Frequency modulation response control method and system for compressed air energy storage power generation

Abstract

The invention discloses a frequency modulation response control method and system for compressed air energy storage power generation, and relates to the technical field of compressed air energy storage, and the method comprises the steps: obtaining a primary frequency modulation signal, and automatically adjusting the inlet temperature of an expansion machine; sending the signal as a feedback signal to a control system; and according to an output signal of the control system, the executing mechanism heater heats the gas at the inlet of the expansion machine. Through the improved control strategy, quick response can be achieved under the condition of primary frequency modulation, the inlet temperature of the expansion machine is effectively controlled, the response speed of the primary frequency modulation of the system is increased, through the technical scheme, the CAES system can operate more stably in the face of power grid fluctuation, and the system reliability is improved. The method plays an important role in promoting commercial application of a compressed air energy storage technology.

Description

Technical Field

[0001] The present invention relates to the technical field of compressed air energy storage, and in particular to a frequency modulation response control method and system for compressed air energy storage power generation. Background Art

[0002] With the large-scale access of new energy to the grid, the power system faces the challenge of "low inertia and weak support", grid frequency regulation resources are becoming increasingly scarce, and the problem of system frequency stability is becoming more and more serious. In this context, advanced adiabatic compressed air energy storage (AA-CAES) has attracted widespread attention due to its advantages such as large capacity and long life. The AA-CAES system involves gas-heat dynamic coupling in the process of energy storage and release, and the frequency regulation characteristics are complex, and the frequency regulation potential needs to be explored. Traditional compressed air energy storage systems have limitations in frequency regulation response, especially in the application of centrifugal compressors. Due to flow restrictions, the frequency regulation performance is limited, affecting the dynamic response capability of the system. In addition, there is little research on the grid-related performance of existing AA-CAES generators such as load shedding and frequency regulation auxiliary services, and the advantages of AA-CAES power stations cannot be fully utilized.

[0003] In order to solve the above problems, researchers have proposed a variety of control strategies to optimize the frequency regulation performance of the AA-CAES system. For example, the advanced adiabatic compressed air energy storage primary frequency regulation control strategy based on optimal dynamic power compensation realizes the system frequency regulation requirements under the minimum dynamic power compensation of AA-CAES through dynamic simulation model and frequency regulation transfer function design. In addition, there are studies that propose a method for the CAES system to participate in the primary frequency regulation of the power grid in both directions, and effectively improve the frequency regulation capability of the power grid by constructing functional modules on the power generation side and the power consumption side. Summary of the invention

[0004] In view of the problems existing in the existing frequency modulation response control method and system for compressed air energy storage power generation, the present invention is proposed.

[0005] Therefore, the present invention uses a frequency regulation response control method of compressed air energy storage power generation to solve the problem that there is little research on the grid-related performance of existing AA-CAES generator sets such as load shedding and frequency regulation auxiliary services, which cannot give full play to the advantages of AA-CAES power stations.

[0006] In order to solve the above technical problems, the present invention provides the following technical solutions:

[0007] In the first aspect, an embodiment of the present invention provides a frequency modulation response control method for compressed air energy storage power generation, which includes setting a temperature control system based on the inlet of the expander, obtaining a primary frequency modulation signal, and automatically adjusting the inlet temperature of the expander; installing a temperature sensor at the inlet of the expander to monitor the inlet temperature and send it as a feedback signal to the control system; calculating the target temperature of the frequency modulation based on the feedback signal and the primary frequency modulation signal, and outputting the signal to the temperature control system; according to the output signal of the control system, the actuator heater heats the gas at the inlet of the expander.

[0008] As a preferred solution of the frequency modulation response control method of compressed air energy storage power generation of the present invention, wherein: the temperature adjustment system is provided including a temperature adjustment system at the inlet of the expander, and the system automatically adjusts the inlet temperature of the expander according to the primary frequency modulation signal;

[0009] Compressed air energy storage power generation includes an expansion unit, a generator, a power grid, a high-pressure main gas valve, an expander inlet regulating valve, an expander outlet regulating valve, a power regulating valve, a surge regulating valve, a heat exchange valve, a gas storage tank, an expander outlet exhaust valve, a plate heat exchanger, a heat storage tank, a cold storage tank and a heat pump;

[0010] The electric energy generated by the generator is connected to the power grid through the grid-connected switch. Between the gas storage tank and the expander, it passes through the high-pressure main gas valve, and the power regulating valve and the impulse regulating valve are connected in parallel. The power regulating valve and the heat exchange valve are pneumatically operated and the valve opening is automatically adjusted. The front and rear regulating valves of the expander are pneumatically operated and the valve opening is automatically adjusted.

[0011] As a preferred solution of the frequency modulation response control method for compressed air energy storage power generation of the present invention, wherein: automatically adjusting the inlet temperature of the expander includes controlling the inlet temperature of the expander by controlling the opening of the heat exchange valve, the exhaust valve is pneumatic, and the opening of each valve changes from 0 to 1;

[0012] When a frequency modulation instruction appears, the frequency disturbance value and the rated speed enter the adder for subtraction, enter the dead zone module, perform per-unit processing and frequency difference calculation again, and finally enter the multiplication module to multiply with the rated power to output the power adjustment value signal;

[0013] At the moment of identifying the primary frequency modulation signal, the temperature control system is running, and the inlet temperature of the expander is controlled to T by adjusting the opening of the heat exchange valve. a , T b , T c At this time, the unit power changes from W a Change to W b It takes t seconds to complete one frequency modulation action.

[0014] As a preferred solution of the frequency modulation response control method of compressed air energy storage power generation of the present invention, the transfer function of temperature control is:

[0015]

[0016] The measurement module measures the difference between the actual expander inlet temperature and the target temperature, multiplies it by a ratio and enters the PID to compare with the set value to control the heat exchange valve opening to control the inlet temperature; K p , T I , T D They are proportional coefficient, integral time and derivative time respectively.

[0017] As a preferred solution of the frequency modulation response control method of compressed air energy storage power generation of the present invention, wherein: the target temperature for calculating the frequency modulation includes the normal rated power W of the air energy storage power generation system e When running under , the frequency fluctuation value is Δf=0.2Hz, the corresponding speed change value is 12r / min, the primary frequency modulation system responds, the per unit value and the frequency difference calculation value are a and b respectively, and the dead zone value is 2r / min;

[0018] The grid frequency changes to 50.2Hz, the system recognizes the primary frequency modulation signal and responds quickly. The temperature control system responds to the heat exchange valve opening from A% to B%, and the expander inlet temperature changes from T 04 , T 05 , T 06 Change to T 14 , T 15 and T 16 ;

[0019] The primary frequency modulation system performs per-unit processing and frequency difference calculation respectively, and finally calculates the power change value to be ΔP. The unit power changes from W0 to W1 through the power regulation system. After the unit is stable, the primary frequency modulation is completed, and the time taken is t.

[0020] As a preferred solution of the frequency modulation response control method of compressed air energy storage power generation of the present invention, wherein: the actuator heater heats the gas at the inlet of the expander including the following:

[0021] The system recognizes the primary frequency modulation signal and responds quickly. The temperature control system responds to the heat exchange valve opening from A'% to B'%, and the expansion machine inlet temperature changes from T' 04 , T' 05 , T' 06 Change to T' 14 , T' 15 , T' 16 ;

[0022] The primary frequency modulation system performs per-unit calculation and frequency difference processing respectively, and finally calculates the power change value to be ΔP'. The unit power changes from W0' to W1' through the power regulation system. After the unit is stable, the primary frequency modulation is completed, and the time taken is t'.

[0023] As a preferred solution of the frequency modulation response control method of compressed air energy storage power generation of the present invention, the frequency modulation response control includes the following steps:

[0024] Identify the grid frequency difference signal, quickly respond based on the primary frequency modulation system, the temperature control system responds, and the heat exchange valve quickly controls the expander and inlet temperature to the set value;

[0025] Through the primary frequency modulation system and temperature control system unit power, the unit power is adjusted from W a Change to W b , the power of the unit is stabilized at W after one frequency modulation action is completed b The expander and inlet temperatures are stable at T a , T b , T c .

[0026] In the second aspect, an embodiment of the present invention provides a frequency modulation response control system for compressed air energy storage power generation, which includes: an acquisition module, which sets a temperature control system based on the inlet of the expander, obtains a primary frequency modulation signal, and automatically adjusts the inlet temperature of the expander; a monitoring module, which installs a temperature sensor at the inlet of the expander, monitors the inlet temperature, and sends it as a feedback signal to the control system; a control module, which calculates the target temperature of the frequency modulation based on the feedback signal and the primary frequency modulation signal, and outputs a signal to the temperature control system, and according to the output signal of the control system, the actuator heater heats the gas at the inlet of the expander.

[0027] In a third aspect, an embodiment of the present invention provides a computer device, including a memory and a processor, wherein the memory stores a computer program, wherein: when the processor executes the computer program, any step of the above-mentioned frequency modulation response control method for compressed air energy storage power generation is implemented.

[0028] In a fourth aspect, an embodiment of 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, any step of the above-mentioned frequency modulation response control method for compressed air energy storage power generation is implemented.

[0029] The beneficial effects of the present invention are as follows: through an improved control strategy, the present invention can respond quickly under primary frequency modulation, effectively control the expander inlet temperature, and improve the response speed of the system's primary frequency modulation. Through the technical solution of the present invention, the CAES system can operate more stably in the face of power grid fluctuations, which plays an important role in promoting the commercial application of compressed air energy storage technology. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work. Among them:

[0031] Figure 1 A flow chart of a frequency modulation response control method and system for compressed air energy storage power generation provided by one embodiment of the present invention.

[0032] Figure 2 A primary frequency regulation control schematic diagram of a frequency regulation response control method and system for compressed air energy storage power generation provided by an embodiment of the present invention.

[0033] Figure 3 A schematic diagram of temperature control of a frequency modulation response control method and system for compressed air energy storage power generation provided by an embodiment of the present invention. DETAILED DESCRIPTION

[0034] In order to make the above-mentioned purposes, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below in conjunction with the drawings of the specification. Obviously, the described embodiments are part of the embodiments of the present invention, but not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary persons in the art without creative work should fall within the scope of protection of the present invention.

[0035] In the following description, many specific details are set forth to facilitate a full understanding of the present invention, but the present invention may also be implemented in other ways different from those described herein, and those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0036] Secondly, the term "one 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 term "in one embodiment" that appears in different places in this specification does not necessarily refer to the same embodiment, nor does it refer to a separate or selective embodiment that is mutually exclusive with other embodiments.

[0037] The present invention is described in detail with reference to the schematic diagram. When describing the embodiments of the present invention, for the sake of convenience, the cross-sectional diagrams showing the device structure will not be partially enlarged according to the general scale, and the schematic diagrams are only examples, which should not limit the scope of protection of the present invention. In addition, in actual production, the three-dimensional dimensions of length, width and depth should be included.

[0038] At the same time, in the description of the present invention, it should be noted that the directions or positional relationships indicated by the terms "upper, lower, inner and outer" are based on the directions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as limiting the present invention. In addition, the terms "first, second or third" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0039] In the present invention, unless otherwise clearly specified and limited, the terms "install, connect, connect" should be understood in a broad sense, for example: it can be a fixed connection, a detachable connection or an integral connection; it can also be a mechanical connection, an electrical connection or a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0040] Example 1

[0041] Reference Figure 1 to Figure 3 , which is the first embodiment of the present invention, and provides a frequency modulation response control method for compressed air energy storage power generation, comprising:

[0042] S1: A temperature control system is set based on the inlet of the expander, a frequency modulation signal is obtained, and the inlet temperature of the expander is automatically adjusted.

[0043] The temperature regulating system includes a temperature regulating system at the inlet of the expander, which automatically regulates the inlet temperature of the expander according to the primary frequency modulation signal;

[0044] Compressed air energy storage power generation includes an expansion unit, a generator, a power grid, a high-pressure main gas valve, an expander inlet regulating valve, an expander outlet regulating valve, a power regulating valve, a surge regulating valve, a heat exchange valve, a gas storage tank, an expander outlet exhaust valve, a plate heat exchanger, a heat storage tank, a cold storage tank and a heat pump;

[0045] The electric energy generated by the generator is connected to the power grid through the grid-connected switch. Between the gas storage tank and the expander, it passes through the high-pressure main gas valve, and the power regulating valve and the impulse regulating valve are connected in parallel. The power regulating valve and the heat exchange valve are pneumatically operated and the valve opening is automatically adjusted. The front and rear regulating valves of the expander are pneumatically operated and the valve opening is automatically adjusted.

[0046] S1.1: Automatically adjust the inlet temperature of the expander, including controlling the inlet temperature of the expander by controlling the opening of the heat exchange valve. The exhaust valve is pneumatic, and the opening of each valve changes from 0 to 1;

[0047] When a frequency modulation instruction appears, the frequency disturbance value and the rated speed enter the adder for subtraction, enter the dead zone module, perform per-unit processing and frequency difference calculation again, and finally enter the multiplication module to multiply with the rated power to output the power adjustment value signal;

[0048] At the moment of identifying the primary frequency modulation signal, the temperature control system is running, and the inlet temperature of the expander is controlled to T by adjusting the opening of the heat exchange valve. a , T b , T c At this time, the unit power changes from W a Change to W b It takes t seconds to complete one frequency modulation action.

[0049] S1.2: The transfer function for temperature control is:

[0050]

[0051] The measurement module measures the difference between the actual expander inlet temperature and the target temperature, multiplies it by a ratio and enters the PID to compare with the set value to control the heat exchange valve opening to control the inlet temperature; K p , T I , T D They are proportional coefficient, integral time and derivative time respectively.

[0052] S2: Calculate the target temperature of the frequency modulation according to the feedback signal and the primary frequency modulation signal, and output the signal to the temperature control system. According to the output signal of the control system, the actuator heater heats the gas at the inlet of the expander.

[0053] Among them, the target temperature for calculating frequency regulation includes the normal rated power W of the air energy storage power generation system e When running under , the frequency fluctuation value is Δf=0.2Hz, the corresponding speed change value is 12r / min, the primary frequency modulation system responds, the per unit value and the frequency difference calculation value are a and b respectively, and the dead zone value is 2r / min;

[0054] The grid frequency changes to 50.2Hz, the system recognizes the primary frequency modulation signal and responds quickly. The temperature control system responds to the heat exchange valve opening from A% to B%, and the expander inlet temperature changes from T 04 , T 05 , T 06 Change to T 14 , T 15 and T 16 ;

[0055] The primary frequency modulation system performs per-unit processing and frequency difference calculation respectively, and finally calculates the power change value to be ΔP. The unit power changes from W0 to W1 through the power regulation system. After the unit is stable, the primary frequency modulation is completed, and the time taken is t.

[0056] S2.1: The actuator heater heats the gas at the expander inlet as follows:

[0057] The system recognizes the primary frequency modulation signal and responds quickly. The temperature control system responds to the heat exchange valve opening from A'% to B'%, and the expansion machine inlet temperature changes from T' 04 , T' 05 , T' 06 Change to T' 14 , T' 15 , T' 16 ;

[0058] The primary frequency modulation system performs per-unit calculation and frequency difference processing respectively, and finally calculates the power change value to be ΔP'. The unit power changes from W0' to W1' through the power regulation system. After the unit is stable, the primary frequency modulation is completed, and the time taken is t'.

[0059] S2.2: Frequency modulation response control includes the following steps:

[0060] Identify the grid frequency difference signal, quickly respond based on the primary frequency modulation system, the temperature control system responds, and the heat exchange valve quickly controls the expander and inlet temperature to the set value;

[0061] Through the primary frequency modulation system and temperature control system unit power, the unit power is adjusted from W a Change to W b , the power of the unit is stabilized at W after one frequency modulation action is completed b The expander and inlet temperatures are stable at T a , T b , T c .

[0062] In a preferred embodiment, a frequency modulation response control system for compressed air energy storage power generation includes an acquisition module, which sets a temperature control system based on the inlet of the expander, obtains a primary frequency modulation signal, and automatically adjusts the inlet temperature of the expander; a monitoring module, which installs a temperature sensor at the inlet of the expander, monitors the inlet temperature, and sends it as a feedback signal to the control system; a control module, which calculates the target temperature of the frequency modulation based on the feedback signal and the primary frequency modulation signal, and outputs a signal to the temperature control system. According to the output signal of the control system, the actuator heater heats the gas at the inlet of the expander.

[0063] The above-mentioned unit modules may be embedded in or independent of a processor in a computer device in the form of hardware, or may be stored in a memory in a computer device in the form of software, so that the processor can call and execute operations corresponding to the above-mentioned modules.

[0064] The computer device may be a terminal, and the computer device includes a processor, a memory, a communication interface, a display screen and an input device connected via a system bus. The processor of the computer device is used to provide computing and control capabilities. The memory of the computer device includes a non-volatile storage medium and an internal memory. The non-volatile storage medium stores an operating system and a computer program. The internal memory provides an environment for the operation of the operating system and the computer program in the non-volatile storage medium. The communication interface of the computer device is used to communicate with an external terminal in a wired or wireless manner, and the wireless manner can be achieved through WIFI, an operator network, NFC (near field communication) or other technologies. The display screen of the computer device may be a liquid crystal display screen or an electronic ink display screen, and the input device of the computer device may be a touch layer covering the display screen, or a key, trackball or touchpad provided on the housing of the computer device, or an external keyboard, touchpad or mouse, etc.

[0065] In summary, the present invention can respond quickly under primary frequency modulation through an improved control strategy, effectively control the expander inlet temperature, and improve the response speed of the system's primary frequency modulation. Through the technical solution of the present invention, the CAES system can operate more stably when facing power grid fluctuations, which plays an important role in promoting the commercial application of compressed air energy storage technology.

[0066] Example 2

[0067] Reference Figure 1 to Figure 3 , which is the second embodiment of the present invention, this embodiment provides a frequency modulation response control method and system for compressed air energy storage power generation. In order to verify the beneficial effects of the present invention, scientific demonstration is carried out through simulation experiments.

[0068] In the technical experiment process of the present invention, the compressed air energy storage power generation system is first connected to the power grid to ensure that all components, including the expansion unit, generator, high-pressure main gas valve, and expander inlet regulating valve, are in normal working condition. At the beginning of the experiment, the power grid frequency rises from the standard 50Hz to 50.2Hz. The system immediately detects this frequency deviation and triggers a frequency modulation response mechanism. At this time, the temperature sensor at the expander inlet records the initial temperature as 20°C. The temperature regulation system responds quickly after receiving the frequency modulation signal, and adjusts the opening of the heat exchange valve from the initial 30% to 70%, so that the expander inlet temperature rises to the preset target temperature of 35°C within 10 seconds. In this process, the PID controller measures the actual temperature and the The difference between the target temperatures is precisely controlled by setting the parameters of the proportional coefficient 1.2, the integral time 30 seconds and the differential time 10 seconds to precisely control the opening of the heat exchange valve. As the inlet temperature reaches the target value, the output power of the expander is correspondingly increased from 1000kW to 1200kW, completing the effective compensation for the grid frequency fluctuation. The entire frequency modulation response process takes about 30 seconds, and finally the grid frequency is restored to 50Hz, verifying the ability of the technical solution of the present invention in improving the stability of the grid. In addition, the experiment also proves that by precisely controlling the inlet temperature of the expander, the frequency modulation performance of the compressed air energy storage power generation system can be significantly improved to meet the requirements of the power system for rapid response to frequency modulation. The experimental data of the present invention are shown in Table 1 below:

[0069] Table 1 Experimental data table of the present invention

[0070] Data Types Numeric Grid frequency before the experiment 50Hz The grid frequency changes during the experiment +0.2Hz to 50.2Hz Initial expander inlet temperature 20℃ Initial opening of heat exchange valve 30％ Heat exchange valve opening after adjustment 70％ Target expander inlet temperature 35℃ Time required for the temperature to reach the target value 10 seconds PID controller proportional coefficient 1.2 PID controller integration time 30 seconds PID controller derivative time 10 seconds Expander output power before frequency modulation response 1000kW Expander output power after frequency modulation response 1200kW Total time to complete FM response 30 seconds Grid frequency after frequency regulation response 50Hz

[0071] Table 1 clearly shows the key data points in the experiment, which helps to understand the experimental process and its results. The present invention is compared with the prior art as shown in Table 2 below:

[0072] Table 2 Comparison between the present invention and the prior art

[0073]

[0074] Table 2 clearly demonstrates the advantages of the technical solution of the present invention in many aspects, highlighting its significant improvements in frequency modulation response speed, temperature control accuracy, power adjustment range, etc.

[0075] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, which should all be included in the scope of the claims of the present invention.

Claims

1. A frequency modulation response control method for compressed air energy storage power generation, characterized in that: include, A temperature regulating system is set up based on the inlet of the expander to obtain a frequency modulation signal and automatically adjust the inlet temperature of the expander; a temperature sensor is installed at the inlet of the expander to monitor the inlet temperature and send it as a feedback signal to the control system; According to the feedback signal and the primary frequency modulation signal, the target temperature of the frequency modulation is calculated, and the signal is output to the temperature control system. According to the output signal of the control system, the actuator heater heats the gas at the expander inlet.

2. The frequency modulation response control method for compressed air energy storage power generation according to claim 1, characterized in that: The temperature regulating system includes a temperature regulating system at the inlet of the expander, which automatically regulates the inlet temperature of the expander according to the primary frequency modulation signal; Compressed air energy storage power generation includes an expansion unit, a generator, a power grid, a high-pressure main gas valve, an expander inlet regulating valve, an expander outlet regulating valve, a power regulating valve, a surge regulating valve, a heat exchange valve, a gas storage tank, an expander outlet exhaust valve, a plate heat exchanger, a heat storage tank, a cold storage tank and a heat pump; The electric energy generated by the generator is connected to the power grid through the grid-connected switch. Between the gas storage tank and the expander, it passes through the high-pressure main gas valve, and the power regulating valve and the impulse regulating valve are connected in parallel. The power regulating valve and the heat exchange valve are pneumatically operated and the valve opening is automatically adjusted. The front and rear regulating valves of the expander are pneumatically operated and the valve opening is automatically adjusted.

3. The frequency modulation response control method for compressed air energy storage power generation according to claim 2, characterized in that: Automatically adjusting the inlet temperature of the expander includes controlling the opening of the heat exchange valve to control the inlet temperature of the expander. The exhaust valve is pneumatically operated, and the opening of each valve changes from 0 to 1. When a frequency modulation instruction appears, the frequency disturbance value and the rated speed enter the adder for subtraction, enter the dead zone module, perform per-unit processing and frequency difference calculation again, and finally enter the multiplication module to multiply with the rated power to output the power adjustment value signal; At the moment of identifying the primary frequency modulation signal, the temperature control system is running, and the inlet temperature of the expander is controlled to T by adjusting the opening of the heat exchange valve. a , T b , T c At this time, the unit power changes from W a Change to W b It takes t seconds to complete one frequency modulation action.

4. The frequency modulation response control method for compressed air energy storage power generation according to claim 3, characterized in that: The transfer function for temperature control is: The measurement module measures the difference between the actual expander inlet temperature and the target temperature, multiplies it by a ratio and enters the PID to compare with the set value to control the heat exchange valve opening and control the inlet temperature; K p , T I , T D They are proportional coefficient, integral time and derivative time respectively.

5. The frequency modulation response control method for compressed air energy storage power generation according to claim 4, characterized in that: The target temperature for frequency regulation calculation includes the normal rated power W of the air energy storage power generation system. e When running under , the frequency fluctuation value is Δf=0.2Hz, the corresponding speed change value is 12r / min, the primary frequency modulation system responds, the per unit value and the frequency difference calculation value are a and b respectively, and the dead zone value is 2r / min; The grid frequency changes to 50.2Hz, the system recognizes the primary frequency modulation signal and responds quickly. The temperature control system responds to the heat exchange valve opening from A% to B%, and the expander inlet temperature changes from T 04 , T 05 , T 06 Change to T 14 , T 15 and T 16 ; The primary frequency modulation system performs per-unit processing and frequency difference calculation respectively, and finally calculates the power change value to be ΔP. The unit power changes from W0 to W1 through the power regulation system. After the unit is stable, the primary frequency modulation is completed, which takes time t.

6. The frequency modulation response control method for compressed air energy storage power generation according to claim 5, characterized in that: The actuator heater heats the gas at the expander inlet as follows: The system recognizes the primary frequency modulation signal and responds quickly. The temperature control system responds to the heat exchange valve opening from A'% to B'%, and the expansion machine inlet temperature changes from T' 04 , T' 05 , T' 06 Change to T' 14 , T' 15 , T' 16 ; The primary frequency modulation system performs per-unit calculation and frequency difference processing respectively, and finally calculates the power change value to be ΔP'. The power of the unit changes from W0' to W1' through the power regulation system. After the unit is stable, the primary frequency modulation is completed, and the time taken is t'.

7. The frequency modulation response control method for compressed air energy storage power generation according to claim 6, characterized in that: FM response control includes the following steps: Identify the grid frequency difference signal, quickly respond based on the primary frequency modulation system, the temperature control system responds, and the heat exchange valve quickly controls the expander and inlet temperature to the set value; Through the primary frequency modulation system and temperature control system unit power, the unit power is adjusted from W a Change to W b , the power of the unit is stabilized at W after one frequency modulation action is completed b The expander and inlet temperatures are stable at T a , T b , T c .

8. A frequency modulation response control system for compressed air energy storage power generation, based on the frequency modulation response control method for compressed air energy storage power generation according to any one of claims 1 to 7, characterized in that: include, An acquisition module, which sets a temperature adjustment system based on the inlet of the expander, obtains a primary frequency modulation signal, and automatically adjusts the inlet temperature of the expander; A monitoring module, which installs a temperature sensor at the inlet of the expander to monitor the inlet temperature and send it as a feedback signal to the control system; The control module calculates the target temperature of the frequency modulation according to the feedback signal and the primary frequency modulation signal, and outputs the signal to the temperature regulation system. According to the output signal of the control system, the actuator heater heats the gas at the inlet of the expander.

9. A computer device comprising a memory and a processor, wherein the memory stores a computer program, wherein: When the processor executes the computer program, the steps of the frequency modulation response control method for compressed air energy storage power generation according to any one of claims 1 to 7 are implemented.

10. A computer-readable storage medium having a computer program stored thereon, characterized in that: When the computer program is executed by a processor, the steps of the frequency modulation response control method for compressed air energy storage power generation according to any one of claims 1 to 7 are implemented.

Images