A method for determining a heat supply operation condition of a gas turbine combined cycle unit

Abstract

The application discloses a method for determining a heat supply operation condition of a gas turbine combined cycle unit, which comprises the following steps: firstly, obtaining an actual steam extraction amount of a steam turbine, and obtaining a known steam extraction condition line and a minimum exhaust amount line of the steam turbine; secondly, determining a high-pressure air intake amount and a minimum power generation of the steam turbine under the obtained actual steam extraction amount of the steam turbine according to the obtained known steam extraction condition line and the minimum exhaust amount line; thirdly, obtaining a standard condition gas intake amount and a minimum power generation of a gas turbine according to the high-pressure air intake amount of the steam turbine; and finally, obtaining a minimum power generation of the gas turbine combined cycle unit under the obtained actual steam extraction amount of the steam turbine according to the minimum power generation of the steam turbine and the minimum power generation of the gas turbine, so as to complete the determination of the heat supply operation condition of the gas turbine combined cycle unit.

Description

Technical Field

[0001] This invention belongs to the technical field of strategies and methods for optimizing gas turbine operation, and relates to a method for determining the heating operation conditions of a combined cycle gas turbine unit. Background Technology

[0002] Gas turbine combined cycle units, with their advantages of high energy efficiency, ease of peak shaving, environmental friendliness, and small footprint, have gradually become an important power source in China's power generation sector. Currently, most gas turbine units are used for urban heating, and this use is growing rapidly.

[0003] Due to the limited price of natural gas, combined cycle gas turbine (CCT) units are currently operating at a loss. Therefore, while undertaking heating tasks, CCT units should coordinate with grid dispatch to minimize power generation. Determining the minimum power output required to maintain heating under a given heating demand has become a key concern for operators. However, relevant strategies and methods are currently lacking, and no effective solutions exist. Summary of the Invention

[0004] To address the problems existing in the prior art, the present invention provides a method for determining the heating operation conditions of a gas turbine combined cycle unit, thereby effectively solving the technical problem in the prior art that the minimum power generation capacity of a gas turbine combined cycle unit to maintain a certain heating supply cannot be effectively determined.

[0005] This invention is achieved through the following technical solution:

[0006] A method for determining the heating operation conditions of a gas turbine combined cycle unit includes the following steps:

[0007] S1: Obtain the actual steam extraction rate of the steam turbine, the known steam extraction condition line of the steam turbine, and the minimum exhaust rate line;

[0008] S2: Based on the known extraction steam condition line and minimum exhaust steam line of the steam turbine, determine the high-pressure intake steam volume and minimum power generation of the steam turbine under the obtained actual extraction steam volume conditions of the steam turbine.

[0009] S3: Obtain the standard condition gas intake volume and minimum power generation capacity of the gas turbine based on the high pressure intake volume of the steam turbine;

[0010] S4: Based on the minimum power generation of the steam turbine and the minimum power generation of the gas turbine, obtain the minimum power generation of the gas turbine combined cycle unit under the obtained actual steam extraction rate of the steam turbine, and combine it with the standard gas intake rate of the gas turbine to determine the heating operation condition of the gas turbine combined cycle unit.

[0011] Preferably, in step S1, the known extraction steam condition line and the minimum exhaust steam line of the steam turbine are obtained through the thermal condition diagram of the steam turbine.

[0012] Preferably, the known extraction steam operating conditions of the steam turbine include the pure condensing operating condition and the operating conditions under different extraction steam flow rates.

[0013] Preferably, in step S3, the standard gas intake of the gas turbine is obtained through the standard gas intake model of the gas turbine combined cycle unit.

[0014] Preferably, the standard-condition gas intake volume model is obtained by performing a first training on a BP neural network model. During the first training process, the input is the high-pressure steam intake volume of the steam turbine, and the output is the standard-condition gas intake volume of the gas turbine.

[0015] Preferably, in step S3, the minimum power generation of the gas turbine is obtained through the gas turbine power generation model of the gas turbine combined cycle unit.

[0016] Preferably, the gas turbine power generation model is obtained by performing a second training on a BP neural network model; during the second training process, the inputs are high-pressure steam inlet flow, gas turbine speed, standard condition gas inlet flow, IGV valve opening, gas temperature, and air temperature, and the output is the gas turbine power generation.

[0017] A system for determining the heating operation conditions of a gas turbine combined cycle unit includes:

[0018] The data acquisition module is used to acquire the actual steam extraction volume of the steam turbine, and to acquire the known steam extraction operating condition line and the minimum exhaust volume line of the steam turbine.

[0019] The first data processing module is used to determine the high-pressure intake and minimum power generation of the steam turbine under the obtained actual steam extraction conditions based on the known extraction steam condition line and minimum exhaust steam line of the steam turbine.

[0020] The second data processing module is used to obtain the standard condition gas intake volume and minimum power generation of the gas turbine based on the high pressure intake volume of the steam turbine.

[0021] The third data processing module is used to obtain the minimum power generation of the gas turbine combined cycle unit under the obtained actual steam extraction volume of the steam turbine based on the minimum power generation of the steam turbine and the minimum power generation of the gas turbine.

[0022] The result output module is used to output the minimum power generation of the gas turbine combined cycle unit under the obtained actual steam extraction volume of the steam turbine and the standard gas intake volume of the gas turbine, and to determine the heating operation condition of the gas turbine combined cycle unit.

[0023] A terminal device includes a memory, a processor, and a computer program stored in the memory and executable on the processor, characterized in that the processor implements the steps of the above-described method when executing the computer program.

[0024] A computer-readable storage medium storing a computer program, characterized in that the computer program, when executed by a processor, implements the steps of the above-described method.

[0025] Compared with the prior art, the present invention has the following beneficial technical effects:

[0026] A method for determining the heating operation condition of a gas turbine combined cycle unit involves using existing extraction steam condition lines and minimum exhaust steam lines to determine the high-pressure intake steam volume and minimum power generation of the steam turbine under the obtained actual steam extraction steam volume. Then, the standard-condition gas intake steam volume and minimum power generation of the gas turbine are obtained from the high-pressure intake steam volume. Based on the minimum power generation of the steam turbine and the gas turbine, the minimum power generation of the gas turbine combined cycle unit under the obtained actual steam extraction steam volume can be obtained. Finally, the heating operation condition of the gas turbine combined cycle unit can be determined by using the standard-condition gas intake steam volume, the minimum power generation steam volume, and the minimum power generation of the gas turbine. This technology establishes a model relationship between power generation and existing data by utilizing existing data, thereby effectively solving the technical problem in existing technologies where the minimum power generation of a gas turbine combined cycle unit to maintain a certain heat supply cannot be effectively determined. Attached Figure Description

[0027] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present invention and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0028] Figure 1 This is a flowchart illustrating a method for determining the heating operation conditions of a gas turbine combined cycle unit according to the present invention.

[0029] Figure 2 This is a schematic diagram of a system for determining the heating operation conditions of a gas turbine combined cycle unit according to the present invention.

[0030] Figure 3 This is a thermal diagram of the steam turbine in Embodiment 2 of the present invention;

[0031] Figure 4 This is a flowchart illustrating the determination of the heating operation conditions of the gas turbine combined cycle unit in Embodiment 2 of the present invention. Detailed Implementation

[0032] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. The components of the embodiments of the present invention described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0033] Therefore, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the invention without inventive effort are within the scope of protection of the invention.

[0034] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0035] In the description of the embodiments of the present invention, it should be noted that if terms such as "upper," "lower," "horizontal," or "inner" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of the invention is in use, they are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention. Furthermore, terms such as "first" and "second" are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0036] Furthermore, the use of the term "horizontal" does not imply that the component must be absolutely horizontal, but rather that it can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal than "vertical," and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0037] In the description of the embodiments of the present invention, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in the present invention according to the specific circumstances.

[0038] The present invention will now be described in further detail with reference to the accompanying drawings:

[0039] Example 1

[0040] like Figure 1 As shown, a method for determining the heating operation condition of a gas turbine combined cycle unit includes the following steps:

[0041] S1: Obtain the actual steam extraction rate of the steam turbine, and obtain the known extraction steam condition line and the minimum exhaust steam rate line of the steam turbine; specifically, obtain the known extraction steam condition line and the minimum exhaust steam rate line of the steam turbine through the thermal condition diagram of the steam turbine. The known extraction steam condition line includes the pure condensing condition line and the condition lines under different extraction steam flow rates. Different equipment manufacturers may set multiple condition lines under extraction steam flow rates, which may include 40t / h, 80t / h, 100t / h, 120t / h, etc. At the same time, the settings of different equipment manufacturers may also differ.

[0042] S2: Based on the known extraction steam condition line and minimum exhaust steam line of the steam turbine, determine the high-pressure intake steam volume and minimum power generation of the steam turbine under the obtained actual extraction steam volume conditions of the steam turbine.

[0043] S3: Obtain the standard condition gas intake volume and minimum power generation capacity of the gas turbine based on the high pressure intake volume of the steam turbine;

[0044] Specifically, the standard-condition gas intake volume and minimum power generation of the gas turbine are obtained through the standard-condition gas intake volume model and the gas turbine power generation model, respectively. Both the standard-condition gas intake volume model and the gas turbine power generation model are obtained by training a BP neural network model.

[0045] When obtaining the standard condition gas intake volume model, the input of the BP neural network model is the high-pressure steam intake volume of the steam turbine, and the output is the standard condition gas intake volume of the gas turbine.

[0046] When obtaining the gas turbine power generation model, the inputs of the BP neural network model are high-pressure steam flow rate, gas turbine speed, standard gas flow rate, IGV valve opening, gas temperature, and air temperature, and the output is the gas turbine power generation.

[0047] The high-pressure steam inlet flow rate of the steam turbine, the standard-condition gas inlet flow rate of the gas turbine, the high-pressure steam inlet flow rate, the gas turbine speed, the standard-condition gas inlet flow rate, the IGV valve opening, the gas temperature, the air temperature, and the turbine power generation are all derived from historical equipment operating data used to train the BP neural network model.

[0048] S4: Based on the minimum power generation of the steam turbine and the minimum power generation of the gas turbine, obtain the minimum power generation of the gas turbine combined cycle unit under the obtained actual steam extraction rate of the steam turbine, and combine it with the standard gas intake rate of the gas turbine to determine the heating operation condition of the gas turbine combined cycle unit.

[0049] A method for determining the heating operation condition of a gas turbine combined cycle unit involves using existing extraction steam condition lines and minimum exhaust steam lines to determine the high-pressure intake steam volume and minimum power generation of the steam turbine under the obtained actual steam extraction steam volume. Then, the standard-condition gas intake steam volume and minimum power generation of the gas turbine are obtained from the high-pressure intake steam volume. Based on the minimum power generation of the steam turbine and the gas turbine, the minimum power generation of the gas turbine combined cycle unit under the obtained actual steam extraction steam volume can be obtained. Finally, the heating operation condition of the gas turbine combined cycle unit can be determined by using the standard-condition gas intake steam volume, the minimum power generation steam volume, and the minimum power generation of the gas turbine. This technology establishes a model relationship between power generation and existing data by utilizing existing data, thereby effectively solving the technical problem in existing technologies where the minimum power generation of a gas turbine combined cycle unit to maintain a certain heat supply cannot be effectively determined. In addition, a gas turbine model based on a BP neural network was proposed, which can accurately depict the relationship between the power generation of a gas turbine and its influencing factors.

[0050] Furthermore, such as Figure 2 As shown, the present invention also discloses a system for determining the heating operation conditions of a gas turbine combined cycle unit, comprising:

[0051] The data acquisition module is used to acquire the actual steam extraction volume of the steam turbine, and to acquire the known steam extraction operating condition line and the minimum exhaust volume line of the steam turbine.

[0052] The first data processing module is used to determine the high-pressure intake and minimum power generation of the steam turbine under the obtained actual steam extraction conditions based on the known extraction steam condition line and minimum exhaust steam line of the steam turbine.

[0053] The second data processing module is used to obtain the standard condition gas intake volume and minimum power generation of the gas turbine based on the high pressure intake volume of the steam turbine.

[0054] The third data processing module is used to obtain the minimum power generation of the gas turbine combined cycle unit under the obtained actual steam extraction volume of the steam turbine based on the minimum power generation of the steam turbine and the minimum power generation of the gas turbine.

[0055] The result output module is used to output the minimum power generation of the gas turbine combined cycle unit under the obtained actual steam extraction volume of the steam turbine and the standard gas intake volume of the gas turbine, and to determine the heating operation condition of the gas turbine combined cycle unit.

[0056] Example 2

[0057] Furthermore, in combination Figure 3 The technical solution of the present invention will be explained again in Example 2.

[0058] A method for determining the heating operation conditions of a gas turbine combined cycle unit includes the following steps:

[0059] S1: Obtain the actual steam extraction rate of the steam turbine, which is 105t / h, and use the steam turbine's thermal condition diagram to obtain the known steam extraction condition line and the minimum exhaust steam line of the steam turbine;

[0060] S2: Based on the known extraction steam condition line and minimum exhaust steam line of the steam turbine, determine the high-pressure intake steam volume and minimum power generation of the steam turbine under the obtained actual extraction steam volume conditions of the steam turbine.

[0061] Specifically, the minimum power generation condition of the steam turbine is determined by using the thermal condition diagram of the steam turbine and the intersection of the extraction steam condition line and the minimum exhaust steam line.

[0062] like Figure 4 As shown in the diagram, taking the actual operating conditions of a steam turbine as an example, line Gex represents the minimum steam turbine discharge rate, and Gc represents the steam turbine extraction rate. Figure 4 The horizontal axis represents the steam inlet flow rate to the steam turbine. Figure 4 The vertical axis represents the turbine's power generation capacity. The method for determining the minimum power generation capacity is as follows:

[0063] (1) Determine the function expression for each operating condition line:

[0064] Minimum displacement line Gex: y = -0.0005x 2 +0.1541x + 0.2922, x ranges from (37.44 to 137.80).

[0065] Pure condensing condition curve AE: y = 0.3371x - 3.09, x range (18.09, 195.15)

[0066] Steam extraction flow rate 40t / h, line BF: y=0.0003x 2 +0.2986x - 14.352, x ranges from (73.92, 195.15).

[0067] Steam extraction flow rate 80t / h line CG: y=0.0003x 2 +0.3064x - 26.026, x ranges from (109.44, 195.15).

[0068] Steam extraction flow rate 120t / h, line DH: y=0.0004x 2 +0.285x - 34.929, x ranges from (137.91, 195.15).

[0069] (2) Find Figure 4 The intersection points A, B, C, and D of the four known extraction steam conditions and the minimum exhaust steam flow line are shown. The x-coordinates of the four points A, B, C, and D are found to be: 18.089 (corresponding to the pure condensing condition line), 73.919 (corresponding to the extraction steam flow rate of 40t / h line), 109.445 (corresponding to the extraction steam flow rate of 80t / h line), and 137.908 (corresponding to the extraction steam flow rate of 120t / h line).

[0070] (3) Determine the x-coordinate of the intersection point of the actual extraction steam flow rate line and the minimum exhaust steam flow rate line: Read the real-time data of the heating extraction steam flow rate (data source: power plant SIS system). For example, if the actual extraction steam flow rate obtained in step S1 is 105 t / h, then the x-coordinate of the intersection point of the 105 t / h extraction steam flow rate line and the minimum exhaust steam flow rate line is determined as follows:

[0071]

[0072] (4) Find the ordinate of the intersection point of the actual extraction steam flow rate line and the minimum exhaust steam flow rate line: The ordinate of the intersection point of the 105t / h extraction steam flow rate line and the minimum exhaust steam flow rate line is obtained by substituting x(105) into the function expression y=-0.0005x of the minimum exhaust steam flow rate line. 2 +0.1541x+0.2922, the value is: -5.5125+16.1805+0.2922=10.96.

[0073] That is, to obtain the high-pressure steam flow rate G under the optimal operating condition. gy The minimum power generation capacity of the steam turbine is 127.23 t / h. e The value is 10.96MW.

[0074] The above steps determine the high-pressure steam intake and minimum power generation of the turbine under specific operating conditions.

[0075] S3: Obtain the standard condition gas intake volume and minimum power generation capacity of the gas turbine based on the high pressure intake volume of the steam turbine;

[0076] An artificial intelligence (BP neural network) model is used to calculate the standard-condition gas intake volume and the gas turbine power generation. The BP neural network is trained with high-pressure steam intake as input and standard-condition gas intake volume as output, resulting in the standard-condition gas intake volume model.

[0077] G g =f1(G gy )

[0078] In the formula, G gy For high-pressure steam inlet flow, G g This refers to the standard fuel intake volume;

[0079] A BP neural network was trained with inputs of high-pressure steam flow, gas turbine speed, standard-condition gas flow, IGV valve opening, gas temperature, and air temperature, and output of gas turbine power generation, to obtain a gas turbine power generation model.

[0080] P g =f2(G g N r G gy ,I p ,t g ,t a )

[0081] In the formula, G gy This refers to the high-pressure steam inlet flow rate; N r For gas turbine speed, G g For standard fuel intake volume, I p For IGV valve opening, t g For gas temperature, t a P represents the air temperature. g This refers to the power output of the gas turbine generator.

[0082] The standard-condition gas intake volume and minimum power generation of the gas turbine are obtained using the two models mentioned above.

[0083] S4: Based on the minimum power generation of the steam turbine and the minimum power generation of the gas turbine, obtain the minimum power generation of the gas turbine combined cycle unit under the obtained actual steam extraction rate of the steam turbine, and combine it with the standard gas intake rate of the gas turbine to determine the heating operation condition of the gas turbine combined cycle unit.

[0084] By obtaining the standard-condition gas intake volume, gas turbine power generation capacity, and steam turbine power generation capacity through the above steps, the minimum power generation capacity operating condition corresponding to a certain heat supply of the gas turbine combined cycle unit can be obtained.

[0085] A schematic diagram of a terminal device according to an embodiment of the present invention. The terminal device of this embodiment includes: a processor, a memory, and a computer program stored in the memory and executable on the processor. When the processor executes the computer program, it implements the steps in the various method embodiments described above. Alternatively, when the processor executes the computer program, it implements the functions of each module / unit in the various device embodiments described above.

[0086] The computer program can be divided into one or more modules / units, which are stored in the memory and executed by the processor to complete the present invention.

[0087] The terminal device may be a desktop computer, laptop, handheld computer, or cloud server, etc. The terminal device may include, but is not limited to, a processor and a memory.

[0088] The processor may be a central processing unit (CPU), or other general-purpose processors, digital signal processors (DSPs), application-specific integrated circuits (ASICs), field-programmable gate arrays (FPGAs), or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc.

[0089] The memory can be used to store the computer program and / or module. The processor implements various functions of the terminal device by running or executing the computer program and / or module stored in the memory and calling the data stored in the memory.

[0090] If the modules / units integrated in the terminal device are implemented as software functional units and sold or used as independent products, they can be stored in a computer-readable storage medium. Based on this understanding, all or part of the processes in the methods of the above embodiments can also be implemented by a computer program instructing related hardware. The computer program can be stored in a computer-readable storage medium, and when executed by a processor, it can implement the steps of the various method embodiments described above. The computer program includes computer program code, which can be in the form of source code, object code, executable files, or certain intermediate forms. The computer-readable medium can include: any entity or device capable of carrying the computer program code, recording media, USB flash drives, portable hard drives, magnetic disks, optical disks, computer memory, read-only memory (ROM), random access memory (RAM), electrical carrier signals, telecommunication signals, and software distribution media, etc. It should be noted that the content included in the computer-readable medium can be appropriately added or removed according to the requirements of legislation and patent practice in the jurisdiction. For example, in some jurisdictions, according to legislation and patent practice, computer-readable media do not include electrical carrier signals and telecommunication signals.

[0091] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A method for determining the heating operation conditions of a gas turbine combined cycle unit, characterized in that, Includes the following steps: S1: Obtain the actual steam extraction rate of the steam turbine, the known steam extraction condition line of the steam turbine, and the minimum exhaust rate line; S2: Based on the known extraction steam condition line and minimum exhaust steam line of the steam turbine, determine the high-pressure intake steam volume and minimum power generation of the steam turbine under the obtained actual extraction steam volume conditions of the steam turbine. S3: Obtain the standard condition gas intake volume and minimum power generation capacity of the gas turbine based on the high pressure intake volume of the steam turbine; S4: Based on the minimum power generation of the steam turbine and the minimum power generation of the gas turbine, obtain the minimum power generation of the gas turbine combined cycle unit under the obtained actual steam extraction volume of the steam turbine, and combine it with the standard condition gas intake volume of the gas turbine to determine the heating operation condition of the gas turbine combined cycle unit. In step S3, the standard gas intake volume of the gas turbine is obtained through the standard gas intake volume model of the gas turbine combined cycle unit; The standard condition gas intake volume model is obtained by performing a first training on a BP neural network model. During the first training process, the input is the high-pressure steam intake volume of the steam turbine, and the output is the standard condition gas intake volume of the gas turbine. In step S3, the minimum power generation of the gas turbine is obtained through the gas turbine power generation model of the gas turbine combined cycle unit; The gas turbine power generation model is obtained by performing a second training on the BP neural network model. During the second training process, the inputs are high-pressure steam flow, gas turbine speed, standard gas flow, IGV valve opening, gas temperature, and air temperature, and the output is the gas turbine power generation. In step S1, the known extraction steam condition line and the minimum exhaust steam line of the steam turbine are obtained through the thermal condition diagram of the steam turbine. The known extraction steam operating conditions of the steam turbine include the pure condensing operating condition and the operating conditions under different extraction steam flow rates. The high-pressure steam inlet flow rate of the steam turbine, the standard gas inlet flow rate of the gas turbine, the gas turbine speed, the IGV valve opening, the gas temperature, the air temperature, and the gas turbine power generation are all derived from historical equipment operating data used to train the BP neural network model.

2. A system for determining the heating operation conditions of a gas turbine combined cycle unit, characterized in that, To implement the method of claim 1, the method comprises: The data acquisition module is used to acquire the actual steam extraction volume of the steam turbine, and to acquire the known steam extraction operating condition line and the minimum exhaust volume line of the steam turbine. The first data processing module is used to determine the high-pressure intake and minimum power generation of the steam turbine under the obtained actual steam extraction conditions based on the known extraction steam condition line and minimum exhaust steam line of the steam turbine. The second data processing module is used to obtain the standard condition gas intake volume and minimum power generation of the gas turbine based on the high pressure intake volume of the steam turbine. The third data processing module is used to obtain the minimum power generation of the gas turbine combined cycle unit under the obtained actual steam extraction volume of the steam turbine based on the minimum power generation of the steam turbine and the minimum power generation of the gas turbine. The result output module is used to output the minimum power generation of the gas turbine combined cycle unit under the obtained actual steam extraction volume of the steam turbine and the standard gas intake volume of the gas turbine, and to determine the heating operation condition of the gas turbine combined cycle unit.

3. A terminal device, comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, characterized in that, When the processor executes the computer program, it implements the steps of the method as described in claim 1.

4. A computer-readable storage medium storing a computer program, characterized in that, When the computer program is executed by a processor, it implements the steps of the method as described in claim 1.

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