A compressor control method, device, equipment and storage medium based on compressed air energy storage

Abstract

Embodiments of the present application disclose a compressor control method and device based on compressed air energy storage, equipment and storage medium. Compressor working data is obtained, wherein the working data includes flow-related parameters, adjustment-related parameters and anti-surge valve opening; the compressor flow and the compressor backflow are determined based on the working data; the equivalent flow of the compressor is determined according to the compressor flow and the compressor backflow; the control parameter value is determined based on the equivalent flow of the compressor; the decoupling state of the compressor is determined based on the control parameter value and the working data; wherein the decoupling state includes the decoupling state of the compressor and the non-decoupling state of the compressor; and the compressor is controlled based on the decoupling state and the control parameter value. The compressor control method based on compressed air energy storage provided by the embodiments of the present application can improve the control accuracy by controlling the compressor based on the equivalent flow of the compressor.

Description

Technical Field

[0001] The present invention relates to the field of compressor control technology, and in particular to a compressor control method, device, equipment and storage medium based on compressed air energy storage. Background Technology

[0002] Compressed air energy storage (CASS) is an indirect, large-scale energy storage technology. During periods of low grid load, it stores electrical energy by compressing air with a compressor and transporting the compressed air to a storage tank. During periods of high grid load, the high-pressure gas in the storage tank is released, heated to a certain temperature, and then sent to a turbine expander to drive a generator to produce electricity. CASS has advantages such as high energy density, long lifespan, and low cost, and therefore has broad application prospects in power systems.

[0003] The compressor is the core equipment of a compressed air energy storage system, and its performance has a decisive impact on the overall system efficiency and energy storage economy. Unlike compressors in ordinary industry that typically operate near their design operating conditions, compressors in energy storage systems need to be able to operate at high loads and high efficiency over a wide range of flow rates and pressure ratios. Compressors used in compressed air energy storage systems are characterized by large flow rates and high pressures, and their arrangement is generally a series connection of multiple units.

[0004] Existing compressor control methods for compressed air energy storage include the following two types: one is to use compressor pressure as the performance control variable, which may cause the compressor to fail to fill the air storage tank within a specified time, affecting the operating efficiency of the compressed air energy storage power station; the other is to use the actual flow rate of the compressor as the performance control variable, but when the anti-surge valve opens, causing the compressor to generate backflow or venting, this method cannot represent the actual amount of air injected by the compressor into the next compressor unit or air storage tank. Summary of the Invention

[0005] This invention provides a compressor control method, device, equipment, and storage medium based on compressed air energy storage, which controls the compressor based on the equivalent flow rate of the compressor, thereby improving control accuracy.

[0006] In a first aspect, embodiments of the present invention provide a compressor control method based on compressed air energy storage, comprising:

[0007] Acquire compressor operating data; wherein, the operating data includes flow-related parameters, regulation-related parameters, and anti-surge valve opening;

[0008] The compressor flow rate and compressor return flow rate are determined based on the aforementioned working data;

[0009] The equivalent flow rate of the compressor is determined based on the compressor flow rate and the compressor return flow rate.

[0010] The control parameter values ​​are determined based on the equivalent flow rate of the compressor.

[0011] The decoupling state of the compressor is determined based on the control parameter values ​​and the operating data; wherein, the decoupling state includes the compressor being in a decoupling state and the compressor being in a non-decoupling state;

[0012] The compressor is controlled based on the decoupling state and the control parameter values.

[0013] Secondly, embodiments of the present invention also provide a compressor control device based on compressed air energy storage, comprising:

[0014] The working data acquisition module is used to acquire the compressor's working data; wherein, the working data includes flow-related parameters, regulation-related parameters, and anti-surge valve opening degree;

[0015] A flow rate determination module is used to determine the compressor flow rate and compressor return flow rate based on the working data;

[0016] An equivalent flow rate determination module is used to determine the equivalent flow rate of the compressor based on the compressor flow rate and the compressor return flow rate;

[0017] A control parameter value determination module is used to determine control parameter values ​​based on the equivalent flow rate of the compressor.

[0018] A decoupling state determination module is used to determine the decoupling state of the compressor based on the control parameter values ​​and the operating data; wherein, the decoupling state includes the compressor being in a decoupling state and the compressor being in a non-decoupling state;

[0019] The compressor control module is used to control the compressor based on the decoupling state and the control parameter values.

[0020] Thirdly, embodiments of the present invention also provide an electronic device, the electronic device comprising:

[0021] At least one processor; and

[0022] A memory communicatively connected to the at least one processor; wherein,

[0023] The memory stores a computer program that can be executed by the at least one processor, which enables the at least one processor to perform the compressor control method based on compressed air energy storage as described in the embodiments of the present invention.

[0024] Fourthly, embodiments of the present invention also provide a computer-readable storage medium storing computer instructions, which are used to cause a processor to execute and implement the compressor control method based on compressed air energy storage described in the embodiments of the present invention.

[0025] This invention discloses a compressor control method, apparatus, device, and storage medium based on compressed air energy storage. The method involves acquiring compressor operating data, including flow-related parameters, regulation-related parameters, and anti-surge valve opening; determining the compressor flow rate and compressor return flow rate based on the operating data; determining the compressor equivalent flow rate based on the compressor flow rate and compressor return flow rate; determining control parameter values ​​based on the compressor equivalent flow rate; determining the compressor decoupling state based on the control parameter values ​​and operating data; wherein the decoupling state includes the compressor being in a decoupled state and the compressor being in a non-decoupled state; and controlling the compressor based on the decoupling state and control parameter values. The compressor control method based on compressed air energy storage provided by this invention, which controls the compressor based on its equivalent flow rate, can improve control accuracy. Attached Figure Description

[0026] Figure 1 This is a flowchart of a compressor control method based on compressed air energy storage according to Embodiment 1 of the present invention;

[0027] Figure 2 This is a schematic diagram of the structure of a compressor system according to Embodiment 1 of the present invention;

[0028] Figure 3 This is a schematic diagram illustrating the determination of compressor location information according to Embodiment 1 of the present invention;

[0029] Figure 4 This is an example diagram of a compressor system based on compressed air energy storage application in Embodiment 1 of the present invention;

[0030] Figure 5 This is a schematic diagram of a compressor control device based on compressed air energy storage according to Embodiment 2 of the present invention;

[0031] Figure 6 This is a schematic diagram of the structure of an electronic device according to Embodiment 3 of the present invention. Detailed Implementation

[0032] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, and not all of the structures.

[0033] Compressor performance control refers to adjusting or maintaining the compressor's operating point to meet the needs of process production based on the operating load of the process unit. The main performance control parameters of a compressor include flow rate and pressure. Performance adjustment methods include inlet throttling, outlet throttling, adjustable inlet guide vanes, adjustable stationary vanes, and adjustable speed. The compressor's minimum flow rate is limited by surge conditions, its maximum flow rate by blockage conditions, and its adjustable pressure ratio is limited by speed, guide vane, and stationary vane operation.

[0034] When the compressed air energy storage system is working in the energy storage state, the compressor needs to continuously deliver gas to the storage device. Since the volume of the storage device is generally fixed, the discharge pressure of the centrifugal compressor must increase as the internal pressure of the storage device increases. The compressor needs to operate under varying conditions continuously within a large pressure ratio range.

[0035] If compressor pressure is used as the performance control variable, it essentially changes compressor performance by setting the deviation between the compressor outlet pressure and the gas storage tank. This requires continuously increasing the compressor pressure setpoint during the gas storage process, increasing the workload for operators. Compressors typically operate during periods of low grid load. Designing the gas storage tank volume and specifying the compressor's injection time necessitates that the compressor operate at its rated design flow rate. If compressor pressure is used as the performance control variable, the injection flow rate becomes uncontrollable, potentially causing the compressor to fail to fill the gas storage tank within the specified time, thus impacting the operational efficiency of compressed air energy storage.

[0036] If the actual flow rate of the compressor is used as the performance control variable, when the compressor is under load or low load operation, the anti-surge valve opens, causing the compressor to generate backflow or venting. As long as the actual flow rate of the compressor meets the set value of the performance control variable, the compressor will no longer adjust. However, the performance control flow rate at this time is not the gas injection flow rate required by the compressor air energy storage system for the gas storage tank.

[0037] Example 1

[0038] Figure 1 This is a flowchart of a compressor control method based on compressed air energy storage provided in Embodiment 1 of the present invention. This embodiment is applicable to the control of compressors in compressed air energy storage scenarios. The method can be executed by a compressor control device based on compressed air energy storage. This device can be implemented in software and / or hardware, optionally through electronic devices, such as mobile terminals, PCs, or servers. Specifically, it includes the following steps:

[0039] S110: Obtain compressor operating data.

[0040] The operating data includes flow-related parameters, regulation-related parameters, and anti-surge valve opening. Flow-related parameters include compressor inlet temperature, outlet temperature, inlet pressure, outlet pressure, and flow meter differential pressure. Regulation-related parameters include any one of the following: speed, variable inlet guide vane angle, or variable stationary vane angle. In this embodiment, when the compressor's speed control mode is speed, the regulation-related parameter is speed; when the compressor's speed control mode is variable inlet guide vane, the regulation-related parameter is the variable inlet guide vane angle parameter; and when the compressor's speed control mode is variable stationary vane angle, the regulation-related parameter is the variable stationary vane angle parameter.

[0041] For example, Figure 2 This is a schematic diagram of the structure of a compressor system according to an embodiment of the present invention, such as... Figure 2 As shown, the system includes: a cooler, a drive unit, a compressor, a flow meter, an anti-surge valve, and a shut-off valve. The substance flows through the system according to the arrows in the diagram.

[0042] S120 determines the compressor flow rate and compressor return flow rate based on working data.

[0043] In this context, compressor flow rate can be understood as the flow rate of a substance (such as air or liquid) flowing in the forward direction, which can be characterized by mass flow rate or volumetric flow rate. Compressor return flow rate can be understood as the flow rate of a substance flowing in the reverse direction.

[0044] Specifically, the compressor flow rate can be determined based on working data in the following ways: either by determining the compressor flow rate W1 based on the inlet temperature, inlet pressure, and flow meter pressure difference; or by determining the compressor flow rate W1 based on the outlet temperature, outlet pressure, and flow meter pressure difference.

[0045] For example, assuming the compressor flow rate is represented by mass flow rate, the calculation formula can be expressed as: Wherein, d represents the inner diameter of the orifice plate under operating conditions; D represents the inner diameter of the upstream and downstream pipes under operating conditions; ΔP represents the pressure difference of the orifice plate; and ρ represents the fluid density under operating conditions (which can be calculated from the inlet and outlet temperatures and pressures).

[0046] Specifically, the method for determining the compressor return flow rate based on working data can be as follows: determine the flow ratio of the anti-surge valve based on the anti-surge valve opening and the set valve flow characteristics; determine the flow characteristic coefficient of the anti-surge valve based on the pressure ratio; and determine the compressor return flow rate based on the flow ratio, the flow characteristic coefficient, the outlet temperature, and the outlet pressure.

[0047] Wherein, the pressure ratio is the ratio between the outlet pressure and the inlet pressure. The flow ratio can be understood as the flow area of ​​the anti-surge valve. Setting the valve flow characteristics can characterize the relationship between the anti-surge valve opening and the flow ratio, which can be represented by the function F1(x1), where x1 represents the anti-surge valve opening. The flow characteristic coefficient of the anti-surge valve can be determined based on the pressure ratio by inputting the pressure ratio x2 into the function F2(x2) to obtain the flow characteristic coefficient of the anti-surge valve. Specifically, based on the flow ratio, the flow characteristic coefficient, the outlet temperature, and the outlet pressure, the compressor return flow can be calculated using the following formula: Among them, P d Indicating export pressure, T d Indicates the outlet temperature.

[0048] S130, determine the equivalent flow rate of the compressor based on the compressor flow rate and the compressor return flow rate.

[0049] Specifically, the equivalent compressor flow rate can be determined by subtracting the compressor return flow rate from the compressor flow rate to obtain the equivalent compressor flow rate. The formula can be expressed as: W in =W1-W2.

[0050] S140 determines the control parameter values ​​based on the compressor's equivalent flow rate.

[0051] The control parameter values ​​may include a first control parameter value for controlling and adjusting relevant parameters and a second control parameter value for controlling the opening degree of the anti-surge valve. The first control parameter value can be a value between 0 and 100, and the second control parameter value can be a value between -1 and 1.

[0052] Specifically, the method for determining control parameter values ​​based on the compressor's equivalent flow rate can be: obtaining a preset target flow rate; and determining control parameter values ​​based on the compressor's equivalent flow rate and the target flow rate.

[0053] The target flow rate can be understood as the expected value of the pre-set equivalent flow rate. Specifically, the method for determining the control parameter value based on the compressor equivalent flow rate and the target flow rate can be as follows: input the compressor equivalent flow rate and the target flow rate into the first PID control module for calculation to obtain the first control parameter value I1; input the compressor equivalent flow rate and the target flow rate into the second PID control module for calculation to obtain the second control parameter value I2.

[0054] Wherein, I1 ranges from 0 to 100, representing the adjustable range of the relevant parameters. When the compressor's speed control mode is speed, 0 represents the minimum adjustable speed value of the compressor, and 100 represents the maximum adjustable speed value of the compressor; when the compressor's speed control mode is variable inlet guide vane, 0 represents the minimum variable inlet guide vane angle of the compressor, and 100 represents the maximum variable inlet guide vane angle of the compressor; when the compressor's speed control mode is variable stationary vane angle, 0 represents the minimum variable stationary vane angle of the compressor, and 100 represents the maximum variable stationary vane angle of the compressor.

[0055] Among them, I2 ranges from -1 to 1 and is used to correct the opening degree of the anti-surge valve.

[0056] S150 determines the decoupling state of the compressor based on control parameter values ​​and operating data.

[0057] The decoupling state includes both the compressor being in a decoupling state and the compressor being in a non-decoupling state.

[0058] Optionally, the method for determining the decoupling state of the compressor based on control parameter values ​​and operating data can be: obtaining compressor position information; and determining the decoupling state of the compressor based on control parameter values, operating data, and compressor position information.

[0059] The compressor location information includes whether the compressor is in the decoupling zone or not. Figure 3 This is a schematic diagram illustrating the determination of compressor location information in an embodiment of the present invention. Specifically, the process of determining compressor location information can be as follows: First, based on the reduced mass flow rate m at the compressor's current operating point... c The compressor operating point K in the anti-surge control coordinate system is calculated using the following formula, based on the pressure ratio Rc. OP : Where f(Rc) is the flow point on the compressor surge limit line SLL corresponding to the current pressure ratio; when the compressor operating point is located on the surge line (SLL), K OP =1, when the compressor operating point is located to the left of the surge line (SLL), K OP <1, when the compressor operating point is located to the right of the surge line (SLL), K OP >1. Then, design the anti-surge control line SCL based on the surge limit line SLL, and calculate the position K of the anti-surge control line SCL in the anti-surge control coordinate system. SCL The calculation formula is: K SCL =K SLL +b1; where b1 is the offset margin of the anti-surge control line SCL relative to the surge limit line SLL in the anti-surge coordinate system. Then, the decoupling control line LDL is designed along the anti-surge control line SCL, and the position K of the decoupling control line LDL in the anti-surge control coordinate system is calculated. LDL The calculation formula is: KLDL =K SCL +b2, where b2 is the offset margin of the decoupling control line LDL relative to the anti-surge control line SCL in the anti-surge coordinate system. Finally, based on the position K of the decoupling control line LDL in the anti-surge control coordinate system... LDL The compressor's position information is determined by the position of the compressor's operating point in the anti-surge control coordinate system. Specifically, when K... OP >K SCL To determine if the compressor's operating point is in the non-decoupling region, when K... OP <K SCL Determine that the compressor's operating point is in the decoupling region.

[0060] In this embodiment, the method for determining the decoupling state of the compressor based on the control parameter value, working data, and compressor position information can be as follows: First, determine the load state of the compressor based on the second control parameter value; wherein, the load state includes an increased load state and a decreased load state; under the increased load state, determine the decoupling state of the compressor based on the compressor position information and the opening degree of the anti-surge valve; under the decreased load state, determine the decoupling state of the compressor based on the compressor position information and the adjustment of relevant parameters (speed, variable inlet guide vane angle, or variable stationary vane angle).

[0061] Specifically, when the second control parameter I2 is greater than 0, it indicates that the compressor is in a load-increasing state. At this time, if the compressor operating point is in the decoupling zone, the compressor is judged to be in a non-decoupling state; if the compressor operating point is in the non-decoupling zone and the anti-surge valve is not fully closed, the compressor is judged to be in a decoupling state; if the compressor operating point is in the non-decoupling zone and the anti-surge valve is fully closed, the compressor is judged to be in a non-decoupling state.

[0062] Specifically, when the second control parameter I2 is less than 0, it indicates that the compressor is in a reduced load state. At this time, if the compressor operating point is in the decoupling zone, the compressor is judged to be in a decoupling state; if the compressor operating point is in the non-decoupling zone and the compressor's adjustment-related parameters (speed, variable inlet guide vane angle, variable stationary vane angle) have not reached the minimum adjustable state, the compressor is judged to be in a non-decoupling state; if the compressor operating point is in the non-decoupling zone and the compressor's adjustment-related parameters (speed, variable inlet guide vane angle, variable stationary vane angle) have reached the minimum adjustable state, the compressor is judged to be in a decoupling state.

[0063] S160 controls the compressor based on the decoupling state and control parameter values.

[0064] In this embodiment, the method of controlling the compressor based on the decoupling state and control parameter values ​​can be as follows: if the decoupling state is that the compressor is in a decoupling state, then the opening degree of the anti-surge valve is controlled based on the control parameter values; if the decoupling state is that the compressor is in a non-decoupling state, then the relevant parameters are adjusted based on the control parameter values.

[0065] Specifically, if the compressor is in a decoupled state, the relevant parameters remain unchanged, and the anti-surge valve opening is controlled based on the second control parameter value. If the compressor is in a non-decoupled state, the anti-surge valve opening remains unchanged, and the relevant parameters are controlled based on the first control parameter value.

[0066] Specifically, the method of controlling and adjusting relevant parameters based on the first control parameter value can be as follows: input the first control parameter, the maximum adjustable parameter related to compressor adjustment, and the minimum adjustable parameter related to compressor adjustment into a preset first calculation function to obtain a first final command value, and then control and adjust the relevant parameters based on the first final command value. The method of controlling the anti-surge valve opening based on the second control parameter value can be as follows: input the second control parameter value into a preset second calculation function to obtain a second final command value, and then control the anti-surge valve opening based on the second final command value.

[0067] Based on the above embodiments, Figure 4 This is an example diagram of a compressor system based on compressed air energy storage application in this embodiment, as shown below. Figure 4 As shown, the system includes three compressor units connected in series: Unit 1, Unit 2, and Unit 3. Unit 1 is an axial compressor with variable stator vane speed control; Unit 2 is a centrifugal compressor with variable inlet guide vane speed control; and Unit 3 is a centrifugal compressor with rotary speed control. All three compressor units are driven by electric motors, and each compressor outlet is equipped with a flow meter. Compressed air is gradually pressurized before being injected into the air storage tank.

[0068] For Unit 1, the collected operating data includes: inlet temperature, outlet temperature, inlet pressure, outlet pressure, flow meter differential pressure, and variable stator angle. The anti-surge valve opening or variable stator angle in Unit 1 is controlled using the collected operating data in accordance with the method described in the above embodiment; the specific process will not be elaborated here.

[0069] For Unit 2, the collected operating data includes: inlet temperature, outlet temperature, inlet pressure, outlet pressure, flow meter differential pressure, and variable inlet guide vane angle. The anti-surge valve opening or variable inlet guide vane angle in Unit 1 is controlled using the collected operating data in accordance with the method described in the above embodiment; the specific process will not be elaborated here.

[0070] For unit 3, the collected operating data includes: inlet temperature, outlet temperature, inlet pressure, outlet pressure, flow meter differential pressure, and rotational speed. The collected operating data is used to control the opening degree or rotational speed of the anti-surge valve in unit 1 according to the method described in the above embodiment; the specific process will not be elaborated here.

[0071] The technical solution of this embodiment involves acquiring compressor operating data, including flow-related parameters, regulation-related parameters, and anti-surge valve opening. Based on the operating data, the compressor flow rate and compressor return flow rate are determined. The equivalent compressor flow rate is determined based on the compressor flow rate and compressor return flow rate. Control parameter values ​​are determined based on the equivalent compressor flow rate. The decoupling state of the compressor is determined based on the control parameter values ​​and the operating data. The decoupling state includes both a decoupled state and a non-decoupled state. The compressor is then controlled based on the decoupling state and the control parameter values. The compressor control method based on compressed air energy storage provided by this embodiment of the invention controls the compressor based on its equivalent flow rate, which can improve control accuracy.

[0072] Example 2

[0073] Figure 5 This is a schematic diagram of a compressor control device based on compressed air energy storage provided in Embodiment 2 of the present invention, as shown below. Figure 5 As shown, the device includes:

[0074] The working data acquisition module 510 is used to acquire the working data of the compressor; the working data includes flow-related parameters, regulation-related parameters, and anti-surge valve opening.

[0075] The flow determination module 520 is used to determine the compressor flow rate and compressor return flow rate based on working data.

[0076] The equivalent flow determination module 530 is used to determine the equivalent flow of the compressor based on the compressor flow rate and the compressor return flow rate.

[0077] The control parameter value determination module 540 is used to determine the control parameter value based on the compressor's equivalent flow rate.

[0078] The decoupling state determination module 550 is used to determine the decoupling state of the compressor based on control parameter values ​​and operating data; wherein, the decoupling state includes the compressor being in a decoupling state and the compressor being in a non-decoupling state;

[0079] The compressor control module 560 is used to control the compressor based on the decoupling state and control parameter values.

[0080] Optional flow-related parameters include compressor inlet temperature, outlet temperature, inlet pressure, outlet pressure, and flow meter differential pressure; adjustable parameters include any one of the following: speed, variable inlet guide vane angle, or variable stationary vane angle.

[0081] Optionally, the flow determination module 520 is also used for:

[0082] The compressor flow rate is determined based on the inlet temperature, inlet pressure, and flow meter pressure difference; or...

[0083] The compressor flow rate is determined based on the outlet temperature, outlet pressure, and flow meter pressure difference.

[0084] Optionally, the flow determination module 520 is also used for:

[0085] The flow ratio of the anti-surge valve is determined based on the anti-surge valve opening degree and the set valve flow characteristics;

[0086] The flow characteristic coefficient of the anti-surge valve is determined based on the pressure ratio; where the pressure ratio is the ratio between the outlet pressure and the inlet pressure.

[0087] Determine the compressor return flow rate based on the flow ratio, flow characteristic coefficient, outlet temperature, and outlet pressure.

[0088] Optionally, the control parameter value determination module 540 is also used for:

[0089] Get the preset target traffic;

[0090] The control parameter values ​​are determined based on the compressor's equivalent flow rate and the target flow rate.

[0091] Optionally, the decoupling state determination module 550 is also used for:

[0092] Obtain compressor location information; wherein, compressor location information includes whether the compressor is in the decoupling region or not.

[0093] The decoupling state of the compressor is determined based on the control parameter values, operating data, and compressor location information.

[0094] Optionally, the compressor control module 560 is also used for:

[0095] If the compressor is in a decoupled state, the opening degree of the anti-surge valve is controlled based on the control parameter values.

[0096] If the decoupling state is that the compressor is in a non-decoupling state, then the relevant parameters are adjusted based on the control parameter values.

[0097] The above-described apparatus can execute the methods provided in all the foregoing embodiments of the present invention, and has the corresponding functional modules and beneficial effects for executing the above methods. Technical details not described in detail in this embodiment can be found in the methods provided in all the foregoing embodiments of the present invention.

[0098] Example 3

[0099] Figure 6A schematic diagram of an electronic device 10 that can be used to implement embodiments of the present invention is shown. The electronic device is intended to represent various forms of digital computers, such as laptop computers, desktop computers, workstations, personal digital assistants, servers, blade servers, mainframe computers, and other suitable computers. The electronic device can also represent various forms of mobile devices, such as personal digital processors, cellular phones, smartphones, wearable devices (e.g., helmets, glasses, watches, etc.), and other similar computing devices. The components shown herein, their connections and relationships, and their functions are merely illustrative and are not intended to limit the implementation of the invention described and / or claimed herein.

[0100] like Figure 6 As shown, the electronic device 10 includes at least one processor 11 and a memory, such as a read-only memory (ROM) 12 or a random access memory (RAM) 13, communicatively connected to the at least one processor 11. The memory stores computer programs executable by the at least one processor. The processor 11 can perform various appropriate actions and processes based on the computer program stored in the ROM 12 or loaded from storage unit 18 into the RAM 13. The RAM 13 may also store various programs and data required for the operation of the electronic device 10. The processor 11, ROM 12, and RAM 13 are interconnected via a bus 14. An input / output (I / O) interface 15 is also connected to the bus 14.

[0101] Multiple components in electronic device 10 are connected to I / O interface 15, including: input unit 16, such as keyboard, mouse, etc.; output unit 17, such as various types of displays, speakers, etc.; storage unit 18, such as disk, optical disk, etc.; and communication unit 19, such as network card, modem, wireless transceiver, etc. Communication unit 19 allows electronic device 10 to exchange information / data with other devices through computer networks such as the Internet and / or various telecommunications networks.

[0102] Processor 11 can be a variety of general-purpose and / or special-purpose processing components with processing and computing capabilities. Some examples of processor 11 include, but are not limited to, a central processing unit (CPU), a graphics processing unit (GPU), various special-purpose artificial intelligence (AI) computing chips, various processors running machine learning model algorithms, a digital signal processor (DSP), and any suitable processor, controller, microcontroller, etc. Processor 11 performs the various methods and processes described above, such as a compressor control method based on compressed air energy storage.

[0103] In some embodiments, the compressed air energy storage-based compressor control method may be implemented as a computer program tangibly contained in a computer-readable storage medium, such as storage unit 18. In some embodiments, part or all of the computer program may be loaded and / or installed on electronic device 10 via ROM 12 and / or communication unit 19. When the computer program is loaded into RAM 13 and executed by processor 11, one or more steps of the compressed air energy storage-based compressor control method described above may be performed. Alternatively, in other embodiments, processor 11 may be configured to perform the compressed air energy storage-based compressor control method by any other suitable means (e.g., by means of firmware).

[0104] Various embodiments of the systems and techniques described above herein can be implemented in digital electronic circuit systems, integrated circuit systems, field-programmable gate arrays (FPGAs), application-specific integrated circuits (ASICs), application-specific standard products (ASSPs), systems-on-a-chip (SoCs), payload-programmable logic devices (CPLDs), computer hardware, firmware, software, and / or combinations thereof. These various embodiments may include implementations in one or more computer programs that can be executed and / or interpreted on a programmable system including at least one programmable processor, which may be a dedicated or general-purpose programmable processor, capable of receiving data and instructions from a storage system, at least one input device, and at least one output device, and transmitting data and instructions to the storage system, the at least one input device, and the at least one output device.

[0105] Computer programs used to implement the methods of the present invention may be written in any combination of one or more programming languages. These computer programs may be provided to a processor of a general-purpose computer, a special-purpose computer, or other programmable data processing device, such that when executed by the processor, the computer programs cause the functions / operations specified in the flowcharts and / or block diagrams to be performed. The computer programs may be executed entirely on a machine, partially on a machine, or as a standalone software package, partially on a machine and partially on a remote machine, or entirely on a remote machine or server.

[0106] In the context of this invention, a computer-readable storage medium can be a tangible medium that may contain or store a computer program for use by or in conjunction with an instruction execution system, apparatus, or device. A computer-readable storage medium may include, but is not limited to, electronic, magnetic, optical, electromagnetic, infrared, or semiconductor systems, apparatus, or devices, or any suitable combination thereof. Alternatively, a computer-readable storage medium may be a machine-readable signal medium. More specific examples of machine-readable storage media include electrical connections based on one or more wires, portable computer disks, hard disks, random access memory (RAM), read-only memory (ROM), erasable programmable read-only memory (EPROM or flash memory), optical fibers, portable compact disk read-only memory (CD-ROM), optical storage devices, magnetic storage devices, or any suitable combination thereof.

[0107] To provide interaction with a user, the systems and techniques described herein can be implemented on an electronic device having: a display device for displaying information to the user (e.g., a CRT (cathode ray tube) or LCD (liquid crystal display) monitor); and a keyboard and pointing device (e.g., a mouse or trackball) through which the user provides input to the electronic device. Other types of devices can also be used to provide interaction with the user; for example, feedback provided to the user can be any form of sensory feedback (e.g., visual feedback, auditory feedback, or tactile feedback); and input from the user can be received in any form (including sound input, voice input, or tactile input).

[0108] The systems and technologies described herein can be implemented in computing systems that include backend components (e.g., as data servers), or computing systems that include middleware components (e.g., application servers), or computing systems that include frontend components (e.g., user computers with graphical user interfaces or web browsers through which users can interact with implementations of the systems and technologies described herein), or any combination of such backend, middleware, or frontend components. The components of the system can be interconnected via digital data communication of any form or medium (e.g., communication networks). Examples of communication networks include local area networks (LANs), wide area networks (WANs), blockchain networks, and the Internet.

[0109] A computing system can include clients and servers. Clients and servers are generally located far apart and typically interact through communication networks. The client-server relationship is created by computer programs running on the respective computers and having a client-server relationship with each other. The server can be a cloud server, also known as a cloud computing server or cloud host, which is a hosting product within the cloud computing service system to address the shortcomings of traditional physical hosts and VPS services, such as high management difficulty and weak business scalability.

[0110] It should be understood that the various forms of processes shown above can be used, with steps reordered, added, or deleted. For example, the steps described in this invention can be executed in parallel, sequentially, or in different orders, as long as the desired result of the technical solution of this invention can be achieved, and this is not limited herein.

[0111] The specific embodiments described above do not constitute a limitation on the scope of protection of this invention. Those skilled in the art should understand that various modifications, combinations, sub-combinations, and substitutions can be made according to design requirements and other factors. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this invention should be included within the scope of protection of this invention.

Claims

1. A method of controlling a compressor based on compressed air energy storage, characterized in that, The method comprises: acquiring working data of the compressor; wherein the working data comprises flow-related parameters, regulation-related parameters, and anti-surge valve opening degree; determining compressor flow and compressor backflow based on the working data; determining compressor equivalent flow according to the compressor flow and the compressor backflow; determining control parameter value based on the compressor equivalent flow; determining decoupling state of the compressor based on the control parameter value and the working data; wherein the decoupling state comprises that the compressor is in decoupling state and that the compressor is in non-decoupling state; controlling the compressor based on the decoupling state and the control parameter value; wherein determining decoupling state of the compressor based on the control parameter value and the working data comprises: acquiring compressor position information; wherein the compressor position information comprises that the compressor is in decoupling zone or that the compressor is not in decoupling zone; determining decoupling state of the compressor according to the control parameter value, the working data, and the compressor position information; wherein controlling the compressor based on the decoupling state and the control parameter value comprises: if the decoupling state is that the compressor is in decoupling state, controlling the anti-surge valve opening degree based on the control parameter value; if the decoupling state is that the compressor is in non-decoupling state, controlling the regulation-related parameters based on the control parameter value.

2. The method of claim 1, wherein, The flow-related parameters comprise inlet temperature, outlet temperature, inlet pressure, outlet pressure, and flowmeter differential pressure of the compressor; the regulation-related parameters comprise any one of the following: rotational speed, variable inlet guide vane angle, or variable stator vane angle.

3. The method of claim 2, wherein, Determining compressor flow based on the working data comprises: determining compressor flow according to the inlet temperature, the inlet pressure, and the flowmeter differential pressure; or determining compressor flow according to the outlet temperature, the outlet pressure, and the flowmeter differential pressure.

4. The method of claim 2, wherein, Determining compressor backflow based on the working data comprises: determining flow ratio of the anti-surge valve according to the anti-surge valve opening degree and set valve flow characteristic; determining flow characteristic coefficient of the anti-surge valve according to pressure ratio; wherein the pressure ratio is the ratio between the outlet pressure and the inlet pressure; determining compressor backflow according to the flow ratio, the flow characteristic coefficient, the outlet temperature, and the outlet pressure.

5. The method of claim 2, wherein, Determining control parameter value based on the compressor equivalent flow comprises: acquiring preset target flow; determining control parameter value based on the compressor equivalent flow and the target flow.

6. A compressor control device based on compressed air energy storage, characterized by, The compressor control method based on compressed air energy storage comprises: a working data acquisition module for acquiring working data of the compressor; wherein the working data comprises flow-related parameters, regulation-related parameters, and anti-surge valve opening degree; a flow determination module for determining compressor flow and compressor backflow based on the working data; an equivalent flow determination module for determining compressor equivalent flow according to the compressor flow and the compressor backflow; a control parameter value determination module for determining control parameter value based on the compressor equivalent flow; a decoupling state determination module for determining decoupling state of the compressor based on the control parameter value and the working data; wherein the decoupling state comprises that the compressor is in decoupling state and that the compressor is in non-decoupling state; a compressor control module for controlling the compressor based on the decoupling state and the control parameter value. A decoupling state determination module is configured to determine a decoupling state of the compressor based on the control parameter value and the working data; wherein the decoupling state includes that the compressor is in a decoupling state and that the compressor is in a non-decoupling state; A compressor control module is configured to control the compressor based on the decoupling state and the control parameter value.

7. An electronic device, comprising: The electronic device comprises: at least one processor; and a memory connected with the at least one processor in communication; wherein, the memory stores a computer program executable by the at least one processor, and the computer program is executed by the at least one processor to enable the at least one processor to execute the compressor control method based on compressed air energy storage according to any one of claims 1-5.

8. A computer-readable storage medium, characterized in that, The computer readable storage medium stores computer instructions, and the computer instructions are used to enable the processor to implement the compressor control method based on compressed air energy storage according to any one of claims 1-5 when executed.

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