use Co i The coal quality correction factor of the coal pulverizing system at the load point. i =1,…, N ; f 2 represents the functional relationship between the unit load and the number of pulverizing systems in operation under the corresponding operating conditions.

[0031] Since the pulverizing system requires a certain amount of time to start up, when the start-up time of the pulverizing system is considered during the unit's load change process, equation (3) can be further rewritten as: (4) In the above formula, T This indicates the time required for the powder-making system to start up. V This represents the rate of change of unit load.

[0032] (3) Priority rule for low-level milling systems: The priority rule for the lower-level pulverizing system specifically refers to the establishment of a sequence of operations based on the principle of prioritizing the operation of the lower-level pulverizing system when the pulverizing system needs to be put into operation as the unit load increases, assuming that the coal quality of the pulverizing system is the same and the equipment is in good condition; conversely, the upper-level pulverizing system should be shut down first according to the established sequence.

[0033] (4) Equipment Unhealth Rejection Rules: The equipment unhealthy rejection rule specifically refers to automatically skipping a certain pulverizing system from the commissioning sequence when it is in a prohibited or unhealthy state, and starting the subsequent pulverizing system according to the inferred operation decision.

[0034] In step S103 of this embodiment, the pulverizing system operation decision inference engine, based on the determined unit operating status and the established pulverizing system timing rule base and operation sequence rule base, infers executable operation decisions. Specifically, it matches the unit operating status with the operation timing rule base to obtain the number of pulverizing systems to be put into operation, and matches the unit operating status with the operation sequence rule base to obtain a list of candidate pulverizing systems that meet the required number of pulverizing systems to be put into operation, which serves as the operation decision. The inputs, inference rules, and outputs of the pulverizing system operation decision inference engine and the operation decision screening can be described by the following table: Table 1. Reasoning process of the decision-making inference engine for the operation of the pulverizing system.

[0035] In this embodiment, the decision-making inference engine of the pulverizing system outputs an operational decision that allows either the left pulverizing system of the third-layer pulverizing system to be started or the right pulverizing system of the third-layer pulverizing system to be started.

[0036] In step S104 of this embodiment, since the pulverizing system operation decision inference engine outputs multiple operation decisions, combustion symmetry constraints and coal type selection constraints are used to filter the operation decisions, wherein: Combustion symmetry constraint refers to the requirement that two pulverizing systems need to be put into operation at each level. ()( j =1,2,3), l and r Representing the left and right sides, the pulverizing system's operational decisions must satisfy: (5) in, These represent the operational status of the pulverizing systems on the left and right sides of each floor. A value of 1 indicates the pulverizing system is in operation, while a value of 0 indicates the pulverizing system is not in operation. j =1,2,3, represents the number of floors. l and r Represents the left and right sides.

[0037] Coal type selection constraint refers to the constraint on the selection of coal type for two pulverizing systems arranged on the same layer. M k (excellent), M k (inferior)),( k for l or r ), M k (excellent), M k (Inferior) represents the high-quality coal and low-quality coal used in the pulverizing system, respectively. The pulverizing system with the better coal type will be prioritized for operation. (6) in, M k (excellent), M k (Inferior) represents two pulverizing systems arranged on the same floor, one using high-quality coal and the other using low-quality coal. k for l or r .

[0038] In this embodiment, the weight of combustion symmetry constraint is higher than that of coal type selection constraint, so that when there is a conflict between the operation decision selected by combustion symmetry constraint and coal type selection constraint, the operation decision selected by combustion symmetry constraint is selected.

[0039] In this embodiment, when screening according to the above constraints, firstly, based on the combustion symmetry constraint, it is determined that both the left and right pulverizing systems of the third-layer pulverizing system satisfy equation (5). Then, based on the coal type selection constraint, the final operating decision is determined to be the left pulverizing system of the third-layer pulverizing system, and it is a single operating decision. Then, the operating decision is executed.

[0040] The above-mentioned pulverizing system's operational decision-making inference engine and operational decision-making screening process can be described by the following table: Table 2. Reasoning process of the pulverizing system operation decision-making inference engine in this embodiment.

[0041] In another specific embodiment, based on the obtained unit operation data, it is determined that the unit is in the process of increasing load from 100MW to 200MW and has not yet reached the target load. Currently, there are 2 sets of pulverizing systems in operation. The first two steps are the same as the specific processes of the aforementioned steps S101 and S102. In step S103, based on the unit operating status and the established pulverizing system operation rule base and operation sequence rule base, the pulverizing system operation decision inference engine outputs an operation decision that either the left pulverizing system of the second-level pulverizing system or the right pulverizing system of the second-level pulverizing system can be started, and the coal type used is the same. Then, the right pulverizing system of the second-level system is started in the predetermined order.

[0042] Example 2 This embodiment proposes an adaptive operation decision-making system for a thermal power unit pulverizing system, including a processor and a computer-readable storage medium. The computer-readable storage medium stores a computer program, which is executed by the processor to implement the steps of the adaptive operation decision-making method for a thermal power unit pulverizing system described in Embodiment 1.

[0043] This embodiment also proposes a computer-readable storage medium storing a computer program, which, when executed by a processor, implements the steps of the adaptive operation decision-making method for the pulverizing system of a thermal power unit as described in Embodiment 1.

[0044] In summary, this invention discloses an adaptive operation decision-making method and system for a thermal power unit pulverizing system. First, it acquires the main operating data of the thermal power unit to determine its operating status. Then, it establishes an operation rule base and an operation sequence rule base for the pulverizing system. Finally, based on the unit's operating status and the established operation rule base and operation sequence rule base, it outputs an operation decision through a pulverizing system operation decision inference engine. It then determines whether multiple operation decisions are output. If not, the operation decision is executed directly; otherwise, the operation decisions are filtered, and a single operation decision is output before execution.

[0045] This invention establishes a runtime rule base that considers unit load and coal type, and a runtime sequence rule base that considers pulverizing system hierarchy and equipment health status. Through reasoning, executable runtime decisions are obtained, and further, combustion symmetry and coal type selection constraints ensure the output of a single runtime decision. This method achieves automatic determination of the runtime and sequence of the pulverizing system without relying on manual intervention, improves the automation level of pulverizing system control, and helps to enhance the wide-range load variation capability of thermal power units.

[0046] Those skilled in the art will understand that embodiments of this application can be provided as methods, systems, or computer program products. Therefore, this application can take the form of a completely hardware embodiment, a completely software embodiment, or an embodiment combining software and hardware aspects. Furthermore, this application can take the form of a computer program product embodied on one or more computer-readable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, etc.) containing computer-usable program code. This application is described with reference to flowchart illustrations and / or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of this application. It will be understood that each block of the flowchart illustrations and / or block diagrams, and combinations of blocks in the flowchart illustrations and / or block diagrams, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, special-purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create a machine for implementing the process. Figure 1 One or more processes and / or boxes Figure 1 The computer program instructions may also be stored in a computer-readable storage medium that can direct a computer or other programmable data processing device to operate in a particular manner, such that the instructions stored in the computer-readable storage medium produce an article of manufacture including instruction means, which are implemented in a process Figure 1 One or more processes and / or boxes Figure 1 The functions specified in one or more boxes. These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer-implemented process, thereby providing instructions that execute on the computer or other programmable apparatus for implementing the process. Figure 1 One or more processes and / or boxes Figure 1 The steps of the function specified in one or more boxes.

[0047] The above description is merely a preferred embodiment of the present invention. The scope of protection of the present invention is not limited to the above embodiments. All technical solutions falling within the scope of the present invention's concept are within the scope of protection of the present invention. It should be noted that for those skilled in the art, any improvements and modifications made without departing from the principles of the present invention should also be considered within the scope of protection of the present invention.

Claims

1. An adaptive operation decision-making method for a pulverizing system of a thermal power unit, characterized in that, Includes the following steps: Acquire specified operating data of thermal power units and determine the unit's operating status and the pulverizing system status based on the specified operating data; Establish a runtime rule base and a runtime sequence rule base for the flour milling system; The pulverizing system operation decision inference engine is used to make operation decisions based on the pulverizing system operation rule base, operation sequence rule base, unit operation status and pulverizing system status. Specifically, the unit operation status is matched with the operation rule base to obtain the number of pulverizing systems to be put into operation, and the unit operation status is matched with the operation sequence rule base to obtain a list of candidate pulverizing systems that meet the number of pulverizing systems to be put into operation, which is used as the operation decision. If there is only a single operational decision, then that operational decision is executed. If there are multiple operational decisions, then constraints are used to select the final operational decision from all operational decisions and execute it.

2. The adaptive operation decision-making method for the pulverizing system of a thermal power unit according to claim 1, characterized in that, The runtime rule base includes load-based runtime rules, which specifically refer to the functional relationship between unit load and the number of pulverizing systems in operation. The mathematical expression is as follows: P i ~ P i+1 = f ( N ) The above formula indicates the unit load when the pulverizing system burns the designed coal type. P i ~ P i+1 It needs to be put into operation. N A milling system, in which, P i Representing the thermal power unit i One load point, N The number of milling systems in operation. f This represents the functional relationship between the unit load and the number of pulverizing systems in operation.

3. The adaptive operation decision-making method for the pulverizing system of a thermal power unit according to claim 2, characterized in that, The runtime rule base also includes coal-type-based runtime rules. Specifically, coal-type-based runtime rules refer to rules that require operation when the coal type used in the pulverizing system differs from the designed coal type. N The mathematical expression for the load point variation of the pulverizing system is as follows: αP i ~ αP i+1 = f 1( N , Co ) In the above formula, α This means that when all pulverizing systems are used Co Coal type, requires commissioning N The coal quality correction factor at the unit load point when using a pulverizing system. f 1 is for combustion Co The functional relationship between unit load and the number of pulverizing systems in operation when different coal types are used; when the calorific value of the coal used is greater than the design coal type. α >1; otherwise, α <1.

4. The adaptive operation decision-making method for the pulverizing system of a thermal power unit according to claim 3, characterized in that, When each pulverizing system in operation uses a different type of coal, the mathematical expression for the operating timing rules based on the coal type is as follows: In the above formula, α i Represents fuel use Co i The coal quality correction factor of the coal pulverizing system at the load point. i =1,…, N ; f 2 represents the functional relationship between the unit load and the number of pulverizing systems in operation under the corresponding operating conditions.

5. The adaptive operation decision-making method for the pulverizing system of a thermal power unit according to claim 4, characterized in that, When considering the start-up time of the pulverizing system during unit load changes, the mathematical expression for the runtime rules based on coal type is as follows: In the above formula, T This indicates the time required for the powder-making system to start up. V This represents the rate of change of unit load.

6. The adaptive operation decision-making method for the pulverizing system of a thermal power unit according to claim 1, characterized in that, The operational sequence rule base includes priority rules for the low-level milling system and rules for removing unhealthy equipment, wherein: The aforementioned priority rule for the lower-level pulverizing system specifically refers to the following: when the pulverizing system needs to be put into operation as the unit load increases, under the premise that the coal quality of the pulverizing systems is the same and the equipment is in good condition, an operation sequence is established according to the principle of prioritizing the operation of the lower-level pulverizing system; otherwise, the upper-level pulverizing system is shut down first according to the established sequence. The aforementioned unhealthy equipment rejection rule specifically refers to skipping pulverizing systems that are prohibited from operation or are unhealthy from the commissioning sequence, and starting subsequent pulverizing systems according to the deduced operational decisions.

7. The adaptive operation decision-making method for the pulverizing system of a thermal power unit according to claim 1, characterized in that, The constraints include combustion symmetry constraints and coal type selection constraints, wherein: The mathematical expression for combustion symmetry constraints is as follows: in, These represent the operational status of the powder-making systems on the left and right sides of each floor. j =1,2,3 l and r Representing the left and right sides; The mathematical expression for the coal type selection constraint is as follows: in, M k (excellent), M k (Inferior) represents two pulverizing systems arranged on the same floor, one using high-quality coal and the other using low-quality coal. k for l or r .

8. The adaptive operation decision-making method for the pulverizing system of a thermal power unit according to claim 7, characterized in that, The weight of combustion symmetry constraints is higher than that of coal type selection constraints. When there is a conflict between the operational decisions selected by combustion symmetry constraints and coal type selection constraints, the operational decision selected by combustion symmetry constraints is adopted.

9. An adaptive operation decision-making system for a pulverizing system of a thermal power unit, characterized in that, The device includes a processor and a computer-readable storage medium storing a computer program, which is executed by the processor to implement the steps of the adaptive operation decision method for a pulverizing system of a thermal power unit as described in any one of claims 1 to 8.

10. A computer-readable storage medium, characterized in that, The computer-readable storage medium stores a computer program, which, when executed by a processor, implements the steps of the adaptive operation decision-making method for the pulverizing system of a thermal power unit as described in any one of claims 1 to 8.

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