Gas-steam combined cycle unit starting process control method and device

Abstract

The application relates to a gas-steam combined cycle unit starting process control method and device. The specific scheme is as follows: in response to receiving a starting instruction of a gas-steam combined cycle unit, a target process is determined based on the starting instruction; based on a preset process sequence, a target preparation process corresponding to the target process is determined; the current running state of the target preparation process is determined in sequence according to the preset process sequence; in response to the current state of at least one target preparation process being an abnormal running state or a non-running state, the starting of the at least one target preparation process and the target process is controlled in sequence according to the preset process sequence; and in response to the current running state of the target preparation process being a normal running state, the starting of the target process is controlled. The application effectively improves the starting efficiency of the gas-steam combined cycle unit.

Description

Technical Field

[0001] This application relates to the field of gas-steam combined cycle unit technology, and in particular to a method and apparatus for controlling the start-up process of a gas-steam combined cycle unit. Background Technology

[0002] In related technologies, to achieve fully automatic rapid start-up of gas-steam combined cycle units, Automatic Procedure Start-up / Shut-down (APS) has been implemented and applied in various gas-steam combined cycle units nationwide. This includes breakpoints one, two, three, and four, which operators manually activate sequentially to start and stop the unit. Breakpoint one prepares for system startup; breakpoint two involves boiler water filling and turbine vacuuming; breakpoint three initiates unit startup; and breakpoint four shuts down the unit. Its drawback is the lack of clear division of the startup process for the gas-steam combined cycle unit and the cumbersome operation. If operators want to achieve the goal of starting the unit at breakpoint three, they must first activate breakpoint one, then breakpoint two, and finally breakpoint three. Summary of the Invention

[0003] Therefore, this application provides a method and apparatus for controlling the start-up process of a gas-steam combined cycle unit. The technical solution of this application is as follows:

[0004] According to a first aspect of the embodiments of this application, a method for controlling the start-up process of a gas-steam combined cycle unit is provided, the method comprising:

[0005] In response to receiving a start-up command for a gas-steam combined cycle unit, a target process is determined based on the start-up command; wherein, the target process includes the unit preparation process, the gas turbine start-up process, the steam turbine start-up and grid connection process, and the unit load increase process;

[0006] Based on a preset process sequence, the target preparation process corresponding to the target process is determined; wherein, the preset process sequence is that the unit preparation process, gas turbine start-up process, steam turbine grid connection process, and unit load increase process are started sequentially.

[0007] The current running status of the target preparation process is determined sequentially according to the preset process order; the current running status includes abnormal running status, normal running status, and non-running status;

[0008] In response to the fact that the current state of at least one target preparation process is an abnormal running state or a non-running state, the at least one target preparation process and the target process are started sequentially according to the preset process order;

[0009] In response to the target preparation process being in a normal running state, the target process is controlled to start.

[0010] According to one embodiment of this application, determining the current running state of the target preparation process sequentially according to the preset process order includes:

[0011] According to the preset process order, for each target preparation process, obtain the historical running data of the target preparation process;

[0012] Based on the historical running data, the current running status of the target preparation process is determined.

[0013] According to one embodiment of this application, the initiation step of the unit preparation process includes:

[0014] Obtain the current forebay liquid level data;

[0015] In response to the current forebay liquid level data meeting the preset requirements, the circulating water system and the open water system are started sequentially.

[0016] Obtain the current demineralized water pressure data;

[0017] In response to the current demineralized water pressure data meeting the preset requirements, the closed-loop water filling function group, closed-loop water system, air compressor system, turbine lubricating oil system, turbine jacking oil turning gear system, and turbine EH oil system are started sequentially.

[0018] Obtain current natural gas pressure data;

[0019] In response to the current natural gas pressure data meeting the preset requirements, the boiler water supply system, boiler system function group, and auxiliary steam system function group are started sequentially.

[0020] Obtain the current compressed air pressure data;

[0021] In response to the current compressed air pressure data meeting the preset requirements, the condenser water supply function group, condensate function group, and low-pressure steam drum water supply function group are started in sequence.

[0022] The turbine shaft sealing system and the turbine vacuum system are started sequentially.

[0023] Simultaneously activate the low-pressure deaerator heating function group, the medium-pressure steam drum water supply function group, and the high-pressure steam drum water supply function group.

[0024] Start the waste heat boiler flue gas duct function group, control the waste heat boiler drain interlock to engage, and control the turbine drain interlock to engage.

[0025] According to one embodiment of this application, the initiation steps of the gas turbine start-up process include:

[0026] In response to the completion of the unit preparation process and startup, it is determined whether the pressure regulating station pressure meets the preset conditions, whether the gas turbine startup meets the preset conditions, and whether the waste heat boiler gas turbine startup meets the preset conditions.

[0027] In response to the preset conditions being met by the pressure regulating station, gas turbine startup, and waste heat boiler gas turbine startup, the gas turbine ignition and speed-up function group is activated.

[0028] The high-pressure steam drum heating and pressurization function group, the medium-pressure steam drum heating and pressurization function group, and the low-pressure steam drum heating and pressurization function group are activated simultaneously.

[0029] The generator is started and connected to the grid in sequence, the preheater recirculation function group is started, and the gas turbine temperature matching control is automatically activated.

[0030] According to one embodiment of this application, the initiation steps of the turbine commissioning and grid connection process include:

[0031] In response to the completion of the gas turbine startup process, the steam turbine start-up function group, the SSS clutch engagement function group, and the DEH engagement pressure control function group are started in sequence, and the gas-steam combined cycle unit is started.

[0032] According to a second aspect of the embodiments of this application, a gas-steam combined cycle unit start-up process control device is provided, the device comprising:

[0033] The first determining module is used to determine the target process based on the received start-up command of the gas-steam combined cycle unit; wherein, the target process includes the unit preparation process, the gas turbine start-up process, the steam turbine start-up and grid connection process, and the unit load increase process.

[0034] The second determining module is used to determine the target preparation process corresponding to the target process based on a preset process sequence; wherein, the preset process sequence is that the unit preparation process, gas turbine start-up process, steam turbine grid connection process, and unit load increase process are started sequentially.

[0035] The third determining module is used to determine the current running status of the target preparation process in the preset process order; the current running status includes abnormal running status, normal running status and non-running status;

[0036] The first control module is used to respond to the fact that the current state of at least one target preparation process is an abnormal running state or a non-running state, and to control the start of the at least one target preparation process and the target process in the preset process order.

[0037] The second control module is used to control the target process to start in response to the target preparation process being in a normal running state.

[0038] According to one embodiment of this application, the third determining module includes:

[0039] The acquisition submodule is used to acquire the historical running data of each target preparation process according to the preset process order.

[0040] The determination submodule is used to determine the current running status of the target preparation process based on the historical running data.

[0041] According to a third aspect of the embodiments of this application, an electronic device is provided, including: a processor, and a memory communicatively connected to the processor;

[0042] The memory stores computer-executed instructions;

[0043] The processor executes computer execution instructions stored in the memory to implement the method as described in any one of the first aspects.

[0044] According to a fourth aspect of the embodiments of this application, a computer-readable storage medium is provided, wherein computer-executable instructions are stored therein, which, when executed by a processor, are used to implement the method as described in any one of the first aspects.

[0045] According to a fifth aspect of the embodiments of this application, a computer program product is provided, including a computer program that, when executed by a processor, implements the method described in any one of the first aspects.

[0046] The technical solutions provided by the embodiments of this application bring at least the following beneficial effects:

[0047] By responding to the received start-up command of the gas-steam combined cycle unit, the system determines the target process based on the start-up command; determines the target preparation process corresponding to the target process based on a preset process sequence; sequentially determines the current operating status of the target preparation processes according to the preset process sequence; responding to at least one target preparation process being in an abnormal or non-operating state, it controls at least one target preparation process and the target process to start sequentially according to the preset process sequence; responding to a target preparation process being in a normal operating state, it controls the target process to start. This allows for the start-up of any process in the preset process sequence while ensuring that all target preparation processes are operating normally before starting that process. Furthermore, it enables flexible process start-up based on the current unit status, grid-side dispatch information, daily power generation, and daily natural gas consumption, solving the problem of not being able to freely select the start-up process during previous automatic unit start-up and shutdown procedures, which required re-performing the automatic start-up and shutdown procedures each time, effectively saving time and costs.

[0048] It should be understood that the above general description and the following detailed description are exemplary and explanatory only, and do not limit this application. Attached Figure Description

[0049] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this application and, together with the description, serve to explain the principles of this application, and do not constitute an undue limitation of this application.

[0050] Figure 1 This is a flowchart of a gas-steam combined cycle unit start-up process control method according to an embodiment of this application;

[0051] Figure 2 This is a structural block diagram of a gas-steam combined cycle unit start-up process control device according to an embodiment of this application;

[0052] Figure 3 This is a block diagram of an electronic device according to an embodiment of this application. Detailed Implementation

[0053] To enable those skilled in the art to better understand the technical solutions of this application, the technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings.

[0054] It should be noted that the terms "first," "second," etc., used in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of this application described herein can be implemented in orders other than those illustrated or described herein. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with this application. Rather, they are merely examples of apparatuses and methods consistent with some aspects of this application as detailed in the appended claims.

[0055] It should be noted that, in related technologies, to achieve the fully automatic function of rapid start-up of gas-steam combined cycle units, the Automatic Procedure Start-up / Shut-down (APS) system has been implemented and applied in various gas-steam combined cycle units nationwide. This includes breakpoints one, two, three, and four, which operators manually activate sequentially to start and stop the unit. Breakpoint one prepares for system startup; breakpoint two involves boiler water filling and turbine vacuuming; breakpoint three initiates unit startup; and breakpoint four shuts down the unit. Its drawback is the lack of clear division of the startup process for the gas-steam combined cycle unit and the cumbersome operation. If operators want to achieve the goal of starting the unit at breakpoint three, they must first activate breakpoint one, then breakpoint two, and finally breakpoint three.

[0056] To address the aforementioned issues, this application proposes a method and apparatus for controlling the start-up process of a gas-steam combined cycle unit. This method involves: responding to a start-up command received from the gas-steam combined cycle unit; determining the target process based on the start-up command; determining the corresponding target preparation process based on a preset process sequence; sequentially determining the current operating status of the target preparation processes according to the preset process sequence; responding to at least one target preparation process being in an abnormal or non-operating state, sequentially controlling the start of at least one target preparation process and the target process according to the preset process sequence; and responding to a target preparation process being in a normal operating state, controlling the start of the target process. This allows for the start of any process in the preset process sequence while ensuring that all target preparation processes are operating normally before that process is started. Furthermore, it enables flexible start-up processes based on the current unit status, grid-side dispatch information, daily power generation, and daily natural gas consumption, solving the problem of not being able to freely select the start-up process during previous automatic start-up and shutdown procedures, which required re-performing the automatic start-up and shutdown process each time, effectively saving time and costs.

[0057] Figure 1 This is a flowchart of a gas-steam combined cycle unit start-up process control method according to an embodiment of this application.

[0058] like Figure 1 As shown, the start-up process control method for this gas-steam combined cycle unit includes:

[0059] Step 101: In response to receiving the start-up command of the gas-steam combined cycle unit, determine the target process based on the start-up command.

[0060] In this embodiment of the application, the target process includes the unit preparation process, the gas turbine start-up process, the steam turbine start-up and grid connection process, and the unit load increase process.

[0061] For example, in response to receiving a start-up command for a gas-steam combined cycle unit, the gas turbine start-up process is initiated. Based on the aforementioned start-up command, the target process can be determined to be the gas turbine start-up process.

[0062] Step 102: Based on the preset process order, determine the target preparation process corresponding to the target process.

[0063] In this embodiment, the preset process sequence is as follows: unit preparation process, gas turbine start-up process, steam turbine start-up and grid connection process, and unit load increase process are started sequentially.

[0064] As a possible implementation example, following the sequence of unit preparation process, gas turbine start-up process, steam turbine grid connection process, and unit load increase process, if the target process is the gas turbine start-up process, then the target preparation process corresponding to the gas turbine start-up process is determined to be the unit preparation process, that is, the process that needs to be started before the target process starts.

[0065] Step 103: Determine the current running status of the target preparation process in sequence according to the preset process order.

[0066] In this embodiment of the application, the current operating state includes abnormal operating state, normal operating state, and non-operating state.

[0067] In some embodiments of this application, step 103 includes:

[0068] Step a1: According to the preset process order, obtain the historical running data of each target preparation process.

[0069] Step a2: Determine the current running status of the target preparation process based on historical running data.

[0070] For example, following the sequence of unit preparation process, gas turbine start-up process, steam turbine grid connection process, and unit load increase process, if the target process is the steam turbine grid connection process, then the target preparation process is the unit preparation process and the gas turbine start-up process. In this order, firstly, the historical operating data of the unit preparation process is obtained, and based on the historical operating data of the unit preparation process, the current operating status of the unit preparation process is determined; then, the historical operating data of the gas turbine start-up process is obtained, and based on the historical operating data of the gas turbine start-up process, the current operating status of the gas turbine start-up process is determined.

[0071] Step 104: In response to the current state of at least one target preparation process being in an abnormal running state or not running state, control at least one target preparation process and target process to start sequentially according to a preset process order.

[0072] As an example of a possible implementation, in response to the fact that the current state of at least one target preparation process is an abnormal running state or a non-running state, it indicates that the at least one target preparation process needs to be started. Therefore, at least one target preparation process is controlled sequentially according to a preset process order, and then the target process is started. This allows any one process in the preset process order to start, while ensuring that all target preparation processes are running normally before that process is started.

[0073] Step 105: In response to the target preparation process being in normal operating state, control the target process to start.

[0074] As an example of a possible implementation, in response to the target preparation process being in a normal running state, it indicates that the target preparation process does not need to be started, and the target process is directly controlled to start.

[0075] In some embodiments of this application, the steps for initiating the unit preparation process include:

[0076] Step b1: Obtain the current forebay liquid level data;

[0077] Step b2: In response to the current forebay liquid level data meeting the preset requirements, the circulating water system and the open water system are started sequentially.

[0078] Step b3: Obtain the current demineralized water pressure data;

[0079] Step b4: In response to the current demineralized water pressure data meeting the preset requirements, the closed-loop water filling function group, closed-loop water system, air compressor system, turbine lubricating oil system, turbine jacking oil turning gear system, and turbine EH oil system are started in sequence.

[0080] It should be noted that the water system (closed-loop water filling function group, closed-loop water system) and the oil system (steam turbine lubricating oil system, steam turbine jacking oil turning gear system, steam turbine EH oil system) can operate in parallel, avoiding the previous work of starting the water system and then the oil system in sequence, effectively saving the overall start-up time of the unit.

[0081] Step b5: Obtain the current natural gas pressure data;

[0082] Step b6: In response to the current natural gas pressure data meeting the preset requirements, the boiler water supply system, boiler system function group, and auxiliary steam system function group are started in sequence.

[0083] Step b7: Obtain the current compressed air pressure data;

[0084] Step b8: In response to the current compressed air pressure data meeting the preset requirements, the condenser water supply function group, condensate function group, and low-pressure steam drum water supply function group are started in sequence.

[0085] Step b9: Sequentially control the start-up of the turbine shaft sealing system and the turbine vacuum system;

[0086] Step b10: Simultaneously start the low-pressure deaerator heating function group, the medium-pressure steam drum water supply function group, and the high-pressure steam drum water supply function group;

[0087] It should be noted that starting the low-pressure deaerator heating function group, the medium-pressure steam drum water supply function group, and the high-pressure steam drum water supply function group simultaneously, compared to starting them sequentially, effectively reduces the operating time and improves operating efficiency.

[0088] Step b11: Control the start of the waste heat boiler flue function group, control the activation of the waste heat boiler condensate interlock, and control the activation of the turbine condensate interlock.

[0089] In some embodiments of this application, the initiation steps of the gas turbine start-up process include:

[0090] Step c1: In response to the completion of the unit preparation process, determine whether the pressure of the pressure regulating station meets the preset conditions, whether the gas turbine startup meets the preset conditions, and whether the waste heat boiler gas turbine startup meets the preset conditions.

[0091] Step c2: In response to the preset conditions being met by the pressure regulating station, gas turbine startup, and waste heat boiler gas turbine startup, the gas turbine ignition and speed-up function group is activated.

[0092] Step c3: Simultaneously activate the high-pressure steam drum heating and pressurization function group, the medium-pressure steam drum heating and pressurization function group, and the low-pressure steam drum heating and pressurization function group;

[0093] It should be noted that starting the high-pressure steam drum heating and pressurization function group, the medium-pressure steam drum heating and pressurization function group, and the low-pressure steam drum heating and pressurization function group simultaneously improves the startup efficiency compared to starting them sequentially.

[0094] Step c4 sequentially controls the generator to start and connect to the grid, the preheater recirculation function group to start, and the gas turbine temperature matching control to automatically engage.

[0095] In some embodiments of this application, the initiation steps of the turbine startup and grid connection process include:

[0096] In response to the completion of the gas turbine startup process, the steam turbine start-up function group, the SSS clutch engagement function group, and the steam turbine digital electro-hydraulic control system DEH pressure control function group are started in sequence, and the gas-steam combined cycle unit is started.

[0097] According to the gas-steam combined cycle unit start-up process control method of this application embodiment, in response to receiving a start-up command from the gas-steam combined cycle unit, a target process is determined based on the start-up command; a target preparation process corresponding to the target process is determined based on a preset process sequence; the current operating state of the target preparation processes is determined sequentially according to the preset process sequence; in response to at least one target preparation process being in an abnormal operating state or not operating state, at least one target preparation process and the target process are started sequentially according to the preset process sequence; in response to the target preparation process being in a normal operating state, the target process is started. This allows for the start-up of any process in the preset process sequence while ensuring that all target preparation processes are operating normally before starting that process. Furthermore, it enables flexible start-up processes based on the current unit status, grid-side dispatch information, daily power generation, and daily natural gas consumption, solving the problem that in previous automatic start-up and shutdown procedures for units could not freely select the start-up process, requiring a complete re-run of the automatic start-up and shutdown process each time, effectively saving time and costs.

[0098] Figure 2 This is a structural block diagram of a gas-steam combined cycle unit start-up process control device according to an embodiment of this application.

[0099] like Figure 2 As shown, the start-up process control device for the gas-steam combined cycle unit includes:

[0100] The first determining module 201 is used to determine the target process based on the received start-up command of the gas-steam combined cycle unit; wherein, the target process includes the unit preparation process, the gas turbine start-up process, the steam turbine start-up and grid connection process, and the unit load increase process.

[0101] The second determining module 202 is used to determine the target preparation process corresponding to the target process based on a preset process sequence; wherein, the preset process sequence is that the unit preparation process, gas turbine start-up process, steam turbine grid connection process, and unit load increase process are started in sequence.

[0102] The third determining module 203 is used to determine the current running status of the target preparation process in a preset process order; the current running status includes abnormal running status, normal running status and non-running status;

[0103] The first control module 204 is used to control at least one target preparation process and the target process to start sequentially according to a preset process order in response to the current state of at least one target preparation process being in an abnormal running state or a non-running state.

[0104] The second control module 205 is used to control the start of the target process in response to the target preparation process being in normal operating state.

[0105] In some embodiments of this application, the third determining module 203 includes:

[0106] The acquisition submodule is used to acquire historical running data of each target preparation process according to a preset process order.

[0107] The determination submodule is used to determine the current running status of the target preparation process based on historical running data.

[0108] According to the gas-steam combined cycle unit start-up process control device of this application embodiment, in response to receiving a start-up command from the gas-steam combined cycle unit, it determines a target process based on the start-up command; determines a target preparation process corresponding to the target process based on a preset process sequence; sequentially determines the current operating state of the target preparation processes according to the preset process sequence; in response to at least one target preparation process being in an abnormal operating state or not operating state, it controls at least one target preparation process and the target process to start sequentially according to the preset process sequence; in response to a target preparation process being in a normal operating state, it controls the target process to start. This enables the start-up of any process in the preset process sequence while ensuring that all target preparation processes are operating normally before starting that process. Furthermore, it enables flexible start-up processes based on the current unit status, grid-side dispatch information, daily power generation, and daily natural gas consumption, solving the problem that in previous automatic start-up and shutdown procedures for units could not freely select the start-up process, requiring a complete re-run of the automatic start-up and shutdown process each time, effectively saving time and costs.

[0109] Figure 3 This is a block diagram of an electronic device according to an embodiment of this application. For example... Figure 3 As shown, the electronic device may include: a transceiver 31, a processor 32, and a memory 33.

[0110] Processor 32 executes computer execution instructions stored in memory, causing processor 32 to perform the scheme in the above embodiments. Processor 32 can be a general-purpose processor, including a central processing unit (CPU), a network processor (NP), etc.; it can 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, or discrete hardware components.

[0111] The memory 33 is connected to the processor 32 via the system bus and completes communication between them. The memory 33 is used to store computer program instructions.

[0112] Transceiver 31 can be used to obtain the task to be run and its configuration information.

[0113] The system bus can be a Peripheral Component Interconnect (PCI) bus or an Extended Industry Standard Architecture (EISA) bus, etc. The system bus can be divided into address bus, data bus, control bus, etc. For ease of representation, only one thick line is used in the diagram, but this does not indicate that there is only one bus or one type of bus. Transceivers are used to enable communication between database access devices and other computers (e.g., clients, read-write libraries, and read-only libraries). Memory may include random access memory (RAM) and may also include non-volatile memory.

[0114] The electronic device provided in this application embodiment can be the terminal device described in the above embodiments.

[0115] This application also provides a chip for executing instructions, which is used to execute the message processing method described in the above embodiments.

[0116] This application also provides a computer-readable storage medium storing computer instructions that, when executed on a computer, cause the computer to perform the message processing method described in the above embodiments.

[0117] This application also provides a computer program product, which includes a computer program stored in a computer-readable storage medium. At least one processor can read the computer program from the computer-readable storage medium, and when the at least one processor executes the computer program, it can implement the technical solution of the message processing method in the above embodiments.

[0118] Other embodiments of this application will readily occur to those skilled in the art upon consideration of the specification and practice of the invention disclosed herein. This application is intended to cover any variations, uses, or adaptations of this application that follow the general principles of this application and include common knowledge or customary techniques in the art not disclosed herein. The specification and examples are to be considered exemplary only, and the true scope and spirit of this application are indicated by the following claims.

[0119] It should be understood that this application is not limited to the precise structure described above and shown in the accompanying drawings, and various modifications and changes can be made without departing from its scope. The scope of this application is limited only by the appended claims.

Claims

1. A method for controlling the start-up process of a gas-steam combined cycle unit, characterized in that, The method includes: In response to receiving a start-up command for a gas-steam combined cycle unit, a target process is determined based on the start-up command; wherein, the target process includes the unit preparation process, the gas turbine start-up process, the steam turbine start-up and grid connection process, and the unit load increase process; Based on a preset process sequence, the target preparation process corresponding to the target process is determined; wherein, the preset process sequence is that the unit preparation process, gas turbine start-up process, steam turbine grid connection process, and unit load increase process are started in sequence, and the processes that need to be started before the target process is started are determined as the target preparation processes according to the sequence of the unit preparation process, gas turbine start-up process, steam turbine grid connection process, and unit load increase process. The current running status of the target preparation process is determined sequentially according to the preset process order; the current running status includes abnormal running status, normal running status, and non-running status; In response to the fact that the current state of at least one target preparation process is an abnormal running state or a non-running state, the at least one target preparation process and the target process are started sequentially according to the preset process order; In response to the target preparation process being in a normal running state, the target process is controlled to start.

2. The method according to claim 1, characterized in that, The step of determining the current running state of the target preparation process sequentially according to the preset process order includes: According to the preset process order, for each target preparation process, obtain the historical running data of the target preparation process; Based on the historical running data, the current running status of the target preparation process is determined.

3. The method according to claim 1, characterized in that, The steps for initiating the unit preparation process include: Obtain the current forebay liquid level data; In response to the current forebay liquid level data meeting the preset requirements, the circulating water system and the open water system are started sequentially. Obtain the current demineralized water pressure data; In response to the current demineralized water pressure data meeting the preset requirements, the closed-loop water filling function group, closed-loop water system, air compressor system, turbine lubricating oil system, turbine jacking oil turning gear system, and turbine EH oil system are started sequentially. Obtain current natural gas pressure data; In response to the current natural gas pressure data meeting the preset requirements, the boiler water supply system, boiler system function group, and auxiliary steam system function group are started sequentially. Obtain the current compressed air pressure data; In response to the current compressed air pressure data meeting the preset requirements, the condenser water supply function group, condensate function group, and low-pressure steam drum water supply function group are started in sequence. The turbine shaft sealing system and the turbine vacuum system are started sequentially. Simultaneously activate the low-pressure deaerator heating function group, the medium-pressure steam drum water supply function group, and the high-pressure steam drum water supply function group. Start the waste heat boiler flue gas duct function group, control the waste heat boiler drain interlock to engage, and control the turbine drain interlock to engage.

4. The method according to claim 1, characterized in that, The starting steps of the gas turbine start-up process include: In response to the completion of the unit preparation process and startup, it is determined whether the pressure regulating station pressure meets the preset conditions, whether the gas turbine startup meets the preset conditions, and whether the waste heat boiler gas turbine startup meets the preset conditions. In response to the preset conditions being met by the pressure regulating station, gas turbine startup, and waste heat boiler gas turbine startup, the gas turbine ignition and speed-up function group is activated. The high-pressure steam drum heating and pressurization function group, the medium-pressure steam drum heating and pressurization function group, and the low-pressure steam drum heating and pressurization function group are activated simultaneously. The generator is started and connected to the grid in sequence, the preheater recirculation function group is started, and the gas turbine temperature matching control is automatically activated.

5. The method according to claim 1, characterized in that, The initiation steps of the turbine commissioning and grid connection process include: In response to the completion of the gas turbine startup process, the turbine start-up function group, the SSS clutch engagement function group, and the turbine digital electro-hydraulic control system DEH pressure control function group are started in sequence, and the gas-steam combined cycle unit is started.

6. A start-up process control device for a gas-steam combined cycle unit, characterized in that, The device includes: The first determining module is used to determine the target process based on the received start-up command of the gas-steam combined cycle unit; wherein, the target process includes the unit preparation process, the gas turbine start-up process, the steam turbine start-up and grid connection process, and the unit load increase process. The second determining module is used to determine the target preparation process corresponding to the target process based on a preset process sequence; wherein, the preset process sequence is that the unit preparation process, gas turbine start-up process, steam turbine grid connection process, and unit load increase process are started in sequence, and the processes that need to be started before the target process is started are determined as the target preparation processes according to the sequence of the unit preparation process, gas turbine start-up process, steam turbine grid connection process, and unit load increase process. The third determining module is used to determine the current running status of the target preparation process in the preset process order; the current running status includes abnormal running status, normal running status and non-running status; The first control module is used to respond to the fact that the current state of at least one target preparation process is an abnormal running state or a non-running state, and to control the start of the at least one target preparation process and the target process in the preset process order. The second control module is used to control the target process to start in response to the target preparation process being in a normal running state.

7. The apparatus according to claim 6, characterized in that, The third determining module includes: The acquisition submodule is used to acquire the historical running data of each target preparation process according to the preset process order. The determination submodule is used to determine the current running status of the target preparation process based on the historical running data.

8. An electronic device, characterized in that, include: A processor, and a memory communicatively connected to the processor; The memory stores computer-executed instructions; The processor executes computer execution instructions stored in the memory to implement the method as described in any one of claims 1-5.

9. A computer-readable storage medium, characterized in that, The computer-readable storage medium stores computer-executable instructions, which, when executed by a processor, are used to implement the method as described in any one of claims 1-5.

10. A computer program product, characterized in that, Includes a computer program that, when executed by a processor, implements the method of any one of claims 1-5.

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