Compressed air energy storage compressor starting method and device

Abstract

The invention relates to the technical field of compression energy storage, in particular to a compressed air energy storage compressor starting method and device. A compressor-motor coupling model is established, the surge phenomenon of a compressor is considered, a surge line of mass flow and input power is constructed, an anti-surge valve opening and closing strategy with a given stability constant as the standard is constructed, the current operation state is judged according to the distance from the operation condition of the compressor to the surge line, and corresponding measures are taken. And safe and efficient control over starting of the compressor is achieved. The model disclosed by the invention is reasonably simplified, and is high in operation speed, high in accuracy and very high in safety. And meanwhile, compared with a traditional compressed air energy storage system, the compressor starting strategy efficiency is higher, and the circulation efficiency of the system is effectively improved.

Description

Technical Field

[0001] The present disclosure relates to the technical field of compressed energy storage, and in particular to a method and device for starting a compressed air energy storage compressor. Background Art

[0002] New energy is developing as an indispensable part of the green, low-carbon and circular economic system. Faced with the high volatility and randomness of wind power and photovoltaic power generation, large-scale energy storage technology has been proposed and studied extensively. Compressed air energy storage, as one of the current mainstream large-scale energy storage technologies, has the advantages of large capacity, long cycle and high efficiency. In the process of designing and evaluating compressed air energy storage systems, simulation modeling of compressed air energy storage systems is an indispensable part. Among them, the modeling of the compressor and the startup process, as one of the core parts, have received widespread attention.

[0003] In the prior art, there are two main methods for the startup process of the compressor. One is to ignore the anti-surge valve and only model the compressor, motor, valves, gas pipelines, etc. contained in the system. This modeling method is relatively simple, less time-consuming and faster, and is suitable for preliminary analysis of the compressed air energy storage system. However, since this modeling method ignores the surge phenomenon of the compressor, that is, when the compressor flow rate is reduced to a certain extent during the startup process, vibration under abnormal conditions will occur. The surge phenomenon will cause irreversible damage to the compressor and needs to be avoided as much as possible. Therefore, the simulation results obtained by this modeling method still need to be verified and are not perfect. The second is to consider the full opening of the anti-surge valve and accurately model all components in the entire compressed air energy storage system. This modeling method has high accuracy and is suitable for accurate analysis of the compressed air energy storage system. However, since the compressed air energy storage system is a model described by a series of differential equations, the system is complex and difficult to solve, and it is difficult to obtain an analysis in a short time. Moreover, since the anti-surge valve is always in an open state, although the surge phenomenon is avoided, it causes a serious decrease in efficiency during the compression process, thereby reducing the circulation efficiency of the entire compressed air energy storage system. There is an urgent need to reasonably simplify the model and propose a more efficient startup method.

[0004] In the current compressed air energy storage system, there are a large number of multi-stage compression systems, that is, the gas is compressed in multiple stages, and multiple compressors are used to complete the compression process. Each stage of the compressor is driven by a corresponding motor. Adjacent compressors are connected end to end by gas pipelines. For the compression system of the above structure, the following reasonable assumptions are made: First, the gas in the compressor volume is evenly distributed, that is, the lumped parameter method is used; second, all compression processes are adiabatic. The design adiabatic compression efficiency of the compressor is set to 0.8; third, the force exerted by the compressor impeller on the air during the dynamic process is equal to that in the steady state; fourth, the heat loss of the compressor is ignored; fifth, since the compressor startup process is a transient process, it is believed that the heat exchanger does not work at this time, so the heat exchanger is ignored.

[0005] In summary, there is an urgent need for a compressed air energy storage compressor starting method based on an anti-surge valve opening and closing strategy. Summary of the invention

[0006] In view of the above problems, the present disclosure provides a method and device for starting a compressed air energy storage compressor.

[0007] In a first aspect, a method for starting a compressed air energy storage compressor is provided, the method comprising:

[0008] Obtain compressor design parameters and motor design parameters of the compression system;

[0009] According to the compressor design parameters and motor design parameters, build the compressor-motor coupling model in Simulink;

[0010] Based on the compressor-motor coupling model, a surge line of mass flow and input power is constructed. The operating conditions within the surge line are regarded as stable conditions, and the conditions outside the surge line are regarded as unstable conditions where surge occurs.

[0011] Setting initial values ​​for state variables of the compressor-motor coupling model;

[0012] According to the comparison between the distance x between the compressor operating state point and the surge line obtained by the simulation of the compressor-motor coupling model and the stability constant γ, the opening and closing of the anti-surge valve are adjusted until the compressor is fully started.

[0013] Furthermore, the compressor design parameters and the motor design parameters of the compression system are obtained, including:

[0014] The rated mass flow rate of the compressor is q m,0 , the rated speed of the compressor is n0, the rated pressure ratio of the compressor is ε0, the adiabatic efficiency of the compressor is η0, the volume of the compressor is V, and the inlet cross-sectional area of ​​the compressor is A in , the outlet cross-sectional area of ​​the compressor is A out, the compression force of the motor is F, the gas density inside the compressor is ρ, and the velocity of the outlet gas is c out , outlet gas temperature T out as a state variable.

[0015] Furthermore, according to the compressor design parameters and the motor design parameters, a compressor-motor coupling model is built in Simulink, including:

[0016] Select the gas density ρ inside the compressor and the outlet gas velocity c out , outlet gas temperature T out As the state variable of the compressor, the integral module in simulink is used Build the compressor system.

[0017] Furthermore, based on the compressor-motor coupling model, a surge line of mass flow and input power is constructed, including:

[0018] The surge line of mass flow and input power is constructed based on the semi-empirical formula of surge instability point derived from stability analysis. The formula is as follows:

[0019]

[0020] where Φ sg and Φ ck are the surge and choke volume flow coefficients, respectively, which are proportional to the volume flow and inversely proportional to the square of the impeller diameter and the speed; M is the turbine Mach number; R L and R H are the ratios of surge and choke volume flow coefficients at the minimum and maximum speeds, respectively; the empirical parameter (B s ,C s ,R L ,R H ) takes values ​​of (1.25, 4.75, 0.225, 0.835); the operating conditions within the surge line are regarded as stable conditions, and the conditions outside the surge line are regarded as unstable conditions where surge occurs, to avoid letting the compressor operate in unstable conditions.

[0021] Furthermore, initial values ​​are set for the state variables of the compressor-motor coupling model, including:

[0022] Set the initial values ​​of the key dynamic parameters of the compressor, that is, the density, speed and temperature are set to 1.184kg / m 3 , 0m / s and 298.15K;

[0023] Set in the integration module in simulink, open the integration module Set the initial value and confirm.

[0024] Furthermore, the distance x of the surge line in the compressor operating state point is defined as follows:

[0025] x=min{||line surge -dot currentstate ||}

[0026] x represents the distance from the operating state point to the surge line, line_{surge} represents the surge line, dot_{currentstate} represents the current operating point, and min{||||} represents the minimum distance from the point to the line.

[0027] Furthermore, the stability constant γ is determined by the following method:

[0028] Obtain safe operation requirements and recommended parameter settings for the compressor based on the technical data and instruction manuals provided by the compressor manufacturer;

[0029] By analyzing the compressor's operating history and surge records, conducting experiments and tests, the stability constant γ is determined;

[0030] When the compressor starts to start, the anti-surge valve is closed. When the distance x between the compressor operating state point and the surge line is greater than the stable constant γ, the anti-surge valve remains closed. When the distance x between the compressor operating state point and the surge line is less than the stable constant γ, the anti-surge valve is opened for a period of time T. After time T, comparisons are continued until the compressor reaches the rated operating state.

[0031] In a second aspect, a compressed air energy storage compressor starting device includes: a parameter acquisition unit, a model building unit, a surge line determination unit, a state variable initial setting unit and a starting unit;

[0032] A parameter acquisition unit, used to obtain compressor design parameters and motor design parameters of a compression system;

[0033] A model building unit is used to build a compressor-motor coupling model in Simulink according to the compressor design parameters and the motor design parameters;

[0034] A surge line determination unit is used to construct a surge line of mass flow and input power based on a compressor-motor coupling model, wherein the operating conditions within the surge line are regarded as stable conditions, and the operating conditions outside the surge line are regarded as unstable conditions where surge occurs;

[0035] A state variable initial setting unit, used for setting initial values ​​of state variables of the compressor-motor coupling model;

[0036] The starting unit is used to adjust the opening and closing of the anti-surge valve according to the comparison between the distance x of the compressor operation state point from the surge line obtained by the compressor-motor coupling model simulation and the stability constant γ until the compressor is fully started.

[0037] In a third aspect, an electronic device includes a processor, a communication interface, a memory, and a communication bus, wherein the processor, the communication interface, and the memory communicate with each other via the communication bus;

[0038] a memory storing a computer program;

[0039] The processor is used to implement the above-mentioned method for starting a compressed air energy storage compressor when executing the computer program stored in the memory.

[0040] In a fourth aspect, a computer-readable storage medium stores a computer program, and when the computer program is executed by a processor, the method for starting a compressed air energy storage compressor is implemented.

[0041] The present disclosure has at least the following beneficial effects:

[0042] The present disclosure aims at the modeling and starting problems of the compression system in the compressed air energy storage system, provides a compressor-motor coupling model to realize the modeling of the compression system, gives detailed modeling steps and formulas, and provides a compressed air energy storage compressor starting method based on the anti-surge valve opening and closing strategy. The outstanding advantages of this method and device are: the model has been reasonably simplified, the operation speed is fast, the accuracy is high and the safety is very strong. At the same time, compared with the traditional compressed air energy storage system compressor starting strategy, it is more efficient and effectively improves the circulation efficiency of the system.

[0043] Other features and advantages of the present disclosure will be described in the following description, and partly become apparent from the description, or be understood by implementing the present disclosure. The purpose and other advantages of the present disclosure can be realized and obtained by the structures indicated in the description and the drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0044] In order to more clearly illustrate the embodiments of the present disclosure or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present disclosure. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0045] Figure 1 This is a flowchart of the startup method according to an embodiment of the present disclosure;

[0046] Figure 2 It is a schematic diagram of a compressed part of the embodiment of the present disclosure;

[0047] Figure 3 This is a schematic diagram of a compressor-motor coupling model according to an embodiment of the present disclosure;

[0048] Figure 4 This is a schematic diagram of the structure of the starting device according to an embodiment of the present disclosure;

[0049] Figure 5 It is a schematic diagram of the structure of an electronic device according to an embodiment of the present disclosure. DETAILED DESCRIPTION

[0050] In order to make the purpose, technical solution and advantages of the embodiments of the present disclosure clearer, the technical solution in the embodiments of the present disclosure will be clearly and completely described below in conjunction with the drawings in the embodiments of the present disclosure. Obviously, the described embodiments are part of the embodiments of the present disclosure, not all of the embodiments. Based on the embodiments in the present disclosure, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present disclosure.

[0051] like Figure 1 As shown, a method for starting a compressed air energy storage compressor comprises:

[0052] S101, obtaining compressor design parameters and motor design parameters of a compression system;

[0053] S102, building a compressor-motor coupling model in simulink according to the compressor design parameters and the motor design parameters;

[0054] S103, based on the compressor-motor coupling model, constructing a surge line of mass flow and input power, wherein the operating condition within the surge line is regarded as a stable condition, and the operating condition outside the surge line is regarded as an unstable condition where surge occurs;

[0055] S104, setting initial values ​​for state variables of the compressor-motor coupling model;

[0056] S105, adjusting the opening and closing of the anti-surge valve according to the comparison between the distance x between the compressor operation state point and the surge line obtained by the compressor-motor coupling model simulation and the stability constant γ, until the compressor is fully started.

[0057] The specific implementation is as follows:

[0058] Compression system information acquisition:

[0059] First, the compressor design parameters and motor design parameters of the compressor system are obtained. Since the compression system we are targeting is a multi-stage compression system, it contains two or more compressors and motors. Here we take a single-stage compressor and motor as an example, and multi-stage compressors and motors can be extended in the same way.

[0060] The information obtained is recorded in the following form: The rated mass flow rate of the compressor is q m,0, the rated speed of the compressor is n0, the rated pressure ratio of the compressor is ε0, the adiabatic efficiency of the compressor is η0, the volume of the compressor is V, and the inlet cross-sectional area of ​​the compressor is A in , the outlet cross-sectional area of ​​the compressor is A out , the compression force of the motor is F. Note that the above are all design parameters, that is, the parameters fixed after the compressor leaves the factory, which are different from variables.

[0061] The schematic diagram of the compression part is as follows Figure 2 As shown, the gas density ρ inside the compressor and the outlet gas velocity c are selected. out , outlet gas temperature T out As state variables, other variables can be expressed by the above state variables. Specifically, there are the following relationships, namely, the mass conservation equation, momentum conservation equation and energy conservation equation of the air inside the compressor:

[0062]

[0063]

[0064]

[0065] where q m represents the mass flow rate of the compressor, p represents the pressure, τ is the time variable, h is the specific enthalpy of the gas, W is the work done by the motor, c p is the specific heat capacity, the subscript in indicates the inlet, and the subscript out indicates the outlet. The rated mass flow rate of the compressor is q m,0 , the rated speed of the compressor is n0, the rated pressure ratio of the compressor is ε0, the adiabatic efficiency of the compressor is η0, the volume of the compressor is V, and the inlet cross-sectional area of ​​the compressor is A in , the outlet cross-sectional area of ​​the compressor is A out , the compression force of the motor is F.

[0066] where W is given by:

[0067]

[0068]

[0069]

[0070]

[0071]

[0072]

[0073]

[0074]

[0075]

[0076]

[0077]

[0078]

[0079] The superscript · represents the converted variable, ε represents the pressure ratio, η represents the adiabatic compression efficiency, G represents the converted mass flow rate, N represents the converted speed, c1, c2, c3, c4 are intermediate parameters, where c4 is 0.8, q and m are 1.8. All calculation formulas are as above, and the information acquisition of the compression system is completed.

[0080] Model the compressor-motor coupling:

[0081] After obtaining all the information of the compression system, build a compressor-motor coupling model in Simulink. Select the gas density ρ inside the compressor and the outlet gas velocity c out , outlet gas temperature T out As the state variable of the compressor, use the integral module in simulink and other operation symbols to build a compressor system. The specific method is to integrate the first-order differential of the state variable (that is, use the integration module ) to obtain the state variables, and then obtain the constraint relationship from the mass conservation formula, momentum conservation formula and energy conservation formula. The specific formula is as follows:

[0082]

[0083]

[0084]

[0085] The meaning of each quantity has been given in the first step of obtaining compression system information, and will not be repeated here.

[0086] The schematic diagram of the compressor-motor coupling model is as follows Figure 3 As shown. For the motor model, the current speed n is obtained from the compressor module, and a PID module is used for control to output the current work W. At this point, the connection between the compressor and the motor is completed.

[0087] Modeling of anti-surge valve and construction of surge domain:

[0088] The mechanism of surge is quite complex and it is difficult to accurately model it. Semi-empirical models are usually used for analysis in engineering. The following is a semi-empirical formula for the surge instability point derived based on stability analysis:

[0089]

[0090] where Φ sg and Φ ck are the surge and choke volume flow coefficients, respectively, which are proportional to the volume flow and inversely proportional to the square of the impeller diameter and the speed; M is the turbine Mach number; R L and R H are the ratios of the surge and choke volume flow coefficients at the minimum and maximum speeds, respectively; the empirical parameters (1.25, 4.75, 0.225, 0.835) are taken as (1.25, 4.75, 0.225, 0.835). According to the above formula, a surge line of mass flow and input power is constructed. The operating conditions within the surge line are regarded as stable conditions, and the conditions outside the surge line are regarded as unstable conditions where surge occurs. It is necessary to avoid letting the compressor operate in unstable conditions.

[0091] Startup process parameter settings:

[0092] Start simulating the model. At this point, it is necessary to give initial values ​​to the state variables. Here, the initial values ​​of the key dynamic parameters of the compressor are given, that is, the density, speed and temperature are set to 1.184kg / m 3 , 0m / s and 298.15K. These parameters can be set in the integration module in simulink. Open the integration module Set the above initial values ​​and confirm. This completes the startup process parameter setting.

[0093] Compressor startup method based on anti-surge valve opening and closing strategy:

[0094] After completing all the above operations, perform the integrated operation. Note that a stable constant γ needs to be given at this time. Its working principle is as follows: when the compressor starts, the anti-surge valve is closed. When the distance x from the compressor operating status point to the surge line is greater than the stable constant γ, it is considered that the compressor is operating safely and will continue to operate safely for a period of time, so the anti-surge valve is always closed; when the distance x from the compressor operating status point to the surge line is less than the stable constant γ, it is considered that the compressor is operating safely but there is a surge risk for a period of time. At this time, the anti-surge valve is opened for one minute, and the judgment continues after one minute, and the opening and closing strategy of the anti-surge valve is updated until the rated operating state is reached. Among them, the distance x from the surge line in the compressor operating status point is defined as follows:

[0095] x=min{||line surge -dot currentstate ||}

[0096] The method to determine the stability constant γ is as follows: First, refer to the technical data and instruction manual provided by the compressor manufacturer to understand the safe operation requirements and recommended parameter settings of the compressor. By analyzing the operating history and surge records of the compressor, experiments and tests are carried out to adjust and verify the accuracy of the stability constant through actual operating data. During the experiment, different stability constants can be tried to observe the operating status and safety of the compressor to find the best setting. Consider safety and reliability requirements and combine actual conditions to determine a reasonable stability constant. During operation, regularly evaluate and adjust the stability constant to ensure safe and stable operation of the compressor.

[0097] The present invention takes into account the impact of surge on the compressor, and has high safety and reliability. Based on reasonable assumptions, the precise model is simplified, which reduces the calculation time and complexity, and has high calculation efficiency and high accuracy. A compressed air energy storage compressor starting method based on the anti-surge valve opening and closing strategy is proposed, which increases the flexibility of the anti-surge valve action, effectively avoids surge, and can improve the operating efficiency of the compressed air energy storage system.

[0098] like Figure 4 As shown, a compressed air energy storage compressor starting device includes: a parameter acquisition unit 401, a model building unit 402, a surge line determination unit 403, a state variable initial setting unit 404 and a starting unit 405;

[0099] A parameter acquisition unit 401 is used to obtain compressor design parameters and motor design parameters of a compression system;

[0100] A model building unit 402 is used to build a compressor-motor coupling model in Simulink according to the compressor design parameters and the motor design parameters;

[0101] A surge line determination unit 403 is used to construct a surge line of mass flow and input power based on the compressor-motor coupling model, wherein the operating conditions within the surge line are regarded as stable conditions, and the operating conditions outside the surge line are regarded as unstable conditions where surge occurs;

[0102] A state variable initial setting unit 404, used to set initial values ​​for state variables of the compressor-motor coupling model;

[0103] The starting unit 405 is used to adjust the opening and closing of the anti-surge valve according to the comparison between the distance x between the compressor operation state point and the surge line obtained by the compressor-motor coupling model simulation and the stability constant γ until the compressor is fully started.

[0104] like Figure 5As shown, the present disclosure provides an electronic device, including a processor 501, a communication interface 502, a memory 503 and a communication bus 504, wherein the processor 501, the communication interface 502 and the memory 503 communicate with each other through the communication bus 504;

[0105] Memory 503, storing computer programs;

[0106] The processor 501 is configured to implement the above method when executing the computer program stored in the memory 503 .

[0107] The present disclosure provides a computer-readable storage medium storing a computer program, wherein the computer program implements the above method when executed by a processor.

[0108] The computer-readable storage medium may be included in the device / apparatus described in the above embodiment; or it may exist independently without being assembled into the device / apparatus. The above computer-readable storage medium carries one or more programs, and when the above one or more programs are executed, the method according to the embodiment of the present disclosure is implemented.

[0109] According to an embodiment of the present disclosure, a computer-readable storage medium may be a non-volatile computer-readable storage medium, for example, may include but is not limited to: a portable computer disk, a hard disk, a random access memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), a portable compact disk read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination thereof. In the present disclosure, a computer-readable storage medium may be any tangible medium containing or storing a program that may be used by or in conjunction with an instruction execution system, apparatus, or device.

[0110] Although the present disclosure has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present disclosure.

Claims

1. A method for starting a compressed air energy storage compressor, characterized in that: The method comprises: Obtain compressor design parameters and motor design parameters of the compression system; According to the compressor design parameters and motor design parameters, build the compressor-motor coupling model in Simulink; Based on the compressor-motor coupling model, a surge line of mass flow and input power is constructed. The operating conditions within the surge line are regarded as stable conditions, and the conditions outside the surge line are regarded as unstable conditions where surge occurs. Setting initial values ​​for state variables of the compressor-motor coupling model; According to the comparison between the distance x between the compressor operating state point and the surge line obtained by the simulation of the compressor-motor coupling model and the stability constant γ, the opening and closing of the anti-surge valve are adjusted until the compressor is fully started.

2. A method for starting a compressed air energy storage compressor according to claim 1, characterized in that: Obtain the compressor design parameters and motor design parameters of the compression system, including: The rated mass flow rate of the compressor is q m,0 , the rated speed of the compressor is n0, the rated pressure ratio of the compressor is ε0, the adiabatic efficiency of the compressor is η0, the volume of the compressor is V, and the inlet cross-sectional area of ​​the compressor is A in , the outlet cross-sectional area of ​​the compressor is A out , the compression force of the motor is F, the gas density inside the compressor is ρ, and the velocity of the outlet gas is c out , outlet gas temperature T out as a state variable.

3. A method for starting a compressed air energy storage compressor according to claim 1, characterized in that: According to the compressor design parameters and motor design parameters, a compressor-motor coupling model is built in Simulink, including: Select the gas density ρ inside the compressor and the outlet gas velocity c out , outlet gas temperature T out As the state variable of the compressor, the integral module in simulink is used Build the compressor system.

4. A method for starting a compressed air energy storage compressor according to claim 1, characterized in that: Based on the compressor-motor coupling model, a surge line of mass flow and input power is constructed, including: The surge line of mass flow and input power is constructed based on the semi-empirical formula of surge instability point derived from stability analysis. The formula is as follows: where Φ sg and Φ ck are the surge and choke volume flow coefficients, respectively, which are proportional to the volume flow and inversely proportional to the square of the impeller diameter and the speed; M is the turbine Mach number; R L and R H are the ratios of surge and choke volume flow coefficients at the minimum and maximum speeds, respectively; the empirical parameter (B s ,C s ,R L ,R H ) takes values ​​of (1.25, 4.75, 0.225, 0.835); the operating conditions within the surge line are regarded as stable conditions, and the conditions outside the surge line are regarded as unstable conditions where surge occurs, to avoid letting the compressor operate in unstable conditions.

5. A method for starting a compressed air energy storage compressor according to claim 1, characterized in that: Set initial values ​​for the state variables of the compressor-motor coupling model, including: Set the initial values ​​of the key dynamic parameters of the compressor, that is, the density, speed and temperature are set to 1.184kg / m 3 , 0m / s and 298.15K; Set in the integration module in simulink, open the integration module Set the initial value and confirm.

6. A method for starting a compressed air energy storage compressor according to claim 1, characterized in that: The distance x of the surge line in the compressor operating state point is defined as follows: x=min{||line surge -dot currentstate ||} x represents the distance from the operating state point to the surge line, line_{surge} represents the surge line, dot_{currentstate} represents the current operating point, and min{||||} represents the minimum distance from the point to the line.

7. A method for starting a compressed air energy storage compressor according to claim 1, characterized in that: The stability constant γ is determined as follows: Obtain safe operation requirements and recommended parameter settings for the compressor based on the technical data and instruction manuals provided by the compressor manufacturer; By analyzing the compressor's operating history and surge records, conducting experiments and tests, the stability constant γ is determined; When the compressor starts to start, the anti-surge valve is closed. When the distance x between the compressor operating state point and the surge line is greater than the stable constant γ, the anti-surge valve remains closed. When the distance x between the compressor operating state point and the surge line is less than the stable constant γ, the anti-surge valve is opened for a period of time T. After time T, comparisons are continued until the compressor reaches the rated operating state.

8. A compressed air energy storage compressor starting device, characterized in that: include: Parameter acquisition unit, model building unit, surge line determination unit, state variable initial setting unit and startup unit; A parameter acquisition unit, used to obtain compressor design parameters and motor design parameters of a compression system; A model building unit is used to build a compressor-motor coupling model in Simulink according to the compressor design parameters and the motor design parameters; A surge line determination unit is used to construct a surge line of mass flow and input power based on a compressor-motor coupling model, wherein the operating conditions within the surge line are regarded as stable conditions, and the operating conditions outside the surge line are regarded as unstable conditions where surge occurs; A state variable initial setting unit, used for setting initial values ​​of state variables of the compressor-motor coupling model; According to the comparison between the distance x between the compressor operating state point and the surge line obtained by the simulation of the compressor-motor coupling model and the stability constant γ, the opening and closing of the anti-surge valve are adjusted until the compressor is fully started.

9. An electronic device, characterized in that: It includes a processor, a communication interface, a memory and a communication bus, wherein the processor, the communication interface and the memory communicate with each other via the communication bus; a memory storing a computer program; The processor is used to implement a method for starting a compressed air energy storage compressor as described in any one of claims 1 to 7 when executing a computer program stored in a memory.

10. A computer-readable storage medium storing a computer program, characterized in that: When the computer program is executed by a processor, a method for starting a compressed air energy storage compressor according to any one of claims 1 to 7 is implemented.

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