New energy storage distributed air energy power station

Abstract

A new energy storage distributed air energy power station is characterized in that the new energy storage distributed air energy power station comprises a photovoltaic energy storage power generation system and an air pressure circulation energy storage system, and a control circuit combiner box of the photovoltaic energy storage power generation system is connected with an air compressor control box in the air pressure circulation energy storage system; electric energy of the photovoltaic energy storage power generation system is used for driving an air compressor of the air pressure circulation energy storage system, the air compressor stores air into an air storage tank, the air storage tank is connected with a pneumatic motor through an air pipe, and the pneumatic motor is connected with a power generator through a transmission mechanism. The device is simple in overall structure, rapid to install and economical and practical in maintenance and operation cost, only needs local distributed installation of a low-voltage power system, and does not need a long-distance high-voltage power transmission matching system. The load capacity of a commercial power supply line can be reduced, and the power utilization cost of cities, enterprises and industrial and mining units is saved.

Description

Technical Field

[0001] The present invention relates to the technical field of renewable energy power generation, and in particular to a renewable energy energy storage distributed air energy power station. Background Art

[0002] Thermal power generation in my country accounts for more than 60% of the total power generation. Calculated based on an installed capacity of 6,000 kW generators and an electricity generation rate of 300.7 grams of coal per kilowatt-hour, the annual coal consumption is about 1.8 billion tons. Although there have been some fluctuations, the operating costs are relatively high, which is not conducive to the healthy development of the economy and environmental protection.

[0003] Chinese patent 202410997893.5 discloses a power generation system coupled with compressed air energy storage and photovoltaic thermal power station, including a photovoltaic power generation unit, which is connected to a booster station unit through a busbar, and the busbar is also connected to a photothermal power generation unit and a compressed air energy storage power generation unit, respectively, and the photothermal power generation unit is connected to a heat exchange unit, which is connected to the compressed air energy storage power generation unit; the booster station unit is connected to an external power grid through an external transmission line. The present invention also discloses a method for generating electricity using the system, S1: close the high-voltage side circuit breaker of the main transformer, and the main transformer and the busbar are energized; S2: determine the lighting conditions, if they are met, enter S3, if not met, start the compressed air energy storage power generation unit and the heat exchange unit to generate electricity; S3: compare the power generation power under scheduling with the power of each power generation unit, and determine the total number of power generation units to generate electricity.

[0004] Chinese patent 202311396757.2 discloses a novel photovoltaic and photothermal coupled compressed air energy storage power generation system, comprising: a photovoltaic device, including a photovoltaic panel; a photothermal device, including a collector panel and a heat storage tank; an energy storage power generation device, including a gas tank, an energy storage component that uses the electricity generated by the photovoltaic panel to compress air and introduces the compressed air into the gas tank, and an energy release component that uses the compressed air in the gas tank for power generation; a cleaning device, connected to the exhaust gas discharge end of the energy release component to guide the low-temperature and low-pressure exhaust gas to the photovoltaic panel and / or the collector panel, which has the advantages of utilizing the operating characteristics of each component in the energy system to achieve the system's high power generation efficiency and high thermal energy utilization rate.

[0005] The above system is relatively complex as a whole and has high construction cost. Summary of the invention

[0006] The purpose of the present invention is to provide a new energy storage distributed air energy power station. The installed capacity of the generator is designed according to the actual power consumption, and the power supply equipment is connected and installed, which has low construction cost and is economical and applicable.

[0007] The technical solution of the present invention is: a new energy energy storage distributed air energy power station, including a photovoltaic energy storage power generation system and a gas pressure cycle energy storage system. The control circuit junction box of the photovoltaic energy storage power generation system is connected to the air compressor control box in the gas pressure cycle energy storage system. The electric energy of the photovoltaic energy storage power generation system is used to drive the air compressor of the gas pressure cycle energy storage system. The air compressor stores air in an air storage tank. The air storage tank is connected to an air motor through an air pipe, and the air motor is connected to a generator through a transmission mechanism.

[0008] The photovoltaic energy storage power generation system includes a photovoltaic panel, the photovoltaic panel is connected to an inverter, the inverter is connected to a control circuit combiner box, and the control circuit combiner box is connected to an air compressor control box.

[0009] It also includes a hydrogen storage fuel cell circulating energy storage power generation system, and the electric energy of the hydrogen storage fuel cell circulating energy storage power generation system is transmitted to the air compressor control box.

[0010] The pneumatic motor of the pneumatic cycle energy storage system is connected to the inertia wheel through an electronic clutch, and the inertia wheel is connected to the input end of the generator through a transmission shaft and a hydraulic coupler.

[0011] The inertia wheel is connected to a pulley on the transmission shaft through a transmission belt.

[0012] There are more than two generators, and a transfer case is provided at the input end of the generator.

[0013] The pneumatic motor of the air pressure cycle energy storage system is connected to an inertia wheel, the inertia wheel is connected to a hybrid magnetic suspension bearing device, the hybrid magnetic suspension bearing device is arranged on a sliding track and connected to a telescopic cylinder, the inertia wheel is connected to one end of a magnetic coupler through a transmission shaft, and the other end of the magnetic coupler is connected to an input end of a generator.

[0014] A pneumatic motor generator used in a new energy storage distributed air energy power station includes a pneumatic motor, the pneumatic motor is connected to an inertia wheel through an electronic clutch, and the inertia wheel is connected to an input end of a generator through a transmission shaft and a hydraulic coupler.

[0015] A pneumatic motor power generation device used in a new energy storage distributed air energy power station comprises a pneumatic motor, the pneumatic motor is connected to an inertia wheel, the inertia wheel is connected to a hybrid magnetic suspension bearing device, the hybrid magnetic suspension bearing device is arranged on a sliding track and connected to a telescopic cylinder, the inertia wheel is connected to one end of a magnetic coupler through a transmission shaft, and the other end of the magnetic coupler is connected to an input end of a generator.

[0016] Beneficial effects of the present invention: The present invention has a simple overall structure, quick installation, economical maintenance and operation costs, and only requires local distributed installation of low-voltage power systems, without the need for long-distance high-voltage power transmission supporting systems. The required power consumption is configured according to the use conditions, and the generator installed capacity is assembled and operated. The dual power switch and current sensor intelligent control system can be used to connect to the mains grid and switch operation, reducing the load capacity of the mains power supply line and saving the cost of electricity use in cities, enterprises, and industrial and mining units.

[0017] Because the power generation medium is compressed air, energy conservation and zero emission reduction can be achieved, the line load during peak electricity consumption periods can be solved, and self-sufficiency can be achieved to reduce electricity costs. It is only necessary to install the generator sets in a distributed manner according to the power consumption, and solve the problem of power equipment nearby. Only a low-voltage distribution system is required, and no high-voltage long-distance transmission supporting equipment is required. It can be installed once and used for many years.

[0018] Change the energy storage method, use the photovoltaic power generation system to store the air compressor pressure in the air pressure tank, and combine the exhaust of the pneumatic motor to generate power to achieve the gas-electricity cycle. According to the shortcomings of high-voltage long-distance power transmission, such as maintenance, storage, and economic operation costs, this power generation system only needs a low-voltage operating system. The photovoltaic power generation system generates electricity to drive the air compressor through the valve body pipeline to convert it into high-pressure gas and store it in a decentralized assembled tank. Through the air pressure sensor, the pressure regulating valve pipeline and the control system are connected to the air motor, and the air pressure is used to control the air motor speed. When the air motor reaches a certain torque, it drives the magnetic suspension device to work and drive the generator set to generate electricity. In the process of power generation, you can choose to take power from the load end and connect it to the air compressor, use the low-power air compressor pressure to store energy, and drive the magnetic suspension inertia wheel device through the air motor to increase the torque stability before driving the generator set to generate electricity. In this way, a pressure cycle power generation system can be achieved. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the structure of the present invention; Figure 2 A schematic diagram of the structure of the air pressure cycle energy storage system of the present invention; Figure 3 Another structural schematic diagram of the air pressure cycle energy storage system of the present invention; Figure 4 The figure is a circuit control schematic diagram of the present invention. DETAILED DESCRIPTION

[0020] The present invention will be further described below in conjunction with the embodiments, but they are not intended to limit the present invention. Example

[0021] A new energy storage distributed air energy power station includes a photovoltaic energy storage power generation system and a gas pressure cycle energy storage system. The control circuit junction box of the photovoltaic energy storage power generation system is connected to the air compressor control box in the gas pressure cycle energy storage system. The electric energy of the photovoltaic energy storage power generation system is used to drive the air compressor of the gas pressure cycle energy storage system. The air compressor stores air in an air storage tank. The air storage tank is connected to an air motor through an air pipe, and the air motor is connected to a generator through a transmission mechanism.

[0022] There is no battery in the photovoltaic energy storage power generation system. When there is light, the photovoltaic panel is connected to the matching inverter to directly provide power to the air compressor of the air pressure cycle energy storage system. When the air pressure stores a certain value, the sensor controls the solenoid valve and the pressure regulating proportional valve to release 0.4 to 1 MPa air pressure to drive the motor to rotate and drive the generator set to generate electricity. In order not to be affected by the weather in the natural altitude area, when the generator set operates normally, a set of power is provided to the air compressor control box. The air pressure sensor and PLC programming and computer module regularly monitor the air compressor that needs to be driven to ensure that the air pressure in the gas tank is sufficient to achieve photovoltaic and air pressure cycle power generation conversion. According to demand, the photovoltaic energy storage power generation system can also add batteries.

[0023] The photovoltaic energy storage power generation system includes a photovoltaic panel, the photovoltaic panel is connected to an inverter, the inverter is connected to a control circuit combiner box, and the control circuit combiner box is connected to an air compressor control box.

[0024] It also includes a hydrogen storage fuel cell circulating energy storage power generation system, and the power of the hydrogen storage fuel cell circulating energy storage power generation system is transmitted to the air compressor control box. The hydrogen storage fuel cell circulating energy storage power generation system uses existing finished products, mainly including proton membrane electrolyzer hydrogen production equipment and fuel cell modules. Its function is to provide a stable power supply for the air compressor when photovoltaic power generation is insufficient, so as to achieve the reliability of circulating gas pressure energy storage. In the event of continuous rainy extreme weather in winter, or in extreme environments with severe lack of sunshine, it can replace photovoltaic power generation.

[0025] The transmission of pneumatic motors can be divided into two types: magnetic coupling and hydraulic electronic clutch.

[0026] The pneumatic motor of the pneumatic cycle energy storage system is connected to the inertia wheel through an electronic clutch, and the inertia wheel is connected to the input end of the generator through a transmission shaft and a hydraulic coupler.

[0027] The inertia wheel is connected to the pulley on the transmission shaft through a transmission belt, and can be linked by multiple pneumatic motors to increase power.

[0028] There are more than two generators, and a transfer case is provided at the input end of the generator.

[0029] The inertia wheel is driven by the pneumatic motor to rotate, and then connected to the generator through the hydraulic coupler to make the generator work. It can be used in charging piles, stations, industrial park factories, subways, bridges and tunnels, municipal street lights, civil buildings, etc. The excess electricity can also be input into the air compressor of the air pressure cycle energy storage system to store gas in the gas tank.

[0030] The pneumatic motor of the air pressure cycle energy storage system is connected to an inertia wheel, the inertia wheel is connected to a hybrid magnetic suspension bearing device, the hybrid magnetic suspension bearing device is arranged on a sliding track and connected to a telescopic cylinder, the inertia wheel is connected to one end of a magnetic coupler through a transmission shaft, and the other end of the magnetic coupler is connected to an input end of a generator.

[0031] The power of the generator set is determined by the user's power generation. For example, if a 15 to 40 kilowatt generator set is selected, magnetic coupling can be selected, and a 50 to 400 kilowatt generator set can be selected for magnetic levitation transmission structure.

[0032] like Figure 2 As shown, a pneumatic motor generator device used in a new energy storage distributed air energy power station includes a pneumatic motor, which is connected to an inertia wheel through an electronic clutch, and the inertia wheel is connected to the input end of the generator through a transmission shaft and a hydraulic coupler. When working, the starter motor first drives the inertia wheel to rotate and do work without load. When the rotation speed of the inertia wheel reaches a certain torque, it drives the generator to generate electricity through the transmission shaft and the hydraulic coupler.

[0033] Connect the N pole of the magnetic coupler through the permanent magnet base. The pneumatic motor, permanent magnet permanent inertia wheel, permanent magnet base, transmission shaft and magnetic N pole form a whole. like Figure 3 As shown, a pneumatic motor generator device used in a new energy storage distributed air energy power station includes a pneumatic motor, the pneumatic motor is connected to an inertia wheel, the inertia wheel is connected to a hybrid magnetic bearing device, the hybrid magnetic bearing device is arranged on a sliding track and connected to a telescopic cylinder, the inertia wheel is connected to one end of a magnetic coupler through a transmission shaft, and the other end of the magnetic coupler is connected to the input end of a generator. The hybrid magnetic bearing is a magnetic bearing formed by a mixture of permanent magnets and electromagnetics. When working, the starting motor first drives the inertia wheel to rotate and do work without load. When the rotation speed of the inertia wheel reaches a certain torque, the telescopic cylinder slowly approaches the other end of the magnetic coupler on its sliding track, and then drives the generator to generate electricity.

[0034] like Figure 4As shown, a circuit control schematic diagram of the present invention, the photovoltaic panels of the photovoltaic energy storage power generation system send current to the circuit junction box through the inverter, and the fuel cell module current of the hydrogen storage fuel cell circulating energy storage power generation system is also sent to the circuit junction box, and then transmitted to the air compressor through the air compressor control box to inflate the gas storage tank. The gas in the gas storage tank drives the pneumatic motor and the generator to generate electricity. The excess electric energy is sent to the proton membrane electrolyzer hydrogen production equipment through one of the power sources of the generator to prepare hydrogen and send it to the fuel cell module.

[0035] The gas storage tank is assembled into one by 4 or more gas storage tanks in a group. When the air pressure of the first group of gas storage tanks is full, the second group of air compressors are started in sequence to store air for the gas storage tanks, and so on, to perform air pressure circulation energy storage. One air compressor is designed for each group of gas storage tanks as shown in the figure. In the air compressor circuit intelligent control system, a sensor of corresponding air pressure value is designed in each tank, which is used in the air pressure energy storage intelligent control circuit. Solenoid valves and valve bodies can be used, and air pressure sensors are connected with AC contactor electrical components, PLC programming and other control systems can control the start and stop of air compressors to store air pressure energy in sequence. When the air pressure of the first group of air storage tanks reaches a certain value, the power supply of the first group of air compressors is turned off, and the power supply of the second group of air compressors is started. The power supplies of other air compressors are arranged in sequence. In order to ensure that the air compressor has a stable power supply for energy storage, the air compressor power supply is designed to be connected in parallel with the photovoltaic power generation, magnetic levitation power generation, and fuel cell chemical energy power generation circuit control box. The start and stop of the air compressor is intelligently controlled through current transformers, AC contactors, air pressure sensors and other electrical components to monitor the air pressure conditions of each group of air storage tanks, such as Figure 1 As shown. In order to effectively circulate the gas pressure energy storage system, the overall combined gas storage tank is generally designed to be more than four groups. When each group of gas storage tanks reaches a certain air pressure value, a group of gas storage tanks is connected to the gas source processing system, valve body, pipeline, and control, and then directly connected to the pneumatic motor to exhaust and work the drive system to connect to the generator to generate electricity. When the air pressure of the first group of gas storage tanks drops to a certain value, the valve body automatically closes, and the second group of gas storage tanks begins to control the valve body pipeline and then connect the pneumatic motor to exhaust and work, and then connect to the power generation system to generate electricity. Since the air compressor power supply is connected in parallel to the magnetic levitation generator power generation system, at this time, the first group of air compressors begins to store energy, and by analogy, an automatic circulation energy storage system can be achieved. According to the power generation requirements, a permanent magnet magnetic levitation inertia wheel device can be used to connect the transfer box to drive the generator set, or a hybrid magnetic levitation bearing can be used to drive the inertia wheel device to drive the transfer box to connect the generator set to generate electricity. The number of generator sets is matched according to the power consumption design.

Claims

1. A new energy storage distributed air energy power station, characterized by: It includes a photovoltaic energy storage power generation system and a gas pressure cycle energy storage system. The control circuit junction box of the photovoltaic energy storage power generation system is connected to the air compressor control box in the gas pressure cycle energy storage system. The electric energy of the photovoltaic energy storage power generation system is used to drive the air compressor of the gas pressure cycle energy storage system. The air compressor stores air in an air tank. The air tank is connected to the pneumatic motor through an air pipe, and the pneumatic motor is connected to the generator through a transmission mechanism.

2. The new energy storage distributed air energy power station according to claim 1 is characterized by: The photovoltaic energy storage power generation system includes a photovoltaic panel, the photovoltaic panel is connected to an inverter, and the inverter is connected to a control circuit junction box.

3. The new energy storage distributed air energy power station according to claim 1 is characterized by: It also includes a hydrogen storage fuel cell circulating energy storage power generation system, and the electric energy of the hydrogen storage fuel cell circulating energy storage power generation system is transmitted to the air compressor control box.

4. The new energy storage distributed air energy power station according to claim 1 is characterized by: The pneumatic motor of the pneumatic cycle energy storage system is connected to the inertia wheel through an electronic clutch, and the inertia wheel is connected to the input end of the generator through a transmission shaft and a hydraulic coupler.

5. The new energy storage distributed air energy power station according to claim 4 is characterized in that: The inertia wheel is connected to a pulley on the transmission shaft through a transmission belt.

6. The new energy storage distributed air energy power station according to claim 4 is characterized by: There are more than two generators, and a transfer case is provided at the input end of the generator.

7. The new energy storage distributed air energy power station according to claim 1 is characterized by: The pneumatic motor of the air pressure cycle energy storage system is connected to an inertia wheel, the inertia wheel is connected to a hybrid magnetic suspension bearing device, the hybrid magnetic suspension bearing device is arranged on a sliding track and connected to a telescopic cylinder, the inertia wheel is connected to one end of a magnetic coupler through a transmission shaft, and the other end of the magnetic coupler is connected to an input end of a generator.

8. A pneumatic motor generator used in a new energy storage distributed air energy power station, characterized in that: The invention comprises an air motor, which is connected to an inertia wheel through an electronic clutch, and the inertia wheel is connected to an input end of a generator through a transmission shaft and a hydraulic coupler.

9. A pneumatic motor generator used in a new energy storage distributed air energy power station, characterized in that: The invention comprises an air motor, which is connected to an inertia wheel, which is connected to a hybrid magnetic suspension bearing device, which is arranged on a sliding track and connected to a telescopic cylinder, the inertia wheel is connected to one end of a magnetic coupler through a transmission shaft, and the other end of the magnetic coupler is connected to an input end of a generator.

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