Method and device for determining arrangement information of underwater air storage array of compressed air energy storage system and compressed air energy storage system

Abstract

The invention relates to an underwater air storage array arrangement information determination method and device of a compressed air energy storage system and the compressed air energy storage system, and relates to the technical field of underwater energy storage. The method comprises the steps that the valve cost is determined according to the number of gas storage containers and the single valve cost; the valve station cost is determined according to the pipeline connection information of the pipeline; determining the total pipeline cost according to the pipeline connection information and the pipeline unit length cost of the pipeline; the cost per unit length of the pipeline is determined based on gas information of the compressed air energy storage system; determining the energy storage loss standard deviation of the loss information according to the pipeline connection information and the gas information; and the valve cost, the valve station cost and the total pipeline cost are determined as the arrangement cost, the arrangement cost, the loss information and the energy storage loss standard deviation serve as multiple targets, the number of target valve stations, the positions of the target valve stations and target pipeline connection information are determined, and underwater gas storage array arrangement information is obtained. The compressed air energy storage system built by adopting the method can improve the energy storage capacity.

Description

Technical Field

[0001] The present application relates to the technical field of underwater energy storage, and particularly to a method and device for determining the arrangement information of an underwater gas storage array of a compressed air energy storage system, a compressed air energy storage system, a computer device, a computer-readable storage medium, and a computer program product. Background Art

[0002] A compressed air energy storage system refers to a system that compresses gas and stores it in a gas storage container when pressure needs to be stored, and releases the gas in the gas storage container when pressure needs to be released.

[0003] In related technologies, a compressed air energy storage system usually adopts a single gas storage container located underwater, such as a single airbag; however, due to factors such as manufacturing process, material limitations, and different environmental pressures at different underwater positions, the energy storage capacity of the gas storage container is often limited, resulting in a limited energy storage capacity of the compressed air energy storage system. Summary of the Invention

[0004] Based on this, in view of the technical problem of the limited energy storage capacity of the above-mentioned compressed air energy storage system, it is necessary to provide a method and device for determining the arrangement information of an underwater gas storage array of a compressed air energy storage system, a compressed air energy storage system, a computer device, and a computer-readable storage medium that can improve the energy storage capacity of the compressed air energy storage system.

[0005] In a first aspect, the present application provides a method for determining the arrangement information of an underwater gas storage array of a compressed air energy storage system, including:

[0006] Determine the valve cost of the valves to be arranged underwater in the compressed air energy storage system according to the number of gas storage containers of the compressed air energy storage system underwater and the cost of a single valve; the compressed air energy storage system includes at least a control platform above water and multiple gas storage containers underwater; there are multiple valves, and each gas storage container corresponds to one valve;

[0007] Determine the valve station cost of the valve stations to be arranged underwater in the compressed air energy storage system according to the pipeline connection information of the pipelines to be arranged underwater in the compressed air energy storage system; there is at least one valve station, and there is at least one valve in each valve station; the pipeline connection information is used to characterize the connection relationship between the control platform, each gas storage container, each valve, and each valve station based on the pipeline;

[0008] Determine the total pipeline cost of the pipeline according to the pipeline connection information and the unit length cost of the pipeline; the unit length cost of the pipeline is determined based on the gas information corresponding to the compressed air energy storage system;

[0009] Determine the loss information of the compressed air energy storage system and the standard deviation of the energy storage loss of each gas storage container according to the pipeline connection information and the gas information;

[0010] Determine the valve cost, the valve station cost, and the total pipeline cost as the layout cost. Taking the layout cost, the loss information, and the standard deviation of the energy storage loss as multiple objectives, determine the target number of valve stations, the target positions of the valve stations, and the target pipeline connection information of the compressed air energy storage system, and obtain the underwater gas storage array layout information of the compressed air energy storage system.

[0011] In a second aspect, the present application also provides a device for determining the underwater gas storage array layout information of a compressed air energy storage system, including:

[0012] A valve cost determination module, configured to determine the valve cost of the valves to be arranged underwater in the compressed air energy storage system according to the number of gas storage containers underwater in the compressed air energy storage system and the cost of a single valve; the compressed air energy storage system includes at least a control platform above water and multiple gas storage containers underwater; there are multiple valves, and each gas storage container corresponds to one valve;

[0013] A valve station cost determination module, configured to determine the valve station cost of the valve stations to be arranged underwater in the compressed air energy storage system according to the pipeline connection information of the pipelines to be arranged underwater in the compressed air energy storage system; there is at least one valve station, and there is at least one valve in each valve station; the pipeline connection information is used to characterize the connection relationship between the control platform, each gas storage container, each valve, and each valve station based on the pipeline;

[0014] A total pipeline cost determination module, configured to determine the total pipeline cost of the pipeline according to the pipeline connection information and the unit length cost of the pipeline; the unit length cost of the pipeline is determined based on the gas information corresponding to the compressed air energy storage system;

[0015] A loss information determination module, configured to determine the loss information of the compressed air energy storage system and the standard deviation of the energy storage loss of each gas storage container according to the pipeline connection information and the gas information;

[0016] A layout information determination module, configured to determine the valve cost, the valve station cost, and the total pipeline cost as the layout cost. Taking the layout cost, the loss information, and the standard deviation of the energy storage loss as multiple objectives, determine the target number of valve stations, the target positions of the valve stations, and the target pipeline connection information of the compressed air energy storage system, and obtain the underwater gas storage array layout information of the compressed air energy storage system.

[0017] In a third aspect, the present application also provides a compressed air energy storage system. The arrangement information of the underwater gas storage array of the compressed air energy storage system is determined by the method for determining the arrangement information of the underwater gas storage array of the compressed air energy storage system. The system includes:

[0018] A control platform located above the water for controlling the compressed air energy storage system;

[0019] A plurality of gas storage containers located underwater, each gas storage container for storing compressed gas;

[0020] A plurality of valves located underwater, each valve corresponding to a gas storage container, and each valve for controlling the intake and exhaust of the corresponding gas storage container;

[0021] At least one valve station located underwater, with at least one valve in each valve station, and each valve station for controlling the valves in the valve station;

[0022] Pipes located underwater for connecting the control platform, each gas storage container, each valve, and each valve station.

[0023] In a fourth aspect, the present application also provides a computer device, including a memory and a processor. The memory stores a computer program, and when the processor executes the computer program, it implements the steps of a method for determining the arrangement information of the underwater gas storage array of a compressed air energy storage system.

[0024] In a fifth aspect, the present application also provides a computer-readable storage medium, on which a computer program is stored. When the computer program is executed by a processor, it implements the steps of a method for determining the arrangement information of the underwater gas storage array of a compressed air energy storage system.

[0025] The method, device, compressed air energy storage system, computer device, and computer-readable storage medium for determining the underwater gas storage array layout information of the above-mentioned compressed air energy storage system determine the valve cost of the valves to be installed underwater in the compressed air energy storage system according to the number of gas storage containers underwater in the compressed air energy storage system and the cost of a single valve; the compressed air energy storage system includes at least a control platform above water and multiple gas storage containers underwater; there are multiple valves, and each gas storage container corresponds to one valve; according to the pipeline connection information of the pipelines to be arranged underwater in the compressed air energy storage system, determine the valve station cost of the valve stations to be installed underwater in the compressed air energy storage system; there is at least one valve station, and there is at least one valve in each valve station; the pipeline connection information is used to characterize the connection relationship based on pipelines among the control platform, each gas storage container, each valve, and each valve station; according to the pipeline connection information and the unit length cost of the pipeline, determine the total pipeline cost of the pipeline; the unit length cost of the pipeline is determined based on the gas information corresponding to the compressed air energy storage system; according to the pipeline connection information and the gas information, determine the loss information of the compressed air energy storage system and the standard deviation of the energy storage loss of each gas storage container; determine the layout cost by taking the valve cost, valve station cost, and total pipeline cost, and with the layout cost, loss information, and standard deviation of the energy storage loss as multiple objectives, determine the target number of valve stations, target valve station locations, and target pipeline connection information of the compressed air energy storage system, so as to obtain the underwater gas storage array layout information of the compressed air energy storage system. In this way, based on the valve cost, valve station cost, total pipeline cost, loss information, and standard deviation of the energy storage loss, it is possible to determine the target number of valve stations, target valve station locations, and target pipeline connection information of the compressed air energy storage system with the layout cost, loss information, and standard deviation of the energy storage loss as multiple objectives, and further obtain the underwater gas storage array layout information of the compressed air energy storage system. Based on the determined underwater gas storage array layout information, corresponding valves, valve stations, and pipelines can be set underwater for the compressed air energy storage system, thereby realizing the construction of a compressed air energy storage system with multiple gas storage containers, and further improving the energy storage capacity of the compressed air energy storage system. Brief Description of the Drawings

[0026] In order to more clearly illustrate the technical solutions in the embodiments of the present application or related technologies, the following will briefly introduce the drawings required for use in the description of the embodiments of the present application or related technologies. Obviously, the drawings in the following description are only some embodiments of the present application. For those of ordinary skill in the art, without creative efforts, other related drawings can also be obtained based on these drawings.

[0027] Figure 1 It is a schematic diagram of a compressed air energy storage system in an embodiment;

[0028] Figure 2 It is a schematic diagram of pipeline connection in an embodiment;

[0029] Figure 3 It is a schematic flow chart of a method for determining the arrangement information of an underwater gas storage array in a compressed air energy storage system in an embodiment;

[0030] Figure 4 It is a schematic flow chart of steps for determining the cost per unit length of each pipeline in an embodiment;

[0031] Figure 5 It is a schematic flow chart of steps for determining the total pipeline cost of a pipeline according to pipeline connection information and the cost per unit length of the pipeline in an embodiment;

[0032] Figure 6 It is a schematic flow chart of steps for determining the loss information of a compressed air energy storage system and the standard deviation of energy storage loss of each gas storage container according to pipeline connection information and gas information in an embodiment;

[0033] Figure 7 It is a schematic flow chart of steps for determining loss information based on the energy storage pressure loss and energy release pressure loss of each gas storage container in an embodiment;

[0034] Figure 8 It is a schematic flow chart of a method for determining the arrangement information of an underwater gas storage array in a compressed air energy storage system in another embodiment;

[0035] Figure 9 It is a structural block diagram of a device for determining the arrangement information of an underwater gas storage array in a compressed air energy storage system in an embodiment;

[0036] Figure 10 It is an internal structure diagram of a computer device in an embodiment.

[0037] Explanation of reference numerals: 100, control platform; 200, gas storage container; 300, valve; 400, valve station; 500, pipeline; 520, first pipeline; 522, main pipe interface; 540, second pipeline; 560, third pipeline. Detailed implementation manners

[0038] In order to make the purpose, technical solutions and advantages of the present application clearer, the present application will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0039] It should be noted that the user information (including but not limited to user device information, user personal information, etc.) and data (including but not limited to data for analysis, stored data, displayed data, etc.) involved in the present application are all information and data authorized by the user or fully authorized by all parties, and the collection, use and processing of relevant data need to comply with relevant regulations.

[0040] In one embodiment, a method for determining the underwater gas storage array layout information of a compressed air energy storage system is provided. In this embodiment, an example is given where the method is applied to a server. It can be understood that the method can also be applied to a terminal, or to a system including a server and a terminal, and is implemented through the interaction between the server and the terminal; among them, the server can be an independent physical server, or a server cluster or distributed system composed of multiple physical servers, or a cloud server providing cloud computing services; the terminal can be, but is not limited to, various personal computers, laptop computers, smart phones, tablet computers, etc.

[0041] As Figure 1 shown is a schematic diagram of a compressed air energy storage system built based on the underwater gas storage array layout information determined according to the present application. The compressed air energy storage system includes a control platform 100 located above water, a plurality of gas storage containers 200 located underwater, a plurality of valves 300 to be arranged underwater, at least one valve station 400 to be arranged underwater, and a pipeline 500 to be arranged underwater.

[0042] Among them, the control platform 100 is used to control the compressed air energy storage system. In a specific application, the control platform includes a compression device and an expansion device. The compression device is used to compress gas into the gas storage container through electric energy during energy storage, and the expansion device is used to release the compressed gas in the gas storage container and use it for power generation during energy release.

[0043] Among them, the gas storage container 200 is used to store the compressed gas. In a specific application, the gas storage container 200 is a gas storage airbag. In actual applications, the heights of the gas storage containers 200 are the same.

[0044] Among them, for the valve 300, each valve 300 corresponds to a gas storage container 200 and is used to control the intake and exhaust of the corresponding gas storage container 200.

[0045] Among them, for the valve station 400, there is at least one valve 300 in each valve station 400, which is used to control the valves 300 in the valve station 400. In a specific application, the valve operation power supply is connected to the valve station through a power supply cable, and the power is distributed to each valve. In a specific application, the valve station 400 is of a closed structure to reduce the influence of the underwater environment on the valves. In actual applications, the valve station 400 is a stainless steel chamber, and an O-ring seal is provided at the place where the pipeline and cable are connected to ensure sealing.

[0046] Among them, the pipeline 500 is used to connect the control platform 100, each gas storage container 200, each valve 300, and each valve station 400. In specific applications, the pipeline 500 includes at least a first pipeline 520 connected to the control platform 100 for the compressed air energy storage system to extend underwater, a second pipeline 540 connecting each valve station 400 and the first pipeline 520, and a third pipeline 560 for connecting each gas storage container 200 and the corresponding valve 300. That is, referring to Figure 1 , each gas storage container 200 needs to be connected to the corresponding valve 300 through the third pipeline 560; each valve station 400 needs to be connected to the first pipeline 520 through the second pipeline 540. Further, the valve stations 400 can first be connected to a common second pipeline 540 through their respective corresponding second pipelines 540, and then connected to the first pipeline 520 through this common second pipeline 540, or the valve stations 400 are directly connected to the first pipeline 520 through the corresponding second pipelines 540. In specific applications, there is a main pipe interface 522 on the first pipeline 520, and the second pipeline 540 is connected to the first pipeline 520 through the main pipe interface 522. In actual applications, the number of the first pipelines 520 is one.

[0047] Such as Figure 2 shown is a schematic diagram of the pipeline connection in the compressed air energy storage system.

[0048] Such as Figure 3 shown, in this embodiment, the method includes the following steps S202 to S212:

[0049] Step S302, determine the valve cost of the valves to be set underwater in the compressed air energy storage system according to the number of gas storage containers underwater in the compressed air energy storage system and the cost of a single valve.

[0050] Among them, referring to Figure 1 , the compressed air energy storage system includes at least a control platform above water and multiple gas storage containers underwater.

[0051] Among them, referring to Figure 1 , there are multiple valves, and each gas storage container corresponds to one valve; each valve is used to control the intake and exhaust of the corresponding gas storage container.

[0052] Among them, the cost of a single valve is the cost of setting a single valve.

[0053] Among them, the valve cost is used to represent the total cost of setting valves for the compressed air energy storage system.

[0054] Specifically, the number of gas storage containers of the compressed air energy storage system is known, and each gas storage container corresponds to a valve. Therefore, the number of gas storage containers is the number of valves to be set. The cost of a single valve is known. Therefore, based on the number of gas storage containers and the cost of a single valve, the server can obtain an expression for the valve cost of setting valves for the compressed air energy storage system.

[0055] In a specific application, the expression for the valve cost is as shown in Formula 1:

[0056] (Formula 1)

[0057] Where, is the valve cost; is the number of gas storage containers, that is, the number of valves; is the cost of a single valve.

[0058] Step S304: Determine the valve station cost of the valves to be set underwater for the compressed air energy storage system according to the pipeline connection information of the pipelines to be arranged underwater for the compressed air energy storage system.

[0059] Among them, referring to Figure 1 , there is at least one valve station, and there is at least one valve in each valve station.

[0060] Among them, the valve station cost is used to characterize the total cost of setting up valve stations for the compressed air energy storage system.

[0061] Among them, referring to Figure 1 , the pipeline includes a first pipeline, a second pipeline, and a third pipeline. The first pipeline is connected to the control platform for the compressed air energy storage system to extend underwater. The second pipeline is used to connect each valve station to the first pipeline. The third pipeline is used to connect each gas storage container to the corresponding valve. In a specific application, there is a main pipe interface on the first pipeline, and the second pipeline is connected to the first pipeline through the main pipe interface.

[0062] Among them, the pipeline connection information is used to characterize the connection relationship based on the pipeline among the control platform, each gas storage container, each valve, and each valve station. In a specific application, referring to Figure 2 , the pipeline connection information includes the pipeline connection relationship, the pipeline length, and the position of the main pipe interface on the first pipeline. The three influence each other. Among them, the pipeline connection relationship includes the connection relationship between the gas storage container and the valve station and the connection relationship between the valve station and the first pipeline. Further, the connection relationship between the valve station and the first pipeline includes an indirect connection relationship and a direct connection relationship. The indirect connection relationship means that the valve station first connects to a common second pipeline through their respective corresponding second pipelines, and then connects to the first pipeline through the common second pipeline. The direct connection relationship means that the valve station directly connects to the first pipeline through the corresponding second pipeline.

[0063] In a specific application, the pipeline connection information is characterized by a corresponding expression.

[0064] Specifically, based on the expression characterizing the pipeline connection information of the pipeline to be arranged underwater, the server plans the valve station location of the valve station, and then obtains the number of valve stations of the valve station. Since the cost of a single valve station is known, the server can obtain the expression of the valve station cost for setting up the valve station for the compressed air energy storage system based on the number of valve stations of the valve station and the cost of a single valve station.

[0065] In a specific application, the number of valve stations is a variable to be solved, and the valve station cost can be characterized by an expression including variables such as the number of valve stations. For example, the expression of the valve station cost is shown in Formula 2:

[0066] (Formula 2)

[0067] Wherein, is the valve station cost; is the number of valve stations; is the cost of a single valve station.

[0068] Step S306, determine the total pipeline cost of the pipeline according to the pipeline connection information and the cost per unit length of the pipeline.

[0069] Among them, the total pipeline cost is used to characterize the total cost of arranging the pipeline for the compressed air energy storage system.

[0070] Among them, the cost per unit length of the pipeline is determined based on the gas information corresponding to the compressed air energy storage system. The cost per unit length of the pipeline characterizes the cost of each unit length of the pipeline. For example, it is the cost of arranging each unit length of the pipeline for the compressed air energy storage system.

[0071] In a specific application, the gas information at least includes the preset pressure level of the compressed air energy storage system, as well as the gas flow rate and gas flow corresponding to the pipeline.

[0072] Specifically, the server first determines the expression of the pipeline size of the pipeline based on the gas information such as the preset pressure level, the gas flow rate and gas flow corresponding to the pipeline, then determines the expression of the cost per unit length of the pipeline based on the expression of the pipeline size of the pipeline, and further determines the expression of the total pipeline cost of arranging the pipeline for the compressed air energy storage system according to the expression of the cost per unit length of the pipeline and the expression characterizing the pipeline connection information.

[0073] In a specific application, the pipeline connection information is a variable to be solved, and the total pipeline cost can be characterized by an expression including variables such as the pipeline connection information. Further, the pipeline connection information can be characterized by an expression including variables such as the pipeline connection relationship and the pipeline length.

[0074] Step S308: Determine the loss information of the compressed air energy storage system and the standard deviation of the energy storage loss of each gas storage container according to the pipeline connection information and gas information.

[0075] Among them, the loss information is used to characterize the loss caused by pressure loss during the energy storage and energy release processes of the compressed air energy storage system; the standard deviation of the energy storage loss corresponding to each gas storage container is used to characterize the distribution of the losses of each gas storage container.

[0076] Specifically, there will be pressure losses during the energy storage air intake and energy release air discharge of the compressed air energy storage system. The pressure loss is related to the pipeline connection relationship, the length of the pipeline, etc. Therefore, the server determines the expression of the loss information of the compressed air energy storage system during the energy storage and energy release processes based on the expression of the pipeline connection information.

[0077] In specific applications, the loss information can be characterized by an expression containing variables such as pipeline connection information.

[0078] Step S310: Determine the valve cost, valve station cost, and total pipeline cost as the layout cost. Taking the layout cost, loss information, and energy storage loss standard deviation as multiple objectives, determine the target number of valve stations, target valve station locations, and target pipeline connection information of the compressed air energy storage system to obtain the underwater gas storage array layout information of the compressed air energy storage system.

[0079] Among them, the layout cost is used to characterize the construction cost of arranging valves, valve stations, and pipelines for the compressed air energy storage system.

[0080] Specifically, the server combines the valve cost, valve station cost, and total pipeline cost to obtain the layout cost as shown in Formula 3:

[0081] (Formula 3)

[0082] Among them, is the total pipeline cost.

[0083] Then, with the layout cost, loss information, and standard deviation of energy storage loss as multiple objectives, the server solves variables such as the number of valve stations, pipeline connection relationships, and pipeline lengths in the multi-objective optimization function shown in Formula 4 to obtain the target number of valve stations, target pipeline connection relationships, and target pipeline lengths. Among them, the valve station positions are related to the pipeline connection information, and the main pipe interface positions in the pipeline connection information are related to the pipeline connection relationships and pipeline lengths in the pipeline connection information. Therefore, the server can further solve to obtain the target main pipe interface positions and target valve station positions based on the target pipeline connection relationships and target pipeline lengths. The server combines the target main pipe interface positions, target pipeline connection relationships, and target pipeline lengths into target pipeline connection information, and further combines the target number of valve stations, target valve station positions, and target pipeline connection information to obtain the underwater gas storage array layout information.

[0084] (Formula 4)

[0085] Among them, is the loss information; is the standard deviation of energy storage loss.

[0086] Based on the underwater gas storage array layout information, the construction of a compressed air energy storage system as shown in Figure 1 can be completed.

[0087] In this step, by solving the multi-objective optimization function including valve cost, valve station cost, total pipeline cost, and loss information, the optimal number of valve stations, optimal valve station positions, and optimal pipeline connection information with the minimum layout cost of the corresponding underwater gas storage array can be determined, so that the pipeline system layout of the compressed air energy storage system reaches the optimal.

[0088] In the method for determining the underwater gas storage array layout information of the above compressed air energy storage system, the valve cost of the valves to be installed underwater in the compressed air energy storage system is determined according to the number of gas storage containers underwater in the compressed air energy storage system and the cost of a single valve; the compressed air energy storage system includes at least a control platform above water and multiple gas storage containers underwater; there are multiple valves, and each gas storage container corresponds to one valve; according to the pipeline connection information of the pipelines to be arranged underwater in the compressed air energy storage system, the valve station cost of the valve stations to be installed underwater in the compressed air energy storage system is determined; there is at least one valve station, and there is at least one valve in each valve station; the pipeline connection information is used to represent the connection relationship based on pipelines among the control platform, each gas storage container, each valve, and each valve station; according to the pipeline connection information and the unit length cost of the pipeline, the total pipeline cost of the pipeline is determined; the unit length cost of the pipeline is determined based on the gas information corresponding to the compressed air energy storage system; according to the pipeline connection information and the gas information, the loss information of the compressed air energy storage system and the standard deviation of the energy storage loss of each gas storage container are determined; the valve cost, the valve station cost, and the total pipeline cost are determined as the layout cost, and with the layout cost, the loss information, and the standard deviation of the energy storage loss as multiple objectives, the target number of valve stations, the target positions of the valve stations, and the target pipeline connection information of the compressed air energy storage system are determined, and the underwater gas storage array layout information of the compressed air energy storage system is obtained. In this way, based on the valve cost, the valve station cost, the total pipeline cost, the loss information, and the standard deviation of the energy storage loss, the server can, with the layout cost, the loss information, and the standard deviation of the energy storage loss as multiple objectives, determine the target number of valve stations, the target positions of the valve stations, and the target pipeline connection information of the compressed air energy storage system, and then obtain the underwater gas storage array layout information of the compressed air energy storage system. Based on the determined underwater gas storage array layout information, corresponding valves, valve stations, and pipelines can be set underwater for the compressed air energy storage system, thereby realizing the construction of a compressed air energy storage system with multiple gas storage containers, and further improving the energy storage capacity of the compressed air energy storage system.

[0089] In an exemplary embodiment, there are multiple pipelines, and the gas information includes at least the preset pressure level of the compressed air energy storage system, as well as the gas flow rate and gas flow corresponding to different pipelines.

[0090] Among them, the preset pressure level is used to represent the degree of compressing gas in the compressed air energy storage system.

[0091] Among them, the gas flow rate and gas flow are variables for which the final values are obtained through optimization in the process of solving the multi-objective optimization function shown in Formula 4; in practical applications, the server can preset reference values for the gas flow rate and gas flow according to the requirements and limitations of the compressed air energy storage system, and obtain the final values through optimization in the process of solving the multi-objective optimization function shown in Formula 4.

[0092] In a specific application, the pipeline at least includes a first pipeline, a second pipeline, and a third pipeline. The first pipeline is connected to the control platform for the compressed air energy storage system to extend underwater. The second pipeline is used to connect each valve station to the first pipeline, and the third pipeline is used to connect each gas storage container to the corresponding valve.

[0093] In practical applications, the server presets the reference values of the gas flow velocities corresponding to the first pipeline, the second pipeline, and the third pipeline according to the requirements and limitations of the compressed air energy storage system, and presets the reference values of the gas flow rates corresponding to the first pipeline and the third pipeline.

[0094] As Figure 4 shown, the cost per unit length of each pipeline is determined as follows:

[0095] Step S402: For each pipeline, determine the inner diameter of the pipeline according to the gas flow velocity and the reference gas flow rate corresponding to the pipeline, and determine the outer diameter of the pipeline according to the preset pressure grade.

[0096] Step S404: Determine the volume per unit length of the pipeline according to the inner diameter and the outer diameter of the pipeline.

[0097] Step S406: Obtain the cost per unit length of the pipeline according to the volume per unit length of the pipeline, the density of the pipeline material, and the cost per unit mass of the pipeline material.

[0098] Among them, the volume per unit length of the pipeline is used to represent the volume of the pipeline per unit length.

[0099] Among them, the cost per unit mass of the pipeline material is used to represent the cost of the pipeline per unit mass.

[0100] Specifically, for each pipeline, the server first determines the expression of the inner diameter of the pipeline according to the gas flow velocity and the gas flow rate corresponding to the pipeline, and determines the expression of the wall thickness of the pipeline according to the corresponding relationship between the pressure grade and the pipeline wall thickness and the preset pressure grade. Then, based on the expression of the inner diameter of the pipeline and the expression of the wall thickness, the expression of the outer diameter of the pipeline is determined.

[0101] As shown in Formula 5, the expression of the inner diameter of the pipeline is:

[0102] (Formula 5)

[0103] Among them, is the inner diameter of the pipeline; is the gas flow velocity corresponding to the pipeline; is the gas flow rate corresponding to the pipeline.

[0104] As shown in Formula 6, the expression of the outer diameter of the pipeline is:

[0105] (Formula 6)

[0106] Wherein, is the outer diameter of the pipeline; is the wall thickness of the pipeline; In the process of solving the multi-objective optimization function as shown in Formula 4, the server can also solve and obtain the target inner diameter and target outer diameter of each pipeline.

[0107] Next, based on the expressions of the inner diameter and outer diameter of the pipeline, the server determines the expression of the volume per unit length of the pipeline as shown in Formula 7:

[0108] (Formula 7)

[0109] Wherein, is the volume per unit length of the pipeline.

[0110] Next, based on the expression of the volume per unit length of the pipeline, the pipeline material density of the pipeline, and the material cost per unit mass of the pipeline, the server obtains the expression of the cost per unit length of the pipeline as shown in Formula 8:

[0111] (Formula 8)

[0112] Wherein, is the cost per unit length of the pipeline; is the pipeline engineering cost coefficient; is the pipeline material density of the pipeline; is the material cost per unit mass of the pipeline.

[0113] In this embodiment, the server can construct the expression of the size of each pipeline based on the preset pressure level of the compressed air energy storage system and the gas flow velocity and gas flow corresponding to different pipelines, thereby characterizing the cost per unit length of each pipeline.

[0114] In an exemplary embodiment, the pipeline at least includes a first pipeline, a second pipeline, and a third pipeline. The first pipeline is connected to the control platform for the compressed air energy storage system to extend underwater. The second pipeline is used to connect each valve station to the first pipeline. The third pipeline is used to connect each gas storage container to the corresponding valve.

[0115] Refer to Figure 1, each gas storage container needs to be connected to the corresponding valve through the third pipeline; each valve station needs to be connected to the first pipeline through the second pipeline. Further, the valve stations can first be connected to a common second pipeline through their respective corresponding second pipelines, and then be connected to the first pipeline through the common second pipeline, or the valve stations can be directly connected to the first pipeline through the corresponding second pipelines. In specific applications, there is a main pipe interface on the first pipeline, and the second pipeline is connected to the first pipeline through the main pipe interface.

[0116] In the above step S204, according to the pipeline connection information of the pipelines to be arranged underwater in the compressed air energy storage system, determine the valve station cost of the valve stations to be set underwater in the compressed air energy storage system, which specifically includes the following contents: Obtain the valve station cost based on the number of valve stations and the cost of a single valve station under the pipeline connection information.

[0117] Among them, the cost of a single valve station is the cost of setting up a single valve station.

[0118] Specifically, based on the pipeline connection information of the pipelines to be arranged underwater, the server plans the valve station locations of the valve stations, and then obtains the number of valve stations of the valve stations. Since the cost of a single valve station is known, the server can obtain the expression of the valve station cost as shown in Formula 2 based on the number of valve stations of the valve stations and the cost of a single valve station.

[0119] As Figure 5 shown, in the above step S306, according to the pipeline connection information and the unit length cost of the pipelines, determine the total pipeline cost of the pipelines, which specifically includes the following steps:

[0120] Step S502, based on the pipeline lengths of each type of pipeline under the pipeline connection information and the unit length cost of each type of pipeline, obtain the pipeline cost of each type of pipeline.

[0121] Step S504, combine the pipeline costs of each type of pipeline to obtain the total pipeline cost.

[0122] Specifically, for the first pipeline, the server obtains the first pipeline cost of the first pipeline as shown in Formula 9 based on the first pipeline length of the first pipeline and the expression of the unit length cost of the first pipeline:

[0123] (Formula 9)

[0124] Among them, is the first pipeline cost of the first pipeline; is the unit length cost of the first pipeline of the first pipeline; is the first pipeline length of the first pipeline.

[0125] In practical applications, the length of the first pipeline is related to the position of the control platform and the main pipe interface.

[0126] For the second pipeline and the third pipeline, their pipeline lengths are related to the connection relationships of the objects to which the pipelines should be connected.

[0127] For the second pipeline, the objects to which the second pipeline should be connected are valve stations and valve stations, or valve stations and the main pipe interface; the connection relationship between the objects to which the second pipeline should be connected is represented by When it indicates that the objects to be connected are connected, and when it indicates that the objects to be connected are not connected; therefore, based on the expression of the second pipeline length and the unit length cost of the second pipeline of the second pipeline, the server obtains the second pipeline cost of the second pipeline as shown in Formula 10:

[0128] (Formula 10)

[0129] Where, is the second pipeline cost of the second pipeline; is the unit length cost of the second pipeline of the second pipeline; is the number of valve stations, When it represents the th valve station, When it represents the main pipe interface, that is, When it is the th valve station and the th valve station connection relationship, is the th valve station and the th valve station between the second pipeline length, When it is the th valve station and the main pipe interface connection relationship, The th valve station and the main pipe interface between the second pipeline length.

[0130] For the third pipeline, the objects to which the third pipeline should be connected are gas storage containers and valve stations; the connection relationship between the objects to which the third pipeline should be connected is represented by When it indicates that the objects to be connected are connected, and when When it is characterized that the objects to be connected are not connected; therefore, based on the expression of the third pipeline length of the third pipeline and the unit length cost of the third pipeline, the server obtains the third pipeline cost of the third pipeline as shown in Formula 11:

[0131] (Formula 11)

[0132] Among them, is the third pipeline cost of the third pipeline; is the unit length cost of the third pipeline of the third pipeline; is the number of gas storage containers, is the number of valve stations, that is, is the th gas storage container and the th valve station connection relationship, is the th gas storage container and the th valve station third pipeline length.

[0133] In summary, the total pipeline cost is as shown in Formula 12:

[0134] (Formula 12)

[0135] In this embodiment, through the pipeline connection information, the server can plan the position of the valve station and then plan the number of valve stations, so as to characterize the valve station cost. Through the pipeline connection information, the server can also plan the pipeline connection relationship of each pipeline and then plan the pipeline length of each pipeline, so as to characterize the total pipeline cost.

[0136] In an exemplary embodiment, the gas information at least further includes the energy storage gas flow rate of each pipeline during the energy storage of the compressed air energy storage system and the energy release gas flow rate of each pipeline during the energy release of the compressed air energy storage system.

[0137] As Figure 6 shown, the above step S308, according to the pipeline connection information and gas information, determines the loss information of the compressed air energy storage system and the energy storage loss standard deviation of each gas storage container, specifically including the following steps:

[0138] Step S602, for each gas storage container, based on the energy storage gas flow rate and energy release gas flow rate corresponding to each pipeline, and the pipeline length corresponding to each pipeline of the gas storage container under the pipeline connection information, determine the energy storage pressure loss of the gas storage container during the energy storage of the compressed air energy storage system and the energy release pressure loss during the energy release of the compressed air energy storage system.

[0139] Step S604: Determine the loss information based on the energy storage pressure loss and the energy release pressure loss of each gas storage container, and determine the standard deviation of the energy storage loss based on the energy storage pressure loss of each gas storage container.

[0140] Among them, the energy storage pressure loss of each gas storage container is used to characterize the pressure loss of the gas during the process from the compression device to the gas storage container when the compressed air energy storage system stores energy; the energy release pressure loss of each gas storage container is used to characterize the pressure loss of the gas during the process from the gas storage container to the expansion device when the compressed air energy storage system releases energy.

[0141] Specifically, there will be pressure losses during both the energy storage air intake and the energy release air discharge processes of the compressed air energy storage system. These pressure losses are related to the path that the gas flows through (the gas needs to flow through various pipelines, valves, and gas storage containers), the distance that the gas flows through (the pipeline lengths of the various pipelines that the gas flows through), and the flow velocity of the gas when it flows.

[0142] Therefore, the pressure losses are divided into the losses of the gas in the first pipeline, in the second pipeline, in the third pipeline, the losses when flowing through the valve, and the losses when flowing through the gas storage container inlet.

[0143] As shown in Formula 13, the expression of the energy storage pressure loss of each gas storage container is:

[0144] (Formula 13)

[0145] Among them, is the energy storage pressure loss of the th gas storage container; is the density of the gas.

[0146] is the friction factor of the first pipeline, is the length of the first pipeline, is the inner diameter of the first pipeline, is the flow velocity of the energy storage gas corresponding to the first pipeline.

[0147] is the friction factor of the second pipeline, is the th gas storage container's second pipeline length corresponding to the second pipeline under the pipeline connection information, that is, the second pipeline length of the second pipeline between the valve station connected to the th gas storage container and the first pipeline, is the inner diameter of the second pipeline, is the flow velocity of the energy storage gas corresponding to the second pipeline.

[0148] is the friction pressure loss coefficient of the third pipeline, is the length of the third pipeline corresponding to the third pipeline for the th gas storage container under the pipeline connection information, that is, the length of the third pipeline between the th gas storage container and the connected valve station, is the inner diameter of the third pipeline,

[0149] is the valve pressure loss coefficient of the valve; is the container inlet pressure loss coefficient of the gas storage container.

[0150] Among them, the friction pressure loss coefficient is used to characterize the degree of pressure loss when the gas flows through the corresponding pipeline and is related to the roughness of the pipeline; the valve resistance loss coefficient is used to characterize the degree of pressure loss when the gas flows through the valve and is related to the structure and roughness of the valve; the container inlet pressure loss coefficient is used to characterize the degree of pressure loss when the gas flows through the inlet of the gas storage container and is related to the structure and roughness of the inlet of the gas storage container.

[0151] Similarly, as shown in Formula 14 is the expression of the energy release pressure loss of each gas storage container:

[0152] (Formula 14)

[0153] Among them, is the energy release pressure loss of the th gas storage container; is the energy release gas flow rate corresponding to the first pipeline; is the energy release gas flow rate corresponding to the second pipeline;

[0154] Finally, the server determines the loss information of the compressed air energy storage system based on the energy storage pressure loss and energy release pressure loss of each gas storage container.

[0155] In a specific application, since there is energy storage pressure loss in the compressed air energy storage system during energy storage, the compression equipment needs to consume additional power, thereby consuming additional electric energy. Therefore, the server can determine the additional electric energy consumed or the electricity cost of the compressed air energy storage system based on the energy storage pressure loss of each gas storage container. Similarly, since there is energy release pressure loss in the compressed air energy storage system during energy release, the power generation capacity of the expansion equipment decreases and there is electric energy loss. Therefore, the server can determine the electric energy loss or power generation revenue of the compressed air energy storage system based on the energy release pressure loss of each gas storage container. Then, the server obtains the loss information of the compressed air energy storage system based on the above-mentioned additional consumed electric energy or electricity cost and the lost electric energy or power generation revenue.

[0156] In addition, in order to ensure that the pressure losses of all gas storage containers are close and avoid excessive or too small pressure in local gas storage containers, the server determines the standard deviation of energy storage loss during energy storage of the compressed air energy storage system based on the energy storage pressure loss of each gas storage container. The expression of the standard deviation of energy storage loss is shown in Formula 15:

[0157] (Formula 15)

[0158] Wherein, is the standard deviation of energy storage loss.

[0159] In this embodiment, based on the path through which the gas flows (the gas needs to flow through various pipelines, valves, and gas storage containers), the distance the gas flows (the pipeline lengths of the pipelines it flows through), and the flow velocity of the gas when flowing, the server can obtain the energy storage pressure loss and energy release pressure loss corresponding to each gas storage container, and further can characterize the loss information of the compressed air energy storage system and measure the distribution of the energy storage pressure loss of each gas storage container.

[0160] In an exemplary embodiment, as Figure 7 shown, the above step S604, determining the loss information based on the energy storage pressure loss and energy release pressure loss of each gas storage container, specifically includes the following steps:

[0161] Step S702, determining the energy storage loss cost during energy storage of the compressed air energy storage system based on the energy storage pressure loss of each gas storage container, and determining the energy release loss revenue during energy release of the compressed air energy storage system based on the energy release pressure loss of each gas storage container.

[0162] Step S704, combining the energy storage loss cost and the energy release loss revenue to obtain the loss information.

[0163] Wherein, the energy storage loss cost is used to characterize the additional electricity cost consumed by the compressed air energy storage system due to the energy storage pressure loss of each gas storage container.

[0164] Among them, the energy release loss benefit is used to characterize the power generation benefit lost by the compressed air energy storage system due to the energy release pressure loss of each gas storage container.

[0165] Specifically, the server calculates the additional power consumption cost of the compressed air energy storage system due to the energy storage pressure loss of each gas storage container according to the energy storage pressure loss of each gas storage container and the power consumption cost function of the compressed air energy storage system, and obtains the energy storage loss cost; the expression of the energy storage loss cost is shown in Formula 16:

[0166] (Formula 16)

[0167] Among them, is the energy storage loss cost; is the power consumption cost function of the compressed air energy storage system.

[0168] Similarly, the server calculates the power generation benefit lost by the compressed air energy storage system due to the energy release pressure loss of each gas storage container according to the energy release pressure loss of each gas storage container and the power generation benefit function of the compressed air energy storage system, and obtains the energy release loss benefit; the expression of the energy release loss benefit is shown in Formula 17:

[0169] (Formula 17)

[0170] Among them, is the energy release loss benefit; is the power generation benefit function of the compressed air energy storage system.

[0171] Finally, the server combines the above energy storage loss cost and energy release loss benefit to obtain the loss information shown in Formula 18:

[0172] (Formula 18)

[0173] In this embodiment, based on the energy storage pressure loss of each gas storage container, the server can measure the additional power consumption cost generated by the compressed air energy storage system during energy storage. Based on the energy release pressure loss of each gas storage container, the server can measure the power generation benefit lost by the compressed air energy storage system during energy release. Based on the above additional power consumption cost and lost power generation benefit, the server can characterize the loss of the compressed air energy storage system.

[0174] In an exemplary embodiment, the steps in step S312 above determine the target number of valve stations, the target positions of valve stations, and the target pipeline connection information of the compressed air energy storage system with the layout cost, loss information, and the standard deviation of energy storage loss as multiple objectives, specifically including the following information: taking the one-to-one correspondence between each gas storage container and each valve, the distance between each gas storage container and the valve station to which the corresponding valve belongs as constraints, and the connection relationship between each valve station and the first pipeline, with the layout cost, loss information, and the standard deviation of energy storage loss as multiple objectives.

[0175] Among them, the connection relationship between each valve station and the first pipeline includes an indirect connection relationship and a direct connection relationship. The indirect connection relationship means that the valve station first connects to a common second pipeline through their respective corresponding second pipelines, and then connects to the first pipeline through this common second pipeline. The direct connection relationship means that the valve station directly connects to the first pipeline through the corresponding second pipeline.

[0176] Specifically, the server takes the one-to-one correspondence between each gas storage container and each valve as a constraint condition, that is, each gas storage container can only be connected to one valve, and one valve can also only be connected to one gas storage container, and takes the distance between each gas storage container and the valve station to which the corresponding valve belongs as a constraint condition, that is, the distance between each gas storage container and the valve station to which the corresponding valve belongs needs to be less than the distance threshold. Also, taking the connection relationship between each valve station and the first pipeline, that is, the valve station needs to first connect to a common second pipeline through their respective corresponding second pipelines, and then connect to the first pipeline through this common second pipeline, or directly connect to the first pipeline through the corresponding second pipeline as a constraint condition, to solve variables such as the number of valve stations, pipeline connection relationships, and pipeline lengths in the multi-objective optimization function shown in Formula 4, and obtain the target number of valve stations, the target positions of valve stations, and the target pipeline connection information, and further obtain the underwater gas storage array layout information.

[0177] In a specific application, the server uses a multi-objective optimization algorithm, such as the fruit fly algorithm, particle swarm algorithm, etc., to perform optimization iterative calculations on the multi-objective optimization function shown in Formula 4 to obtain the target number of valve stations, the target positions of valve stations, and the target pipeline connection information.

[0178] In this embodiment, the server takes the one-to-one correspondence between each gas storage container and each valve, the distance between each gas storage container and the valve station to which the corresponding valve belongs, and the connection relationship between each valve station and the first pipeline as constraint conditions, which can reasonably constrain the solution process and results of the multi-objective optimization function shown in Formula 4, thereby improving the reliability of the determined underwater gas storage array layout information.

[0179] In an exemplary embodiment, as Figure 8As shown, another method for determining the underwater gas storage array arrangement information of a compressed air energy storage system is provided. Taking the application of this method to a server as an example, it includes the following steps:

[0180] Step S802: For each type of pipeline, based on the gas flow velocity and gas flow rate corresponding to the pipeline, determine the inner diameter of the pipeline, and, according to the preset pressure level, determine the outer diameter of the pipeline.

[0181] Step S804: Determine the volume per unit length of the pipeline based on the inner diameter and outer diameter of the pipeline.

[0182] Step S806: Based on the volume per unit length of the pipeline, the density of the pipeline material, and the cost per unit mass of the pipeline material, obtain the cost per unit length of the pipeline.

[0183] Step S808: Based on the number of gas storage containers underwater in the compressed air energy storage system and the cost of a single valve, determine the valve cost of the valves to be set underwater in the compressed air energy storage system.

[0184] Step S810: Based on the number of valve stations and the cost of a single valve station under the pipeline connection information, obtain the valve station cost.

[0185] Step S812: Based on the pipeline length of each type of pipeline under the pipeline connection information and the cost per unit length of each type of pipeline, obtain the pipeline cost of each type of pipeline, and combine the pipeline costs of each type of pipeline to obtain the total pipeline cost.

[0186] Step S814: For each gas storage container, based on the energy storage gas flow velocity of each type of pipeline during energy storage of the compressed air energy storage system, the energy release gas flow velocity of each type of pipeline during energy release of the compressed air energy storage system, and the pipeline length corresponding to each type of pipeline for the gas storage container under the pipeline connection information, determine the energy storage pressure loss of the gas storage container during energy storage of the compressed air energy storage system and the energy release pressure loss during energy release of the compressed air energy storage system.

[0187] Step S816: Based on the energy storage pressure loss of each gas storage container, determine the energy storage loss cost during energy storage of the compressed air energy storage system. Based on the energy release pressure loss of each gas storage container, determine the energy release loss benefit during energy release of the compressed air energy storage system. Based on the energy storage pressure losses of each gas storage container, determine the energy storage loss standard deviation of each gas storage container.

[0188] Step S818: Combine the energy storage loss cost and the energy release loss benefit to obtain the loss information.

[0189] Step S820: Combine the valve cost, the valve station cost, and the total pipeline cost to obtain the arrangement cost.

[0190] Step S822: Taking the one-to-one correspondence between each gas storage container and each valve, the distance between each gas storage container and the valve station to which the corresponding valve belongs, and the connection relationship between each valve station and the first pipeline as constraint conditions, and taking the layout cost, loss information, and standard deviation of energy storage loss as multi-objectives, determine the number of target valve stations, the positions of target valve stations, and the target pipeline connection information.

[0191] In this embodiment, taking the layout cost, loss information, and standard deviation of energy storage loss as multi-objectives, and taking the one-to-one correspondence between each gas storage container and each valve, the distance between each gas storage container and the valve station to which the corresponding valve belongs, and the connection relationship between each valve station and the first pipeline as constraint conditions, it is possible to determine the number of target valve stations, the positions of target valve stations, and the target pipeline connection information of the compressed air energy storage system, and further obtain the underwater gas storage array layout information of the compressed air energy storage system. Based on the determined underwater gas storage array layout information, corresponding valves, valve stations, and pipelines can be set for the compressed air energy storage system underwater, thereby realizing the construction of a compressed air energy storage system with multiple gas storage containers, and further improving the energy storage capacity of the compressed air energy storage system.

[0192] To more clearly illustrate the method for determining the underwater gas storage array layout information of the compressed air energy storage system provided by the embodiments of the present application, the following uses a specific embodiment to specifically describe the method for determining the underwater gas storage array layout information of the compressed air energy storage system. However, it should be understood that the embodiments of the present application are not limited thereto. In one exemplary embodiment, the present application also provides an optimization method for an underwater compressed air energy storage gas storage array system, which specifically includes the following steps:

[0193] 1. The underwater compressed air energy storage gas storage array system includes a control platform on the water and a gas storage array underwater. The gas storage array is composed of multiple gas storage balloons; the server obtains the three-dimensional positions of each gas storage balloon in the gas storage array.

[0194] 2. Valves, valve stations, and pipelines need to be set in the underwater compressed air energy storage gas storage array system; among them, the pipelines include a first pipeline connecting the control platform for the system to extend underwater, a second pipeline connecting the valve station and the first pipeline, and a third pipeline connecting the gas storage balloon and the valve station; among them, each gas storage balloon corresponds to one valve, and there is at least one valve in each valve station.

[0195] 3. The server determines the size of each type of pipeline according to the gas flow rate and gas flow of different pipelines and the preset pressure level of the system, thereby determining the unit length cost of each type of pipeline; the expression of the unit length cost of each type of pipeline is shown in Formulas 5, 6, 7, and 8.

[0196] 4. The server determines the valve cost according to the number of gas storage air bags; the expression of the valve cost is as shown in Formula 1.

[0197] 5. The server determines the valve station cost, the total pipeline cost, the loss information, and the standard deviation of energy storage loss according to the pipeline connection information; among them, the expression of the valve station cost is as shown in Formula 2, and the expressions of the total pipeline cost are as shown in Formulas 9, 10, 11, and 12; the expression of the standard deviation of energy storage loss is as shown in Formula 15; the expressions of the loss information are as shown in Formulas 13, 14, 16, 17, and 18.

[0198] 6. The server constructs a multi-objective optimization function for the underwater gas storage array based on the valve cost, the valve station cost, the total pipeline cost, the loss information, and the standard deviation of energy storage loss; the multi-objective optimization function is as shown in Formula 4.

[0199] 7. The server takes the one-to-one correspondence relationship between each gas storage container and each valve as a constraint condition, that is, each gas storage container can only be connected to one valve, and one valve can also only be connected to one gas storage container, and takes the distance between each gas storage container and the valve station to which the corresponding valve belongs as a constraint condition, that is, the distance between each gas storage container and the valve station to which the corresponding valve belongs needs to be less than the distance threshold, and takes the connection relationship between each valve station and the first pipeline, that is, the valve station needs to first connect a common second pipeline through their respective corresponding second pipelines, and then connect to the first pipeline through the common second pipeline, or directly connect to the first pipeline through the corresponding second pipeline as a constraint condition, and uses a multi-objective optimization algorithm, such as the fruit fly algorithm, the particle swarm algorithm, etc., to perform optimization iteration calculations on the multi-objective optimization function, and solves to obtain the optimal number of valve stations, the optimal positions of valve stations, and the optimal pipeline connection information, and further obtains the optimal layout information of the underwater gas storage array.

[0200] In this embodiment, based on the multi-objective optimization function constructed according to the valve cost, the valve station cost, the total pipeline cost, the loss information, and the standard deviation of energy storage loss, the server can solve to obtain the optimal number of valve stations, the optimal positions of valve stations, and the optimal pipeline connection information, and further obtain the optimal layout information of the underwater gas storage array, so as to achieve the optimal layout of the system while considering the energy storage efficiency and economic benefits.

[0201] It should be understood that although the steps in the flowcharts involved in the above-described embodiments are sequentially shown according to the indications of the arrows, these steps are not necessarily executed in the order indicated by the arrows. Unless there is a clear indication in this article, there is no strict order limit for the execution of these steps, and these steps can be executed in other orders. Moreover, at least a part of the steps in the flowcharts involved in the above-described embodiments may include multiple steps or multiple stages. These steps or stages are not necessarily executed at the same time, but can be executed at different times. The execution order of these steps or stages is not necessarily sequential, but can be executed alternately or in turn with at least a part of other steps or steps or stages in other steps.

[0202] Based on the same inventive concept, an embodiment of the present application further provides a device for determining the underwater gas storage array layout information of a compressed air energy storage system for implementing the method for determining the underwater gas storage array layout information of the compressed air energy storage system involved above. The implementation solutions provided by this device to solve problems are similar to the implementation solutions recorded in the above method. Therefore, the specific limitations in one or more embodiments of the device for determining the underwater gas storage array layout information of the compressed air energy storage system provided below can refer to the limitations on the method for determining the underwater gas storage array layout information of the compressed air energy storage system in the above text, and will not be repeated here.

[0203] In an exemplary embodiment, as Figure 9 shown, a device for determining the underwater gas storage array layout information of a compressed air energy storage system is provided, including: a valve cost determination module 902, a valve station cost determination module 904, a total pipeline cost determination module 906, a loss information determination module 908, an underwater gas storage array layout cost determination module 910, and an underwater gas storage array layout information determination module 912, where:

[0204] The valve cost determination module 902 is used to determine the valve cost of the valves to be installed underwater in the compressed air energy storage system according to the number of gas storage containers underwater in the compressed air energy storage system and the cost of a single valve; the compressed air energy storage system includes at least a control platform above water and multiple gas storage containers underwater; there are multiple valves, and each gas storage container corresponds to one valve.

[0205] The valve station cost determination module 904 is used to determine the valve station cost of the valve stations to be installed underwater in the compressed air energy storage system according to the pipeline connection information of the pipelines to be arranged underwater in the compressed air energy storage system; there is at least one valve station, and there is at least one valve in each valve station; the pipeline connection information is used to characterize the connection relationship based on pipelines among the control platform, each gas storage container, each valve, and each valve station.

[0206] The total pipeline cost determination module 906 is configured to determine the total pipeline cost of the pipeline according to the pipeline connection information and the unit length cost of the pipeline. The unit length cost of the pipeline is determined based on the gas information corresponding to the compressed air energy storage system.

[0207] The loss information determination module 908 is configured to determine the loss information of the compressed air energy storage system and the standard deviation of the energy storage loss of each gas storage container according to the pipeline connection information and the gas information.

[0208] The arrangement information determination module 910 is configured to determine the valve cost, the valve station cost, and the total pipeline cost as the arrangement cost, and determine the target number of valve stations, the target positions of the valve stations, and the target pipeline connection information of the compressed air energy storage system with the arrangement cost, the loss information, and the standard deviation of the energy storage loss as multiple objectives, so as to obtain the underwater gas storage array arrangement information of the compressed air energy storage system.

[0209] In an exemplary embodiment, there are multiple types of pipelines, and the gas information at least includes the preset pressure level of the compressed air energy storage system, as well as the gas flow velocity and gas flow rate corresponding to different pipelines.

[0210] The underwater gas storage array arrangement information determination device of the compressed air energy storage system further includes a unit length cost determination module, which is configured to, for each type of pipeline, determine the inner diameter of the pipeline according to the gas flow velocity and gas flow rate corresponding to the pipeline, and determine the outer diameter of the pipeline according to the preset pressure level; determine the unit length volume of the pipeline according to the inner diameter and outer diameter of the pipeline; and obtain the unit length cost of the pipeline according to the unit length volume of the pipeline, the density of the pipeline material, and the unit mass material cost of the pipeline.

[0211] In an exemplary embodiment, the pipeline at least includes a first pipeline, a second pipeline, and a third pipeline. The first pipeline is connected to the control platform for the compressed air energy storage system to extend underwater. The second pipeline is used to connect each valve station to the first pipeline. The third pipeline is used to connect each gas storage container to the corresponding valve.

[0212] The valve station cost determination module 904 is further configured to obtain the valve station cost based on the number of valve stations and the cost of a single valve station under the pipeline connection information.

[0213] The total pipeline cost determination module 906 is further configured to obtain the pipeline cost of each type of pipeline based on the pipeline length of each type of pipeline under the pipeline connection information and the unit length cost of each type of pipeline; and combine the pipeline costs of each type of pipeline to obtain the total pipeline cost.

[0214] In an exemplary embodiment, the gas information at least further includes the energy storage gas flow velocity of each type of pipeline during the energy storage of the compressed air energy storage system, and the energy release gas flow velocity of each type of pipeline during the energy release of the compressed air energy storage system.

[0215] The loss information determination module 908 is further configured to, for each gas storage container, determine the energy storage pressure loss during energy storage of the compressed air energy storage system and the energy release pressure loss during energy release of the compressed air energy storage system based on the energy storage gas flow rate and the energy release gas flow rate corresponding to each pipeline, and the pipeline length corresponding to each pipeline of the gas storage container under the pipeline connection information; determine the loss information based on the energy storage pressure loss and the energy release pressure loss of each gas storage container, and determine the standard deviation of the energy storage loss based on the energy storage pressure loss of each gas storage container.

[0216] In an exemplary embodiment, the loss information determination module 908 is further configured to determine the energy storage loss cost during energy storage of the compressed air energy storage system based on the energy storage pressure loss of each gas storage container, and determine the energy release loss benefit during energy release of the compressed air energy storage system based on the energy release pressure loss of each gas storage container; combine the energy storage loss cost and the energy release loss benefit to obtain the loss information.

[0217] In an exemplary embodiment, the arrangement information determination module 910 is further configured to use the one-to-one correspondence between each gas storage container and each valve, the distance between each gas storage container and the valve station to which the corresponding valve belongs, and the connection relationship between each valve station and the first pipeline as constraint conditions, and use the arrangement cost, the loss information, and the standard deviation of the energy storage loss as multiple objectives to determine the number of target valve stations, the positions of the target valve stations, and the target pipeline connection information.

[0218] Each module in the underwater gas storage array arrangement information determination device of the above compressed air energy storage system can be implemented in whole or in part by software, hardware, and their combination. The above modules can be embedded in the processor of the computer device in hardware form or independent of it, or stored in the memory of the computer device in software form, so that the processor can call and execute the operations corresponding to the above modules.

[0219] Based on the same inventive concept, the embodiment of the present application also provides a compressed air energy storage system built based on the underwater gas storage array arrangement information determined by the underwater gas storage array arrangement information determination method related to the above. The implementation solutions provided by this system to solve problems are similar to the implementation solutions recorded in the above method. Therefore, the specific limitations in one or more compressed air energy storage system embodiments provided below can refer to the limitations on the underwater gas storage array arrangement information determination method of the compressed air energy storage system in the above, and will not be repeated here.

[0220] In an exemplary embodiment, as Figure 1 and Figure 2 shown, a compressed air energy storage system is provided, including:

[0221] A control platform 100 located on the water surface is used to control a compressed air energy storage system.

[0222] In a specific application, the control platform includes a compression device and an expansion device. The compression device is used to compress gas into a gas storage container by electric energy during energy storage, and the expansion device is used to release the compressed gas in the gas storage container and use it for power generation during energy release.

[0223] A plurality of gas storage containers 200 located underwater, each gas storage container 200 is used to store compressed gas.

[0224] In a specific application, the gas storage container 200 is a gas storage balloon. In actual applications, the heights of the gas storage containers 200 are the same.

[0225] A plurality of valves 300 located underwater, each valve 300 corresponds to a gas storage container 200, and each valve 300 is used to control the intake and exhaust of the corresponding gas storage container 200.

[0226] In a specific application, the valve operating power supply is connected to the valve station through a power supply cable, and the power is distributed to each valve.

[0227] In a specific application, the valve station 400 is of a closed structure to reduce the influence of the underwater environment on the valves. In actual applications, the valve station 400 is a cabin made of stainless steel, and O-ring seals are provided at the places where pipelines and cables are connected to ensure sealing.

[0228] At least one valve station 400 located underwater, each valve station 400 has at least one valve 300, and each valve station 400 is used to control the valves 300 in the valve station 400.

[0229] A pipeline 500 located underwater is used to connect the control platform 100, each gas storage container 200, each valve 300, and each valve station 400.

[0230] In a specific application, the pipeline 500 includes at least a first pipeline 520 connected to the control platform 100 for the compressed air energy storage system to extend underwater, a second pipeline 540 connecting each valve station 400 and the first pipeline 520, and a third pipeline 560 for connecting each gas storage container 200 and the corresponding valve 300. That is, referring to Figure 1 , each gas storage container 200 needs to be connected to the corresponding valve 300 through the third pipeline 560; each valve station 400 needs to be connected to the first pipeline 520 through the second pipeline 540. Further, the valve stations 400 can first be connected to a common second pipeline 540 through their respective corresponding second pipelines 540, and then connected to the first pipeline 520 through the common second pipeline 540, or the valve stations 400 are directly connected to the first pipeline 520 through the corresponding second pipelines 540.

[0231] In a specific application, there is a main pipe interface 522 on the first pipe 520, and the second pipe 540 is connected to the first pipe 520 through the main pipe interface 522.

[0232] In actual application, the number of the first pipes 520 is one.

[0233] In an exemplary embodiment, a computer device is provided. The computer device can be a server, and its internal structure diagram can be as Figure 10 shown. The computer device includes a processor, a memory, an input / output interface (Input / Output, abbreviated as I / O), and a communication interface. Among them, the processor, the memory, and the input / output interface are connected through a system bus, and the communication interface is connected to the system bus through the input / output interface. Among them, the processor of the computer device is used to provide computing and control capabilities. The memory of the computer device includes a non-volatile storage medium and an internal memory. The non-volatile storage medium stores an operating system, a computer program, and a database. The internal memory provides an environment for the operation of the operating system and the computer program in the non-volatile storage medium. The database of the computer device is used to store the underwater gas storage array arrangement information of the compressed air energy storage system. The input / output interface of the computer device is used to exchange information between the processor and external devices. The communication interface of the computer device is used to communicate with an external terminal through a network connection. When the computer program is executed by the processor, it realizes a method for determining the underwater gas storage array arrangement information of a compressed air energy storage system.

[0234] Those skilled in the art can understand that Figure 10 the structure shown in

[0235] is only a block diagram of some structures related to the solution of the present application, and does not constitute a limitation on the computer device to which the solution of the present application is applied. The specific computer device may include more or fewer components than those shown in the figure, or combine some components, or have different component arrangements.

[0236] In an exemplary embodiment, a computer device is further provided, including a memory and a processor. A computer program is stored in the memory, and when the processor executes the computer program, the steps in the above method embodiments are realized.

[0237] In an exemplary embodiment, a computer-readable storage medium is provided, on which a computer program is stored. When the computer program is executed by the processor, the steps in the above method embodiments are realized.

[0238] Those of ordinary skill in the art can understand that all or part of the processes in the methods of the above embodiments can be completed by instructing relevant hardware through a computer program. The computer program can be stored in a non-volatile computer-readable storage medium. When the computer program is executed, it can include the processes of the embodiments of the above methods. Among them, any reference to a memory, database, or other medium used in the embodiments provided in the present application can include at least one of non-volatile memory and volatile memory. Non-volatile memory can include read-only memory (ROM), magnetic tape, floppy disk, flash memory, optical memory, high-density embedded non-volatile memory, resistive random access memory (ReRAM), magnetoresistive random access memory (MRAM), ferroelectric random access memory (FRAM), phase change memory (PCM), graphene memory, etc. Volatile memory can include random access memory (RAM) or external cache memory, etc. By way of illustration and not limitation, RAM can be in various forms, such as static random access memory (SRAM) or dynamic random access memory (DRAM), etc. The databases involved in the embodiments provided in the present application can include at least one of relational databases and non-relational databases. Non-relational databases can include distributed databases based on blockchain, etc., without limitation. The processors involved in the embodiments provided in the present application can be general-purpose processors, central processing units, graphics processing units, digital signal processors, programmable logic devices, data processing logics based on quantum computing, artificial intelligence (AI) processors, etc., without limitation.

[0239] The technical features of the above embodiments can be combined arbitrarily. For the sake of concise description, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, it should be considered as the scope recorded in the present application.

[0240] The above-described embodiments merely represent several implementation manners of the present application. The description is relatively specific and detailed, but it should not be construed as a limitation to the patent scope of the present application. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present application, several modifications and improvements can still be made, and these all fall within the protection scope of the present application. Therefore, the protection scope of the present application shall be subject to the appended claims.

Claims

1. A method for determining the arrangement information of an underwater gas storage array in a compressed air energy storage system, characterized in that, The method includes: Determining the valve cost of the valves to be arranged underwater in the compressed air energy storage system according to the number of gas storage containers underwater in the compressed air energy storage system and the cost of a single valve; the compressed air energy storage system includes at least a control platform above water and multiple gas storage containers underwater; the valves are multiple, and each gas storage container corresponds to one valve; Determining the valve station cost of the valve stations to be arranged underwater in the compressed air energy storage system according to the pipeline connection information of the pipelines to be arranged underwater in the compressed air energy storage system; there is at least one valve station, and there is at least one valve in each valve station; the pipeline connection information is used to characterize the connection relationship based on the pipelines among the control platform, each gas storage container, each valve, and each valve station; Determining the total pipeline cost of the pipelines according to the pipeline connection information and the unit length cost of the pipelines; the unit length cost of the pipelines is determined based on the gas information corresponding to the compressed air energy storage system; Determining the loss information of the compressed air energy storage system and the standard deviation of the energy storage loss of each gas storage container according to the pipeline connection information and the gas information; Determining the arrangement cost by taking the valve cost, the valve station cost, and the total pipeline cost as the arrangement cost, and taking the arrangement cost, the loss information, and the standard deviation of the energy storage loss as multiple objectives, determining the target number of valve stations, the target positions of the valve stations, and the target pipeline connection information of the compressed air energy storage system, so as to obtain the underwater gas storage array arrangement information of the compressed air energy storage system.

2. The method according to claim 1, characterized in that, There are multiple types of pipelines, and the gas information at least includes the preset pressure level of the compressed air energy storage system, as well as the gas flow velocity and gas flow rate corresponding to different pipelines; The unit length cost of each type of pipeline is determined by the following method: For each type of pipeline, determining the inner diameter of the pipeline according to the gas flow velocity and gas flow rate corresponding to the pipeline, and determining the outer diameter of the pipeline according to the preset pressure level; Determining the unit length volume of the pipeline according to the inner diameter and outer diameter of the pipeline; Obtaining the unit length cost of the pipeline according to the unit length volume of the pipeline, the density of the pipeline material of the pipeline, and the unit mass material cost of the pipeline.

3. The method according to claim 2, wherein The gas information at least further includes the energy storage gas flow velocity of each type of pipeline during energy storage in the compressed air energy storage system, and the energy release gas flow velocity of each type of pipeline during energy release in the compressed air energy storage system; The determining the loss information of the compressed air energy storage system and the standard deviation of the energy storage loss of each gas storage container according to the pipeline connection information and the gas information includes: For each gas storage container, based on the energy storage gas flow velocity and energy release gas flow velocity corresponding to each type of pipeline, and the pipeline length of each type of pipeline corresponding to the gas storage container under the pipeline connection information, determining the energy storage pressure loss of the gas storage container during energy storage in the compressed air energy storage system and the energy release pressure loss during energy release in the compressed air energy storage system; Determine the loss information based on the energy storage pressure loss and the energy release pressure loss of each gas storage container, and determine the standard deviation of the energy storage loss based on the energy storage pressure loss of each gas storage container.

4. The method according to claim 3, characterized in that, The determining the loss information based on the energy storage pressure loss and the energy release pressure loss of each gas storage container includes: Determine the energy storage loss cost during energy storage of the compressed air energy storage system based on the energy storage pressure loss of each gas storage container, and determine the energy release loss benefit during energy release of the compressed air energy storage system based on the energy release pressure loss of each gas storage container; Combine the energy storage loss cost and the energy release loss benefit to obtain the loss information.

5. The method according to any one of claims 1 to 4, characterized in that, The pipeline at least includes a first pipeline, a second pipeline, and a third pipeline. The first pipeline is connected to the control platform for the compressed air energy storage system to extend underwater. The second pipeline is used to connect each valve station to the first pipeline. The third pipeline is used to connect each gas storage container to the corresponding valve; The determining the valve station cost of the compressed air energy storage system to be arranged underwater according to the pipeline connection information of the pipeline of the compressed air energy storage system to be arranged underwater includes: Obtain the valve station cost based on the number of valve stations and the cost of a single valve station under the pipeline connection information; The determining the total pipeline cost of the pipeline according to the pipeline connection information and the unit length cost of the pipeline includes: Obtain the pipeline cost of each type of pipeline based on the pipeline length of each type of pipeline under the pipeline connection information and the unit length cost of each type of pipeline; Combine the pipeline costs of each type of pipeline to obtain the total pipeline cost.

6. The method according to claim 5, wherein Taking the layout cost, the loss information, and the standard deviation of the energy storage loss as multiple objectives, determine the target number of valve stations, the target positions of the valve stations, and the target pipeline connection information of the compressed air energy storage system, including: Taking the one-to-one correspondence between each gas storage container and each valve, the distance between each gas storage container and the valve station to which the corresponding valve belongs, and the connection relationship between each valve station and the first pipeline as constraint conditions, and taking the layout cost, the loss information, and the standard deviation of the energy storage loss as multiple objectives, determine the target number of valve stations, the target positions of the valve stations, and the target pipeline connection information.

7. An underwater gas storage array layout information determination device for a compressed air energy storage system, characterized in that, The device includes: A determining module for valve cost, configured to determine the valve cost of the valves of the compressed air energy storage system to be arranged underwater according to the number of gas storage containers of the compressed air energy storage system underwater and the cost of a single valve; the compressed air energy storage system at least includes a control platform on the water and multiple gas storage containers underwater; there are multiple valves, and each gas storage container corresponds to one valve; The valve station cost determination module is used to determine the valve station cost of the valve stations to be arranged underwater in the compressed air energy storage system according to the pipeline connection information of the pipelines to be arranged underwater in the compressed air energy storage system; there is at least one valve station, and there is at least one valve in each valve station; the pipeline connection information is used to characterize the connection relationship based on the pipelines among the control platform, each gas storage container, each valve, and each valve station; The total pipeline cost determination module is used to determine the total pipeline cost of the pipeline according to the pipeline connection information and the unit length cost of the pipeline; the unit length cost of the pipeline is determined based on the gas information corresponding to the compressed air energy storage system; The loss information determination module is used to determine the loss information of the compressed air energy storage system and the energy storage loss standard deviation of each gas storage container according to the pipeline connection information and the gas information; The arrangement information determination module is used to determine the valve cost, the valve station cost, and the total pipeline cost as the arrangement cost, and taking the arrangement cost, the loss information, and the energy storage loss standard deviation as multiple objectives, determine the target number of valve stations, the target positions of the valve stations, and the target pipeline connection information of the compressed air energy storage system, so as to obtain the underwater gas storage array arrangement information of the compressed air energy storage system.

8. A compressed air energy storage system, characterized in that, The underwater gas storage array arrangement information of the compressed air energy storage system is determined by the method for determining the underwater gas storage array arrangement information of the compressed air energy storage system according to any one of claims 1 to 6, and the system includes: A control platform located above the water, which is used to control the compressed air energy storage system; A plurality of gas storage containers located underwater, and each gas storage container is used to store compressed gas; A plurality of valves located underwater, each valve corresponds to a gas storage container, and each valve is used to control the intake and exhaust of the corresponding gas storage container; At least one valve station located underwater, there is at least one valve in each valve station, and each valve station is used to control the valves in the valve station; Pipelines located underwater, which are used to connect the control platform, each gas storage container, each valve, and each valve station.

9. A computer device, comprising a memory and a processor, the memory storing a computer program, characterized in that, When the processor executes the computer program, it implements the steps of the method according to any one of claims 1 to 6.

10. A computer-readable storage medium having a computer program stored thereon, characterized in that, When the computer program is executed by the processor, it implements the steps of the method according to any one of claims 1 to 6.

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