Gas turbine exhaust temperature reference value calculation method based on parameter adaptive correction control technology

Abstract

The application discloses a kind of gas turbine based on parameter self-adaptive correction control technology exhaust temperature reference value calculation method, it is related to gas turbine combustion control technical field, including constructing multiple exhaust temperature control reference calculation model to calculate multiple exhaust temperature control reference value respectively;Multiple exhaust temperature control reference value is compared and screened, and real-time optimal exhaust temperature control reference is generated;Exhaust temperature control reference is used as the set value of combustion control loop, calculates NOx emission prediction value, and calculates fuel ratio correction factor, corrects fixed fuel ratio, obtains the fuel distribution proportion in the actual operation of unit.The application guarantees the economy of unit operation, and simultaneously has the ability of automatically changing fuel quantity parameter, adjusts the gain of fuel distribution proportion by NOx prediction value, without manual parameter adjustment of unit operating personnel after environmental change, saves the workload of operating personnel.

Description

Technical Field

[0001] This invention relates to the field of gas turbine combustion control technology, and in particular to a method for calculating the exhaust temperature reference value of a gas turbine based on parameter adaptive correction control technology. Background Technology

[0002] In current gas turbine combustion control technology, the traditional method involves comparing the gas turbine exhaust temperature signal with an exhaust temperature reference value, and then using a PI controller to adjust the fuel stroke reference, forming a PI control loop. When the exhaust temperature exceeds the temperature control reference, fuel output is reduced until the exhaust temperature drops to the temperature control reference. When the exhaust temperature exceeds the temperature control reference, fuel output is increased.

[0003] The temperature control baseline varies with ambient temperature. It employs a temperature control line that varies with compressor outlet pressure, a temperature control line that varies with fuel quantity, and an iso-exhaust temperature temperature control line, selecting the minimum value to achieve control. After PI calculation, a fuel stroke baseline is output. However, the fuel stroke baseline calculation result of this method is essentially unaffected by external factors (such as ambient temperature, humidity, intake pressure loss, and exhaust pressure). Therefore, unit operators need to make combustion adjustments in both winter and summer, causing inconvenience. Furthermore, it fails to consider the economic and environmental aspects of unit operation. Summary of the Invention

[0004] In view of the problems existing in the current method for calculating the exhaust temperature reference value of a gas turbine based on parameter adaptive correction control technology, this invention is proposed. Therefore, the problem to be solved by this invention is how to provide a method for calculating the exhaust temperature reference value of a gas turbine based on parameter adaptive correction control technology.

[0005] To solve the above-mentioned technical problems, the present invention provides the following technical solution:

[0006] In a first aspect, the present invention provides a method for calculating the exhaust temperature reference value of a gas turbine based on parameter adaptive correction control technology, which includes constructing multiple exhaust temperature control reference calculation models to calculate multiple exhaust temperature control reference values ​​respectively.

[0007] Multiple exhaust temperature control reference values ​​are compared and screened from multiple sources. The largest value of the best performance temperature control reference and the CO reference is taken, and the smallest value is taken from the basic temperature control reference, the NOx temperature control reference and the maximum combustion temperature reference to generate the real-time optimal exhaust temperature control reference.

[0008] The exhaust gas temperature control benchmark is used as the setpoint for the combustion control loop. NOx emission predictions are calculated based on the exhaust gas temperature control benchmark. The fuel ratio correction factor is calculated by combining the compressor exhaust temperature and pressure. The fixed fuel ratio is then corrected according to the correction factor to obtain the fuel distribution ratio in actual unit operation.

[0009] As a preferred embodiment of the method for calculating the exhaust temperature reference value of a gas turbine based on parameter adaptive correction control technology as described in this invention, the various exhaust temperature control reference values ​​include an exhaust temperature control reference based on the maximum combustion flame temperature boundary, an exhaust temperature control reference based on the turbine's optimal performance, an exhaust temperature control reference based on the CO emission boundary, an exhaust temperature control reference based on the NOx emission boundary, and a basic exhaust temperature control reference.

[0010] As a preferred embodiment of the method for calculating the exhaust temperature reference value of a gas turbine based on parameter adaptive correction control technology as described in this invention, the exhaust temperature control reference based on the maximum combustion flame temperature boundary includes: by comprehensively analyzing the influence of compressor inlet pressure drop, turbine exhaust pressure drop, atmospheric humidity and compressor temperature ratio parameters on the maximum combustion flame temperature boundary, and adjusting the exhaust temperature control reference based on the maximum combustion flame temperature boundary using a correction coefficient.

[0011] The calculation formula for the exhaust temperature control benchmark based on the maximum combustion flame temperature boundary is expressed as follows:

[0012] The baseline value TXTFX = (α0 + α1 + 459.67) × β1 - 459.67 + β3

[0013] α1=(P0-ΔP0)×(-0.0906×CPR-0.0002×CPR 2 +1.6668)+(P4-ΔP4)

[0014] ×(-0.0952×CPR+0.00027×CPR 2 +1.6671)

[0015]

[0016] β3 = CMHUM × 317.301

[0017] Where: α0 is a function of compressor pressure ratio, α1 is the correction coefficient of compressor inlet and outlet pressures to the exhaust temperature reference, P0 is compressor inlet differential pressure, ΔP0 is a constant, P4 is turbine exhaust pressure, ΔP4 is a constant, β1 is the correction coefficient of compressor temperature ratio to the exhaust temperature reference, β3 is the bias coefficient of atmospheric humidity to the exhaust temperature reference, CPR is compressor pressure ratio, CTD is compressor exhaust temperature, and CMHUM is atmospheric humidity.

[0018] As a preferred embodiment of the method for calculating the exhaust temperature reference value of a gas turbine based on parameter adaptive correction control technology described in this invention, the exhaust temperature control reference based on optimal turbine performance includes: calculations obtained through empirical value interpolation, with input parameters including atmospheric temperature, pressure, humidity, compressor exhaust pressure, and exhaust temperature. The calculation formula for the exhaust temperature control reference based on optimal turbine performance is expressed as follows:

[0019] The baseline value TXTFP = (α0 + α1 + α2 + 459.67) × β1 - 459.67 + β2 + β3

[0020]

[0021] β3 = CMHUM × 312.745

[0022] Where: α2 is the exhaust temperature reference correction bias coefficient, β1 is the compressor temperature ratio correction coefficient to the exhaust temperature reference, β2 is the exhaust temperature reference bias coefficient during online water washing, and β3 is the atmospheric humidity bias coefficient to the exhaust temperature reference.

[0023] As a preferred embodiment of the method for calculating the exhaust temperature reference value of a gas turbine based on parameter adaptive correction control technology as described in this invention, the exhaust temperature control reference based on the CO emission boundary includes: calculated by the compressor pressure ratio and corrected by environmental parameters and compressor exhaust parameters, and a CO reference compensation coefficient and a CO gain coefficient are introduced for dynamic correction.

[0024] The exhaust temperature control benchmark based on the NOx emission boundary is obtained by compressor pressure ratio and empirical interpolation, and is corrected by ambient temperature and humidity, compressor exhaust parameters and NOx correction value. The NOx benchmark compensation coefficient and NOx gain coefficient are introduced for dynamic adjustment.

[0025] As a preferred embodiment of the method for calculating the exhaust temperature reference value of a gas turbine based on parameter adaptive correction control technology according to the present invention, the calculation of the predicted NOx emission value includes:

[0026] Based on the difference between the final flue gas temperature control baseline and the NOx temperature control baseline, and using empirical constants to calculate and correct for the influence of external environmental parameters, the formula for calculating the predicted NOx value is expressed as follows:

[0027]

[0028] Wherein: NOXPREF is the predicted NOx value, TTRX is the reference temperature for flue gas temperature, and TXNOX is the exhaust temperature control reference for the NOx emission boundary;

[0029] Determine the NOx gain coefficient, and decrease the gain coefficient as actual NOx emissions increase; when NOx gain adjustment is permissible, the formula for calculating the NOx gain coefficient is as follows:

[0030]

[0031] Where: NOXGSM is the NOx gain coefficient, XENOXF is the measured NOx value, and NOXGSM is the NOx gain coefficient;

[0032] The ratio of primary fuel to premixed fuel is corrected by combining NOx forecasts with NOx gain coefficients.

[0033] As a preferred embodiment of the method for calculating the exhaust temperature reference value of a gas turbine based on parameter adaptive correction control technology according to the present invention, the calculation of the fuel ratio correction factor includes:

[0034] Based on NOx predictions, compressor exhaust temperature and pressure, and combined with built-in constants and empirical interpolation functions, the fuel distribution ratio bias is calculated.

[0035] When the CO gain coefficient or NOx gain coefficient reaches the upper or lower boundary, fuel distribution adjustment is triggered, and the output fuel distribution ratio coefficient is determined as the median value of the three values, which is a dynamic correction of the proportion of primary premixed fuel.

[0036] In a second aspect, the present invention provides a computer device, including a memory and a processor, wherein the memory stores a computer program, and the processor executes the computer program to implement the steps of a method for calculating the exhaust temperature reference value of a gas turbine based on parameter adaptive correction control technology.

[0037] Thirdly, the present invention provides a computer-readable storage medium having a computer program stored thereon, wherein: when the computer program is executed by a processor, it implements the steps of a method for calculating the exhaust temperature reference value of a gas turbine based on parameter adaptive correction control technology.

[0038] The beneficial effects of this invention are as follows: This method performs NOx prediction and calculates the temperature control benchmark based on NOx emission values, ensuring environmental compliance of pollutant emissions. The exhaust temperature control benchmark based on optimal performance and the exhaust temperature control benchmark based on the maximum combustion flame temperature boundary improves combustion efficiency within the maximum safe operating range of the unit, ensuring the economic efficiency of unit operation. Simultaneously, using the optimally selected exhaust temperature benchmark value as the setpoint for the PI automatic control loop enables automatic adjustment of fuel quantity parameters. Finally, the fuel distribution ratio gain is adjusted based on the NOx prediction value, eliminating the need for manual parameter adjustments by unit operators after environmental changes, thus saving operator workload. Attached Figure Description

[0039] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0040] Figure 1 This is a flowchart of a traditional method for controlling fuel travel references by temperature.

[0041] Figure 2 This is the control framework diagram for this method. Detailed Implementation

[0042] To make the above-mentioned objects, features, and advantages of the present invention more readily understood, specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of them. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the protection scope of the present invention.

[0043] Many specific details are set forth in the following description in order to provide a full understanding of the invention. However, the invention may also be practiced in other ways different from those described herein, and those skilled in the art can make similar extensions without departing from the spirit of the invention. Therefore, the invention is not limited to the specific embodiments disclosed below.

[0044] Secondly, the term "an embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in one embodiment" appearing in different places in this specification does not necessarily refer to the same embodiment, nor is it a single embodiment or an embodiment selectively excluded from other embodiments.

[0045] Reference Figure 1 and Figure 2 This is the first embodiment of the present invention, which provides a method for calculating the exhaust temperature reference value of a gas turbine based on parameter adaptive correction control technology, including:

[0046] S1. Construct multiple exhaust temperature control benchmark calculation models to calculate multiple exhaust temperature control benchmark values ​​respectively;

[0047] Specifically, the exhaust temperature control benchmark is calculated based on the maximum combustion flame temperature boundary. The influence of compressor inlet pressure drop, compressor inlet temperature, turbine exhaust pressure drop, and atmospheric humidity on the maximum combustion flame temperature decision boundary is comprehensively analyzed, and the exhaust temperature benchmark value based on the maximum combustion flame temperature decision boundary is adaptively adjusted to ensure that the turbine initial temperature does not exceed the limit. The formula for calculating the exhaust temperature control benchmark based on the maximum combustion flame temperature boundary can be expressed as follows:

[0048] The baseline value TXTFX = (α0 + α1 + 459.67) × β1 - 459.67 + β3

[0049] α1=(P0-ΔP0)×(-0.0906×CPR-0.0002×CPR 2 +1.6668)+(P4-ΔP4)

[0050] ×(-0.0952×CPR+0.00027×CPR 2 +1.6671)

[0051]

[0052] β3 = CMHUM × 317.301

[0053] Where: α0 is a function of the compressor pressure ratio, which is obtained by interpolation from empirical values; α1 is the correction coefficient of the compressor inlet and outlet pressures to the exhaust temperature reference; P0 is the compressor inlet differential pressure, with a maximum value of 9 and a minimum value of -0.5; ΔP0 is a constant; P4 is the turbine exhaust pressure, with an alarm triggered when P4 exceeds 13.78 and a trip triggered when it exceeds 15.748; ΔP4 is a constant of 11.81; α2 is the exhaust temperature reference correction bias coefficient, which is taken as a constant of 0 here; β1 is the correction coefficient of the compressor temperature ratio to the exhaust temperature reference; β3 is the bias coefficient of atmospheric humidity to the exhaust temperature reference; CPR is the compressor pressure ratio; CTD is the compressor exhaust temperature; and CMHUM is the atmospheric humidity.

[0054] The calculation is based on the exhaust temperature control benchmark calculation method for optimal turbine performance. This value is calculated by interpolation of empirical values ​​and is derived from a comprehensive calculation of parameters such as atmospheric temperature and pressure, compressor exhaust pressure, compressor exhaust temperature, and atmospheric humidity.

[0055] The baseline value TXTFP = (α0 + α1 + α2 + 459.67) × β1 - 459.67 + β2 + β3

[0056] The baseline value TXTFP = (α0 + α1 + 459.67) × β1 - 459.67 + β3

[0057]

[0058] β3 = CMHUM × 312.745

[0059] Where: α2 is the exhaust temperature reference correction bias coefficient, β1 is the compressor temperature ratio correction coefficient to the exhaust temperature reference, β2 is the bias coefficient of the exhaust temperature reference during online water washing, and the default value is 0 in order to improve the exhaust temperature reference during online water washing, and β3 is the atmospheric humidity bias coefficient to the exhaust temperature reference.

[0060] Calculate the exhaust temperature control baseline based on the CO emission boundary. This value is calculated by interpolation from empirical values ​​based on the compressor pressure ratio (CPR), and then corrected for environmental parameters (atmospheric pressure, temperature, humidity, etc.), compressor exhaust parameters (compressor pressure CPD, temperature CTD), and CO emission correction values. To ensure CO emissions, the actual exhaust temperature control baseline should be above this baseline.

[0061] The CO benchmark value TXCO = (α0 + α1 + α2 + 459.67) × β1 - 459.67 + β2 + β3

[0062] Where: α0 is a function of the compressor pressure ratio, and its relationship is derived from fitting actual unit parameters; α2 is the exhaust temperature reference correction bias coefficient, which is also derived from fitting actual unit parameters. Its calculation formula is as follows:

[0063] TXCOB = F(TRGCO) - 29.6

[0064] TRGCO = KCOR * KCOG + KCOB

[0065] KCOG = COGSM / FXCOQ

[0066]

[0067] β3 = CMHUM × 980.163

[0068] In the formula, KCOR is the CO reference value, KCOB is the CO bias, KCOG is the CO reference compensation coefficient, FXCOQ is the CO prediction correction coefficient, whose value is a linear interpolation function of the NOx prediction correction coefficient FXNOXQ, COGSM is the CO gain coefficient, when CO gain adjustment is allowed, β1 is the compressor temperature ratio correction coefficient to the exhaust temperature reference, β2 is the bias coefficient of the exhaust temperature reference during online water washing, this coefficient is introduced to improve the exhaust temperature reference during online water washing, the default value is 7; β3 is the atmospheric humidity bias coefficient to the exhaust temperature reference.

[0069] To address the risk of exceeding NOx emission limits, an exhaust temperature control benchmark based on the NOx emission boundary was designed. This value is calculated by interpolation from empirical values ​​based on the compressor pressure ratio (CPR), and is corrected for environmental parameters (atmospheric pressure, temperature, humidity, etc.), compressor exhaust parameters (compressor pressure CPD, temperature CTD), and NOx emission correction values. To ensure NOx emissions, the actual exhaust temperature control benchmark should be below this benchmark.

[0070] The baseline value TXNOX = (α0 + α1 + α2 + 459.67) × β1 - 459.67 + β2 + β3

[0071]

[0072] β3 = CMHUM × 919.1567

[0073] Where: α0 is a function of compressor pressure ratio, and its relationship is fitted based on actual unit parameters; α2 is the exhaust temperature reference correction bias coefficient; β1 is the compressor temperature ratio correction coefficient to the exhaust temperature reference; β2 is the exhaust temperature reference bias coefficient during online water washing. This coefficient is introduced to improve the exhaust temperature reference during online water washing, and the default value is 7; β3 is the atmospheric humidity bias coefficient to the exhaust temperature reference.

[0074] The formula for calculating the exhaust temperature reference correction bias coefficient is as follows:

[0075] TXNOXB = F(TRGNOX) + 46.5

[0076] TRGNOX = KNOXR * KNOXG + KNOXB

[0077] KNOXB = f(CTIMF) * NOXGSM

[0078] Where: F(·) is obtained by interpolation of empirical values, KNOXR is the NOx reference value with a default value of 4.85 PPM, KNOXG is the NOx reference compensation coefficient with a default value of 1, KNOXB is the NOx bias, f(CTIMF) is the interpolation function of the empirical value of the compressor inlet temperature, and NOXGSM is the NOx gain coefficient;

[0079] S2: Perform multi-channel comparison and screening of various exhaust temperature control reference values, take the larger value of the best performance temperature control reference and the CO reference, and then take the smaller value of the basic temperature control reference, NOx temperature control reference and the maximum combustion temperature reference to generate the real-time optimal exhaust temperature control reference.

[0080] Specifically, the five circuits mentioned above are selected through real-time voting. The maximum value between the best performance temperature control benchmark and the CO temperature control benchmark is taken, and the minimum value between the best performance temperature control benchmark, the basic temperature control benchmark, the NOx temperature control benchmark, and the maximum combustion temperature benchmark is taken as the output as the final exhaust temperature control benchmark. The real-time optimal exhaust temperature control benchmark is generated as the set value of the combustion control circuit, ensuring that the output fuel quantity of the combustion control circuit is optimal.

[0081] S3: Use the exhaust gas temperature control reference as the combustion control loop setpoint, calculate the predicted NOx emission value based on the exhaust gas temperature control reference, and calculate the fuel ratio correction factor in combination with the compressor exhaust temperature and pressure. Correct the fixed fuel ratio according to the correction factor to obtain the fuel distribution ratio in actual unit operation.

[0082] Specifically, NOx prediction begins by comparing the calculated results of the final selected flue gas temperature baseline with the NOx temperature control baseline. After a series of numerical calculations using empirical constants and corrections based on external environmental parameters, the predicted NOx emission value NOXPREF under this temperature control condition is obtained. The formula for calculating the predicted NOx emission value NOXPREF is shown below.

[0083]

[0084] Wherein, TTRX is the exhaust gas temperature reference temperature, and TXNOX is the exhaust gas temperature control reference for the NOx emission boundary.

[0085] The NOx gain coefficient NOXGSM is calculated. When the NOx gain coefficient reaches the boundary value (lower boundary is 0.4, upper boundary is 2.5), the initial value of the NOx gain coefficient NOXGSM is 1.1. When the actual NOx emissions increase, the NOx gain coefficient NOXGSM will gradually decrease, which will lead to a decrease in the NOx gain compensation coefficient FXNOXQS, an increase in the main fuel distribution ratio coefficient FXSP2_XE, an increase in the amount of premixed fuel, and a decrease in the amount of diffused fuel, resulting in a decrease in the flame temperature in the combustion center and a decrease in NOx emissions.

[0086] When NOx gain adjustment is allowed, the NOx gain coefficient NOXGSM is calculated as follows, expressed as:

[0087]

[0088] Where: XENOXF is the measured value of NOx, NOXGSM is the NOx gain coefficient, and NOXPREF is the predicted value of NOx;

[0089] Based on the predicted NOx emissions, compressor exhaust temperature and pressure, and through calculations using some empirical constants, a fuel blending correction factor is derived. Based on this correction factor and the calculations using built-in constants, a corrected fuel blending value is obtained. This corrected value is then used to adjust the fixed fuel blending, resulting in the actual fuel blending ratio during unit operation (the ratio of primary fuel to total fuel in premixed conditions). The NOx gain compensation coefficient FXNOXQS is then calculated and expressed as:

[0090]

[0091] in, NOx is the boundary value of NOx under open-loop control, a function of compressor inlet temperature CTIM, NOXPREF is the predicted value of NOx, NOXGSM is the NOx gain coefficient, and PMYREQ is the fuel distribution ratio bias.

[0092] When FXNOXQ is greater than 1.2, FXNOXQS = FXNOXQ; when FXNOXQ is not greater than 1.2, FXNOXQS equals FXQSTAR, and FXQSTAR is a linear interpolation function of the compressor inlet temperature CTIM, the interpolation of which is obtained from unit operating characteristic experiments.

[0093] The fuel distribution ratio offset PMYREQ is calculated. The preset value of the fuel distribution ratio offset DPMYREQ is a linear interpolation function of FXNOXQS, and its interpolation is obtained from the unit operating characteristic experiment.

[0094] When the CO gain coefficient (COGSM) reaches the lower boundary of 0.125 or the upper boundary of 8, or the NOx gain coefficient (NOXGSM) reaches the lower boundary of 0.4 or the upper boundary of 2.5, the upper and lower boundaries are adjusted. At this time, the value of the fuel distribution ratio bias PMYREQ is -3; otherwise, the value of PMYREQ is equal to DPMYREQ. The final output is the fuel distribution ratio coefficient.

[0095] This embodiment also provides a computer device applicable to a method for calculating the exhaust temperature reference value of a gas turbine based on parameter adaptive correction control technology, comprising: a memory and a processor; the memory is used to store computer-executable instructions, and the processor is used to execute the computer-executable instructions to implement all or part of the steps of the method described in the above embodiments of the present invention.

[0096] This embodiment also provides a storage medium on which a computer program is stored. When the computer program is executed by a processor, it performs the method in any optional implementation of the above embodiments. The storage medium can be implemented by any type of volatile or non-volatile storage device or a combination thereof, such as Static Random Access Memory (SRAM), Electrically Erasable Programmable Read-Only Memory (EEPROM), Erasable Programmable Read Only Memory (EPROM), Programmable Red-Only Memory (PROM), Read-Only Memory (ROM), magnetic storage, flash memory, magnetic disk, or optical disk.

[0097] The storage medium proposed in this embodiment and the data storage method proposed in the above embodiments belong to the same inventive concept. Technical details not described in detail in this embodiment can be found in the above embodiments, and this embodiment has the same beneficial effects as the above embodiments.

[0098] In summary, this method performs NOx prediction and calculates the temperature control baseline based on NOx emission values, ensuring environmental compliance of pollutant emissions. The exhaust temperature control baseline based on optimal performance and the exhaust temperature control baseline based on the maximum combustion flame temperature boundary improves combustion efficiency within the maximum safe operating range of the unit, ensuring the economic efficiency of unit operation. Simultaneously, using the optimally selected exhaust temperature baseline value as the setpoint for the PI automatic control loop enables automatic adjustment of fuel quantity parameters. Finally, the fuel distribution ratio gain is adjusted based on the NOx prediction value, eliminating the need for manual parameter adjustments by unit operators after environmental changes, thus saving operator workload.

[0099] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit it. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all such modifications or substitutions should be covered within the scope of the claims of the present invention.

Claims

1. A method for calculating the exhaust temperature reference value of a gas turbine based on parameter adaptive correction control technology, characterized in that: include, Multiple exhaust temperature control benchmark calculation models were constructed to calculate various exhaust temperature control benchmark values ​​respectively; The various exhaust temperature control reference values ​​include exhaust temperature control references based on the maximum combustion flame temperature boundary, exhaust temperature control references based on the optimal turbine performance, exhaust temperature control references based on the CO emission boundary, exhaust temperature control references based on the NOx emission boundary, and basic exhaust temperature control references. Multiple exhaust temperature control reference values ​​are compared and screened. The larger value of the exhaust temperature control reference based on the turbine's optimal performance and the exhaust temperature control reference based on the CO emission boundary is taken, and then the smaller value is taken from the basic exhaust temperature control reference, the exhaust temperature control reference based on the NOx emission boundary and the exhaust temperature control reference based on the maximum combustion flame temperature boundary to generate the real-time optimal exhaust temperature control reference. The optimal flue gas temperature control benchmark is used as the setpoint for the combustion control loop. The predicted NOx emission value is calculated based on the optimal flue gas temperature control benchmark. The fuel ratio correction factor is calculated by combining the compressor exhaust temperature and pressure. The fixed fuel ratio is corrected according to the correction factor to obtain the fuel distribution ratio in actual unit operation.

2. The method for calculating the exhaust temperature reference value of a gas turbine based on parameter adaptive correction control technology as described in claim 1, characterized in that: The exhaust temperature control benchmark based on the maximum combustion flame temperature boundary includes: by comprehensively analyzing the influence of compressor inlet pressure drop, turbine exhaust pressure drop, atmospheric humidity and compressor temperature ratio parameters on the maximum combustion flame temperature boundary, the exhaust temperature control benchmark based on the maximum combustion flame temperature boundary is adjusted by using a correction coefficient. The calculation formula for the exhaust temperature control benchmark based on the maximum combustion flame temperature boundary is expressed as follows: in: It is a function of the compressor pressure ratio, derived by interpolation from empirical values. It is the correction factor for the compressor inlet and outlet pressures relative to the exhaust temperature reference. It is the compressor inlet differential pressure. It is a constant. It is the turbine exhaust pressure. 4 is a constant. It is a correction factor for the compressor temperature ratio relative to the exhaust temperature reference, based on the maximum combustion flame temperature boundary. It is the bias coefficient of atmospheric humidity relative to the exhaust temperature reference based on the maximum combustion flame temperature boundary. CPR is the compressor pressure ratio, and CTD is the compressor exhaust temperature. It refers to atmospheric humidity.

3. The method for calculating the exhaust temperature reference value of a gas turbine based on parameter adaptive correction control technology as described in claim 2, characterized in that: The exhaust temperature control benchmark based on optimal turbine performance includes calculations obtained through empirical value interpolation. Input parameters include atmospheric temperature, pressure, humidity, and compressor exhaust pressure and temperature. The calculation formula for the exhaust temperature control benchmark based on optimal turbine performance is expressed as follows: in: It is the exhaust temperature reference correction bias coefficient. It is a correction factor for the compressor temperature ratio relative to the exhaust temperature reference based on the optimal turbine performance. It is the bias coefficient of the exhaust temperature reference during online water washing. It is the bias coefficient of atmospheric humidity relative to the exhaust temperature reference based on the optimal performance of the turbine.

4. The method for calculating the exhaust temperature reference value of a gas turbine based on parameter adaptive correction control technology as described in claim 3, characterized in that: The exhaust temperature control benchmark based on the CO emission boundary includes: calculated from the compressor pressure ratio and corrected by environmental parameters and compressor exhaust parameters, and a CO benchmark compensation coefficient and a CO gain coefficient are introduced for dynamic correction; The exhaust temperature control benchmark based on the NOx emission boundary is obtained by compressor pressure ratio and empirical interpolation, and is corrected by ambient temperature and humidity, compressor exhaust parameters and NOx correction value. The NOx benchmark compensation coefficient and NOx gain coefficient are introduced for dynamic adjustment.

5. The method for calculating the exhaust temperature reference value of a gas turbine based on parameter adaptive correction control technology as described in claim 4, characterized in that: The calculated fuel ratio correction factor includes: Based on NOx emission predictions, compressor exhaust temperature and pressure, and combined with built-in constants and empirical interpolation functions, the fuel distribution ratio bias is calculated. When the CO gain coefficient reaches the upper and lower boundaries, fuel distribution adjustment is triggered, and the output fuel distribution ratio coefficient is determined as the median value of the three values, which is a dynamic correction of the proportion of primary premixed fuel.

6. A computer device comprising a memory and a processor, wherein the memory stores a computer program, characterized in that: When the processor executes the computer program, it implements the steps of the method for calculating the exhaust temperature reference value of a gas turbine based on parameter adaptive correction control technology as described in any one of claims 1 to 5.

7. A computer-readable storage medium having a computer program stored thereon, characterized in that: When the computer program is executed by the processor, it implements the steps of the method for calculating the exhaust temperature reference value of a gas turbine based on parameter adaptive correction control technology as described in any one of claims 1 to 5.

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