Compressed air energy storage system and control method thereof

Abstract

The invention discloses a compressed air energy storage system and a control method thereof, and relates to the technical field of compressed air energy storage, the system comprises a control module, an information detection module, an adjusting module, a gas storage and a compressor module; the control module is used for collecting initial operation parameters of the compressed air energy storage system through the information detection module when the compressed air energy storage system operates, determining a to-be-adjusted module and target operation parameters of the compressed air energy storage system according to the initial operation parameters, and controlling the to-be-adjusted module to operate based on the target operation parameters; the initial operation parameters comprise the environment temperature of the compressed air energy storage system, the gas storage temperature of the gas storage and the gas storage pressure, the to-be-adjusted module comprises a compressor module and an adjusting module, and the target operation parameters are used for reducing the energy loss of the compressed air energy storage system. The operation parameters of the devices in the system can be adjusted according to the operation information of the energy storage system, so that the energy conversion efficiency of the system is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of compressed air energy storage, and in particular to a compressed air energy storage system and a control method thereof. Background Art

[0002] Compressed Air Energy Storage (CAES) is a storage technology that uses excess electricity during low load periods to compress and store air, and releases high-pressure air to generate electricity during peak load periods. It has the advantages of large storage capacity, long storage cycle, and low specific investment, and is considered to be one of the large-scale energy storage technologies with broad development prospects.

[0003] The compressed air energy storage system is an integration of the air compression system and air turbine power generation, which combines heat storage to achieve energy storage and conversion. The system includes multiple subsystems such as compression, turbine power generation, heat storage, heat exchange, and gas storage. When charging, the electric motor drives the compressor to compress the air and transmit the compressed air to the gas storage reservoir. The outlet of each compressor is equipped with an end cooler to transfer the heat energy of the high-temperature air to the heat storage medium and store it in the hot tank. The inlet of each compressor section is designed with a water cooler to reduce the temperature of the compressor inlet. When discharging, the high-pressure air released from the gas storage reservoir passes through the turbine inlet heater to transfer the heat in the heat storage medium to the air. The high-temperature and high-pressure air passes through the turbine and expands to do work.

[0004] However, when storing energy, both the fluid and mechanical equipment experience energy losses in the process of converting electrical energy into potential energy and thermal energy; when releasing energy, both the fluid and mechanical equipment experience energy losses in the process of converting potential energy and thermal energy into electrical energy, and the electric-electric conversion efficiency is low. Therefore, designing a compressed air energy storage system with less energy loss and high electric-electric conversion efficiency is a highly concerned issue in the new energy and power fields. Summary of the invention

[0005] The present invention provides a compressed air energy storage system and a control method thereof, which can adjust the operating parameters of each device in the system according to the operating information of the energy storage system, reduce the energy loss of both fluid and mechanical equipment during the charging and discharging process of the system, and improve the energy conversion efficiency of the system.

[0006] According to one aspect of the present invention, a compressed air energy storage system is provided, the system comprising: a control module, an information detection module, a regulating module, a gas storage reservoir and a compressor module, wherein the control module is respectively connected to the information detection module, the regulating module and the compressor module, the gas storage reservoir is respectively connected to the compressor module and the information detection module, and the gas storage reservoir is used to store gas energy;

[0007] The control module is used to collect the initial operating parameters of the compressed air energy storage system through the information detection module when the compressed air energy storage system is running, determine the modules to be adjusted and the target operating parameters of the compressed air energy storage system according to the initial operating parameters, and control the modules to be adjusted to operate based on the target operating parameters; wherein, when the compressed air energy storage system is running, the gas storage reservoir performs potential energy storage or potential energy release work, and potential energy storage can be understood as transmitting the air potential energy to the gas storage reservoir for storage, and potential energy release can be understood as transmitting the air potential energy stored in the gas storage reservoir to the external device for use. The initial operating parameters include the ambient temperature of the compressed air energy storage system, the gas storage temperature and the gas storage pressure of the gas storage reservoir, the modules to be adjusted include the compressor module and the regulating module, and the target operating parameters are used to reduce the energy loss of the compressed air energy storage system.

[0008] Optionally, the information detection module includes an ambient temperature detection unit, a gas reservoir pressure detection unit and a gas reservoir temperature detection unit; wherein the ambient temperature detection unit is deployed at the inlet end of the compressor module to determine the ambient temperature; the gas reservoir pressure detection unit is deployed at the gas energy inlet end or the gas energy outlet end of the gas storage reservoir to determine the gas reservoir pressure; the gas reservoir temperature detection unit is deployed at the gas energy inlet end or the gas energy outlet end of the gas storage reservoir to determine the gas reservoir temperature.

[0009] Optionally, the compressor module includes a first-stage compressor, a middle-stage compressor and a final-stage compressor, and the regulating module includes a first circulating water-cooled regulating valve, a second circulating water-cooled regulating valve and a third circulating water-cooled regulating valve; wherein, the first end of the first circulating water-cooled regulating valve is connected to the control module, the second end of the first circulating water-cooled regulating valve is connected to the energy storage auxiliary equipment, the first end of the second circulating water-cooled regulating valve is connected to the control module, the second end of the second circulating water-cooled regulating valve is connected to the energy storage auxiliary equipment, the first end of the third circulating water-cooled regulating valve is connected to the control module, and the second end of the third circulating water-cooled regulating valve is connected to the energy storage auxiliary equipment.

[0010] Optionally, the energy storage auxiliary equipment includes a cold tank, a hot filler, a first final cooler, a second final cooler, a first water cooler, a second water cooler, a third water cooler and a throttle valve; wherein the hot filler is respectively connected to the first end of the first final cooler and the first end of the second final cooler, the cold tank is respectively connected to the second end of the first final cooler and the second end of the second final cooler, the third end of the first final cooler is connected to the outlet end of the first-stage compressor, the inlet end of the first-stage compressor is respectively connected to the ambient temperature detection unit and the control module, the fourth end of the first final cooler is connected to the third end of the first water cooler, the first end of the first water cooler is connected to the second end of the first circulating water cooling regulating valve end, the second end of the first water cooler is connected to the inlet end of the middle section compressor, the third end of the second final cooler is connected to the outlet end of the middle section compressor, the fourth end of the second final cooler is connected to the third end of the second water cooler, the first end of the second water cooler is connected to the second end of the second circulating water cooling regulating valve, the second end of the second water cooler is connected to the inlet end of the final section compressor, the outlet end of the final section compressor is connected to the first end of the third water cooler, the second end of the third water cooler is connected to the second end of the third circulating water cooling regulating valve, and the third end of the third water cooler is connected to the air storage reservoir through a throttle valve, and the throttle valve is used to adjust the outlet pressure of the compressed air energy storage system.

[0011] Optionally, the control module includes a first controller and a second controller; wherein the first controller is respectively connected to the ambient temperature detection unit, the inlet end of the first-stage compressor, the inlet end of the middle-stage compressor, the inlet end of the final-stage compressor, the first circulating water cooling regulating valve and the gas reservoir pressure detection unit; the second controller is respectively connected to the second circulating water cooling regulating valve, the third circulating water cooling regulating valve, the gas reservoir pressure detection unit and the gas reservoir temperature detection unit.

[0012] Optionally, the first controller is specifically used to: determine the control parameters of the first-section compressor, the middle-section compressor, the final-section compressor and the first circulating water-cooling regulating valve based on the ambient temperature obtained by the ambient temperature detection unit and the gas reservoir pressure obtained by the gas reservoir pressure detection unit, and control the first-section compressor, the middle-section compressor, the final-section compressor and the first circulating water-cooling regulating valve to operate based on their respective control parameters; the second controller is specifically used to: determine the control parameters of the second circulating water-cooling regulating valve and the third circulating water-cooling regulating valve based on the gas reservoir temperature obtained by the gas reservoir temperature detection unit and the gas reservoir pressure obtained by the gas reservoir pressure detection unit, and control the second circulating water-cooling regulating valve and the third circulating water-cooling regulating valve to operate based on their respective control parameters.

[0013] According to another aspect of the present invention, a control method for a compressed air energy storage system is provided, which is applied to a control module of the compressed air energy storage system provided in any embodiment of the present invention, and the method comprises:

[0014] The information detection module is used to obtain the ambient temperature of the compressed air energy storage system, the gas storage temperature and the gas storage pressure of the gas storage reservoir;

[0015] Using a pre-set parameter processing rule, the ambient temperature, the gas reservoir temperature and the gas reservoir pressure are processed to obtain a first operating parameter of the regulating module and a second operating parameter of the compressor module;

[0016] The control and regulation module operates based on the first operating parameter, and the compressor module operates based on the second operating parameter, so as to reduce the energy loss of the compressed air energy storage system.

[0017] Optionally, the parameter processing rules include first-category parameter processing rules and second-category parameter processing rules, the first operating parameters include third operating parameters and fourth operating parameters, and the ambient temperature, gas reservoir temperature and gas reservoir pressure are processed using pre-set parameter processing rules to obtain the first operating parameters of the regulation module and the second operating parameters of the compressor module, including: facilitating the first-category parameter processing rules, processing the ambient temperature and gas reservoir pressure to obtain the second operating parameters and the third operating parameters; facilitating the second-category parameter processing rules, processing the gas reservoir temperature and gas reservoir pressure to obtain the fourth operating parameters.

[0018] Optionally, the first type of parameter processing rules include a first-stage compressor inlet guide vane opening value calculation rule, an intermediate-stage compressor inlet guide vane opening value calculation rule, a final-stage compressor speed value calculation rule and a first-circulation cooling water regulating valve opening value calculation rule; when the regulating module includes a first-circulation water-cooled regulating valve, and the compressor module includes a first-stage compressor, an intermediate-stage compressor and a final-stage compressor, the first type of parameter processing rules are used to process the ambient temperature and the gas reservoir pressure to obtain second and third operating parameters, including: using the first-stage compressor inlet guide vane opening value calculation rule to process the ambient temperature and the gas reservoir pressure to obtain the opening value coefficient of the first-stage compressor, and determining the inlet guide vane opening of the first-stage compressor according to the opening value coefficient and the opening design value of the first-stage compressor; using the intermediate According to the calculation rule of the inlet guide vane opening value of the first-stage compressor, the ambient temperature and the gas reservoir pressure are processed to obtain the opening value coefficient of the middle-stage compressor, and the inlet guide vane opening of the middle-stage compressor is determined according to the opening value coefficient and the opening design value of the middle-stage compressor; according to the calculation rule of the speed value of the last-stage compressor, the ambient temperature and the gas reservoir pressure are processed to obtain the speed value coefficient of the last-stage compressor, and the speed information of the last-stage compressor is determined according to the speed value coefficient and the speed design value of the last-stage compressor; according to the calculation rule of the opening value of the first circulating cooling water regulating valve, the ambient temperature and the gas reservoir pressure are processed to obtain the opening value coefficient of the first circulating cooling water regulating valve, and the opening information of the first circulating cooling water regulating valve is determined according to the opening value coefficient and the opening design value of the first circulating cooling water regulating valve.

[0019] Optionally, the second type of parameter processing rules include second circulating cooling water regulating valve opening value calculation rules and third circulating cooling water regulating valve opening value calculation rules. When the regulation module includes the second circulating water-cooled regulating valve and the third circulating water-cooled regulating valve, the second type of parameter processing rules are used to process the gas reservoir temperature and the gas reservoir pressure to obtain the fourth operating parameter, including: using the second circulating cooling water regulating valve opening value calculation rules to process the gas reservoir temperature and the gas reservoir pressure to obtain the opening value coefficient of the second circulating cooling water regulating valve, and determining the opening information of the second circulating cooling water regulating valve based on the opening value coefficient and the opening design value of the second circulating cooling water regulating valve; using the third circulating cooling water regulating valve opening value calculation rules to process the gas reservoir temperature and the gas reservoir pressure to obtain the opening value coefficient of the third circulating cooling water regulating valve, and determining the opening information of the third circulating cooling water regulating valve based on the opening value coefficient and the opening design value of the third circulating cooling water regulating valve.

[0020] According to another aspect of the present invention, a control device for a compressed air energy storage system is provided, which is used to implement the control method for a compressed air energy storage system in any embodiment of the present invention, and the device includes:

[0021] An acquisition module is used to obtain the ambient temperature of the compressed air energy storage system, the gas storage temperature and the gas storage pressure of the gas storage reservoir by using the information detection module;

[0022] A determination module, used to process the ambient temperature, the gas reservoir temperature and the gas reservoir pressure by using a preset parameter processing rule to obtain a first operating parameter of the adjustment module and a second operating parameter of the compressor module;

[0023] The control module is used to control the regulating module to operate based on the first operating parameter and the compressor module to operate based on the second operating parameter, so as to reduce the energy loss of the compressed air energy storage system.

[0024] According to another aspect of the present invention, there is provided an electronic device, the electronic device comprising:

[0025] at least one processor; and a memory communicatively coupled to the at least one processor;

[0026] The memory stores a computer program that can be executed by at least one processor, and the computer program is executed by at least one processor so that the at least one processor can execute the control method of the compressed air energy storage system in any embodiment of the present invention.

[0027] According to another aspect of the present invention, a computer-readable storage medium is provided, which stores computer instructions, and the computer instructions are used to implement the control method of the compressed air energy storage system in any embodiment of the present invention when executed by a processor.

[0028] According to another aspect of the present invention, a computer program product is provided. The computer program product includes a computer program. When the computer program is executed by a processor, the control method of the compressed air energy storage system of any embodiment of the present invention is implemented.

[0029] The compressed air energy storage system of the present invention comprises: a control module, an information detection module, an adjustment module, an air storage reservoir and a compressor module, wherein the control module is respectively connected to the information detection module, the adjustment module and the compressor module, the air storage reservoir is respectively connected to the compressor module and the information detection module, and the air storage reservoir is used to store gas energy; the control module is used to collect the initial operating parameters of the compressed air energy storage system through the information detection module when the compressed air energy storage system is running, determine the module to be adjusted and the target operating parameters of the compressed air energy storage system according to the initial operating parameters, and control the module to be adjusted to operate based on the target operating parameters; wherein, when the compressed air energy storage system is running, the air storage reservoir performs potential energy storage work or potential energy release work, the initial operating parameters include the ambient temperature of the compressed air energy storage system, the air storage temperature and the air storage pressure of the air storage reservoir, the module to be adjusted includes the compressor module and the adjustment module, and the target operating parameters are used to reduce the energy loss of the compressed air energy storage system. During operation, the compressed air energy storage system provided by the present invention will regularly obtain the operating information of the energy storage system, process it, and parse out the equipment and its operating parameters that need to be adjusted in the system, thereby ensuring the real-time performance of the equipment operating parameters, thereby reducing the energy loss of both fluid and mechanical equipment during the charging and discharging process of the system and improving the energy conversion efficiency of the system.

[0030] It should be understood that the contents described in this section are not intended to identify the key or important features of the embodiments of the present invention, nor are they intended to limit the scope of the present invention. Other features of the present invention will become easily understood through the following description. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] In order to more clearly illustrate the technical solutions in the present invention, the accompanying drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying creative work.

[0032] Figure 1 It is a structural schematic diagram of a compressed air energy storage system provided by the present invention;

[0033] Figure 2 is a structural schematic diagram of another compressed air energy storage system provided by the present invention;

[0034] Figure 3 It is a flow chart of a control method of a compressed air energy storage system provided by the present invention;

[0035] Figure 4 It is a structural schematic diagram of a control device for a compressed air energy storage system provided by the present invention;

[0036] Figure 5 It is a structural schematic diagram of an electronic device provided by the present invention.

[0037] Reference numerals:

[0038] 101-control module, 102-information detection module, 103-regulation module, 104-gas storage, 105-compressor module, 1-ambient temperature detection unit, 2-gas storage pressure detection unit, 3-gas storage temperature detection unit, 4-first section compressor, 5-middle section compressor, 6-final section compressor, 7-first circulation water cooling regulating valve, 8-second circulation water cooling regulating valve, 9-third circulation water cooling regulating valve, 10-first water cooler, 11-second water cooler, 12-third water cooler, 13-first final cooler, 14-second final cooler, 15-hot filling, 16-cold tank, 17-gas storage, 18-throttle valve, 19-first processor, 20-second processor. DETAILED DESCRIPTION

[0039] In order to enable those skilled in the art to better understand the solution of the present invention, the technical solution of the present invention will be clearly and completely described below in conjunction with the drawings of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present invention.

[0040] It should be noted that the terms "first", "second", etc. in the specification and claims of the present invention and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchanged where appropriate, so that the embodiments of the present invention described herein can be implemented in an order other than those illustrated or described herein. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device that includes a series of steps or units is not necessarily limited to those steps or units that are clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0041] Figure 1 This is a schematic diagram of the structure of a compressed air energy storage system provided by the present invention. This embodiment can be applied to improving the energy conversion efficiency of the compressed air energy storage system, improving the system operation electric-electric conversion efficiency, etc. Figure 1The system specifically includes: a control module, an information detection module, an adjustment module, an air storage reservoir and a compressor module, wherein the control module is respectively connected to the information detection module, the adjustment module and the compressor module, the air storage reservoir is respectively connected to the compressor module and the information detection module, and the air storage reservoir is used to store gas energy; the control module is used to collect the initial operating parameters of the compressed air energy storage system through the information detection module when the compressed air energy storage system is running, determine the module to be adjusted and the target operating parameters of the compressed air energy storage system according to the initial operating parameters, and control the module to be adjusted to operate based on the target operating parameters; wherein, when the compressed air energy storage system is running, the air storage reservoir performs potential energy storage work or potential energy release work, the initial operating parameters include the ambient temperature of the compressed air energy storage system, the gas storage temperature and the gas storage pressure of the air storage reservoir, the module to be adjusted includes the compressor module and the adjustment module, and the target operating parameters are used to reduce the energy loss of the compressed air energy storage system.

[0042] Among them, gas energy can be understood as air potential energy, control module can be understood as a computing unit with data processing capabilities, including but not limited to microprocessors, single-chip microcomputers and programmable logic controllers, and information detection modules can be understood as components pre-deployed in the compressed air energy storage system for determining the operating parameters of the system during operation, including but not limited to temperature sensors, humidity sensors and pressure sensors. The regulating module can be understood as a device for regulating the state of components such as the control valve of the compressed air energy storage system, and the compressor module can be understood as a device for performing gas energy compression in the compressed air energy storage system. When the regulating module and the compressor module are operated based on different parameters, the working state and mode of the compressed air energy storage system are different. By adjusting the operating parameters of the compressor module and the regulating module, on the one hand, the operating parameters of the compressed air energy storage system can be matched with the ambient temperature and gas reservoir pressure to improve energy efficiency; on the other hand, the operating parameters of the compressed air energy storage system can be matched with the gas reservoir temperature and gas reservoir pressure to improve the safety of the gas storage reservoir.

[0043] Figure 2 is a structural schematic diagram of another compressed air energy storage system provided by the present invention, Figure 2 Taking three-stage compression and two-stage expansion as an example, the connection relationship of each component is shown in detail. Specifically, the information detection module includes an ambient temperature detection unit, a gas reservoir pressure detection unit and a gas reservoir temperature detection unit. The compressor module includes a first-stage compressor, a middle-stage compressor and a final-stage compressor, and the regulating module includes a first circulating water-cooled regulating valve, a second circulating water-cooled regulating valve and a third circulating water-cooled regulating valve. The circulating water-cooled regulating valve represents a circulating cooling water regulating valve in a compressed air energy storage system. The compressed air energy storage system also includes energy storage auxiliary equipment, and the energy storage auxiliary equipment includes a cold tank, a hot filler, a first end cooler, a second end cooler, a first water cooler, a second water cooler, a third water cooler and a throttle valve. The control module includes a first controller and a second controller. Figure 21 represents the ambient temperature detection unit, 2 represents the gas reservoir pressure detection unit, 3 represents the gas reservoir temperature detection unit, 4 represents the first stage compressor, 5 represents the middle stage compressor, 6 represents the final stage compressor, 7 represents the first circulation water cooling regulating valve, 8 represents the second circulation water cooling regulating valve, 9 represents the third circulation water cooling regulating valve, 10 represents the first water cooler, 11 represents the second water cooler, 12 represents the third water cooler, 13 represents the first final cooler, 14 represents the second final cooler, 15 represents the hot filling, 16 represents the cold tank, 17 represents the gas storage, 18 represents the throttle valve, 19 represents the first processor, and 20 represents the second processor. Each component works together to complete the charging and discharging tasks of the compressed air energy storage system.

[0044] from Figure 2 It can be seen that the ambient temperature detection unit is deployed at the inlet end of the compressor module, the gas reservoir pressure detection unit is deployed at the gas energy inlet end or gas energy outlet end of the gas storage reservoir, and the gas reservoir temperature detection unit is deployed at the gas energy inlet end or gas energy outlet end of the gas storage reservoir. The first end of the first circulating water-cooled regulating valve is connected to the control module, the second end of the first circulating water-cooled regulating valve is connected to the energy storage auxiliary device, the first end of the second circulating water-cooled regulating valve is connected to the control module, the second end of the second circulating water-cooled regulating valve is connected to the energy storage auxiliary device, the first end of the third circulating water-cooled regulating valve is connected to the control module, and the second end of the third circulating water-cooled regulating valve is connected to the energy storage auxiliary device. The hot filler is respectively connected to the first end of the first final cooler and the first end of the second final cooler, the cold tank is respectively connected to the second end of the first final cooler and the second end of the second final cooler, the third end of the first final cooler is connected to the outlet end of the first-stage compressor, the inlet end of the first-stage compressor is respectively connected to the ambient temperature detection unit and the control module, the fourth end of the first final cooler is connected to the third end of the first water cooler, the first end of the first water cooler is connected to the second end of the first circulating water cooling regulating valve, the second end of the first water cooler is connected to the inlet end of the middle-stage compressor, the third end of the second final cooler is connected to the outlet end of the middle-stage compressor, the fourth end of the second final cooler is connected to the third end of the second water cooler, the first end of the second water cooler is connected to the second end of the second circulating water cooling regulating valve, the second end of the second water cooler is connected to the inlet end of the final-stage compressor, the outlet end of the final-stage compressor is connected to the first end of the third water cooler, the second end of the third water cooler is connected to the second end of the third circulating water cooling regulating valve, and the third end of the third water cooler is connected to the gas storage reservoir through a throttle valve. The first controller is respectively connected to the ambient temperature detection unit, the inlet end of the first compressor, the inlet end of the middle compressor, the inlet end of the final compressor, the first circulating water cooling regulating valve and the gas reservoir pressure detection unit; the second controller is respectively connected to the second circulating water cooling regulating valve, the third circulating water cooling regulating valve, the gas reservoir pressure detection unit and the gas reservoir temperature detection unit. The port where the compressor is connected to M represents the inlet end, and the closing end of the funnel represents the outlet end. The specific port numbers of each component are not shown in the figure.

[0045] Among them, the ambient temperature detection unit is used to determine the ambient temperature, the gas reservoir pressure detection unit is used to determine the gas reservoir pressure, the gas reservoir temperature detection unit is used to determine the gas reservoir temperature, and the throttle valve is used to adjust the outlet pressure of the compressed air energy storage system. The acquisition action of environmental information and pressure information can be triggered by timing, or it can be triggered according to the data acquisition instruction issued by the processing module, which is not limited in this embodiment. The advantage of such a setting is that the compressed air energy storage system can adapt to a variety of data acquisition methods. The method of collecting data at regular intervals can realize self-adjustment of system performance, and the method of triggering data collection according to instructions can realize personalized system performance adjustment.

[0046] The present invention can be provided with two controllers to respectively obtain and process different types of data, and then control different types of components, so as to improve the system performance regulation efficiency in a parallel control manner. Specifically, the first controller can be used to: determine the control parameters of the first-stage compressor, the middle-stage compressor, the last-stage compressor and the first circulation water-cooling regulating valve based on the ambient temperature obtained by the ambient temperature detection unit and the gas reservoir pressure obtained by the gas reservoir pressure detection unit, and control the first-stage compressor, the middle-stage compressor, the last-stage compressor and the first circulation water-cooling regulating valve to operate based on their respective control parameters. The second controller can be used to: determine the control parameters of the second circulation water-cooling regulating valve and the third circulation water-cooling regulating valve based on the gas reservoir temperature obtained by the gas reservoir temperature detection unit and the gas reservoir pressure obtained by the gas reservoir pressure detection unit, and control the second circulation water-cooling regulating valve and the third circulation water-cooling regulating valve to operate based on their respective control parameters.

[0047] It is worth noting that the compressed air energy storage system provided by the present invention is a three-stage compression and two-stage expansion system, which is mainly used to illustrate the structure and operation mode of the compressed air energy storage compression system with low energy loss and high conversion efficiency. This operation and control mode is also applicable to four-stage compression and three-stage expansion, five-stage compression and four-stage expansion and other multi-stage compression and expansion systems. The intermediate stage compressor refers to a non-first stage compressor whose heat at the compressor outlet is recovered by the heat exchanger. The intermediate stage compressor can be two-stage, three-stage, etc. The first circulating cooling water regulating valve refers to the circulating cooling water flow regulating valve at the inlet end of each intermediate stage compressor, which is not limited in this embodiment.

[0048] The technical solution of this embodiment will periodically obtain the operating information of the energy storage system when the compressed air energy storage system is running, and process the operating information to obtain the equipment and operating parameters that need to be adjusted in the energy storage system, so as to ensure the real-time performance of the equipment operating parameters, thereby reducing the energy loss of both fluid and mechanical equipment during the system charging and discharging process, and improving the energy conversion efficiency of the system. For example, the compression efficiency is improved, the throttling loss during the compression process is reduced, the energy waste is reduced, and the system efficiency is improved.

[0049] Figure 3This is a flow chart of a control method for a compressed air energy storage system provided by the present invention. This embodiment can be applied to improving the energy conversion efficiency of the compressed air energy storage system, improving the electric-electric conversion efficiency of the compressed air energy storage system, etc. The method is used for the compressed air energy storage system provided by the present invention, and can be executed by the control device of the compressed air energy storage system provided by the present invention. The device can be implemented in the form of hardware and / or software. In a specific embodiment, the device can be integrated in an electronic device. The following embodiments will be described by taking the device integrated in an electronic device as an example. Figure 3 , the method specifically comprises the following steps:

[0050] S101. Utilize the information detection module to obtain the ambient temperature of the compressed air energy storage system, the gas storage temperature and the gas storage pressure of the gas storage reservoir.

[0051] Among them, the information detection module can be understood as a device for obtaining the parameters required for the optimization work of the compressed air energy storage system, including but not limited to an ambient temperature sensor, a gas reservoir temperature sensor and a gas reservoir pressure sensor. The ambient temperature sensor is used to measure the ambient temperature of the compressed air energy storage system, the gas reservoir temperature sensor is used to measure the gas reservoir temperature of the gas reservoir, and the gas reservoir pressure sensor is used to measure the gas reservoir pressure of the gas reservoir. Generally, the temperature of the inlet and outlet of the gas storage reservoir can represent the temperature of the gas storage reservoir, and the pressure of the inlet and outlet of the gas storage reservoir can represent the pressure of the gas storage reservoir.

[0052] For example, assuming that the frequency of information acquisition is once every 5 minutes, during the energy storage process of the compressed air energy storage system, the ambient temperature of the compressed air energy storage system is collected once every 5 minutes through the ambient temperature sensor, the gas storage pressure of the gas storage reservoir is collected once through the gas storage pressure sensor, and the gas storage temperature of the gas storage reservoir is collected once through the gas storage temperature sensor.

[0053] The advantage of this setting is that it can ensure the real-time operating parameters of the compressed air energy storage system and improve the safety of the gas storage facility while ensuring the efficient energy storage of the compressed air energy storage system.

[0054] S102: Process the ambient temperature, the gas reservoir temperature and the gas reservoir pressure by using a pre-set parameter processing rule to obtain a first operating parameter of the regulating module and a second operating parameter of the compressor module.

[0055] Among them, the pre-set parameter processing rules can be understood as the update scheme of the operating parameters of the regulating module and the compressor module in the compressed air energy storage system, the first operating parameter can be understood as the optimized operating parameter of the regulating module parsed on the basis of the data obtained in S101, and the second operating parameter can be understood as the optimized operating parameter of the compressor module parsed on the basis of the data obtained in S101. The advantage of such a setting is to optimize the operating parameters of the regulating module and the compressor module, thereby improving the energy storage efficiency and safety of the compressed air energy storage system.

[0056] The control method of the present invention is applicable to the above-mentioned compressed air energy storage system, which includes a first processor and a second processor, which respectively perform different data processing tasks and control different components. The parameter processing rules in this embodiment include a first type of parameter processing rules and a second type of parameter processing rules. The first type of parameter processing rules can be understood as data processing rules loaded and deployed on the first processor, which are applicable to parameter information transmitted to the first processor; the second type of parameter processing rules can be understood as data processing rules loaded and deployed on the second processor, which are applicable to parameter information transmitted to the second processor. It is worth noting that there are both components in the adjustment module that are controlled by the first processor and components that are controlled by the second processor. Therefore, the operating parameters of the adjustment module are distinguished and divided into two, which are determined by the first processor and the second processor respectively. For example, the first operating parameter includes a third operating parameter and a fourth operating parameter. The third operating parameter can be understood as the operating parameter of the component controlled by the first processor in the adjustment module, and the fourth operating parameter can be understood as the operating parameter of the component controlled by the second processor in the adjustment module.

[0057] On this basis, S102 may include: facilitating the first type of parameter processing rules, processing the ambient temperature and the gas reservoir pressure to obtain the second operating parameter and the third operating parameter; facilitating the second type of parameter processing rules, processing the gas reservoir temperature and the gas reservoir pressure to obtain the fourth operating parameter.

[0058] The first processor is used to control the first circulating water cooling regulating valve, the compressor module includes a first-stage compressor, an intermediate-stage compressor and a final-stage compressor, and the second processor is used to control the second circulating water cooling regulating valve and the third circulating water cooling regulating valve. The first type of parameter processing rules include the calculation rules for the opening value of the inlet guide vane of the first-stage compressor, the calculation rules for the opening value of the inlet guide vane of the intermediate-stage compressor, the calculation rules for the speed value of the final-stage compressor and the calculation rules for the opening value of the first circulating cooling water regulating valve. The second type of parameter processing rules include the calculation rules for the opening value of the second circulating cooling water regulating valve and the calculation rules for the opening value of the third circulating cooling water regulating valve.

[0059] The calculation rule can be a data comparison table that has been trained and determined in advance, or it can be a data processing rule that has been determined in advance, so as to quickly find the required target value based on the information obtained, and then obtain the optimization parameters of the compressed air energy storage system. Taking the predetermined information comparison table as an example, the calculation rule of the opening value of the inlet guide vane of the first-stage compressor can be understood as a correlation table of the preset ambient temperature, gas reservoir pressure and the opening value coefficient of the first-stage compressor. By searching in the table according to the ambient temperature and gas reservoir pressure, the opening value coefficient of the first-stage compressor can be matched. The calculation rule of the opening value of the inlet guide vane of the intermediate-stage compressor is a correlation table of the preset ambient temperature, gas reservoir pressure and the opening value coefficient of the intermediate-stage compressor. By searching in the table according to the ambient temperature and gas reservoir pressure, the opening value coefficient of the intermediate-stage compressor can be matched. The calculation rule for the speed value of the final compressor is a correlation table of the preset ambient temperature, gas reservoir pressure and the speed value coefficient of the final compressor. By searching in the table according to the ambient temperature and gas reservoir pressure, the speed value coefficient of the final compressor can be matched. The calculation rule for the opening value of the first circulating cooling water regulating valve is a correlation table of the preset ambient temperature, gas reservoir pressure and the opening value coefficient of the first circulating cooling water regulating valve. By searching in the table according to the ambient temperature and gas reservoir pressure, the opening value coefficient of the first circulating cooling water regulating valve can be matched. Similarly, the calculation rule for the opening value of the second circulating cooling water regulating valve is a correlation table of the preset gas reservoir temperature, gas reservoir pressure and the opening value coefficient of the second circulating cooling water regulating valve. By searching in the table according to the gas reservoir temperature and gas reservoir pressure, the opening value coefficient of the second circulating cooling water regulating valve can be matched. The calculation rule for the opening value of the third circulating cooling water regulating valve is a correlation table of the pre-set gas reservoir temperature, gas reservoir pressure and the opening value coefficient of the third circulating cooling water regulating valve. The opening value coefficient of the third circulating cooling water regulating valve can be matched by searching in the table according to the gas reservoir temperature and gas reservoir pressure.

[0060] In one embodiment, when the regulating module includes a first circulating water-cooled regulating valve, and the compressor module includes a first-stage compressor, an intermediate-stage compressor, and a final-stage compressor, the first type of parameter processing rule is used to process the ambient temperature and the gas reservoir pressure to obtain the second operating parameter and the third operating parameter, including: using the first-stage compressor inlet guide vane opening value calculation rule to process the ambient temperature and the gas reservoir pressure to obtain the opening value coefficient of the first-stage compressor, and determining the inlet guide vane opening of the first-stage compressor according to the opening value coefficient and the opening design value of the first-stage compressor; using the intermediate-stage compressor inlet guide vane opening value calculation rule to process the ambient temperature and the gas reservoir pressure to obtain the intermediate-stage compressor. The opening value coefficient of the compressor is obtained, and the inlet guide vane opening of the intermediate section compressor is determined according to the opening value coefficient and the opening design value of the intermediate section compressor; the speed value calculation rule of the final section compressor is used to process the ambient temperature and the gas reservoir pressure to obtain the speed value coefficient of the final section compressor, and the speed information of the final section compressor is determined according to the speed value coefficient and the speed design value of the final section compressor; the opening value calculation rule of the first circulating cooling water regulating valve is used to process the ambient temperature and the gas reservoir pressure to obtain the opening value coefficient of the first circulating cooling water regulating valve, and the opening information of the first circulating cooling water regulating valve is determined according to the opening value coefficient and the opening design value of the first circulating cooling water regulating valve.

[0061] In another embodiment, when the regulating module includes a second circulating water-cooled regulating valve and a third circulating water-cooled regulating valve, the second type of parameter processing rules are used to process the gas reservoir temperature and the gas reservoir pressure to obtain the fourth operating parameter, including: using the second circulating cooling water regulating valve opening value calculation rule to process the gas reservoir temperature and the gas reservoir pressure to obtain the opening value coefficient of the second circulating cooling water regulating valve, and determine the opening information of the second circulating cooling water regulating valve based on the opening value coefficient and the opening design value of the second circulating cooling water regulating valve; using the third circulating cooling water regulating valve opening value calculation rule to process the gas reservoir temperature and the gas reservoir pressure to obtain the opening value coefficient of the third circulating cooling water regulating valve, and determine the opening information of the third circulating cooling water regulating valve based on the opening value coefficient and the opening design value of the third circulating cooling water regulating valve.

[0062] In the present invention, the design value is a standard quantitative value, and the operating parameters of each component are the product of the design value and the coefficient. For example, the inlet guide vane opening IGV1 of the first-stage compressor is equal to a1*IGV1DESIGN, where a1 represents the opening value coefficient of the first-stage compressor, and IGV1DESIGN represents the opening design value of the first-stage compressor. The inlet guide vane opening IGV2 of the middle-stage compressor is equal to a2*IGV2DESIGN, where a2 represents the opening value coefficient of the middle-stage compressor, and IGV2DESIGN represents the opening design value of the middle-stage compressor. The speed information N of the last-stage compressor is equal to a3*NDESIGN, where a3 represents the speed value coefficient of the last-stage compressor, and NDESIGN represents the speed value design value of the last-stage compressor. The opening information of the first circulating cooling water regulating valve K1=k1*K1DESIGN, k1 represents the opening value coefficient of the first circulating cooling water regulating valve, K1DESIGN represents the opening design value of the first circulating cooling water regulating valve, the opening information of the second circulating cooling water regulating valve K2=k2*K2DESIGN, k2 represents the opening value coefficient of the second circulating cooling water regulating valve, K2DESIGN represents the opening design value of the second circulating cooling water regulating valve. The opening information of the third circulating cooling water regulating valve K3=k3*K3DESIGN, k3 represents the opening value coefficient of the third circulating cooling water regulating valve, K3DESIGN represents the opening design value of the third circulating cooling water regulating valve.

[0063] Specifically, the relationship comparison table of the opening value coefficient of the first-stage compressor and the ambient temperature and the gas reservoir pressure is shown in Table 1, the relationship comparison table of the opening value coefficient of the middle-stage compressor and the ambient temperature and the gas reservoir pressure is shown in Table 2, the relationship comparison table of the speed value coefficient of the last-stage compressor and the ambient temperature and the gas reservoir pressure is shown in Table 3, the relationship comparison table of the opening value coefficient of the first circulation cooling water regulating valve and the ambient temperature and the gas reservoir pressure is shown in Table 4, the relationship comparison table of the opening value coefficient of the second circulation cooling water regulating valve and the gas reservoir temperature and the gas reservoir pressure is shown in Table 5, and the relationship comparison table of the opening value coefficient of the third circulation cooling water regulating valve and the gas reservoir temperature and the gas reservoir pressure is shown in Table 6. TAMB in the table represents the ambient temperature, T represents the gas reservoir temperature, and P represents the gas reservoir pressure. The horizontal headers of Tables 1 to 4 represent multiple different ambient temperatures, TAMBdesign represents the design temperature, and the vertical headers represent multiple different gas reservoir pressures, Pdesign represents the design pressure. The horizontal headers of Tables 5 and 6 represent multiple different ambient temperatures, Tdesign represents the design temperature, and the vertical headers represent multiple different gas reservoir pressures, Pdesign represents the design pressure. The corresponding coefficients can be obtained by looking up the table according to the measured data. It is worth noting that the table shows partial data. In theory, all combinations of temperature and pressure can be matched with corresponding coefficients in the table. If the match does not work, the present invention also provides coefficient calculation logic to calculate the coefficients.

[0064] Table 1

[0065]

[0066] Table 1 shows the relationship between the opening value coefficient of the first-stage compressor and the ambient temperature and the gas reservoir pressure. Assuming that the ambient temperature is TAMB1 and the gas reservoir pressure is P1, the opening value coefficient of the first-stage compressor is 1.

[0067] Table 2

[0068]

[0069] Table 2 shows the relationship between the opening value coefficient of the middle section compressor and the ambient temperature and the gas reservoir pressure. Assuming that the ambient temperature is TAMB1 and the gas reservoir pressure is P1, the opening value coefficient of the middle section compressor is 0.89.

[0070] Table 3

[0071]

[0072] Table 3 shows the relationship between the speed coefficient of the final compressor and the ambient temperature and the gas reservoir pressure. Assuming that the ambient temperature is TAMB1 and the gas reservoir pressure is P1, the speed coefficient of the final compressor is 0.

[0073] Table 4

[0074]

[0075] Table 4 shows the relationship between the opening value coefficient of the first circulating cooling water regulating valve and the ambient temperature and the gas reservoir pressure. Assuming that the ambient temperature is TAMB1 and the gas reservoir pressure is P1, the opening value coefficient of the first circulating cooling water regulating valve is 0.57.

[0076] Table 5

[0077]

[0078]

[0079] Table 5 shows the relationship between the opening value coefficient of the second circulating cooling water regulating valve and the gas reservoir temperature and gas reservoir pressure. Assuming that the gas reservoir temperature is T1 and the gas reservoir pressure is P1, the opening value coefficient of the second circulating cooling water regulating valve is 1.

[0080] Table 6

[0081]

[0082] Table 6 shows the relationship between the opening value coefficient of the third circulating cooling water regulating valve and the gas reservoir temperature and gas reservoir pressure. Assuming that the gas reservoir temperature is T1 and the gas reservoir pressure is P1, the opening value coefficient of the third circulating cooling water regulating valve is 0.

[0083] Summarizing the above table data, the control method and logic of the compressed air energy storage system can be obtained:

[0084] 1) When the ambient temperature and gas reservoir pressure are the design values, the coefficients are all 1; when the gas reservoir pressure is low, the coefficients are appropriately reduced or maintained unchanged. Specifically, reducing the opening of the inlet guide vanes of the first-stage compressor or maintaining it unchanged, reducing the opening of the inlet guide vanes of the middle-stage compressor, reducing the speed of the final-stage compressor, reducing the circulating cooling water flow of the inlet water cooler of the middle-stage compressor, and increasing the inlet temperature of the middle-stage compressor can all reduce the pressure at the outlet of the entire compression system, reduce the outlet pressure of the compression system, and reduce the throttle valve loss. When the gas reservoir pressure increases, the coefficients gradually increase. Specifically, increasing or maintaining the opening of the inlet guide vanes of the first-stage compressor, increasing the opening of the inlet guide vanes of the middle-stage compressor, increasing the speed of the final-stage compressor, and increasing the circulating cooling water flow of the inlet water cooler of the middle-stage compressor can all increase the outlet pressure of the entire compression system, so that the outlet pressure of the compression system matches the gas reservoir pressure.

[0085] 2) The correction coefficient a1 of the inlet guide vane opening of the first compressor, the correction coefficient a2 of the inlet guide vane opening of the middle compressor, the correction coefficient a3 of the speed of the last compressor, and the correction coefficient k1 of the opening of the first circulating cooling water regulating valve all change with the change of ambient temperature. On the one hand, when the ambient temperature is lower than the design value, by adjusting a1, a2, a3, and k1, the compression work of the compression system is minimized to improve the system efficiency. At the same time, the outlet temperature of the first compressor and the middle compressor can be increased as much as possible to solve the problem of low temperature of the hot tank when the compressed air energy storage system is running in winter. On the other hand, when the ambient temperature is higher than the design temperature, a1 is reduced to reduce the pressure ratio of the first compressor to prevent the outlet temperature of the first compressor from being too high, and a2 and k1 are increased. By increasing the circulating cooling water flow, the inlet temperature of the middle compressor is reduced as much as possible, the pressure ratio is increased, and a3 is adjusted to match the outlet pressure of the last compressor with the gas reservoir pressure. Through these adjustments, the compression work of the compression system is minimized, and the outlet temperature of the first compressor and the middle compressor is reduced as much as possible to solve the problem of easy overheating of the first end cooler, the second end cooler, and the hot tank when the compressed air energy storage system is running in summer.

[0086] 3) The opening correction coefficient k2 of the second circulating cooling water regulating valve and the opening correction coefficient k3 of the third circulating cooling water regulating valve are both 1 when the gas storage temperature and gas storage pressure are the design values. During the inflation process, the gas storage pressure gradually increases, and the coefficient k2 should be as large as possible, that is, the inlet temperature of the last stage compressor is reduced as much as possible, which helps to reduce the power consumption of the last stage compressor; the coefficient k3 should be as large as possible, that is, the high-pressure air at the outlet of the last stage compressor is cooled as much as possible, so as to maximize the quality of air stored in the gas storage under the fixed maximum operating pressure.

[0087] 4) When the air temperature in the gas reservoir is not lower than the second lowest value allowed by the gas storage system, k2 and k3 should be as large as possible, that is, the inlet temperature of the last-stage compressor should be reduced as much as possible, which is helpful to reduce the power consumption of the last-stage compressor and cool the high-pressure air at the outlet of the last-stage compressor as much as possible. However, when the air temperature in the gas reservoir is lower than the second lowest value allowed by the gas storage system, k3 and K2 should be reduced so that they are not the maximum value, that is, the inlet temperature of the last-stage compressor should be reduced as much as possible, which is helpful to reduce the power consumption of the last-stage compressor and reduce the degree of cooling of the high-pressure air at the outlet of the last-stage compressor to prevent the air temperature in the gas reservoir from being lower than the allowable value. When the temperature in the gas reservoir is lower than the minimum allowable value, k2 and k3 are both reduced, and the temperature of the high-pressure air entering the gas reservoir is quickly increased to ensure that the operating temperature of the gas reservoir is higher than the allowable low temperature.

[0088] It is noteworthy that the correction coefficient of the present invention is actually the coefficient of each parameter value. The word "correction" is intended to indicate that the coefficient is used to correct and optimize the operating parameters of each component, but the actual intention is the same.

[0089] S103: The control and regulation module operates based on the first operating parameter, and the compressor module operates based on the second operating parameter, so as to reduce the energy loss of the compressed air energy storage system.

[0090] Specifically, controlling the adjustment module to operate based on the first operating parameter and the compressor module to operate based on the second operating parameter can be understood as controlling the first-stage compressor to operate based on the inlet guide vane opening of the first-stage compressor, the middle-stage compressor to operate based on the inlet guide vane opening of the middle-stage compressor, the last-stage compressor to operate based on the speed information of the last-stage compressor, the first circulating cooling water regulating valve to operate based on the opening information of the first circulating cooling water regulating valve, the second circulating cooling water regulating valve to operate based on the opening information of the second circulating cooling water regulating valve, and the third circulating cooling water regulating valve to operate based on the opening information of the third circulating cooling water regulating valve.

[0091] For example, assuming that the inlet guide vane opening of the first compressor is X1, the inlet guide vane opening of the middle compressor is X2, the speed information of the last compressor is X3, the opening information of the first circulating cooling water regulating valve is X4, the opening information of the second circulating cooling water regulating valve is X5, and the opening information of the third circulating cooling water regulating valve is X6, then the first compressor is controlled to operate based on X1, the middle compressor is controlled to operate based on X2, the last compressor is controlled to operate based on X3, the first circulating cooling water regulating valve is controlled to operate based on X4, the second circulating cooling water regulating valve is controlled to operate based on X5, and the third circulating cooling water regulating valve is controlled to operate based on X6. The advantage of this setting is that the operating parameters of the compressed air energy storage system can be quickly adjusted to enable it to store and convert energy safely, stably, and efficiently.

[0092] It is worth noting that, in general, the inlet guide vane opening and the regulating valve can be directly controlled by the processor, and the speed information is realized by the processor through controlling the robotic arm.

[0093] The control method of this embodiment is applied to the compressed air energy storage system provided by the above embodiment, and has the corresponding beneficial effects of the compressed air energy storage system. Secondly, the beneficial effects that can be achieved by the present invention include: 1) By real-time monitoring of the ambient temperature and the gas reservoir pressure, the guide vanes of the first-stage compressor are appropriately adjusted to maintain the compressor outlet temperature within the safe and stable range of the system; by adjusting the guide vanes of the first-stage compressor, the guide vanes of the middle-stage compressor and the speed of the last-stage compressor, the compression ratio of each compressor is distributed to minimize the compression power consumption; by adjusting the circulating water flow entering each section of the water cooler, the inlet air temperature of the middle-stage compressor is adjusted to match the compressor pressure ratio with the gas reservoir pressure, reduce throttling losses, and by adjusting the speed of the variable frequency compressor to match the compression system outlet pressure with the gas reservoir pressure, the compressor power consumption is reduced in the process of compressing air as a whole. 2) By adjusting the air temperature at the inlet of the last-stage compressor, especially when the gas reservoir temperature is low, the inlet temperature of the last-stage compressor is increased, the cooling of the outlet air of the last-stage compressor is weakened, and the gas reservoir temperature is increased, thereby ensuring that the gas reservoir temperature is within a safe range. 3) The regulating mechanism of the present invention at least includes the guide vane opening or speed of each compressor section and the opening of multiple circulating cooling water valves. The correction coefficients of the compressor guide vane opening and the circulating cooling water regulating valve opening under different ambient temperatures, gas reservoir pressures and gas reservoir temperatures are obtained through simulation and operation calibration, and are set in the control system. Compared with the feedback control method, this positive control method reduces the conflict of regulating variables, improves the control stability of the system, effectively improves the operating efficiency of the system, saves the electricity cost of the energy storage system, and creates considerable economic benefits.

[0094] Figure 4 Schematic diagram of the structure of a control device for a compressed air energy storage system provided by the present invention. Figure 4 As shown, the device includes: an acquisition module 201, a determination module 202 and a control module 203.

[0095] The acquisition module 201 is used to obtain the ambient temperature of the compressed air energy storage system, the gas storage temperature and the gas storage pressure of the gas storage reservoir by using the information detection module.

[0096] The determination module 202 is used to process the ambient temperature, the gas reservoir temperature and the gas reservoir pressure by using a preset parameter processing rule to obtain a first operating parameter of the regulating module and a second operating parameter of the compressor module.

[0097] The control module 203 is used to control the regulating module to operate based on the first operating parameter and the compressor module to operate based on the second operating parameter, so as to reduce the energy loss of the compressed air energy storage system.

[0098] Optionally, the parameter processing rules include first-category parameter processing rules and second-category parameter processing rules, and the first operating parameters include third operating parameters and fourth operating parameters.

[0099] Optionally, the determination module 202 is specifically used to facilitate the first type of parameter processing rules to process the ambient temperature and the gas reservoir pressure to obtain the second operating parameter and the third operating parameter; and to facilitate the second type of parameter processing rules to process the gas reservoir temperature and the gas reservoir pressure to obtain the fourth operating parameter.

[0100] Optionally, the first type of parameter processing rules include the calculation rules for the opening value of the inlet guide vane of the first-stage compressor, the calculation rules for the opening value of the inlet guide vane of the middle-stage compressor, the calculation rules for the speed value of the last-stage compressor, and the calculation rules for the opening value of the first circulating cooling water regulating valve; the second type of parameter processing rules include the calculation rules for the opening value of the second circulating cooling water regulating valve and the calculation rules for the opening value of the third circulating cooling water regulating valve.

[0101] Optionally, when the regulating module includes a first circulating water-cooled regulating valve, and the compressor module includes a first-stage compressor, an intermediate-stage compressor and a final-stage compressor, the determining module 202 is specifically used to utilize the calculation rule for the opening value of the inlet guide vane of the first-stage compressor to process the ambient temperature and the gas reservoir pressure to obtain the opening value coefficient of the first-stage compressor, and determine the inlet guide vane opening of the first-stage compressor according to the opening value coefficient and the opening design value of the first-stage compressor; utilize the calculation rule for the opening value of the inlet guide vane of the intermediate-stage compressor to process the ambient temperature and the gas reservoir pressure to obtain the opening value coefficient of the intermediate-stage compressor, and determine the opening value of the inlet guide vane of the first-stage compressor according to the opening value coefficient and the opening design value of the intermediate-stage compressor. The inlet guide vane opening of the intermediate-stage compressor is determined by the opening value coefficient and the opening design value; the speed value calculation rule of the final-stage compressor is used to process the ambient temperature and the gas reservoir pressure to obtain the speed value coefficient of the final-stage compressor, and the speed information of the final-stage compressor is determined according to the speed value coefficient and the speed value design value of the final-stage compressor; the opening value calculation rule of the first circulating cooling water regulating valve is used to process the ambient temperature and the gas reservoir pressure to obtain the opening value coefficient of the first circulating cooling water regulating valve, and the opening information of the first circulating cooling water regulating valve is determined according to the opening value coefficient and the opening design value of the first circulating cooling water regulating valve.

[0102] Optionally, when the regulating module includes a second circulating water-cooled regulating valve and a third circulating water-cooled regulating valve, the determination module 202 is specifically used to use the second circulating cooling water regulating valve opening value calculation rule to process the gas reservoir temperature and the gas reservoir pressure to obtain the opening value coefficient of the second circulating cooling water regulating valve, and determine the opening information of the second circulating cooling water regulating valve according to the opening value coefficient and the opening design value of the second circulating cooling water regulating valve; use the third circulating cooling water regulating valve opening value calculation rule to process the gas reservoir temperature and the gas reservoir pressure to obtain the opening value coefficient of the third circulating cooling water regulating valve, and determine the opening information of the third circulating cooling water regulating valve according to the opening value coefficient and the opening design value of the third circulating cooling water regulating valve.

[0103] The control device of the compressed air energy storage system provided in this embodiment can execute the control method of the compressed air energy storage system provided in any embodiment of the present invention, and has the corresponding functional modules and beneficial effects of the execution method.

[0104] Figure 5: is a schematic diagram of the structure of an electronic device provided by the present invention. The electronic device is intended to represent various forms of digital computers, such as laptop computers, desktop computers, workbenches, personal digital assistants, servers, blade servers, mainframe computers, and other suitable computers. The electronic device may also represent various forms of mobile devices, such as personal digital processing, cellular phones, smart phones, wearable devices (such as helmets, glasses, watches, etc.) and other similar computing devices. The components shown herein, their connections and relationships, and their functions are merely examples and are not intended to limit the implementation of the present invention described and / or required herein.

[0105] like Figure 5 As shown, the electronic device 10 includes at least one processor 11, and a memory connected to the at least one processor 11, such as a read-only memory (ROM) 12, a random access memory (also called random access memory, RAM) 13, etc., wherein the memory stores a computer program that can be executed by at least one processor, and the processor 11 can perform various appropriate actions and processes according to the computer program stored in the read-only memory (ROM) 12 or the computer program loaded from the storage unit 18 to the random access memory (RAM) 13. In the RAM 13, various programs and data required for the operation of the electronic device 10 can also be stored. The processor 11, ROM 12 and RAM 13 are connected to each other through a bus 14. An input / output (I / O) interface 15 is also connected to the bus 14.

[0106] A number of components in the electronic device 10 are connected to the I / O interface 15, including: an input unit 16, such as a keyboard, a mouse, etc.; an output unit 17, such as various types of displays, speakers, etc.; a storage unit 18, such as a disk, an optical disk, etc.; and a communication unit 19, such as a network card, a modem, a wireless communication transceiver, etc. The communication unit 19 allows the electronic device 10 to exchange information / data with other devices through a computer network such as the Internet and / or various telecommunication networks.

[0107] The processor 11 may be a variety of general and / or special processing components with processing and computing capabilities. Some examples of the processor 11 include, but are not limited to, a central processing unit (CPU), a graphics processing unit (GPU), various dedicated artificial intelligence (AI) computing chips, various processors running machine learning model algorithms, a digital signal processor (DSP), and any appropriate processor, controller, microcontroller, etc. The processor 11 executes the various methods and processes described above, such as a control method for a compressed air energy storage system.

[0108] In some embodiments, the control method of the compressed air energy storage system may be implemented as a computer program, which is tangibly contained in a computer-readable storage medium, such as a storage unit 18. In some embodiments, part or all of the computer program may be loaded and / or installed on the electronic device 10 via the ROM 12 and / or the communication unit 19. When the computer program is loaded into the RAM 13 and executed by the processor 11, one or more steps of the control method of the compressed air energy storage system described above may be performed. Alternatively, in other embodiments, the processor 11 may be configured to execute the control method of the compressed air energy storage system in any other appropriate manner (e.g., by means of firmware).

[0109] 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 chips (SOCs), load programmable logic devices (CPLDs), computer hardware, firmware, software, and / or combinations thereof. These various embodiments may include: being implemented in one or more computer programs that can be executed and / or interpreted on a programmable system including at least one programmable processor, which can be a special purpose or general purpose programmable processor that can receive data and instructions from a storage system, at least one input device, and at least one output device, and transmit data and instructions to the storage system, the at least one input device, and the at least one output device.

[0110] Computer programs for implementing 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, so that when the computer program is executed by the processor, the functions / operations specified in the flow chart and / or block diagram are implemented. The computer program may be executed entirely on the machine, partially on the machine, partially on the machine and partially on a remote machine as a stand-alone software package, or entirely on a remote machine or server.

[0111] In the context of the present invention, a computer-readable storage medium may be a tangible medium that may contain or store a computer program for use by or in conjunction with an instruction execution system, device, or equipment. A computer-readable storage medium may include, but is not limited to, an electronic, magnetic, optical, electromagnetic, infrared, or semiconductor system, device, or equipment, or any suitable combination of the foregoing. Alternatively, a computer-readable storage medium may be a machine-readable signal medium. A more specific example of a machine-readable storage medium may include an electrical connection based on one or more lines, 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), an optical fiber, a portable compact disk read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the foregoing.

[0112] To provide interaction with a user, the systems and techniques described herein may be implemented on an electronic device having: a display device (e.g., a CRT (cathode ray tube) or LCD (liquid crystal display) monitor) for displaying information to the user; and a keyboard and a pointing device (e.g., a mouse or trackball) through which the user can provide input to the electronic device. Other types of devices may also be used to provide interaction with the user; for example, the feedback provided to the user may be any form of sensory feedback (e.g., visual feedback, auditory feedback, or tactile feedback); and input from the user may be received in any form (including acoustic input, language input, or tactile input).

[0113] The systems and techniques described herein can be implemented in a computing system that includes backend components (e.g., as a data server) or a computing system that includes middleware components (e.g., an application server) or a computing system that includes frontend components (e.g., a user computer with a graphical user interface or a web browser through which a user can interact with implementations of the systems and techniques described herein) or a computing system that includes any combination of such backend components, middleware components, or frontend components. The components of the system can be interconnected by any form or medium of digital data communication (e.g., a communication network). Examples of communication networks include: a local area network (LAN), a wide area network (WAN), a blockchain network, and the Internet.

[0114] A computing system may include a client and a server. The client and the server are generally remote from each other and usually interact through a communication network. The client and server relationship is generated by computer programs running on the corresponding computers and having a client-server relationship with each other. The server may be a cloud server, also known as a cloud computing server or cloud host, which is a host product in the cloud computing service system to solve the defects of difficult management and weak business scalability in traditional physical hosts and VPS services.

[0115] In one embodiment, the present invention further includes a computer program product, the computer program product includes a computer program, and the computer program implements the control method of the compressed air energy storage system of any embodiment of the present invention when executed by a processor.

[0116] In the process of implementation, the computer program product can be written in one or more programming languages ​​or a combination thereof to perform the computer program code of the present invention, including object-oriented programming languages, such as Java, Smalltalk, C++, and conventional procedural programming languages, such as "C" language or similar programming languages. The program code can be executed entirely on the user's computer, partially on the user's computer, as a separate software package, partially on the user's computer and partially on a remote computer, or entirely on a remote computer or server. In the case of a remote computer, the remote computer can be connected to the user's computer through any type of network, including a local area network (LAN) or a wide area network (WAN), or can be connected to an external computer (for example, using an Internet service provider to connect through the Internet).

[0117] It should be understood that the various forms of processes shown above can be used to reorder, add or delete steps. For example, the steps described in the present invention can be executed in parallel, sequentially or in different orders, as long as the desired results of the technical solution of the present invention can be achieved, and this document does not limit this.

[0118] The above specific implementations do not constitute a limitation on the protection scope of the present invention. It should be understood by those skilled in the art that various modifications, combinations, sub-combinations and substitutions can be made according to design requirements and other factors. Any modification, equivalent substitution and improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A compressed air energy storage system, characterized in that: include: A control module, an information detection module, an adjustment module, a gas storage reservoir and a compressor module, wherein the control module is respectively connected to the information detection module, the adjustment module and the compressor module, the gas storage reservoir is respectively connected to the compressor module and the information detection module, and the gas storage reservoir is used to store gas energy; The control module is used to collect the initial operating parameters of the compressed air energy storage system through the information detection module when the compressed air energy storage system is running, determine the module to be adjusted and the target operating parameters of the compressed air energy storage system according to the initial operating parameters, and control the module to be adjusted to operate based on the target operating parameters; Among them, when the compressed air energy storage system is running, the gas storage reservoir performs potential energy storage work or potential energy release work, the initial operating parameters include the ambient temperature of the compressed air energy storage system, the gas storage temperature and gas storage pressure of the gas storage reservoir, the module to be adjusted includes the compressor module and the regulation module, and the target operating parameters are used to reduce the energy loss of the compressed air energy storage system.

2. The compressed air energy storage system according to claim 1, characterized in that: The information detection module includes an ambient temperature detection unit, a gas reservoir pressure detection unit and a gas reservoir temperature detection unit; Wherein, the ambient temperature detection unit is deployed at the inlet end of the compressor module to determine the ambient temperature; The gas reservoir pressure detection unit is deployed at the gas energy inlet or gas energy outlet of the gas storage reservoir to determine the gas reservoir pressure, and the gas reservoir temperature detection unit is deployed at the gas energy inlet or gas energy outlet of the gas storage reservoir to determine the gas reservoir temperature.

3. The compressed air energy storage system according to claim 2, characterized in that: The compressor module includes a first-stage compressor, a middle-stage compressor and a final-stage compressor, and the regulating module includes a first circulating water-cooling regulating valve, a second circulating water-cooling regulating valve and a third circulating water-cooling regulating valve; Among them, the first end of the first circulating water-cooling regulating valve is connected to the control module, the second end of the first circulating water-cooling regulating valve is connected to the energy storage auxiliary device, the first end of the second circulating water-cooling regulating valve is connected to the control module, the second end of the second circulating water-cooling regulating valve is connected to the energy storage auxiliary device, the first end of the third circulating water-cooling regulating valve is connected to the control module, and the second end of the third circulating water-cooling regulating valve is connected to the energy storage auxiliary device.

4. The compressed air energy storage system according to claim 3, characterized in that: The energy storage auxiliary equipment includes a cold tank, a hot filler, a first final cooler, a second final cooler, a first water cooler, a second water cooler, a third water cooler and a throttle valve; Wherein, the hot filler is respectively connected to the first end of the first final cooler and the first end of the second final cooler, the cold tank is respectively connected to the second end of the first final cooler and the second end of the second final cooler, the third end of the first final cooler is connected to the outlet end of the first-stage compressor, the inlet end of the first-stage compressor is respectively connected to the ambient temperature detection unit and the control module, the fourth end of the first final cooler is connected to the third end of the first water cooler, the first end of the first water cooler is connected to the second end of the first circulating water cooling regulating valve, the second end of the first water cooler is connected to the inlet end of the intermediate section compressor, the third end of the second final cooler is connected to the outlet end of the intermediate section compressor, the fourth end of the second final cooler is connected to the third end of the second water cooler, the first end of the second water cooler is connected to the second end of the second circulating water cooling regulating valve, the second end of the second water cooler is connected to the inlet end of the final section compressor, the outlet end of the final section compressor is connected to the first end of the third water cooler, the second end of the third water cooler is connected to the second end of the third circulating water cooling regulating valve, the third end of the third water cooler is connected to the air storage reservoir through the throttle valve, and the throttle valve is used to adjust the outlet pressure of the compressed air energy storage system.

5. The compressed air energy storage system according to claim 4, characterized in that: The control module includes a first controller and a second controller; Among them, the first controller is respectively connected to the ambient temperature detection unit, the inlet end of the first-stage compressor, the inlet end of the middle-stage compressor, the inlet end of the final-stage compressor, the first circulating water cooling regulating valve and the gas reservoir pressure detection unit; the second controller is respectively connected to the second circulating water cooling regulating valve, the third circulating water cooling regulating valve, the gas reservoir pressure detection unit and the gas reservoir temperature detection unit.

6. The compressed air energy storage system according to claim 5, characterized in that: The first controller is specifically used to: determine the control parameters of the first-stage compressor, the middle-stage compressor, the last-stage compressor and the first circulating water-cooling regulating valve based on the ambient temperature obtained by the ambient temperature detection unit and the gas reservoir pressure obtained by the gas reservoir pressure detection unit, and control the first-stage compressor, the middle-stage compressor, the last-stage compressor and the first circulating water-cooling regulating valve to operate based on their respective control parameters; The second controller is specifically used to determine the control parameters of the second circulating water cooling regulating valve and the third circulating water cooling regulating valve based on the gas reservoir temperature obtained by the gas reservoir temperature detection unit and the gas reservoir pressure obtained by the gas reservoir pressure detection unit, and control the second circulating water cooling regulating valve and the third circulating water cooling regulating valve to operate based on their respective control parameters.

7. A control method for a compressed air energy storage system, characterized in that: A control module applied to a compressed air energy storage system according to any one of claims 1 to 6, the method comprising: Using the information detection module, the ambient temperature of the compressed air energy storage system, the gas storage temperature and the gas storage pressure of the gas storage reservoir are obtained; Using a pre-set parameter processing rule, the ambient temperature, the gas reservoir temperature and the gas reservoir pressure are processed to obtain a first operating parameter of the regulating module and a second operating parameter of the compressor module; The regulating module is controlled to operate based on the first operating parameter and the compressor module is controlled to operate based on the second operating parameter to reduce the energy loss of the compressed air energy storage system.

8. The method according to claim 7, characterized in that The parameter processing rules include first-type parameter processing rules and second-type parameter processing rules, the first operating parameters include third operating parameters and fourth operating parameters, and the ambient temperature, the gas reservoir temperature and the gas reservoir pressure are processed by using the pre-set parameter processing rules to obtain the first operating parameters of the regulating module and the second operating parameters of the compressor module, including: The ambient temperature and the gas reservoir pressure are processed according to the first type parameter processing rule to obtain the second operating parameter and the third operating parameter; The gas reservoir temperature and the gas reservoir pressure are processed according to the second type parameter processing rule to obtain the fourth operating parameter.

9. The method according to claim 8, characterized in that The first type of parameter processing rules include a calculation rule for the opening value of the inlet guide vane of the first-stage compressor, a calculation rule for the opening value of the inlet guide vane of the middle-stage compressor, a calculation rule for the speed value of the last-stage compressor, and a calculation rule for the opening value of the first circulating cooling water regulating valve; when the regulating module includes a first circulating water cooling regulating valve, and the compressor module includes a first-stage compressor, a middle-stage compressor, and a last-stage compressor, the first type of parameter processing rules are used to process the ambient temperature and the gas reservoir pressure to obtain the second operating parameter and the third operating parameter, including: The ambient temperature and the gas reservoir pressure are processed by using the calculation rule of the inlet guide vane opening value of the first-stage compressor to obtain the opening value coefficient of the first-stage compressor, and the inlet guide vane opening of the first-stage compressor is determined according to the opening value coefficient and the opening design value of the first-stage compressor; The ambient temperature and the gas reservoir pressure are processed by using the calculation rule of the inlet guide vane opening value of the intermediate section compressor to obtain the opening value coefficient of the intermediate section compressor, and the inlet guide vane opening of the intermediate section compressor is determined according to the opening value coefficient and the opening design value of the intermediate section compressor; The ambient temperature and the gas reservoir pressure are processed by using the speed value calculation rule of the final compressor to obtain the speed value coefficient of the final compressor, and the speed information of the final compressor is determined according to the speed value coefficient of the final compressor and the speed value design value; The ambient temperature and the gas reservoir pressure are processed by utilizing the opening value calculation rule of the first circulating cooling water regulating valve to obtain the opening value coefficient of the first circulating cooling water regulating valve, and the opening information of the first circulating cooling water regulating valve is determined according to the opening value coefficient and the opening design value of the first circulating cooling water regulating valve.

10. The method according to claim 8, characterized in that The second type of parameter processing rules include a second circulating cooling water regulating valve opening value calculation rule and a third circulating cooling water regulating valve opening value calculation rule. When the regulating module includes a second circulating water cooling regulating valve and a third circulating water cooling regulating valve, the gas reservoir temperature and the gas reservoir pressure are processed according to the second type of parameter processing rules to obtain the fourth operating parameter, including: The gas reservoir temperature and the gas reservoir pressure are processed by using the second circulating cooling water regulating valve opening value calculation rule to obtain the opening value coefficient of the second circulating cooling water regulating valve, and the opening information of the second circulating cooling water regulating valve is determined according to the opening value coefficient and the opening design value of the second circulating cooling water regulating valve; The gas reservoir temperature and the gas reservoir pressure are processed by utilizing the opening value calculation rule of the third circulating cooling water regulating valve to obtain the opening value coefficient of the third circulating cooling water regulating valve, and the opening information of the third circulating cooling water regulating valve is determined according to the opening value coefficient and the opening design value of the third circulating cooling water regulating valve.

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