Gas-steam combined cycle unit multi-system parallel starting control method and device

Abstract

This application relates to a method and apparatus for parallel start-up control of multiple systems in a gas-steam combined cycle unit. Specifically, in response to receiving a start-up command for the gas-steam combined cycle unit, it is determined whether the operating status of multiple target systems meets preset requirements; in response to all target systems operating normally, a first parallel module is started; in response to the successful start-up of the first parallel module, a second parallel module is started; in response to the successful start-up of the second parallel module, the gas-steam combined cycle unit is put into operation mode. This application improves the start-up 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 device for parallel start-up control of multiple systems in a gas-steam combined cycle unit. Background Technology

[0002] In related technologies, during the development of traditional intelligent start-up, the fully automatic rapid start-up function of gas-steam combined cycle units is the Automatic Procedure Start-up / Shut-down (APS), which includes breakpoints one, two, three, and four. In actual production, operators manually click on each breakpoint 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. Although this traditional automatic start-up method solves the problem of cumbersome operation caused by manually starting each system, it still suffers from excessively long startup times. This is because the traditional automatic start-up method can only start each system function group sequentially. Summary of the Invention

[0003] Therefore, this application provides a method and apparatus for parallel start-up control of multiple systems in 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 parallel start-up control of multiple systems in 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, determine whether the operating status of multiple target systems meets preset requirements;

[0006] In response to the normal operation of the multiple target systems, the first parallel module is activated; wherein, the first parallel module includes a steam turbine-water system and a steam system; the first parallel module is used to control the steam turbine-water system and the steam system to operate in parallel;

[0007] In response to the successful startup of the first parallel module, the second parallel module is started; wherein, the second parallel module includes a waste heat boiler drum water level system and a turbine bypass system; the second parallel module is used to control the parallel operation of the waste heat boiler drum water level system and the turbine bypass system;

[0008] In response to the successful startup of the second parallel module, the control gas-steam combined cycle unit is put into operation mode.

[0009] According to one embodiment of this application, the step of determining whether the operating status of multiple target systems meets preset requirements in response to receiving a start-up command for a gas-steam combined cycle unit includes:

[0010] In response to receiving a start-up command from the gas-steam combined cycle unit, acquire current operating data;

[0011] Based on the current operating data, determine in sequence whether the operating status of the electrical system and the compressed air system meets the preset requirements;

[0012] In response to the normal operation of the electrical system and compressed air system, the system simultaneously determines whether the circulating water forebay level, demineralized water supply pressure, and natural gas system operation status meet the preset requirements based on the current operating data.

[0013] According to one embodiment of this application, the turbine water system includes a circulating water functional group, an open water functional group, a closed water functional group, and a condensate functional group; the steam system includes an auxiliary steam functional group; the step of controlling the first parallel module to start in response to the normal operation of the plurality of target systems includes:

[0014] In response to determining that the liquid level in the circulating water forepool meets the preset requirements, the circulating water function group and the open water function group are started sequentially.

[0015] In response to determining that the demineralized water supply pressure meets the preset requirements, the closed-loop water function group, condensate function group and boiler water supply function group are simultaneously activated.

[0016] In response to determining that the operating status of the natural gas system meets the preset requirements and the boiler water supply function group has been started, the boiler function group and the auxiliary steam function group are started in sequence.

[0017] Based on the current operating data, determine whether the auxiliary steam header pressure and auxiliary steam header temperature meet the preset requirements;

[0018] In response to the auxiliary steam header pressure and temperature meeting preset requirements, and the completion of the activation of the circulating water function group, the closed water function group, and the condensate function group, the turbine auxiliary system is activated.

[0019] According to one embodiment of this application, the waste heat boiler drum water level system includes a low-pressure drum water supply function group, a medium-pressure drum water supply function group, a high-pressure drum water supply function group, a chimney baffle, a drain valve, and an exhaust valve; the step of controlling the second parallel module to start in response to the successful startup of the first parallel module includes:

[0020] The control shaft seal vacuuming function group and the low-pressure steam drum water supply function group are started simultaneously;

[0021] Simultaneously activate the high-pressure steam drum water supply function group and the medium-pressure steam drum water supply function group;

[0022] Determine whether the condenser back pressure value meets the preset requirements, and in response to the condenser back pressure value meeting the preset requirements, control the turbine bypass system to be activated.

[0023] Simultaneously control the opening of the waste heat boiler chimney damper, the activation of the waste heat boiler drain valve, the activation of the waste heat boiler exhaust valve interlock, and the activation of the turbine-side drain valve interlock.

[0024] According to one embodiment of this application, the step of controlling the gas-steam combined cycle unit to enter operation mode in response to the successful startup of the second parallel module includes:

[0025] Determine whether the water levels in the high-pressure steam drum, medium-pressure steam drum, and low-pressure steam drum meet the preset requirements, and whether the chimney damper is open;

[0026] In response to the high-pressure steam drum water level, medium-pressure steam drum water level, and low-pressure steam drum water level meeting the preset requirements and the chimney damper opening, the casing fan and gas turbine are started in sequence, and the gas turbine is ignited.

[0027] Simultaneously control the gas turbine grid connection, control the high-pressure steam drum heating and pressurization function group, the medium-pressure steam drum heating and pressurization function group, the low-pressure steam drum heating and pressurization function group, and the main steam pressurization bypass enters the activated state.

[0028] Determine whether the steam parameters for turbine startup meet the preset requirements. In response to the steam parameters for turbine startup meeting the preset requirements, control the turbine startup, turbine warm-up, turbine speed increase, turbine speed maintenance and SSS clutch engagement in sequence.

[0029] Simultaneously control the start-up of the unit's load increase function group and the entry of the turbine bypass into the program shutdown mode;

[0030] Simultaneously, the unit's coordinated control system (CCS) is activated, the automatic generator control system (AGC) is activated, and the auxiliary steam header's steam source is switched to control the gas-steam combined cycle unit's operational mode.

[0031] According to a second aspect of the embodiments of this application, a multi-system parallel start-up control device for a gas-steam combined cycle unit is provided, the device comprising:

[0032] The determination module is used to determine whether the operating status of multiple target systems meets preset requirements in response to receiving a start-up command for a gas-steam combined cycle unit;

[0033] A first control module is configured to control the startup of a first parallel module in response to the normal operation of the plurality of target systems; wherein the first parallel module includes a steam turbine-water system and a steam system; the first parallel module is configured to control the steam turbine-water system and the steam system to operate in parallel;

[0034] The second control module is used to control the second parallel module to start in response to the successful startup of the first parallel module; wherein, the second parallel module includes a waste heat boiler drum water level system and a turbine bypass system; the second parallel module is used to control the waste heat boiler drum water level system and the turbine bypass system to operate in parallel;

[0035] The third control module is used to control the gas-steam combined cycle unit to enter the operating mode in response to the successful startup of the second parallel module.

[0036] According to one embodiment of this application, the determining module includes:

[0037] The acquisition submodule is used to acquire current operating data in response to receiving a start-up command from the gas-steam combined cycle unit;

[0038] The first determining submodule is used to determine, based on the current operating data, whether the operating status of the electrical system and the compressed air system meets the preset requirements.

[0039] The second determining submodule is used to determine, in response to the normal operation of the electrical system and compressed air system, whether the circulating water forebay level, demineralized water supply pressure, and natural gas system operation status meet preset requirements based on the current operating data.

[0040] 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;

[0041] The memory stores computer-executed instructions;

[0042] The processor executes computer execution instructions stored in the memory to implement the method as described in any one of the first aspects.

[0043] 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.

[0044] 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.

[0045] The technical solutions provided by the embodiments of this application bring at least the following beneficial effects:

[0046] In response to receiving a start-up command for the gas-steam combined cycle unit, the system determines whether the operating status of multiple target systems meets preset requirements. If all target systems are operating normally, the system controls the start of the first parallel module. If the first parallel module starts successfully, the system controls the start of the second parallel module. If the second parallel module starts successfully, the system controls the gas-steam combined cycle unit to enter operating mode. By controlling and integrating the concurrently running system function groups, the system can simultaneously establish parameter values ​​for the water system and the high, medium, and low-voltage steam drums, as well as the turbine oil system and the turbine steam system. This significantly reduces start-up time, solving the problems of long start-up times and high energy consumption caused by sequentially starting each system function group. Furthermore, it achieves the goal of rapid start-up and can smoothly respond to the peak-shaving and frequency regulation needs of the power grid, achieving the goal of flexible and rapid start-up.

[0047] 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

[0048] 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.

[0049] Figure 1 This is a flowchart of a multi-system parallel start-up control method for a gas-steam combined cycle unit according to an embodiment of this application;

[0050] Figure 2 This is a structural block diagram of a multi-system parallel start-up control device for a gas-steam combined cycle unit, as described in an embodiment of this application.

[0051] Figure 3 This is a block diagram of an electronic device according to an embodiment of this application. Detailed Implementation

[0052] 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.

[0053] 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.

[0054] It should be noted that in the development of traditional intelligent start-up technologies, the fully automatic rapid start-up function of gas-steam combined cycle units is the Automatic Procedure Start-up / Shut-down (APS), which includes breakpoints one, two, three, and four. In actual production, operators manually click on each breakpoint sequentially to start and stop the unit. Breakpoint one prepares for system startup; breakpoint two involves boiler water filling and turbine vacuuming; and breakpoint three initiates unit startup. Although this traditional automatic start-up method solves the problem of cumbersome operation caused by manually starting each system, it still suffers from excessively long startup times. This is because the traditional automatic start-up method can only start each system function group sequentially.

[0055] To address the aforementioned issues, this application proposes a multi-system parallel start-up control method and apparatus for gas-steam combined cycle units. This method, in response to receiving a start-up command from the gas-steam combined cycle unit, determines whether the operating status of multiple target systems meets preset requirements; if all target systems are operating normally, it controls the start of the first parallel module; if the first parallel module starts successfully, it controls the start of the second parallel module; and if the second parallel module starts successfully, it controls the gas-steam combined cycle unit to enter operating mode. By controlling and integrating the concurrently running system functional groups, the parameter values ​​of the water system and the high, medium, and low voltage steam drums can be established simultaneously, as well as the turbine oil system and the turbine steam system. This significantly reduces start-up time, solving the problems of long start-up times and high energy consumption caused by the traditional sequential start-up of each system functional group. Furthermore, it achieves the goal of rapid start-up and can smoothly respond to the peak-shaving and frequency regulation needs of the power grid, achieving the goal of flexible and rapid start-up.

[0056] Figure 1 This is a flowchart of a multi-system parallel start-up control method for a gas-steam combined cycle unit according to an embodiment of this application.

[0057] like Figure 1As shown, the multi-system parallel start-up control method for this gas-steam combined cycle unit includes:

[0058] Step 101: In response to receiving the start-up command of the gas-steam combined cycle unit, determine whether the operating status of multiple target systems meets the preset requirements.

[0059] In some embodiments of this application, step 101 includes:

[0060] Step a1: In response to receiving the start-up command of the gas-steam combined cycle unit, obtain the current operating data.

[0061] Step a2: Based on the current operating data, determine in turn whether the operating status of the electrical system and the compressed air system meets the preset requirements.

[0062] Step a3: In response to the normal operation of the electrical system and compressed air system, determine whether the circulating water forebay level, demineralized water supply pressure, and natural gas system operation status meet the preset requirements based on the current operating data.

[0063] Step 102: In response to the normal operation of multiple target systems, control the first parallel module to start.

[0064] The first parallel module includes a steam turbine water system and a steam system; the first parallel module is used to control the parallel operation of the steam turbine water system and the steam system.

[0065] In some embodiments of this application, step 102 includes:

[0066] Step b1: In response to determining that the liquid level in the circulating water forebay meets the preset requirements, the circulating water function group and the open water function group are started sequentially.

[0067] Step b2: In response to determining that the demineralized water supply pressure meets the preset requirements, the closed-loop water function group, condensate function group and boiler water supply function group are started simultaneously.

[0068] It is understandable that simultaneously controlling the start-up of the closed-loop water function group, condensate function group, and boiler water supply function group can significantly reduce the time-consuming process of starting them sequentially. By simultaneously establishing start-up preparations for the water system and boiler system, the maximum utilization rate of the water side can be achieved.

[0069] Step b3: In response to determining that the operating status of the natural gas system meets the preset requirements and the boiler water supply function group has been started, the boiler function group and the auxiliary steam function group are started in sequence.

[0070] Step b4: Based on the current operating data, determine whether the auxiliary steam header pressure and auxiliary steam header temperature meet the preset requirements;

[0071] Step b5: In response to the auxiliary steam header pressure and temperature meeting preset requirements, and the completion of the activation of the circulating water function group, closed-loop water function group, and condensate function group, the turbine auxiliary system is activated. It can be understood that at this point, the turbine's auxiliary water system, auxiliary steam system, and turbine oil system have all met the requirements.

[0072] Step 103: In response to the successful startup of the first parallel module, control the startup of the second parallel module.

[0073] The second parallel module includes a waste heat boiler drum water level system and a turbine bypass system; the second parallel module is used to control the parallel operation of the waste heat boiler drum water level system and the turbine bypass system.

[0074] In some embodiments of this application, step 103 includes:

[0075] Step c1: Simultaneously start the shaft seal vacuum function group and the low-pressure steam drum water supply function group;

[0076] Step c2: Control the high-pressure steam drum water supply function group and the medium-pressure steam drum water supply function group to start simultaneously;

[0077] Step c3: Determine whether the condenser back pressure value meets the preset requirements. In response to the condenser back pressure value meeting the preset requirements, control the turbine bypass system to be put into operation. At this time, the turbine bypass system has the conditions for operation.

[0078] Step c4 simultaneously controls the opening of the waste heat boiler chimney damper, the activation of the waste heat boiler drain valve, the activation of the waste heat boiler exhaust valve interlock, and the activation of the turbine-side drain valve interlock.

[0079] Step 104: In response to the successful startup of the second parallel module, control the gas-steam combined cycle unit to enter the operation mode.

[0080] In some embodiments of this application, step 104 includes:

[0081] Step d1: Determine whether the high-pressure steam drum water level, medium-pressure steam drum water level, and low-pressure steam drum water level meet the preset requirements and whether the chimney damper is open. If the high-pressure steam drum water level, medium-pressure steam drum water level, and low-pressure steam drum water level are normal and the chimney damper is open, it indicates that the waste heat boiler system has the conditions to drive the gas turbine to start, including good high, medium, and low-pressure steam drum water levels, smooth opening of the waste heat boiler damper, stable operation of the condensate drainage system, and operation of the turbine bypass.

[0082] In step d2, in response to the high-pressure steam drum water level, medium-pressure steam drum water level, and low-pressure steam drum water level meeting preset requirements and the chimney damper opening, the casing fan and gas turbine are started sequentially, and the gas turbine is ignited. At this point, the gas turbine has successfully entered the ignition mode, laying the foundation for the next step of speed increase and grid connection.

[0083] In step d3, the gas turbine is simultaneously connected to the grid, and the high-pressure steam drum, intermediate-pressure steam drum, and low-pressure steam drum temperature and pressure boosting function groups are activated. The main steam pressure boosting bypass is also activated. At this time, the high-pressure, intermediate-pressure, and low-pressure steam drums continuously provide the gas turbine and steam turbine with corresponding matching parameter values, laying the foundation for subsequent steam turbine startup.

[0084] Step d4: Determine whether the steam parameters for turbine startup meet the preset requirements. In response to the steam parameters meeting the preset requirements, sequentially control turbine startup, turbine warm-up, turbine speed increase, turbine speed stabilization, and SSS clutch engagement. At this time, the turbine has reached the required speed value by continuously increasing its speed and successfully engages with the gas turbine through the SSS clutch, achieving the goal of co-operation of the gas turbine and turbine.

[0085] In step d5, the unit's load increase function group is activated simultaneously, and the turbine bypass enters the programmed off mode. At this time, the gas-steam combined cycle unit begins to continuously increase the load value, and the turbine also smoothly meshes with the gas turbine to operate together, so the bypass mode is in the off mode.

[0086] In step d6, the coordinated control system (CCS) of the unit is activated, the automatic generator control system (AGC) is activated, and the steam source of the auxiliary steam header is switched to control the gas-steam combined cycle unit into operation mode. At this time, the gas-steam combined cycle unit is in fully automatic operation and will automatically adjust the unit's load value according to the response of the power grid dispatch.

[0087] According to the multi-system parallel start-up control method for gas-steam combined cycle units in this application, in response to receiving a start-up command for the gas-steam combined cycle unit, it determines whether the operating status of multiple target systems meets preset requirements; in response to multiple target systems operating normally, it controls the start-up of the first parallel module; in response to the successful start-up of the first parallel module, it controls the start-up of the second parallel module; in response to the successful start-up of the second parallel module, it controls the gas-steam combined cycle unit to enter the operating mode. By controlling the simultaneous parallel system function groups for integrated allocation, the parameter values ​​of the water system and the high, medium, and low temperature steam drums can be established at the same time, as well as the turbine oil system and the turbine steam system. This greatly reduces the start-up time, solves the problems of long start-up time and high energy consumption caused by the traditional sequential start-up of each system function group, achieves the goal of rapid start-up, and can smoothly respond to the peak shaving and frequency regulation needs of the power grid, achieving the goal of flexible and rapid start-up.

[0088] Figure 2 This is a flowchart of a multi-system parallel start-up control device for a gas-steam combined cycle unit, as described in an embodiment of this application.

[0089] like Figure 2As shown, the multi-system parallel start-up control device for the gas-steam combined cycle unit includes:

[0090] The determination module 201 is used to determine whether the operating status of multiple target systems meets preset requirements in response to receiving the start command of the gas-steam combined cycle unit;

[0091] The first control module 202 is used to control the start of the first parallel module in response to the normal operation of multiple target systems; wherein, the first parallel module includes a steam turbine-water system and a steam system; the first parallel module is used to control the parallel operation of the steam turbine-water system and the steam system;

[0092] The second control module 203 is used to control the second parallel module to start in response to the successful startup of the first parallel module; wherein, the second parallel module includes a waste heat boiler drum water level system and a turbine bypass system; the second parallel module is used to control the waste heat boiler drum water level system and the turbine bypass system to operate in parallel;

[0093] The third control module 204 is used to control the gas-steam combined cycle unit to enter the operation mode in response to the successful startup of the second parallel module.

[0094] In some embodiments of this application, the determining module 201 includes:

[0095] The acquisition submodule is used to acquire current operating data in response to receiving a start-up command from the gas-steam combined cycle unit;

[0096] The first determining submodule is used to determine, based on the current operating data, whether the operating status of the electrical system and the compressed air system meets the preset requirements.

[0097] The second determining submodule is used to determine whether the circulating water forebay level, demineralized water supply pressure, and natural gas system operation status meet preset requirements based on the current operating data, in response to the normal operation of the electrical system and compressed air system.

[0098] According to the embodiments of this application, the multi-system parallel start-up control device for a gas-steam combined cycle unit determines whether the operating status of multiple target systems meets preset requirements upon receiving a start-up command for the gas-steam combined cycle unit; if all target systems are operating normally, it controls the start of the first parallel module; if the first parallel module starts successfully, it controls the start of the second parallel module; and if the second parallel module starts successfully, it controls the gas-steam combined cycle unit to enter the operating mode. By controlling the simultaneous parallel system function groups for integrated allocation, the parameter values ​​of the water system and the high, medium, and low voltage steam drums can be established at the same time, as well as the turbine oil system and the turbine steam system. This greatly reduces the start-up time, solves the problems of long start-up time and high energy consumption caused by the traditional sequential start-up of each system function group, achieves the goal of rapid start-up, and can smoothly respond to the peak shaving and frequency regulation needs of the power grid, thus achieving the goal of flexible and rapid start-up.

[0099] 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.

[0100] 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.

[0101] 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.

[0102] Transceiver 31 can be used to obtain the task to be run and its configuration information.

[0103] 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.

[0104] The electronic device provided in this application embodiment can be the terminal device described in the above embodiments.

[0105] This application also provides a chip for executing instructions, which is used to execute the message processing method described in the above embodiments.

[0106] 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.

[0107] 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.

[0108] 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.

[0109] 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 parallel start-up control of multiple systems in 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, determine whether the operating status of multiple target systems meets preset requirements; In response to the normal operation of the multiple target systems, the first parallel module is activated; wherein, the first parallel module includes a turbine-water system and a steam system; the first parallel module is used to control the parallel operation of the turbine-water system and the steam system; the turbine-water system includes a circulating water function group, an open water function group, a closed water function group, and a condensate function group; the steam system includes an auxiliary steam function group; In response to the successful startup of the first parallel module, the second parallel module is started; wherein, the second parallel module includes a waste heat boiler drum water level system and a turbine bypass system; the second parallel module is used to control the parallel operation of the waste heat boiler drum water level system and the turbine bypass system; In response to the successful startup of the second parallel module, the control gas-steam combined cycle unit is put into operation mode.

2. The method according to claim 1, characterized in that, The step of responding to a start-up command for a gas-steam combined cycle unit by determining whether the operating status of multiple target systems meets preset requirements includes: In response to receiving a start-up command from the gas-steam combined cycle unit, acquire current operating data; Based on the current operating data, determine in sequence whether the operating status of the electrical system and the compressed air system meets the preset requirements; In response to the normal operation of the electrical system and compressed air system, the system simultaneously determines whether the circulating water forebay level, demineralized water supply pressure, and natural gas system operation status meet the preset requirements based on the current operating data.

3. The method according to claim 2, characterized in that, The response that all the multiple target systems are operating normally, controlling the first parallel module to start, includes: In response to determining that the liquid level in the circulating water forepool meets the preset requirements, the circulating water function group and the open water function group are started sequentially. In response to determining that the demineralized water supply pressure meets the preset requirements, the closed-loop water function group, condensate function group and boiler water supply function group are simultaneously activated. In response to determining that the operating status of the natural gas system meets the preset requirements and the boiler water supply function group has been started, the boiler function group and the auxiliary steam function group are started in sequence. Based on the current operating data, determine whether the auxiliary steam header pressure and auxiliary steam header temperature meet the preset requirements; In response to the auxiliary steam header pressure and temperature meeting preset requirements, and the completion of the activation of the circulating water function group, the closed water function group, and the condensate function group, the turbine auxiliary system is activated.

4. The method according to claim 3, characterized in that, The waste heat boiler drum water level system includes a low-pressure drum water supply function group, a medium-pressure drum water supply function group, a high-pressure drum water supply function group, a chimney damper, a drain valve, and an exhaust valve; the step of controlling the start of the second parallel module in response to the successful start of the first parallel module includes: The control shaft seal vacuuming function group and the low-pressure steam drum water supply function group are started simultaneously; The high-pressure steam drum water supply function group and the medium-pressure steam drum water supply function group are started simultaneously. Determine whether the condenser back pressure value meets the preset requirements, and in response to the condenser back pressure value meeting the preset requirements, control the turbine bypass system to be activated. Simultaneously control the opening of the waste heat boiler chimney damper, the activation of the waste heat boiler drain valve, the activation of the waste heat boiler exhaust valve interlock, and the activation of the turbine-side drain valve interlock.

5. The method according to claim 4, characterized in that, The response to the successful startup of the second parallel module, controlling the gas-steam combined cycle unit to enter the operating mode, includes: Determine whether the water levels in the high-pressure steam drum, medium-pressure steam drum, and low-pressure steam drum meet the preset requirements, and whether the chimney damper is open; In response to the high-pressure steam drum water level, medium-pressure steam drum water level, and low-pressure steam drum water level meeting the preset requirements and the chimney damper opening, the casing fan and gas turbine are started in sequence, and the gas turbine is ignited. Simultaneously control the gas turbine grid connection, control the high-pressure steam drum heating and pressurization function group, the medium-pressure steam drum heating and pressurization function group, the low-pressure steam drum heating and pressurization function group, and the main steam pressurization bypass enters the activated state. Determine whether the steam parameters for turbine startup meet the preset requirements. In response to the steam parameters for turbine startup meeting the preset requirements, control the turbine startup, turbine warm-up, turbine speed increase, turbine speed maintenance and SSS clutch engagement in sequence. Simultaneously control the start-up of the unit's load increase function group and the turbine bypass to enter the program shutdown mode; Simultaneously, the unit's coordinated control system (CCS) is activated, the automatic generator control system (AGC) is activated, and the auxiliary steam header's steam source is switched to control the gas-steam combined cycle unit's operational mode.

6. A multi-system parallel start-up control device for a gas-steam combined cycle unit, characterized in that, The device includes: The determination module is used to determine whether the operating status of multiple target systems meets preset requirements in response to receiving a start-up command for a gas-steam combined cycle unit; The first control module is used to control the startup of the first parallel module in response to the normal operation of the multiple target systems; wherein, the first parallel module includes a turbine-water system and a steam system; the first parallel module is used to control the turbine-water system and the steam system to operate in parallel; the turbine-water system includes a circulating water function group, an open water function group, a closed water function group, and a condensate function group; the steam system includes an auxiliary steam function group. The second control module is used to control the second parallel module to start in response to the successful startup of the first parallel module; wherein, the second parallel module includes a waste heat boiler drum water level system and a turbine bypass system; the second parallel module is used to control the waste heat boiler drum water level system and the turbine bypass system to operate in parallel; The third control module is used to control the gas-steam combined cycle unit to enter the operating mode in response to the successful startup of the second parallel module.

7. The apparatus according to claim 6, characterized in that, The determining module includes: The acquisition submodule is used to acquire current operating data in response to receiving a start-up command from the gas-steam combined cycle unit; The first determining submodule is used to determine, based on the current operating data, whether the operating status of the electrical system and the compressed air system meets the preset requirements. The second determining submodule is used to determine, in response to the normal operation of the electrical system and compressed air system, whether the circulating water forebay level, demineralized water supply pressure, and natural gas system operation status meet preset requirements based on the current operating 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.

Images