Source-network-load-storage integrated comprehensive energy system based on winery park and operation method

Abstract

The invention relates to the technical field of energy recycling, in particular to a winery park source network load storage integrated comprehensive energy system and an operation method. A steam supply system with natural gas, roof photovoltaic, roof photo-thermal, a high-temperature water source heat pump, electric steam storage and a biogas steam boiler and a cold / heat and hot water supply system with a sewage source heat pump, a gas-fired boiler, an air source heat pump and a PVT assembly are constructed, in addition, a light-storage direct-flexible system is constructed in a winery, photovoltaic, energy storage, factory area power utilization and direct-current power distribution are interconnected through the flexible interaction technology, and the energy storage effect is achieved. And an alternating current and direct current power distribution fused light storage and charging direct flexible system is constructed, so that energy conservation, efficiency improvement and green transformation of wine making energy are promoted.

Description

Technical Field

[0001] The present invention relates to the technical field of energy recycling, and specifically to a comprehensive energy system and operation method based on the integration of source, grid, load and storage in a winery park. Background Art

[0002] The winemaking process is mainly divided into sorghum crushing, moistening, steaming, fermentation, distillation, fermentation, distillation, etc. The winery uses air cooling or circulating water cooling devices in the cooling stage of winemaking and distillation. According to the survey, there are a lot of waste heat resources in the winemaking process that have not been effectively utilized.

[0003] In addition, the large-scale production of liquor is accompanied by the production of a huge amount of by-product - distiller's grains. According to field surveys of distilleries and relevant literature, the ratio of liquor output to distiller's grains output is approximately 1:3.3. How to make full use of the distillery's distiller's grains resources is also a focus of current research.

[0004] In the traditional winery energy supply system, various sectors and energy supply forms are independent of each other or partially related, the collaborative control logic is simple, and the design goal is often based on single-point static supply capacity. There are problems such as low energy utilization efficiency, waste of resources, large capacity of various energy supply facilities, and high investment.

[0005] At present, both at home and abroad, a lot of efforts have been made in low-carbon winemaking. However, there are few cases of large-scale recovery of waste heat from Zhenguoliujiu. Low-carbon functional integrated systems are mainly based on the installation of photovoltaics and coal and gas-to-electricity technologies, and there are few comprehensive energy utilization steam production systems.

[0006] In view of this, the present invention is proposed. Summary of the invention

[0007] The purpose of the present invention is to provide an integrated energy system and operation method based on the integration of source, grid, load and storage in a winery park. Through the system's integrated energy multi-energy coordinated optimization configuration, the system optimization configuration scheme of steam supply technologies such as solar energy, winery waste heat, and high-efficiency high-temperature electric heat pumps is focused on, so as to achieve technical transformation of energy conservation and emission reduction in the steam heat supply system for brewing. By making full use of resources such as vacant roofs of wineries, laying out photovoltaic power generation facilities, and replacing part of the fossil energy consumption, a "light-storage-direct-flexible" efficient renewable energy consumption power system is constructed. The new waste heat high-temperature heat pump technology is adopted to further improve the level of recovery and utilization of waste heat from brewing by electrically driven heat pumps. Steam products are produced by high-temperature waste heat heat pumps to replace part of the fossil energy consumption, increase the steam source of the enterprise, ensure the safety of steam supply, and build a new energy system suitable for the green and low-carbon development of brewing enterprises.

[0008] To achieve one of the above purposes, the present invention provides the following technical solutions:

[0009] Based on the integrated energy system of the winery park with source, grid, load and storage, including photovoltaic, storage, direct and flexible system, steam supply system, cooling / heating and hot water supply system;

[0010] The solar-storage direct-flexible system includes solar energy, photovoltaic modules, factory electricity, energy storage power stations, solar thermal collectors, electric steam storage, high-temperature water source heat pumps, sewage source heat pumps, and air source heat pumps;

[0011] The steam supply system includes distiller's grains, natural gas, biogas boiler, first gas boiler, solar collector, electric steam storage, high-temperature water source heat pump, waste heat recovery device, gas boiler, wine making steam, and steam storage;

[0012] The cooling / heating and hot water system includes sewage energy, a second gas boiler, a sewage source heat pump, an air source heat pump, a PVT photovoltaic thermal integrated heat pump, domestic hot water, plant heating, plant cooling, and hot water storage.

[0013] Preferably, the solar energy is respectively connected to a solar collector, a PVT photovoltaic-thermal integrated heat pump, and a photovoltaic module.

[0014] Preferably, the photovoltaic module is connected to a high-temperature water source heat pump and electric steam storage.

[0015] Preferably, the photovoltaic module is also connected to a sewage source heat pump and an air source heat pump.

[0016] Preferably, the natural gas is connected to the first gas boiler and the second gas boiler respectively.

[0017] Preferably, the sewage can be connected to a biogas boiler and a sewage source heat pump respectively.

[0018] Preferably, the photovoltaic storage direct-flexible system includes state grid municipal power, and the photovoltaic modules are connected to the state grid municipal power through distribution transformers.

[0019] Preferably, in the cooling / heating and hot water supply system:

[0020] Sewage can be connected to sewage heat pumps, which are connected to factory heating and factory cooling respectively;

[0021] The second gas boiler is connected to the factory area for heating;

[0022] PVT photovoltaic-thermal integrated heat pump and air source heat pump are connected to domestic hot water.

[0023] Preferably, in the steam supply system:

[0024] The lees are connected to the first gas-fired boiler, which produces steam for brewing;

[0025] The high-temperature water source heat pump is connected to the waste heat recovery device to produce wine-making steam;

[0026] Biogas boilers can produce steam for brewing wine from sewage.

[0027] To achieve the second of the above objectives, the present invention provides the following technical solutions:

[0028] Long-term heat storage: When the winery is in operation, solar energy supplies solar thermal collectors with light and heat for brewing steam; when the winery is shut down, the solar thermal collectors absorb solar radiation energy, heat water to 90-95°C through medium heat exchange, and send the hot water to the underground heat storage device for storage through the heat storage primary side circulating water pump. After the production and office start, the heat exchange is used to provide domestic hot water load for the park or to preheat the steam for brewing;

[0029] Short-cycle heating: During the 16-hour daily production period, photovoltaic modules provide power load for high-temperature water source heat pumps, electric steam storage, sewage source heat pumps, and air source heat pumps. The insufficient power is supplemented by the municipal power of the State Grid. During the 8-hour daily shutdown period, the energy storage batteries are charged through photovoltaic modules and the municipal power of the State Grid.

[0030] PVT photovoltaic / photothermal integrated heat storage: PVT photovoltaic / photothermal integrated heat pump uses solar radiation to convert light into heat through the collector to produce hot water for the domestic hot water load of the factory area; the waste heat is sent to the underground heat storage device for storage through the heat storage primary side circulating water pump.

[0031] Compared with the prior art, the present invention provides an integrated energy system and operation method based on the integrated source, grid, load and storage of the winery park. Without affecting the traditional winemaking process, the present invention constructs a steam supply system of "natural gas + rooftop photovoltaic + rooftop solar thermal + high-temperature water source heat pump + electric steam storage + biogas steam boiler" and a cooling / heating and hot water supply system of "sewage source heat pump + gas boiler + air source heat pump + PVT component". In addition, a "photovoltaic storage direct and flexible" system is constructed in the winery, and photovoltaic, energy storage, factory electricity and DC power distribution are interconnected through flexible interactive technology to construct a photovoltaic storage charging direct and flexible system that integrates AC and DC power distribution. Promote energy saving and efficiency improvement and green transformation of winemaking energy.

[0032] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, preferred embodiments are given below and described in detail with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for use in the embodiments are briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without creative work.

[0034] Figure 1 A schematic diagram of the structural framework of a comprehensive energy system integrating source, grid, load and storage based on a winery park is provided in an embodiment of the present invention.

[0035] Figure 2 A process diagram of a long-period heat storage system in an operation method of a comprehensive energy system integrating source, grid, load and storage in a winery park provided in an embodiment of the present invention.

[0036] Figure 3 A process diagram of a short-cycle power storage system in an operation method of a comprehensive energy system integrating source, grid, load and storage in a winery park provided in an embodiment of the present invention.

[0037] Figure 4 A process diagram of a PVT photovoltaic / solar thermal integrated heat storage control operation method in an operation method of a comprehensive energy system integrating source, grid, load and storage in a winery park provided in an embodiment of the present invention.

[0038] The diagram is as follows:

[0039] 01. Steam supply system; 02. Solar energy storage direct and flexible system; 03. Cooling / heating and hot water supply system.

[0040] 101. Wine lees; 102. Natural gas; 103. Solar energy; 104. Sewage energy.

[0041] 201. Biogas boiler; 202. First gas boiler; 203. Solar collector; 204. Electric steam storage; 205. High-temperature water source heat pump; 206. Waste heat recovery device; 207. Photovoltaic module; 208. State Grid municipal power; 209. Second gas boiler; 210. Sewage source heat pump; 211. Air source heat pump; 212. PVT photovoltaic thermal integrated heat pump.

[0042] 301. Steam for brewing; 302. Electricity for the factory; 303. Heating for the factory; 304. Cooling for the factory; 305. Domestic hot water.

[0043] 401. Steam storage; 402. Electricity storage; 403. Hot water storage. DETAILED DESCRIPTION

[0044] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. The components of the embodiments of the present invention generally described and shown in the drawings here can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the present invention provided in the drawings is not intended to limit the scope of the claimed invention, but merely represents the selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without making creative work belong to the scope of protection of the present invention.

[0045] like Figure 1 As shown, the embodiment of the present invention provides a comprehensive energy system based on the source-grid-load-storage integration of the winery park, which is composed of three systems: a photovoltaic storage direct-flexible system 02, a steam supply system 01, and a cooling / heating and hot water supply system 03. The three systems are respectively composed as follows:

[0046] The photovoltaic storage direct-flexible system 02 includes solar energy 103, photovoltaic modules 207, State Grid municipal electricity 208, factory electricity 302, energy storage power station, solar energy 103 collector, electric steam storage 204, high-temperature water source heat pump 205, sewage source heat pump 210, and air source heat pump 211.

[0047] The steam supply system 01 includes wine lees, natural gas 102, a biogas boiler 201, a first gas boiler 202, a solar energy 103 collector, electric steam storage 204, a high-temperature water source heat pump 205, a waste heat recovery device 206, a gas boiler, wine making steam 301, and steam storage 401.

[0048] The cooling / heating and hot water system 03 includes sewage energy 104, a second gas boiler 209, a sewage source heat pump 210, an air source heat pump 211, a PVT photovoltaic thermal integrated heat pump 212, domestic hot water 305, plant heating 303, plant cooling 304, and hot water storage 403.

[0049] In the photovoltaic storage direct-flexible system 02, solar energy 103 is connected to the solar energy 103 collector in the steam supply system 01 through a1 to supply solar thermal steam for wine making 301; solar energy 103 is connected to the PVT photovoltaic-photothermal integrated heat pump through a2 to supply solar thermal domestic hot water 305; solar energy 103 supplies solar thermal power generation to the photovoltaic module 207 through a3, and the photovoltaic module 207 is connected to the high-temperature water source heat pump 205 and the electric power storage steam 204 in the steam supply system 01 through a4 and a7 to produce steam for wine making 301. In addition, the photovoltaic module 207 is also connected to the sewage source heat pump 210 and the air source heat pump 211 in the cooling / heating and hot water supply system 03 through a5 and a6. In order to make full use of photovoltaic energy storage and realize peak shaving and valley filling, the factory area electricity 302 is provided for emergency power supply to important loads, and another part of the electricity is connected to the energy storage power station to charge it, and the excess electricity is connected to the AC distribution network through the distribution transformer and sold to the State Grid Municipal Power 208.

[0050] In the steam supply system 01, distiller's grains are used as biomass raw materials to produce biomass natural gas 102, which is used to produce steam for making wine 301 through the first gas boiler 202. Natural gas 102 is connected to the first gas boiler 202 through b1 to provide natural gas 102 for producing steam for making wine 301. The photovoltaic module 207 is connected to the electric steam storage 204 in the steam supply system 01 through a4 to produce steam for making wine 301. At the same time, the photovoltaic module 207 is connected to the waste heat recovery device 206 through a7 and the high-temperature water source heat pump 205 to recycle the steam for making wine 301. In addition, the steam supply system 01 recovers the methane-rich biogas in the sewage energy 104 to supply the biogas boiler 201 to produce steam for making wine 301, and uses the built-in seamless pressure-bearing technology of the solar thermal collector to store steam 401.

[0051] The cooling / heating and hot water system 03 includes a heating system, a cooling system and a domestic hot water 305 system; in the heating system, the sewage treated by the sewage treatment station is sent to the sewage source heat pump 210 to meet the basic load of the plant heating 303; the second gas boiler 209 in the boiler room provides steam as the primary side medium, and heat is exchanged through the heat exchanger to further meet the plant heating 303; in the cooling system, the sewage treated by the sewage treatment station is sent to the sewage source heat pump 210 system to meet the cooling load of the winery office area; in the domestic hot water 305 system, solar energy 103 photovoltaic power generation and PVT photovoltaic thermal integrated heat pump 212 are used to produce domestic hot water 305, and the air source heat pump 211 is used as an auxiliary heat source to ensure a continuous and stable supply of heat.

[0052] In the present invention, the source, grid, load and storage of the winery are respectively composed as follows:

[0053] Sources: wine slurry 101, natural gas 102, solar energy 103, sewage energy 104.

[0054] Network: biogas boiler 201, first gas boiler 202, solar energy 103 collector, electric steam storage 204, high temperature water source heat pump 205, waste heat recovery device 206, photovoltaic module 207, State Grid municipal electricity 208, second gas boiler 209, sewage source heat pump 210, air source heat pump 211, PVT photovoltaic thermal integrated heat pump 212.

[0055] He: Steam for wine making 301, electricity for factory area 302, heating for factory area 303, cooling for factory area 304, domestic hot water 305.

[0056] Storage: steam storage 401, electricity storage 402, hot water storage 403.

[0057] In the present invention, the comprehensive energy system includes multiple energy-consuming sections such as power supply, gas supply, heating, cooling and industrial steam, and each section has multiple energy supply forms such as photovoltaic power generation, power grid power supply, power storage 402 equipment, waste heat utilization, electric drive heat pump, pipeline natural gas 102, etc. In the traditional energy supply system, each section and energy supply form is independent of each other or partially related, the collaborative control logic is simple, and the design goal is often based on single-point static supply capacity. There are problems such as low energy utilization efficiency, waste of resources, large capacity of various energy supply facilities, and high investment. In order to build a new energy system for the brewing industry, according to the energy demand and characteristics of the winery, to ensure that the wine company can smoothly achieve the development goals of carbon peak and carbon neutrality, combined with the maturity, reliability and advancement of low-carbon energy technology, the present invention focuses on the coordinated optimization configuration of comprehensive energy multi-energy in the brewing process, and focuses on solving the system optimization configuration scheme of steam supply technologies such as solar energy 103, winery waste heat, and high-efficiency high-temperature electric heat pumps, so as to realize the technical transformation of energy conservation and emission reduction of brewing steam thermal energy supply system. By making full use of the unused roofs of the winery and other resources, photovoltaic power generation facilities are deployed to replace part of the fossil energy consumption, and a "light-storage-direct-flexible" high-efficiency renewable energy consumption power system is constructed. The new waste heat high-temperature heat pump technology is adopted to further improve the level of waste heat recovery and utilization in winemaking by electrically driving the heat pump. The high-temperature waste heat heat pump is used to produce steam products, replace part of the fossil energy consumption, increase the steam source of the enterprise, ensure the safety of steam supply, and build a new energy system suitable for the green and low-carbon development of winemaking enterprises.

[0058] The embodiment of the present invention also provides an operation method based on the integrated energy system of source-grid-load-storage integration in a winery park, which is mainly implemented by three systems:

[0059] like Figure 2As shown in the figure, the long-cycle heat storage system uses solar energy to supply solar collectors with thermal energy for brewing steam during the working period of the winery. In the summer months of June, July and August, when the winery is shut down, the solar collectors absorb solar radiation energy when the solar radiation is abundant, heat the water to 90-95°C through medium heat exchange, and then send it to the underground heat storage device through the primary side circulating water pump for storage. After the production and office start, it provides domestic hot water load for the park through heat exchange or is used for steam preheating.

[0060] like Figure 3 As shown in the figure, the short-cycle heating system, when the production is stopped for 8 hours a day, in order to make full use of photovoltaic energy storage, realize peak shaving and valley filling, and provide emergency power supply for important loads in the winery, the energy storage battery is charged through photovoltaic power in the winery and the mains. During the 16-hour production period, the daily power consumption is coupled with the photovoltaic power generation, and the photovoltaic power is consumed to provide power loads for other equipment in the factory area such as high-temperature water source heat pumps, electric steam storage, electric winery self-use electricity, heating and cooling, and domestic hot water systems, and the insufficient power is supplemented by the mains.

[0061] like Figure 4 As shown in the figure, the PVT photovoltaic / photothermal integrated heat storage control operation method, the PVT photovoltaic / photothermal integrated heat pump uses solar radiation to convert light into heat through the collector, raising the low-grade thermal energy to a higher grade (55°C) to produce hot water for the domestic hot water load of the plant area. If there is excess heat, it is sent to the underground heat storage device through the heat storage primary side circulating water pump to be stored for heating the park.

[0062] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside", etc. indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, or the positions or positional relationships in which the product of the invention is usually placed when in use. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific position, be constructed and operated in a specific position, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", "third", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0063] In addition, the terms "horizontal", "vertical", "overhanging" and the like do not mean that the components are required to be absolutely horizontal or overhanging, but can be slightly tilted. For example, "horizontal" only means that its direction is more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0064] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0065] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention. It should be noted that similar numbers and letters represent similar items in the following drawings. Therefore, once an item is defined in one drawing, it does not need to be further defined and explained in the subsequent drawings.

Claims

1. Based on the integrated energy system of source, grid, load and storage in the winery park, it is characterized by: Including solar energy storage direct and flexible system, steam supply system, cooling / heating and hot water system; The solar-storage direct-flexible system includes solar energy, photovoltaic modules, factory electricity, energy storage power stations, solar thermal collectors, electric steam storage, high-temperature water source heat pumps, sewage source heat pumps, and air source heat pumps; The steam supply system includes distiller's grains, natural gas, biogas boiler, first gas boiler, solar collector, electric steam storage, high-temperature water source heat pump, waste heat recovery device, gas boiler, wine making steam, and steam storage; The cooling / heating and hot water system includes sewage energy, a second gas boiler, a sewage source heat pump, an air source heat pump, a PVT photovoltaic thermal integrated heat pump, domestic hot water, plant heating, plant cooling, and hot water storage.

2. According to claim 1, a comprehensive energy system based on the integration of source, grid, load and storage in a winery park is characterized in that: The solar energy is respectively connected to a solar thermal collector, a PVT photovoltaic-thermal integrated heat pump, and a photovoltaic module.

3. According to claim 2, a comprehensive energy system based on the integration of source, grid, load and storage in a winery park is characterized in that: The photovoltaic modules are connected to a high-temperature water source heat pump and electric power steam storage.

4. According to claim 3, a comprehensive energy system based on the integration of source, grid, load and storage in a winery park is characterized in that: The photovoltaic module is also connected to a sewage source heat pump and an air source heat pump.

5. According to claim 4, a comprehensive energy system based on the integration of source, grid, load and storage in a winery park is characterized in that: The natural gas is connected to the first gas boiler and the second gas boiler respectively.

6. The integrated energy system based on the source-grid-load-storage integration of the winery park according to claim 5 is characterized in that: The sewage can be connected to a biogas boiler and a sewage source heat pump respectively.

7. The integrated energy system based on the source-grid-load-storage integration of the winery park according to claim 6 is characterized in that: The photovoltaic storage direct-flexible system includes the State Grid municipal power, and the photovoltaic modules are connected to the State Grid municipal power through distribution transformers.

8. The integrated energy system based on the source-grid-load-storage integration of the winery park according to claim 7 is characterized in that: In the cooling / heating and hot water supply system: Sewage can be connected to sewage heat pumps, which are connected to factory heating and factory cooling respectively; The second gas boiler is connected to the factory area for heating; PVT photovoltaic-thermal integrated heat pump and air source heat pump are connected to domestic hot water.

9. The integrated energy system based on the source-grid-load-storage integration of the winery park according to claim 8 is characterized in that: In the steam supply system: The lees are connected to the first gas-fired boiler, which produces steam for brewing; The high-temperature water source heat pump is connected to the waste heat recovery device to produce wine-making steam; Biogas boilers can produce steam for brewing wine from sewage.

10. The operation method of the integrated energy system based on the source-grid-load-storage integration of the winery park is characterized by: The steps include: Long-term heat storage: When the winery is in operation, solar energy supplies solar thermal collectors with light and heat for brewing steam; when the winery is shut down, the solar thermal collectors absorb solar radiation energy, heat water to 90-95°C through medium heat exchange, and send the hot water to the underground heat storage device for storage through the heat storage primary side circulating water pump. After the production and office start, the heat exchange is used to provide domestic hot water load for the park or to preheat the steam for brewing; Short-cycle heating: During the 16-hour daily production period, photovoltaic modules provide power load for high-temperature water source heat pumps, electric steam storage, sewage source heat pumps, and air source heat pumps. The insufficient power is supplemented by the municipal power of the State Grid. During the 8-hour daily shutdown period, the energy storage batteries are charged through photovoltaic modules and the municipal power of the State Grid. PVT photovoltaic / photothermal integrated heat storage: PVT photovoltaic / photothermal integrated heat pump uses solar radiation to convert light into heat through the collector to produce hot water for the domestic hot water load of the factory area; the waste heat is sent to the underground heat storage device for storage through the heat storage primary side circulating water pump.

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