Gas turbine and light storage combined distributed new energy comprehensive allocation system

Abstract

The invention discloses a gas turbine and light storage combined distributed new energy comprehensive allocation system, and belongs to the technical field of gas turbines.The gas turbine and light storage combined distributed new energy comprehensive allocation system comprises a gas turbine, the gas turbine internally comprises a gas compressor, a combustion chamber, a turbine and a power generator, and a photo-thermal system is connected between the gas compressor and the combustion chamber; the exhaust end of the turbine is connected with a waste heat utilization system, and the output end of the generator is connected with a power supply system. By adopting the gas turbine and light storage combined distributed new energy comprehensive allocation system, efficient, clean, flexible and economical energy supply can be realized, and wide application of renewable energy sources and transformation of energy structures are promoted.

Description

Technical Field

[0001] The present invention relates to the technical field of gas turbines, and in particular to a distributed new energy comprehensive allocation system combining a gas turbine with photovoltaic energy storage. Background Art

[0002] In the existing technology, with the increasingly serious problems of environmental pollution and energy shortage, as well as the defects of traditional large-capacity centralized power supply, distributed power generation technology has attracted more and more attention. Distributed power generation has become a highly potential energy utilization method in the new energy power generation industry with its unique advantages. The rational development and utilization of distributed power sources has become an important measure to improve the economy and stability of power grid operation. Many power experts and scholars at home and abroad believe that incorporating distributed power generation systems into large power grid systems is a method that can effectively reduce energy consumption and improve the reliability and flexibility of the power grid. Connecting distributed power sources to the grid for power supply is the future development direction of my country's power industry.

[0003] Under the current trend of digital economic development, large-scale, high-energy-consuming, and high-carbon-emission industrial production is also facing the transformation towards energy conservation and carbon emission reduction. Therefore, the problems of high energy consumption and insufficient waste heat utilization in traditional industrial production processes need to be solved urgently. Summary of the invention

[0004] The purpose of the present invention is to provide a distributed new energy comprehensive dispatching system combining a gas turbine with photovoltaic storage, which can realize efficient, clean, flexible and economical energy supply, promote the widespread application of renewable energy and the transformation of energy structure.

[0005] To achieve the above-mentioned objectives, the present invention provides a distributed new energy comprehensive deployment system combining a gas turbine with photovoltaic storage, comprising a gas turbine, wherein the gas turbine internally comprises a compressor, a combustion chamber, a turbine and a generator, a photovoltaic system is connected between the compressor and the combustion chamber, a waste heat utilization system is connected to the exhaust end of the turbine, and a power supply system is connected to the output end of the generator.

[0006] Preferably, the photothermal system includes a photothermal module and a heat storage tank, and a heat exchanger is arranged inside the heat storage tank; the output end of the compressor is connected to the cold air input end of the heat exchanger through a pipeline, and the hot air output end of the heat exchanger is connected to the air input end of the combustion chamber through a pipeline.

[0007] Preferably, the output end of the compressor is connected to the air input end of the combustion chamber through a pipeline and a first valve is installed on the pipeline, a second valve is installed on the pipeline between the compressor and the cold air input end of the heat exchanger, and a third valve is installed on the pipeline between the hot air output end of the heat exchanger and the air input end of the combustion chamber.

[0008] Preferably, the heat storage tank is a tank body using a new generation of solid particle heat storage medium, and its heat storage temperature is 950°C.

[0009] Preferably, the waste heat utilization system includes at least one of a waste heat type lithium bromide unit, a waste heat hot water boiler, an ORC generator and a waste heat steam boiler.

[0010] Preferably, the steam output end of the waste heat steam boiler is connected to a steam turbine.

[0011] Preferably, the output end of the generator is connected to an energy storage system.

[0012] Preferably, the power supply system and the energy storage system are both connected to the power consumption end.

[0013] Therefore, the beneficial effects of the distributed new energy comprehensive allocation system using the above-mentioned gas turbine combined with photovoltaic storage in the present invention are: (1) Stable energy supply system: The entire system uses gas turbines as the only energy conversion device. The gas turbine can switch the front-end energy source at any time according to actual conditions (use solar thermal energy when there is sufficient solar thermal energy, and use fuel when there is insufficient solar thermal energy). Compared with systems using photovoltaic and wind energy, it has higher stability and high power quality, and does not require a large power grid or a large amount of energy storage to smooth out the volatility of renewable energy.

[0014] (2) Truly realize multi-energy complementarity and comprehensive energy supply: The fuel side can be supplied in a variety of ways (solar energy, diesel, methanol, hydrogen, associated gas, etc., flexibly allocated according to customer site conditions), improving the flexibility and stability of the system; the output side realizes multiple energy outputs such as electricity, cold / heat, steam, etc., greatly improving the overall energy efficiency of the system.

[0015] (3) Balancing environmental protection and flexibility: When switching to fuel, methanol and hydrogen can be used to reduce dependence on fossil fuels, thereby reducing greenhouse gas emissions and promoting environmental protection; diesel and associated gas can also be used to improve the adaptability of the distributed new energy comprehensive deployment system.

[0016] (4) During periods of insufficient sunlight or peak load, gas turbines can be quickly activated to ensure the continuity and reliability of power supply.

[0017] (5) By reducing dependence on traditional energy, reducing operating costs, and improving energy efficiency, economic benefits can be enhanced.

[0018] (6) The regulation capability of the energy storage system helps balance the load of the microgrid and improve the stability and safety of the entire power system.

[0019] (7) It will help promote the research and development and application of related technologies and promote the advancement of new energy and smart grid technologies.

[0020] The technical solution of the present invention is further described in detail below through the accompanying drawings and embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a structural schematic diagram of an embodiment of a distributed new energy comprehensive allocation system combining a gas turbine with photovoltaic storage according to the present invention.

[0022] Reference numerals 1. Gas turbine; 2. Photothermal module; 3. Heat storage tank; 4. Heat exchanger; 5. First valve; 6. Second valve; 7. Third valve; 8. Compressor; 9. Combustion chamber; 10. Turbine; 11. Generator; 12. Power supply system; 13. Energy storage system; 14. Power consumption end; 15. Waste heat utilization system; 16. Waste heat lithium bromide unit; 17. Waste heat hot water boiler; 18. ORC generator; 19. Waste heat steam boiler; 20. Steam turbine. DETAILED DESCRIPTION

[0023] The technical solution of the present invention is further described below through the accompanying drawings and embodiments.

[0024] Unless otherwise defined, the technical terms or scientific terms used in the present invention should be understood by people with ordinary skills in the field to which the present invention belongs. The words "first", "second" and similar words used in the present invention do not indicate any order, quantity or importance, but are only used to distinguish different components. "Include" or "comprise" and similar words mean that the elements or objects appearing before the word include the elements or objects listed after the word and their equivalents, without excluding other elements or objects. "Connect" or "connected" and similar words are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "Up", "down", "left", "right" and the like are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0025] Embodiment 1 like Figure 1 As shown, the present invention provides a distributed new energy integrated deployment system combining a gas turbine with photovoltaic storage, including a gas turbine 1. The gas turbine 1 is a common structure in the traditional prior art. The gas turbine 1 includes a compressor 8, a combustion chamber 9, a turbine 10, a generator 11 and corresponding temperature and pressure sensors. Since they are all prior art, they will not be described in detail.

[0026] In this embodiment, a photothermal system is connected between the compressor 8 and the combustion chamber 9, which can heat the high-pressure gas discharged from the compressor 8 to a certain extent. The photothermal system includes a photothermal module 2 and a heat storage tank 3. The heat storage tank 3 is a tank body using a new generation of solid particle heat storage medium, and its heat storage temperature is as high as 950°C, which can effectively store the heat converted by the photothermal module 2. Compared with the heat storage temperature of 650°C of the traditional heat storage tank, it can achieve longer time and larger scale energy storage, and can more efficiently utilize the energy generated by the photothermal module 2.

[0027] A heat exchanger 4 is provided inside the heat storage tank 3, the output end of the compressor 8 is connected to the cold air input end of the heat exchanger 4 through a pipeline, and the hot air output end of the heat exchanger 4 is connected to the air input end of the combustion chamber 9 through a pipeline. This structure allows the high-pressure gas discharged from the compressor 8 to fully exchange heat with the heat storage tank 3, so that the air entering the combustion chamber 9 has a higher initial temperature, thereby reducing the use of fuel to a certain extent.

[0028] In addition, the output end of the compressor 8 is connected to the air input end of the combustion chamber 9 through a pipeline, and a first valve 5 is installed on the pipeline, a second valve 6 is installed on the pipeline between the compressor 8 and the cold air input end of the heat exchanger 4, and a third valve 7 is installed on the pipeline between the hot air output end of the heat exchanger 4 and the air input end of the combustion chamber 9. It can be seen from the above structure that by changing the open or closed state of different valves, the path of the high-pressure gas discharged from the compressor 8 can be changed, so that the adjustment of different working modes of the entire system can be achieved.

[0029] The exhaust end of the turbine 10 is connected to a waste heat utilization system 15, through which the waste heat utilization system 15 can reuse the high-temperature and high-pressure exhaust gas discharged by the turbine 10, thereby achieving full utilization of energy, improving energy utilization efficiency, and enhancing economic benefits.

[0030] The waste heat utilization system 15 includes at least one of a waste heat type lithium bromide unit 16, a waste heat hot water boiler 17, an ORC generator 18 and a waste heat steam boiler 19. The steam output end of the waste heat steam boiler 19 is connected to a steam turbine 20.

[0031] The output end of the generator 11 is connected to a power supply system 12 and an energy storage system 13, and both the power supply system 12 and the energy storage system 13 are connected to a power consumption end 14. During actual use, the excess electricity generated by the gas turbine 1 can be stored in the energy storage system 13 according to the actual power demand of the power consumption end 14. When the power consumption end 14 needs electricity, it is preferentially drawn from the energy storage system 13, thereby realizing reasonable scheduling of energy and avoiding energy waste.

[0032] The specific operation strategies are as follows: (1) When the solar heat is sufficient, the medium in the heat storage tank 3 is heated to a high temperature by the solar heat module 2, the first valve 5 is closed, the second valve 6 and the third valve 7 are opened, and the high-pressure gas from the compressor 8 directly enters the heat storage tank 3, exchanges heat with the high-temperature heat storage medium through the heat exchanger 4 and heats up, then enters the combustion chamber 9, and then enters the turbine 10 from the combustion chamber 9 and drives the generator 11 to work and output electricity to the outside. At the same time, the gas coming out of the tail of the turbine 10 after work has a certain temperature, which can drive the waste heat utilization system 15 for secondary utilization, thereby realizing the comprehensive allocation and utilization of energy. During operation, the actual temperature condition required at the turbine 10 can be judged in real time according to the power demand of the power consumption end 14, and then the combustion state of the fuel in the combustion chamber 9 can be adjusted to meet the power supply demand.

[0033] (2) When the solar heat is insufficient, the first valve 5 is opened, the second valve 6 and the third valve 7 are closed, and the high-pressure gas from the compressor 8 directly enters the combustion chamber 9, so that the high-pressure gas has a small pressure decay, and is heated by the combustion of fuel (which can be diesel, methanol, hydrogen, or associated gas), and then enters the turbine 10 and drives the generator 11 to work, outputting electricity to the outside. At the same time, the gas coming out of the tail of the turbine 10 after doing work has a certain temperature, and can still drive the waste heat utilization system 15 for secondary utilization, thereby realizing the comprehensive allocation and utilization of energy.

[0034] Therefore, the present invention adopts the above-mentioned distributed new energy comprehensive allocation system combining a gas turbine with photovoltaic storage, which can achieve efficient, clean, flexible and economical energy supply, promote the widespread application of renewable energy and the transformation of energy structure.

[0035] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that they can still modify or replace the technical solution of the present invention with equivalents, and these modifications or equivalent replacements cannot cause the modified technical solution to deviate from the spirit and scope of the technical solution of the present invention.

Claims

1. A distributed new energy integrated deployment system combining gas turbines with photovoltaic energy storage, characterized in that: It comprises a gas turbine, which comprises a compressor, a combustion chamber, a turbine and a generator. A photothermal system is connected between the compressor and the combustion chamber, a waste heat utilization system is connected to the exhaust end of the turbine, and a power supply system is connected to the output end of the generator.

2. According to claim 1, a distributed new energy integrated dispatching system combining a gas turbine and photovoltaic storage is characterized by: The photothermal system includes a photothermal module and a heat storage tank, and a heat exchanger is arranged inside the heat storage tank; the output end of the compressor is connected to the cold air input end of the heat exchanger through a pipeline, and the hot air output end of the heat exchanger is connected to the air input end of the combustion chamber through a pipeline.

3. A distributed new energy comprehensive deployment system combining gas turbine and photovoltaic storage according to claim 2, characterized in that: The output end of the compressor is connected to the air input end of the combustion chamber through a pipeline and a first valve is installed on the pipeline, a second valve is installed on the pipeline between the compressor and the cold air input end of the heat exchanger, and a third valve is installed on the pipeline between the hot air output end of the heat exchanger and the air input end of the combustion chamber.

4. A distributed new energy comprehensive deployment system combining gas turbine and photovoltaic storage according to claim 2, characterized in that: The heat storage tank is a tank body using a new generation of solid particle heat storage medium, and its heat storage temperature is 950°C.

5. According to claim 1, a distributed new energy comprehensive deployment system combining gas turbine and photovoltaic storage is characterized by: The waste heat utilization system includes at least one of a waste heat type lithium bromide unit, a waste heat hot water boiler, an ORC generator and a waste heat steam boiler.

6. A distributed new energy comprehensive deployment system combining gas turbine and photovoltaic storage according to claim 5, characterized in that: The steam output end of the waste heat steam boiler is connected to a steam turbine.

7. According to claim 1, a distributed new energy comprehensive deployment system combining gas turbine and photovoltaic storage is characterized by: The output end of the generator is connected to an energy storage system.

8. A distributed new energy comprehensive deployment system combining gas turbine and photovoltaic storage according to claim 7, characterized in that: The power supply system and the energy storage system are both connected to the power consumption end.

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