CN102655331A - Surface solar energy and hydropower combined power generation method - Google Patents
Surface solar energy and hydropower combined power generation method Download PDFInfo
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- CN102655331A CN102655331A CN2012101160812A CN201210116081A CN102655331A CN 102655331 A CN102655331 A CN 102655331A CN 2012101160812 A CN2012101160812 A CN 2012101160812A CN 201210116081 A CN201210116081 A CN 201210116081A CN 102655331 A CN102655331 A CN 102655331A
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Abstract
The invention provides a surface solar energy and hydropower combined power generation method, belonging to the field of power system application. The invention in particular provides a solar energy and hydropower combined power generation method. The method is characterized by utilizing a reservoir of a hydropower station to arrange a surface solar energy power generation device, converting the direct current sent by the solar energy power generation device into the sine wave alternating current with the same frequency and phase as a power grid with an inverter, merging the sine wave alternating current into an outlet bus of a combined power generation device after the sine wave alternating current is boosted by a booster transformer of the solar energy power generation device, adopting a centralized control room to control a water-turbine generator set to ensure the solar energy power generation device and the water-turbine generator set to generate power in a combined manner and then transmitting the power to a substation of the power grid via a main transformer. The method is simple and practicable and is beneficial to better solving the problems that the solar energy power generation devices occupy large area of land and generate power intermittently and unstably and the hydropower generation devices can not generate power continuously and stably in the dry season.
Description
Technical field
The invention belongs to the electric power system application, specifically is the method for solar energy and waterpower cogeneration.
Background technology
Sustainable development is the key subjects of face of mankind in this century.Solar energy is huge, and sunshine earth was enough to satisfy the energy demand in 1 year of the whole mankind in 40 minutes, and inexhaustible, nexhaustible, clean environment firendly are not limited by the region.
At present fully pay attention to tapping a new source of energy and the reasonable utilization of the existing energy in countries in the world, greatly develops the generation of electricity by new energy industry, to alleviate fossil energy generating high pollution, highly energy-consuming problem.Solar energy solar photoelectric or photo-thermal conversion TRT are developed greatly, and various generation of electricity by new energy forms receive extensive concern.
Device of solar generating need take huge land area, and under the very rare situation of cultivated land resource, the area almost can not Large scale construction except that the desert.
Existing device of solar generating illumination energy density is little, generating efficiency and season, reaches and rain or shine waits meteorological condition closely related round the clock, and photoelectricity, photo-thermal conversion efficiency are not high; There is the photovoltaic generation instability of exerting oneself; Can not be continuously in the defective of network operation, a year hours run is 1500～2500, because illumination intermittently changes and causes the probability of off-grid accident bigger; Influenced peak load regulation network, frequency modulation, large-scale application solar energy has become the technical bottleneck of power network safety operation.
Tracking generating sets such as thermoelectricity, water power, nuclear power, combustion gas have powerful self-regulation ability in the electrical network tradition forms of electricity generation; Can receive the intermittently energy such as part solar energy, wind energy; But what comprise household solar energy, wind energy is incorporated into the power networks intermittently that the energy generator group can not surpass 20% of electrical network total installation of generating capacity, otherwise is prone to network system collapse accident.Large-scale application solar energy, wind energy have become the technical bottleneck of power network safety operation.See accompanying drawing 1 conventional power generation systems sketch map.
Build the hydroelectric station and will flood a large amount of soils, and the almost not utilization of the huge reservoir area in back is built up in the hydroelectric station at present, the utilance of land resource is very low.
Hydroelectric station year operation 2500～6000 hours receives seasonal effect, and dry season can not continuous and stable electric generation, influences peak load regulation network, frequency modulation and safe operation.
The correlation technique retrieval situation of Chinese patent document has been compared following difference with a kind of water surface solar energy of the present invention waterpower cogeneration method.
1, " a kind of solar enegy water-pumping accumulation and power generation combined system " invention (application number 02134734.4); The technical scheme of this invention is to be that heat energy is produced steam through conversion of solar energy; Use the pumped storage of steam driven suction pump again; By the unified generating of water wheels unit, this technology is through solar energy, and------steam---suction pump---water wheels unit multiple conversions energy form, energy loss is bigger for heat energy according to the electrical network demand.
2, " omnirange high-efficiency concentration solar hydroelectric integration TRT " utility model (application number 200820185104.4) is a kind of omnirange concentrating solar power generation system, comprises concentrator, solar power generation unit, heat exchanger.Solar power generation unit comprises some series-connected cell sheets and the parallel network reverse power supply that is installed on the same heat exchanger; The dc high-voltage output end of some battery sheet series connection formation links to each other with the parallel network reverse power input, forms an integrally-built solar power generation unit of independence; The top of some series-connected cell sheets is provided with the concentrator of being made up of spherical hollow space lens and optically focused funnel; With omnidirectional solar light focusing on some series connected battery sheets; Heat exchanger is installed on the water tank internal upper part, and the hot water circuit of heat exchanger exchange is utilized again, and this technology fails to make full use of huge reservoir area; The unresolved photovoltaic generation of this technology instability of exerting oneself, can not be continuously at the technical barrier of network operation.
3, " corrugated tile concentration solar hydroelectric integration building block " invention (application number 201010125392.6) is a kind of corrugated tile concentration solar hydroelectric integration building block; Some series-connected cell sheets are installed on the heat exchanger, form the solar power generation unit of absolute construction, the dc high-voltage output end that some solar power generation unit series connection form links to each other with the parallel network reverse power input; The independently integrally-built solar power generation grid-connecting of formation system; Through the corrugated tile concentrating component sunray is focused on some the series connected battery sheets, save the sun light tracking device, reduce the solar battery sheet consumption; Supporting use cooling system; Hot water circuit is utilized, and with building realization combining solar water and generating integrated, this technology is the combination of solar water heater and parallel network power generation; The unresolved photovoltaic generation instability of exerting oneself, can not be continuously at the technical barrier of network operation.
4, " a kind of small hydropower station TRT that utilizes wind energy and solar energy composite generating " utility model (application number 200920101784.1) is made up of rod-free cylinder, pressurized canister, appendix, windbag, windbag support, one-way ventilating film, Non-return air valve, solar water heater boiler, the fluid box that is prone to vaporization, piston, air inlet, exhaust outlet, unidirectional valve, inlet, leakage fluid dram, liquid back pipe, air pressure valve, gas storage (liquid) jar, gas motor, generator; Utilize water ability, solar energy to become heat energy to promote rod-free cylinder and windbag generation compressed air and water with wind energy transformation; Produce high pressure through pressurized canister; Drive generator for electricity generation through air motor; This technology is through cylinder, and------------gas storage (liquid) jar---gas motor---generator multiple conversions energy form, energy loss is bigger for fluid box for solar water heater for pressurized canister.
5, " a kind of solar hydroelectric cogeneration facility " utility model (application number: 201120171058.4) comprises solar power system and seawater desalination system; Solar power system comprises: the disc type solar energy condenser system focuses on sunlight on its absorber absorber absorbed radiation and Heating Cyclic fluid; The low parameter turbo generator set, generating under the circulating fluid after the heating drives; Double-deck initiatively disc type solar energy sea water desalination apparatus, its lower floor introduces the seawater heating of exhaust steam in steam turbine to the upper strata; Circulating pump is pumped into absorber with the low-temp low-pressure circulating fluid after the heat exchange; Seawater desalination system comprises: seawater supply-water pump, screen pack are arranged at seawater supply-water pump inlet, and sea water pump is delivered to the upper strata of double-deck active disc type solar energy sea water desalinating unit, generate electricity simultaneously and carry out desalinization.This technology is through disc type solar energy condenser system-absorber-Heating Cyclic fluid-low parameter turbo generator set multiple conversions energy form; Compare with a kind of water surface solar energy of the present invention waterpower cogeneration method; The difficult problem of the intermittent unstable generating of still unresolved device of solar generating, and energy loss is bigger.
Summary of the invention
Deficiency to prior art; The purpose of this invention is to provide a kind of water surface solar energy waterpower cogeneration method, it can solve preferably device of solar generating take huge land area and hydroelectric installation dry season can not continuous and stable electric generation, the problem of the intermittent unstable generating of device of solar generating.
Realize that the technical scheme that the object of the invention adopted is: utilize Hydropower Plant Reservoir that water surface device of solar generating is set; The direct current that device of solar generating sends is converted into and electrical network same frequency, synchronous sine wave alternating current through inverter;, incorporates by the step-up transformer of device of solar generating cogeneration TRT outlet bus after boosting into; Through centralized control room control hydraulic generator unit; Make device of solar generating and hydraulic generator unit cogeneration, again through main transformer pushing electric network transformer station.
Device of solar generating and hydraulic generator group are provided with the critical point voltameter respectively and measure respectively; Control the hydraulic generator unit through centralized control room AGC (automatic generating plant); In the water yield and when sunny; Device of solar generating and hydraulic generator unit generate electricity simultaneously, at this moment through the operation of centralized control room control hydraulic generator unit, satisfy the requirement of peak load regulation network frequency modulation; Dry season, device of solar generating preferentially generated electricity when sunny, and the hydraulic generator unit is shut down retaining, hydraulic generator unit generating during the sunlight disappearance, the solar energy electric weight of loss of balance; Device of solar generating supplied electricity generation system station service stand-by power supply when the hydraulic generator unit was stopped transport.
Device of solar generating and hydraulic generator group are provided with the critical point voltameter respectively and measure respectively; Control the hydraulic generator unit through centralized control room AGC (automatic generating plant); In the water yield and when sunny; Device of solar generating and hydraulic generator unit generate electricity simultaneously, at this moment through the operation of centralized control room control hydraulic generator unit, satisfy the requirement of peak load regulation network frequency modulation; Dry season, device of solar generating preferentially generated electricity when sunny, and the hydraulic generator unit is shut down retaining, and hydraulic generator unit generating during the sunlight disappearance is with the solar energy electric weight of loss of balance; Device of solar generating supplied electricity generation system station service stand-by power supply when the hydraulic generator unit was stopped transport.
Beneficial effect of the present invention is following.
1. the reservoir water surface that area is huge has obtained utilization after the hydroelectric station is built up; Solar energy and hydroelectric installation cogeneration have solved the outlet of two kinds of TRT soil problems; If build 3,000 ten thousand kilowatts of solar energy and water power cogeneration station; Can save cultivated land occupancy and take 36,000,000,000 yuan (30,000 yuan/mu, 10,000 kilowatts of device of solar generating cover 400 mu of water surface areas).
2. through centralized control room AGC (automatic power-generating controller for use) control hydraulic generator unit and the generating of device of solar generating combined dispatching; Utilize the same circuit of seeing off to mains supply; The generating characteristics of solar energy, water power are not fully exerted, and can realize seeing off the balance and stability of electric weight, make the cogeneration station can safe operation; Satisfy peak load regulation network, frequency modulation generating requirement, make large-scale application solar energy become possibility.
3. solar hydroelectric combined dispatching, with the same generation technology of seeing circuit to mains supply off, each project can be practiced thrift and seen the circuit overlapping investment off more than 5,000 ten thousand yuan; Solar energy waterpower cogeneration light water is complementary, the dry season during solar power generation hydraulic generator can shut down the retaining energy storage, rainy season, daytime, solar energy was sent out less, water can be multiple, more each hydropower station can increase and utilize hour more than 1000 in this way.
4. the solar hydroelectric cogeneration technology centering state carbon dioxide discharge-reduction of the present invention's proposition is significant; Electric power 70%-80% is fuel with the coal in China's high-carbon energy resource structure; Per 1 kilowatt hour electric weight produces carbon dioxide 860 grams, and whole nation discharging carbon dioxide was 28.62 hundred million tons in 2010, if build 3,000 ten thousand kilowatts of solar energy waterpower combined generating systems; Device of solar generating 2000 utilizes 60,000,000,000 kilowatt hours of hour can generating electricity, 0.516 hundred million ton of reducing emission of carbon dioxide; 3,000,000,000,000 kilowatts of hydroelectric installations increase by 1000 and utilize 3,000 hundred million kilowatt hours of hour can generating electricity, 2.58 hundred million tons of reducing emission of carbon dioxide.
5. 10,000 kilowatts of device of solar generating cover water surface area 0.2664km
2(400 mu); The solar hydroelectric cogeneration technology that the present invention proposes has reduced the reservoir evaporation from water surface, has improved water utilization rate, if build 3,000 ten thousand kilowatts of solar energy waterpower combined generating systems; Calculate by Yunnan annual evaporation capacity 1000mm; Can reduce by 800,000,000 tons of evaporations of water every year, calculate, can increase hydroelectric power generation 1.65 hundred million degree by 5 cubes/1 kilowatt hour water consumption.
Description of drawings
Fig. 1 is the principle schematic of conventional power generation systems.
Fig. 2 is an electricity generation system schematic flow sheet of the present invention.
Concrete implementation
Referring to Fig. 2; Utilize the Hydropower Plant Reservoir water surface that big capacity device of solar generating is set; Importing inverter in the direct current set of packets that a plurality of device of solar generating are sent changes into and electrical network same frequency, synchronous sine wave alternating current; Through the solar energy step-up transformer through the critical point voltameter incorporate TRT outlet bus into, hydraulic generator unit and device of solar generating are provided with the critical point voltameter and measure electric weight respectively, boost through main transformer and send into electrical network.Implement device of solar generating and hydraulic generator cogeneration through hydraulic generator unit AGC (automatic generation control) device.This generation mode has improved the generating capacity of combined plant, can not increase the capacity of short circuit of electrical network, can avoid inversion side network failure surge generator, satisfies electric power system tide distribution, relaying protection and idle control requirement.
Through centralized control room control device of solar generating and the generating of hydraulic generator unit; In the water yield and when sunny; Device of solar generating and hydraulic generator unit generate electricity simultaneously, and at this moment the hydraulic generator unit can drop into AGC (automatic generation control) device, satisfies the requirement of peak load regulation network frequency modulation; Device of solar generating preferentially generated electricity when the dry season was sunny, and the hydraulic generator unit is shut down retaining, hydraulic generator unit generating during the sunlight disappearance, the solar energy electric weight of loss of balance.Device of solar generating supplied electricity generation system station service stand-by power supply when the hydraulic generator unit was stopped transport.This method is with device of solar generating and hydraulic generator combined dispatching; With photovoltaic, photo-thermal power generation intermittent power generation; Dry season hydroelectric power generation unit can not be continuously be equilibrated at metastable state in the defective of network operation, realizes that in combined generating system the balance and stability of electric weight is seen off, satisfies the requirement of peak load regulation network frequency modulation; When increasing dry season hydroelectric power generation ability, create conditions for utilizing solar energy on a large scale.
Above-mentioned flow chart only is to be the implementation done of explanation clearly, and is not the qualification to implementation.For the those of ordinary skill in affiliated field, on the basis of above-mentioned explanation, can also make other multi-form variation or change, no longer give exhaustive here to all execution modes.And conspicuous variation of being extended out thus or change still are among protection scope of the present invention.
Claims (2)
1. water surface solar energy waterpower cogeneration method; It is characterized in that: utilize Hydropower Plant Reservoir that water surface device of solar generating is set; The direct current that device of solar generating sends is converted into and electrical network same frequency, synchronous sine wave alternating current through inverter;, incorporates by the step-up transformer of device of solar generating cogeneration TRT outlet bus after boosting into; Through centralized control room control hydraulic generator unit, make device of solar generating and hydraulic generator unit cogeneration, again through main transformer pushing electric network transformer station.
2. by the described water surface solar energy of claim 1 waterpower cogeneration method; It is characterized in that: device of solar generating and hydraulic generator group are provided with the critical point voltameter respectively and measure respectively; Control the hydraulic generator unit through centralized control room, in the water yield and when sunny, device of solar generating and hydraulic generator unit generate electricity simultaneously; At this moment through the operation of centralized control room control hydraulic generator unit, satisfy the requirement of peak load regulation network frequency modulation; Dry season, device of solar generating preferentially generated electricity when sunny, and the hydraulic generator unit is shut down retaining, hydraulic generator unit generating during the sunlight disappearance, the solar energy electric weight of loss of balance; Device of solar generating supplied electricity generation system station service stand-by power supply when the hydraulic generator unit was stopped transport.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103117555A (en) * | 2013-02-01 | 2013-05-22 | 东南大学 | Novel integrated device of solar energy assisted thermal power station |
| CN103956962A (en) * | 2014-05-15 | 2014-07-30 | 无锡同春新能源科技有限公司 | Power supply device for establishing solar photovoltaic power station and hydroelectric power station integrally in reservoir |
| CN106300437A (en) * | 2015-05-13 | 2017-01-04 | 云南大唐国际那兰水电开发有限公司 | Hydraulic photovoltaic cogeneration method |
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| CN201844350U (en) * | 2010-10-15 | 2011-05-25 | 江西开昂新能源科技有限公司 | Street lamp system adopting solar and wind power grid integration centralized power supply |
| CN201865851U (en) * | 2010-11-29 | 2011-06-15 | 山东省电力学校 | Power generation system with a plurality of energy resources |
| CN202168008U (en) * | 2011-07-26 | 2012-03-14 | 杜荣熠 | Modular solar photovoltaic power generation device floating on water surface |
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2012
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20110023296A (en) * | 2009-08-31 | 2011-03-08 | 하태안 | Learning material of electric power plant having electric home appliances |
| CN201844350U (en) * | 2010-10-15 | 2011-05-25 | 江西开昂新能源科技有限公司 | Street lamp system adopting solar and wind power grid integration centralized power supply |
| CN201865851U (en) * | 2010-11-29 | 2011-06-15 | 山东省电力学校 | Power generation system with a plurality of energy resources |
| CN202168008U (en) * | 2011-07-26 | 2012-03-14 | 杜荣熠 | Modular solar photovoltaic power generation device floating on water surface |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103117555A (en) * | 2013-02-01 | 2013-05-22 | 东南大学 | Novel integrated device of solar energy assisted thermal power station |
| CN103956962A (en) * | 2014-05-15 | 2014-07-30 | 无锡同春新能源科技有限公司 | Power supply device for establishing solar photovoltaic power station and hydroelectric power station integrally in reservoir |
| CN106300437A (en) * | 2015-05-13 | 2017-01-04 | 云南大唐国际那兰水电开发有限公司 | Hydraulic photovoltaic cogeneration method |
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Application publication date: 20120905 |