CN209558703U - A kind of photovoltaic and photothermal hybrid power system - Google Patents
A kind of photovoltaic and photothermal hybrid power system Download PDFInfo
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- CN209558703U CN209558703U CN201920021476.1U CN201920021476U CN209558703U CN 209558703 U CN209558703 U CN 209558703U CN 201920021476 U CN201920021476 U CN 201920021476U CN 209558703 U CN209558703 U CN 209558703U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/40—Solar thermal energy, e.g. solar towers
- Y02E10/46—Conversion of thermal power into mechanical power, e.g. Rankine, Stirling or solar thermal engines
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/50—Photovoltaic [PV] energy
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Abstract
A kind of photovoltaic and photothermal hybrid power system, including photovoltaic plant, the photo-thermal power station containing heat accumulation subsystem, heat-storage medium electric heating subsystem and heat-storage medium auxiliary fuel heating subsystem.Heat-storage medium electric heating subsystem heats photo-thermal power station heat-storage medium using the electric power of photovoltaic plant, and then generates electric power by photo-thermal power station turbine LP rotors.Heat-storage medium auxiliary fuel heating subsystem can guarantee that photo-thermal power station has sufficient energy source to guarantee stable electric power output.Pass through photovoltaic and photothermal mixed power generation subsystem, the electric power that photovoltaic plant when low power consumption can not be passed out to power grid is temporarily stored by heat accumulation subsystem, it discharges heat again at peak to generate electricity, plays the role of peak load regulation network, can be very good the waste for avoiding the energy.
Description
Technical field
The utility model relates to solar energy generation technology fields, and in particular to a kind of photovoltaic and photothermal hybrid power system.
Background technique
In recent years, since photovoltaic power generation has the advantages that photoelectric conversion efficiency is high, at low cost, China's photovoltaic power generation is achieved
Great development, but since solar irradiation is completely uncontrollable and it is difficult to predict the cloud cover solar irradiations occurred once in a while
Lead to the fluctuation of photovoltaic power generation, and photovoltaic plant can not work completely after the sunset.Photovoltaic generation power fluctuation reaches certain
When degree, it will lead to network voltage and generate apparent fluctuation, and then destroy the stability of power grid.Therefore the peace in order to ensure power grid
Entirely with stabilization, there is " abandoning light " phenomenon, cause huge energy waste and economic loss in many areas.
In order to enhance the stability of photovoltaic plant, most common mode is exactly that battery is used to store electric power, but due to ring
It protects and the problem of cost, battery is difficult to obtain large-scale application.
It is preferably regional in solar irradiation condition, other than being suitble to build photovoltaic plant, photo-thermal power station can also be built.Band
The photo-thermal power station of heat accumulation can overcome solar irradiation variation and Changes in weather situation, provide stable power supply, and have
Good fast velocity modulation load-bearing capacity, but cost of electricity-generating is higher.
Mixed power generation subsystem is set up based on photovoltaic power generation, photo-thermal power generation, cost of electricity-generating can be effectively reduced, and improve defeated
The stability of electric power out.
Utility model content
Feature at low cost for photovoltaic power generation, stability is poor and photo-thermal power generation is at high cost, stability is good, proposes one kind
Photovoltaic and photothermal hybrid power system, photovoltaic power generation and photo-thermal power generation are be combined with each other, and are had complementary advantages, and are reduced " abandoning light " phenomenon, are mentioned
The stability of high output power.
The technical scheme adopted by the utility model is that: a kind of photovoltaic and photothermal hybrid power system, it is characterised in that including light
Overhead utility, the photo-thermal power station 1 containing heat accumulation subsystem, heat-storage medium electric heating subsystem 15 and the heating of heat-storage medium auxiliary fuel
Subsystem 16.
Photo-thermal power station feature described in 1. be include solar energy light gathering and heat collecting subsystem 11, heat accumulation subsystem, steam generation
Subsystem 13 and turbine LP rotors 14.Liquid water becomes water by the heating of high-temperature heat-storage medium in steam generation subsystem 13
Steam, and then enter turbine LP rotors 14 and generate electric power, vapor becomes liquid after the acting of turbine LP rotors 14
Water, and then complete thermodynamic cycle.
2. the electric power that photovoltaic plant 2 described in generates passes through autonomous control subsystem 3, it can be achieved that electric power is to power grid 4, photo-thermal
The automatic switchover of power station station-service electronic system, heat-storage medium electric heating subsystem 15.
3. heat-storage medium electric heating subsystem described in includes but is not limited to built-in infiltration type, external contactless and built-in
It is external hybrid.
The heat-storage medium heating subsystem of the built-in wetting contact formula is made of inside and outside multilayer sleeve structure form.
The external contactless heat-storage medium heating subsystem is located in the insulating layer of bypass heating tank (123), by
Electromagnetic heating coil composition.
4. auxiliary fuel system and electric heating system pass through switch block respectively and the low-temperature storage tank of photo-thermal power station connects.
That is, passing through the control of switch block (such as valve), the heat-storage medium electric heating subsystem (15) and heat accumulation are situated between
Matter auxiliary fuel heating subsystem (16) can work respectively, can also work at the same time.
5. heat accumulation subsystem described in includes low-temperature storage tank (122), high temperature storage tank (121) and bypass heating tank (123).It is low
200-350 DEG C of heat-storage medium is stored in warm storage tank (122), and 350-650 DEG C of heat-storage medium, bypass are stored in high temperature storage tank (121)
Heating tank (123) can be composed in series by multiple small storage tanks.
6. heat-storage medium described in is one of nitrate, concrete and (or) heat chemistry medium or a variety of mixtures.
7. photo-thermal power station station-service electronic system power source described in includes but is not limited to photovoltaic plant, photo-thermal power station, electricity
Net.
8. heat-storage medium electric heating subsystem power source described in includes but is not limited to photovoltaic plant, power grid.
The fuel source of heat-storage medium auxiliary fuel heating subsystem described in 9. include but is not limited to natural gas, diesel oil,
Biomass.
Detailed description of the invention
Fig. 1 is photovoltaic and photothermal hybrid power system structural schematic diagram；
Fig. 2 is heat-storage medium electric heating system schematic diagram.
Specific embodiment
The utility model is described in further detail below in conjunction with the drawings and specific embodiments.
The utility model develops a kind of photovoltaic and photothermal mixed power generation subsystem, the structural schematic diagram of the subsystem such as Fig. 1
It is shown, including the photo-thermal power station 1 containing heat accumulation subsystem, photovoltaic plant 2, heat-storage medium electric heating subsystem 15 and heat-storage medium
Auxiliary fuel heating subsystem 16.
Photovoltaic plant 2 converts the solar into electric power by several photovoltaic cell components, by autonomous control subsystem 3,
Electric power can be achieved to power grid 4, the automatic switchover of photo-thermal power station station-service electronic system, heat-storage medium electric heating subsystem 15.
It please illustrate that autonomous control subsystem is the new subsystem of an existing subsystem or oneself stand-alone development
System, for example individual suggestions please illustrate, for example so-and-so autonomous control subsystem can realize the function.
It is automatic that existing change distribution automatic control system, power auto-control system, PLC can be used in autonomous control subsystem
The automatic switchover and distribution of one or more realization photovoltaic plant electric power of control system.
Photo-thermal power station 1 containing heat accumulation subsystem is assembled solar irradiation by solar energy light gathering and heat collecting subsystem 11
Come, heat-storage medium absorbs the high-temperature heat-storage medium that heat is heated to be 350-650 DEG C inside it, subsequently into heat accumulation subsystem
High temperature storage tank 121, high-temperature heat-storage medium from high temperature storage tank 121 flow out, into steam generation subsystem 13, high-temperature heat-storage medium
Heat occurs in steam generation subsystem 13 with device of working medium to exchange, the high-temperature heat-storage medium after heat release becomes 200-350 DEG C
Low temperature heat-storage medium returns to the low-temperature storage tank 122 in heat accumulation subsystem.The water conservancy project after heat is absorbed in steam generation subsystem
Qualitative change is the vapor of high temperature and pressure, generates electric power into turbine LP rotors.
Low temperature heat-storage medium is flowed out from low-temperature storage tank 122, enters Salar light-gathering collection by valve 17 and the control of valve 18
The flow of thermal sub-system 11 and bypass heating tank (123), is then heated high temperature heat-storage medium.
Bypass heating tank 123 and heat-storage medium electric heating subsystem (15) and heat-storage medium auxiliary fuel heating subsystem
(16) it combines, heat-storage medium electric heating subsystem power source includes but is not limited to photovoltaic plant, power grid, heat-storage medium auxiliary combustion
The fuel source for expecting heating subsystem includes but is not limited to natural gas, diesel oil, biomass.
Heat-storage medium electric heating subsystem includes but is not limited to built-in infiltration type, external contactless and built-in external mixing
Formula.The heat-storage medium heating subsystem of built-in wetting contact formula is made of inside and outside multilayer sleeve structure form.It is external contactless
Heat-storage medium heating subsystem be located at bypass heating tank (123) insulating layer in, be made of electromagnetic heating coil.
When solar irradiation is lower compared with strong and network load, by autonomous control subsystem, preferentially by photo-thermal power station performance
Stable electric power is exported to power grid, and the electric power of photovoltaic plant is sent to heat-storage medium electric heating subsystem, is stored up energy by heat
It stores away.When network load demand increases and photo-thermal power station is unable to satisfy power output, by autonomous control subsystem by photovoltaic electric
The electric power stood is exported to power grid, if not being able to satisfy power grid still at this time meets demand, starting heat-storage medium auxiliary fuel heats subsystem
System 16 heats heat-storage medium as photo-thermal power station and provides energy.
In no solar irradiation, i.e., when photovoltaic plant unregulated power exports, use the high-temperature heat-storage medium in high temperature storage tank 121
Heat is provided for photo-thermal power station, when high-temperature heat-storage dielectric dissipation is complete and power grid is there is still a need for when load, starting heat-storage medium auxiliary is fired
Expect heating subsystem 16, heats heat-storage medium, provide heat for photo-thermal power station.
The electric power of photovoltaic plant redundancy can be passed through the shape of heat-storage medium thermal energy by the photovoltaic and photothermal hybrid power system of this example
Formula stores, and realizes that electric power adds to power grid, photo-thermal power station station-service electronic system, heat-storage medium electricity by autonomous control subsystem
The automatic switchover of thermal sub-system, and it is equipped with heat-storage medium auxiliary fuel heating subsystem, and then guarantee that photovoltaic, photo-thermal power station are defeated
Electric power out can satisfy network load fluctuation, provide stable and lasting power supply.
Above-described embodiment is the preferable embodiment of the utility model, but the embodiments of the present invention is not by above-mentioned
The limitation of embodiment, it is made under other any spiritual essence and principles without departing from the utility model to change, modify, replacing
In generation, simplifies combination, should be equivalent substitute mode, is included within the protection scope of the utility model.
Claims (8)
1. a kind of photovoltaic and photothermal hybrid power system, it is characterised in that including photovoltaic plant (2), the photo-thermal containing heat accumulation subsystem
Power station (1), heat-storage medium electric heating subsystem (15), heat-storage medium auxiliary fuel heating subsystem (16) and automatic control subsystem
System；
The electric power that the photovoltaic plant (2) generates passes through autonomous control subsystem (3), realizes electric power to power grid (4), photo-thermal electricity
The automatic switchover for the station-service electronic system, heat-storage medium electric heating subsystem (15) of standing；
The photo-thermal power station (1) be include solar energy light gathering and heat collecting subsystem (11), heat accumulation subsystem, steam generation subsystem
(13) and turbine LP rotors (14)；Liquid water becomes water by the heating of high-temperature heat-storage medium in steam generation subsystem (13)
Steam, and then enter turbine LP rotors (14) and generate electric power, vapor becomes after turbine LP rotors (14) do work
Liquid water, and then complete thermodynamic cycle.
2. photovoltaic and photothermal hybrid power system according to claim 1, which is characterized in that the heat-storage medium electric heating
Subsystem (15) includes built-in wetting contact formula, it is external contactless and it is built-in it is external it is hybrid-type one of them；
The heat-storage medium heating subsystem of the built-in wetting contact formula includes inside and outside multilayer sleeve structure；
The external contactless heat-storage medium heating subsystem is located in the insulating layer of bypass heating tank (123), including electricity
Magnetic heating coil.
3. photovoltaic and photothermal hybrid power system according to claim 1, which is characterized in that auxiliary fuel system and electric heating
System passes through switch block respectively and the low-temperature storage tank of photo-thermal power station connects.
4. photovoltaic and photothermal hybrid power system according to claim 1, which is characterized in that the heat accumulation subsystem includes
Low-temperature storage tank (122), high temperature storage tank (121) and bypass heating tank (123), low-temperature storage tank (122) is middle to store 200-350 DEG C of heat accumulation
Medium, high temperature storage tank (121) is middle to store 350-650 DEG C of heat-storage medium, and bypass heating tank (123) can be by multiple small storage tank series connection groups
At.
5. photovoltaic and photothermal hybrid power system according to claim 1, which is characterized in that the heat-storage medium is nitric acid
One of salt, concrete and/or heat chemistry medium or a variety of mixtures.
6. photovoltaic and photothermal hybrid power system according to claim 1, which is characterized in that the photo-thermal power station station service
Subsystem power source includes photovoltaic plant, photo-thermal power station, power grid.
7. photovoltaic and photothermal hybrid power system according to claim 1, which is characterized in that the heat-storage medium electric heating
Subsystem power source includes photovoltaic plant, power grid.
8. photovoltaic and photothermal hybrid power system according to claim 1, which is characterized in that the heat-storage medium assists combustion
The fuel source for expecting heating subsystem includes natural gas, diesel oil.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201920021476.1U CN209558703U (en) | 2019-01-07 | 2019-01-07 | A kind of photovoltaic and photothermal hybrid power system |
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| CN201920021476.1U CN209558703U (en) | 2019-01-07 | 2019-01-07 | A kind of photovoltaic and photothermal hybrid power system |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111396977A (en) * | 2020-03-27 | 2020-07-10 | 南京理工大学 | Station radiation heating system and control method thereof |
| CN112217232A (en) * | 2020-09-29 | 2021-01-12 | 浙江中光新能源科技有限公司 | Photovoltaic and photo-thermal coupling power generation system and power generation control method |
| CN113266953A (en) * | 2021-05-26 | 2021-08-17 | 国网河北省电力有限公司电力科学研究院 | Photovoltaic and photo-thermal power generation system |
| CN113783504A (en) * | 2021-07-26 | 2021-12-10 | 天津科技大学 | Photovoltaic photo-thermal system and control method thereof |
| CN113865118A (en) * | 2021-09-15 | 2021-12-31 | 吉林省电力科学研究院有限公司 | Light energy access coal-fired unit and light-coal energy complementary load adjusting method |
-
2019
- 2019-01-07 CN CN201920021476.1U patent/CN209558703U/en active Active
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111396977A (en) * | 2020-03-27 | 2020-07-10 | 南京理工大学 | Station radiation heating system and control method thereof |
| CN112217232A (en) * | 2020-09-29 | 2021-01-12 | 浙江中光新能源科技有限公司 | Photovoltaic and photo-thermal coupling power generation system and power generation control method |
| CN112217232B (en) * | 2020-09-29 | 2022-07-15 | 浙江中光新能源科技有限公司 | Photovoltaic and photo-thermal coupling power generation system and power generation control method |
| CN113266953A (en) * | 2021-05-26 | 2021-08-17 | 国网河北省电力有限公司电力科学研究院 | Photovoltaic and photo-thermal power generation system |
| CN113783504A (en) * | 2021-07-26 | 2021-12-10 | 天津科技大学 | Photovoltaic photo-thermal system and control method thereof |
| CN113865118A (en) * | 2021-09-15 | 2021-12-31 | 吉林省电力科学研究院有限公司 | Light energy access coal-fired unit and light-coal energy complementary load adjusting method |
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