Capacity optimization method and apparatus for air intake heating system of gas turbine compressor, and device and storage medium

Abstract

Provided in the present application are a capacity optimization method and apparatus for an air intake heating system of a gas turbine compressor, and a device and a storage medium. The method comprises: on the basis of annual time-period-based operation boundary parameters of a gas turbine compressor, constructing a compressor airflow characteristic function Fair of a unit for an air intake heating system of the gas turbine compressor; on the basis of the compressor airflow characteristic function Fair of the unit, calculating an air temperature T1, i downstream of the air intake heating system at an i-th time point when the capacity Q of the air intake heating system is given; on the basis of the air temperature T1, i downstream of the air intake heating system at the i-th time point, determining whether the current unit is in a baseload operating state of a gas turbine, and if so, calculating the total net benefit of the air intake heating system of the gas turbine compressor in view of an hourly change in the gas consumption rate of the unit after the air intake heating system is put into use; further determining whether the air temperature T1, max downstream of the air intake heating system is lower than the maximum allowable operation temperature Ta, max of the gas turbine, and if so, increasing the capacity of the air intake heating system by ΔQ, updating the given capacity Q of the air intake heating system, and repeating steps C to D, otherwise, ending the calculation; and on the basis of the updated given capacity Q of the air intake heating system, calculating an equivalent cost, and obtaining the optimal air intake heating capacity. The present application solves the technical problem of how to quickly and effectively optimize the capacity of the air intake heating system of the gas turbine compressor of a combined cycle unit.

Description

A method, apparatus, equipment, and storage medium for optimizing the capacity of a gas turbine compressor inlet heating system.

[0001] Cross-reference to related applications

[0002] This application claims priority to Chinese Patent Application No. 202410691582.6, filed on May 30, 2024, entitled "A method and apparatus for optimizing the capacity of an intake heating system for a gas turbine compressor", the entire contents of which are incorporated herein by reference. Technical Field

[0003] This application belongs to the field of combined cycle generator set efficiency improvement technology, and relates to a method, device, equipment and storage medium for optimizing the capacity of a gas turbine compressor intake heating system. Background Technology

[0004] A gas turbine is a constant-volume rotating power machine. Under partial load conditions, a decrease in the mass flow rate of the air at the compressor inlet will cause the internal flow field of the compressor and turbine to deviate from the design value, resulting in a decrease in the efficiency of the compressor and turbine. At the same time, the turbine exhaust and steam cycle parameters will change accordingly, which will have a complex impact on the gas consumption rate of the unit.

[0005] In my country, combined cycle power units generally participate in grid peak shaving, resulting in generally low operating efficiency. Configuring a gas turbine compressor inlet heating system is an effective way to improve the performance of combined cycle units under partial load conditions. When designing a gas turbine compressor inlet heating system, the heating system capacity is a core parameter; too small or too large a parameter will lead to low return on investment. Currently, no rapid and accurate method for optimizing the gas turbine compressor inlet heating system capacity has been found, either domestically or internationally.

[0006] Summary of the Invention

[0007] This application provides a method, apparatus, equipment, and storage medium for optimizing the capacity of a gas turbine compressor inlet heating system, addressing the technical problem of how to quickly and effectively optimize the capacity of a combined cycle unit's gas turbine compressor inlet heating system.

[0008] The following technical solution is adopted in this application:

[0009] This application provides a method for optimizing the capacity of a gas turbine compressor inlet heating system, including:

[0010] Step A: Construct the compressor airflow characteristic function F of the gas turbine compressor in the gas turbine compressor intake heating system based on the annual time-segmented operating boundary parameters. air ;

[0011] Step B: Based on the compressor airflow characteristic function F of the unit airCalculate the air temperature T after the intake heating system at the i-th time point, given the intake heating system capacity Q. 1,i ;

[0012] Step C: Based on the air temperature T after the intake heating system at the i-th time point. 1,i Determine whether the current unit is in gas turbine BASELOAD mode. If so, calculate the total benefit of the gas turbine compressor intake heating system by combining the variable gas consumption rate of the unit after the intake heating system is put into operation hourly.

[0013] Step D: Further determine the air temperature T after the intake heating system. 1,max Is it less than the maximum allowable operating temperature T of the gas turbine? a,max If so, the intake heating system capacity is increased by ΔQ, the given intake heating system capacity Q is updated, and steps C to D are repeated; otherwise, the calculation ends.

[0014] Step E: Calculate the equivalent cost based on the updated given intake heating system capacity Q, and obtain the optimal intake heating capacity.

[0015] Optionally, step D further includes: if the current hourly unit power determines that the current unit is not in the gas turbine BASELOAD operating condition, then additional benefit F is generated. i =0.

[0016] Optionally, the operating boundary parameters include atmospheric pressure p0, atmospheric temperature T0, atmospheric humidity RH0, unit load P, and gas price B. gas .

[0017] Optionally, the compressor airflow characteristic function F of the gas turbine compressor intake heating system is constructed according to the following formula. air F air =f2(P)=d×P 2 +e×P+f

[0018] In the formula, F air t / h is the air flow rate of the unit's compressor; T is the atmospheric temperature (°C); P is the unit's output power (MW); a and e are constants.

[0019] Optionally, step A further includes constructing the gas consumption rate characteristic function of the gas turbine compressor intake heating system based on the year-round time-segmented operating boundary parameters of the gas turbine compressor according to the following formula: b=f1(T,P)=a i ×T 2 +b i ×T+c i

[0020] Where: b is the unit gas consumption rate, Nm 3 / (kW·h), where a, b, and c are all constants.

[0021] Optionally, step B: Based on the compressor airflow characteristic function F of the unit. air Calculate the air temperature T after the intake heating system at the i-th time point, given the intake heating system capacity Q. 1,i include:

[0022] Step S1: Calculate the atmospheric saturated vapor pressure p according to the following formula. b,i p b,i =0.0901×T 0,i 3 -1.4122×T 0,i 2 +86.9604×T 0,i +474.7993

[0023] Step S2: Based on the atmospheric saturated vapor pressure p b,i Calculate atmospheric moisture content D 0,i and atmospheric enthalpy H 0,i :

[0024] Step S3: Based on the atmospheric moisture content D 0,i and atmospheric enthalpy H 0,i Calculate the enthalpy H of the heated air. 1,i and air temperature T 1,i :

[0025] In the formula: p b,i The hourly atmospheric saturated vapor pressure is expressed in Pa and T. 0,i The atmospheric temperature is expressed as an hourly value in °C; D 0,i Hourly atmospheric moisture content, Pa; p 0,i Hourly atmospheric pressure, kPa; RH 0,i Hourly atmospheric humidity, %; H 0,i Hourly atmospheric enthalpy, kJ / kg; H 1,i The enthalpy of air after heating for each hour is expressed in kJ / kg; T 1,i The temperature of the air after heating for each hour is expressed in °C; F air The air flow rate of the unit's compressor is expressed in tons per hour (t / h).

[0026] Optionally, the total revenue F of the gas turbine compressor intake heating system is calculated as follows:

[0027] In the formula: F represents the total revenue in ten thousand yuan per year; Δb i To measure the change in unit gas consumption rate (Nm) after the intake air heating system is put into operation hourly. 3 / (kW·h), obtained by querying the gas consumption rate characteristic function b=f1(T,P) of the unit when configuring the gas turbine compressor intake heating system; T 1,i The temperature of the air after intake heating is expressed in °C; T 0,i The atmospheric temperature is expressed as an hourly value in °C; P i For hourly unit power, MW; B gas Gas price, yuan / Nm 3 .

[0028] Alternatively, the equivalent cost can be calculated as follows: COST = a + b × Q

[0029] In the formula, Q is the capacity of the updated intake heating system (MW); a and b are constants, which are defined by the user based on the cost of the thermal system modification.

[0030] This application also provides a capacity optimization device for a gas turbine compressor inlet heating system, characterized in that it includes:

[0031] The module is used to construct the compressor airflow characteristic function F of the gas turbine compressor inlet heating system based on the year-round time-segmented operating boundary parameters of the gas turbine compressor. air ;

[0032] The air temperature calculation module is used to calculate the air flow rate characteristic function F of the unit's compressor. air Calculate the air temperature T after the intake heating system at the i-th time point, given the intake heating system capacity Q. 1,i ;

[0033] The system total revenue calculation module is used to calculate the air temperature T after the intake heating system at the i-th time point. 1,i Determine whether the current unit is in gas turbine BASELOAD mode. If so, calculate the total benefit of the gas turbine compressor intake heating system by combining the variable gas consumption rate of the unit after the intake heating system is put into operation hourly.

[0034] The judgment module is used to further determine the air temperature T after the intake heating system. 1,max Is it less than the maximum allowable operating temperature T of the gas turbine? a,max If so, the intake heating system capacity is increased by ΔQ, the given intake heating system capacity Q is updated, and steps C to D are repeated; otherwise, the calculation ends.

[0035] The output module is used to calculate the equivalent cost based on the updated given intake heating system capacity Q, and to obtain the optimal intake heating capacity.

[0036] This application also provides a computer device, including 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 a capacity optimization method for a gas turbine compressor intake heating system as described in any of the above embodiments.

[0037] This application also provides 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 capacity optimization method for a gas turbine compressor intake heating system described in any of the above embodiments.

[0038] The beneficial effects of this application are:

[0039] This application provides a method, apparatus, equipment, and storage medium for optimizing the capacity of a gas turbine compressor inlet heating system. The method is based on hourly boundary parameters throughout the year, combined with the unit's gas consumption rate characteristic function curve and the unit's compressor air flow characteristic function, to calculate the total annual benefit brought by configuring a gas turbine compressor inlet heating system under different inlet heating capacities, and on this basis, calculates the equivalent unit benefit, thereby obtaining the optimal inlet heating system capacity and realizing the optimization of the gas turbine compressor inlet heating system capacity of a combined cycle unit. Attached Figure Description

[0040] Figure 1 is a flowchart of the capacity optimization method for a gas turbine compressor intake heating system provided in this application;

[0041] Figure 2 is a flowchart of a capacity optimization method for a gas turbine compressor intake heating system provided in this application;

[0042] Figure 3 shows the 24-hour meteorological parameters for a specific day provided in this application;

[0043] Figure 4 shows the compressor air characteristic function F of a unit under partial load provided in this application. air =f2(T) curve diagram;

[0044] Figure 5 is a schematic diagram of the gas consumption rate characteristic function b=f1(T,P) of a unit under partial load conditions provided in this application;

[0045] Figure 6 is a schematic diagram showing the relationship between equivalent unit revenue and intake heating capacity provided in this application;

[0046] Figure 7 is a schematic diagram of a capacity optimization device for a gas turbine compressor intake heating system provided in this application. Detailed Implementation

[0047] The present application will now be described in detail with reference to the accompanying drawings and specific embodiments.

[0048] This application provides a method for optimizing the capacity of a gas turbine compressor inlet heating system, as shown in Figures 1 and 2, including:

[0049] Step A: Construct the compressor airflow characteristic function F of the gas turbine compressor in the gas turbine compressor intake heating system based on the annual time-segmented operating boundary parameters. air ;

[0050] In one embodiment, this application uses a "one-to-one" M701F4 gas turbine and its combined cycle unit as an example for calculation. The operating boundary parameters for different time periods over the past year were obtained, including atmospheric pressure p0, atmospheric temperature T0, atmospheric humidity RH0, unit load P, and gas price B. gas One data point was collected every hour, for a total of 8760 data points. Taking atmospheric temperature and humidity as examples, the 24-hour data trend chart for a certain day is shown in Figure 3. Annual gas price B gas =3.2Nm 3 / (kW·h).

[0051] A thermodynamic variable operating condition model of the coupled gas turbine compressor inlet cooling system was established, and the compressor air characteristic function F of the unit was determined. air =f2(T), as shown in Figure 4.

[0052] It should be noted that in this step, the gas consumption rate characteristic function b=f1(T,P) of the unit under partial load was also constructed based on the boundary parameters of the gas turbine compressor's operation in different time periods throughout the year, as shown in Figure 5, for use in subsequent calculations.

[0053] Step B: Based on the compressor airflow characteristic function F of the unit air Calculate the air temperature T after the intake heating system at the i-th time point, given the intake heating system capacity Q. 1,i ;

[0054] In one embodiment, the gas consumption rate characteristic function of the unit when configuring the gas turbine compressor intake heating system under different loads and atmospheric temperatures is as follows:

[0055] b = f1(T,P) = a i ×T 2 +b i ×T+c i (When the unit load is P) i hour)

[0056] The compressor air characteristic functions for different load units are as follows: F air =f2(P)=d×P 2 +e×P+f

[0057] Where: b is the unit gas consumption rate, Nm 3 / (kW·h); F air t / h is the air flow rate of the unit's compressor; T is the atmospheric temperature (°C); P is the unit's output power (MW); a to f are constants that can be obtained from the thermodynamic characteristic data provided by the manufacturer or calculated by establishing a thermodynamic simulation model.

[0058] It should be noted that, given the intake heating system capacity Q, since the heating process is an isohumidity enthalpy rise process, the air temperature T at the i-th time point after the intake heating system can be calculated based on the isohumidity enthalpy rise process. 1,i :

[0059] Among them, atmospheric saturated vapor pressure p b,i Calculation method: p b,i =0.0901×T 0,i 3 -1.4122×T 0,i 2 +86.9604×T 0,i +474.7993

[0060] Atmospheric moisture content D 0,i and atmospheric enthalpy H 0,i Calculation method:

[0061] According to the above formula, given the intake heating system capacity Q, the enthalpy H of the heated air is... 1,i and air temperature T 1,i The calculation method is as follows:

[0062] In the formula: p b,i The hourly atmospheric saturated vapor pressure is expressed in Pa and T. 0,i The atmospheric temperature is expressed as an hourly value in °C; D 0,i Hourly atmospheric moisture content, Pa; p 0,i Hourly atmospheric pressure, kPa; RH 0,i Hourly atmospheric humidity, %; H 0,i Hourly atmospheric enthalpy, kJ / kg; H 1,i The enthalpy of air after heating for each hour is expressed in kJ / kg; T 1,i The temperature of the air after heating for each hour is expressed in °C; F air The air flow rate of the unit's compressor is expressed in tons per hour (t / h).

[0063] In one specific embodiment, taking a certain time i as an example, the atmospheric temperature T is calculated. 0,i =14.1℃, atmospheric pressure p 0,i =102.6 kPa, atmospheric humidity RH 0,i =47.0%: p b,i=0.0901 × 14.1 3 -1.4122×14.1 2 +86.9604×14.1+474.7993=1672.9Pa H 0,i =1.006×14.1+4.804×(2.501+0.00186×14.1)=26.3kJ / kg

[0064] Unit power P 0,i =350MW, according to P 0,i When configuring the gas turbine compressor intake heating system, query the compressor air characteristic function F of the unit. air From f2(P), we know that: F air =0.0042591×350 2 +1.6794×350+836.0=1945t / h

[0065] Given an initial intake heating system capacity Q of 0.5MW, and considering that the heating process is an isohyetal enthalpy rise process, the enthalpy and temperature of the heated air are as follows:

[0066] Step C: Based on the air temperature T after the intake heating system at the i-th time point. 1,i Determine whether the current unit is in gas turbine BASELOAD mode. If so, calculate the total benefit of the gas turbine compressor intake heating system by combining the variable gas consumption rate of the unit after the intake heating system is put into operation hourly.

[0067] In one embodiment, it is determined whether the unit is in BASELOAD gas turbine operation at the i-th time point. It should be noted that if so, the total revenue F at the current i-th time point is calculated:

[0068] In the formula: F represents the total revenue in ten thousand yuan per year; Δb i To measure the change in unit gas consumption rate (Nm) after the intake air heating system is put into operation hourly. 3 / (kW·h), obtained by querying the gas consumption rate characteristic function b=f1(T,P) of the unit when configuring the gas turbine compressor intake heating system; T 1,i The temperature of the air after intake heating is expressed in °C; T 0,i The atmospheric temperature is expressed as an hourly value in °C; P i For hourly unit power, MW; B gas Gas price, yuan / Nm 3 .

[0069] If not, then set F=0, until all points have been traversed.

[0070] In one specific embodiment, the unit power P 0,i =350MW, according to P 0,i T 0,i T 1,i By querying the gas consumption rate characteristic function b = f1(T,P) of the gas turbine compressor intake heating system, we can find that:

[0071] The unit's gas consumption rate changes after the intake air heating system is activated as follows: Δb i =0.184908-0.184804=0.000103Nm 3 / (kW·h)

[0072] Then the unit power P at time i 0,i =350MW, not the gas turbine baseload condition, therefore the benefit F is not calculated. i As follows: F i =1000×3.2×0.000103×350=115.4 yuan / h

[0073] Step D: Further determine the air temperature T after the intake heating system. 1,max Is it less than the maximum allowable operating temperature T of the gas turbine? a,max If so, the intake heating system capacity is increased by ΔQ, the given intake heating system capacity Q is updated, and steps B to D are repeated; otherwise, the calculation ends.

[0074] This process continues until all 8760 sets of data have been traversed. The total revenue F calculation table (Q = 0.5MW) is shown in Table 1 (partially shown).

[0075] In one embodiment, the air temperature T after the intake heating system is further determined. 1,max Is it less than the maximum allowable operating temperature T of the gas turbine? a,max Among them, the maximum allowable operating temperature T of the gas turbine a,max Obtain from the manufacturer's design specifications. If it is not in the manufacturer's design specifications, use T. a,max =50℃; the step size for the change in intake heating system capacity is ΔQ = 0.5MW. The increase in intake heating system capacity ΔQ is then added and updated, and the intake heating system's air temperature T at the i-th time point is recalculated based on the updated intake heating system capacity Q. 1,max For this case, we need to consult the manufacturer's information. a,max =50℃, calculated from 8760 data points, T 1,max =38.9℃ less than T a,max Therefore, Q = 0.5 + 0.5 = 1.0 MW, and steps C to D are repeated. This calculation is repeated until Q = 7.0 MW, at which point T... 1,max=50.6℃ greater than T a,max The calculation is then stopped. The total revenue F calculation table (Q = 7.0 MW) is shown in Table 2 (partially displayed).

[0076] Table 2 shows the revenue calculation results (Q = 7.0MW, partial display).

[0077] Step E: Calculate the equivalent cost based on the updated given intake heating system capacity Q, and obtain the optimal intake heating capacity.

[0078] In one embodiment, the equivalent cost COST = a + b × Q, based on the updated calculation method for the given intake heating system capacity Q, is:

[0079] In the formula, Q is the capacity of the updated intake heating system (MW); a and b are constants, which are defined by the user based on the cost of the thermal system modification.

[0080] In one specific embodiment, the constants of the equivalent cost function COST are a = 100 and b = 50. The equivalent unit revenue F / COST calculation results are shown in Table 3 and Figure 6. According to Figure 6, the curve reaches an extreme point at Q = 5.0 MW; therefore, the optimal intake heating system capacity Q is... opt =5.0MW.

[0081] Table 3 Summary of Revenue Calculation Results

[0082] This application also provides a capacity optimization device for a gas turbine compressor inlet heating system, as shown in Figure 7, characterized in that it includes:

[0083] The module is used to construct the compressor airflow characteristic function F of the gas turbine compressor inlet heating system based on the year-round time-segmented operating boundary parameters of the gas turbine compressor. air ;

[0084] The air temperature calculation module is used to calculate the air flow rate characteristic function F of the unit's compressor. air Calculate the air temperature T after the intake heating system at the i-th time point, given the intake heating system capacity Q. 1,i ;

[0085] The system total revenue calculation module is used to calculate the air temperature T after the intake heating system at the i-th time point. 1,i Determine whether the current unit is in gas turbine BASELOAD mode. If so, calculate the total benefit of the gas turbine compressor intake heating system by combining the unit's gas consumption rate variable after the intake heating system is put into operation hourly.

[0086] The judgment module is used to further determine the air temperature T after the intake heating system.1,max Is it less than the maximum allowable operating temperature T of the gas turbine? a,max If so, the intake heating system capacity is increased by ΔQ, the given intake heating system capacity Q is updated, and steps C to D are repeated; otherwise, the calculation ends.

[0087] The output module is used to calculate the equivalent cost based on the updated given intake heating system capacity Q, and to obtain the optimal intake heating capacity.

[0088] It should be noted that the capacity optimization device for the gas turbine compressor intake heating system provided in this application can realize the same method for optimizing the capacity of the gas turbine compressor intake heating system as the above-mentioned method embodiment, and will not be repeated here.

[0089] In another embodiment of this application, a terminal device is provided, comprising a processor and a memory. The memory stores a computer program, which includes program instructions. The processor executes the program instructions stored in the computer storage medium. 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. It is the computing and control core of the terminal, suitable for implementing one or more instructions, specifically suitable for loading and executing one or more instructions to achieve a corresponding method flow or corresponding function. The processor described in this embodiment can be used for the operation of a capacity optimization method for a gas turbine compressor intake heating system.

[0090] In another embodiment of this application, a storage medium is provided, specifically a computer-readable storage medium (Memory). This computer-readable storage medium is a memory device in a terminal device used to store programs and data. It is understood that the computer-readable storage medium here can include both the built-in storage medium in the terminal device and extended storage media supported by the terminal device. The computer-readable storage medium provides storage space that stores the terminal's operating system. Furthermore, this storage space also stores one or more instructions suitable for loading and execution by a processor. These instructions can be one or more computer programs (including program code). It should be noted that the computer-readable storage medium here can be a high-speed RAM memory or a non-volatile memory, such as at least one disk storage device. The processor can load and execute one or more instructions stored in the computer-readable storage medium to implement the corresponding steps of the gas turbine compressor intake heating system capacity optimization method in the above embodiments.

[0091] Those skilled in the art will understand that embodiments of this application can be provided as methods, systems, or computer program products. Therefore, this application can take the form of a completely hardware embodiment, a completely software embodiment, or an embodiment combining software and hardware aspects. Furthermore, this application can take the form of a computer program product embodied on one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) containing computer-usable program code.

[0092] This application is described with reference to flowchart illustrations and / or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of this application. It will be understood that each block of the flowchart illustrations and / or block diagrams, and combinations of blocks in the flowchart illustrations and / or block diagrams, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, special-purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in one or more flowchart illustrations and / or one or more block diagrams.

[0093] These computer program instructions may also be stored in a computer-readable storage medium that can direct a computer or other programmable data processing device to function in a particular manner, such that the instructions stored in the computer-readable storage medium produce an article of manufacture including instruction means that implement the functions specified in one or more flowcharts and / or one or more block diagrams.

[0094] These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer-implemented process, such that the instructions, which execute on the computer or other programmable apparatus, provide steps for implementing the functions specified in one or more flowcharts and / or one or more block diagrams.

[0095] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application and not to limit them. Although this application has been described in detail with reference to the above embodiments, those skilled in the art should understand that modifications or equivalent substitutions can still be made to the specific implementation of this application. Any modifications or equivalent substitutions that do not depart from the spirit and scope of this application should be covered within the protection scope of the claims of this application.

Claims

1. A method for optimizing the capacity of an intake air heating system for a gas turbine compressor, characterized in that, include: Step A: Construct the compressor air flow characteristic function F of the gas turbine compressor intake air heating system unit according to the annual time-division operation boundary parameters of the gas turbine compressor air ; Step B: Calculate the air temperature T air after the intake heating system at the i 1,i th time point based on the compressor air flow characteristic function F Step C: the temperature T of the air after the intake heating system according to the i th time point 1,i determining whether the current unit is in the base load condition of the gas turbine, and if so, calculating the total benefit of the intake heating system of the gas turbine compressor combined with the change of the gas consumption rate of the unit after the intake heating system is put into operation hour by hour; Step D: Further determine the air temperature T after the intake heating system 1,max whether it is less than the maximum allowable operating temperature T of the engine a,max If yes, increase the capacity of the intake heating system ΔQ, update the given capacity Q of the intake heating system, and repeat steps C to D, otherwise end the calculation; Step E: Calculate the equivalent cost based on the updated given intake heating system capacity Q, and obtain the optimal intake heating capacity.

2. The capacity optimization method for the gas turbine compressor inlet heating system as described in claim 1, characterized in that, The step D further comprises: when the current hourly unit power judges that the current unit is not in the gas turbine BASELOAD condition, then another benefit F i = 0.

3. The capacity optimization method for the gas turbine compressor inlet heating system as described in claim 1, characterized in that, The operation boundary parameters include atmospheric pressure p0, atmospheric temperature T0, atmospheric humidity RH0, unit load P, and gas price B gas .

4. The capacity optimization method for the gas turbine compressor inlet heating system as described in claim 1, characterized in that, The function F of the air flow rate of the compressor of the unit when constructing the intake heating system of the compressor of the gas turbine is constructed according to the following formula air : F air = f2(P) = d x P 2 + e x P + f In the formula, F air is the air flow of the unit compressor, t / h; T is the atmospheric temperature, ℃; P is the unit output power, MW; a and e are constants.

5. The capacity optimization method for the gas turbine compressor inlet heating system as described in claim 1, characterized in that, The step A further comprises constructing the gas consumption rate characteristic function of the gas turbine compressor intake air heating system unit according to the following formula based on the annual time period operation boundary parameters of the gas turbine compressor: b=f1(T,P)=a i ×T 2 +b i ×T+c i wherein: b is the gas consumption rate of the unit, Nm 3 (kW·h), wherein a, b, c are all constants.

6. The capacity optimization method for the gas turbine compressor inlet heating system as described in claim 1, characterized in that, Step B: Based on the compressor airflow characteristic function F of the unit air Calculate the air temperature T after the intake heating system at the i-th time point, given the intake heating system capacity Q. 1,i include: Step S1: Calculate the atmospheric saturated vapor pressure p according to the following formula. b,i : p b,i =0.0901×T 0,i 3 -1.4122×T 0,i 2 +86.9604×T 0,i +474.7993 Step S2: Based on the atmospheric saturated vapor pressure p b,i Calculate atmospheric moisture content D 0,i and atmospheric enthalpy H 0,i : Step S3: Based on the atmospheric moisture content D 0,i and atmospheric enthalpy H 0,i Calculate the enthalpy H of the heated air. 1,i and air temperature T 1,i : In the formula: p b,i The hourly atmospheric saturated vapor pressure is expressed in Pa and T. 0,i The atmospheric temperature is expressed as an hourly value in °C; D 0,i Hourly atmospheric moisture content, Pa; p 0,i Hourly atmospheric pressure, kPa; RH 0,i Hourly atmospheric humidity, %; H 0,i Hourly atmospheric enthalpy, kJ / kg; H 1,i The enthalpy of air after heating for each hour is expressed in kJ / kg; T 1,i The temperature of the air after heating for each hour is expressed in °C; F air The air flow rate of the unit's compressor is expressed in tons per hour (t / h).

7. The capacity optimization method for the gas turbine compressor inlet heating system as described in claim 1, characterized in that, The total benefit F of the gas turbine compressor intake heating system is calculated as follows: In the formula: F represents the total revenue in ten thousand yuan per year; Δb i To measure the change in unit gas consumption rate (Nm) after the intake air heating system is put into operation hourly. 3 / (kW·h), obtained by querying the gas consumption rate characteristic function b=f1(T,P) of the unit when configuring the gas turbine compressor intake heating system; T 1,i The temperature of the air after hourly intake heating is expressed in °C. T 0,i The atmospheric temperature is expressed as an hourly value in °C; P i For hourly unit power, MW; B gas Gas price, yuan / Nm 3 .

8. The capacity optimization method for the gas turbine compressor inlet heating system as described in claim 1, characterized in that, The equivalent cost is calculated as follows: COST = a + b × Q In the formula, Q is the capacity of the updated intake heating system (MW); a and b are constants, which are defined by the user based on the cost of the thermal system modification.

9. A capacity optimization device for the inlet heating system of a gas turbine compressor, characterized in that, include: The module is used to construct the compressor airflow characteristic function F of the gas turbine compressor inlet heating system based on the year-round time-segmented operating boundary parameters of the gas turbine compressor. air ; The air temperature calculation module is used to calculate the air flow rate characteristic function F of the compressor of the unit. air Calculate the air temperature T after the intake heating system at the i-th time point, given the intake heating system capacity Q. 1,i ; The system total revenue calculation module is used to calculate the air temperature T after the intake heating system at the i-th time point. 1,i The total benefit of the gas turbine compressor intake heating system is calculated by varying the unit's gas consumption rate after the intake heating system is put into operation hourly. The judgment module is used to further determine the air temperature T after the intake heating system. 1,max Is it less than the maximum allowable operating temperature T of the gas turbine? a,max If so, the intake heating system capacity is increased by ΔQ, the given intake heating system capacity Q is updated, and steps C to D are repeated; otherwise, the calculation ends. The output module is used to calculate the equivalent cost based on the updated given intake heating system capacity Q, and to obtain the optimal intake heating capacity.

10. A computer 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 capacity optimization method for a gas turbine compressor intake heating system as described in any one of claims 1 to 8.

11. A computer-readable storage medium storing a computer program, characterized in that, When the computer program is executed by the processor, it implements the steps of the capacity optimization method for the gas turbine compressor intake heating system as described in any one of claims 1 to 8.

Images