Water conservancy hub system operation method based on pumped compressed air energy storage

Abstract

This application relates to the field of new energy technology, and in particular to an operation method for a water conservancy hub system based on pumped-storage compressed air energy storage. The method includes: sequentially injecting treated air of a first target state into the first and second compression-side water-air co-containment chambers of the water conservancy hub; while injecting air into the second compression-side water-air co-containment chamber, emptying the air from the first compression-side water-air co-containment chamber and injecting water to complete pressurized water energy storage; injecting water into the first and second expansion-side water-air co-containment chambers, and sequentially using the high-pressure air expansion within the chambers to generate electricity; while generating electricity in the second expansion-side water-air co-containment chamber, discharging water from the first expansion-side water-air co-containment chamber to complete drainage energy release. Based on the above-mentioned pressurized water energy storage and drainage energy release operations, the water conservancy hub system can be controlled for target economic operation. This solves the problems of long construction cycles and high costs in related technologies for pumped-storage water conservancy hub systems, which only focus on the storage and regulation of electrical energy and cannot adapt to the diversified supply demands of integrated energy services.

Description

Technical Field

[0001] This application relates to the field of new energy technology, and in particular to an operation method for a water conservancy hub system based on pumped compressed air energy storage. Background Technology

[0002] With the large-scale integration of new energy sources in my country, hydropower-wind-solar hybrid power bases, as comprehensive energy hubs that can provide multiple functions such as smoothing new energy output, peak shaving and valley filling, frequency and phase regulation support, and emergency backup, often adopt pumped storage as the main regulating resource. However, water conservancy hub systems with pumped storage as the main equipment often require a long construction period, which is inconsistent with the shorter construction period of new energy sources and power transmission corridors.

[0003] In related technologies, hydropower-wind-solar hybrid power bases generally adopt pumped storage systems as the core regulating resource. These systems utilize the mutual conversion of electrical and hydropower to store and release energy, adapting to the intermittent and fluctuating output characteristics of new energy sources. However, this type of water conservancy hub system, with pumped storage as its main equipment, has significant technical drawbacks: Firstly, it has stringent requirements for terrain conditions, necessitating specific upper and lower reservoir layouts, and involves extensive civil engineering, resulting in a lengthy construction period, typically several years or even longer. Secondly, this construction period is severely mismatched with the relatively short construction periods of wind power, solar power, and other new energy projects and transmission corridors. This makes it difficult for pumped storage regulating resources to quickly respond to the grid connection needs of new energy projects, thus limiting the efficiency of new energy absorption and reducing the overall operational benefits of the integrated energy hub.

[0004] Therefore, the construction cycle of pumped storage hydropower projects in related technologies is long and the cost is high. Moreover, they only focus on the storage and regulation of electrical energy and cannot meet the diversified supply needs of integrated energy services, which urgently needs to be addressed. Summary of the Invention

[0005] This application provides an operation method for a water conservancy hub system based on pumped compressed air energy storage, in order to solve the problems of long construction cycle, high cost, and limited focus on the storage and regulation of electrical energy in related technologies, which cannot meet the diversified supply demand of integrated energy services.

[0006] The first aspect of this application provides a method for operating a hydraulic power system based on pumped compressed air energy storage, comprising the following steps: sequentially injecting first target state air into a first compression-side water-air co-containment chamber and a second compression-side water-air co-containment chamber of the hydraulic power system; while the first target state air is being injected into the second compression-side water-air co-containment chamber, venting the air in the first compression-side water-air co-containment chamber and injecting water into the first compression-side water-air co-containment chamber to perform pumped water energy storage operation; injecting water into the first expansion-side water-air co-containment chamber and the second expansion-side water-air co-containment chamber of the hydraulic power system respectively, so as to sequentially utilize the target pressure air in the first expansion-side water-air co-containment chamber and the second expansion-side water-air co-containment chamber for expansion power generation; while the second expansion-side water-air co-containment chamber is performing the expansion power generation, discharging the water in the first expansion-side water-air co-containment chamber to perform drainage energy release operation; and performing target economic operation regulation of the hydraulic power system based on the pumped water energy storage operation and the drainage energy release operation.

[0007] Optionally, in one embodiment of this application, the step of sequentially pressing the first target state air into the first compression-side water-air co-containment chamber and the second compression-side water-air co-containment chamber of the hydraulic hub system includes: using a compressor unit in the hydraulic hub system to compress the initial air into the second target state air; using a first heat exchanger in the hydraulic hub system to convert the thermal energy in the second target state air into the internal energy of the target heat transfer oil, so as to convert the second target state air into the first target state air; pressing the first target state air into the first compression-side water-air co-containment chamber of the hydraulic hub system, and when the air content in the first compression-side water-air co-containment chamber meets a first preset condition, continuing to press the first target state air into the second compression-side water-air co-containment chamber.

[0008] Optionally, in one embodiment of this application, the step of injecting water into the first expansion-side water-air co-containment chamber and the second expansion-side water-air co-containment chamber of the water conservancy hub system to sequentially utilize the target pressure air in the first expansion-side water-air co-containment chamber and the second expansion-side water-air co-containment chamber for expansion power generation includes: injecting water from the upper reservoir of the water conservancy hub system into the first expansion-side water-air co-containment chamber and the second expansion-side water-air co-containment chamber of the water conservancy hub system to convert the air in the first expansion-side water-air co-containment chamber and the second expansion-side water-air co-containment chamber into target pressure air; setting the valves between the expander unit, the second heat exchanger and the first expansion-side water-air co-containment chamber in the water conservancy hub system to the open state to utilize the target pressure air in the first expansion-side water-air co-containment chamber for expansion power generation; and controlling the target pressure air in the second expansion-side water-air co-containment chamber to continue expanding power generation when the target pressure air in the first expansion-side water-air co-containment chamber meets a second preset condition.

[0009] Optionally, in one embodiment of this application, after the water in the first expansion-side water-air co-containment chamber is discharged, the method further includes: detecting whether the first expansion-side water-air co-containment chamber and the upper reservoir are in a connected state; if the first expansion-side water-air co-containment chamber and the upper reservoir are detected to be in the connected state, injecting water from the upper reservoir into the first expansion-side water-air co-containment chamber to convert the air in the first expansion-side water-air co-containment chamber into the target pressure air.

[0010] Optionally, in one embodiment of this application, the specific method of regulating the target economic operation is as follows:

[0011] Establish a revenue model for the water conservancy hub system:

[0012] in, They are respectively t Electricity, heating, and cooling prices at any given time. These are power generation, charging power, heating power, and cooling power, respectively.

[0013] Constraints on establishing a water conservancy hub system:

[0014] in, The efficiency of the compressor in converting heat energy. This refers to the power of the solar thermal collector.

[0015] A second aspect of this application provides an operating device for a hydraulic power plant system based on pumped compressed air energy storage, comprising: a pumped compressed air energy storage module, used to sequentially pump air at a first target state into a first compression-side water-air co-containment chamber and a second compression-side water-air co-containment chamber of the hydraulic power plant system, and while the first target state air is pumped into the second compression-side water-air co-containment chamber, to vent the air in the first compression-side water-air co-containment chamber and inject water into the first compression-side water-air co-containment chamber to perform pumped compressed air energy storage operation; a drainage energy release module, used to inject water into the first expansion-side water-air co-containment chamber and the second expansion-side water-air co-containment chamber of the hydraulic power plant system respectively, so as to sequentially utilize the target pressure air in the first expansion-side water-air co-containment chamber and the second expansion-side water-air co-containment chamber for expansion power generation, and while the second expansion-side water-air co-containment chamber is performing the expansion power generation, to discharge the water in the first expansion-side water-air co-containment chamber to perform drainage energy release operation; and an operation control module, used to perform target economic operation control of the hydraulic power plant system based on the pumped compressed air energy storage operation and the drainage energy release operation.

[0016] Optionally, in one embodiment of this application, the pressurized water energy storage module includes: a compression unit for compressing initial air into second target state air using a compressor unit in the water conservancy hub system; a first conversion unit for converting the thermal energy in the second target state air into the internal energy of the target heat transfer oil using a first heat exchanger in the water conservancy hub system, so as to convert the second target state air into the first target state air; and a first processing unit for pressing the first target state air into the first compression-side water-air co-containment chamber of the water conservancy hub system, and when the air content in the first compression-side water-air co-containment chamber meets a first preset condition, continuing to pressurize the first target state air into the second compression-side water-air co-containment chamber.

[0017] Optionally, in one embodiment of this application, the drainage energy release module includes: a second conversion unit, used to inject water from the upper reservoir of the water conservancy hub system into the first expansion-side water-air co-containment chamber and the second expansion-side water-air co-containment chamber of the water conservancy hub system, respectively, so as to convert the air in the first expansion-side water-air co-containment chamber and the second expansion-side water-air co-containment chamber into target pressure air; a second processing unit, used to set the valve between the expander unit, the second heat exchanger and the first expansion-side water-air co-containment chamber in the water conservancy hub system to the open state, so as to use the target pressure air in the first expansion-side water-air co-containment chamber to perform the expansion power generation; and a third processing unit, used to control the target pressure air in the second expansion-side water-air co-containment chamber to continue to perform the expansion power generation when the target pressure air in the first expansion-side water-air co-containment chamber meets the second preset condition.

[0018] Optionally, in one embodiment of this application, the apparatus further includes: a detection module, configured to detect whether the first expansion-side water-air co-containment chamber and the upper reservoir are in a connected state after the water in the first expansion-side water-air co-containment chamber is discharged; and a conversion module, configured to inject water from the upper reservoir into the first expansion-side water-air co-containment chamber after the water in the first expansion-side water-air co-containment chamber is discharged, and if the connection between the first expansion-side water-air co-containment chamber and the upper reservoir is detected, so as to convert the air in the first expansion-side water-air co-containment chamber into the target pressure air.

[0019] Optionally, in one embodiment of this application, the specific method of regulating the target economic operation is as follows: Establish a revenue model for the water conservancy hub system:

[0020] in, They are respectively t Electricity, heating, and cooling prices at any given time. These are power generation, charging power, heating power, and cooling power, respectively.

[0021] Constraints on establishing a water conservancy hub system:

[0022] in, The efficiency of the compressor in converting heat energy. This refers to the power of the solar thermal collector.

[0023] A third aspect of this application provides an electronic device, including: a memory, a processor, and a computer program stored in the memory and executable on the processor. The processor executes the program to implement the operation method of a water conservancy hub system based on pumped compressed air energy storage as described in the above embodiments.

[0024] A fourth aspect of this application provides a computer-readable storage medium storing a computer program that, when executed by a processor, implements the above-described method for operating a water conservancy hub system based on pumped compressed air energy storage.

[0025] A fifth aspect of this application provides a computer program product, including a computer program that, when executed, is used to implement the above-described method for operating a water conservancy hub system based on pumped compressed air energy storage.

[0026] This embodiment of the application allows for the sequential injection of treated air into the first and second compression-side water-air co-containment chambers of a hydraulic power plant. While injecting air into the second compression-side chamber, the air in the first compression-side chamber is emptied and water is injected, completing pressurized water energy storage. Next, water is injected into the first and second expansion-side chambers, and the high-pressure air inside each chamber is used to generate electricity. While the second expansion-side chamber generates electricity, water is discharged from the first expansion-side chamber, completing drainage energy release. Based on the aforementioned pressurized water energy storage and drainage energy release operations, the hydraulic power plant system can be controlled for targeted economic operation, effectively shortening the construction period, saving costs, and effectively adapting to the diversified supply demands of integrated energy services. This solves the problems of long construction periods and high costs in related technologies for pumped-storage hydraulic power plant systems, which only focus on the storage and regulation of electrical energy and cannot adapt to the diversified supply demands of integrated energy services.

[0027] Additional aspects and advantages of this application will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of this application. Attached Figure Description

[0028] The above and / or additional aspects and advantages of this application will become apparent and readily understood from the following description of the embodiments taken in conjunction with the accompanying drawings, wherein: Figure 1 This is a schematic diagram of the compression side structure of a water conservancy hub system based on pumped compressed air energy storage according to an embodiment of this application; Figure 2 This is a schematic diagram of the expansion side structure of a water conservancy hub system based on pumped compressed air energy storage, according to an embodiment of this application. Figure 3 This is a flowchart illustrating an operation method for a water conservancy hub system based on pumped compressed air energy storage, according to an embodiment of this application. Figure 4 This is a schematic diagram of the structure of a hydraulic hub system operation device based on pumped compressed air energy storage according to an embodiment of this application; Figure 5 This is a schematic diagram of the structure of an electronic device provided according to an embodiment of this application. Detailed Implementation

[0029] The embodiments of this application are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this application, and should not be construed as limiting this application.

[0030] The following describes, with reference to the accompanying drawings, an operation method for a water conservancy hub system based on pumped compressed air energy storage according to an embodiment of this application. Addressing the issues mentioned in the background section regarding the long construction cycle and high cost of pumped storage water conservancy hub systems, which focus solely on electrical energy storage and regulation and cannot meet the diversified supply demands of integrated energy services, this application provides an operation method for a water conservancy hub system based on pumped compressed air energy storage. In this method, treated air in a first target state is sequentially pumped into the first and second compression-side water-air co-containment chambers of the water conservancy hub. When pumping air into the second compression-side water-air co-containment chamber, the air in the first compression-side water-air co-containment chamber is emptied and water is injected, completing pumped water energy storage. Next, water is injected into the first and second expansion-side water-air co-containment chambers, and the high-pressure air inside the chambers is used to generate electricity sequentially. When the second expansion-side water-air co-containment chamber generates electricity, the water in the first expansion-side water-air co-containment chamber is discharged, completing drainage energy release. Based on the above-mentioned pumped water energy storage and drainage energy release operations, the water conservancy hub system can be controlled for target economic operation, effectively shortening the construction cycle, saving costs, and effectively meeting the diversified supply demands of integrated energy services. This solves the problems of pumped storage hydropower systems in related technologies, such as long construction cycles, high costs, and a focus solely on the storage and regulation of electrical energy, which cannot meet the diversified supply demands of integrated energy services.

[0031] This application establishes a water conservancy hub system based on pumped compressed air energy storage, specifically combined with... Figure 1 and Figure 2 As shown, where, Figure 1 This is a schematic diagram of the compression side structure of a water conservancy hub system. Figure 2 This is a schematic diagram of the expansion side structure of a water conservancy hub system. The system includes: a compressor unit, an expander unit, two heat exchangers, two compressor-side water-air co-containment chambers, two expansion-side water-air co-containment chambers, a solar thermal collector field, an upper reservoir, and two sets of water diversion pipelines. The following will describe this water conservancy hub system in detail.

[0032] Specifically, Figure 3 This is a schematic flowchart illustrating an operation method for a water conservancy hub system based on pumped compressed air energy storage, provided as an embodiment of this application.

[0033] like Figure 3 As shown, the operation method of this water conservancy hub system based on pumped compressed air energy storage includes the following steps: In step S301, the first target state air is sequentially injected into the first compression side water-air co-containment chamber and the second compression side water-air co-containment chamber of the water conservancy hub system. When the first target state air is injected into the second compression side water-air co-containment chamber, the air in the first compression side water-air co-containment chamber is emptied and water is injected into the first compression side water-air co-containment chamber to perform pressurized water energy storage operation.

[0034] In this embodiment, the first target state air is high-pressure room temperature air obtained through the following steps. The specific temperature and pressure values ​​are set by those skilled in the art and are not specifically limited here. The first compression-side water-air co-containment chamber can be a first group of compression-side water-air co-containment chambers, and the second compression-side water-air co-containment chamber can be a first group of compression-side water-air co-containment chambers.

[0035] It is understood that, in this embodiment, the first target state air, i.e., high-pressure room temperature air, can be forced into the first set of compression-side water-air co-containment chambers of the aforementioned water conservancy hub system, so that the water in the first set of water-air co-containment chambers is forced into the upper reservoir of the aforementioned system. After the first set of compression-side water-air co-containment chambers is full of air, the valve is switched to continue to fill the second set of water-air co-containment chambers with high-pressure room temperature air. While the high-pressure room temperature air is being forced into the second set of compression-side water-air co-containment chambers, the air in the first set of compression-side water-air co-containment chambers is emptied, and water is injected into the first set of compression-side water-air co-containment chambers. In other words, the air is emptied when the first set of compression-side water-air co-containment chambers is not connected to the upper reservoir, and then the first set of compression-side water-air co-containment chambers are connected to the upper reservoir and filled with water. This cycle is repeated to perform pressurized water energy storage operation. Thus, this embodiment can achieve continuous and uninterrupted pressurized water energy storage by alternately filling and emptying the two compression-side water-air co-containment chambers with air, thereby improving the system's energy storage efficiency and operational stability.

[0036] In one embodiment of this application, the process of sequentially pressing the first target state air into the first compression-side water-air co-containment chamber and the second compression-side water-air co-containment chamber of the hydraulic hub system includes: compressing the initial air into the second target state air using a compressor unit in the hydraulic hub system; converting the thermal energy in the second target state air into the internal energy of the target heat transfer oil using a first heat exchanger in the hydraulic hub system, thereby converting the second target state air into the first target state air; pressing the first target state air into the first compression-side water-air co-containment chamber of the hydraulic hub system, and when the air volume in the first compression-side water-air co-containment chamber meets a first preset condition, continuing to press the first target state air into the second compression-side water-air co-containment chamber.

[0037] In this embodiment, the first preset condition is that the first compression-side water-air co-containment chamber is filled with air; the first heat exchanger is the heat exchanger on the compression side; the second target state air is high-temperature and high-pressure air, and the specific temperature and pressure values ​​are set by those skilled in the art and are not specifically limited here.

[0038] In actual implementation, this embodiment of the application can use an electric motor to drive the compressor unit in the above system to compress the initial air into the second target state air, i.e., high temperature and high pressure air, during pressurized water energy storage. The heat energy in the high temperature and high pressure air is converted into the internal energy of the heat transfer oil through the pressure heat exchanger in the above system. Finally, the obtained high pressure room temperature air is injected into the first set of compression-side water-air co-containment chambers, so that the water in the first set of water-air co-containment chambers is injected into the upper reservoir of the above system through the diversion pipe. After the first set of compression-side water-air co-containment chambers is full of air, the valve is switched to continue to inject high pressure room temperature air into the second set of water-air co-containment chambers. Thus, this embodiment of the application can achieve heat energy recovery and utilization, and ensure continuous and stable pressurized water energy storage by using the compressor unit for compression and the heat exchanger for heat exchange, combined with the alternating injection of the first target state air into the dual compression-side chambers according to preset conditions, thereby improving the system's energy utilization rate and operational reliability.

[0039] In step S302, water is injected into the first expansion side water-air co-containment chamber and the second expansion side water-air co-containment chamber of the water conservancy hub system, respectively, so as to use the target pressure air in the first expansion side water-air co-containment chamber and the second expansion side water-air co-containment chamber to generate electricity through expansion. When the second expansion side water-air co-containment chamber generates electricity through expansion, the water in the first expansion side water-air co-containment chamber is discharged to perform drainage energy release operation.

[0040] In this embodiment of the application, the first expansion-side water-air co-containment chamber is a first group of expansion-side water-air co-containment chambers, and the second expansion-side water-air co-containment chamber is a second group of expansion-side water-air co-containment chambers.

[0041] It is understood that, in this embodiment, water from the upper reservoir of the water conservancy hub system can be injected into the first and second sets of expansion-side water-air co-containment chambers of the water conservancy hub system, respectively. This converts the air inside the chambers into air at the target pressure, such as high-pressure air. The specific pressure value is set by those skilled in the art and is not specifically limited here. Then, the high-pressure air in the first and second sets of expansion-side water-air co-containment chambers is used sequentially for expansion power generation. While the second expansion-side water-air co-containment chamber is generating electricity, the water in the first set of expansion-side water-air co-containment chambers is discharged. That is, the water in the first set of water-air co-containment chambers is drained without being connected to the upper reservoir. Then, the water in the upper reservoir is used to store another chamber of high-pressure air. This cycle is repeated to perform drainage and energy release operations. Thus, in this embodiment, water can be alternately injected into the dual expansion-side water-air co-containment chambers for pressure storage and expansion power generation. Simultaneously, the water in the first chamber is emptied and reset when the second chamber is generating electricity, achieving continuous and uninterrupted drainage and energy release, ensuring power generation stability and system operating efficiency.

[0042] In one embodiment of this application, water is injected into the first expansion-side water-air co-containment chamber and the second expansion-side water-air co-containment chamber of the water conservancy hub system, respectively, to generate electricity by expanding the target pressure air in the first expansion-side water-air co-containment chamber and the second expansion-side water-air co-containment chamber in sequence. This includes: injecting water from the upper reservoir of the water conservancy hub system into the first expansion-side water-air co-containment chamber and the second expansion-side water-air co-containment chamber of the water conservancy hub system, respectively, to convert the air in the first expansion-side water-air co-containment chamber and the second expansion-side water-air co-containment chamber into target pressure air; setting the valve between the expander unit, the second heat exchanger and the first expansion-side water-air co-containment chamber in the water conservancy hub system to the open state, so as to generate electricity by expanding the target pressure air in the first expansion-side water-air co-containment chamber; and controlling the target pressure air in the second expansion-side water-air co-containment chamber to continue to expand and generate electricity when the target pressure air in the first expansion-side water-air co-containment chamber meets a second preset condition.

[0043] In this embodiment of the application, the second heat exchanger is an expansion-side heat exchanger; the second preset condition is the condition that the air in the first water-air coexistence chamber is depleted.

[0044] As one possible implementation, water from the upper reservoir of the above system flows through water diversion pipes into the first and second sets of expansion-side water-air co-containment chambers of the water conservancy hub system, respectively, to convert the air in both chambers into high-pressure air. Then, in this embodiment, the valves between one set of water-air co-containment chambers and the expander and heat exchanger can be opened to generate electricity through expansion. For example, the valves between the expander, the second heat exchanger, and the first expansion-side water-air co-containment chamber in the water conservancy hub system can be set to the open state to utilize the high-pressure air in the first expansion-side water-air co-containment chamber for expansion power generation. When the air in that set of water-air co-containment chambers is exhausted, the valves are switched to utilize the air in the other set of expansion-side water-air co-containment chambers, i.e., continuing to generate electricity using the air in the second set of expansion-side water-air co-containment chambers. Therefore, the embodiments of this application can convert high-pressure air by injecting water into the upper reservoir, and generate electricity alternately by combining the expander, heat exchanger and dual expansion side chambers according to preset conditions, which not only ensures the continuous and stable power generation process, but also achieves efficient energy conversion, and improves the system's energy release efficiency and operational reliability.

[0045] Optionally, in one embodiment of this application, after the water in the first expansion-side water-air co-containment chamber is discharged, the method further includes: detecting whether the first expansion-side water-air co-containment chamber and the upper reservoir are in a connected state; if the first expansion-side water-air co-containment chamber and the upper reservoir are detected to be in a connected state, injecting water from the upper reservoir into the first expansion-side water-air co-containment chamber to convert the air in the first expansion-side water-air co-containment chamber into target pressure air.

[0046] In some embodiments, the water in the first expansion-side water-air co-containment chamber is first drained without being connected to the upper reservoir. Then, when it is detected that the first expansion-side water-air co-containment chamber is connected to the upper reservoir, water from the upper reservoir is injected into the first expansion-side water-air co-containment chamber to convert the air in the first expansion-side water-air co-containment chamber into high-pressure air. This process is repeated to ensure that the connection between the first expansion-side water-air co-containment chamber and the upper reservoir is detected after drainage. This ensures that water is injected and pressurized in a timely manner after connection, enabling the chamber to quickly reset and prepare for power generation. This ensures the continuity of alternating power generation between the two chambers and further improves the system's energy release response speed and operational stability.

[0047] In step S303, the water conservancy hub system is regulated and controlled according to the target economic operation based on the pressurized water storage operation and the drainage energy release operation.

[0048] It is understood that in the pressurized water storage operation, air from the two sets of compressed-side water-air co-containment chambers is continuously discharged without being connected to the upper reservoir. Due to expansion and cooling, the gas temperature further decreases, providing cooling for residents within the water conservancy hub's radiation range. Simultaneously, the heat generated by the compressed gas can provide a certain heat source for nearby industries and businesses. In the drainage and energy release operation, the heat transfer oil heated by the solar thermal mirror field of the above system mixes with the remaining heat transfer oil on the compressed side and heats the high-pressure air. Finally, the air in the second target state drives the expander unit to do work, providing electricity for nearby loads. At the same time, the exhaust gas discharged by the expander unit has a lower temperature, which can also provide some cooling for nearby residents. Therefore, the embodiments of this application can combine the heating and cooling supply of pressurized water storage with the electrical and cooling output of drainage and energy release, achieving a coordinated supply of multiple energy sources (electricity, heat, and cooling) through economic operation regulation, fully exploring energy value, and improving the system's overall benefits and adaptability to diverse energy demands.

[0049] Furthermore, because the nearby heating and cooling loads fluctuate drastically with the seasons, it is necessary to develop special operational scheduling plans based on the seasons. In other words, the target economic operation and regulation requires first establishing a revenue model for the water conservancy hub system.

[0050] in, They are respectively t Electricity, heating, and cooling prices at any given time. These are power generation, charging power, heating power, and cooling power, respectively.

[0051] Constraints on establishing a water conservancy hub system:

[0052] in, The efficiency of the compressor in converting heat energy. This refers to the power of the solar thermal collector.

[0053] Therefore, the embodiments of this application can address the drastic fluctuations in heating and cooling loads caused by seasonal changes by establishing a revenue model that includes electricity, heat, cooling costs, and power, clarifying heating constraints, solving the problem with a linear programming toolbox, and formulating an operation scheduling plan adapted to the season, thereby ensuring the efficient and economical operation of the system under different operating conditions.

[0054] According to the proposed method for operating a water conservancy hub system based on pumped compressed air energy storage in this application, treated air in a first target state is sequentially pumped into the first and second compression-side water-air co-containment chambers of the water conservancy hub. While pumping air into the second compression-side water-air co-containment chamber, the air in the first compression-side water-air co-containment chamber is emptied and water is injected, completing pumped water energy storage. Next, water is injected into the first and second expansion-side water-air co-containment chambers, and the high-pressure air inside the chambers is used to generate electricity sequentially. While the second expansion-side water-air co-containment chamber is generating electricity, the water in the first expansion-side water-air co-containment chamber is discharged, completing drainage energy release. Based on the above-mentioned pumped water energy storage and drainage energy release operations, the water conservancy hub system can be controlled for target economic operation, effectively shortening the construction period, saving costs, and effectively adapting to the diversified supply demands of integrated energy services. This solves the problems of long construction periods and high costs in related technologies for pumped storage water conservancy hub systems, which only focus on the storage and regulation of electrical energy and cannot adapt to the diversified supply demands of integrated energy services.

[0055] Next, referring to the accompanying drawings, we describe the operating device for a water conservancy hub system based on pumped compressed air energy storage according to an embodiment of this application.

[0056] Figure 4 This is a block diagram of the operating device of a water conservancy hub system based on pumped compressed air energy storage, according to an embodiment of this application.

[0057] like Figure 4 As shown, the hydraulic hub system operation device 10 based on pumped compressed air energy storage includes: a pumped water energy storage module 100, a drainage energy release module 200, and an operation control module 300.

[0058] Specifically, the pressurized water storage module 100 is used to sequentially pressurize the first target state air into the first compression side water-air co-containment chamber and the second compression side water-air co-containment chamber of the water conservancy hub system, and when the first target state air is pressed into the second compression side water-air co-containment chamber, the air in the first compression side water-air co-containment chamber is emptied and water is injected into the first compression side water-air co-containment chamber to perform pressurized water storage operation.

[0059] The drainage energy release module 200 is used to inject water into the first expansion side water-air co-containment chamber and the second expansion side water-air co-containment chamber of the water conservancy hub system, respectively, so as to use the target pressure air in the first expansion side water-air co-containment chamber and the second expansion side water-air co-containment chamber to generate electricity through expansion. When the second expansion side water-air co-containment chamber generates electricity through expansion, the water in the first expansion side water-air co-containment chamber is discharged to perform drainage energy release operation.

[0060] The operation and control module 300 is used to control the water conservancy hub system to achieve target economic operation based on pressurized water storage operation and drainage energy release operation.

[0061] Optionally, in one embodiment of this application, the pressurized water energy storage module 100 includes: a compression unit, a first conversion unit, and a first processing unit.

[0062] The compression unit is used to compress the initial air into the second target state air using the compressor unit in the water conservancy hub system.

[0063] The first conversion unit is used to convert the thermal energy in the second target state air into the internal energy of the target heat transfer oil using the first heat exchanger in the water conservancy hub system, so as to convert the second target state air into the first target state air.

[0064] The first processing unit is used to pressurize the first target state air into the first compression side water-air co-containment chamber of the water conservancy hub system, and when the air content in the first compression side water-air co-containment chamber meets the first preset condition, to continue to pressurize the first target state air into the second compression side water-air co-containment chamber.

[0065] Optionally, in one embodiment of this application, the drainage energy release module 200 includes: a second conversion unit, a second processing unit, and a third processing unit.

[0066] The second conversion unit is used to inject water from the upper reservoir of the water conservancy hub system into the first expansion side water-air co-containment chamber and the second expansion side water-air co-containment chamber of the water conservancy hub system, respectively, so as to convert the air in the first expansion side water-air co-containment chamber and the second expansion side water-air co-containment chamber into target pressure air.

[0067] The second processing unit is used to set the valves between the expander unit, the second heat exchanger and the first expansion-side water-air co-containment chamber in the water conservancy hub system to the open state, so as to use the target pressure air in the first expansion-side water-air co-containment chamber to expand and generate electricity.

[0068] The third processing unit is used to control the target pressure air in the second expansion side water-air co-containment chamber to continue expanding and generating electricity when the target pressure air in the first expansion side water-air co-containment chamber meets the second preset condition.

[0069] Optionally, in one embodiment of this application, the apparatus further includes a detection module and a conversion module.

[0070] The detection module is used to detect whether the first expansion side water-air co-containment chamber and the upper reservoir are in a connected state after the water in the first expansion side water-air co-containment chamber is discharged.

[0071] The conversion module is used to inject water from the upper reservoir into the first expansion side water-air co-containment chamber after the water in the first expansion side water-air co-containment chamber is discharged, and when it is detected that the first expansion side water-air co-containment chamber is connected to the upper reservoir, so as to convert the air in the first expansion side water-air co-containment chamber into target pressure air.

[0072] Optionally, in one embodiment of this application, the specific method for regulating the target economic operation is as follows: Establish a revenue model for the water conservancy hub system:

[0073] in, They are respectively t Electricity, heating, and cooling prices at any given time. These are power generation, charging power, heating power, and cooling power, respectively.

[0074] Constraints on establishing a water conservancy hub system:

[0075] in, The efficiency of the compressor in converting heat energy. This refers to the power of the solar thermal collector.

[0076] It should be noted that the foregoing explanation of the embodiment of the operation method of the water conservancy hub system based on pumped compressed air energy storage also applies to the operation device of the water conservancy hub system based on pumped compressed air energy storage in this embodiment, and will not be repeated here.

[0077] According to the pumped-storage compressed air energy storage (PSA) system operation device proposed in this application, treated air in a first target state is sequentially pumped into the first and second compression-side air-water co-containment chambers of the hydropower station. While pumping air into the second compression-side air-water co-containment chamber, the air in the first compression-side chamber is emptied and water is injected, completing pumped-storage energy storage. Next, water is injected into the first and second expansion-side air-water co-containment chambers, and the target pressure air inside each chamber is used to expand and generate electricity. While the second expansion-side air-water co-containment chamber is generating electricity, the water in the first expansion-side chamber is discharged, completing drainage energy release. Based on the above-mentioned pumped-storage energy storage and drainage energy release operations, the hydropower station system can be controlled for target economic operation, effectively shortening the construction period, saving costs, and effectively adapting to the diversified supply demands of integrated energy services. This solves the problems of long construction periods and high costs in related technologies for pumped-storage hydropower station systems, which only focus on the storage and regulation of electrical energy and cannot adapt to the diversified supply demands of integrated energy services.

[0078] Figure 5 A schematic diagram of the structure of an electronic device provided in an embodiment of this application. The electronic device may include: The memory 501, the processor 502, and the computer program stored on the memory 501 and capable of running on the processor 502.

[0079] When the processor 502 executes the program, it implements the water conservancy hub system operation method based on pumped compressed air energy storage provided in the above embodiments.

[0080] Furthermore, electronic devices also include: Communication interface 503 is used for communication between memory 501 and processor 502.

[0081] The memory 501 is used to store computer programs that can run on the processor 502.

[0082] Memory 501 may include high-speed RAM memory, and may also include non-volatile memory, such as at least one disk storage device.

[0083] If the memory 501, processor 502, and communication interface 503 are implemented independently, then the communication interface 503, memory 501, and processor 502 can be interconnected via a bus to complete communication between them. The bus can be an Industry Standard Architecture (ISA) bus, a Peripheral Component Interconnect (PCI) bus, or an Extended Industry Standard Architecture (EISA) bus, etc. The bus can be divided into address bus, data bus, control bus, etc. For ease of representation, Figure 5 The bus is represented by a single thick line, but this does not mean that there is only one bus or one type of bus.

[0084] Optionally, in a specific implementation, if the memory 501, processor 502, and communication interface 503 are integrated on a single chip, then the memory 501, processor 502, and communication interface 503 can communicate with each other through an internal interface.

[0085] Processor 502 may be a central processing unit (CPU), an application specific integrated circuit (ASIC), or one or more integrated circuits configured to implement the embodiments of this application.

[0086] This embodiment also provides a computer-readable storage medium storing a computer program thereon, which, when executed by a processor, implements the above-described method for operating a water conservancy hub system based on pumped compressed air energy storage.

[0087] This embodiment also provides a computer program product, including a computer program, which, when executed, is used to implement the above-described method for operating a water conservancy hub system based on pumped compressed air energy storage.

[0088] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0089] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, "N" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0090] Any process or method described in the flowchart or otherwise herein can be understood as representing a module, segment, or portion of code comprising one or N executable instructions for implementing custom logic functions or processes, and the scope of the preferred embodiments of this application includes additional implementations in which functions may be performed not in the order shown or discussed, including substantially simultaneously or in reverse order depending on the functions involved, as should be understood by those skilled in the art to which embodiments of this application pertain.

[0091] The logic and / or steps represented in the flowchart or otherwise described herein, for example, can be considered as a sequenced list of executable instructions for implementing logical functions, and can be embodied in any computer-readable medium for use by, or in conjunction with, an instruction execution system, apparatus, or device (such as a computer-based system, a processor-included system, or other system that can fetch and execute instructions from, an instruction execution system, apparatus, or device). For the purposes of this specification, "computer-readable medium" can be any means that can contain, store, communicate, propagate, or transmit programs for use by, or in conjunction with, an instruction execution system, apparatus, or device. More specific examples (a non-exhaustive list) of computer-readable media include: an electrical connection having one or more wires (electronic device), a portable computer disk drive (magnetic device), random access memory (RAM), read-only memory (ROM), erasable and editable read-only memory (EPROM or flash memory), fiber optic devices, and portable optical disc read-only memory (CDROM). Alternatively, the computer-readable medium may be paper or other suitable media on which the program can be printed, since the program can be obtained electronically by optically scanning the paper or other medium, followed by editing, interpreting, or otherwise processing as necessary, and then stored in a computer memory.

[0092] It should be understood that the various parts of this application can be implemented using hardware, software, firmware, or a combination thereof. In the above embodiments, the N steps or methods can be implemented using software or firmware stored in memory and executed by a suitable instruction execution system. For example, if implemented in hardware, as in another embodiment, it can be implemented using any one or a combination of the following techniques known in the art: discrete logic circuits having logic gates for implementing logical functions on data signals, application-specific integrated circuits (ASICs) having suitable combinational logic gates, programmable gate arrays (PGAs), field-programmable gate arrays (FPGAs), etc.

[0093] Those skilled in the art will understand that all or part of the steps of the methods in the above embodiments can be implemented by a program instructing related hardware. The program can be stored in a computer-readable storage medium, and when executed, the program includes one or a combination of the steps of the method embodiments.

[0094] Furthermore, the functional units in the various embodiments of this application can be integrated into a processing module, or each unit can exist physically separately, or two or more units can be integrated into a module. The integrated module can be implemented in hardware or as a software functional module. If the integrated module is implemented as a software functional module and sold or used as an independent product, it can also be stored in a computer-readable storage medium.

[0095] The storage medium mentioned above can be a read-only memory, a disk, or an optical disk, etc. Although embodiments of this application have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting this application. Those skilled in the art can make changes, modifications, substitutions, and variations to the above embodiments within the scope of this application.

Claims

1. A method for operating a water conservancy hub system based on pumped compressed air energy storage, characterized in that, Includes the following steps: The first target state air is sequentially injected into the first compression side water-air co-containment chamber and the second compression side water-air co-containment chamber of the water conservancy hub system. When the first target state air is injected into the second compression side water-air co-containment chamber, the air in the first compression side water-air co-containment chamber is emptied and water is injected into the first compression side water-air co-containment chamber to perform pressurized water energy storage operation. Water is injected into the first expansion-side water-air co-containment chamber and the second expansion-side water-air co-containment chamber of the water conservancy hub system respectively, so as to use the target pressure air in the first expansion-side water-air co-containment chamber and the second expansion-side water-air co-containment chamber to generate electricity through expansion in sequence. When the second expansion-side water-air co-containment chamber generates electricity through expansion, the water in the first expansion-side water-air co-containment chamber is discharged to perform the drainage and energy release operation. Based on the pressurized water storage operation and the drainage energy release operation, the water conservancy hub system is regulated and controlled for target economic operation.

2. The method according to claim 1, characterized in that, The step of sequentially compressing the first target state air into the first compression-side water-air co-containment chamber and the second compression-side water-air co-containment chamber of the hydraulic hub system includes: The initial air is compressed into the second target state air using the compressor unit in the water conservancy hub system; The first heat exchanger in the water conservancy hub system is used to convert the thermal energy in the second target state air into the internal energy of the target heat transfer oil, so as to convert the second target state air into the first target state air. The first target state air is forced into the first compression side water-air co-containment chamber of the water conservancy hub system, and when the air content in the first compression side water-air co-containment chamber meets the first preset condition, the first target state air is further forced into the second compression side water-air co-containment chamber.

3. The method according to claim 1, characterized in that, The step of injecting water into the first expansion-side water-air co-containment chamber and the second expansion-side water-air co-containment chamber of the water conservancy hub system, respectively, to generate electricity by sequentially using the target pressure air in the first expansion-side water-air co-containment chamber and the second expansion-side water-air co-containment chamber, includes: Water from the upper reservoir of the water conservancy hub system is injected into the first expansion side water-air co-containment chamber and the second expansion side water-air co-containment chamber of the water conservancy hub system, respectively, so as to convert the air in the first expansion side water-air co-containment chamber and the second expansion side water-air co-containment chamber into target pressure air. The valves between the expander unit, the second heat exchanger, and the first expansion-side water-air co-containment chamber in the water conservancy hub system are set to the open state so as to use the target pressure air in the first expansion-side water-air co-containment chamber for expansion power generation. When the target pressure air in the first expansion side water-air co-containment chamber meets the second preset condition, the target pressure air in the second expansion side water-air co-containment chamber is controlled to continue the expansion and power generation.

4. The method according to claim 3, characterized in that, After the water in the first expansion-side water-air co-containment chamber is discharged, the process further includes: Detect whether the first expansion-side water-air co-containment chamber and the upper reservoir are in a connected state; When it is detected that the first expansion-side water-air co-containment chamber and the upper reservoir are in the connected state, water from the upper reservoir is injected into the first expansion-side water-air co-containment chamber to convert the air in the first expansion-side water-air co-containment chamber into the target pressure air.

5. The method according to claim 1, characterized in that, The specific methods for regulating the target economic operation are as follows: Establish a revenue model for the water conservancy hub system: in, They are respectively t Electricity, heating, and cooling prices at any given time. These are power generation, charging power, heating power, and cooling power, respectively. Constraints on establishing a water conservancy hub system: in, The efficiency of the compressor in converting heat energy. This refers to the power of the solar thermal collector.

6. An operating device for a water conservancy hub system based on pumped compressed air energy storage, characterized in that, include: The pressurized water storage module is used to sequentially pressurize the first target state air into the first compression side water-air co-containment chamber and the second compression side water-air co-containment chamber of the water conservancy hub system, and when the first target state air is pressed into the second compression side water-air co-containment chamber, the air in the first compression side water-air co-containment chamber is emptied and water is injected into the first compression side water-air co-containment chamber to perform pressurized water storage operation. The drainage energy release module is used to inject water into the first expansion side water-air co-containment chamber and the second expansion side water-air co-containment chamber of the water conservancy hub system, respectively, so as to use the target pressure air in the first expansion side water-air co-containment chamber and the second expansion side water-air co-containment chamber to generate electricity through expansion in sequence. When the second expansion side water-air co-containment chamber is generating electricity through expansion, the water in the first expansion side water-air co-containment chamber is discharged to perform drainage energy release operation. The operation and control module is used to perform target economic operation control of the water conservancy hub system based on the pressurized water storage operation and the drainage energy release operation.

7. The apparatus according to claim 6, characterized in that, The pressurized water energy storage module includes: The compression unit is used to compress the initial air into the second target state air using the compressor unit in the water conservancy hub system; The conversion unit is used to convert the thermal energy in the second target state air into the internal energy of the target heat transfer oil using the first heat exchanger in the water conservancy hub system, so as to convert the second target state air into the first target state air. The processing unit is used to pressurize the first target state air into the first compression side water-air co-containment chamber of the water conservancy hub system, and when the air content in the first compression side water-air co-containment chamber meets the first preset condition, to continue to pressurize the first target state air into the second compression side water-air co-containment chamber.

8. An electronic device, characterized in that, include: The system includes a memory, a processor, and a computer program stored in the memory and capable of running on the processor, wherein the processor executes the program to implement the operation method of a water conservancy hub system based on pumped compressed air energy storage as described in any one of claims 1-5.

9. A computer-readable storage medium having a computer program stored thereon, characterized in that, The program is executed by the processor to implement the operation method of the water conservancy hub system based on pumped compressed air energy storage as described in any one of claims 1-5.

10. A computer program product, comprising a computer program, characterized in that, The computer program is executed by a processor to implement the operation method of a water conservancy hub system based on pumped compressed air energy storage as described in any one of claims 1-5.

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