CN103375368A - Solar power system and control method thereof - Google Patents
Solar power system and control method thereof Download PDFInfo
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- CN103375368A CN103375368A CN2012101060354A CN201210106035A CN103375368A CN 103375368 A CN103375368 A CN 103375368A CN 2012101060354 A CN2012101060354 A CN 2012101060354A CN 201210106035 A CN201210106035 A CN 201210106035A CN 103375368 A CN103375368 A CN 103375368A
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- gas
- heat
- turbine
- power take
- temperature
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03G—SPRING, WEIGHT, INERTIA OR LIKE MOTORS; MECHANICAL-POWER PRODUCING DEVICES OR MECHANISMS, NOT OTHERWISE PROVIDED FOR OR USING ENERGY SOURCES NOT OTHERWISE PROVIDED FOR
- F03G6/00—Devices for producing mechanical power from solar energy
- F03G6/06—Devices for producing mechanical power from solar energy with solar energy concentrating means
- F03G6/068—Devices for producing mechanical power from solar energy with solar energy concentrating means having other power cycles, e.g. Stirling or transcritical, supercritical cycles; combined with other power sources, e.g. wind, gas or nuclear
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03G—SPRING, WEIGHT, INERTIA OR LIKE MOTORS; MECHANICAL-POWER PRODUCING DEVICES OR MECHANISMS, NOT OTHERWISE PROVIDED FOR OR USING ENERGY SOURCES NOT OTHERWISE PROVIDED FOR
- F03G6/00—Devices for producing mechanical power from solar energy
- F03G6/06—Devices for producing mechanical power from solar energy with solar energy concentrating means
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24S—SOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
- F24S50/00—Arrangements for controlling solar heat collectors
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24S—SOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
- F24S50/00—Arrangements for controlling solar heat collectors
- F24S50/40—Arrangements for controlling solar heat collectors responsive to temperature
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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
Abstract
The invention discloses a solar power system and a control method thereof. In the solar power system, a temperature sensor and/or a pressure transducer is arranged on a position of the air outlet of a heat-collecting device, and a first controllable valve and a second controllable valve are controlled according to air temperature and /or air pressure detected in the air outlet of the heat-collecting device. The control method includes that a power generation system can be quickly adjusted according to sunlight intensity, and can work stably when sunlight becomes intense or weak suddenly. A power output turbine and a pneumatic drive turbine can be mounted in an 'uncoaxial' mode, so that the layout of an engine is more flexible; preferably, multi-group and multi-stage power output turbines are assembled in parallel or in series, or provided with independent adjustable load, turbine speed can be adjusted in real time according to engine operating conditions, and the greatest thermal power conversion efficiency of each turbine can be fully exerted.
Description
Technical field
The present invention relates to application of solar, is specifically related to a kind of solar power system and controlling method thereof.
Background technique
Along with the quickening of economic globalization process, energy supply internationalization institute coming crisis in Western sociology is also more and more obvious, and China is in the course of industrialization, and socio-economic development is more much bigger than developed country to the dependence of the energy.Solar energy is as clean energy resource, and is inexhaustible, become one of main energy sources.Because solar energy can be converted to multiple other form energy, so application area is also very extensive.Through exploitation for many years, solar electrical energy generation has also obtained significant progress.
In the prior art, utilize solar energy heating heat absorption working medium to obtain high temperature and high pressure gas, utilize high temperature and high pressure gas to drive motive power outputting apparatus and produce mechanical energy and further mechanical energy is converted into electric energy.Utilize the system of solar electrical energy generation to generally comprise following structure:
The multiple system that utilizes solar electrical energy generation is arranged in the prior art, a kind of system for solar electrical energy generation is disclosed such as patent documentation CN102182652A, in this system, comprise the solar energy preheater, be used for to use the deaeration of the pre-hot compression of first portion of solar energy fluid of heating to produce the pressurized air of heating; Burner, it is operably connected on the described solar energy preheater, in order to receive the pressurized air of described heating from described solar energy preheater, uses the pressurized air burning fuel of described heating to produce thermal incineration gas; The first turbine, it is operably connected on the described burner, in order to receive described thermal incineration gas from described burner, makes described thermal incineration gas expansion to produce Exhaust Gas; Heat recovery steam generator, it is operably connected on the first turbine, in order to receive described Exhaust Gas from described the first turbine; Use the fluid of described Exhaust Gas heating-condensing to produce steam; Solar still/superheater, it is operably connected on the described heat recovery steam generator, in order to receiving the working fluid of heating from described recovery evaporator generator, the working fluid that the second portion of the solar energy fluid by using described heating heats described heating produces solar steam; And second turbine, it is configured to drive the second generator in order to the solar steam that uses the steam that receives from described heat recovery steam generator and receive from described solar still/superheater.
In the said system, the first turbine need to receive the thermal incineration gas from burner, makes described thermal incineration gas expansion produce Exhaust Gas and drives the generating of the first generator, and this process still is to rely on the burning of fuel to produce thermal incineration gas; The second turbine receives the steam of described heat recovery steam generator and the solar steam of described solar still/superheater discharge drives the generating of the second generator.Wherein, described recovery evaporator need to receive the gas of discharging from the first turbine, and receives the gas from the burner thermal incineration during the first turbine, therefore still needs the burning of fuel that heat is provided.
Said system, the second portion of the solar energy fluid of the heating that solar still/superheater receives, it is by assembling solar beam heating solar fluid, yet producing heat with burning fuel compares, the heat of assembling the solar beam generation can be different owing to season, every day is constantly different, weather is rain or shine staggered etc., very large Strength Changes may occur at short notice, so the heat energy that the second portion of the solar energy fluid of described heating carries can be along with season, time, the difference of the situations such as weather and having greatly changed, temperature and the pressure of the solar steam that described recovery evaporator is discharged are just unstable, namely temperature and the pressure of the solar steam that receives of the second turbine are exactly unsettled, this will cause the unstable of generated output, can not farthest utilize the heat of solar energy, causes the waste of the energy.Even said system can realize using separately solar energy to generate electricity, but still exist generated output unstable, the technical problem that the utilization ratio of solar energy is not high.
Summary of the invention
Technical problem to be solved by this invention is to utilize in the prior art in the system of solar electrical energy generation because the inhomogeneous quantity of heat given up that causes of solar energy is inhomogeneous, causes accomplishing that the utilization ratio to solar energy reaches the highest technical problem.
For solving the problems of the technologies described above, the invention provides a kind of solar power system, comprising:
Gas compressor, compression enters the air of system, and the pressurized gas of formation are discharged from relief opening;
The driving turbine of calming the anger is connected with the impeller of described gas compressor is coaxial through transmission shaft, and described calming the anger drives turbine and rotate synchronously with described gas compressor, and described relief opening of calming the anger the driving turbine links to each other by the suction port of gas channel with first group of power take-off;
Heat-collecting devcie absorbs the heat of solar energy, and its suction port receives described pressurized gas by gas channel from the relief opening of described gas compressor, and described pressurized gas form high temperature and high pressure gas in described heat-collecting devcie inside after solar energy heating; Described heat-collecting devcie exhaust ports is provided with temperature transducer and/or pressure transducer, is used for measuring temperature and/or the pressure of described heat-collecting devcie exhaust ports gas;
Described heat-collecting devcie relief opening is exported high temperature and high pressure gas by at least two gas channels:
Article one, the high temperature and high pressure gas of the first output port of gas channel discharge enters described calming the anger by gas channel and drives the suction port of turbine;
The second output port of at least one gas channel links to each other by the suction port of gas channel with second group of power take-off, the high temperature and high pressure gas of described the second output port output enters the suction port of second group of described power take-off, drive second group of described power take-off generating, described the second output port place is provided with the first controllable valve;
Controller is realized the data communication transmission with described temperature transducer and/or pressure transducer, and temperature and/or the pressure of the high temperature and high pressure gas that measures according to described temperature transducer and/or pressure transducer control described the first controllable valve.
Be provided with the second controllable valve on the gas channel between the suction port of described the calm the anger relief opening that drives turbine and first group of described power take-off, described controller is controlled described the second controllable valve according to temperature and/or the pressure of the gas that described temperature transducer and/or pressure transducer measure.
Each described power take-off comprises power output turbine and the generator of coaxial connection, and the high temperature and high pressure gas that enters described power take-off drives described power output turbine rotation and then drives described generator generating.
Every group of power take-off comprises at least described power take-off of two-stage, and the gas that the output of power described in the described power take-off of previous stage turbine exhaust mouth is discharged enters the suction port of the described power output turbine in the described power take-off of rear one-level.
Described power output turbine specification in each described power take-off is identical.
Connect on the gas channel of the described power take-off of adjacent two-stage and be provided with controlled two-way valve, each described Twoway valves door is by its first port UNICOM gas channel.
Exhaust ports at each described power output turbine is provided with temperature measuring equipment, and described temperature measuring equipment is measured the temperature of corresponding described power output turbine exhaust mouth place gas;
Described controller and described temperature measuring equipment are realized the data communication transmission, receive the measured value of described temperature measuring equipment, control the state of corresponding described two-way valve according to the measured value of described temperature measuring equipment.
System also comprises:
Regenerator, its suction port is by the relief opening UNICOM of the second port and the described power output turbine of each described two-way valve; Its air outlet is by the suction port UNICOM of gas channel and described heat-collecting devcie, and the heat energy that displaces through described regenerator enters described heat-collecting devcie.
Described heat-collecting devcie surface is provided with light intensity sensor, is used for measuring in real time the illumination intensity on described heat-collecting devcie surface;
Described controller and described light intensity sensor are realized the data communication transmission, receive the measured value of described light intensity sensor; Described controller is built-in with the analytic operation unit, according to the measured value of described light intensity sensor and described temperature transducer and/or pressure transducer, controls described the second controllable valve and described the first controllable valve.
The present invention also discloses a kind of controlling method of solar power system, adopts above-mentioned solar power system, comprises the steps:
I. the temperature transducer of heat-collecting devcie exhaust ports setting and/or pressure transducer are measured temperature T and/or the pressure P of described heat-collecting devcie exhaust ports gas in real time;
II. controller transmits the measured value that obtains described temperature transducer and/or pressure transducer, the first threshold T built-in with it by data communication
1And/or P
1Compare:
If T＜T
1And/or P＜P
1, control the first controllable valve and disconnect, the heat-driven that described heat-collecting devcie the produces driving turbine rotation of calming the anger, the heat circulation in the keeping system;
If T＞T
1And/or P＞P
1, control described the first controllable valve UNICOM;
The gas that described heat-collecting devcie is discharged drives first group of power take-off generating of turbine rear driving through described calming the anger;
The gas that described heat-collecting devcie is discharged is through second group of power take-off generating of the second output port rear driving.
Described controller is built-in with Second Threshold T
2And/or P
2, T wherein
1＞T
2, P
1＞P
2:
In the described Step II:
If T＜T
2And/or P＜P
2, controlling described the first controllable valve and the second controllable valve and disconnect, system is in not generating state, the heat circulation in the described driving turbine rotation of calming the anger of heat-driven that described heat-collecting devcie produces, keeping system;
If T
2＜T＜T
1And/or P
2＜P＜P
1, to control described the second controllable valve UNICOM and described the first controllable valve and disconnect, the gas that described heat-collecting devcie is discharged drives first group of described power take-off generating of turbine rear driving through described calming the anger;
If T＞T
1And/or P＞P
1, control described the second controllable valve and described the first controllable valve UNICOM,
The gas that described heat-collecting devcie is discharged drives first group of described power take-off generating of turbine rear driving through described calming the anger;
The gas that described heat-collecting devcie is discharged is through second group of described power take-off generating of the second output port rear driving.
In the described Step II, described controller is built-in with the threshold value T of the described power take-off generating of the every one-level of control
NAnd/or P
N(N=3,4,5 ...):
If T
N-1＜T＜T
NAnd/or P
N-1＜P＜P
NThe time, the two-way valve that control is corresponding and the first port disconnect;
If T＞T
NAnd/or P＞P
NThe time, described two-way valve corresponding to control is communicated with described the first port, described Twoway valves in front of the door the described Twoway valves of gas-powered of discharging of the power output turbine in the described power take-off of one-level behind the door the power output turbine drive generator in the described power take-off of one-level generate electricity.
The exhaust ports of each described power output turbine is provided with temperature measuring equipment, and described temperature measuring equipment is measured the temperature τ of corresponding described power output turbine exhaust mouth place gas;
Described controller transmits the measured value that obtains described temperature measuring equipment by data communication, with its built-in corresponding described power output Turbine Outlet Temperature threshold tau
ThCompare:
If τ＜τ
Th, control described two-way valve and described the first port thereafter disconnects;
If τ＞τ
Th, control described two-way valve and described the first port UNICOM thereafter.
System also comprises regenerator, and its suction port is by the relief opening UNICOM of the second port and the described power output turbine of described two-way valve;
When described two-way valve and described the first port disconnect and described the second port UNICOM.
Among the described step I, described heat-collecting devcie surface also is provided with light intensity sensor, is used for measuring in real time the illumination intensity on described heat-collecting devcie surface;
In the described Step II, described controller obtains described light intensity sensor measured value by the data communication transmission, analytic operation unit by using feed-forward regulation algorithm calculates the temperature T of the heat absorption working medium of described heat-collecting devcie exhaust ports according to the light intensity sensor measured value ' and/or pressure P ', with T+T ' and/or the P+P ' foundation as control the first controllable valve and the second controllable valve.
Technique scheme of the present invention has following advantage:
1. the power generation system among the present invention, at heat-collecting devcie exhaust ports set temperature sensor and/or pressure transducer, temperature and/or the pressure of Real-time Measuring amount heat-collecting devcie exhaust ports gas, and adjust the state of the first controllable valve that arranges on the branch road of heat-collecting devcie output gas channel according to the temperature variation of gas, can realize thus rationally arranging according to the sunlight intensity difference UNICOM's state of the first controllable valve, when the sunlight light intensity is very large, drive after first group of power take-off generating, can also drive second group of power take-off generating, then control second group of power take-off generating of the first controllable valve back, so that the utilization ratio of solar energy is improved greatly.
2. the present invention is by first group of power take-off and calm the anger to drive between the turbine the second controllable valve is set, can further guarantee to improve the utilization ratio to solar energy, according to the temperature of heat-collecting devcie exhaust ports gas and/or the measured value of pressure, controlling respectively two controllable valves is to turn-off or UNICOM, do not generate electricity or control separately the generating of first group of power take-off or control simultaneously first group of power take-off and second group of power take-off generating with the realization system, guarantee farthest to utilize thus solar electrical energy generation.
3. the power generation system among the present invention so that power output turbine can disalignment be connected with the output turbine of calming the anger, has been simplified overall structure by the inner structure of rational design, has reduced cost of production and the maintenance cost of system; And, the power generation system among the present invention, all power output turbines all can adopt same size and size, have therefore significantly reduced the part kind, have reduced cost of production, are suitable for batch production.
4. the power generation system among the present invention, can temperature measuring equipment be set by the exhaust ports at each power output turbine, measure the temperature of each power output exhaust ports gas, determine whether next group power take-off generating of demand motive according to measured value, can further improve generated output thus.
5. the electricity-generating control method among the present invention according to different temperatures and the pressure of heat-collecting devcie outlet port high temperature and high pressure gas, is controlled respectively different power output turbine generation, even can be exported turbine by the more power of cascade, has greatly improved generating efficiency.
6. the electricity-generating control method among the present invention, the temperature that the temperature measuring equipment that can be combined in each power output turbine exhaust mouth place's setting according to temperature and/or the pressure of heat-collecting devcie exhaust ports gas measures, combine the control program of analyzing controlled each valve, so that the utilization of solar energy is obtained maximum efficient.
Description of drawings
Fig. 1 is an embodiment's of power generation system of the present invention structural representation;
Fig. 2 is an embodiment's of power generation system of the present invention structural representation;
Fig. 3 is an embodiment's of power generation system of the present invention structural representation;
Fig. 4 is an embodiment's of power generation system of the present invention structural representation;
Fig. 5 is an embodiment's of power generation system of the present invention structural representation;
Fig. 6 is the combination schematic representation of two groups of power take-off of power generation system of the present invention;
Fig. 7 is the combination schematic representation of two groups of group power take-off of power generation system of the present invention;
Fig. 8 is the combination schematic representation of one group of power take-off of power generation system of the present invention;
Fig. 9 is the combination schematic representation of two groups of power take-off of power generation system of the present invention;
Reference character is expressed as among the figure: 100-gas compressor, 101-transmission shaft, the 102-driving turbine of calming the anger, 2-heat-collecting devcie, the 201-temperature transducer, 202-pressure transducer, 203-light intensity sensor, the 3-power take-off, 301-power output turbine, 302-generator, the 31-temperature measuring equipment, 4-controller, 6-regenerator, 7-the second controllable valve, 8-the first controllable valve, the controlled two-way valve of 9-, 9a-the first port, 9b-the second port, 10-electric power outlet line., K1-the first output port, K2-the second output port.
Embodiment
For content of the present invention is more likely to be clearly understood, the below according to a particular embodiment of the invention and by reference to the accompanying drawings, the present invention is further detailed explanation.
Embodiment 1
Present embodiment provides a kind of solar power system, and as shown in Figure 1, it comprises: gas compressor 100, and compression enters the air of system, and the pressurized gas of formation are discharged from relief opening;
Calm the anger and drive turbine 102, be connected with the impeller of described gas compressor 100 is coaxial through transmission shaft 101, the described driving turbine 102 of calming the anger rotates synchronously with described gas compressor 100, and the described relief opening that drives turbine 102 of calming the anger links to each other by the suction port of gas channel with first group of power take-off 3;
As preferred embodiment, each described power take-off 3 comprises power output turbine 301 and the generator 302 of coaxial connection, and the high temperature and high pressure gas that enters described power take-off 3 drives described power output turbine 301 and rotates and then drive described generator 302 generatings.
Heat-collecting devcie 2 absorbs the heat of solar energy, and its suction port receives described pressurized gas by gas channel from the relief opening of described gas compressor 100, and described pressurized gas form high temperature and high pressure gas in described heat-collecting devcie 2 inside after solar energy heating; Described heat-collecting devcie 2 exhaust ports are provided with temperature transducer 201 and/or pressure transducer 202, are used for measuring temperature and/or the pressure of described heat-collecting devcie 2 exhaust ports gases;
Described heat-collecting devcie 2 relief openings are exported high temperature and high pressure gas by at least two gas channels:
Article one, the high temperature and high pressure gas of the first output port K1 of gas channel discharge enters described calming the anger by gas channel and drives the suction port of turbine 102;
The second output port K2 of at least one gas channel links to each other by the suction port of gas channel with second group of power take-off 3, the high temperature and high pressure gas of described the second output port K2 output enters the suction port of second group of described power take-off 3, drive second group of described power take-off 3 generating, described the second output port K2 place is provided with the first controllable valve 8;
Provide in the present embodiment be the relief opening of described heat-collecting devcie 2 by a gas channel the second output port K2 and the suction port UNICOM of second group of power take-off 3, as the mode that can implement, can also export high temperature and high pressure gas by the output port of more gas channels, and the output port of each gas channel all can connect one group of described power take-off 3.
" first group " that provides in the present embodiment be connected second group " just to drive the described power take-off 3 that turbine 102 relief openings connect in order will describedly calming the anger and to make a distinction with described the first controllable valve 8 latter linked described power take-off 3, and these two groups described power output turbines do not have dividing of sequencing and significance level.
And in the present embodiment, as shown in Figure 1, first group of described power take-off 3 only has a described power take-off, second group of described power take-off 3 has two described power take-off, and the suction port of two described power take-off all links to each other with the described relief opening that drives turbine 102 of calming the anger.Need to prove that each number of organizing described power take-off 3 is not to fix, the power that can generate electricity according to actual needs carries out choose reasonable and configuration.
Before system starts working, start described gas compressor 100, described gas compressor 100 will form pressurized gas after will entering the air compressing of system, then the startup source, outside of described gas compressor 100 can be turned off, after described pressurized gas after compression this moment are heated in described heat-collecting devcie 2 and form high temperature and high pressure gas, enter described calming the anger through the first output port K1 and gas channel and drive the suction port of turbine 102, drive described calming the anger and drive turbine 102 rotations, although and has turn-offed in the at this moment outside of described gas compressor 100 startup source, but described gas compressor 100 drives 102 coaxial linking to each other of turbine by described transmission shaft 101 with described calming the anger, and therefore described calming the anger drives the wheel rotation that just can drive described gas compressor 100 when turbine 102 rotates.
The controlling method of solar power system described in the present embodiment comprises the steps:
I. the temperature transducer 201 of heat-collecting devcie 2 exhaust ports setting and/or pressure transducer 202 are measured temperature T and/or the pressure P of described heat-collecting devcie 2 exhaust ports gases in real time;
II. controller 4 transmits the measured value that obtains described temperature transducer 201 and/or pressure transducer 202, the first threshold T built-in with it by data communication
1And/or P
1Compare:
If T＜T
1And/or P＜P
1, to control the first controllable valve 8 and disconnect, the heat-driven that described heat-collecting devcie 2 produces is calmed the anger and is driven turbine 102 rotations, the heat circulation in the keeping system;
If T＞T
1And/or P＞P
1, control described the first controllable valve 8 UNICOMs;
The gas that described heat-collecting devcie 2 is discharged drives 3 generatings of first group of power take-off of turbine 102 rear drivings through described calming the anger;
The gas that described heat-collecting devcie 2 is discharged is through 3 generatings of second group of power take-off of the second output port K2 rear driving.
For first threshold T in the present embodiment
1And/or P
1, by power and the efficient of described power take-off 3, and the number of described power take-off 3 is definite, as T＞T
1And/or P＞P
1The time, the energy that described heat-collecting devcie 2 exhaust ports high temperature and high pressure gas produce is enough to drive first group of described power take-off 3 and second group of described power take-off 3 generating, therefore with described the first controllable valve 8 UNICOMs.
Adopt solar power system and controlling method in the present embodiment, when sunlight light was weak, it (was T＜T that the air temperature in the described heat-collecting devcie 2 and pressure are not enough to drive first group of described power take-off 3
1And/or P＜P
1) and second group of described power take-off 3 generate electricity simultaneously, described the first controllable valve 8 is disconnected; When sunlight light was stronger, it (was T＞T that the temperature of the gas of described heat-collecting devcie 2 exhaust ports and pressure can drive that first group of power take-off 3 and second group of power take-off 3 all generate electricity
1And/or P＞P), can be with described the first controllable valve 8 UNICOMs;
Adopt the solar power system in the present embodiment, the state of controlling described the first controllable valve 8 according to temperature and/or the pressure values of described heat-collecting devcie 2 relief opening high temperature and high pressure gas fully, and then not on the same group described power take-off 3 generatings of number of control, therefore according to the difference of solar beam intensity, generated output is also adjusted to some extent, realizes the maximum value to the solar energy utilization ratio.
The solar power system that present embodiment provides, for can be when sunlight light be stronger generated output larger, as shown in Figure 2, on embodiment 1 basis, gas channel between the suction port of described the calm the anger relief opening that drives turbine 102 and first group of described power take-off 3 is provided with the second controllable valve 7, and described controller 4 is controlled described the second controllable valve 7 according to temperature and/or the pressure of the gas that described temperature transducer 201 and/or pressure transducer 202 measure; Described controller 4 is controlled described the second controllable valve 7 according to temperature and/or the pressure of the high temperature and high pressure gas that described temperature transducer 201 and/or pressure transducer 202 measure.
Described controller 4 is built-in with Second Threshold T
2And/or P
2, T wherein
1＞T
2, P
1＞P
2:
In the described Step II:
If T＜T
2And/or P＜P
2, controlling the first controllable valve 8 and 7 disconnections of the second controllable valve, system is in not generating state, and the heat-driven that described heat-collecting devcie 2 produces is calmed the anger and is driven turbine 102 rotations, and the heat in the keeping system circulates;
If T
2＜T＜T
1And/or P
2＜P＜P
1, control described the second controllable valve 7 UNICOMs and 8 disconnections of described the first controllable valve, the gas that described heat-collecting devcie 2 is discharged drives first group of described power take-off 3 generating of turbine 102 rear drivings through described calming the anger;
If T＞T
1And/or P＞P
1, control described the second controllable valve 7 and described the first controllable valve 8 UNICOMs,
The gas that described heat-collecting devcie 2 is discharged drives 3 generatings of first group of power take-off of turbine 102 rear drivings through described calming the anger;
The gas that described heat-collecting devcie 2 is discharged is through 3 generatings of second group of power take-off of the second output port K2 rear driving.
Adopt solar power system and controlling method in the present embodiment, when sunlight light was weak, it (was T＜T that the air temperature in the described heat-collecting devcie 2 and pressure are not enough to drive described power take-off generating
2And/or P＜P
2), described the first controllable valve 8 and described the second controllable valve 7 are all disconnected, system is in not generating state; When sunlight light was stronger, it (was T that the temperature of the air in the described heat-collecting devcie 2 and pressure can drive first group of described power take-off 3 generating
2＜T＜T
1And/or P
2＜P＜P
1), can with described the second controllable valve 7 UNICOMs, drive first group of described power take-off 3 generating; When sunlight light very strong, the temperature of described heat-collecting devcie 2 interior air and pressure drive described calming the anger and drive turbine 102, and then drive after at least one group of described power take-off 3 generatings, can also drive more described power take-off 3 generatings (is T＞T
1And/or P＞P
1), therefore control described the first controllable valve 8 UNICOMs, the high temperature and high pressure gas that described heat-collecting devcie 2 relief openings are discharged drives respectively first group of power take-off 3 and second group of power take-off 3 generating by two gas channels.
Embodiment 3
Following improvement is made on basis in embodiment 1 and embodiment 2 arbitrary embodiments, every group of power take-off comprises at least described power take-off 3 of two-stage, and the gas that the output of power described in the described power take-off 3 of previous stage turbine 301 relief openings are discharged enters the suction port of the described power output turbine 301 in the described power take-off 3 of rear one-level.
Specifically can be to only have first group of described power take-off 3 to comprise at least described power take-off 3 of two-stage, the gas that the output of power described in the described power take-off 3 of previous stage turbine 301 relief openings are discharged enters the suction port of the described power output turbine 301 in rear one group of described power take-off 3.
Also can make and only have second group of described power take-off 3 to comprise at least two-stage power take-off 3, the gas that the output of power described in the described power take-off 3 of previous stage turbine 301 relief openings are discharged enters the suction port of the described power output turbine 301 in the described power take-off 3 of rear one-level.
The suction port that the gas of discharging for the described power of the previous stage described in present embodiment output turbine 301 relief openings enters the described power output turbine 301 in the described power take-off 3 of rear one-level includes but not limited to following combining form:
As shown in Figure 6, the gas that each described power output turbine 301 is discharged in the previous stage can directly enter rear one-level the suction port of dynamic output turbine 301; As shown in Figure 7, each described power output turbine 301 of previous stage gas of discharging through one-level after entering behind the unified gas channel the suction port of dynamic output turbine 301;
In addition, in the described power take-off 3 of every one-level dynamic output turbine 301 can accept the gas that the described power take-off of previous stage 3 is discharged, situation as shown in Figure 6 and Figure 7; Perhaps the gas of described power take-off 3 discharges of previous stage enters the suction port of the power output turbine 301 in the described power take-off 3 of rear one-level successively, as shown in Figure 8.Combination that can certainly aforesaid way, as shown in Figure 9.
In the present embodiment, described power output turbine 301 specifications in each described power take-off 3 can be identical.The type of the component in the whole system is greatly reduced, the structure of having simplified whole system also so that the cost of whole system greatly reduce.
As the preferred implementation of present embodiment, as shown in Figure 9, connect on the gas channel of the described power take-off 3 of adjacent two-stage and be provided with controlled two-way valve 9, each described two-way valve 9 is by its first port 9a UNICOM gas channel.
Corresponding in the described Step II of the solar power system in the present embodiment, described controller 4 is built-in with the threshold value T of described power take-off 3 generatings of the every one-level of control
NAnd/or P
N(N=3,4,5 ...):
If T
N-1＜T＜T
NAnd/or P
N-1＜P＜P
NThe time, the two-way valve 9 that control is corresponding and the first port 9a disconnect;
If T＞T
NAnd/or P＞P
NThe time, described two-way valve 9 corresponding to control is communicated with described the first port 9a, and the power output turbine 301 in the described power take-off 3 of the described two-way valve 9 rear one-levels of gas-powered that the power output turbine 301 in the described power take-off 3 of described two-way valve 9 previous stage is discharged drives generator 302 generatings.
In the present embodiment for threshold value T
NAnd/or P
NSelection also be that quantity according to the described two-way valve 9 rear power take-off that connect 3 is relevant.So when controlling different described two-way valves 9, the threshold value T of institute's foundation
NAnd/or P
NNot identical.
As shown in Figure 4, on embodiment 3 basis, the exhaust ports of exporting turbine 301 at each described power is provided with temperature measuring equipment 31, and described temperature measuring equipment 31 is measured the temperature of corresponding described power output turbine 301 exhaust ports gases;
Described controller 4 is realized the data communication transmission with described temperature measuring equipment 31, receives the measured value of described temperature measuring equipment 31, controls the state of corresponding described two-way valve 9 according to the measured value of described temperature measuring equipment 31.
Described controller 4 transmits the measured value that obtains described temperature measuring equipment 31 by data communication, with its built-in corresponding described power output turbine 301 relief opening temperature threshold τ
ThCompare:
If τ＜τ
Th, control described two-way valve 9 thereafter disconnects with described the first port 9a;
If τ＞τ
Th, control described two-way valve 9 and described the first port 9a UNICOM thereafter.
For temperature threshold τ
ThSelection, also be relevant according to the quantity of the described two-way valve 9 rear power take-off that connect 3 of described foundation.So when controlling different described two-way valves 9, the temperature threshold τ of institute's foundation
ThNot identical.
Embodiment 5
The solar power system that present embodiment provides, to embodiment 4 arbitrary embodiments' basis, can do following improvement in embodiment 1:
System also comprises:
Regenerator 6, its suction port is by the relief opening UNICOM of the second port 9b and the described power output turbine 301 of each described two-way valve 9; Its air outlet is by the suction port UNICOM of gas channel and described heat-collecting devcie 2, and the heat energy that displaces through described regenerator 6 enters described heat-collecting devcie 2.
The heat energy that described regenerator 6 displaces enters described heat-collecting devcie 2 to be continued the gas in the described heat-collecting devcie 2 is heated, and has reduced the loss of energy.
Embodiment 6
As shown in Figure 5, the solar power system that present embodiment provides to embodiment 5 basis, is provided with light intensity sensor 203 on described heat-collecting devcie 2 surfaces in embodiment 2, is used for measuring in real time the illumination intensity on described heat-collecting devcie 2 surfaces; Described controller 4 is realized the data communication transmission with described light intensity sensor 203, receives the measured value of described light intensity sensor 203; Described controller 4 is built-in with the analytic operation unit, according to the measured value of described light intensity sensor 203 and described temperature transducer 201 and/or pressure transducer 202, controls described the second controllable valve 7 and described the first controllable valve 8.
Controlling method for the solar power system in the present embodiment, in the described Step II, described controller 4 obtains described light intensity sensor 203 measured values by the data communication transmission, analytic operation unit by using feed-forward regulation algorithm calculates the temperature T of the heat absorption working medium of described heat-collecting devcie 2 exhaust ports according to light intensity sensor 203 measured values ' and/or pressure P ', with T+T ' and/or the P+P ' foundation as control the first controllable valve 8 and the second controllable valve 7.
By utilizing the method computing of feed-forward regulation to draw gas temperature T ' and/or the pressure P ' of described heat-collecting devcie 2 exhaust ports according to described heat-collecting devcie 2 surperficial light intensity, with T+T ' and/or the P+P ' foundation as control the first controllable valve 8 and the second controllable valve 7, the mode that has been equivalent to adopt feed-forward regulation to combine with feedback regulation has improved the control accuracy of system on largely and to the utilization ratio of solar energy.
Obviously, above-described embodiment only is for example clearly is described, and is not the restriction to mode of execution.For those of ordinary skill in the field, can also make other changes in different forms on the basis of the above description.Here need not also can't give all mode of executions exhaustive.And the apparent variation of being extended out thus or change still are among the protection domain of the invention.
Claims (15)
1. a solar power system is characterized in that, comprising:
Gas compressor (100), compression enters the air of system, and the pressurized gas of formation are discharged from relief opening;
Calm the anger and drive turbine (102), through impeller coaxial be connected of transmission shaft (101) with described gas compressor (100), described calming the anger drives turbine (102) and synchronously rotation of described gas compressor (100), and the described relief opening that drives turbine (102) of calming the anger links to each other by the suction port of gas channel with first group of power take-off (3);
Heat-collecting devcie (2), absorb the heat of solar energy, its suction port receives described pressurized gas by gas channel from the relief opening of described gas compressor (100), and described pressurized gas are at the inner high temperature and high pressure gas that forms after solar energy heating of described heat-collecting devcie (2); Described heat-collecting devcie (2) exhaust ports is provided with temperature transducer (201) and/or pressure transducer (202), is used for measuring temperature and/or the pressure of described heat-collecting devcie (2) exhaust ports gas;
Described heat-collecting devcie (2) relief opening is exported high temperature and high pressure gas by at least two gas channels:
Article one, the high temperature and high pressure gas of first output port (K1) of gas channel discharge enters described calming the anger by gas channel and drives the suction port of turbine (102);
Second output port (K2) of at least one gas channel links to each other by the suction port of gas channel with second group of power take-off (3), the high temperature and high pressure gas of described the second output port (K2) output enters the suction port of second group of described power take-off (3), drive second group of described power take-off (3) generating, described the second output port (K2) locates to be provided with the first controllable valve (8);
Controller (4), realize the data communication transmission with described temperature transducer (201) and/or pressure transducer (202), temperature and/or the pressure of the high temperature and high pressure gas that measures according to described temperature transducer (201) and/or pressure transducer (202) control described the first controllable valve (8).
2. described solar power system according to claim 1 is characterized in that:
Be provided with the second controllable valve (7) on the gas channel between the suction port of described the calm the anger relief opening that drives turbine (102) and first group of described power take-off (3), described controller (4) is controlled described the second controllable valve (7) according to temperature and/or the pressure of the gas that described temperature transducer (201) and/or pressure transducer (202) measure.
3. described solar power system according to claim 1 and 2 is characterized in that:
Each described power take-off (3) comprises power output turbine (301) and the generator (302) of coaxial connection, and the high temperature and high pressure gas that enters described power take-off (3) drives described power output turbine (301) and rotates and then drive described generator (302) generating.
4. described solar power system according to claim 3 is characterized in that:
Every group of power take-off comprises at least described power take-off of two-stage (3), and the gas that the output of power described in the described power take-off of previous stage (3) turbine (301) relief opening is discharged enters the suction port of the described power output turbine (301) in the described power take-off of rear one-level (3).
5. it is characterized in that according to claim 3 or 4 described solar power systems:
Described power output turbine (301) specification in each described power take-off (3) is identical.
6. arbitrary described solar power system according to claim 3-5 is characterized in that:
Connect on the gas channel of the described power take-off of adjacent two-stage (3) and be provided with controlled two-way valve (9), each described two-way valve (9) is by its first port (9a) UNICOM gas channel.
7. solar power system according to claim 6 is characterized in that:
Exhaust ports at each described power output turbine (301) is provided with temperature measuring equipment (31), and described temperature measuring equipment (31) is measured the temperature of corresponding described power output turbine (301) exhaust ports gas;
Described controller (4) is realized the data communication transmission with described temperature measuring equipment (31), receive the measured value of described temperature measuring equipment (31), control the state of corresponding described two-way valve (9) according to the measured value of described temperature measuring equipment (31).
8. it is characterized in that according to claim 6 or 7 described solar power systems:
System also comprises:
Regenerator (6), its suction port is by the relief opening UNICOM of the second port (9b) with the described power output turbine (301) of each described two-way valve (9); Its air outlet is by the suction port UNICOM of gas channel and described heat-collecting devcie (2), and the heat energy that displaces through described regenerator (6) enters described heat-collecting devcie (2).
9. arbitrary described solar power system according to claim 1-8 is characterized in that:
Described heat-collecting devcie (2) surface is provided with light intensity sensor (203), is used for measuring in real time the illumination intensity on described heat-collecting devcie (2) surface;
Described controller (4) is realized the data communication transmission with described light intensity sensor (203), receives the measured value of described light intensity sensor (203); Described controller (4) is built-in with the analytic operation unit, according to the measured value of described light intensity sensor (203) and described temperature transducer (201) and/or pressure transducer (202), control described the second controllable valve (7) and described the first controllable valve (8).
10. the controlling method of a solar power system adopts the arbitrary described solar power system of claim 1-9, it is characterized in that: comprise the steps:
I. the temperature transducer (201) that arranges of heat-collecting devcie (2) exhaust ports and/or pressure transducer (202) temperature T and/or the pressure P that measure in real time described heat-collecting devcie (2) exhaust ports gas;
II. controller (4) transmits the measured value that obtains described temperature transducer (201) and/or pressure transducer (202), the first threshold T built-in with it by data communication
1And/or P
1Compare:
If T＜T
1And/or P＜P
1, to control the first controllable valve (8) and disconnect, the heat-driven that described heat-collecting devcie (2) produces is calmed the anger and is driven turbine (102) rotation, the heat circulation in the keeping system;
If T＞T
1And/or P＞P
1, control described the first controllable valve (8) UNICOM;
The gas that described heat-collecting devcie (2) is discharged drives turbine (102) first group of power take-off of rear driving (3) generating through described calming the anger;
The gas that described heat-collecting devcie (2) is discharged generates electricity through the second output port (K2) second group of power take-off of rear driving (3).
11. controlling method according to claim 10 is characterized in that:
Described controller (4) is built-in with Second Threshold T
2And/or P
2, T wherein
1＞T
2, P
1＞P
2:
In the described Step II:
If T＜T
2And/or P＜P
2Controlling described the first controllable valve (8) and the second controllable valve (7) disconnects, system is in not generating state, and described the calming the anger of the heat-driven that described heat-collecting devcie (2) produces drives turbine (102) rotation, the heat circulation in the keeping system;
If T
2＜T＜T
1And/or P
2＜P＜P
1Control described the second controllable valve (7) UNICOM and described the first controllable valve (8) and disconnect, the gas that described heat-collecting devcie (2) is discharged drives turbine (102) first group of described power take-off of rear driving (3) generating through described calming the anger;
If T＞T
1And/or P＞P
1, control described the second controllable valve (7) and described the first controllable valve (8) UNICOM,
The gas that described heat-collecting devcie (2) is discharged drives turbine (102) first group of described power take-off of rear driving (3) generating through described calming the anger;
The gas that described heat-collecting devcie (2) is discharged generates electricity through the second output port (K2) second group of described power take-off of rear driving (3).
12. controlling method according to claim 11 is characterized in that:
In the described Step II, described controller (4) is built-in with the threshold value T of the control described power take-off of every one-level (3) generating
NAnd/or P
N(N=3,4,5 ...):
If T
N-1＜T＜T
NAnd/or P
N-1＜P＜P
NThe time, two-way valve (9) corresponding to control disconnects with the first port (9a);
If T＞T
NAnd/or P＞P
NThe time, described two-way valve (9) corresponding to control is communicated with described the first port (9a), and the power output turbine (301) behind the described two-way valve of gas-powered (9) that the power output turbine (301) in the described power take-off of described two-way valve (9) previous stage (3) is discharged in the described power take-off of one-level (3) drives generator (302) generating.
13. controlling method according to claim 12 is characterized in that:
The exhaust ports of each described power output turbine (301) is provided with temperature measuring equipment (31), and described temperature measuring equipment (31) is measured the temperature τ of corresponding described power output turbine (301) exhaust ports gas;
Described controller (4) obtains the measured value of described temperature measuring equipment (31) by the data communication transmission, with its built-in corresponding described power output turbine (301) relief opening temperature threshold τ
ThCompare:
If τ＜τ
Th, control described two-way valve (9) thereafter disconnects with described the first port (9a);
If τ＞τ
Th, control described two-way valve (9) thereafter and described the first port (9a) UNICOM.
14. according to claim 12 or 13 described controlling methods, it is characterized in that:
System also comprises regenerator (6), and its suction port is by the relief opening UNICOM of the second port (9b) with the described power output turbine (301) of described two-way valve (9);
When described two-way valve (9) and described the first port (9a) disconnect and described the second port (9b) UNICOM.
15. arbitrary described controlling method according to claim 10-14 is characterized in that:
Among the described step I, described heat-collecting devcie (2) surface also is provided with light intensity sensor (203), is used for measuring in real time the illumination intensity on described heat-collecting devcie (2) surface;
In the described Step II, described controller (4) obtains described light intensity sensor (203) measured value by the data communication transmission, analytic operation unit by using feed-forward regulation algorithm calculates the temperature T of the heat absorption working medium of described heat-collecting devcie (2) exhaust ports according to light intensity sensor (203) measured value ' and/or pressure P ', with T+T ' and/or the P+P ' foundation as control the first controllable valve (8) and the second controllable valve (7).
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210106035.4A CN103375368B (en) | 2012-04-12 | 2012-04-12 | A kind of solar power system and controlling method thereof |
| PCT/CN2013/074014 WO2013152721A1 (en) | 2012-04-12 | 2013-04-10 | Solar power generating system and control method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210106035.4A CN103375368B (en) | 2012-04-12 | 2012-04-12 | A kind of solar power system and controlling method thereof |
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| CN103375368A true CN103375368A (en) | 2013-10-30 |
| CN103375368B CN103375368B (en) | 2016-01-20 |
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| WO (1) | WO2013152721A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105486942A (en) * | 2015-11-19 | 2016-04-13 | 绍兴文理学院 | Tower type solar thermal power generation system tester and test method thereof |
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| US5704209A (en) * | 1994-02-28 | 1998-01-06 | Ormat Industries Ltd | Externally fired combined cycle gas turbine system |
| CN101968041B (en) * | 2010-09-29 | 2012-05-30 | 武汉凯迪工程技术研究总院有限公司 | Solar power generation method and system taking biomass boiler as auxiliary heat source |
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- 2012-04-12 CN CN201210106035.4A patent/CN103375368B/en not_active Expired - Fee Related
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| Publication number | Priority date | Publication date | Assignee | Title |
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| US3203167A (en) * | 1962-07-06 | 1965-08-31 | Jr Leon Green | Means and method of utilizing solar energy |
| US4010734A (en) * | 1976-03-10 | 1977-03-08 | Solar Energy Dynamics Corporation | Closed system solar heater |
| US4403601A (en) * | 1979-07-26 | 1983-09-13 | Hunt Arlon J | Radiation receiver |
| US4727930A (en) * | 1981-08-17 | 1988-03-01 | The Board Of Regents Of The University Of Washington | Heat transfer and storage system |
| EP2439388A1 (en) * | 2009-06-05 | 2012-04-11 | Mitsubishi Heavy Industries, Ltd. | Solar gas turbine and solar gas turbine power generating device |
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| CN105486942A (en) * | 2015-11-19 | 2016-04-13 | 绍兴文理学院 | Tower type solar thermal power generation system tester and test method thereof |
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|---|---|
| CN103375368B (en) | 2016-01-20 |
| WO2013152721A1 (en) | 2013-10-17 |
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