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

Abstract

The invention discloses a micro-grid energy storage and power supply system and a micro-grid integrated halogen collection system. The micro-grid energy storage and power supply system comprises a photovoltaic power generation system, a cooling system, an energy storage system and a power distribution system. The photovoltaic power generation system comprises a plurality of photovoltaic power generation units, each photovoltaic power generation unit comprises a plurality of photovoltaic power generation modules arranged in the circumferential direction of the electric equipment, the photovoltaic power generation units are concentric and are sequentially arranged in the direction away from the electric equipment, and each photovoltaic power generation module comprises a photovoltaic panel and a cooling plate arranged on the backlight face of the photovoltaic panel; the cooling system is communicated with the cooling flow channel in the cooling plate and is used for conveying a cooling medium into the cooling flow channel, so that the cooling medium flows through the cooling plate and exchanges heat with the photovoltaic panel; the energy storage system is connected with the photovoltaic power generation system and is used for storing electric energy generated by the photovoltaic power generation system; the power distribution system is connected with the photovoltaic power generation system and the energy storage system, and is used for allocating the electric energy generated by the photovoltaic power generation system and the electric energy stored in the energy storage system.

Description

TECHNICAL FIELD

[0001] The present application belongs to power supply system, and particularly relates to a micro-grid energy storage power supply system and a micro-grid integrated halogen extraction system. BACKGROUND

[0002] At present, salt lakes recover potassium, lithium and other resources through the drilling and halogen extraction process, and collect halogen water to transport to factories for extraction of valuable elements. The halogen extraction well is located in a remote, sparsely populated, water-deficient, geologically problematic, frequently windy and sandy weather, and relatively poor living environment salt lake area. At present, the drilling and halogen extraction power system is mainly based on generator power supply and industrial power grid power supply. However, the industrial power grid power supply range is limited, and the approval, construction cycle is long, the fixed investment is large, serious line loss will occur in the long-distance power transmission process, and personnel need to regularly patrol the power supply line for safety and fault inspection after the completion; the generator power supply needs manual transportation of fuel such as diesel oil, and the staff needs to travel back and forth. The halogen extraction area usually has simple facilities, and the staff regularly checks the operation status of the halogen extraction well, and the working environment is poor under the sun and wind. SUMMARY

[0003] The present application aims to at least solve one of the technical problems in the related art to some extent.

[0004] To this end, an embodiment of the present application proposes a micro-grid energy storage power supply system capable of fully utilizing solar energy resources and realizing near-zero emission.

[0005] An embodiment of the present application also proposes a micro-grid integrated halogen extraction system.

[0006] The micro-grid energy storage power supply system of the embodiment of the present application comprises: A photovoltaic power generation system, the photovoltaic power generation system comprises a plurality of photovoltaic power generation units, each photovoltaic power generation unit comprises a plurality of photovoltaic power generation modules arranged along the circumference of the power utilization equipment, a plurality of photovoltaic power generation units are arranged in sequence in a direction away from the power utilization equipment, and the photovoltaic power generation module comprises a photovoltaic panel and a cooling plate arranged on the back surface of the photovoltaic panel; A cooling system, the cooling system is in communication with a cooling flow channel in the cooling plate, and is used for conveying a cooling medium into the cooling flow channel, so that the cooling medium flows through the cooling plate and exchanges heat with the photovoltaic panel; An energy storage system, the energy storage system is used for connecting with the photovoltaic power generation system, and is used for storing the electric energy generated by the photovoltaic power generation system; A power distribution system, the power distribution system is connected with the photovoltaic power generation system and the energy storage system, and is used for distributing the electric energy generated by the photovoltaic power generation system and the electric energy stored in the energy storage system.

[0007] The micro-grid energy storage power supply system of the embodiment of the present application can make full use of the natural conditions of remote areas, such as open space, no shelter, rich solar energy resources and long illumination time, to carry out photovoltaic power generation, energy storage and power supply, thereby forming a micro-grid system meeting the normal operation of a halogen extraction well.

[0008] In some embodiments, the plurality of photovoltaic power generation units are arranged in a ladder shape. Among the two adjacent photovoltaic power generation units, the height of the photovoltaic power generation unit close to the power equipment in the vertical direction is higher than the height of the photovoltaic power generation unit away from the power equipment in the vertical direction.

[0009] In some embodiments, the cooling system comprises a cooling pipeline connected with the photovoltaic power generation module in the plurality of photovoltaic power generation units, and the inlet end of the cooling pipeline is located at the end of the cooling pipeline away from the power equipment, so that the cooling medium flows from the photovoltaic power generation unit away from the power equipment to the photovoltaic power generation unit close to the power equipment from top to bottom.

[0010] In some embodiments, the cooling pipeline is in a spiral shape. And / or, the number of the cooling pipelines is multiple. And / or, the cooling plate is detachably connected with the photovoltaic panel.

[0011] In some embodiments, the energy storage system and the power distribution system are located in the middle part 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 in a radial shape, and the power transmission direction of the main power lines is along the direction close to the power equipment. And / or, the photovoltaic power generation module further comprises a support, the photovoltaic panel and the cooling plate are arranged on the top of the support, the photovoltaic panel is arranged in an inclined manner relative to the vertical direction, and the photovoltaic panel can swing in multiple directions on the top of the support.

[0012] In some embodiments, the capacity of the energy storage system is 16Q to 24Q, wherein Q is the hourly power consumption of the power equipment. And / or, the energy storage system comprises a full vanadium flow battery.

[0013] The micro-grid integrated halogen extraction system of the embodiment of the present application comprises: A halogen extraction well system, the halogen extraction well system has a halogen conveying pipe; The micro-grid energy storage power supply system is the micro-grid energy storage power supply system as claimed in any one of the preceding embodiments, the photovoltaic power generation system in the micro-grid energy storage power supply system is arranged around the circumference of the brine pumping well system, and the micro-grid energy storage power supply system is connected with the brine pumping well system to supply power to the brine pumping well system. The brine conveying pipe is connected with the cooling system to exchange heat between at least part of the brine in the brine conveying pipe and the photovoltaic panel as a cooling medium.

[0014] In some embodiments, a central control data acquisition system is further included, which is connected with the brine pumping well system and the micro-grid energy storage power supply system, is used to control and acquire data of the micro-grid energy storage power supply system and the brine pumping well system, and the micro-grid energy storage power supply system is used to supply power to the central control data acquisition system.

[0015] In some embodiments, a fuel generator set is further included, which is connected with the electrical equipment to supply power to the electrical equipment as a backup power supply; And / or, the temperature of the photovoltaic panel is 15-25 degrees Celsius in the working state of the photovoltaic power generation system. And / or, the brine pumping well system includes a filter pipe and a water pumping pump, the filter pipe is used to filter sand and gravel in the rock stratum and make the brine flow into the filter pipe, and the water pumping pump is connected with the filter pipe and the brine conveying pipe to pump out the brine in the filter pipe and transport the brine through the brine conveying pipe. And / or, a backwashing device and a fresh water tank are further included, the backwashing device is connected with the brine pumping well system, the cooling system and the fresh water tank to clean at least part of the equipment in the brine pumping well system and the cooling system by pumping out fresh water in the fresh water tank.

[0016] In some embodiments, the number of the brine pumping well systems is multiple, the micro-grid energy storage power supply system is arranged around the circumference of each of the brine pumping well systems, and the multiple micro-grid energy storage power supply systems are connected to form a micro-grid group. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 is a top view schematic diagram of a micro-grid integrated brine pumping system according to an embodiment of the present application.

[0018] Figure 2 is a sectional view schematic diagram of a micro-grid integrated brine pumping system according to an embodiment of the present application.

[0019] Figure 3 is a top view schematic diagram of a photovoltaic power generation system according to an embodiment of the present application.

[0020] Figure 4 is a top view schematic diagram of a photovoltaic power generation unit of an embodiment of the present application.

[0021] Figure 5 is a schematic diagram of an arrangement of a photovoltaic panel and a cooling panel of an embodiment of the present application.

[0022] Figure 6 is a top view schematic diagram of a cooling pipe of an embodiment of the present application.

[0023] Figure 7 is a front view sectional view schematic diagram of a cooling pipe of an embodiment of the present application.

[0024] Reference signs: 1, photovoltaic power generation system; 10, photovoltaic power generation unit; 11, photovoltaic power generation module; 12, photovoltaic panel; 13, cooling panel; 14, support; 15, cooling flow channel; 16, main cable; 2, cooling system; 21, cooling pipe; 211, inlet end; 212, outlet end; 22, brine pump; 23, branch pipe; 3, energy storage system; 4, power distribution system; 5, brine pumping system; 51, brine conveying pipe; 6, fuel generator set. DETAILED DESCRIPTION

[0025] Embodiments of the present application are described in detail below, examples of which are shown in the accompanying drawings. The embodiments described below by reference to the drawings are exemplary and are intended to explain the present application, and cannot be understood as a limitation of the present application.

[0026] As shown in the drawings, Figures 1 to 4 the micro-grid energy storage power supply system of an embodiment of the present application includes a photovoltaic power generation system 1, a cooling system 2, an energy storage system 3 and a power distribution system 4.

[0027] The photovoltaic power generation system 1 includes a plurality of photovoltaic power generation units 10, each of which includes a plurality of photovoltaic power generation modules 11 arranged along the circumference of the electrical equipment, and the plurality of photovoltaic power generation units 10 are arranged concentrically and in sequence in a direction away from the electrical equipment. That is, the photovoltaic power generation units 10 are annular, for example, substantially circular or substantially regular polygonal, and the plurality of photovoltaic power generation units 10 are arranged in concentric rings. The photovoltaic power generation system 1 is arranged around the circumference of the electrical equipment (for example, the brine pumping system 5 shown in the drawings), which can make full use of the circumferential space of the electrical equipment, reasonably and efficiently utilize the circumferential space, reduce the overall land area, make the arrangement compact, and make the pipeline more regular. After photovoltaic power generation, the conveying distance is short and the pipeline is less, which can greatly reduce the electrical loss.

[0028] The direction away from the electrical equipment in the embodiment is the direction from inside to outside shown in the figure, and the direction close to the electrical equipment is the direction from outside to inside shown in the figure.

[0029] The photovoltaic power generation module 11 includes a photovoltaic panel 12 and a cooling plate 13 arranged on the back of the photovoltaic panel 12. The cooling system 2 is connected to the cooling flow channel 15 in the cooling plate 13, and is used to deliver cooling medium into the cooling flow channel 15, so that the cooling medium flows through the cooling plate 13 and exchanges heat with the photovoltaic panel 12. The photovoltaic panel 12 is used to receive a solar tube and convert sunlight into electrical energy. The cooling plate 13 is arranged on the back of the photovoltaic panel 12 and is attached to the photovoltaic panel 12. The cooling medium flowing in the cooling plate 13 can indirectly exchange heat with the photovoltaic panel 12 to regulate the temperature of the photovoltaic panel 12.

[0030] It is found through research that the optimal working temperature of the photovoltaic panel 12 is about 15-25 degrees Celsius, which helps to maximize the efficiency of the photovoltaic panel 12 and improve the output power and power generation efficiency of the photovoltaic panel 12. However, for every 1 degree Celsius increase in temperature, the output power will decrease by 0.4-0.5%. Since part of the energy reaching the surface of the photovoltaic panel 12 is converted into heat, in an environment with high air temperature, such as an air temperature of 36 degrees Celsius or higher, the surface temperature of the photovoltaic panel 12 can reach 52 degrees Celsius or higher, and even 80 degrees Celsius when the heat dissipation is poor, which will seriously affect the working efficiency and service life of the photovoltaic panel 12. In order to improve the working efficiency and service life of the photovoltaic panel 12, it is necessary to cool the photovoltaic panel 12.

[0031] Therefore, the embodiment cools the photovoltaic panel 12 by cooling medium. Taking a salt lake well brine extraction system as an example, when the micro-grid energy storage power supply system of the embodiment is integrated into the brine extraction system, the brine in the brine extraction well can be used as the cooling medium to cool the photovoltaic panel 12, which is locally sourced and environmentally friendly and non-polluting. The temperature of the brine collected in summer is 1-7 degrees Celsius, and in winter it is -5 to -1 degrees Celsius. The freezing point of the brine is low, and it is not easy to freeze. It is more suitable for the large day and night temperature difference in the northwest region. Compared with pure water, it has a long annual use time and better practicality. It is a natural coolant that does not require external refrigeration and does not need to arrange other cooling media, thereby reducing the cooling cost. Of course, in other application scenarios, other cooling means in the prior art can be used to cool the photovoltaic panel 12.

[0032] The energy storage system 3 is used to be connected with the photovoltaic power generation system 1, and is used to store the electric energy generated by the photovoltaic power generation system 1; the power distribution system 4 is connected with the photovoltaic power generation system 1 and the energy storage system 3, the power distribution system 4 can convert direct current into alternating current, is responsible for distribution and monitoring of alternating current, ensures that the electric power is safely and effectively distributed to each electric terminal equipment, therefore, the power distribution system 4 is used to distribute the electric energy generated by the photovoltaic power generation system 1 and the electric energy stored in the energy storage system 3.

[0033] The energy storage system 3 realizes the storage and output of electric energy in the charging and discharging process, in the case of having light, the photovoltaic power generation system 1 normally operates, part of the generated electric energy can be directly delivered to the electric terminal equipment, and the excess electric energy can be stored in the energy storage system 3, the power distribution system 4 can be used for distribution, control, direct current inversion, protection and management of the electric energy generated by the photovoltaic power generation system 1 and the electric energy stored in the energy storage system 3, so as to guarantee the normal and stable power supply to the electric terminal equipment, and the peak regulation of the power grid can be realized.

[0034] The micro-grid energy storage power supply system of the embodiment of the present application can make full use of the natural conditions of remote areas, such as open, no shelter, rich in solar energy resources and long illumination time, to carry out photovoltaic power generation, energy storage and power supply, so as to form a micro-grid system meeting the normal operation of a halogen well, the photovoltaic power generation system 1 of the embodiment is in the form of a bird's nest, which can improve the efficiency of energy storage and power distribution, reduce power loss, and at the same time, can regulate the temperature of the photovoltaic panel 12, so that it is always in a stable and efficient working state, improving the power generation efficiency and the service life of the equipment.

[0035] As shown in the drawings, the following will be described in detail in combination with the drawings. Figures 1 to 7

[0036] The micro-grid energy storage power supply system of the embodiment of the present application comprises a photovoltaic power generation system 1, a cooling system 2, an energy storage system 3 and a power distribution system 4. The structure and working principle of part of the embodiment are the same as those of the above-mentioned embodiment, and will not be described again, the difference is that: The plurality of photovoltaic power generation units 10 in the embodiment are arranged in a ladder shape. In the two adjacent photovoltaic power generation units 10, the height of the photovoltaic power generation unit 10 close to the electric terminal equipment in the vertical direction is higher than that of the photovoltaic power generation unit 10 far away from the electric terminal equipment, forming an outer high and inner low structure similar to a bird's nest, which has better ventilation performance, is conducive to the cooling of the photovoltaic panel 12, and is also convenient for the photovoltaic panel 12 to receive sunlight.

[0037] The cooling plate 13 in the embodiment is detachably connected with the photovoltaic panel 12, which is convenient for maintenance and maintenance, and is convenient for disassembly and recycling.

[0038] As shown in the drawings, the following will be described in combination with the drawings. Figure 2 ​As shown, the photovoltaic power generation module 11 further comprises a support 14, and the photovoltaic panel 12 and the cooling panel 13 are arranged on the top of the support 14. According to the position of the photovoltaic power generation module 11, the support 14 can be made in different heights, so as to ensure that the photovoltaic power generation module 11 is arranged in a structure of high outside and low inside. Of course, the support 14 can be arranged as a lifting support, which is more convenient for adjusting the height. A connecting rod can be arranged between adjacent supports 14, so as to improve the stability of the photovoltaic power generation system 1.

[0039] The photovoltaic panel 12 is arranged in an inclined manner relative to the vertical direction, and the photovoltaic panel 12 can swing in multiple directions on the top of the support 14. The inclination angle and the direction of the photovoltaic panel 12 can be adjusted, so as to better receive light. For example, in different seasons, the inclination angle and the direction of the photovoltaic panel 12 can be adjusted in a targeted manner, so as to ensure the power generation efficiency.

[0040] The power generation capacity of the photovoltaic power generation system 1 depends on the area of the installed photovoltaic panel 12, the working time, the light intensity and other factors. The daily power generation capacity of the photovoltaic power generation mainly depends on the type of the photovoltaic power generation system 1, the light quality, the installation direction, the inclination angle and other factors. For example, according to the northwest region, the effective daily light time is 7 to 11 hours, and the daily average power generation capacity of the photovoltaic power generation system 1 is about 3 to 6 degrees per square meter. Taking the daily average power generation capacity of 4.5 degrees per square meter as an example, the total power of the electric equipment such as the brine extraction well is 100 KW, and the daily working time is 24 hours, and the total power consumption of the whole day is 2400 degrees. The total area of the photovoltaic panel 12 can be obtained, and the total area of the photovoltaic power generation system is 400 to 800 square meters.

[0041] In addition, the energy storage system 3, the power distribution system 4 and the electric equipment are arranged in the middle part of the photovoltaic power generation system 1, so that the photovoltaic power generation system 1 is arranged around the circumferential direction. The main power line 16 between the photovoltaic power generation system 1 and the energy storage system 3 and the power distribution system 4 is arranged in a radial manner at the middle position of the photovoltaic power generation system 1, and the power transmission direction of the main power line 16 is transmitted in the direction close to the electric equipment, so as to reduce the pipeline length and make the overall space arrangement more reasonable. In the embodiment, the energy storage system 3, the power distribution system 4 and the electric equipment also have good ventilation and heat dissipation effect, and the performance advantages of site space, photovoltaic power generation, power transmission and photovoltaic cooling are considered.

[0042] The capacity of the energy storage system 3 is 16Q to 24Q, wherein Q is the hourly power consumption of the electric equipment. It should be understood that the power storage capacity of the energy storage system 3 can supply the electric equipment to normally and stably operate for 16 to 24 hours, so as to ensure the normal and stable operation of the electric equipment.

[0043] The footprint of the energy storage system 3 depends on the energy storage capacity and the energy density of the energy storage system 3, and the energy storage system 3 in the embodiment is a full vanadium flow battery. The full vanadium flow battery is a large energy storage system, which can be used for grid peak shaving and energy storage. The vanadium flow battery energy storage has high power output, large capacity, high efficiency, long service life, fast response, high safety, long service life, low risk of fire, high flexibility in construction, and is an effective way for long-time energy storage.

[0044] The footprint of the full vanadium flow battery system is: footprint (square meters) = battery system capacity (kWh) / battery system energy density (kWh / square meter). Therefore, using the full vanadium flow battery energy storage, when the load at the power consumption end is 100Kw, the energy storage system 3 can store the power consumption amount that can support the power consumption load to work for 16 to 24 hours, i.e. 1600 to 2400 degrees, and the energy density of the full vanadium flow battery is between 10-50Wh / L, 1 cubic meter of battery stores 10 to 50 degrees of electricity, and according to the average of 30 degrees of electricity, the battery is 1m high, and the required footprint is 53 to 80 square meters.

[0045] The footprint of the power distribution system 4 and other equipment can be determined according to the actual application to realize the space distribution and arrangement of the entire micro-grid energy storage power supply system.

[0046] As shown in Figure 6 and Figure 7 The cooling system 2 in the embodiment includes a cooling pipeline 21 connected with the photovoltaic power generation modules 11 in the plurality of photovoltaic power generation units 10. The inlet end of the cooling pipeline 21 is located at the end of the cooling pipeline 21 away from the power consumption equipment, so that the cooling medium flows from the photovoltaic power generation unit 10 away from the power consumption equipment to the photovoltaic power generation unit 10 close to the power consumption equipment in an outward-inward and top-down manner. That is, after the cooling medium is delivered to the inlet end 211 of the cooling pipeline 21, the cooling medium flows in an outward-inward and top-down manner in the cooling pipeline 21 and the photovoltaic power generation module 11, and the flow of the cooling medium can be made more smooth by means of the gravitational potential energy of the cooling medium. The cooling pipeline 21 in the embodiment is spirally arranged, so that the cooling medium spirally flows in an outward-inward and top-down manner, the pipeline is not easy to be blocked, the pressure loss is small, the impact on the cooling pipeline 21 is small, and the cooling pipeline 21 is more durable. When the cooling of the photovoltaic panel 12 is not needed, the cooling medium can flow out by gravity, the residual cooling medium in the cooling pipeline 21 and the photovoltaic power generation module 11 is small, the emptying is facilitated, and the problems such as corrosion and scaling in the cooling flow channel 15 of the cooling pipeline 21 or the photovoltaic power generation module 11 are avoided.

[0047] Optionally, the number of cooling pipes 21 in the embodiment is multiple, and the multiple cooling pipes 21 are all in a spiral shape. By reasonably arranging the multiple cooling pipes 21, the flow of the cooling medium in a single cooling pipe 21 and the total length of a single cooling pipe circuit are optimized, and the cooling effect on the photovoltaic panel 12 is improved.

[0048] For example, the cooling plate 13 in each photovoltaic power generation module 11 has 3 to 5 relatively independent cooling flow channels 15, and 3 to 5 cooling pipes 21 arranged side by side can be arranged to communicate with the corresponding cooling flow channels 15, and the cooling pipes 21 and all the photovoltaic power generation modules 11 form 3 to 5 relatively independent cooling pipe circuits, so as to avoid that the temperature difference between different sections of the cooling pipe 21 is too large, and the cooling effect on the photovoltaic panel 12 is improved.

[0049] For example, when the number of photovoltaic power generation units 10 is large, in order to avoid that the temperature of the cooling medium in the cooling pipe 21 gradually rises to a too high temperature along the flow direction, multiple cooling pipes 21 can be arranged to reduce the total length of a single cooling pipe circuit, each cooling pipe 21 is connected with the photovoltaic power generation modules 11 in part of the photovoltaic power generation units 10, and the multiple cooling pipes 21 arranged relatively independently are used to cool all the photovoltaic power generation modules 11. At this time, each cooling pipe 21 is arranged in a spiral shape, and the cooling medium in the cooling pipe 21 flows from top to bottom.

[0050] As shown in Figures 1 to 7 The micro-grid integrated brine extraction system of the embodiment of the application comprises a brine extraction well system 5, a micro-grid energy storage power supply system, and a central control data acquisition system.

[0051] The embodiment is used for power supply and data acquisition for salt lake brine extraction, fully utilizes the characteristics of the salt lake area, such as less cloud and rain, open, basically no tall trees, no shelter, long solar radiation, strong radiation, and very rich solar energy resources, and provides a "bird nest type" near-zero emission intelligent micro-grid integrated brine extraction system.

[0052] The brine extraction well system 5 has a filter pipe, a water pump, and a brine conveying pipe 51. The filter pipe is used for filtering sand and stone in the rock layer and making the brine flow into the filter pipe. The water pump is connected with the filter pipe and the brine conveying pipe 51, so as to extract the brine in the filter pipe and convey the brine to the factory through the brine conveying pipe 51.

[0053] The micro-grid energy storage power supply system is the micro-grid energy storage power supply system of any one of the above embodiments. The photovoltaic power generation system in the micro-grid energy storage power supply system is arranged around the brine extraction well system 5. The micro-grid energy storage power supply system is connected with the brine extraction well system 5 and is used for supplying power to the brine extraction well system 5.

[0054] The central control data acquisition system is connected with the brine pumping well system 5 and the micro-grid energy storage power supply system, the central control data acquisition system is used for controlling and collecting data of the micro-grid energy storage power supply system and the brine pumping well system 5, and the micro-grid energy storage power supply system is used for supplying power to the central control data acquisition system.

[0055] The brine conveying pipe 51 is connected with the cooling system 2, so that at least part of the brine in the brine conveying pipe 51 exchanges heat with the photovoltaic panel 12 as a cooling medium. Specifically, the brine conveying pipe 51 is provided with a branch pipe 23 connected with the cooling system 2, a brine pump 22 and a control switch can be arranged on the branch pipe 23, which is used to control the flow of brine conveyed into the cooling pipe 21. In this embodiment, the brine is conveyed to the inlet end (high end) of the cooling pipe 21 by the brine pump 22, and then the brine spirally flows from outside to inside and from top to bottom, so as to cool the photovoltaic panel 12. The outlet end 212 (low end) of the cooling pipe 21 is connected with the brine conveying pipe 51, so that the brine flows back into the brine conveying pipe 51, and finally is conveyed to the factory for extracting valuable elements.

[0056] In the working state of the photovoltaic power generation system 1, the temperature of the photovoltaic panel 12 is 15-25 degrees Celsius, the temperature of the photovoltaic panel 12 can be collected by the central control data acquisition system, and then the working of the brine pump 22 in the cooling system 2 is controlled. At night, the brine pump 22 does not work, and the brine in the cooling system 2 is emptied.

[0057] The present embodiment provides a near-zero emission intelligent micro-grid integrated brine pumping system, which is suitable for salt lake brine pumping well power supply and data acquisition. The overall design is in the form of a bird's nest, including a photovoltaic power generation system 1, a central control data acquisition system, an energy storage system 3, a power distribution system 4, a cooling system 2, and other user terminals such as an output power supply and a lighting system. The whole system is arranged from high to low, with the photovoltaic panel 12 on the outside and the power terminal and power distribution system 4 on the inside. The main wiring of the system is in the form of reverse radiation from outside to inside.

[0058] The present embodiment uses renewable energy photovoltaic power generation, which is suitable for salt lake lighting conditions, can achieve near-zero emission, and reduce power supply cost.

[0059] The micro-grid integrated brine pumping system of the present embodiment can work independently, has long service life, is easy to build, and can improve the working environment for workers.

[0060] The present embodiment is built by different modules in different proportions, which is compact, flexible and easy to recycle. The main function of the present embodiment is simple, which can realize the optimization of light energy utilization and overall structure, can guarantee the self-supply of electricity, collaborative control and near-zero emission. At the same time, it is very suitable for salt lake brine pumping and other environments, has long service life, high safety and easy maintenance.

[0061] In some embodiments, the micro-grid integrated brine extraction system further comprises a fuel generator set 6, a backwashing device and a fresh water tank. The fuel generator set 6 is connected with the electrical equipment (such as the brine extraction well system, the central control data acquisition system, etc.) to supply power to the electrical equipment as a backup power supplement. The fuel generator set 6 can be a diesel generator set. When the photovoltaic power generation system 1 cannot work normally and the energy storage system 3 is insufficient in stored power, the diesel generator set can be started to supplement power, thereby ensuring the normal and stable operation of the brine extraction system.

[0062] The backwashing device is connected with the brine extraction well system 5, the cooling system 2 and the fresh water tank to clean at least part of the equipment in the brine extraction well system 5 and the cooling system 2 by extracting fresh water in the fresh water tank. For example, when there is no light, the brine in the cooling system 2 needs to be emptied, and the brine pump 22, the cooling pipeline 21 and the cooling flow channel 15 in the photovoltaic power generation module 11 can be flushed by fresh water to avoid scaling or corrosion to the equipment. For another example, when salt is deposited on the inside of the water filter pipe and the surface of the brine extraction pump, the backwashing device can be used to clean the water filter pipe, and fresh water can be used to clean the brine extraction pump.

[0063] The temperature, flow, stored power, power generation and other detection information of the brine extraction well system 5 and the micro-grid energy storage power supply system in the embodiment can be transmitted to the background of the central control data acquisition system through 5G for monitoring.

[0064] In some embodiments, the number of the brine extraction well systems 5 is multiple, and the micro-grid energy storage power supply systems corresponding to each brine extraction well system 5 are arranged in the circumference and connected to form a micro-grid group.

[0065] With the gradual improvement of the micro-grid energy storage power supply system corresponding to each brine extraction well system, after the micro-grid technology is further mature, the independent micro-grid integrated brine extraction systems of the salt lakes can further form a micro-grid group to form an integrated joint system of power supply, power storage and power distribution, which can supply power to other power consumption scenes in the wild or supplement the industrial power grid.

[0066] The embodiment can supply power to the brine extraction intelligentized facility, the central control data acquisition module, the rest and living area of the staff, oxygen supply and other additional power consumption ends. The central control data acquisition module is used for the control and data acquisition of the overall micro-grid integrated brine extraction system and the data and information acquisition and arrangement of the additional part. In view of the characteristics that the power consumption power of the salt field brine extraction well is relatively constant and the data acquisition is relatively simple, the central control data acquisition module improves the photovoltaic power generation accommodation capacity and management level through the operation control of the micro-grid, including active and reactive power control, voltage regulation, fast load tracking and energy storage, frequency adjustment control and other means, reduces the network loss and the operation cost.

[0067] Embodiment 1: In a certain salt lake brine well pilot, the brine well device power is 100KW, the lighting, oxygen supply and other electric load is 10KW, the average daily effective illumination time is 8h, the photovoltaic panel area is 560 square meters, the vanadium flow energy storage module capacity is 2000 degrees of electricity, the entire power distribution, electricity end, brine well covers an area of 110 square meters, controlled by the photovoltaic brine cooling system, the photovoltaic panel temperature is controlled at 15 to 25 degrees Celsius in summer, without cooling system, it is 40 to 55 degrees Celsius, the entire system is normally and continuously operated for 28 days.

[0068] Example 2 In a certain salt lake brine well pilot in Qinghai, the brine well device power is 70KW, the lighting, electromagnetic oven, air conditioner, monitoring system and other electric load is 2KW, the average daily effective illumination time is 7.5h, the photovoltaic panel area is 500 square meters, the vanadium flow energy storage module capacity is 1800 degrees of electricity, the entire power distribution, electricity end, brine well covers an area of 100 square meters, controlled by the photovoltaic brine cooling system, the photovoltaic panel temperature is controlled at 17 to 26 degrees Celsius in summer, without cooling system, it is 50 to 65 degrees Celsius, the entire system is normally and continuously operated for 28 days.

[0069] Example 3 In a certain salt lake brine well pilot in Qinghai, the brine well device total power is 150KW, the lighting, electromagnetic oven, air conditioner, monitoring system and other electric load is 2KW, the average daily effective illumination time is 7.5h, the photovoltaic panel area is 900 square meters, the vanadium flow energy storage module capacity is 2500 degrees of electricity, the entire power distribution, electricity end, brine well covers an area of 150 square meters, controlled by the photovoltaic brine cooling system, the photovoltaic panel temperature is controlled at 20 to 25 degrees Celsius in summer, without cooling system, it is 35 to 45 degrees Celsius, the entire system is normally and continuously operated for 28 days.

[0070] In the description of the present application, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0071] In addition, the terms "first", "second", etc. are used only for descriptive purposes and do not connote or imply a relative importance or an ordering between or among the indicated features. Thus, a feature defined with "first", "second", etc. can include at least one of the features, either explicitly or implicitly. In the description of the present application, the meaning of "a plurality" is at least two, for example, two, three, etc., unless otherwise specifically defined.

[0072] In the present application, unless otherwise specifically indicated and limited, the terms "mounting", "connecting", "connection", "fixed", etc. should be understood broadly, for example, can be fixed connection, can be detachable connection, or integral; can be mechanical connection, can be electrical connection or communication with each other; can be directly connected, or indirectly connected through an intermediate medium; can be the internal communication of two elements or the interaction relationship between two elements, unless otherwise specifically defined. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0073] In the present application, unless otherwise specifically indicated and limited, the first feature is "on" or "under" the second feature, which can be direct contact between the first and second features, or indirect contact between the first and second features through an intermediate medium. Moreover, the first feature "above", "over" and "on" the second feature can be directly above or obliquely above the first feature, or only indicate that the horizontal height of the first feature is higher than that of the second feature. The first feature "below", "under" and "under" the second feature can be directly below or obliquely below the first feature, or only indicate that the horizontal height of the first feature is less than that of the second feature.

[0074] In the present application, the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. mean that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In the present specification, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any appropriate manner in any one or more embodiments or examples. In addition, those skilled in the art can combine and combine the different embodiments or examples described in the specification and the features of the different embodiments or examples, without contradiction.

[0075] Although the embodiments of the present application have been shown and described above, it should be understood that the above embodiments are exemplary and cannot be construed as limiting the present application, and those skilled in the art can make changes, modifications, replacements and variations to the above embodiments within the scope of the present application.

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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