Micro-grid energy storage power supply system and micro-grid integrated halogen extraction system

Abstract

The utility model discloses a kind of microgrid energy storage power supply system and microgrid integrated brine extraction system, including photovoltaic power generation system, cooling system, energy storage system and distribution system. Photovoltaic power generation system includes multiple photovoltaic power generation units, each photovoltaic power generation unit includes multiple photovoltaic power generation modules arranged along the circumference of electrical equipment, multiple photovoltaic power generation units are concentric and sequentially arranged along the direction away from electrical equipment, and photovoltaic power generation module includes photovoltaic panel and cooling plate arranged on the back light surface of photovoltaic panel;Cooling system is communicated with cooling flow passage in cooling plate, for conveying cooling medium into cooling flow passage, so that cooling medium flows through cooling plate and exchanges heat with photovoltaic panel;Energy storage system is used to be connected with photovoltaic power generation system, for storing the electric energy generated by photovoltaic power generation system;Distribution system is connected with photovoltaic power generation system and energy storage system, for distributing the electric energy generated by photovoltaic power generation system and the electric energy stored in energy storage system.

Description

Technical Field

[0001] This utility model belongs to the power supply and distribution system, specifically relating to a microgrid energy storage power supply system and a microgrid integrated brine extraction system. Background Technology

[0002] Currently, salt lakes recover resources such as potassium and lithium through well drilling, and the collected brine is transported to factories for extraction of valuable elements. These brine wells are located in remote, sparsely populated salt lake areas, characterized by water scarcity, frequent geological problems, and harsh weather conditions. The current power systems for drilling and brine extraction primarily rely on generators and industrial power grids. However, industrial power grids have limited coverage, lengthy approval and construction periods, large fixed investments, and significant line losses during long-distance transmission. Furthermore, regular safety and fault inspections along the power lines are required after construction. Generator power requires manual transportation of fuels such as diesel, necessitating long-distance travel for workers. Brine extraction areas typically have rudimentary facilities, with workers regularly checking the wells' operation under harsh conditions of wind and sun. Summary of the Invention

[0003] This utility model aims to at least partially solve one of the technical problems in the related art.

[0004] Therefore, embodiments of this utility model propose a microgrid energy storage power supply system that can fully utilize solar energy resources and achieve near-zero emissions.

[0005] An embodiment of this utility model also proposes a microgrid integrated brine extraction system.

[0006] The microgrid energy storage power supply system of this utility model embodiment includes:

[0007] A photovoltaic power generation system, comprising multiple photovoltaic power generation units, each photovoltaic power generation unit comprising multiple photovoltaic power generation modules arranged circumferentially along the electrical equipment, the multiple photovoltaic power generation units being concentrically arranged sequentially in a direction away from the electrical equipment, each photovoltaic power generation module comprising a photovoltaic panel and a cooling plate disposed on the back surface of the photovoltaic panel;

[0008] A cooling system, which is connected to the cooling channels in the cooling plate, is used to deliver a cooling medium into the cooling channels so that the cooling medium flows through the cooling plate and exchanges heat with the photovoltaic panel;

[0009] An energy storage system, which is connected to the photovoltaic power generation system and is used to store the electrical energy generated by the photovoltaic power generation system;

[0010] A power distribution system, which is connected to the photovoltaic power generation system and the energy storage system, is used to allocate the electrical energy generated by the photovoltaic power generation system and the electrical energy stored in the energy storage system.

[0011] The microgrid energy storage and power supply system of this utility model can make full use of the natural conditions of remote areas that are open, unobstructed, rich in solar energy resources, and have long sunshine hours to carry out photovoltaic power generation, energy storage and power supply, thereby forming a microgrid system that meets the normal operation of brine wells. The photovoltaic power generation system of this embodiment is in the shape of a bird's nest, which can improve the efficiency of energy storage and power distribution, reduce power loss, and at the same time regulate the temperature of the photovoltaic panels so that they are always in a stable and efficient working state, thereby improving power generation efficiency and equipment lifespan.

[0012] In some embodiments, the plurality of photovoltaic power generation units are arranged in a stepped manner;

[0013] In two adjacent photovoltaic power generation units, the photovoltaic power generation unit closer to the power-consuming equipment has a higher vertical height than the photovoltaic power generation unit farther away from the power-consuming equipment.

[0014] In some embodiments, the cooling system includes a cooling pipe connected to a photovoltaic module in one of the plurality of photovoltaic power generation units. The inlet end of the cooling pipe is located at the end of the cooling pipe furthest from the electrical equipment, so that the cooling medium flows from the photovoltaic power generation unit furthest from the electrical equipment to the photovoltaic power generation unit closer to the electrical equipment from top to bottom.

[0015] In some embodiments, the cooling pipe is spiral-shaped;

[0016] And / or, the number of cooling pipes is multiple;

[0017] And / or, the cooling plate is detachably connected to the photovoltaic panel.

[0018] In some embodiments, the energy storage system and the power distribution system are located in the middle of the photovoltaic power generation system, and the main power lines between the photovoltaic power generation system and the energy storage system and the power distribution system are arranged radially, with the power transmission direction of the main power lines being close to the power-consuming equipment.

[0019] And / or, the photovoltaic power generation module further includes a support frame, the photovoltaic panel and the cooling plate are disposed on the top of the support frame, the photovoltaic panel is inclined relative to the vertical direction, and the photovoltaic panel can swing in multiple directions on the top of the support frame.

[0020] In some embodiments, the capacity of the energy storage system is 16Q to 24Q, where Q is the hourly power consumption of the electrical equipment;

[0021] And / or, the energy storage system includes a vanadium redox flow battery.

[0022] The microgrid integrated brine extraction system of this utility model embodiment includes:

[0023] A brine extraction well system, wherein the brine extraction well system has a brine delivery pipe;

[0024] A microgrid energy storage power supply system, wherein the microgrid energy storage power supply system is as described in any of the above embodiments, the photovoltaic power generation system in the microgrid energy storage power supply system is arranged circumferentially around the brine extraction well system, and the microgrid energy storage power supply system is connected to the brine extraction well system for supplying power to the brine extraction well system;

[0025] The brine delivery pipe is connected to a cooling system to exchange heat between at least a portion of the brine in the brine delivery pipe and the photovoltaic panel as a cooling medium.

[0026] In some embodiments, a central control data acquisition system is further included. The central control data acquisition system is connected to the brine extraction well system and the microgrid energy storage power supply system. The central control data acquisition system is used to control and acquire data from the microgrid energy storage power supply system and the brine extraction well system, and the microgrid energy storage power supply system is used to supply power to the central control data acquisition system.

[0027] In some embodiments, a fuel generator set is also included, which is connected to the electrical equipment to provide backup power to the electrical equipment.

[0028] And / or, under the operating conditions of the photovoltaic power generation system, the temperature of the photovoltaic panel is between 15 degrees Celsius and 25 degrees Celsius;

[0029] And / or, the brine extraction well system includes a filter pipe and a pump, the filter pipe being used to filter sand and gravel in the rock formation and allow brine to flow into the filter pipe, and the pump being connected to the filter pipe and the brine delivery pipe to extract the brine from the filter pipe and deliver it through the brine delivery pipe.

[0030] And / or, it also includes a backwashing device and a freshwater tank, the backwashing device being connected to the brine extraction system, the cooling system and the freshwater tank to clean at least a portion of the equipment in the brine extraction system and the cooling system by drawing freshwater from the freshwater tank.

[0031] In some embodiments, there are multiple brine extraction well systems, and each brine extraction well system is circumferentially equipped with a microgrid energy storage power supply system, and the multiple microgrid energy storage power supply systems are connected to form a microgrid group. Attached Figure Description

[0032] Figure 1 This is a top view schematic diagram of the microgrid integrated brine extraction system according to an embodiment of this utility model.

[0033] Figure 2 This is a cross-sectional schematic diagram of a microgrid integrated brine extraction system according to an embodiment of this utility model.

[0034] Figure 3 This is a top view schematic diagram of a photovoltaic power generation system according to an embodiment of this utility model.

[0035] Figure 4 This is a top view schematic diagram of the photovoltaic power generation unit according to an embodiment of this utility model.

[0036] Figure 5 This is a schematic diagram of the arrangement of the photovoltaic panel and cooling plate according to an embodiment of the present invention.

[0037] Figure 6 This is a top view of the cooling pipe according to an embodiment of the present invention.

[0038] Figure 7 This is a front sectional view of the cooling pipe according to an embodiment of the present invention.

[0039] Figure label:

[0040] 1. Photovoltaic power generation system; 10. Photovoltaic power generation unit; 11. Photovoltaic power generation module; 12. Photovoltaic panel; 13. Cooling plate; 14. Support frame; 15. Cooling channel; 16. Main cable;

[0041] 2. Cooling system; 21. Cooling pipe; 211. Inlet end; 212. Outlet end; 22. Brine pump; 23. Branch pipe;

[0042] 3. Energy storage system;

[0043] 4. Power distribution system;

[0044] 5. Brine extraction well system; 51. Brine delivery pipeline;

[0045] 6. Fuel generator set. Detailed Implementation

[0046] The embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention.

[0047] like Figures 1 to 4 As shown, the microgrid energy storage power supply system of this utility model embodiment includes a photovoltaic power generation system 1, a cooling system 2, an energy storage system 3, and a power distribution system 4.

[0048] The photovoltaic power generation system 1 includes multiple photovoltaic power generation units 10. Each photovoltaic power generation unit 10 includes multiple photovoltaic power generation modules 11 arranged circumferentially along the electrical equipment. The multiple photovoltaic power generation units 10 are concentrically arranged sequentially in a direction away from the electrical equipment. That is, the photovoltaic power generation units 10 are in a ring shape, for example, roughly circular or roughly regular polygonal, and the multiple photovoltaic units 10 are arranged in a concentric ring. The photovoltaic power generation system 1 is arranged circumferentially around the electrical equipment (e.g., the brine extraction well system 5 shown in the figure), which can make full use of the circumferential space of the electrical equipment, make reasonable and efficient use of circumferential space, reduce the overall footprint, make its layout compact, make the pipelines more regular, and reduce the transmission distance and pipelines after photovoltaic power generation, which can greatly reduce power loss.

[0049] In this embodiment, the "direction away from the electrical equipment" is the direction from the inside out as shown in the figure, and correspondingly, the "direction closer to the electrical equipment" is the direction from the outside in as shown in the figure.

[0050] The photovoltaic power generation module 11 includes a photovoltaic panel 12 and a cooling plate 13 disposed on the back surface of the photovoltaic panel 12. A cooling system 2 is connected to a cooling channel 15 within the cooling plate 13, and is used to supply a cooling medium into the cooling channel 15, allowing the cooling medium to flow through the cooling plate 13 and exchange heat with the photovoltaic panel 12. The photovoltaic panel 12 receives solar energy and converts sunlight into electrical energy. The cooling plate 13 is disposed on the back surface of the photovoltaic panel 12 and is attached to the photovoltaic panel 12. The cooling medium flowing through the cooling plate 13 indirectly exchanges heat with the photovoltaic panel 12, thereby regulating the temperature of the photovoltaic panel 12.

[0051] Research has found that the optimal operating temperature for the photovoltaic panel 12 is approximately 15 to 25 degrees Celsius. Within this temperature range, the efficiency of the photovoltaic panel 12 is maximized, improving its output power and power generation efficiency. However, every 1 degree Celsius increase in temperature results in a 0.4% to 0.5% decrease in output power. Since some of the energy reaching the surface of the photovoltaic panel 12 is converted into heat, in high-temperature environments, such as those exceeding 36 degrees Celsius, the surface temperature of the photovoltaic panel 12 can reach over 52 degrees Celsius, and even 80 degrees Celsius when heat dissipation is poor, severely impacting its efficiency and lifespan. Therefore, cooling the photovoltaic panel 12 is essential to improve its efficiency and extend its lifespan.

[0052] Therefore, this embodiment uses a cooling medium to cool the photovoltaic panel 12. Taking a brine extraction system in a salt lake as an example, when the microgrid energy storage and power supply system of this embodiment is integrated into the brine extraction system, the brine in the extraction well can be used as a cooling medium to cool the photovoltaic panel 12. This method uses locally sourced materials and is environmentally friendly and pollution-free. The temperature of the brine collected is between 1 and 7 degrees Celsius in summer and between -5 and -1 degrees Celsius in winter. The brine has a low freezing point and is not prone to freezing, making it suitable for the large temperature difference between day and night in Northwest China. Compared to pure water, it has a longer annual service life and better practicality. It is a natural coolant, requiring no external refrigeration or other cooling media, thus reducing cooling costs. Of course, in other applications, this embodiment can utilize other existing cooling methods to cool the photovoltaic panel 12.

[0053] Energy storage system 3 is connected to photovoltaic power generation system 1 to store the electrical energy generated by photovoltaic power generation system 1; power distribution system 4 is connected to photovoltaic power generation system 1 and energy storage system 3. Power distribution system 4 can convert DC power into AC power and is responsible for distributing and monitoring the use of AC power to ensure that power is safely and effectively distributed to various power-consuming devices. Therefore, power distribution system 4 is used to allocate the electrical energy generated by photovoltaic power generation system 1 and the electrical energy stored in energy storage system 3.

[0054] The energy storage system 3 realizes the storage and output of electrical energy during the charging and discharging process. Under the condition of sunlight, the photovoltaic power generation system 1 operates normally, and part of the generated electrical energy can be directly transmitted to the electrical equipment, while the excess electrical energy can be stored in the energy storage system 3. Through the power distribution system 4, the electrical energy generated by the photovoltaic power generation system 1 and the electrical energy stored in the energy storage system 3 can be distributed, controlled, DC-inverted, protected and managed, ensuring the normal and stable power supply to the electrical equipment and realizing grid peak regulation.

[0055] The microgrid energy storage and power supply system of this utility model can make full use of the natural conditions of remote areas that are open, unobstructed, rich in solar energy resources, and have long sunshine hours to carry out photovoltaic power generation, energy storage and power supply, thereby forming a microgrid system that meets the normal operation of brine wells. The photovoltaic power generation system 1 of this embodiment is in the shape of a bird's nest, which can improve the efficiency of energy storage and power distribution, reduce power loss, and at the same time regulate the temperature of the photovoltaic panel 12 so that it is always in a stable and efficient working state, thereby improving power generation efficiency and equipment service life.

[0056] like Figures 1 to 7 As shown in the accompanying drawings, some other specific embodiments of the present invention will be described in detail below.

[0057] The microgrid energy storage power supply system of this utility model embodiment includes a photovoltaic power generation system 1, a cooling system 2, an energy storage system 3, and a power distribution system 4. Some of the structures and working principles in this embodiment are the same as those in the above embodiments, and therefore will not be repeated. The differences are as follows:

[0058] In this embodiment, the multiple photovoltaic power generation units 10 are arranged in a stepped manner. Among two adjacent photovoltaic power generation units 10, the photovoltaic power generation unit 10 closer to the electrical equipment has a higher vertical height than the photovoltaic power generation unit 10 farther away from the electrical equipment, forming an outer high and inner low, bird's nest-like structure, which has better ventilation performance, is conducive to cooling of the photovoltaic panel 12, and also facilitates the photovoltaic panel 12 to receive sunlight.

[0059] In this embodiment, the cooling plate 13 and the photovoltaic panel 12 are detachably connected, which facilitates inspection and maintenance, and also makes it easy to disassemble, reassemble, and reuse.

[0060] like Figure 2 As shown, the photovoltaic power generation module 11 also includes a support frame 14. The photovoltaic panel 12 and cooling plate 13 are located on top of the support frame 14. Depending on the position of the photovoltaic power generation module 11, supports 14 of different heights can be manufactured to ensure that the photovoltaic power generation module 11 has a structure with the outside higher than the inside. Of course, the support frame 14 can be set as a lifting support for easier height adjustment. Connecting rods can also be set between adjacent supports 14 to improve the stability of the photovoltaic power generation system 1.

[0061] The photovoltaic panel 12 is tilted relative to the vertical direction and can swing in multiple directions at the top of the support 14. The tilt angle and orientation of the photovoltaic panel 12 can be adjusted to better receive sunlight. For example, the tilt angle and orientation of the photovoltaic panel 12 can be adjusted in different seasons to ensure power generation efficiency.

[0062] The power generation of photovoltaic power generation system 1 depends on factors such as the area of ​​its installed photovoltaic panels 12, operating time, and sunlight intensity. The daily power generation of photovoltaic power generation mainly depends on factors such as the type of photovoltaic power generation system 1, light quality, installation orientation, and tilt angle. For example, in Northwest China, with an effective sunshine duration of 7 to 11 hours per day, the average daily power generation of photovoltaic power generation system 1 is approximately 3 to 6 kWh / m². Assuming an average daily power generation of 4.5 kWh / m², and considering a total power of 100 kW for equipment such as brine wells, operating 24 hours a day, the total daily electricity consumption would be 2400 kWh. Therefore, the total area of ​​the photovoltaic panels 12 would be 400 to 800 square meters.

[0063] Furthermore, the energy storage system 3, the power distribution system 4, and the electrical equipment are all arranged in the middle of the photovoltaic power generation system 1, so that the photovoltaic power generation system 1 is arranged around its circumference. The main power line 16 between the photovoltaic power generation system 1, the energy storage system 3, and the power distribution system 4 is arranged radially from the middle of the photovoltaic power generation system 1, and the power transmission direction of the main power line 16 is along the direction close to the electrical equipment, reducing the pipeline length and making the overall spatial layout more reasonable. In this embodiment, the energy storage system 3, the power distribution system 4, and the electrical equipment also have good ventilation and heat dissipation effects, taking into account the performance advantages of site space, photovoltaic power generation, power transmission, photovoltaic cooling, and other aspects.

[0064] The energy storage system 3 has a capacity of 16Q to 24Q, where Q is the hourly electricity consumption of the electrical equipment. It should be understood that the energy storage capacity of the energy storage system 3 can supply the electrical equipment with normal and stable operation for 16 to 24 hours, ensuring the normal and stable operation of the electrical equipment.

[0065] The footprint of energy storage system 3 depends on its energy storage capacity and energy density. In this embodiment, energy storage system 3 is a vanadium redox flow battery. A vanadium redox flow battery is a large-scale energy storage system capable of grid peak shaving and energy storage. Vanadium redox flow battery energy storage features high power output, large capacity, high efficiency, long lifespan, fast response, high safety, long lifespan, low flammability, and high construction flexibility, making it an effective method for long-term energy storage.

[0066] The footprint of a vanadium redox flow battery system is calculated as follows: Footprint (square meters) = Battery system capacity (kWh) / Battery system energy density (kWh / square meter). Therefore, using vanadium redox flow batteries for energy storage, with a 100kW load at the power consumption end, the energy storage system 3 can store enough electricity to support the load for 16 to 24 hours, i.e., 1600 to 2400 kWh. The energy density of the vanadium redox flow battery is between 10-50 Wh / L, meaning 1 cubic meter of battery can store 10 to 50 kWh. Assuming an average of 30 kWh and a battery height of 1 meter, the required footprint is 53 to 80 square meters.

[0067] The footprint of other equipment such as the power distribution system 4 can be determined according to the actual application situation to realize the spatial allocation and layout of the entire microgrid energy storage power supply system.

[0068] like Figure 6 and Figure 7As shown, the cooling system 2 in this embodiment includes a cooling pipe 21, which is connected to the photovoltaic power generation modules 11 in multiple photovoltaic power generation units 10. The inlet end of the cooling pipe 21 is located at the end of the cooling pipe 21 furthest from the electrical equipment, so that the cooling medium flows from the photovoltaic power generation unit 10 furthest from the electrical equipment to the photovoltaic power generation unit 10 closest to the electrical equipment from the outside in and from top to bottom. That is, after the cooling medium is first delivered to the inlet end 211 of the cooling pipe 21, the cooling medium flows from the outside in and from top to bottom in the cooling pipe 21 and the photovoltaic power generation module 11. At the same time, the flow of the cooling medium can be made smoother by utilizing the gravitational potential energy of the cooling medium. In this embodiment of the present invention, the cooling pipe 21 is also set to be spiral-shaped, so that the cooling medium flows spirally from the outside in and from top to bottom, the pipe is not easy to be blocked, the pressure loss is small, and the cooling pipe 21 is less affected by impact and more durable. When cooling of the photovoltaic panel 12 is not required, the cooling medium can flow out by gravity. The cooling medium residue in the cooling pipe 21 and the photovoltaic power generation module 11 is small, which facilitates drainage and avoids corrosion, scaling and other problems in the cooling pipe 21 or the cooling channel 15 in the photovoltaic power generation module 11.

[0069] Optionally, in this embodiment, there are multiple cooling pipes 21, all of which are spiral-shaped. By rationally arranging the multiple cooling pipes 21, the flow rate of the cooling medium in a single cooling pipe 21 and the total length of a single cooling pipe loop are optimized, thereby improving the cooling effect on the photovoltaic panel 12.

[0070] For example, if each photovoltaic power generation module 11 has 3 to 5 relatively independent cooling channels 15 in its cooling plate 13, then 3 to 5 parallel cooling pipes 21 can be set up and connected to the corresponding cooling channels 15 respectively. The cooling pipes 21 and all photovoltaic power generation modules 11 form 3 to 5 relatively independent cooling pipe loops, which avoids excessive temperature difference in different sections of the cooling pipes 21 and improves the cooling effect on the photovoltaic panels 12.

[0071] For example, when there are a large number of photovoltaic power generation units 10, in order to prevent the temperature of the cooling medium in the cooling pipe 21 from gradually rising to an excessively high temperature as it flows, multiple cooling pipes 21 can be set up to reduce the total length of a single cooling pipe loop. Each cooling pipe 21 is only connected to a portion of the photovoltaic power generation modules 11 in the photovoltaic power generation units 10. The cooling of all photovoltaic power generation modules 11 can be achieved by using multiple cooling pipes 21 arranged relatively independently. At this time, each cooling pipe 21 is arranged in a spiral shape, and the internal cooling medium flows from top to bottom.

[0072] like Figures 1 to 7As shown, the microgrid integrated brine extraction system of this utility model embodiment includes a brine extraction well system 5, a microgrid energy storage power supply system, and a central control data acquisition system.

[0073] This embodiment is used for power supply and data collection for brine extraction from salt lakes. It makes full use of the characteristics of salt lake areas, such as little cloud and rain, open space, virtually no tall trees, no obstruction, long hours of sunshine, strong radiation, and very rich solar energy resources, and provides a "bird's nest" type near-zero emission intelligent microgrid integrated brine extraction system.

[0074] The brine extraction system 5 includes a filter pipe, a pump, and a brine delivery pipe 51. The filter pipe is used to filter sand and gravel in the rock formation and allow brine to flow into the filter pipe. The pump is connected to the filter pipe and the brine delivery pipe 51 to extract the brine from the filter pipe and deliver it to the plant through the brine delivery pipe 51.

[0075] The microgrid energy storage power supply system is a microgrid energy storage power supply system as described in any of the above embodiments. The photovoltaic power generation system in the microgrid energy storage power supply system is arranged circumferentially around the brine extraction well system 5. The microgrid energy storage power supply system is connected to the brine extraction well system 5 and is used to supply power to the brine extraction well system 5.

[0076] The central control data acquisition system is connected to the brine extraction well system 5 and the microgrid energy storage power supply system. The central control data acquisition system is used to control and acquire data from the microgrid energy storage power supply system and the brine extraction well system 5, and the microgrid energy storage power supply system is used to supply power to the central control data acquisition system.

[0077] The brine conveying pipe 51 is connected to the cooling system 2 to exchange heat between at least a portion of the brine in the brine conveying pipe 51 and the photovoltaic panel 12 as a cooling medium. Specifically, a branch pipe 23 is provided on the brine conveying pipe 51, and the branch pipe 23 is connected to the cooling system 2. A brine pump 22 and a control switch can be installed on the branch pipe 23 to control the flow rate of the brine delivered to the cooling pipe 21. In this embodiment, the brine is delivered to the inlet end (high end) of the cooling pipe 21 by the brine pump 22, and then the brine flows spirally from the outside to the inside and from top to bottom to cool the photovoltaic panel 12. The outlet end (low end) of the cooling pipe 21 is connected to the brine conveying pipe 51, so that the brine flows back into the brine conveying pipe 51 and is finally delivered to the factory for extraction of valuable elements.

[0078] When the photovoltaic power generation system 1 is in operation, the temperature of the photovoltaic panel 12 is between 15 degrees Celsius and 25 degrees Celsius. The temperature of the photovoltaic panel 12 can be collected by the central control data acquisition system, thereby controlling the operation of the brine pump 22 in the cooling system 2. At night, the brine pump 22 does not work, and the brine in the cooling system 2 is drained.

[0079] This embodiment provides a near-zero emission smart microgrid integrated brine extraction system, applicable to power supply and data acquisition for brine wells in salt lakes. The system features a bird's nest-like design, including a photovoltaic power generation system 1, a central control data acquisition system, an energy storage system 3, a power distribution system 4, and a cooling system 2. It also includes other user-end components such as power output supply and lighting systems. The entire system is arranged with a higher outer layer and a lower inner layer, with the photovoltaic panels 12 on the outside and the power consumption terminals and power distribution system 4 on the inside. The main power lines radiate in opposite directions from the outside to the inside.

[0080] This embodiment uses renewable photovoltaic power generation, which is suitable for the sunlight conditions of salt lakes, can achieve near-zero emissions, and reduce power supply costs.

[0081] The microgrid integrated brine extraction system in this embodiment can work independently, has a long service life, is easy to set up, and can improve the working environment for staff.

[0082] This embodiment is constructed using different modules configured in varying proportions, resulting in a compact, flexible, and easily reusable structure. Its main functions are simple, enabling optimized solar energy utilization and overall structural configuration, ensuring self-sufficiency in power, coordinated control, and near-zero emissions. Furthermore, it is highly suitable for environments such as salt lake brine extraction, offering a long service life, high safety, and ease of maintenance.

[0083] In some embodiments, the microgrid integrated brine extraction system further includes a fuel generator set 6, a backwashing device, and a freshwater tank. The fuel generator set 6 is connected to electrical equipment (such as a brine extraction well system, a central control data acquisition system, etc.) to provide backup power to the electrical equipment. The fuel generator set 6 can be a diesel generator set. When the photovoltaic power generation system 1 fails to operate normally and the energy storage system 3 has insufficient power storage, the diesel generator set can be started to supplement the power supply and ensure the normal and stable operation of the brine extraction system.

[0084] The backwashing device is connected to the brine extraction well system 5, the cooling system 2, and the freshwater tank to clean at least some of the equipment in the brine extraction well system 5 and the cooling system 2 by drawing fresh water from the freshwater tank. For example, when there is no sunlight, the brine in the cooling system 2 needs to be drained, and the brine pump 22, cooling pipes 21, and cooling channels 15 in the photovoltaic power generation module 11 can be flushed with fresh water to prevent scaling or corrosion of the equipment. As another example, if salt deposits inside the filter pipe or on the surface of the brine extraction pump, the backwashing device can be used to clean the filter pipe and the brine extraction pump can be cleaned with fresh water.

[0085] In this embodiment, the temperature, flow rate, energy storage, and power generation detection information of the brine extraction well system 5 and the microgrid energy storage power supply system can be transmitted to the background of the central control data acquisition system via 5G for monitoring.

[0086] In some embodiments, there are multiple brine extraction well systems 5, and each brine extraction well system 5 is circumferentially equipped with a microgrid energy storage power supply system, and multiple microgrid energy storage power supply systems are connected to form a microgrid group.

[0087] With the gradual improvement of the microgrid energy storage and power supply system corresponding to each brine extraction well system, and as microgrid technology matures further, the independent microgrid integrated brine extraction systems of the salt lake can be further combined into microgrid clusters to form an integrated system of power supply, energy storage, and power distribution. This system can provide power to other power consumption scenarios in the field or supplement the industrial power grid.

[0088] This embodiment can supply power to intelligent brine extraction facilities, central control data acquisition modules, staff rest and living areas, oxygen supply, and other external power-consuming components. The central control data acquisition module is responsible for controlling and acquiring data from the overall microgrid integrated brine extraction system, as well as collecting and processing data from external components. Given the relatively constant power consumption and simple data acquisition characteristics of brine extraction wells in salt fields, the central control data acquisition module improves the acceptance and management of photovoltaic power generation, reduces grid losses, and lowers operating costs through microgrid operation control, including active and reactive power control, voltage regulation, rapid load tracking and energy storage, and frequency droop control.

[0089] Example 1:

[0090] In a pilot project at a brine extraction well in a salt lake in Tibet, the brine extraction well device has a power of 100KW, and other electrical loads such as lighting and oxygen supply are 10KW. The average effective sunshine time is 8 hours per day, the photovoltaic panel area is 560 square meters, and it is equipped with a vanadium redox flow storage module with a capacity of 2000 kWh. The entire power distribution, power consumption, and brine extraction well occupy 110 square meters. The temperature of the photovoltaic panels is controlled at 15 to 25 degrees Celsius during the day in summer through a photovoltaic brine cooling system, and 40 to 55 degrees Celsius without the cooling system. The entire system has been running normally and continuously for 28 days.

[0091] Example 2:

[0092] A pilot project for brine extraction wells in a salt lake in Qinghai Province has a brine extraction well power of 70KW, and other power loads such as lighting, induction cookers, air conditioning, and monitoring systems are 2KW. The average effective sunshine time is 7.5 hours per day, the photovoltaic panel area is 500 square meters, and it is equipped with a vanadium redox flow storage module with a capacity of 1800 kWh. The entire power distribution, power consumption, and brine extraction well area covers 100 square meters. The temperature of the photovoltaic panels is controlled by a photovoltaic brine cooling system. In summer, the temperature of the photovoltaic panels is controlled between 17 and 26 degrees Celsius during the day, and between 50 and 65 degrees Celsius without the cooling system. The entire system has been running normally and continuously for 28 days.

[0093] Example 3

[0094] A pilot project for brine extraction wells in a salt lake in Qinghai Province has a total power of 150KW, with other power loads such as lighting, induction cookers, air conditioning, and monitoring systems totaling 2KW. The average effective sunshine duration is 7.5 hours per day, the photovoltaic panel area is 900 square meters, and it is equipped with vanadium redox flow storage modules with a capacity of 2500 kWh. The entire power distribution, power consumption, and brine extraction well area covers 150 square meters. The photovoltaic brine cooling system controls the temperature of the photovoltaic panels during the day to be between 20 and 25 degrees Celsius, while it is between 35 and 45 degrees Celsius without the cooling system. The entire system has been running normally and continuously for 28 days.

[0095] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0096] 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 indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0097] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0098] In this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0099] In this utility model, the terms "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which is included in at least one embodiment or example of this utility model. 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.

[0100] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. A microgrid energy storage power supply system, characterized in that, include: A photovoltaic power generation system, comprising multiple photovoltaic power generation units, each photovoltaic power generation unit comprising multiple photovoltaic power generation modules arranged circumferentially along the electrical equipment, the multiple photovoltaic power generation units being concentrically arranged sequentially in a direction away from the electrical equipment, each photovoltaic power generation module comprising a photovoltaic panel and a cooling plate disposed on the back surface of the photovoltaic panel; A cooling system, which is connected to the cooling channels in the cooling plate, is used to deliver a cooling medium into the cooling channels so that the cooling medium flows through the cooling plate and exchanges heat with the photovoltaic panel; An energy storage system, which is connected to the photovoltaic power generation system and is used to store the electrical energy generated by the photovoltaic power generation system; A power distribution system, which is connected to the photovoltaic power generation system and the energy storage system, is used to allocate the electrical energy generated by the photovoltaic power generation system and the electrical energy stored in the energy storage system.

2. The microgrid energy storage power supply system according to claim 1, characterized in that, Multiple photovoltaic power generation units are arranged in a stepped manner; In two adjacent photovoltaic power generation units, the photovoltaic power generation unit closer to the power-consuming equipment has a higher vertical height than the photovoltaic power generation unit farther away from the power-consuming equipment.

3. The microgrid energy storage power supply system according to claim 2, characterized in that, The cooling system includes a cooling pipe connected to a photovoltaic module in one of the multiple photovoltaic power generation units. The inlet end of the cooling pipe is located at the end of the cooling pipe furthest from the electrical equipment, so that the cooling medium flows from the photovoltaic power generation unit furthest from the electrical equipment to the photovoltaic power generation unit closest to the electrical equipment from top to bottom.

4. The microgrid energy storage power supply system according to claim 3, characterized in that, The cooling pipe is spiral-shaped; And / or, the number of cooling pipes is multiple; And / or, the cooling plate is detachably connected to the photovoltaic panel.

5. The microgrid energy storage power supply system according to claim 2, characterized in that, The energy storage system and the power distribution system are located in the middle of the photovoltaic power generation system. The main power lines between the photovoltaic power generation system and the energy storage system and the power distribution system are arranged radially, and the power transmission direction of the main power lines is along the direction closest to the electrical equipment. And / or, the photovoltaic power generation module further includes a support frame, the photovoltaic panel and the cooling plate are disposed on the top of the support frame, the photovoltaic panel is inclined relative to the vertical direction, and the photovoltaic panel can swing in multiple directions on the top of the support frame.

6. The microgrid energy storage power supply system according to claim 1, characterized in that, The capacity of the energy storage system is 16Q to 24Q, where Q is the hourly power consumption of the electrical equipment. And / or, the energy storage system includes a vanadium redox flow battery.

7. A microgrid integrated brine extraction system, characterized in that, include: A brine extraction well system, wherein the brine extraction well system has a brine delivery pipe; A microgrid energy storage power supply system, wherein the microgrid energy storage power supply system is as described in any one of claims 1 to 6, wherein the photovoltaic power generation system in the microgrid energy storage power supply system is arranged circumferentially around the brine extraction well system, and the microgrid energy storage power supply system is connected to the brine extraction well system for supplying power to the brine extraction well system; The brine delivery pipe is connected to a cooling system to exchange heat between at least a portion of the brine in the brine delivery pipe and the photovoltaic panel as a cooling medium.

8. The microgrid integrated brine extraction system according to claim 7, characterized in that, It also includes a central control data acquisition system, which is connected to the brine extraction well system and the microgrid energy storage power supply system. The central control data acquisition system is used to control and acquire data from the microgrid energy storage power supply system and the brine extraction well system, and the microgrid energy storage power supply system is used to supply power to the central control data acquisition system.

9. The microgrid integrated brine extraction system according to claim 7, characterized in that, It also includes a fuel generator set, which is connected to the electrical equipment to provide backup power to the electrical equipment; And / or, under the operating conditions of the photovoltaic power generation system, the temperature of the photovoltaic panel is between 15 degrees Celsius and 25 degrees Celsius; And / or, the brine extraction well system includes a filter pipe and a pump, the filter pipe being used to filter sand and gravel in the rock formation and allow brine to flow into the filter pipe, and the pump being connected to the filter pipe and the brine delivery pipe to extract the brine from the filter pipe and deliver it through the brine delivery pipe. And / or, it also includes a backwashing device and a freshwater tank, the backwashing device being connected to the brine extraction system, the cooling system and the freshwater tank to clean at least a portion of the equipment in the brine extraction system and the cooling system by drawing freshwater from the freshwater tank.

10. The microgrid integrated brine extraction system according to claim 7, characterized in that, There are multiple brine extraction well systems, and each brine extraction well system is equipped with a microgrid energy storage power supply system in its circumferential direction. The multiple microgrid energy storage power supply systems are connected to form a microgrid group.

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