Novel pressure storage system and integrated structure for storage and transmission of wind and solar energy from clean energy bases in the desert, Gobi and wasteland

Abstract

A novel pressure storage system and integrated structure for storage and transmission of wind and solar energy based on clean energy bases in the desert, the Gobi and the wasteland, characterized by a wind turbine generator set (1), a photovoltaic-solar thermal generator set (2), a compressor set (3), an expander set (4), a local load tower (5) and a central load tower (6); wherein the wind turbine generator set (1) and the local load tower (5) are both arranged on a high mountain (8), the central load tower (6) and the photovoltaic-solar thermal generator set (2) are both located on land, and the central load tower (6) is connected to the photovoltaic-solar thermal generator set (2); wherein the wind turbine generator set (1) is connected to the local load tower (5) and the input end of the compressor set (3), the output end of the compressor set (3) is connected to the input end of the expander set (4), and the output end of the expander set (4) is connected to the central load tower (6); wherein a horizontal high mountain gas storage facility (7) is arranged on the high mountain (8), wherein the inlet end of the horizontal high mountain gas storage facility (7) is connected to the outlet end of the compressor set (3) and the outlet end of the horizontal high mountain gas storage facility (7) is connected to the inlet end of the compressor set (3).

Description

Technical FieldThe embodiments of the present invention relate to the technical field of wind energy storage and in particular to a novel pressure storage system and an integrated structure for storing and transferring wind and solar energies based on clean energy bases in the wei, the gobi and the OdlandBackground ArtAs a new energy source, wind or light can be used to realize the use of renewable energies. The power generation of a wind turbine generator set depends on different wind conditions (stable wind conditions, gusty wind conditions, gradually changing wind conditions, etc.), while the power generation of a solar turbine generator set depends on different sun hours and light irradiation, etc. As a result, it is often necessary to equip wind and solar power plants with energy stores in order to improve the consumption of wind and solar power and the grid-coupled control possibilities. Currently, gas accumulators can be used to convert electrical energy into gas pressure potential energy and gas thermal energy for storage.At present, the cost of gas accumulators in the pressure accumulator system accounts for a relatively high proportion of the overall system cost. Natural salt cavities, oil and gas reservoirs, exiting tunnels (with flexible airtight polymeric films on the inside walls), etc., are cost effective, but are limited due to geographical conditions. Artificial liners (thin steel plates / glass fibre reinforced plastic / concrete liner or rigid flexible composite sealing layer filled with bentonite) of cavities and gas storage chambers of concrete are relatively expensive (however, the quality of artificial steel liners is better than that of natural salt caverns / hard rock caverns). Most expensive are the above-ground tubing steels, metallic storage tanks, thermoplastic pipes, composite materials and rigid subsea storage tanks, flexible airbags, etc. Currently matured market applications include tubing steel, salt caverns, and artificial chambers.Currently, most artificial chambers are at a depth of less than 300 meters (the depth of salt cavern gas reservoirs may be as high as 1,000 meters), including build / permanent wells, connection tunnels, gas reservoir projects, safety passageways, etc., wherein the structure is comprised of an airtight sealing layer, a liner and the surrounding rock, the diameter is generally less than 30 meters, and the build cost is 5,000-6,000 yuan / square meter (tubular steel costs about 10,000 yuan / square meter). It is comparatively more suitable for cost-effective and large-scale production, in particular if no natural gas stores are present. In particular, it is necessary to dig downward from the bottom to build a vertical shaft and then dig at the bottom of the vertical shaft to form an air chamber connected to the vertical shaft, and to apply a sealing layer, a liner and surrounding rock on the inner wall of the air chamber, which complicates the structure of the entire artificial chamber and makes the construction work more difficult.Contents of the Utility ModelIn order to solve or at least partially solve the above technical problems, the embodiments of the present invention provide a novel pressure storage system and an integrated structure for storing and transferring wind and solar energy based on clean energy bases in the wei, the gobi and the Odland.The embodiments of the present invention provide a novel pressure storage system and an integrated structure for storing and transferring wind and solar energy based on clean energy bases in the coast, the gobi, and the Edema, comprising a wind turbine generator set, a photovoltaic solar thermal generator set, a compressor set, an expander set, a local load tower, and a central load tower; wherein the wind turbine generator set and the local load tower are both disposed on a high mountain, the central load tower and the photovoltaic solar thermal generator set are both on land, and the central load tower is connected to the photovoltaic solar thermal generator set; wherein the wind turbine generator set is connected to the local load tower and the input end of the compressor set, respectively, the output end of the compressor set is connected to the input end of the expander set, and the output end of the expander set is connected to the central load tower; wherein a horizontal high-bias gas accumulator is arranged on the high-bias, wherein the input end of the horizontal high-bias gas accumulator is connected to the output end of the compressor set, and the output end of the horizontal high-bias gas accumulator is connected to the input end of the compressor set.In some embodiments, the cross section of the horizontal high-combustion gas accumulator is circular, elliptical, or arc-trapezoidal.In some embodiments, the diameter of the horizontal high-combustion gas accumulator is not less than 30 m when the cross section of the horizontal high-combustion gas accumulator is circular, elliptical, or arc-trapezoidal; and / or the cross-sectional area of the horizontal high-combustion gas accumulator is not less than 700 m 2.In some embodiments, the photovoltaic solar thermal generator set includes a photovoltaic generator and a solar thermal generator, wherein the output end of the photovoltaic generator and the output end of the solar thermal generator are both connected to the central load tower.In some embodiments, the central load tower includes a first load tower and a second load tower connected to the first load tower, the first load tower being connected to the output end of the photovoltaic solar thermal generator set and the output end of the expander set, respectively.In some embodiments, the local load tower is located on the leeward side of the highback.In some embodiments, the compressor set and the expander set are connected via a three-in-one motor "motor phase shifter generator", and the compressor set and the expander set are arranged coaxially; a first clutch is provided between the three-in-one motor and the compressor set, and a second clutch is provided between the three-in-one motor and the expander set.In some embodiments, a buffer tank is also provided, the inlet end of the buffer tank being connected to the outlet end of the compressor set via a first control valve, while the outlet end of the buffer tank is connected to the inlet end of the compressor set via a second control valve; the horizontal boost gas accumulator is connected to the outlet end of the first control valve and the inlet end of the second control valve via a third control valve.In some embodiments, a common cold-storing heat exchanger is disposed between the first control valve and the inlet end of the buffer tank and between the second control valve and the outlet end of the buffer tank; a pressure reducing device is provided between the cold-storing heat exchanger and the inlet end of the buffer tank; a pressure increasing device is provided between the cold-storing heat exchanger and the outlet end of the buffer tank.In some embodiments, a common heat exchanger is provided between the compressor set and the expander set.Compared to the prior art, the technical solution provided by the embodiments of the present invention has the following advantages:The embodiments of the present invention provide a novel pressure storage system and integrated structure for storing and transferring wind and solar energy based on clean energy bases in the coast, gobi and the Odland, comprising a wind turbine generator set, a photovoltaic solar thermal generator set, a compressor set, an expander set, a local load tower and a central load tower. Both the wind turbine generator set and the local load tower are installed on a high mountain, the central load tower and the photovoltaic solar thermal generator set are both on land, and the central load tower is connected to the photovoltaic solar thermal generator set. The wind turbine generator set is connected to the local load tower and the input end of the compressor set, respectively, the output end of the compressor set is connected to the input end of the expander set, and the output end of the expander set is connected to the central load tower. A horizontal high-combustion gas accumulator is disposed on the high-combustion gas accumulator, the input end of the horizontal high-combustion gas accumulator being connected to the output end of the compressor set, and the output end of the horizontal high-combustion gas accumulator being connected to the input end of the compressor set. That is, as compared with the method in which it is necessary to trench down from the bottom to build a vertical shaft and then trench at the bottom of the vertical shaft to form an air chamber connected to the vertical shaft, and thereafter arrange a sealing layer, a liner and surrounding rock, the new pressure storage system and the integrated structure for storing and transferring wind and solar energy based on clean energy bases in the wech, the gobi and the Odland in the embodiment of the present invention can use the horizontal high-birg gas storage for compressed storage of gas by the construction of a horizontal high-birg gas storage on a high birg, whereby the structure of the entire horizontal high-combustion gas storage device is simple and easy to construct.FIGS. FiguresThe accompanying drawings are incorporated in and constitute a part of the specification, and illustrate embodiments consistent with the embodiments of the present invention, and together with the description, serve to explain the principles of the embodiments of the present invention.In order to illustrate the exemplary embodiments of the present invention or the technical solutions in the prior art more clearly, the figures required for the description of the exemplary embodiments or the prior art are briefly presented below. Obviously, other figures can be created for general technical personnel in this area on the basis of these figures without any creative efforts.FIG. 1 is a schematic structural diagram of a novel pressure storage system and an integrated structure for storing and transferring wind and solar energy based on clean energy bases in the desert, gobi, and the Odland described in an embodiment of the present invention.Wherein 1. wind turbine generator set; 11. wind turbine; 2. photovoltaic solar thermal generator set; 21. photovoltaic generator; 22. solar thermal generator; 3. compressor set; 31. compressor; 4. expander set; 41. expander; 5. local load tower; 6. central load tower; 61. first load tower; 62. second load tower; 7. horizontal high-bias gas accumulator; 8. high-bias; 91. three-in-one motor "motor phase shifter generator"; 92. first clutch; 93. second clutch; 94. buffer tank; 95. first control valve; 96. second control valve; 97. third control valve; 98. cold-storage heat exchanger; 981. Pressure Reducing Device; 982. Pressure Increasing Device; 99 Common Heat Exchanger.Specific EmbodimentsIn order to better understand the above-mentioned purposes, features and advantages of the embodiments of the present invention, the schematic of the embodiments of the present invention will be described in more detail below. It should be noted that the embodiments of the present invention and the features included in the embodiments may be combined with each other unless conflict exists.In the following description, many specific details are set forth in order to provide a thorough understanding of the embodiments of the present invention. However, the embodiments of the present invention may be implemented in a manner other than as described herein; obviously, the embodiments in the specification are only a part of the embodiments of the present invention and not all of the embodiments.As shown in FIG. 1, this embodiment provides a novel pressure storage system and an integrated structure for storing and transferring wind and solar energy based on clean energy bases in the wei, the gobi, and the Odland, which includes a wind turbine generator set 1, a photovoltaic solar thermal generator set 2, a compressor set 3, an expander set 4, a local load tower 5, and a central load tower 6.Both the wind turbine generator set 1 and the local load tower 5 are installed on a high mountain 8, the central load tower 6 and the photovoltaic solar thermal generator set 2 are both on land, and the central load tower 6 is connected to the photovoltaic solar thermal generator set 2. The wind turbine generator set 1 is connected to the local load tower 5 and the input end of the compressor set 3, the output end of the compressor set 3 is connected to the input end of the expander set 4, and the output end of the expander set 4 is connected to the central load tower 6, respectively.On the high-flow vessel 8, a horizontal high-flow vessel 7 is disposed, the input end of the horizontal high-flow vessel 7 is connected to the output end of the compressor set 3, and the output end of the horizontal high-flow vessel 7 is connected to the input end of the compressor set 3.In a specific embodiment, as shown in FIG. 1, a wind turbine generator set 1 and a load tower 5 may be installed on site on a high mountain 8, wherein the high mountain 8 is in particular a mountain with a relatively high height above the fixed country, such as a mountain in the vicinity of the weiss, the gobi and the edema. Wherein, the wind turbine generator set 1 can be arranged on the windward side of the high mountain 8 to fully use the wind on the high mountain 8 for wind power generation and improve the wind use rate.The local load tower 5 is arranged on the leeward side of the high-rise truck 8 and connected to the wind turbine generator set 1, so that the electrical energy generated by the wind turbine generator set 1 can be transmitted to the local load tower 5 in order for the consumers to use them on site. The photovoltaic solar thermal generator set 2 is disposed on land and connected to the central load tower 6, so that light energy and heat energy can be effectively used for power generation, and the generated power can be transmitted to the central load tower 6 for use by the loads.Moreover, in this embodiment, the input end of the compressor set 3 is connected to the wind turbine generator set 1, the output end of the compressor set 3 is connected to the input end of the expander set 4, and the output end of the expander set 4 is connected to the central load tower 6, so that electricity can be generated by compressing air by the compressor set 3 and expanding it by the expander set 4.In particular when storing energy, by driving the compressor set 3, low-pressure air or nitrogen or carbon dioxide can be compressed into a liquid or under / trans / supercritical state depending on the power and duration of the stored electrical energy and then stored in the horizontal high-combustion gas store 7. During the release of energy, the compressed air or the nitrogen or the carbon dioxide in the horizontal high-energy gas store 7 can be transported to the expander set 4, where they are expanded and used for power generation. The specific operating principles of the expander set 4 and the compressor set 3 can be taken from the description of the respective technology and these exemplary embodiments do not provide any specific restrictions in this respect.Moreover, in this embodiment, the compressor set 3 may be configured to include a plurality of compressors 31, for example, three compressors 31 as illustrated in FIG. 1, or may be configured to include two or more compressors 31. Accordingly, the expander set 4 may also be configured with a plurality of expanders 41, for example, with two expanders 41 as illustrated in FIG. 1, or may also be configured to include three or more expanders 41. The wind turbine generator set 1 may be configured to comprise a plurality of wind turbines 11, for example two wind turbines 11 or two or more wind turbines 11.In particular, a horizontal tunnel extending in the horizontal direction can be artificially buried in the high-rise bow 8 to form a high-rise horizontal gas storage 7, which simplifies the structure of the gas storage device, makes it easy to construct, and lowers the cost. Moreover, in a horizontal high-supply gas storage tank 7 with groundwater conduits, its constant pressure properties can be used to achieve compression and expansion of the air at constant pressure and thereby reduce energy consumption and the device loss rate. At the same time, increasing the water content of the working fluid in the horizontal high-energy gas accumulator 7 results in more efficient near isothermal compression in a wet compression environment, thereby improving the quality and enthalpy of the turbine inlet parameters and increasing the capacity and density of the gas accumulator. Since the internal pressure resistance of the high-level mountain 8 is much larger than the maximum exhaust pressure and the maximum suction pressure of the compressor and expander of the existing pressure storage system, the natural mountain environment can be utilized to expand the capacity of artificial gas storage on a large scale and at a low cost, thereby increasing the energy storage capacity and density. Moreover, the horizontal high-energy gas storage device 7 formed by horizontal digging in the high-energy gas storage device 8 can significantly reduce the cost of the gas storage device, and can be configured flexibly depending on the geographical position and gas storage requirement.In particular, the gas storage capacity, shape and size of the horizontal high-volume gas storage 7 can be determined according to the required gas storage capacity requirements. The construction cost of the horizontal high-supply gas storage tank 7 can be lowered to 3,000 yuan / square meter, and the height of the horizontal high-supply gas storage tank 7 can be kept basically at the same height as that of the conventional pressure storage system, thereby avoiding the high cost for the construction of the vertical duct and the handling cost which arises through the long longitudinal transport line during the construction of the vertical duct, and at the same time greatly reducing the pressure loss of the high-pressure gas in the transfer operation during the storage / release operation.If the photovoltaic solar-thermal generator set 2 is set up on land, for example, the land can be a desert or a deep surface in a basin, for example. These sites not only naturally concentrate light but also prevent sand formation and solidify the soil, thereby achieving efficient light and heat utilization. In addition, a pressure storage system with a horizontal high-charge gas storage device 7 can be erected on the flat surface at the foot of the high-charge container 8, in order to enable a cost-effective construction. On the windward side of the high-rise truck 8 a wind turbine generator set 1 is arranged. Since the wind-facing side of the high-rise appliance 8 is situated high and there is a stable air flow, the wind can be used efficiently. In addition, a local load tower 5 is erected on the leeward side of the high-rise truck 8. At this point, the air flow falls, heats and dries, and there is less freezing rain, which promotes the construction of the local load tower 5.For example, the usage time of the photovoltaic solar thermal generator set 2 installed in a low-rise area may reach 6 to 8 hours, the usage time of the pressure storage system including the horizontal high-bias gas storage 7 may reach 4 to 6 hours, and the usage time of the wind turbine generator set 1 may reach 8 to 12 hours. In this way, the weather-independent AC and DC transmission of the ultra-high voltage transmission channel can be realized as much as possible.For example, in this exemplary embodiment, the high-rise mountain 8 may be located in the interior of mongole (Kubqi mountain scheduled 81 million kilowatts, Ulan Buh mountain scheduled 63 million kilowatts, Tengger mountain scheduled 77 million kilowatts, Badain Jaran mountain scheduled 63 million kilowatts+Yinshan mountains having an average height of 1500-2000 meters, Helan mountains having an average height of 2000-3000 meters, Qilan mountains having an average height of 4000-5000 meters), Qinghai (Hainan Gobi scheduled 32.5 million kilowatts, Haixi Qaidam mountain scheduled 60 million kilowatts + Qilan mountains with an average height of 4000-5000 meters and Bayanka mountains with an average height of 4500-6000 meters) and Xinjiang (Kumtag wei scheduled 15 million kilowatts, the wei scheduled 11.5 million kilowatts in the northern tails of the Tianshan mountain, and the wei scheduled 15 million kilowatts + altun mountains with an average height of 3000-4000 meters, Tianshan mountain having an average height of 3000-5000 meters and Altai mountain having an average height of 1000-3000 meters).That is, as compared with the method in which it is necessary to trench down from the bottom to build a vertical shaft and then trench at the bottom of the vertical shaft to form an air chamber connected to the vertical shaft, and thereafter arrange a sealing layer, a liner and surrounding rock, the new pressure storage system and the integrated structure for storing and transferring wind and solar energy based on clean energy bases in the wech, the gobi and the Odland in the embodiment can use the horizontal high-birg gas storage 7 for compressed storage of gas by the construction of a horizontal high-birg gas storage on a high birg 8, whereby the structure of the entire horizontal high-birg gas storage 7 is simple and easy to construct.Moreover, in this exemplary embodiment, by placing the wind turbine generator set 1 on a high mountain 8 and the photovoltaic solar thermal generator set 2 on land and connecting the wind turbine generator set 1 to the local load tower 5 and the photovoltaic solar thermal generator set 2 to the central load tower 6 and combining with a pressure storage system with a horizontal high-mountain gas storage 7, a sub / trans / supercritical pressure storage system or an integrated storage and transmission of wind and solar energy in a wind solar installation directly coupled on the source side can be realized.In particular, if the electric power supply on the source side of the wind and solar power plant corresponds to the electric power supply on the load side, the pressure storage system does not function and storage and transmission of wind and solar energy are operated in an integrated manner. When the power supply on the source side of the wind and solar power plant is larger than the power demand on the load side, particularly when the solar radiation intensity is the highest in noon and the power consumption for production and life temporarily decreases, the pressure storage system starts with the horizontal high-energy gas storage 7, receives the surplus new power power on the source side or the light load current of the power grid for energy storage, and converts the electric power into the potential gas pressure energy stored in the horizontal high-energy gas storage 7 and the internal gas heat energy stored in the heat exchange device by electromechanical devices, thereby realizing the integrated operation of storage and transmission of wind and solar energy. When the power supply on the source side of the wind and solar power plant is lower than the power demand on the load side, particularly when the solar radiation intensity after sunset is practically zero and the evening peak power consumption occurs temporarily, the pressure storage system starts to release the previously stored power to supplement the peak value, and storage and transmission of wind and solar energy are operated in an integrated manner to improve the actual duty rate of the AC and DC transmission lines of the ultra-high voltage transmission channel and to achieve the boost functions of smooth and stable output, orderly tracing, efficient peak load, and frequency regulation of the grid connection of new power generation as much as possible.As shown in FIG. 1, in some embodiments, the cross section of the horizontal high-birg gas reservoir 7 is circular or may be elliptical, arc-trapezoidal, etc., so that excavation work for the horizontal high-birg gas reservoir 7 is relatively simple and convenient. The concrete shape of the horizontal high-level gas storage 7 can be set according to the actual terrain, the construction conditions, the gas storage capacity and other requirements, and this embodiment does not provide concrete restrictions on this.As shown in FIG. 1, in some embodiments, the diameter of the horizontal high-combustion gas storage tank 7 is not less than 30 m, so that the horizontal high-combustion gas storage tank 7 can have a sufficient capacity for storing compressed gas.For example, the diameter of the horizontal high-combustion gas storage tank 7 may be 30 m, 35 m, 40 m, etc.Accordingly, the cross-sectional area of the horizontal high-combustion gas storage tank 7 is not less than 700 m 2. By setting the cross-sectional area of the horizontal high-supply gas storage tank 7 to not less than 700 m 2 it has a sufficient capacity for gas storage.For example, the cross-sectional area of the horizontal high-supply gas storage 7 may be 700 m 2, or 750 m 2, or 800 m 2.As shown in FIG. 1, in some embodiments, the photovoltaic solar thermal generator set 2 includes a photovoltaic generator 21 and a solar thermal generator 22, and the output end of the photovoltaic generator 21 and the output end of the solar thermal generator 22 are both connected to the central load tower 6.In a specific embodiment, the photovoltaic generator 21 of the photovoltaic solar thermal generator set 2 may fully utilize the sunlight, convert light into electricity, and transmit it to the central load tower 6 for use by the users. Moreover, the solar thermal generator 22 of the photovoltaic solar thermal generator set 2 can also fully utilize the heat of the sunlight and convert the heat into electrical energy which is then transferred to the central load tower 6 for use by the loads.It should be noted that the central load tower 6 may be located in a city on the country or on the city, the country having more solar thermal resources than the mountains 8, so that the photovoltaic solar thermal generator set 2 can be configured to convert light and heat into electrical energy and then to transfer it to the central load tower 6, which then allows the central load tower 6 to transfer the electrical energy to the large grid in the city to allow users to use it.As shown in FIG. 1, in some embodiments, the central load tower 6 includes a first load tower 61 and a second load tower 62 connected to the first load tower 61, and the first load tower 61 is connected to the output ends of the photovoltaic solar thermal generator set 2 and the extension unit 4, respectively.That is, in order to meet the power demand of city, the central load tower 6 may be arranged to include two, namely, a first load tower 61 and a second load tower 62, the first load tower 61 being connected to the output ends of the photovoltaic solar thermal generator set 2 and the expander set 4, respectively, so that the electric power generated by the photovoltaic solar thermal generator set 2 can be transmitted to the first load tower 61 and further transmitted to the second load tower 62 via the first load tower 61 so as to finally transmit the electric power to the city large power grid via the first load tower 61 and the second load tower 62 for use by users.Moreover, in other embodiments, the number of adjustable central load towers 6 may also be three or more depending on the city's power requirement.As shown in FIG. 1, in some embodiments, the local load tower 5 is disposed on the leeward side of the mountain 8, so that the wind turbine generator set 1 located on the windward side of the mountain 8 can generate power using the wind on the high mountain 8 and then transmit the electric power to the nearby local load tower 5. In addition, a plurality of wind turbines 11 are respectively connected to the input end of the local load tower 5 and the input end of the compressor set 3 to meet the local demand of the nearby users.As shown in FIG. 1, in some embodiments, the compressor set 3 and the expander set 4 are connected via a three-in-one motor 91 "motor phase shifter generator", and the compressor set 3 and the expander set 4 are arranged coaxially. A first clutch 92 is provided between the three-in-one engine 91 and the compressor set 3, and a second clutch 93 is provided between the three-in-one engine 91 and the expander set 4.In a specific embodiment, by the coaxial arrangement of the compressor set 3 and the expander set 4, the entire arrangement can be made more compact to reduce the volume of the entire system. In addition, the electromechanical conversion losses caused by the multi-axis connection can be reduced and the efficiency of power conversion can be improved, contributing to improvement in the system integration degree and space utilization, saving in construction, operation and maintenance costs, and resulting in cost reductions and an increase in efficiency.Moreover, the three-in-one motor 91 "motor phase shifter generator" is connected to the compressor set 3 via the first clutch 92, so that the three-in-one motor 91 "motor phase shifter generator" can be used as a motor for driving the compressor set 3 to compress air or nitrogen or carbon dioxide, and then the compressed air or nitrogen or carbon dioxide can be stored in the horizontal high-supply gas storage 7 for storage. By connecting the second clutch 93 to the expander set 4, the three-in-one motor 91 "motor phase shifter generator" can be used as a generator to drive, expand, and generate power to the expander set 4. Moreover, the three-in-one motor 91 "motor phase shifter generator" can also be used as a phase shifter to increase reactive power output as the line voltage is lowered, absorb reactive power as the line voltage is raised, maintain the line voltage, improve system stability, and improve the quality of the system power supply.That is, the three-in-one motor 91 "motor phase shifter generator" is specifically a three-in-one motor of a generator, a motor, and a phase shifter, the three-in-one motor being used in conjunction with a clutch, whereby the cost for mechanical and electrical apparatuses can be significantly reduced. The specific coaxial package is flexible and can determine the position and amount of the shared mechanical and electrical equipment according to the power and speed of each portion of the compressor set 3 and the expander set 4.Specifically, as for the operation of the three-in-one motor 91 "motor phase condenser generator", when the first clutch 92 is engaged and the second clutch 93 is disengaged, the second output shaft of the three-in-one motor 91 "motor phase condenser generator" is connected to the compressor set 3 and can drive the compressor set 3, the compression and energy storage process of air, nitrogen, or carbon dioxide being performed at this time. When the first clutch 92 is disengaged and the second clutch 93 is engaged, the second input shaft of the three-in-one motor 91 "motor phase shifter generator" is connected to the expander set 4 and can drive the expander set 4 to operate and generate electricity. The air or the nitrogen or the carbon dioxide is expanded in order to release energy and generate electricity.The specific working principles of the three-in-one motor 91, "motor phase shifter generator", expander set 4 and compressor set 3 can be taken from the description of the corresponding technology and will not be described in detail in this embodiment.As shown in FIG. 1, in the novel pressure storage system and the integrated structure for storing and transferring wind and solar energy based on clean energy bases in the wei, the gobi and the Odland, a buffer tank 94 is further provided, wherein the input end of the buffer tank 94 is connected to the output end of the compressor set 3 via a first control valve 95, while the output end of the buffer tank 94 is connected to the input end of the compressor set 3 via a second control valve 96.The horizontal high-supply gas storage 7 is connected via a third control valve 97 to the output end of the first control valve 95 and the input end of the second control valve 96.In this embodiment, the buffer vessel 94 may be used to compress air, nitrogen, or carbon dioxide into a liquid state or store it in a sub / trans / supercritical state. By storing compressed air, nitrogen or carbon dioxide in the liquid or under / trans / supercritical state, the system efficiency can be significantly improved; the specific gas storage state of the pressure accumulator can be chosen to be flexible depending on the power and duration of the electrical energy to be stored in the wind farm or night current.For example, the first control valve 95, the second control valve 96, and the third control valve 97 may be all three-way valves.As shown in FIG. 1, in some embodiments, a common cold-accumulating heat exchanger 98 is disposed between the first regulating valve 95 and the inlet end of the buffer tank 94 and between the second regulating valve 96 and the outlet end of the buffer tank 94. A pressure reducing device 981 is provided between the cold storage heat exchanger 98 and the inlet end of the buffer tank 94; a pressure increasing device 982 is provided between the cold storage heat exchanger 98 and the outlet end of the buffer tank 94.During the energy storage process, the cold energy stored in the cold storage heat exchanger 98 is used to cool and liquify the compressed air or the nitrogen or the carbon dioxide at the same pressure. After the pressure reduction by the pressure reducing device 981, it is stored in the horizontal high-supply gas reservoir 7 at normal pressure. During the power release process, the cold storage heat exchanger 98 is used to warm the air or nitrogen or carbon dioxide to room temperature and then transport it to the expander for expansion and power generation.As shown in FIG. 1, in some embodiments, a common heat exchanger 99 is provided between the compressor set 3 and the expander set 4.In particular, by sharing the compressor set 3 and the expander set 4 with the heat exchanger 99, the cost of the heat storage and heat exchange subsystem can be reduced. The configurations of the compressor set 3 and the expander set 4 are different in different application scenarios, and the position and number of the common heat exchangers 99 may be arranged according to the temperature difference and pressure difference of the appropriate heat exchangers.It should be noted that in this document relational terms such as "first" and "second" are used only to distinguish one entity or operation from another entity or operation and do not necessarily require or imply an actual relationship or order between these entities or operations. Moreover, the terms "comprise," "include," or any other variations thereof are intended to cover a non-exclusive inclusion, such that a process, method, article, or device that includes a list of elements includes not only those elements, but also other elements not expressly listed, or also includes elements that are inherent in such a process, method, article, or device. Without further limitations, an element defined by the phrase "comprises a... " does not exclude the existence of other identical elements in the process, method, article, or apparatus comprising the element.The above description is merely a concrete implementation of the embodiments of the present invention, so that the general technical staff can understand or implement the embodiments of the present invention. Various modifications to these embodiments will be readily apparent to those of ordinary skill in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the embodiments of the present invention. Therefore, the embodiments of the present invention are not limited to the embodiments described herein, but are to be accorded the widest scope consistent with the principles and novel features of the embodiments of the present invention disclosed herein.

Claims

A novel pressure storage system and an integrated structure for storing and transferring wind and solar energy based on clean energy bases in the wei, the gobi and the Odland, characterized bya wind turbine generator set (1), a photovoltaic solar thermal generator set (2), a compressor set (3), an expander set (4), a local load tower (5) and a central load tower (6); wherein the wind turbine generator set (1) and the local load tower (5) are both arranged on a high mountain (8), the central load tower (6) and the photovoltaic solar thermal generator set (2) are both on land and the central load tower (6) is connected to the photovoltaic solar thermal generator set (2); wherein the wind turbine generator set (1) is connected to the local load tower (5) and the input end of the compressor set (3), respectively, the output end of the compressor set (3) is connected to the input end of the expander set (4), and the output end of the expander set (4) is connected to the central load tower (6); wherein a horizontal high-bias gas accumulator (7) is arranged on the high-bias (8), wherein the input end of the horizontal high-bias gas accumulator (7) is connected to the output end of the compressor set (3) and the output end of the horizontal high-bias gas accumulator (7) is connected to the input end of the compressor set (3).Novel pressure storage system and integrated structure for storing and transferring wind and solar energy based on clean energy bases in the weikin, the gobi and the Odland according to claim 1, characterized in that the cross section of the horizontal high-birg gas storage (7) is circular, elliptical or arc-trapezoidal.Novel pressure storage system and integrated structure for storing and transferring wind and solar energy based on clean energy bases in the weikin, the gobi and the Odland according to claim 2, characterized in that when the cross section of the horizontal high-bilger gas storage (7) is circular, elliptical or arc-trapezoidal, the diameter of the horizontal high-bilger gas storage (7) is not less than 30 m; and / or the cross-sectional area of the horizontal high-bilger gas storage (7) is not less than 700 m 2.Novel pressure storage system and integrated structure for storing and transferring wind and solar energy based on clean energy bases in the coast, the gobi and the Odland according to claim 1, characterized in that the photovoltaic solar thermal generator set (2) comprises a photovoltaic generator (21) and a solar thermal generator (22), the output end of the photovoltaic generator (21) and the output end of the solar thermal generator (22) both being connected to the central load tower (6).Novel pressure storage system and integrated structure for storing and transferring wind and solar energy based on clean energy bases in the wei, the gobi and the Odland according to claim 1, characterized in that the central load tower (6) comprises a first load tower (61) and a second load tower (62) connected to the first load tower (61), the first load tower (61) being connected to the output end of the photovoltaic solar thermal generator set (2) and the output end of the expander set (4), respectively.Novel pressure storage system and integrated structure for storing and transferring wind and solar energy based on clean energy bases in the weath, the gobi and the Odland according to claim 1, characterized in that the local load tower (5) is arranged on the leeward side of the high bilge (8).Novel pressure storage system and integrated structure for storing and transferring wind and solar energy based on clean energy bases in the coast, the gobi and the Odland according to any one of claims 1 to 6, characterized in that the compressor set (3) and the expander set (4) are connected via a three-in-one motor (91) "motor phase shifter generator", and wherein the compressor set (3) and the expander set (4) are arranged coaxially; wherein a first clutch (92) is provided between the three-in-one motor (91) and the compressor set (3) and a second clutch (93) is provided between the three-in-one motor (91) and the expander set (4).Novel pressure storage system and integrated structure for storing and transferring wind and solar energy based on clean energy bases in the coast, the gobi and the Odland according to any one of claims 1 to 6, characterized in that a buffer tank (94) is also provided, wherein the inlet end of the buffer tank (94) is connected via a first control valve (95) to the outlet end of the compressor set (3), while the outlet end of the buffer tank (94) is connected via a second control valve (96) to the inlet end of the compressor set (3); wherein the horizontal high-bias gas reservoir (7) is connected via a third control valve (97) to the outlet end of the first control valve (95) and to the inlet end of the second control valve (96).Novel pressure storage system and integrated structure for storing and transferring wind and solar energy based on clean energy bases in the sausage, the gobi and the Odland according to claim 8, characterized in that a common cold-storing heat exchanger (98) is arranged between the first control valve (95) and the inlet end of the buffer container (94) and between the second control valve (96) and the outlet end of the buffer container (94); wherein a pressure reducing device (981) is provided between the cold-storing heat exchanger (98) and the inlet end of the buffer container (94); wherein a pressure increasing device (982) is provided between the cold-storing heat exchanger (98) and the outlet end of the buffer container (94).Novel pressure storage system and integrated structure for storing and transferring wind and solar energy based on clean energy bases in the coast, the gobi and the Odland according to one of claims 1 to 6, characterised in that a common heat exchanger (99) is provided between the compressor set (3) and the expander set (4).

Images