Control method and device for operation of a coal-fired power plant system

Abstract

The application relates to the technical field of variable load control, in particular to a control method and device for operation of a coal-fired power plant system. The method is suitable for adjusting the output power of the coal-fired power plant in a specific time period. The method comprises the following steps: calculating a power adjustable range of high-delay auxiliary equipment in the coal-fired power plant; wherein the high-delay auxiliary equipment is auxiliary equipment whose influence on other systems in the coal-fired power plant lasts more than a preset time threshold when the running power of the high-delay auxiliary equipment is changed in the specific time period; obtaining a target output power of the coal-fired power plant; and adjusting the running power of the high-delay auxiliary equipment in the power adjustable range, so that the output power of the coal-fired power plant is reduced or increased to the target output power in the specific time period. The method provided by the application changes the proportion of plant power by changing the running power of the high-delay auxiliary equipment, changes the output power of the power plant under the condition that the power generation of the unit is unchanged, and improves the flexibility of the load following of the coal-fired power plant.

Description

Technical Field

[0001] This application relates to the field of variable load control technology, specifically to a control method for the operation of a coal-fired power plant system, a control device for the operation of a coal-fired power plant system, and a machine-readable storage medium. Background Technology

[0002] Wind and solar energy exhibit strong time-varying characteristics, making it difficult to integrate renewable energy generation. Therefore, coal-fired power plants need to frequently perform load changes to balance grid supply and demand. However, the thermal systems of coal-fired power plants are massive, and the significant delay caused by thermal inertia makes it difficult to achieve the desired rapid load changes. Summary of the Invention

[0003] The purpose of this application is to provide a control method, device, and storage medium for the operation of a coal-fired power plant system.

[0004] To achieve the above objectives, the first aspect of this application provides a control method for the operation of a coal-fired power plant system, applicable to short-term adjustment of the output power of a coal-fired power plant. The method includes: calculating the adjustable power range of high-delay auxiliary equipment in the coal-fired power plant; wherein the high-delay auxiliary equipment is an auxiliary equipment whose change of its operating power within a specific time period affects other systems in the coal-fired power plant for a time exceeding a preset time threshold; obtaining the target output power of the coal-fired power plant; and adjusting the operating power of the high-delay auxiliary equipment within the adjustable power range to reduce or increase the output power of the coal-fired power plant to the target output power within a specific time period.

[0005] Based on the first aspect, in some embodiments of this application, before adjusting the operating power of the high-delay auxiliary equipment within the power adjustable range, the method further includes: obtaining the current output power of the coal-fired power plant; calculating the difference between the target output power and the current output power; and determining whether the operating power of the high-delay auxiliary equipment needs to be increased or decreased based on the sign of the difference.

[0006] Based on the first aspect, in some embodiments of this application, the high-latency auxiliary equipment includes: a first auxiliary equipment and a second auxiliary equipment; before adjusting the operating power of the high-latency auxiliary equipment within the power adjustable range, the method further includes: determining the adjustment order of the operating power of the first auxiliary equipment and the second auxiliary equipment, specifically including: determining whether the time for the first auxiliary equipment to affect other systems is not less than that of the second auxiliary equipment; if so, then the operating power of the first auxiliary equipment is adjusted first; otherwise, the operating power of the second auxiliary equipment is adjusted first.

[0007] Based on the first aspect, in some embodiments of this application, calculating the power adjustable range of the high-latency auxiliary equipment includes: calculating the power adjustable range of the first auxiliary equipment and the second auxiliary equipment respectively, specifically including: if the current operating power of the first auxiliary equipment is W1, the upper limit of the operating power of the first auxiliary equipment is W. 1,max The lower limit of the operating power of the first auxiliary equipment is W. 1,min The adjustable power output of the first auxiliary equipment is: The adjustable power reduction of the first auxiliary equipment is: If the current operating power of the second auxiliary equipment is W2, the upper limit of the operating power of the second auxiliary equipment is W. 2,max The lower limit of the operating power of the second auxiliary equipment is W. 2,min The adjustable power output of the second auxiliary equipment is: The adjustable power reduction of the second auxiliary equipment is: .

[0008] Based on the first aspect, in some embodiments of this application, if the target output power is The current output power is The operating power of high-delay auxiliary equipment needs to be increased or decreased based on the sign of the difference, including: if... Then it is necessary to reduce the operating power of the delayed auxiliary equipment; if This necessitates increasing the operating power of the delayed auxiliary equipment.

[0009] Based on the first aspect, in some embodiments of this application, if the time for which the first auxiliary equipment affects other systems is longer than that of the second auxiliary equipment; the step of adjusting the operating power of the high-delay auxiliary equipment within the power adjustable range includes: determining... Does it meet the requirements? If so, then adjust the operating power of the first auxiliary equipment to reduce it. ;judge Does it meet the requirements? If so, then adjust the operating power of the first auxiliary equipment to increase. ;judge Does it meet the requirements? If so, first adjust the operating power of the first auxiliary equipment to reduce it. Then adjust the second auxiliary equipment to lower ( )- ;judge Does it meet the requirements? If so, first adjust the operating power of the first auxiliary equipment to increase. Then adjust the height of the second auxiliary equipment ( )- .

[0010] Based on the first aspect, in some embodiments of this application, if the first auxiliary equipment is a coal mill and the second auxiliary equipment is a condenser circulating water pump, the operating power of the coal mill is adjusted first.

[0011] Based on the first aspect, in some embodiments of this application, the high-delay auxiliary equipment further includes: a condenser fan in an indirect air-cooled system, wherein the operating power of the condenser fan is preferentially adjusted.

[0012] Secondly, this application provides a control device for the operation of a coal-fired power plant system, suitable for short-term adjustment of the output power of a coal-fired power plant. The device includes: a calculation module for calculating the adjustable power range of high-delay auxiliary equipment in the coal-fired power plant; wherein the high-delay auxiliary equipment is an auxiliary equipment whose change of its operating power within a specific time period affects other systems in the coal-fired power plant for a time exceeding a preset time threshold; an acquisition module for acquiring the target output power of the coal-fired power plant; and an adjustment module for adjusting the operating power of the high-delay auxiliary equipment within the adjustable power range, so as to reduce or increase the output power of the coal-fired power plant to the target output power within a specific time period.

[0013] Thirdly, this application provides a machine-readable storage medium storing instructions that, when executed by a processor, configure the processor to perform the aforementioned control method for operating a coal-fired power plant system.

[0014] The method provided in this application changes the power consumption ratio of the plant by altering the power consumption of high-delay equipment such as boiler coal mills and condenser circulating water pumps. This changes the output power while keeping the unit's power generation power constant. Using this method, coal-fired power plants can quickly achieve their power output targets, improve load following rate, and effectively reduce the impact of load changes on the thermal system by utilizing the time difference in the influence of various auxiliary equipment on the thermal system.

[0015] Other features and advantages of the embodiments of this application will be described in detail in the following detailed description section. Attached Figure Description

[0016] The accompanying drawings are provided to further illustrate the embodiments of this application and form part of the specification. They are used together with the following detailed description to explain the embodiments of this application, but do not constitute a limitation on the embodiments of this application. In the drawings: Figure 1 The schematic diagram illustrates a flow chart of a control method for operating a coal-fired power plant system according to an embodiment of this application; Figure 2 The diagram illustrates the internal structure of a computer device according to an embodiment of this application.

[0017] Explanation of reference numerals in the attached figures 102-Terminal; 104-Server; A01-Processor; A02-Network Interface; A03-Internal Memory; A04-Display; A05-Input Device; A06-Non-Volatile Storage Media; B01-Operating System; B02-Computer Program. Detailed Implementation

[0018] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are only for illustration and explanation of the embodiments of this application and are not intended to limit the embodiments of this application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.

[0019] It should be noted that if the embodiments of this application involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicators will also change accordingly.

[0020] Furthermore, if the embodiments of this application involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, features defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the technical solutions of various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. If the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed in this application.

[0021] Example 1 Coal-fired power plants have complex and large-capacity thermal systems with significant thermal inertia. When the power grid issues load change commands, coal-fired power plants suffer from severe delays and struggle to respond quickly. For short-term, rapid load change commands, the power plant often needs to complete the change within tens of seconds, while the equipment in the coal-fired power plant cannot operate within a specific time period. On the other hand, the plant's power consumption rate can reach 3% to 5%, representing a considerable potential for load changes. Changing the power consumption of auxiliary equipment to alter the overall power output, and then taking corrective measures before the changes in auxiliary equipment operation affect the thermal system, is a feasible method for load changing in coal-fired power plants. Therefore, this embodiment proposes a control method for the operation of a coal-fired power plant system. This method is suitable for short-term adjustment of the output power of a coal-fired power plant, and includes: S1. Calculate the adjustable power range of high-delay auxiliary equipment in a coal-fired power plant; wherein, the high-delay auxiliary equipment is an auxiliary equipment whose operation power changes within a specific time period and the time that affects other systems in the coal-fired power plant exceeds a preset time threshold. Specifically, the other systems mentioned here, in this embodiment, mainly refer to the thermal system of a coal-fired power plant, and the specific time period refers to a relatively short period of time, such as tens of seconds to a minute or within a minute.

[0022] Furthermore, to calculate the adjustable power range of high-delay auxiliary equipment, it is first necessary to determine the specific high-delay auxiliary equipment. If there is more than one (or one type) of high-delay auxiliary equipment, it is also necessary to determine their adjustment sequence and the total adjustable power range. For example, if the high-delay auxiliary equipment includes a first auxiliary equipment and a second auxiliary equipment; then: 1) Determine the adjustment sequence, specifically including: Determine whether the time it takes for the first auxiliary equipment to affect other systems is no less than that of the second auxiliary equipment. If so, prioritize adjusting the operating power of the first auxiliary equipment; otherwise, prioritize adjusting the operating power of the second auxiliary equipment. For example, if the first auxiliary equipment is a coal mill and the second auxiliary equipment is a condenser circulating water pump, since the coal mill system takes longer to affect the thermal system than the circulating water pump, the coal mill power should be adjusted first when the output power of the coal-fired power plant needs to be changed.

[0023] 2) Calculate the adjustable power range, including: Calculate the adjustable power range of the first auxiliary equipment and the second auxiliary equipment respectively, specifically including: If the current operating power of the first auxiliary equipment is W1 (MW), the upper limit of the operating power of the first auxiliary equipment is W. 1,max (MW), the lower limit of the operating power of the first auxiliary equipment is W. 1,min (MW); The adjustable power output of the first auxiliary equipment is: ; The adjustable power reduction of the first auxiliary equipment is: ; If the current operating power of the second auxiliary equipment is W2 (MW), the upper limit of the operating power of the second auxiliary equipment is W. 2,max (MW), the lower limit of the operating power of the second auxiliary equipment is W. 2,min (MW); The adjustable power output of the second auxiliary equipment is: ; The adjustable power reduction of the second auxiliary equipment is: ; In summary, the total adjustable power range of high-delay auxiliary equipment is as follows: The adjustable power output of high-delay auxiliary equipment is as follows: ; The adjustable power output of high-delay auxiliary equipment is as follows: .

[0024] S2. Obtain the target output power of the coal-fired power plant; Specifically, it is also necessary to determine the current output power. By calculating the difference between the target output power and the current output power, it is possible to determine whether the operating power of the high-delay auxiliary equipment needs to be increased or decreased based on the sign of the difference; and to determine the magnitude of the difference in the operating power that the high-delay auxiliary equipment needs to be adjusted.

[0025] 1) Determine whether the operating power of high-delay auxiliary equipment needs to be increased or decreased based on the sign of the difference, as follows: If the target output power is (MW), current output power is (MW), then: like Then it is necessary to reduce the operating power of the delayed auxiliary equipment; like This necessitates increasing the operating power of the delayed auxiliary equipment.

[0026] S3. Adjust the operating power of the high-delay auxiliary equipment within the adjustable power range to reduce or increase the output power of the coal-fired power plant to the target output power within a specific time period; Based on S2~S3 above, the specific steps for adjusting high-delay auxiliary equipment are as follows: judge Does it meet the requirements? If so, then adjust the operating power of the first auxiliary equipment to reduce it. ; judge Does it meet the requirements? If so, then adjust the operating power of the first auxiliary equipment to increase. ; judge Does it meet the requirements? If so, first adjust the operating power of the first auxiliary equipment to reduce it. Then adjust the second auxiliary equipment to lower ( )- ; judge Does it meet the requirements? If so, first adjust the operating power of the first auxiliary equipment to increase. Then adjust the height of the second auxiliary equipment ( )- .

[0027] like If the output is outside the range mentioned above, it means that the variable power output requirement cannot be achieved by adjusting the power consumption of the auxiliary equipment. In this case, the boiler-machine coordination control system can be activated, for example, by changing the water supply and coal supply to change the boiler output to achieve the variable power output requirement.

[0028] In addition, when the load change process is completed, the power of the coal mill system and circulating water pump needs to be restored to the original steady-state operating conditions. At this time, the main steam regulating valve needs to be activated to adjust the power.

[0029] Example 2 If the condenser of the coal-fired unit is an indirect air-cooled type, the time delay required for the cooling airflow to affect the thermal system is the longest (compared to the coal mill and condenser circulating water pump in Example 1). Therefore, the operating power of the condenser fan is adjusted first. The current operating power of the condenser fan is W3 (MW), and the upper limit of the operating power of the condenser fan is W. 3,max (MW), the lower limit of the operating power of the first auxiliary equipment is W. 3,min (MW); The adjustable power output of the condenser fan is: ; The adjustable amount of power reduction for the condenser fan is: ; When the target load P e (MW) and current power P 0 (MW) satisfies At this time, there is no need to adjust the power of the coal mill and circulating water pump; only the condenser fan needs to be adjusted to meet the variable load requirements. If so, adjust the condenser fan power to maximum, and then increase the power of the coal mill and circulating water pump; if If necessary, adjust the condenser fan power to the minimum, and then reduce the power of the coal mill and circulating water pump.

[0030] After the load change process is completed, the auxiliary equipment must be restored to the steady-state set conditions in sequence, in the order of coal mill and circulating water pump. If the unit uses an indirect air-cooled condenser, the condenser fan should be restored to the steady-state condition after the circulating water pump is restored to the steady-state condition.

[0031] Example 3 This embodiment provides a control device for the operation of a coal-fired power plant system, suitable for adjusting the output power of the coal-fired power plant within a specific time period. The device includes: a calculation module for calculating the adjustable power range of high-delay auxiliary equipment in the coal-fired power plant; wherein, the high-delay auxiliary equipment is an auxiliary equipment whose change of its operating power within a specific time period affects other systems in the coal-fired power plant for a time exceeding a preset time threshold; an acquisition module for acquiring the target output power of the coal-fired power plant; and an adjustment module for adjusting the operating power of the high-delay auxiliary equipment within the adjustable power range, so as to reduce or increase the output power of the coal-fired power plant to the target output power within a specific time period.

[0032] The control device for the operation of the coal-fired power plant system includes a processor and a memory. All the above-mentioned modules are stored in the memory as program units, and the processor executes the above-mentioned program modules stored in the memory to realize the corresponding functions.

[0033] The processor contains a kernel, which retrieves the corresponding program units from memory. One or more kernels can be configured, and adjusting kernel parameters enables control methods for the operation of the coal-fired power plant system.

[0034] The memory may include non-permanent memory in computer-readable media, such as random access memory (RAM) and / or non-volatile memory, such as read-only memory (ROM) or flash RAM, and the memory includes at least one memory chip.

[0035] This application provides a storage medium storing a program that, when executed by a processor, implements the control method for the operation of the aforementioned coal-fired power plant system.

[0036] In one embodiment, a computer device is provided, which may be a terminal, and its internal structure diagram may be as follows: Figure 2As shown in the figure, the computer device includes a processor A01, a network interface A02, a display screen A04, an input device A05, and a memory (not shown) connected via a system bus. The processor A01 provides computing and control capabilities. The memory includes internal memory A03 and a non-volatile storage medium A06. The non-volatile storage medium A06 stores an operating system B01 and a computer program B02. The internal memory A03 provides an environment for the operation of the operating system B01 and the computer program B02 stored in the non-volatile storage medium A06. The network interface A02 is used for communication with external terminals via a network connection. When the computer program is executed by the processor A01, it implements a control method for the operation of a coal-fired power plant system. The display screen A04 can be a liquid crystal display (LCD) or an e-ink display. The input device A05 can be a touch layer covering the display screen, buttons, a trackball, or a touchpad mounted on the computer device casing, or an external keyboard, touchpad, or mouse.

[0037] Those skilled in the art will understand that Figure 2 The structure shown is merely a block diagram of a portion of the structure related to the present application and does not constitute a limitation on the computer device to which the present application is applied. Specific computer devices may include more or fewer components than those shown in the figure, or combine certain components, or have different component arrangements.

[0038] 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-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) containing computer-usable program code.

[0039] 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, generate instructions for implementing the flowchart... Figure 1 One or more processes and / or boxes Figure 1 A device that provides the functions specified in one or more boxes.

[0040] These 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 function 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 function specified in one or more boxes.

[0041] These computer program instructions may also be loaded onto a computer or other programmable data processing equipment to cause a series of operational steps to be performed on the computer or other programmable equipment to produce a computer-implemented process, thereby providing instructions that execute on the computer or other programmable equipment 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.

[0042] In a typical configuration, a computing device includes one or more processors (CPU), input / output interfaces, network interfaces, and memory.

[0043] Memory may include non-persistent memory in computer-readable media, such as random access memory (RAM) and / or non-volatile memory, such as read-only memory (ROM) or flash RAM. Memory is an example of computer-readable media.

[0044] Computer-readable media include both permanent and non-permanent, removable and non-removable media, which can store information using any method or technology. Information can be computer-readable instructions, data structures, modules of programs, or other data. Examples of computer storage media include, but are not limited to, phase-change memory (PRAM), static random access memory (SRAM), dynamic random access memory (DRAM), other types of random access memory (RAM), read-only memory (ROM), electrically erasable programmable read-only memory (EEPROM), flash memory or other memory technologies, CD-ROM, digital versatile optical disc (DVD) or other optical storage, magnetic tape, magnetic magnetic disk storage or other magnetic storage devices, or any other non-transferable medium that can be used to store information accessible by a computing device. As defined herein, computer-readable media does not include transient computer-readable media, such as modulated data signals and carrier waves.

[0045] It should also be noted that the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus. Unless otherwise specified, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes that element.

[0046] The above are merely embodiments of this application and are not intended to limit the scope of this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the scope of the claims of this application.

Claims

1. A control method for the operation of a coal-fired power plant system, characterized in that, The method, applicable to regulating the output power of a coal-fired power plant within a specific time period, includes: Calculate the adjustable power range of high-delay auxiliary equipment in a coal-fired power plant; wherein, the high-delay auxiliary equipment is an auxiliary equipment whose operation power change within a specific time period affects other systems in the coal-fired power plant for a time exceeding a preset time threshold; Obtain the target output power of the coal-fired power plant; The operating power of high-delay auxiliary equipment can be adjusted within the adjustable power range to reduce or increase the output power of the coal-fired power plant to the target output power within a specific time period. The high-latency auxiliary equipment includes: a first auxiliary equipment and a second auxiliary equipment; before adjusting the operating power of the high-latency auxiliary equipment within the adjustable power range, the method further includes: determining the adjustment order of the operating power of the first auxiliary equipment and the second auxiliary equipment, specifically including: determining whether the time for the first auxiliary equipment to affect other systems is less than that of the second auxiliary equipment; if not, then the operating power of the first auxiliary equipment is adjusted first; if so, then the operating power of the second auxiliary equipment is adjusted first. If the high-delay auxiliary equipment includes a coal mill, a condenser circulating water pump, and a condenser fan in an indirect air-cooled system, then the operating power of the condenser fan is adjusted first, including: obtaining the current operating power, upper limit, and lower limit of the condenser fan; calculating the difference between the current operating power and the lower limit of the condenser fan to obtain the adjustable power increase of the condenser fan; calculating the difference between the upper limit and the current operating power of the condenser fan to obtain the adjustable power decrease of the condenser fan; if the adjustable power decrease of the condenser fan is ≤ [the specified value], then [the adjustment method is implemented]. If the difference between the target output power and the current output power is less than or equal to the adjustable power increase of the condenser fan, then only the operating power of the condenser fan needs to be adjusted, and there is no need to adjust the coal mill and the condenser circulating water pump; if the difference between the target output power and the current output power is less than the adjustable power decrease of the condenser fan, then the power of the condenser fan is adjusted to the maximum, and then the power of the coal mill and the circulating water pump is increased; if the difference between the target output power and the current output power is greater than the adjustable power increase of the condenser fan, then the power of the condenser fan is adjusted to the minimum, and then the power of the coal mill and the circulating water pump is decreased.

2. The control method for the operation of a coal-fired power plant system according to claim 1, characterized in that, Before adjusting the operating power of the high-delay auxiliary equipment within the adjustable power range, the method further includes: Obtain the current output power of the coal-fired power plant; Calculate the difference between the target output power and the current output power; Based on the difference, it can be determined whether the operating power of the high-delay auxiliary equipment needs to be increased or decreased.

3. The control method for the operation of a coal-fired power plant system according to claim 1, characterized in that, The power adjustable range of the high-latency auxiliary equipment includes: Calculate the adjustable power range of the first auxiliary equipment and the second auxiliary equipment respectively, specifically including: If the current operating power of the first auxiliary equipment is W1, the upper limit of the operating power of the first auxiliary equipment is W. 1,max The lower limit of the operating power of the first auxiliary equipment is W. 1,min The adjustable power output of the first auxiliary equipment is: The adjustable power reduction of the first auxiliary equipment is as follows: ; If the current operating power of the second auxiliary equipment is W2, the upper limit of the operating power of the second auxiliary equipment is W. 2,max The lower limit of the operating power of the second auxiliary equipment is W. 2,min The adjustable power output of the second auxiliary equipment is: The adjustable power reduction of the second auxiliary equipment is as follows: .

4. The control method for the operation of a coal-fired power plant system according to claim 3, characterized in that, If the target output power is The current output power is Based on the difference, it is determined whether the operating power of the high-delay auxiliary equipment needs to be increased or decreased, including: like Therefore, it is determined that the operating power of high-latency auxiliary equipment needs to be reduced; like If so, it is determined that the operating power of high-delay auxiliary equipment needs to be increased.

5. The control method for the operation of a coal-fired power plant system according to claim 4, characterized in that, If the first auxiliary equipment affects other systems for a longer period than the second auxiliary equipment, adjusting the operating power of the high-delay auxiliary equipment within the adjustable power range includes: judge Does it meet the requirements? If so, then adjust the operating power of the first auxiliary equipment to reduce it. ; judge Does it meet the requirements? If so, then adjust the operating power of the first auxiliary equipment to increase. ; judge Does it meet the requirements? If so, first adjust the operating power of the first auxiliary equipment to reduce it. Then adjust the second auxiliary equipment to lower ( )- ; judge Does it meet the requirements? If so, first adjust the operating power of the first auxiliary equipment to increase. Then adjust the height of the second auxiliary equipment ( )- .

6. The control method for the operation of a coal-fired power plant system according to claim 1, characterized in that, If the first auxiliary equipment is a coal mill and the second auxiliary equipment is a condenser circulating water pump, then the operating power of the coal mill should be adjusted first.

7. A control device for the operation of a coal-fired power plant system, characterized in that, A control method for adjusting the output power of a coal-fired power plant within a specific time period, used to achieve the operation of the coal-fired power plant system as described in any one of claims 1-6, the apparatus comprising: The calculation module is used to calculate the adjustable power range of high-delay auxiliary equipment in a coal-fired power plant; wherein, the high-delay auxiliary equipment is an auxiliary equipment whose operation power changes within a specific time period and the time that affects other systems in the coal-fired power plant exceeds a preset time threshold. The acquisition module is used to acquire the target output power of the coal-fired power plant; The adjustment module is used to adjust the operating power of high-delay auxiliary equipment within the adjustable power range, so as to reduce or increase the output power of the coal-fired power plant to the target output power within a specific time period.

8. A machine-readable storage medium storing instructions thereon, characterized in that, When executed by a processor, this instruction causes the processor to be configured to perform a control method for operating a coal-fired power plant system according to any one of claims 1 to 6.

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