CN113357694A - Multi-energy coupling energy storage and supply system - Google Patents
Multi-energy coupling energy storage and supply system Download PDFInfo
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
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- F24D11/02—Central heating systems using heat accumulated in storage masses using heat pumps
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- F24D11/0221—Central heating systems using heat accumulated in storage masses using heat pumps water heating system combined with solar energy
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- F24D11/02—Central heating systems using heat accumulated in storage masses using heat pumps
- F24D11/0214—Central heating systems using heat accumulated in storage masses using heat pumps water heating system
- F24D11/0235—Central heating systems using heat accumulated in storage masses using heat pumps water heating system with recuperation of waste energy
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
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- F24S60/10—Arrangements for storing heat collected by solar heat collectors using latent heat
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Abstract
A multi-energy coupling energy storage and supply system comprises a basic heat source region, a heat storage region, a photovoltaic power generation power supply region, a frequency modulation peak regulation energy storage region and an electrochemical energy storage region, wherein the basic heat source region comprises a geothermal source and a heat pump, and the geothermal source, the heat pump and a heat energy pipe network are connected; the heat storage area comprises a low-temperature phase change heat storage unit, the low-temperature phase change heat storage unit is connected with a heat energy pipe network and stores heat energy output by a heat pump through the heat energy pipe network; the photovoltaic power generation power supply area comprises a solar power generation module, the solar power generation module absorbs solar energy and converts the solar energy into electric energy, and the electric energy is connected with a power supply network; the frequency modulation and peak regulation energy storage area comprises a reversible solid oxide fuel cell, the solid oxide fuel cell performs electrolysis hydrogen production on electric energy from a power supply network and stores the electric energy into hydrogen energy, and outputs hydrogen generated by electrolysis and fuel of a natural gas pipe network to generate new electric energy, and the new electric energy is connected with the power supply network and performs frequency modulation and peak regulation on the power supply network; the electrochemical energy storage area comprises a flow battery, and the flow battery is connected with the frequency modulation and peak regulation energy storage area.
Description
Technical Field
The invention relates to the technical field of energy collection and supply, in particular to a multi-energy coupling energy storage and supply system.
Background
The increasingly mature and popular renewable clean energy sources such as solar heat collection, photovoltaic power generation, intermediate-deep geothermal energy, hydrogen energy and the like are distributed energy utilization modes which have application prospects and are greatly popularized by various governments and enterprises in China at present. However, solar heat collection and photovoltaic power generation or intermediate-deep geothermal energy as a single stable energy supply form have disadvantages. On one hand, the distributed new energy such as solar energy has the characteristics of volatility and intermittence, the stable application and popularization of the technology are hindered, and with the goal of 30/60 carbon emission reduction, each energy group is more tightened to build a photovoltaic power station, which inevitably causes huge hidden danger to the future power grid safety, and causes a great deal of energy waste due to the phenomena of light abandonment and the like in some places; on the other hand, the intermediate-deep geothermal heating cannot be applied in a large scale due to the fact that resources are not matched with actual requirements and development cost is relatively high. In recent years, with the development and progress of scientific technology, the electricity-consuming cost of solar photovoltaic power generation and the like is lower and higher, and meanwhile, the reversible system (R-SOC) including a solid oxide fuel cell in the energy storage technology is mature, so that the possibility is provided for the multi-energy coupling technology such as geothermal energy, solar energy and the like.
Meanwhile, with the increase of the demand and the dependence of the society on electricity utilization, people have higher and higher pursuit on beautiful life, and the energy safety will be more and more prominent in the future. The practical problems and requirements of the energy industry are combined, how to comprehensively utilize energy, reduce the operation cost and provide clean, safe, high-quality and economic energy is a problem which is urgently needed to be solved by the industry at present.
Disclosure of Invention
The invention aims to provide a multi-energy coupling energy storage and supply system aiming at the defects of the prior art, and the key point of solving the problems is to adopt a plurality of comprehensive energy combination technologies such as cascade utilization and heat storage. The intelligent energy utilization system is used for exchanging with an information network (Internet) by adopting a partitioned management idea and combining an intelligent instrument. Energy technology and internet of things information are integrated, and the method realizes the following steps: the cheap valley electricity is used for pumping geothermal water for heat storage to realize day storage and regulation, an intelligent heat storage method is used for graded heat storage, high-grade and high-temperature heat in the R-SOC system is utilized in a graded mode, the thermoelectric ratio of the system is regulated and controlled, bidirectional operation is achieved, night storage and day release, summer storage and winter release, emergency storage and the like are achieved, and reasonable and efficient use of an energy system is achieved. Meanwhile, electrochemical energy storage technologies such as a flow battery and the like are used as standby means for R-SOC bidirectional operation frequency modulation and frequency modulation, so that the operation cost is reduced, the economic benefit is improved, and meanwhile, the power supply and heat supply quality is guaranteed.
In order to achieve the purpose, the invention adopts the following technical scheme:
a multi-energy coupling energy storage and supply system comprises a basic heat source area, a heat storage area, a photovoltaic power generation and supply area, a frequency modulation and peak regulation energy storage area and an electrochemical energy storage area,
the basic heat source area comprises a geothermal source and a heat pump, and the geothermal source, the heat pump and the heat energy pipe network are sequentially connected;
the heat storage area comprises a low-temperature phase-change heat storage unit, the low-temperature phase-change heat storage unit is connected with a heat energy pipe network and stores heat energy output by the heat pump through the heat energy pipe network;
the photovoltaic power generation power supply area comprises a solar power generation module, the solar power generation module absorbs solar energy and converts the solar energy into electric energy, and the electric energy is connected with a power supply network;
the frequency modulation and peak regulation energy storage area comprises a reversible solid oxide fuel cell, the solid oxide fuel cell performs electrolysis hydrogen production on electric energy from a power supply network and stores the hydrogen energy, and outputs hydrogen generated by electrolysis and fuel of a natural gas pipe network to generate new electric energy, and the new electric energy is connected with the power supply network to perform frequency modulation and peak regulation on the power supply network;
the electrochemical energy storage area comprises a flow battery, and the flow battery is connected with the frequency modulation and peak regulation energy storage area.
Further, the geothermal source may be one or more of a sewage source, an industrial waste heat source, and a river (a water source having a depth of 4 m to a depth of a constant temperature layer).
Furthermore, the geothermal source can be freely combined according to actual conditions, for example, geothermal wells are adopted to provide heat sources, exploration needs to be carried out in advance to ensure reliable cooperation of geothermal sources, and if no heat source which can be replaced by a buried pipe or other forms is available, the geothermal source can be replaced by other forms of heat sources or the blocks can be removed if the local geothermal resource conditions are not met.
Furthermore, the basic heat source area further comprises a geothermal water pipeline, a primary plate heat exchanger and a secondary plate heat exchanger, and the geothermal well comprises a production well and a recharge well;
the production well is connected with the primary plate heat exchanger, and hot water on the secondary side is connected with a heat supply pipe network and enters the heat supply pipe network; the water outlet of the primary plate type heat exchanger, the secondary plate type heat exchanger and the recharge well are sequentially connected, hot water on the secondary side of the secondary plate type heat exchanger is connected with a heat pump, and the heat pump is connected with a heat energy pipe network.
Further, basic heat supply area still includes middle water circulating pump, the heat accumulation area still includes high temperature phase transition heat-retaining unit, millet electricity hot water unit, and solar power module still includes solar collector, the input of low temperature phase transition heat-retaining unit is connected with solar collector's output, millet electricity hot water unit respectively, stores the heat energy of solar collector, millet electricity hot water unit output, the output of low temperature phase transition heat-retaining unit and middle water circulating pump, solar collector's input connect gradually, high temperature phase transition heat-retaining unit and hot water pipe network connection.
Further, the outlet temperature of geothermal water of the geothermal source is above 70 ℃.
Furthermore, the solar power generation module adopts a general crystalline silicon photovoltaic panel (mature technology and stable service life) or a perovskite type (flexible and strong weak light effect) building photovoltaic panel or other novel high-efficiency photovoltaic panels (such as perovskite and crystalline silicon laminated photovoltaic panels).
Furthermore, the solar power generation module is also connected with the solid oxide fuel cell/electrolytic cell, the electric energy converted by the solar power generation module can also be used for electrolytic hydrogen production of the solid oxide fuel cell/electrolytic cell, the produced hydrogen can be reversely led into the solid oxide fuel cell for power generation, wherein the solid oxide fuel cell/electrolytic cell is a same set of system which can be bidirectionally and reversibly operated simultaneously, and a high-quality power output, stable and safe power generation module is formed by the solid oxide fuel cell reversible system and the photovoltaic power generation module.
Furthermore, the frequency modulation peak regulation energy storage area is also connected with a heat energy pipe network, and a heat source generated in the power generation process of the frequency modulation peak regulation energy storage area is used as a supplementary heat source of the heat energy pipe network.
Further, the heat storage temperature of the low-temperature phase change heat storage area is 60-80 ℃.
The energy technology of the 5 blocks that use is comparatively advanced neotype environmental protection, safe energy supply technology, and wherein geothermal energy is for getting heat from the underground, gets heat and does not get water, can not cause the destruction to the ground bottom environment. Moreover, for the areas without geothermal resources, constant-temperature liquid layers such as sewage sources, industrial waste heat, rivers and the like can be adopted, so that the applicability is wide; photovoltaic power generation is environment-friendly and quiet; compared with the traditional power generation technology, the fuel cell power generation and electrolysis technology has almost no noise, does not discharge any toxic and harmful gas pollutants, and selects a mature and novel photovoltaic power generation technology; the flow battery is also a technical route with relatively high safety coefficient, relatively low cost and strong expansibility of energy storage capacity in all energy storage batteries.
The intelligent energy management system has the advantages that various energy loops of heat, electricity, gas, information and the like are managed and controlled by adopting a block chain thought (controlled by using the Internet), energy blocks of 5 blocks are relatively independent, information exchange, communication and control are not directly carried out, intelligent instruments installed on main roads, branch roads, network load ends and the like of the loops are directly connected with the Internet through an independent information network, an intermediate information control center of the Internet realizes monitoring, calculation and distribution of inflow and outflow of energy, the defects that the traditional blocks carry out cross communication redundancy and inefficiency and the defects that global information control and optimization cannot be realized are eliminated at one time; the control efficiency and the convenience of information intercommunication are greatly improved, and the optimal energy utilization is realized by organically integrating advanced technologies such as the Internet of things, an energy network and block management.
By adopting the technical scheme of the invention, the invention has the beneficial effects that: the system adopts distributed or centralized energy supply which can be mainly used for geothermal heating; especially, the residual heat energy storage and the R-SOC residual heat utilization are utilized in multiple stages, so that the basic load of geothermal heating is ensured; the multi-energy utilization of geothermal energy, solar energy, valley electricity and hydrogen energy is realized; the energy supply flexibility of the energy storage system is increased; the system has strong adaptability, and the investment can be also determined according to different energy advantages of different areas, and partial composition areas or subordinate modules and the like of the system are selected according to local conditions to be configured so as to reduce the investment cost of energy storage and supply.
Drawings
FIG. 1 is a schematic structural diagram of a multi-energy coupling energy storage and supply system;
FIG. 2 is a schematic flow diagram of a basic heat source zone;
FIG. 3 is a schematic diagram of energy conversion of a high temperature phase change thermal storage unit.
Detailed Description
The embodiments of the present invention will be further explained with reference to the drawings, so that the technical solutions can be more clearly and clearly understood. The raw materials, equipment, devices and control methods used in the present embodiment are all those commonly used in the art, unless otherwise specified.
As shown in fig. 1, the present embodiment relates to a multi-energy coupling energy storage and supply system, which includes 5 large areas: the system comprises a basic heat source area (geothermal well), a heat storage area (comprising low-temperature phase change heat storage), a photovoltaic power generation power supply area, a frequency modulation peak-shaving energy storage area (R-SOC, a bidirectional solid oxide fuel cell/electrolytic cell system) and an electrochemical energy storage area, wherein the overall arrangement of heat, electricity, gas, a plurality of loops and the internet for information control is realized through 5 large areas. Wherein:
the basic heat source area comprises a geothermal source and a heat pump, and the geothermal source, the heat pump and the heat energy pipe network are sequentially connected;
the heat storage area comprises a low-temperature phase-change heat storage unit, the low-temperature phase-change heat storage unit is connected with a heat energy pipe network and stores heat energy output by the heat pump through the heat energy pipe network;
the photovoltaic power generation power supply area comprises a solar power generation module, the solar power generation module absorbs solar energy and converts the solar energy into electric energy, and the electric energy is connected with a power supply network;
the frequency modulation peak regulation energy storage area comprises a reversible solid oxide fuel cell, wherein the solid oxide fuel cell/an electrolytic cell inputs electric energy from a power supply network to perform electrolysis hydrogen production and store the hydrogen energy, outputs the hydrogen produced by electrolysis and fuel of a natural gas pipe network to perform power generation to generate new electric energy, and the new electric energy is connected with the power supply network to perform direct connection response on the power supply network to achieve the aims of frequency modulation and peak regulation;
the electrochemical energy storage area comprises a flow battery, and the flow battery is connected with the frequency modulation and peak regulation energy storage area;
and the information control center of the Internet is respectively connected with the five areas to carry out information communication and is also connected and communicated with each pipeline heat energy pipe network, the power supply network and the natural gas pipe network.
In the embodiment, a solar power generation and supply area is provided for directly supplying power by electric energy, a bidirectional solid oxide fuel cell/electrolytic cell system is also provided for standby energy power generation (for temporary use when photovoltaic power generation is insufficient and the electricity price is high), and meanwhile, a heat source generated by an R-SOC system in the power generation process of burning hydrogen/hydrocarbon fuel and the like can also be used as a supplementary heat source for geothermal heating and the like; in order to ensure sufficient economy of the entire system, an electrochemical storage region is provided for ensuring a rapid response of short-term charge and discharge, charge and discharge efficiency, capacity, and the like, in addition to a heat storage unit provided with a short-term heat storage region. Each block is correspondingly provided with an intelligent instrument to complete hybrid energy supply or multi-energy coupling; managing a demand side; and managing power network access.
In the basic heat source area, geothermal tail water is subjected to heat energy lifting through a heat pump by adopting the cooperation of a geothermal well of a geothermal source (the temperature of the heat source is more than 70 ℃), and the generated heat energy is merged into a heat energy pipe network for providing heat energy in a heat supply district area to supply heat for residents at the user side.
The heat storage area is mainly provided with a low-temperature phase change heat storage unit, and surplus heat energy of a heat supply pipe network such as geothermal surplus heat, valley electricity hot water areas (including an electric boiler), hot water of a solar heat collector and the like can be stored in the phase change heat storage area, so that the heat supply pipe network capacity is supplemented when the heat supply pipe network is insufficient in heat supply capacity. Because at present, the real-time monitoring of the electricity price can not be realized temporarily, and the command is set through the information control center, when the valley electricity is calculated and the high economy of the heating demand can be met, the intelligent switch of the electric boiler is started to start the valley electricity heat storage according to the set specific time.
The photovoltaic power generation power supply area converts absorbed solar energy into electric energy, the electric energy is directly merged into a power supply network, parameters such as electric energy frequency, voltage and power of the power supply network are monitored in real time by utilizing the internet and related equipment, and the demand of the power load is integrally balanced by an information control center of the internet. The electric energy is used for directly supplying power for other systems or supplying power for a frequency modulation peak regulation energy storage area for energy storage.
The R-SOC region (frequency modulation peak regulation energy storage region) of the embodiment is reversible in two directions and can run for a long time, generally, due to the fact that natural gas is introduced, an SOC system has high economical efficiency, and under the condition that the price of the natural gas is 2.4 yuan/square, the cost of once electricity fuel can be lower than 4 wool and is lower than the current market price. When the load demand is high, the illumination is insufficient, and the price of the natural gas is economical, the SOC system is used as a stable power supply source, the natural gas is continuously introduced to generate power, and the most economical power resource is provided for a residential area or an industrial and commercial economic area. The high-efficiency power generation is realized under the condition that the natural gas price is more cost-effective, generally speaking, the power generation efficiency of an R-SOC system can reach more than 55%, and even can reach more than 65% after the system is operated to carry out thermoelectric ratio allocation, which is far higher than that of the existing gas generator set based on Carnot cycle, and greatly improves the energy economy. And high-grade heat energy generated by the R-SOC provides multiple interfaces, realizes waste heat utilization, can be connected with a large-temperature-difference refrigerating system and the like, and has the capacity of providing cold, heat and electricity triple supply.
The flow battery is used as an electricity storage module which is surplus in electric energy and is used as a standby energy storage module when the economy of R-SOC electrolytic hydrogen production is insufficient, and generally works in a 50% charging state, so that the flow battery has the maximum adjustment allowance and the service life of the flow battery is ensured.
The energy cost of each block, the operation input and output parameters and the operation flexibility (such as minimum and maximum operation power, operation time, maintenance time, energy conversion efficiency and the like) of each system are input and set in the information control center, the unit of energy price measurement such as yuan/kWh or yuan/kJ and the like is unified, the optimal operation mode of each block is calculated through a model, and the operation instructions (starting, stopping, power and the like) of equipment are issued, so that the whole distributed energy supply system operates in the optimal mode.
The gas circuit is mainly supplied with gas by a natural gas pipe network, but when the distributed local area network has surplus power and the price of the national power grid is not high, the R-SOC system can convert the surplus power into hydrogen energy in the process of preparing hydrogen by electrolysis, and the hydrogen can be stored for power generation when the power is insufficient, and can also be directly merged into the natural gas pipe network for residents to use. The information control center of the internet can perform calculation and evaluation based on big data, input and output information and the like, and finally determines whether the hydrogen is merged into a natural gas pipe network or stored.
Electricity in the power supply network is mainly derived from three sources: photovoltaic power generation, R-SOC system power generation (burning hydrogen/burning natural gas), the electricity of national grid mainly have four to: user side load requirements (including power required for operation of a network information control system, a basic heat source system and the like); the method comprises the steps of providing a national power grid, carrying out online (when system power is rich and the economy of online electricity price is considerable; an electric boiler stores heat (when the heat storage requirement is met and the economy is sufficient), carrying out R-SOC electrolysis hydrogen production (when the economy is sufficient), setting priority according to the input and output requirements of power when an information control center monitors the quality and the power of electric energy, and continuously sending instructions to adjust so as to ensure the safety, economy and reliability of power utilization.
The heat source of the heating loop is from geothermal heat, R-SOC waste heat and an electric boiler (valley electricity heat storage), and a waste heat interface of a photovoltaic heat collector can also be arranged. The heat source output is primarily a customer-side demand. The R-SOC system has higher operation temperature, about 650 plus 700 ℃, and higher other hot tastes, and can be externally connected with a temperature difference refrigerating system (the prior mature technology) for refrigerating in the period without heating demand and refrigerating demand.
Fig. 2 shows a configuration of a specific basic heat source area, where the basic heat source area further includes a geothermal water pipeline, a primary plate heat exchanger, a secondary plate heat exchanger, and the like, and the geothermal well includes a production well and a recharging well; the production well is connected with the primary plate heat exchanger, and hot water on the secondary side is connected with a heat supply pipe network and enters the heat supply pipe network; the water outlet of the primary plate type heat exchanger, the secondary plate type heat exchanger and the recharge well are sequentially connected, hot water on the secondary side of the secondary plate type heat exchanger is connected with a heat pump, and the heat pump is connected with a heat energy pipe network. The basic heat source area still includes middle water circulating pump, the heat accumulation area still includes high temperature phase transition heat-retaining unit, millet electricity hot water unit (electric boiler), and solar power module still includes solar collector, the input of low temperature phase transition heat-retaining unit is connected with solar collector's output, millet electricity hot water unit respectively, stores the heat energy of solar collector, millet electricity hot water unit output, the output of low temperature phase transition heat-retaining unit and middle water circulating pump, solar collector's input connect gradually, high temperature phase transition heat-retaining unit and hot water pipe network connection.
After determining the desired heating zone and the base heat source, geothermal heat is taken as the base heat source as an example. For example, geothermal heating is carried out by taking water from a production well and entering the water into a primary plate heat exchanger for heat exchange; and the tail water enters the secondary plate heat exchanger again for heat exchange, and then returns to the recharge well to be recharged to the stratum water taking layer after being treated by gas filtering and the like. The hot water on the secondary side of the primary plate heat exchanger is directly sent to a user side for heating; and the water heated at the secondary side of the secondary plate type heat exchanger is heated by the heat pump and then enters the user side for heating. And the user side circulating water pump of the user side heating and water returning well returns to the heat pump main machine for closed circulation again. On one hand, by the aid of the heat storage device, the valley electricity can be used for heating electric boilers, the solar heat collectors such as the waste heat of an R-SOC system and the like can be used for heating user side return water, the low-temperature phase change heat storage device is used for storing heat, energy supply such as daily use or supplement and adjustment of daily heat supply capacity can be achieved, heat energy is utilized to the maximum extent, power of a production well and a heat pump is adjusted, and operating electricity charge of equipment is reduced. On the other hand, the photovoltaic power generation system and the liquid flow battery electricity storage module are integrated, the photovoltaic power generation system can directly supply power to system equipment, redundant power supplies in the weather with sufficient illumination store heat for high-grade energy through a high-temperature phase change heat storage device, cross-season heat storage is realized, energy supply is realized, and the photovoltaic power generation system can also be directly connected to a power grid; the redundant power supply can also store power through the storage battery module so as to deal with the power utilization in an emergency state and the stability of a power supply system. The high-grade energy refers to electric power, mechanical work, fuel gas, liquid fuel and the like, and is relative to energy which is not easy to utilize and easy to cause waste.
The geothermal source in this embodiment may also be one or more of a sewage source, industrial waste heat, and a river. The heat source temperature of the geothermal source is above 70 ℃.
The solar power generation module in the photovoltaic power generation power supply area adopts a crystalline silicon photovoltaic panel or a perovskite type building photovoltaic panel or other novel high-efficiency photovoltaic panels (such as perovskite and crystalline silicon laminated photovoltaic panels). The solar power generation module is also connected with the solid oxide fuel cell, and the electric energy converted by the solar power generation module can be used for the electrolytic hydrogen production of the solid oxide fuel cell.
In a preferred production mode, the frequency modulation and peak regulation energy storage area is further connected with a heat energy pipe network, and a heat source generated in the power generation process of the frequency modulation and peak regulation energy storage area is used as a supplementary heat source of the heat energy pipe network.
The heat storage temperature of the low-temperature phase change heat storage area in the embodiment is 60-80 ℃, and preferably 70 ℃.
As shown in fig. 3, a specific multi-energy conversion and function mode is that a photovoltaic power generation supply area generates electric energy, a storage battery electricity storage module stores the electric energy, the electric energy can be used for directly supplying power to each device of a heating system during heating, and the electric energy can be incorporated into a power supply network during heating; the heat energy generated by the photovoltaic power generation power supply area can be stored in the high-temperature chemical heat storage container and used for releasing heat to provide high-grade energy.
It is to be noted that the foregoing is only illustrative of the preferred embodiments of the present invention and the technical principles employed. It will be understood by those skilled in the art that the present invention is not limited to the particular embodiments described herein, but is capable of various obvious changes, rearrangements and substitutions as will now become apparent to those skilled in the art without departing from the scope of the invention. Therefore, although the present invention has been described in greater detail by the above embodiments, the present invention is not limited to the above embodiments, and may include other equivalent embodiments without departing from the spirit of the present invention, and the scope of the present invention is determined by the scope of the appended claims.
Claims (10)
1. A multi-energy coupling energy storage and supply system is characterized by comprising a basic heat source area, a heat storage area, a photovoltaic power generation power supply area, a frequency modulation and peak regulation energy storage area and an electrochemical energy storage area,
the basic heat source area comprises a geothermal source and a heat pump, and the geothermal source, the heat pump and the heat energy pipe network are sequentially connected;
the heat storage area comprises a low-temperature phase-change heat storage unit, the low-temperature phase-change heat storage unit is connected with a heat energy pipe network and stores heat energy output by the heat pump through the heat energy pipe network;
the photovoltaic power generation power supply area comprises a solar power generation module, the solar power generation module absorbs solar energy and converts the solar energy into electric energy, and the electric energy is connected with a power supply network;
the frequency modulation and peak regulation energy storage area comprises a reversible solid oxide fuel cell, the solid oxide fuel cell performs electrolysis hydrogen production on electric energy from a power supply network and stores the hydrogen energy, and outputs hydrogen generated by electrolysis and fuel of a natural gas pipe network to generate new electric energy, and the new electric energy is connected with the power supply network to perform frequency modulation and peak regulation on the power supply network;
the electrochemical energy storage area comprises a flow battery, and the flow battery is connected with the frequency modulation and peak regulation energy storage area.
2. The system of claim 1, wherein the geothermal source is one or more of a sewage source, an industrial waste heat source, and a river, wherein the river requires a water source at least 4 meters deep to have a constant temperature layer.
3. The multi-energy coupled energy storage and supply system according to claim 1 or 2, wherein the geothermal source provides a heat source using a geothermal well.
4. The multi-energy coupling energy storage and supply system according to claim 3, wherein the base heat source zone further comprises geothermal water pipelines, primary plate heat exchangers and secondary plate heat exchangers, and the geothermal well comprises a production well and a recharge well;
the production well is connected with the primary plate heat exchanger, and hot water on the secondary side is connected with a heat supply pipe network and enters the heat supply pipe network; the water outlet of the primary plate type heat exchanger, the secondary plate type heat exchanger and the recharge well are sequentially connected, hot water on the secondary side of the secondary plate type heat exchanger is connected with a heat pump, and the heat pump is connected with a heat energy pipe network.
5. The multi-energy coupling energy storage and supply system according to claim 4, wherein the basic heat source region further comprises an intermediate water circulating pump, the heat storage region further comprises a high-temperature phase-change heat storage unit and a valley electricity hot water unit, the solar power generation module further comprises a solar heat collector, an input end of the low-temperature phase-change heat storage unit is respectively connected with an output end of the solar heat collector and the valley electricity hot water unit to store heat energy output by the solar heat collector and the valley electricity hot water unit, an output end of the low-temperature phase-change heat storage unit is sequentially connected with the intermediate water circulating pump and an input end of the solar heat collector, and the high-temperature phase-change heat storage unit is connected with a hot water pipe network.
6. The multi-energy coupling energy storage and supply system according to claim 1, wherein the geothermal water outlet temperature of the geothermal source is above 70 ℃.
7. The multi-energy coupled storage and supply system according to claim 1, wherein said solar power module is a single crystal silicon photovoltaic panel or a perovskite type architectural photovoltaic panel or a laminated photovoltaic panel such as perovskite and crystalline silicon.
8. The multi-energy coupling energy storage and supply system according to claim 1, wherein the solar power generation module is further connected with a solid oxide fuel cell or an electrolysis cell, and surplus electric energy converted by the solar power generation module can be used for hydrogen production by electrolysis of the solid oxide fuel cell or the electrolysis cell.
9. The multi-energy coupling energy storage and supply system according to claim 1, wherein the frequency modulation peak regulation energy storage area is further connected with a heat energy pipe network, and a heat source generated in the power generation process of the frequency modulation peak regulation energy storage area is used as a supplementary heat source of the heat energy pipe network.
10. The multi-energy coupling energy storage and supply system of claim 1, wherein the heat storage temperature of the low-temperature phase change heat storage area is 60-80 ℃.
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113819510A (en) * | 2021-11-23 | 2021-12-21 | 浙江陆特能源科技股份有限公司 | Zero-emission heating system with middle-deep geothermal energy coupled with solar energy |
| CN114069723A (en) * | 2021-12-03 | 2022-02-18 | 华北电力大学 | Management method and device for new energy power generation system of hydrogen-containing gas turbine |
| CN114322046A (en) * | 2021-12-10 | 2022-04-12 | 中国华能集团清洁能源技术研究院有限公司 | Heating device and heat storage method of step heat storage electric boiler |
| CN114497663A (en) * | 2021-12-30 | 2022-05-13 | 北京和瑞储能科技有限公司 | Deep well heat exchange type flow battery system based on geothermal energy |
| CN117254528A (en) * | 2023-09-11 | 2023-12-19 | 南京工程学院 | Multi-energy complementary power generation peak regulation system and peak regulation method |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113819510A (en) * | 2021-11-23 | 2021-12-21 | 浙江陆特能源科技股份有限公司 | Zero-emission heating system with middle-deep geothermal energy coupled with solar energy |
| CN113819510B (en) * | 2021-11-23 | 2022-04-15 | 中国地质科学院水文地质环境地质研究所 | Zero-emission heating system with middle-deep geothermal energy coupled with solar energy |
| CN114069723A (en) * | 2021-12-03 | 2022-02-18 | 华北电力大学 | Management method and device for new energy power generation system of hydrogen-containing gas turbine |
| CN114069723B (en) * | 2021-12-03 | 2023-11-24 | 华北电力大学 | Management method and device for new energy power generation system of hydrogen-containing gas turbine |
| CN114322046A (en) * | 2021-12-10 | 2022-04-12 | 中国华能集团清洁能源技术研究院有限公司 | Heating device and heat storage method of step heat storage electric boiler |
| CN114497663A (en) * | 2021-12-30 | 2022-05-13 | 北京和瑞储能科技有限公司 | Deep well heat exchange type flow battery system based on geothermal energy |
| CN117254528A (en) * | 2023-09-11 | 2023-12-19 | 南京工程学院 | Multi-energy complementary power generation peak regulation system and peak regulation method |
| CN117254528B (en) * | 2023-09-11 | 2024-02-20 | 南京工程学院 | Multi-energy complementary power generation peak regulation system and peak regulation method |
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