Self-starting process control method and device for coal-fired power generation units

Abstract

This application relates to a self-start process control method and device for a coal-fired power generation unit. The specific solution is as follows: in response to receiving a start instruction for a target process, determine the pre-start process corresponding to the target process among multiple processes according to a preset process start sequence; obtain the operation data of the coal-fired power generation unit; based on the operation data, determine whether the pre-start process starts normally; in response to the normal start of the pre-start process, control the start of the target process; in response to at least one pre-start process not starting normally, control at least one pre-start process to start according to the preset process start sequence, and repeat the step of determining whether the pre-start process starts normally. This application improves the flexibility of starting each process of the coal-fired unit.

Description

Technical Field

[0001] This application relates to the technical field of coal-fired generators, and in particular, to a method and device for controlling the self-starting process of a coal-fired power generation unit. Background Art

[0002] In the related art, in order to achieve the function of rapid and fully automatic start-up of coal-fired power generation units, the Automatic Procedure Start-up / Shut-down (APS) of the unit program has been implemented and applied in coal-fired power generation units across the country. The units to which its functions are applied include subcritical, supercritical, and ultra-supercritical units. It includes Breakpoint One, Breakpoint Two, Breakpoint Three, Breakpoint Four, and Breakpoint Five. In the actual production process of power plants, the operating personnel manually click to start the function groups of each breakpoint in sequence to start the coal-fired unit. Breakpoint One is the unit preparation; Breakpoint Two is the boiler start-up; Breakpoint Three is the steam turbine rotation; Breakpoint Four is the unit grid connection; Breakpoint Five is the unit load increase. Its drawback is that there is no clear division of the start-up process of the coal-fired power generation unit, and it is necessary to click on each breakpoint one by one for start-up, the operation is too cumbersome, and the start-up method is too single. If the operating personnel want to achieve the goal of unit grid connection at Breakpoint Four, they must first start Breakpoint One, then start Breakpoint Two, and then complete Breakpoint Four before finally achieving Breakpoint Four. Summary of the Invention

[0003] Therefore, this application provides a method and device for controlling the self-starting process of a coal-fired power generation unit. The technical solution of this application is as follows:

[0004] According to the first aspect of the embodiments of this application, a method for controlling the self-starting process of a coal-fired power generation unit is provided. The method includes:

[0005] In response to receiving a start instruction for a target process, determine the pre-start process corresponding to the target process among multiple processes according to a preset process start sequence; wherein, the multiple processes include a unit preparation process, a boiler start-up process, a steam turbine rotation process, a unit grid connection process, and a unit load increase process; the preset process start sequence is to start the unit preparation process, the boiler start-up process, the steam turbine rotation process, the unit grid connection process, and the unit load increase process in sequence;

[0006] Obtain the operation data of the coal-fired power generation unit;

[0007] Based on the operation data, determine whether the pre-start process starts normally;

[0008] In response to the normal start of the pre-start process, control the start of the target process;

[0009] In response to at least one pre-start process not starting properly, control the at least one pre-start process to start according to the preset process start sequence, and repeat the step of determining whether the pre-start process starts properly.

[0010] According to an embodiment of the present application, the start steps of the unit preparation process include:

[0011] Control the boiler water filling function group and the boiler cleaning function group to start simultaneously, and sequentially control the start of the flue gas system, the flame detector cooling fan, and the plasma preparation system;

[0012] Sequentially control the start of the boiler drain and exhaust function group and the steam turbine drain function group.

[0013] According to an embodiment of the present application, the start steps of the boiler start process include:

[0014] In response to the normal start of the unit preparation process, respectively control the feed water system function group and the steam turbine bypass system to enter the automatic state;

[0015] Simultaneously control the furnace to be purged, control the coal pulverizing system to enter the ready-to-start state, and control the primary air damper to enter the automatic state;

[0016] Control the first layer of plasma to warm the first coal mill to start, and simultaneously control the first coal mill and the condenser desuperheating system to be put into operation, and sequentially control the start of the boiler heating and pressure increasing system and the boiler hot state flushing system to complete the control of the start of the first coal mill and the flushing of the boiler.

[0017] According to an embodiment of the present application, the start steps of the steam turbine turning process include:

[0018] In response to the normal start of both the unit preparation process and the boiler start process, control the steam turbine to start turning, control the steam turbine lubricating oil temperature system to enter the automatic control mode, control the medium pressure cylinder to enter the elevated system, and control the start of the low pressure heaters on the steam turbine side;

[0019] Control the second layer of plasma to warm the second coal mill, and control the second coal mill to start.

[0020] According to an embodiment of the present application, the start steps of the unit grid connection process include:

[0021] In response to the normal start of the unit preparation process, the boiler start process, and the steam turbine turning process, control the generator to be connected to the grid, and simultaneously control the initial load warming DEH system to cut the cylinder and control the steam feed pump to start running.

[0022] According to an embodiment of the present application, the start steps of the unit load increase process include:

[0023] In response to the normal startup of the unit preparation process, the boiler startup process, the turbine turning process, and the unit grid connection process, simultaneously control the startup of the high-pressure heater system on the turbine side and the steam source of the deaerator to be switched to the four-extraction system, and control the startup of the automatic turbine control system;

[0024] Control the unit to increase the load to the first preset load value, control the switching of the feed water pipeline to the main path of the feed water system, and control the operating state of the unit to change from the wet state to the dry state; control the unit to increase the load to the second preset load value;

[0025] Sequentially control the startup of the third coal mill and the denitration system, and control the unit to increase the load to the third preset load value;

[0026] Control the startup of the fourth coal mill and the fourth and fifth coal mills, control the unit to enter the coordinated control mode, control the plasma system to stop running, and control the unit to increase the load to the target load value, thereby completing the self-startup process of the coal-fired power generation unit.

[0027] According to an embodiment of the present application, determining whether the pre-startup process starts normally based on the operation data includes:

[0028] Based on the preset process startup sequence, obtain the current operation data corresponding to the current pre-startup process;

[0029] Determine whether the current pre-startup process starts normally based on the current operation data;

[0030] In response to the normal startup of the current pre-startup process, obtain the current operation data corresponding to the next pre-startup process according to the preset process startup sequence, and repeat the step of determining whether the current pre-startup process starts normally based on the current operation data;

[0031] In response to the abnormal startup of the current pre-startup process, determine that the pre-startup process does not start normally.

[0032] According to an embodiment of the present application, the state where the pre-startup process does not start normally includes an abnormal operation state and a non-started state.

[0033] According to a second aspect of the embodiments of the present application, there is provided a control device for the self-startup process of a coal-fired power generation unit, and the device includes:

[0034] A first determination module, configured to, in response to receiving a startup instruction for a target process, determine the pre-startup process corresponding to the target process among multiple processes according to a preset process startup sequence; wherein, the multiple processes include a unit preparation process, a boiler startup process, a turbine turning process, a unit grid connection process, and a unit load increase process; the preset process startup sequence is to sequentially start the unit preparation process, the boiler startup process, the turbine turning process, the unit grid connection process, and the unit load increase process;

[0035] An acquisition module, configured to acquire the operation data of a coal-fired power generation unit;

[0036] A second determination module, configured to determine whether the pre-start process is normally started based on the operation data;

[0037] A first control module, configured to control the start of the target process in response to the normal start of the pre-start process;

[0038] A second control module, configured to control the at least one pre-start process to start according to the preset process start sequence in response to at least one pre-start process not being normally started, and repeatedly execute the step of determining whether the pre-start process is normally started.

[0039] According to a third aspect of the embodiments of the present application, there is provided an electronic device, including: a processor, and a memory communicatively connected to the processor;

[0040] The memory stores computer-executable instructions;

[0041] The processor executes the computer-executable instructions stored in the memory to implement the method according to any one of the first aspects.

[0042] The technical solutions provided by the embodiments of the present application at least bring the following beneficial effects:

[0043] By responding to the received start instruction of the target process, determining the pre-start process corresponding to the target process among multiple processes according to the preset process start sequence; acquiring the operation data of the coal-fired power generation unit; determining whether the pre-start process is normally started based on the operation data; controlling the start of the target process in response to the normal start of the pre-start process; controlling the at least one pre-start process to start according to the preset process start sequence in response to at least one pre-start process not being normally started, and repeatedly executing the step of determining whether the pre-start process is normally started, thereby realizing the automatic selection of multiple processes based on the instruction, and further solving the problems of cumbersome start-up process, many start-up processes, and many manual confirmation steps of the coal-fired power generation unit, and realizing the flexible start of each process of the coal-fired power generation unit.

[0044] It should be understood that the above general description and the following detailed description are only exemplary and explanatory, and cannot limit the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0045] The drawings here are incorporated into the specification and constitute a part of this specification, showing embodiments consistent with the present application, and are used together with the specification to explain the principles of the present application, and do not constitute an improper limitation of the present application.

[0046] Figure 1It is a flowchart of a method for controlling the self-starting process of a coal-fired power generation unit in an embodiment of the present application;

[0047] Figure 2 It is a structural block diagram of a device for controlling the self-starting process of a coal-fired power generation unit in an embodiment of the present application;

[0048] Figure 3 It is a block diagram of an electronic device in an embodiment of the present application. Detailed implementation manners

[0049] In order to enable those of ordinary skill in the art to better understand the technical solutions of the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings.

[0050] It should be noted that in the specification and claims of the present application and the above-mentioned accompanying drawings, terms such as "first" and "second" are used to distinguish similar objects, and do not necessarily need to describe a specific order or sequence. It should be understood that such used data can be interchanged under appropriate circumstances so that the embodiments of the present application described herein can be implemented in an order different from those illustrated or described herein. The implementation manners described in the following exemplary embodiments do not represent all implementation manners consistent with the present application. On the contrary, they are only examples of devices and methods consistent with some aspects of the present application as detailed in the appended claims.

[0051] It should be noted that in the related art, in order to realize the fully automatic function of the rapid start-up of the coal-fired power generation unit, the Automatic Procedure Start-up / Shut-down (APS) of the unit program has been implemented and applied in coal-fired power generation units across the country. The units to which its functions are applied include subcritical, supercritical, and ultra-supercritical units. It includes breakpoint one, breakpoint two, breakpoint three, breakpoint four, and breakpoint five. In the actual production process of the power plant, the operator manually clicks to start the function groups of each breakpoint in turn to realize the start-up of the coal-fired unit. Breakpoint one is the unit preparation; breakpoint two is the boiler start-up; breakpoint three is the turbine impulse; breakpoint four is the unit grid connection; breakpoint five is the unit load increase. Its drawback is that there is no clear division of the start-up process of the coal-fired power generation unit, and it is necessary to click and operate each breakpoint one by one to start, the operation is too cumbersome, and the start-up method is too single. If the operator wants to achieve the goal of unit grid connection at breakpoint four, he must first start breakpoint one, then start breakpoint two, and then complete breakpoint four before finally achieving breakpoint four.

[0052] Based on the above problems, the present application proposes a method and device for controlling the self-start process of a coal-fired power generation unit, which can achieve determining a pre-start process corresponding to a target process among multiple processes according to a preset process start sequence in response to receiving a start instruction for the target process; obtaining operation data of the coal-fired power generation unit; determining whether the pre-start process starts normally based on the operation data; controlling the start of the target process in response to the normal start of the pre-start process; and controlling at least one pre-start process to start according to the preset process start sequence in response to at least one pre-start process not starting normally, and repeating the step of determining whether the pre-start process starts normally. Thus, automatic selection of multiple processes based on instructions is achieved, and furthermore, the problems of cumbersome start-up process, many start-up processes, and many manual confirmation steps in the start-up process of coal-fired power generation units are solved, and flexible start-up of each process of the coal-fired power generation unit is realized.

[0053] Figure 1 It is a flowchart of a method for controlling the self-start process of a coal-fired power generation unit in an embodiment of the present application.

[0054] As Figure 1 shown, the method for controlling the self-start process of the coal-fired power generation unit includes:

[0055] Step 101, in response to receiving a start instruction for a target process, determine a pre-start process corresponding to the target process among multiple processes according to a preset process start sequence.

[0056] Among them, in an embodiment of the present application, the multiple processes include a unit preparation process, a boiler start process, a steam turbine turning process, a unit grid connection process, and a unit load increase process.

[0057] Among them, in an embodiment of the present application, the preset process start sequence is to start the unit preparation process, the boiler start process, the steam turbine turning process, the unit grid connection process, and the unit load increase process in sequence.

[0058] As a possible example, in response to receiving any one of a start instruction for the unit preparation process, a start instruction for the boiler start process, a start instruction for the steam turbine turning process, a start instruction for the unit grid connection process, and a start instruction for the unit load increase process, according to the preset process start sequence, that is, starting the unit preparation process, the boiler start process, the steam turbine turning process, the unit grid connection process, and the unit load increase process in sequence, determine the target process in the start instruction, and determine the process sorted before the target process as the pre-start process.

[0059] For example, in response to receiving a start instruction for the steam turbine turning process, according to the preset process start sequence, determine the pre-start processes as the unit preparation process and the boiler start process.

[0060] Step 102, obtain operation data of the coal-fired power generation unit.

[0061] Step 103: Determine whether the pre-start process starts normally based on the operation data.

[0062] Among them, in some embodiments of the present application, Step 103 includes:

[0063] Step a1: Obtain the current operation data corresponding to the current pre-start process based on the preset process start sequence.

[0064] Step a2: Determine whether the current pre-start process starts normally based on the current operation data.

[0065] Step a3: In response to the normal start of the current pre-start process, obtain the current operation data corresponding to the next pre-start process according to the preset process start sequence, and repeat the step of determining whether the current pre-start process starts normally.

[0066] Step a4: In response to the abnormal start of the current pre-start process, determine that the pre-start process does not start normally.

[0067] For example, if the current pre-start processes are the unit preparation process and the boiler start process, according to the preset process start sequence, first obtain the first current operation data corresponding to the unit preparation process, determine whether the unit preparation process starts normally based on the first current operation data. If the unit preparation process starts normally, obtain the second current operation data corresponding to the boiler start process, and determine whether the boiler start process starts normally based on the second current operation data. If the boiler start process starts normally, start the target process, that is, start the turbine turning process. If the unit preparation process does not start normally, control the unit preparation process, the boiler start process, and the turbine turning process to start in sequence. If the unit preparation process starts normally and the boiler start process does not start normally, control the boiler start process and the turbine turning process to start in sequence.

[0068] It can be understood that by controlling the start of the coal-fired power generation unit through the above method, it is possible to automatically select multiple processes based on instructions, thereby solving the problems of cumbersome start-up process, many start-up processes, and many manual confirmation steps of the coal-fired power generation unit, and achieving the goal of flexibly starting each process of the coal-fired unit.

[0069] In some embodiments of the present application, the state where the pre-start process does not start normally includes the abnormal operation state and the non-start state.

[0070] Step 104: In response to the normal start of the pre-start process, control the start of the target process.

[0071] Step 105: In response to at least one pre-start process not starting normally, control at least one pre-start process to start according to the preset process start sequence, and repeat the step of determining whether the pre-start process starts normally.

[0072] In some embodiments of the present application, the startup steps of the unit preparation process include:

[0073] Control the boiler water filling function group and the boiler cleaning function group to start simultaneously, and sequentially control the start of the air and flue gas system, the flame detector cooling fan, and the plasma preparation system; sequentially control the start of the boiler drain and exhaust function group and the turbine drain function group.

[0074] It should be noted that controlling the boiler water filling function group and the boiler cleaning function group to start simultaneously improves the startup efficiency.

[0075] In some embodiments of the present application, the startup steps of the boiler startup process include:

[0076] Step b1, in response to the normal startup of the unit preparation process, respectively control the feed water system function group and the turbine bypass system to enter the automatic state;

[0077] Step b2, simultaneously control the furnace to be purged, control the coal pulverizing system to enter the ready-to-start state, and control the coal mill damper to enter the automatic state;

[0078] It should be noted that simultaneously controlling the furnace to be purged and controlling the coal pulverizing system to enter the ready-to-start state improves the startup efficiency.

[0079] Step b3, control the first layer of plasma to warm the first coal mill to start, and simultaneously control the first coal mill and the condenser desuperheating system to be put into operation, and sequentially control the startup of the boiler heating and pressure increasing system and the boiler hot state flushing system to complete the control of the startup of the first coal mill and the flushing of the boiler.

[0080] It should be noted that simultaneously controlling the first coal mill and the condenser desuperheating system to be put into operation improves the startup efficiency.

[0081] In some embodiments of the present application, the startup steps of the turbine turning process include:

[0082] Step c1, in response to the normal startup of both the unit preparation process and the boiler startup process, control the turbine to start turning, control the turbine lubricating oil temperature system to enter the automatic control mode, control the medium pressure cylinder to be put into the elevated system, and control the startup of the low pressure heaters on the turbine side;

[0083] Step c2, control the second layer of plasma to warm the second coal mill, and control the second coal mill to start.

[0084] In some embodiments of the present application, the startup steps of the unit grid connection process include:

[0085] In response to the normal startup of the unit preparation process, the boiler startup process, and the turbine turning process, control the generator to be connected to the grid, and at the same time control the cylinder cutting of the initial load warming DEH system and control the steam pump to start running.

[0086] It should be noted that controlling the cylinder cutting of the initial load warming DEH system and controlling the steam pump to start running at the same time improves the startup efficiency.

[0087] In some embodiments of the present application, the startup steps of the unit load increase process include:

[0088] Step d1, in response to the normal startup of the unit preparation process, the boiler startup process, the turbine turning process, and the unit grid connection process, at the same time control the startup of the high-pressure heater system on the turbine side and the steam source of the deaerator to be switched to the four-extraction system, and control the startup of the turbine automatic system;

[0089] It should be noted that controlling the startup of the high-pressure heater system on the turbine side and the steam source of the deaerator to be switched to the four-extraction system at the same time improves the startup efficiency.

[0090] Step d2, control the unit to increase the load to the first preset load value, control the feed water pipeline to be switched to the main path of the feed water system, and control the operating state of the unit to change from the wet state to the dry state; control the unit to increase the load to the second preset load value;

[0091] Step d3, sequentially control the startup of the third coal mill and the denitration system, and control the unit to increase the load to the third preset load value;

[0092] Step d4, control the startup of the fourth coal mill and the fourth and fifth coal mills, control the unit to enter the coordinated control mode, control the plasma system to stop running, and control the unit to increase the load to the target load value, thereby completing the self-startup process of the coal-fired power generation unit.

[0093] According to the control method for the self-startup process of the coal-fired power generation unit in the embodiments of the present application, by responding to the received startup instruction of the target process, according to the preset process startup sequence, determine the pre-startup process corresponding to the target process among multiple processes; obtain the operation data of the coal-fired power generation unit; based on the operation data, determine whether the pre-startup process starts normally; in response to the normal startup of the pre-startup process, control the target process to start; in response to at least one pre-startup process not starting normally, control at least one pre-startup process to start according to the preset process startup sequence, and repeat the step of determining whether the pre-startup process starts normally. Thus, the automatic selection of multiple processes based on the instruction is realized, and further solves the problems of cumbersome startup process, many startup processes, and many manual confirmation steps of the coal-fired power generation unit, and realizes the flexible startup of each process of the coal-fired power generation unit.

[0094] Figure 2 It is a structural block diagram of a control device for the self-startup process of a coal-fired power generation unit in the embodiments of the present application.

[0095] As Figure 2 shown, the self-starting process control device for a coal-fired power generation unit includes:

[0096] A first determination module 201, configured to, in response to receiving a start instruction for a target process, determine a pre-start process corresponding to the target process among multiple processes according to a preset process start sequence.

[0097] Wherein, in the embodiments of the present application, the multiple processes include a unit preparation process, a boiler start process, a steam turbine rotation process, a unit grid connection process, and a unit load increase process; the preset process start sequence is to sequentially start the unit preparation process, the boiler start process, the steam turbine rotation process, the unit grid connection process, and the unit load increase process;

[0098] An acquisition module 202, configured to acquire operation data of the coal-fired power generation unit;

[0099] A second determination module 203, configured to determine whether the pre-start process starts normally based on the operation data;

[0100] A first control module 204, configured to control the start of the target process in response to the normal start of the pre-start process;

[0101] A second control module 205, configured to, in response to at least one pre-start process not starting normally, control at least one pre-start process to start according to the preset process start sequence, and repeatedly execute the step of determining whether the pre-start process starts normally.

[0102] According to the self-starting process control device for a coal-fired power generation unit in the embodiments of the present application, by responding to receiving a start instruction for a target process, determining a pre-start process corresponding to the target process among multiple processes according to a preset process start sequence; acquiring operation data of the coal-fired power generation unit; determining whether the pre-start process starts normally based on the operation data; controlling the start of the target process in response to the normal start of the pre-start process; and in response to at least one pre-start process not starting normally, controlling at least one pre-start process to start according to the preset process start sequence and repeatedly executing the step of determining whether the pre-start process starts normally. Thus, automatic selection of multiple processes based on an instruction is achieved, and furthermore, the problems of cumbersome start-up process, many start-up processes, and many manual confirmation steps in a coal-fired power generation unit are solved, and flexible start-up of each process of the coal-fired power generation unit is realized.

[0103] Figure 3 It is a block diagram of an electronic device in the embodiments of the present application. As Figure 3 shown, the electronic device may include: a transceiver 31, a processor 32, and a memory 33.

[0104] The processor 32 executes computer-executable instructions stored in the memory, enabling the processor 32 to execute the solutions in the above embodiments. The processor 32 may be a general-purpose processor, including a central processing unit (CPU), a network processor (NP), etc.; it may also be a digital signal processor (DSP), an application-specific integrated circuit (ASIC), a field-programmable gate array (FPGA), or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components.

[0105] The memory 33 is connected to the processor 32 through the system bus and completes communication therebetween. The memory 33 is used to store computer program instructions.

[0106] The transceiver 31 can be used to obtain the task to be run and the configuration information of the task to be run.

[0107] The system bus can be a peripheral component interconnect (PCI) bus, an extended industry standard architecture (EISA) bus, etc. The system bus can be divided into an address bus, a data bus, a control bus, etc. For the sake of simplicity, only a thick line is shown in the figure, but it does not mean that there is only one bus or one type of bus. The transceiver is used to implement communication between the database access device and other computers (such as clients, read-write libraries, and read-only libraries). The memory may include a random access memory (RAM), and may also include a non-volatile memory.

[0108] The electronic device provided by the embodiments of the present application may be the terminal device in the above embodiments.

[0109] The embodiments of the present application further provide a chip for running instructions. The chip is used to execute the technical solution of the message processing method in the above embodiments.

[0110] The embodiments of the present application further provide a computer-readable storage medium. Computer instructions are stored in the computer-readable storage medium. When the computer instructions are run on a computer, the computer is enabled to execute the technical solution of the message processing method in the above embodiments.

[0111] The embodiments of the present application further provide a computer program product. The computer program product includes a computer program, which is stored in a computer-readable storage medium. At least one processor can read the computer program from the computer-readable storage medium. When at least one processor executes the computer program, the technical solution of the message processing method in the above embodiments can be implemented.

[0112] Other embodiments of the present application will be readily contemplated by those skilled in the art upon consideration of the specification and practice of the invention disclosed herein. The present application is intended to cover any variations, uses, or adaptations of the present application, which follow the general principles of the present application and include the common general knowledge or conventional technical means in the technical field not disclosed in the present application. The specification and examples are only to be considered as exemplary, and the true scope and spirit of the present application are pointed out by the following claims.

[0113] It should be understood that the present application is not limited to the exact structures described above and shown in the drawings, and various modifications and changes can be made without departing from its scope. The scope of the present application is only limited by the appended claims.

Claims

1. A self-starting process control method for a coal-fired power generation unit, characterized in that, The method includes: In response to receiving a start instruction for a target process, determining a pre-start process corresponding to the target process among multiple processes according to a preset process start sequence; wherein, the multiple processes include a unit preparation process, a boiler startup process, a steam turbine rotation startup process, a unit grid connection process, and a unit load increase process; the preset process start sequence is to start the unit preparation process, the boiler startup process, the steam turbine rotation startup process, the unit grid connection process, and the unit load increase process in sequence; wherein, the processes sorted before the target process are determined as pre-start processes; Obtaining operation data of a coal-fired power generation unit; Based on the operation data, determining whether the pre-start process starts normally; In response to the normal start of the pre-start process, controlling the start of the target process; In response to at least one pre-start process not starting normally, controlling the at least one pre-start process to start according to the preset process start sequence, and repeating the step of determining whether the pre-start process starts normally.

2. The method according to claim 1, characterized in that, The startup steps of the unit preparation process include: Controlling the boiler water filling function group and the boiler cleaning function group to start simultaneously, and sequentially controlling the air and flue gas system, the flame detection cooling fan, and the plasma preparation system to start; Sequentially controlling the boiler drain and exhaust function group and the steam turbine drain function group to start.

3. The method according to claim 1, characterized in that, The startup steps of the boiler startup process include: In response to the normal start of the unit preparation process, respectively controlling the feed water system function group and the steam turbine bypass system to enter the automatic state; Simultaneously controlling the furnace to be purged, controlling the coal pulverizing system to enter the ready-to-start state, and controlling the coal mill damper to enter the automatic state; Controlling the first layer of plasma to warm the first coal mill to start, and simultaneously controlling the first coal mill and the condenser desuperheating system to be put into operation, and sequentially controlling the boiler temperature and pressure increase system and the boiler hot state flushing system to start to complete the control of starting the first coal mill and flushing the boiler.

4. The method according to claim 1, wherein The startup steps of the steam turbine rotation startup process include: In response to the normal start of both the unit preparation process and the boiler startup process, controlling the steam turbine to start rotating, controlling the steam turbine lubricating oil temperature system to enter the automatic control mode, controlling the medium pressure cylinder to be put into the elevated system, and controlling the steam turbine side low pressure heater system to start; Controlling the second layer of plasma to warm the second coal mill, and controlling the second coal mill to start.

5. The method according to claim 1, wherein The startup steps of the unit grid connection process include: In response to the normal start of the unit preparation process, the boiler startup process, and the steam turbine rotation startup process, controlling the generator to be connected to the grid, and simultaneously controlling the initial load warm-up DEH system to cut the cylinder and controlling the steam feed pump to start running.

6. The method according to claim 1, wherein The startup steps of the unit load increase process include: In response to the normal start of the unit preparation process, the boiler startup process, the steam turbine rotation startup process, and the unit grid connection process, simultaneously controlling the steam turbine side high pressure heater system and the deaerator steam source to be switched to the four-stage extraction system to start, and controlling the steam turbine to be put into the automatic system to start; Controlling the unit to increase the load to a first preset load value, controlling the feed water pipeline to be switched to the main path of the feed water system, and controlling the operation state of the unit to change from the wet state to the dry state; controlling the unit to increase the load to a second preset load value; Sequentially controlling the third coal mill and the denitration system to start, and controlling the unit to increase the load to a third preset load value; Control the start of the fourth coal mill and the fourth and fifth coal mills, control the unit to enter the coordinated control mode, control the plasma system to stop running, and control the unit to increase the load to the target load value, so as to complete the self-starting process of the coal-fired power generation unit.

7. The method according to claim 1, characterized in that, Based on the operation data, determining whether the pre-start process starts normally includes: Obtaining the current operation data corresponding to the current pre-start process based on the preset process start sequence; Determining whether the current pre-start process starts normally based on the current operation data; In response to the normal start of the current pre-start process, obtaining the current operation data corresponding to the next pre-start process according to the preset process start sequence, and repeating the step of determining whether the current pre-start process starts normally based on the current operation data; In response to the abnormal start of the current pre-start process, determining that the pre-start process does not start normally.

8. The method according to claim 1, characterized in that, The state where the pre-start process does not start normally includes an abnormal operation state and a non-start state.

9. A self-starting process control device for a coal-fired power generation unit, characterized in that, The device includes: A first determination module, configured to, in response to receiving a start instruction for a target process, determine the pre-start process corresponding to the target process among multiple processes according to a preset process start sequence; wherein, the multiple processes include a unit preparation process, a boiler start process, a steam turbine turning process, a unit grid connection process, and a unit load increase process; the preset process start sequence is to sequentially start the unit preparation process, the boiler start process, the steam turbine turning process, the unit grid connection process, and the unit load increase process; wherein, the processes sorted before the target process are determined as pre-start processes; An acquisition module, configured to acquire the operation data of the coal-fired power generation unit; A second determination module, configured to determine whether the pre-start process starts normally based on the operation data; A first control module, configured to control the start of the target process in response to the normal start of the pre-start process; A second control module, configured to, in response to at least one pre-start process not starting normally, control the at least one pre-start process to start according to the preset process start sequence, and repeat the step of determining whether the pre-start process starts normally.

10. An electronic device, characterized in that, including: A processor, and a memory communicatively connected to the processor; The memory stores computer execution instructions; The processor executes the computer execution instructions stored in the memory to implement the method according to any one of claims 1-8.

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