Gas-steam combined cycle unit starting control method, device and equipment

Abstract

The invention relates to the technical field of gas-steam combined cycle power generation, in particular to a gas-steam combined cycle unit starting control method, device and equipment and a storage medium, and the method comprises the steps that real-time operation data of a gas turbine are obtained, and the gas exhaust temperature and the gas exhaust flow of the gas turbine are determined according to the real-time operation data of the gas turbine; based on the environment atmosphere parameters and the bottom circulation equipment limiting conditions, a gas turbine exhaust parameter adjusting instruction is obtained; dynamically adjusting the opening degree of an adjustable guide vane of an inlet of the gas turbine based on the gas turbine exhaust parameter adjusting instruction; the matching relation between gas turbine exhaust parameters and bottom circulation steam parameters is optimized through the real-time metal temperature of the waste heat boiler and the heating state of the steam turbine. Key operation data in the starting process of the combined cycle unit are collected, and the optimization effect of the matching relation between the gas turbine exhaust parameters and the bottom cycle steam parameters is evaluated. And if the optimization effect does not reach the preset target, correcting the gas turbine exhaust parameter optimization strategy table so as to improve the control precision of the subsequent starting process.

Description

Technical Field

[0001] The present application relates to the technical field of gas-steam combined cycle power generation, and in particular to a gas-steam combined cycle unit startup control method, device, equipment and storage medium. Background Art

[0002] With the continuous development of gas-steam combined cycle technology, its advantages such as high operating efficiency, flexible start-up and shutdown, and low pollutant emissions have gradually become apparent. The improvement in peak-shaving capacity has also provided strong support for the stability and reliability of the power grid. However, the start-up and shutdown speeds of the waste heat boiler and steam turbine in the combined cycle are relatively slow, resulting in the start-up and shutdown time of the combined cycle unit being mainly limited by the steam cycle. During the startup process, the gas turbine needs to adapt to the stages of waste heat boiler temperature and pressure increase, steam pipe warm-up, steam turbine speed increase, partial speed warm-up, load warm-up, and steam turbine load increase, which requires a certain amount of adaptation and waiting time.

[0003] Furthermore, the operating characteristics of gas turbines are significantly affected by ambient atmospheric parameters. Changes in ambient temperature directly alter the exhaust temperature and flow rate of the gas turbine, thereby affecting the operating characteristics and startup performance of the combined cycle unit. Currently, gas turbine load or gas turbine exhaust temperature control is commonly used to achieve coordinated operation of the gas turbine and steam cycle under different startup conditions, such as cold, warm, and hot states. However, there is still room for optimization in the matching relationship between gas turbine exhaust parameters and bottoming cycle steam parameters.

[0004] Although the startup time of a combined cycle unit primarily depends on the performance of the bottoming cycle equipment, the matching of the turbine exhaust parameters with the bottoming cycle steam parameters during startup can still affect overall startup efficiency. This is especially true during cold startups, when the turbine power is low and exhaust parameters are susceptible to factors such as ambient temperature, pressure, humidity, and the angle of the inlet adjustable guide vanes, making precise control difficult. This can not only prolong the unit's startup time but also increase pollutant emissions and even trigger problems such as combustion oscillation and compressor surge, compromising the unit's safe operation.

[0005] In summary, how to design an efficient and safe startup control method for gas-steam combined cycle units is an urgent problem that needs to be solved. Summary of the Invention

[0006] The present application aims to solve one of the technical problems in the related art at least to a certain extent.

[0007] To this end, the first purpose of this application is to propose a gas-steam combined cycle unit startup control method to solve the problems of prolonged startup time and reduced operating safety caused by insufficient matching between the exhaust parameters of the gas engine and the bottom cycle steam parameters during the startup of the combined cycle unit in the existing technology.

[0008] The second objective of the present application is to provide a startup control device for a gas-steam combined cycle unit.

[0009] The third objective of this application is to provide an electronic device.

[0010] The fourth object of this application is to provide a computer-readable storage medium.

[0011] To achieve the above objectives, the first embodiment of the present application provides a gas-steam combined cycle unit startup control method, comprising:

[0012] Acquiring real-time operating data of the gas engine, and determining the exhaust temperature and exhaust flow rate of the gas engine based on the real-time operating data of the gas engine;

[0013] Obtain gas turbine exhaust parameter adjustment instructions based on ambient atmospheric parameters and bottoming cycle equipment constraints;

[0014] Dynamically adjusting the opening of the adjustable guide vanes at the inlet of the gas turbine based on the gas turbine exhaust parameter adjustment instruction;

[0015] The matching relationship between the exhaust parameters of the gas turbine and the bottoming cycle steam parameters is optimized by utilizing the real-time metal temperature of the waste heat boiler and the warm-up status of the steam turbine.

[0016] Preferably, determining the exhaust temperature and exhaust flow rate of the combustion engine according to the real-time operation data of the combustion engine includes:

[0017] Build a gas turbine exhaust temperature control module based on the gas turbine design operating conditions and test data to obtain the control value and limit value of the exhaust temperature;

[0018] Determine whether the current exhaust temperature exceeds the limit value based on the exhaust temperature measurement value in the real-time operation data of the gas turbine;

[0019] If the limit value is exceeded, the exhaust temperature regulation mechanism is triggered to generate an exhaust temperature adjustment instruction;

[0020] The relationship between the opening of the adjustable guide vanes at the gas turbine inlet and the exhaust flow rate is analyzed based on the characteristic curves of the compressor components to generate the exhaust flow optimization control value.

[0021] Preferably, the compressor component characteristic characterization formula is:

[0022] π=f(IGV,n red ,m red )

[0023]

[0024] π limit =f(IGV,n red )

[0025] Where π is the compressor pressure ratio, IGV is the compressor inlet adjustable guide vane, and n red is the reduced speed, m red is the equivalent flow rate, n is the physical speed, m is the physical mass flow rate, t0 is the atmospheric temperature, is the atmospheric humidity, p0 is the atmospheric pressure, π limit It is the compressor operating limit pressure ratio under various operating conditions.

[0026] Preferably, obtaining the combustion engine exhaust parameter adjustment instruction based on the ambient atmospheric parameters and the bottoming cycle equipment restriction conditions includes:

[0027] Collect ambient atmospheric temperature, humidity, and pressure data, and combine them with the turbine operating characteristics to obtain the initial adjustment range of the turbine exhaust temperature and exhaust flow rate;

[0028] Obtain the constraints of the bottoming cycle equipment on the exhaust parameters of the gas turbine based on the temperature and pressure increase rates of the waste heat boiler and the steam turbine warm-up requirements;

[0029] A combustion engine exhaust parameter adjustment instruction is generated based on the combustion engine exhaust temperature, the initial adjustment range of the exhaust flow rate, and the exhaust parameter restriction condition.

[0030] Preferably, dynamically adjusting the opening of the adjustable guide vanes at the inlet of the gas turbine based on the gas turbine exhaust parameter adjustment instruction includes:

[0031] Calculate the target opening of the adjustable guide vanes at the inlet of the gas turbine based on the gas turbine exhaust parameter adjustment instruction;

[0032] Generating an opening adjustment step length using a deviation value between the target opening and the current guide vane opening;

[0033] Based on the opening adjustment step size and the gas turbine operation stability requirement, adjusting the gas turbine inlet adjustable guide vane opening to the target opening;

[0034] Real-time monitoring of the exhaust flow rate of the gas turbine exhaust thermometer verifies the adjustment effect.

[0035] Preferably, the method of optimizing the matching relationship between the exhaust parameters of the combustion engine and the bottoming cycle steam parameters by utilizing the real-time metal temperature of the waste heat boiler and the warm-up state of the steam turbine includes:

[0036] Collect the metal temperature distribution data of the waste heat boiler and calculate the variation range of the bottom cycle steam parameters based on the steam turbine warm-up rate requirement;

[0037] Evaluating the matching degree between the exhaust parameters of the gas turbine and the variation range of the bottoming cycle steam parameters based on the real-time data of the gas turbine exhaust temperature and exhaust flow rate;

[0038] If the matching degree is lower than the preset threshold, the engine exhaust parameter re-adjustment instruction is generated to optimize the matching relationship.

[0039] Preferably, it also includes:

[0040] Based on the real-time data of gas turbine exhaust temperature and exhaust flow, a characteristic curve of gas turbine exhaust parameters changing with ambient atmospheric parameters is drawn;

[0041] Generate a gas turbine exhaust parameter optimization strategy table based on the operating status of the bottom cycle equipment;

[0042] The characteristic curve and the optimization strategy table are stored in the control system for reference in subsequent startup processes.

[0043] To achieve the above-mentioned objectives, a second embodiment of the present application provides a gas-steam combined cycle unit startup control device, comprising:

[0044] A data acquisition module is used to acquire real-time operation data of the gas engine and determine the exhaust temperature and exhaust flow rate of the gas engine based on the real-time operation data of the gas engine;

[0045] The instruction generation module obtains the gas turbine exhaust parameter adjustment instructions based on the ambient atmospheric parameters and bottoming cycle equipment constraints;

[0046] A dynamic adjustment module dynamically adjusts the opening of the adjustable guide vanes at the inlet of the gas turbine based on the gas turbine exhaust parameter adjustment instruction;

[0047] The optimization module uses the real-time metal temperature of the waste heat boiler and the warm-up status of the steam turbine to optimize the matching relationship between the gas turbine exhaust parameters and the bottoming cycle steam parameters.

[0048] To achieve the above-mentioned purpose, a third embodiment of the present application provides an electronic device, comprising: a processor, and a memory communicatively connected to the processor;

[0049] The memory stores computer-executable instructions;

[0050] The processor executes the computer-executable instructions stored in the memory to implement any of the above methods.

[0051] To achieve the above-mentioned purpose, the fourth embodiment of the present application proposes a computer-readable storage medium, including computer-executable instructions stored in the computer-readable storage medium, and the computer-executable instructions are used to implement any of the methods described above when executed by a processor.

[0052] The present application provides a gas-steam combined cycle unit startup control method, which collects key operating data during the startup process of the combined cycle unit, including the gas turbine exhaust temperature, exhaust flow, waste heat boiler metal temperature, and steam turbine warm-up status. Based on these data, the optimization effect of the matching relationship between the gas turbine exhaust parameters and the bottom cycle steam parameters is evaluated. If the optimization effect does not reach the preset target, the gas turbine exhaust parameter optimization strategy table is corrected to improve the control accuracy of the subsequent startup process. This process ensures that the combined cycle unit can achieve efficient startup under different operating conditions by continuously optimizing the control strategy.

[0053] Additional aspects and advantages of the present application will be given in part in the description below, and in part will become apparent from the description below, or will be learned through practice of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0054] The above and / or additional aspects and advantages of the present application will become apparent and easily understood from the following description of the embodiments in conjunction with the accompanying drawings, in which:

[0055] Figure 1 This is a flow chart of a first specific embodiment of a gas-steam combined cycle unit startup control method provided by the present invention;

[0056] Figure 2 This is a flow chart of a second specific embodiment of a gas-steam combined cycle unit startup control method provided by the present invention;

[0057] Figure 3 This is a structural block diagram of a gas-steam combined cycle unit startup control device provided by an embodiment of the present invention. DETAILED DESCRIPTION

[0058] The core of the present invention is to provide a gas-steam combined cycle unit startup control method, device, electronic equipment and storage medium. By obtaining the real-time operation data of the gas turbine and combining it with the ambient atmospheric parameters and the bottom cycle equipment restriction conditions, the gas turbine exhaust parameter adjustment instructions are generated, and the coordinated control of the gas turbine exhaust temperature and exhaust flow is achieved by dynamically adjusting the adjustable guide vane opening at the gas turbine inlet.

[0059] In order to enable those skilled in the art to better understand the present invention, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments. Obviously, the embodiments described are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present invention.

[0060] Please refer to Figure 1 , Figure 1This is a flow chart of a first specific embodiment of a gas-steam combined cycle unit startup control method provided by the present invention; the specific operating steps are as follows:

[0061] Step S101: acquiring real-time operating data of the gas engine, and determining the exhaust temperature and exhaust flow rate of the gas engine according to the real-time operating data of the gas engine;

[0062] Step S102: obtaining a combustion engine exhaust parameter adjustment instruction based on ambient atmospheric parameters and bottoming cycle equipment constraints;

[0063] Step S103: dynamically adjusting the opening of the adjustable guide vanes at the inlet of the gas turbine based on the gas turbine exhaust parameter adjustment instruction;

[0064] Step S104: Optimizing the matching relationship between the exhaust parameters of the combustion engine and the bottoming cycle steam parameters by utilizing the real-time metal temperature of the waste heat boiler and the warm-up state of the steam turbine.

[0065] Based on the above embodiment, this embodiment describes step S101 in detail:

[0066] In one embodiment, a gas turbine exhaust temperature control module is constructed based on the gas turbine design operating conditions and test data to obtain the control value and limit value of the exhaust temperature; based on the exhaust temperature measurement value in the real-time operation data of the gas turbine, it is determined whether the current exhaust temperature exceeds the limit value; if it exceeds the limit value, the exhaust temperature regulation mechanism is triggered to generate an exhaust temperature adjustment instruction; based on the characteristic curve of the compressor components, the relationship between the opening of the adjustable guide vanes at the gas turbine inlet and the exhaust flow is analyzed to generate an exhaust flow optimization control value.

[0067] The compressor component characteristic characterization formula is:

[0068] π=f(IGV,n red ,m red )

[0069]

[0070] π limit =f(IGV,n red )

[0071] Where π is the compressor pressure ratio, IGV is the compressor inlet adjustable guide vane, and n red is the reduced speed, m red is the equivalent flow rate, n is the physical speed, m is the physical mass flow rate, t0 is the atmospheric temperature, is the atmospheric humidity, p0 is the atmospheric pressure, π limit It is the compressor operating limit pressure ratio under various operating conditions.

[0072] Specifically, the real-time operating data of the gas turbine is obtained. The control system collects data such as the gas turbine speed, compressor inlet air flow, combustion chamber fuel flow, and exhaust temperature through sensors distributed in various key parts of the gas turbine, and transmits these signals to the central processing unit. The central processing unit constructs an exhaust temperature control module based on the gas turbine design operating conditions and related test data. This module is used to clarify the control value and limit value of the exhaust temperature. When it is detected that the gas turbine exhaust temperature exceeds the preset limit value, the system triggers the regulation mechanism and generates an adjustment instruction. At the same time, in order to accurately control the exhaust flow, the system analyzes the nonlinear relationship between the opening of the adjustable guide vanes at the gas turbine inlet and the exhaust flow. This relationship is obtained through the characteristic curve of the compressor components, thereby generating an optimized control value for the exhaust flow. The above operations ensure the precise control of the gas turbine exhaust parameters and provide a theoretical basis for subsequent dynamic adjustments.

[0073] Based on the above embodiment, this embodiment describes step S102 in detail:

[0074] In one embodiment, ambient atmospheric temperature, humidity, and pressure data are collected, and combined with the operating characteristics of the gas turbine, an initial adjustment range of the gas turbine exhaust temperature and exhaust flow rate is obtained; based on the heating and pressure increase rate of the waste heat boiler and the warm-up requirements of the steam turbine, the restriction conditions of the bottom cycle equipment on the gas turbine exhaust parameters are obtained; based on the gas turbine exhaust temperature, the initial adjustment range of the exhaust flow rate, and the restriction conditions of the exhaust parameters, a gas turbine exhaust parameter adjustment instruction is generated.

[0075] Specifically, the specific implementation steps for generating a gas turbine exhaust parameter adjustment instruction by combining the ambient atmospheric parameters and the bottom cycle equipment constraints are as follows. Ambient atmospheric parameters include ambient atmospheric temperature, humidity, and pressure data, which are collected by meteorological sensors arranged outside the gas turbine and input into the control system. The control system calculates the initial adjustment range of the gas turbine exhaust temperature and exhaust flow rate based on the gas turbine operating conditions. At the same time, the bottom cycle equipment also has certain constraints on the gas turbine exhaust parameters, such as the waste heat boiler temperature and pressure increase rate requirements and the steam turbine warm-up requirements. These constraints are determined by the design parameters and operating specifications of the bottom cycle equipment and are input into the control system as constraints. The control system combines the ambient atmospheric parameters with the bottom cycle equipment constraints to generate a gas turbine exhaust parameter adjustment instruction. This process ensures that the adjustment of the gas turbine exhaust parameters meets both external environmental factors and internal equipment performance requirements.

[0076] Based on the above embodiment, this embodiment describes step S103 in detail:

[0077] In one embodiment, a target opening of the adjustable guide vanes at the inlet of the gas turbine is calculated based on a gas turbine exhaust parameter adjustment instruction; an opening adjustment step is generated using a deviation value between the target opening and the current guide vane opening; based on the opening adjustment step and the gas turbine operation stability requirement, the opening of the adjustable guide vanes at the inlet of the gas turbine is adjusted to the target opening; and changes in the exhaust flow rate of the gas turbine exhaust thermometer are monitored in real time to verify the adjustment effect.

[0078] Specifically, a specific implementation method for dynamically adjusting the opening of the adjustable guide vanes at the gas turbine inlet according to the adjustment instruction. The control system calculates the target opening of the adjustable guide vanes at the gas turbine inlet based on the gas turbine exhaust parameter adjustment instruction. The deviation value between the target opening and the current opening is calculated by the algorithm module in the control system, and then the opening adjustment step is generated. The design of the opening adjustment step must take into account the gas turbine operation stability requirements to ensure that the adjustment process is smooth and controllable. During the adjustment process, the control system gradually adjusts the opening of the adjustable guide vanes at the gas turbine inlet to the target value. At the same time, the control system monitors the changes in the gas turbine exhaust temperature and exhaust flow in real time to verify whether the adjustment effect meets expectations. This process achieves precise control of the opening of the adjustable guide vanes at the gas turbine inlet, ensuring that the gas turbine exhaust parameters are always in the best matching state.

[0079] Based on the above embodiment, this embodiment describes step S104 in detail:

[0080] In one embodiment, the metal temperature distribution data of the waste heat boiler is collected, and the variation range of the bottom cycle steam parameters is calculated in combination with the steam turbine warm-up rate requirement; the degree of matching between the gas turbine exhaust parameters and the variation range of the bottom cycle steam parameters is evaluated based on the real-time data of the gas turbine exhaust temperature and exhaust flow rate; if the matching degree is lower than a preset threshold, a gas turbine exhaust parameter readjustment instruction is generated to optimize the matching relationship.

[0081] Specifically, during the dynamic adjustment process, it is also necessary to further optimize the matching relationship between the gas turbine exhaust parameters and the bottom cycle steam parameters by real-time monitoring of the waste heat boiler metal temperature and the steam turbine warm-up status. The waste heat boiler metal temperature distribution data is collected by temperature sensors arranged at key positions of the waste heat boiler and input into the control system. The control system calculates the dynamic change range of the bottom cycle steam parameters in combination with the steam turbine warm-up rate requirements. Subsequently, the control system evaluates the matching degree between the gas turbine exhaust parameters and the bottom cycle steam parameters based on the real-time data of the gas turbine exhaust temperature and exhaust flow rate. If the matching degree is lower than the preset threshold, the control system generates a gas turbine exhaust parameter re-adjustment instruction to further optimize the matching relationship. This process adjusts the gas turbine exhaust parameters in a timely manner by dynamically monitoring the operating status of the bottom cycle equipment to ensure that the combined cycle unit always maintains efficient operation during the startup process.

[0082] In one embodiment, a characteristic curve of the combustion engine exhaust parameters changing with the ambient atmospheric parameters is drawn based on the real-time data of the combustion engine exhaust temperature and exhaust flow; a combustion engine exhaust parameter optimization strategy table is generated in combination with the operating status of the bottom cycle equipment; and the characteristic curve and the optimization strategy table are stored in the control system for reference in the subsequent startup process.

[0083] Specifically, after completing the optimization of the matching relationship between the gas turbine exhaust parameters and the bottom cycle steam parameters, the control system draws the characteristic curve of the gas turbine exhaust parameters changing with the ambient atmospheric parameters based on the real-time data of the gas turbine exhaust temperature and exhaust flow. The drawing of the characteristic curve needs to comprehensively consider the changing rules of the gas turbine exhaust parameters under different ambient atmospheric conditions, and generate a smooth curve through the data fitting algorithm. Subsequently, the control system generates a gas turbine exhaust parameter optimization strategy table based on the operating status of the bottom cycle equipment. The optimization strategy table contains the target opening of the gas turbine inlet adjustable guide vanes and the corresponding gas turbine exhaust parameter adjustment instructions under different ambient atmospheric parameters. The characteristic curve and the optimization strategy table are stored in the control system to provide a reference for the subsequent startup process. This process lays the foundation for the intelligent control of the combined cycle unit by accumulating historical data and optimization experience.

[0084] This embodiment provides a startup control method for a gas-steam combined cycle unit, which uses real-time operating data of the gas turbine to accurately control the exhaust temperature and exhaust flow rate, while introducing ambient atmospheric parameters and bottom cycle equipment restrictions as constraints to generate gas turbine exhaust parameter adjustment instructions. By dynamically adjusting the opening of the adjustable guide vanes at the gas turbine inlet, the matching relationship between the gas turbine exhaust parameters and the bottom cycle steam parameters is optimized while ensuring efficient operation of the gas turbine. This process effectively shortens the startup time of the combined cycle unit, reduces pollutant emissions, avoids potential risks such as combustion oscillation or compressor surge, and improves the safety and economy of the unit operation.

[0085] Based on the above embodiment, this embodiment describes a gas-steam combined cycle unit startup control method. Figure 2 As shown, the details are as follows:

[0086] By proposing a gas turbine exhaust parameter control method based on inlet adjustable guide vanes (IGVs) control optimization, while ensuring efficient and safe operation of the gas turbine, further optimization matching with the combined cycle bottoming cycle steam parameters is achieved, and the startup time of the combined cycle unit is optimized.

[0087] (1) Compressor component characteristics

[0088] Based on the compressor design and relevant test data, the compressor operating limit pressure ratio line of the compressor component characteristics and surge margin requirements is obtained, covering all operating conditions of the gas turbine. The compressor component characteristics and maximum pressure ratio limit can usually be characterized as follows:

[0089] π=f(IGV,n red ,m red )

[0090]

[0091] π limit =f(IGV,n red )

[0092] Where: π is the compressor pressure ratio, IGV is the compressor inlet adjustable guide vane, n red is the reduced speed, m red is the equivalent flow rate, n is the physical speed, m is the physical mass flow rate, t0 is the atmospheric temperature, is the atmospheric humidity, p0 is the atmospheric pressure, π limit It is the compressor operating limit pressure ratio under various operating conditions.

[0093] (2) Gas turbine exhaust temperature control module

[0094] Based on the design operating conditions of the gas turbine, the gas turbine components and the limit requirements of the bottom cycle equipment, the gas turbine exhaust temperature control value T in the gas turbine exhaust temperature control module is defined. 4c0 and the limit value T 4l0 During the operation of the gas turbine, ensure that the exhaust temperature of the gas turbine does not exceed the limit value T 4l0 .

[0095] (3) Gas turbine exhaust flow control module

[0096] Based on the above operating restrictions, the gas turbine thermal cycle calculation tool is used to analyze the optimal control value of the exhaust flow during the start-up / load increase of the gas turbine to meet the bottom cycle steam parameter requirements (a characteristic diagram of the relationship between IGVs and environmental conditions can be formed), and the gas turbine exhaust flow control value module is formed. It can usually be characterized as:

[0097]

[0098] An embodiment of the present invention provides a startup control method for a gas-steam combined cycle unit. Based on real-time gas turbine operating measurement data, the gas turbine exhaust temperature control module precisely controls the gas turbine exhaust temperature while introducing gas turbine exhaust flow IGVs (IGVs) to control the exhaust flow. This method meets the requirements for matching exhaust temperature and flow with steam parameters during combined cycle startup (a characteristic diagram of the relationship between IGVs and environmental conditions can be formed). While ensuring that the gas turbine exhaust temperature does not exceed the specified temperature and that the gas turbine operates efficiently, it further optimizes the startup time of the combined cycle unit and increases the amount of electricity connected to the grid during startup. The relevant control constants in the gas turbine exhaust temperature control module are defined based on the operating restrictions of the gas turbine and its key components and the gas turbine's design operating conditions.

[0099] Please refer to Figure 3 , Figure 3 This is a structural block diagram of a gas-steam combined cycle unit startup control device provided by an embodiment of the present invention; the specific device may include:

[0100] The data acquisition module 100 acquires the real-time operation data of the gas engine and determines the exhaust temperature and exhaust flow rate of the gas engine according to the real-time operation data of the gas engine;

[0101] The instruction generation module 200 obtains the gas turbine exhaust parameter adjustment instruction based on the ambient atmospheric parameters and the bottoming cycle equipment constraints;

[0102] A dynamic adjustment module 300 dynamically adjusts the opening of the adjustable guide vanes at the inlet of the gas turbine based on the gas turbine exhaust parameter adjustment instruction;

[0103] The optimization module 400 optimizes the matching relationship between the exhaust parameters of the combustion engine and the bottoming cycle steam parameters by using the real-time metal temperature of the waste heat boiler and the warm-up state of the steam turbine.

[0104] A gas-steam combined cycle unit startup control device of this embodiment is used to implement the aforementioned gas-steam combined cycle unit startup control method. Therefore, the specific implementation method of a gas-steam combined cycle unit startup control device can be seen in the embodiment part of the gas-steam combined cycle unit startup control method in the above text. For example, the data acquisition module 100, the instruction generation module 200, the dynamic adjustment module 300, and the optimization module 400 are respectively used to implement steps S101, S102, S103, and S104 in the aforementioned gas-steam combined cycle unit startup control method. Therefore, its specific implementation method can refer to the description of the corresponding embodiments of each part and will not be repeated here.

[0105] In order to implement the above embodiments, the present application also proposes an electronic device, comprising: a processor, and a memory communicatively connected to the processor; the memory stores computer-executable instructions; the processor executes the computer-executable instructions stored in the memory to implement the method provided by the above embodiments.

[0106] In order to implement the above embodiments, the present application also proposes a computer-readable storage medium, in which computer-executable instructions are stored. When the computer-executable instructions are executed by a processor, they are used to implement the methods provided by the above embodiments.

[0107] In order to implement the above embodiments, the present application also proposes a computer program product, including a computer program, which implements the methods provided by the above embodiments when executed by a processor.

[0108] The collection, storage, use, processing, transmission, provision and disclosure of user personal information involved in this application are in compliance with relevant laws and regulations and do not violate public order and good morals.

[0109] It is important to note that personal information collected from users should be used for legitimate and reasonable purposes and should not be shared or sold beyond these legitimate uses. Furthermore, such collection / sharing should be conducted only after receiving the user's informed consent, including but not limited to notifying the user to read the user agreement / user notice and sign an agreement / authorization that includes the relevant user information before using the feature. Furthermore, any necessary steps must be taken to safeguard and secure access to such personal information and ensure that others with access to personal information comply with its privacy policy and procedures.

[0110] This application contemplates providing implementations that allow users to selectively block the use or access of personal information data. Specifically, this disclosure contemplates providing hardware and / or software to prevent or block access to such personal information data. Risks can be minimized by limiting data collection and deleting data once it is no longer needed. Furthermore, where applicable, such personal information can be de-identified to protect user privacy.

[0111] In the descriptions of the foregoing embodiments, the reference terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" mean that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, unless they are mutually inconsistent.

[0112] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of such features. Throughout the description of this application, "plurality" means at least two, for example, two, three, etc., unless otherwise specifically defined.

[0113] Any process or method description in a flowchart or otherwise described herein may be understood to represent a module, segment or portion of code comprising one or more executable instructions for implementing the steps of a custom logical function or process, and the scope of the preferred embodiments of the present application includes alternative implementations in which functions may be performed out of the order shown or discussed, including performing functions in a substantially simultaneous manner or in the reverse order depending on the functions involved, which should be understood by those skilled in the art to which the embodiments of the present application belong.

[0114] The logic and / or steps represented in the flowcharts or otherwise described herein, for example, can be considered as a sequenced list of executable instructions for implementing the logical functions, and can be embodied in any computer-readable medium for use by, or in conjunction with, an instruction execution system, apparatus, or device (e.g., a computer-based system, a system including a processor, or other system that can fetch and execute instructions from an instruction execution system, apparatus, or device). For purposes of this specification, a "computer-readable medium" can be any device that can contain, store, communicate, propagate, or transport a program for use by, or in conjunction with, an instruction execution system, apparatus, or device. More specific examples (a non-exhaustive list) of computer-readable media include the following: an electrical connection with one or more wires (electronic devices), a portable computer disk cartridge (magnetic device), random access memory (RAM), read-only memory (ROM), erasable and programmable read-only memory (EPROM or flash memory), fiber optic devices, and a portable compact disc read-only memory (CDROM). Furthermore, the computer-readable medium may even be paper or other suitable medium on which the program is printed, since the program may be obtained electronically, for example, by optically scanning the paper or other medium and then editing, interpreting or processing it in another suitable manner if necessary, and then storing it in a computer memory.

[0115] It should be understood that various parts of the present application can be implemented using hardware, software, firmware, or a combination thereof. In the above embodiments, multiple steps or methods can be implemented using software or firmware stored in a memory and executed by a suitable instruction execution system. For example, if implemented using hardware, as in another embodiment, any one of the following technologies known in the art or a combination thereof can be used to implement: a discrete logic circuit having a logic gate circuit for implementing a logic function on a data signal, an application-specific integrated circuit having a suitable combination of logic gate circuits, a programmable gate array (PGA), a field programmable gate array (FPGA), etc.

[0116] Those skilled in the art will understand that all or part of the steps in the method of the above embodiment can be completed by instructing related hardware through a program, and the program can be stored in a computer-readable storage medium. When the program is executed, it includes one or a combination of the steps of the method embodiment.

[0117] In addition, the functional units in the various embodiments of the present application may be integrated into a processing module, or each unit may exist physically separately, or two or more units may be integrated into a module. The above-mentioned integrated module may be implemented in the form of hardware or in the form of a software functional module. If the integrated module is implemented in the form of a software functional module and sold or used as an independent product, it may also be stored in a computer-readable storage medium.

[0118] The storage medium mentioned above may be a read-only memory, a magnetic disk, or an optical disk, etc. Although the embodiments of the present application have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present application. Persons skilled in the art may make changes, modifications, substitutions, and variations to the above embodiments within the scope of the present application.

Claims

1. A gas-steam combined cycle unit startup control method, characterized in that: include: Acquiring real-time operating data of the gas engine, and determining the exhaust temperature and exhaust flow rate of the gas engine based on the real-time operating data of the gas engine; Obtain gas turbine exhaust parameter adjustment instructions based on ambient atmospheric parameters and bottoming cycle equipment constraints; Dynamically adjusting the opening of the adjustable guide vanes at the inlet of the gas turbine based on the gas turbine exhaust parameter adjustment instruction; The matching relationship between the exhaust parameters of the gas turbine and the bottoming cycle steam parameters is optimized by utilizing the real-time metal temperature of the waste heat boiler and the warm-up status of the steam turbine.

2. The gas-steam combined cycle unit startup control method according to claim 1, characterized in that: Determining the exhaust temperature and exhaust flow rate of the combustion engine according to the real-time operation data of the combustion engine includes: Build a gas turbine exhaust temperature control module based on the gas turbine design operating conditions and test data to obtain the control value and limit value of the exhaust temperature; Determine whether the current exhaust temperature exceeds the limit value based on the exhaust temperature measurement value in the real-time operation data of the gas turbine; If the limit value is exceeded, the exhaust temperature regulation mechanism is triggered to generate an exhaust temperature adjustment instruction; The relationship between the opening of the adjustable guide vanes at the gas turbine inlet and the exhaust flow rate is analyzed based on the characteristic curves of the compressor components to generate the exhaust flow optimization control value.

3. The gas-steam combined cycle unit startup control method according to claim 2, characterized in that: The compressor component characteristic characterization formula is: π=f(IGV,n red ,m red ) p limit =f(IGV,n red ) Where π is the compressor pressure ratio, IGV is the compressor inlet adjustable guide vane, and n red is the reduced speed, m red is the equivalent flow rate, n is the physical speed, m is the physical mass flow rate, t0 is the atmospheric temperature, is the atmospheric humidity, p0 is the atmospheric pressure, π limit It is the compressor operating limit pressure ratio under various operating conditions.

4. The gas-steam combined cycle unit startup control method according to claim 1, characterized in that: The step of obtaining the combustion engine exhaust parameter adjustment instruction based on the ambient atmospheric parameters and the bottoming cycle equipment restriction conditions includes: Collect ambient atmospheric temperature, humidity, and pressure data, and combine them with the turbine operating characteristics to obtain the initial adjustment range of the turbine exhaust temperature and exhaust flow rate; Obtain the constraints of the bottoming cycle equipment on the exhaust parameters of the gas turbine based on the waste heat boiler temperature and pressure increase rates and the steam turbine warm-up requirements; A combustion engine exhaust parameter adjustment instruction is generated based on the combustion engine exhaust temperature, the initial adjustment range of the exhaust flow rate, and the exhaust parameter restriction condition.

5. The gas-steam combined cycle unit startup control method according to claim 1, characterized in that: The dynamically adjusting the opening of the adjustable guide vanes at the inlet of the gas turbine based on the gas turbine exhaust parameter adjustment instruction includes: Calculate the target opening of the adjustable guide vanes at the inlet of the gas turbine based on the gas turbine exhaust parameter adjustment instruction; Generating an opening adjustment step length using a deviation value between the target opening and the current guide vane opening; Based on the opening adjustment step size and the gas turbine operation stability requirement, adjusting the opening of the gas turbine inlet adjustable guide vane to the target opening; Real-time monitoring of the exhaust flow rate of the gas turbine exhaust thermometer verifies the adjustment effect.

6. The gas-steam combined cycle unit startup control method according to claim 1, characterized in that: The method of optimizing the matching relationship between the exhaust parameters of the combustion engine and the bottoming cycle steam parameters by utilizing the real-time metal temperature of the waste heat boiler and the warm-up state of the steam turbine includes: Collect the metal temperature distribution data of the waste heat boiler and calculate the variation range of the bottom cycle steam parameters based on the steam turbine warm-up rate requirement; Evaluating the matching degree between the exhaust parameters of the gas turbine and the variation range of the bottoming cycle steam parameters based on the real-time data of the gas turbine exhaust temperature and exhaust flow rate; If the matching degree is lower than the preset threshold, the engine exhaust parameter re-adjustment instruction is generated to optimize the matching relationship.

7. The gas-steam combined cycle unit startup control method according to claim 1, characterized in that: Also includes: Based on the real-time data of gas turbine exhaust temperature and exhaust flow, a characteristic curve of gas turbine exhaust parameters changing with ambient atmospheric parameters is drawn; Generate a gas turbine exhaust parameter optimization strategy table based on the operating status of the bottom cycle equipment; The characteristic curve and the optimization strategy table are stored in the control system for reference in subsequent startup processes.

8. A gas-steam combined cycle unit startup control device, characterized in that: include: A data acquisition module is used to acquire real-time operation data of the gas engine and determine the exhaust temperature and exhaust flow rate of the gas engine according to the real-time operation data of the gas engine; The instruction generation module obtains the gas turbine exhaust parameter adjustment instructions based on the ambient atmospheric parameters and bottoming cycle equipment constraints; A dynamic adjustment module dynamically adjusts the opening of the adjustable guide vanes at the inlet of the gas turbine based on the gas turbine exhaust parameter adjustment instruction; The optimization module uses the real-time metal temperature of the waste heat boiler and the warm-up status of the steam turbine to optimize the matching relationship between the gas turbine exhaust parameters and the bottoming cycle steam parameters.

9. An electronic device, characterized in that: include: a processor, and a memory communicatively connected to the processor; The memory stores computer-executable instructions; The processor executes the computer-executable instructions stored in the memory to implement the method according to any one of claims 1 to 7.

10. A computer-readable storage medium, characterized in that The computer-readable storage medium stores computer-executable instructions, which are used to implement the method according to any one of claims 1 to 7 when executed by a processor.

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