CN103375368B - A kind of solar power system and controlling method thereof - Google Patents
A kind of solar power system and controlling method thereof Download PDFInfo
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- CN103375368B CN103375368B CN201210106035.4A CN201210106035A CN103375368B CN 103375368 B CN103375368 B CN 103375368B CN 201210106035 A CN201210106035 A CN 201210106035A CN 103375368 B CN103375368 B CN 103375368B
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- gas
- heat
- turbine
- power take
- temperature
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Classifications
-
- 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
-
- 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 present invention discloses a kind of solar power system and controlling method thereof, system, by being provided with temperature transducer and/or pressure transducer in heat-collecting devcie exhaust ports, controls described first controllable valve and the second controllable valve according to the temperature of the heat-collecting devcie exhaust ports gas measured and/or pressure.Controlling method provided by the invention, can carry out rapid adjustment according to sunlight intensity to power generation system, when sunlight is strengthened suddenly or weakened, ensures the stable of power generation system work.Power output turbine in the present invention drives turbine can adopt " non co axial " mounting type with calming the anger, make the layout of motor more flexible, more can adopt, many groups, multistage power exports that turbine is in parallel, tandem compound worm-gear combination, also the load of Independent adjustable joint can respectively be carried, secondary speed is regulated in real time, with the maximum hot merit conversion efficiency giving full play to each turbine according to engine operating condition.
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 course of industrialization, and the dependence of socio-economic development to the energy is more much bigger than developed country.Solar energy is as clean energy resource, inexhaustible, becomes one of main energy sources.Because solar energy can be converted to other form energy multiple, therefore application area also widely.Through exploitation for many years, solar electrical energy generation have also been obtained significant progress.
In prior art, utilize solar energy heating working medium of absorbing heat to obtain high temperature and high pressure gas, utilize high temperature and high pressure gas to drive motive power outputting apparatus to produce mechanical energy and be electric energy by changes mechanical energy further.The system of solar electrical energy generation is utilized to generally comprise following structure:
The multiple system utilizing solar electrical energy generation is had in prior art, as patent documentation CN102182652A discloses a kind of system for solar electrical energy generation, comprise solar energy preheater within the system, for using the deaeration of the pre-hot compression of first portion of the solar energy fluid of heating to produce the pressurized air of heating; Burner, it is operably connected on 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; First turbine, it is operably connected on 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 first turbine; Use the fluid of described Exhaust Gas heating-condensing to produce steam; Solar still/superheater, it is operably connected on described heat recovery steam generator, in order to receive the working fluid of heating from described recovery evaporator generator, heat the working fluid of described heating by the second portion of the solar energy fluid using described heating and produce solar steam; And second turbine, it is configured to the solar steam in order to use the steam that receives from described heat recovery steam generator and receive from described solar still/superheater and drives the second generator.
In said system, the first turbine needs to receive the thermal incineration gas from burner, makes described thermal incineration gas expansion produce Exhaust Gas and drives the first electrical power generators, and this process is still rely on the burning of fuel to produce thermal incineration gas; The solar steam of steam and described solar still/superheater discharge that the second turbine receives described heat recovery steam generator drives the second electrical power generators.Wherein, described recovery evaporator needs to receive the gas of discharging from the first turbine, and receives the gas from burner thermal incineration during the first turbine, therefore still needs the burning of fuel to provide heat.
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, but compared with producing heat with burning fuel, the heat assembling solar beam generation can be different due to season, moment every day is different, weather rain or shine interlocks, very large Strength Changes may be there is at short notice, therefore the heat energy that the second portion of the solar energy fluid of described heating carries can along with season, time, the difference of the situations such as weather and having greatly changed, the temperature of the solar steam that described recovery evaporator is discharged and pressure are just unstable, namely the temperature of solar steam that receives of the second turbine and pressure unstable, this will cause the instability of generated output, farthest can not utilize the heat of solar energy, cause the waste of the energy.Generate electricity even if said system can realize being used alone solar energy, but still there is generated output instability, 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 utilizes in prior art in the system of solar electrical energy generation to cause quantity of heat given up uneven because solar energy is uneven, 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;
To calm the anger driving turbine, be connected with the impeller of described gas compressor is coaxial through transmission shaft, described in calm the anger and drive turbine and described gas compressor synchronous axial system, described in the calm the anger relief opening of driving turbine be connected by the suction port of gas channel with first group of power take-off;
Heat-collecting devcie, absorb the heat of solar energy, 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, for measuring temperature and/or the pressure of described heat-collecting devcie exhaust ports gas;
Described heat-collecting devcie relief opening exports high temperature and high pressure gas by least two gas channels:
Article one, calm the anger described in the high temperature and high pressure gas that the first output port of gas channel is discharged is entered by gas channel and drive the suction port of turbine;
Second output port of at least one gas channel is connected by the suction port of gas channel with second group of power take-off, the high temperature and high pressure gas that described second output port exports enters the suction port of power take-off described in second group, drive power take-off generating described in second group, described second output port place is provided with the first controllable valve;
Controller, realizes data communication with described temperature transducer and/or pressure transducer and transmits, and the temperature of the high temperature and high pressure gas measured according to described temperature transducer and/or pressure transducer and/or pressure control described first controllable valve.
Gas channel between the described suction port driving power take-off described in the relief opening of turbine and first group of calming the anger is provided with the second controllable valve, and the temperature of the gas that described controller measures according to described temperature transducer and/or pressure transducer and/or pressure control described second controllable valve.
Power take-off described in each comprises Power output turbine and the generator of coaxial connection, and the high temperature and high pressure gas entering described power take-off drives described Power output turbine rotation and then drives described electrical power generators.
Often organize power take-off and comprise at least power take-off described in two-stage, the gas that the turbine exhaust of Power output described in power take-off mouth described in previous stage is discharged enters the suction port of the described Power output turbine in power take-off described in rear stage.
Described Power output turbine specification in power take-off described in each is identical.
The gas channel connecting power take-off described in adjacent two-stage is provided with controlled two-way valve, and Twoway valves door described in each is by its first port UNICOM gas channel.
Described in each, the exhaust ports of Power output turbine is provided with temperature measuring equipment, and the temperature of corresponding described Power output turbine exhaust mouth place gas measured by described temperature measuring equipment;
Described controller and described temperature measuring equipment realize data communication and transmit, and 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 second port of two-way valve and the relief opening UNICOM of described Power output turbine described in each; Its air outlet is by the suction port UNICOM of gas channel and described heat-collecting devcie, and the heat energy displaced through described regenerator enters described heat-collecting devcie.
Described heat-collecting devcie surface is provided with light intensity sensor, for measuring the illumination intensity on described heat-collecting devcie surface in real time;
Described controller and described light intensity sensor realize data communication and transmit, and receive the measured value of described light intensity sensor; Described controller is built-in with analytic operation unit, according to the measured value of described light intensity sensor and described temperature transducer and/or pressure transducer, controls described second controllable valve and described 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 that arranges of heat-collecting devcie exhaust ports and/or pressure transducer measure temperature T and/or the pressure P of described heat-collecting devcie exhaust ports gas in real time;
II. controller obtains the measured value of described temperature transducer and/or pressure transducer by data communication transmission, the first threshold T built-in with it
1and/or P
1compare:
If T < is T
1and/or P < P
1, control the first controllable valve and disconnect, the heat-driven that described heat-collecting devcie produces is calmed the anger driving turbine rotation, the recycle heat in keeping system;
If T > is T
1and/or P > P
1, control described first controllable valve UNICOM;
Calm the anger described in the gas warp that described heat-collecting devcie is discharged and drive turbine rear driving first group of power take-off generating;
The gas that described heat-collecting devcie is discharged is through the second output port rear driving second group of power take-off generating.
Described controller is built-in with Second Threshold T
2and/or P
2, wherein T
1> T
2, P
1> P
2:
In described Step II:
If T < is T
2and/or P < P
2, control described first controllable valve and the disconnection of the second controllable valve, system is in not generating state, driving turbine rotation of calming the anger described in the heat-driven that described heat-collecting devcie produces, the recycle heat in keeping system;
If T
2< T < T
1and/or P
2< P < P
1, control described second controllable valve UNICOM and described first controllable valve disconnection, calming the anger described in the gas warp that described heat-collecting devcie is discharged drives power take-off generating described in turbine rear driving first group;
If T > is T
1and/or P > P
1, control described second controllable valve and described first controllable valve UNICOM,
Calm the anger described in the gas warp that described heat-collecting devcie is discharged and drive power take-off generating described in turbine rear driving first group;
The gas that described heat-collecting devcie is discharged is through power take-off generating described in the second output port rear driving second group.
In described Step II, described controller is built-in with the threshold value T controlling power take-off generating described in every one-level
nand/or P
n(N=3,4,5 ...):
If T
n-1< T < T
nand/or P
n-1< P < P
ntime, the two-way valve and the first port that control correspondence disconnect;
If T > is T
nand/or P > P
ntime, control corresponding described two-way valve to be communicated with described first port, the Power output turbine drive electrical generators of Twoway valves described in the gas-powered of the Power output turbine discharge of described Twoway valves in front of the door in power take-off described in one-level behind the door in power take-off described in one-level generates electricity.
Described in each, the exhaust ports of described Power output turbine is provided with temperature measuring equipment, and the temperature τ of corresponding described Power output turbine exhaust mouth place gas measured by described temperature measuring equipment;
Described controller obtains the measured value of described temperature measuring equipment by data communication transmission, the corresponding described Power output Turbine Outlet Temperature threshold tau built-in with it
thcompare:
If τ < is τ
th, control described two-way valve thereafter and described first port disconnects;
If τ > is τ
th, control described two-way valve thereafter and described first port UNICOM.
System also comprises regenerator, second port of its suction port by described two-way valve and the relief opening UNICOM of described Power output turbine;
With described second port UNICOM while described two-way valve and described first port disconnect.
In described step I, described heat-collecting devcie surface is also provided with light intensity sensor, for measuring the illumination intensity on described heat-collecting devcie surface in real time;
In described Step II, described controller obtains described light intensity sensor measured value by data communication transmission, analytic operation unit utilizes feed-forward regulation algorithm to calculate temperature T ' and/or the pressure P ' of the heat absorption working medium of described heat-collecting devcie exhaust ports according to light intensity sensor measured value, using T+T ' and/or P+P ' as the foundation controlling the first controllable valve and the second controllable valve.
Technique scheme tool of the present invention has the following advantages:
1. the power generation system in the present invention, at heat-collecting devcie exhaust ports set temperature sensor and/or pressure transducer, the temperature of real-time measuring set thermal exhaust ports gas and/or pressure, and the state of the first controllable valve that the branch road of gas channel is arranged is exported according to the temperature variation adjustment heat-collecting devcie of gas, UNICOM's state that the first controllable valve is rationally set according to sunlight intensity difference can be realized thus, when sunlight light intensity is very large, after driving first group of power take-off generating, second group of power take-off generating can also be driven, then control second group of power take-off generating of the first controllable valve back, make greatly to improve the utilization ratio of solar energy.
2. the present invention is by first group of power take-off and calm the anger to drive between turbine and arrange the second controllable valve, can further ensure 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 two controllable valves is respectively turn off or UNICOM, do not generate electricity to realize system or control separately first group of power take-off generating or control first group of power take-off and second group of power take-off generating simultaneously, ensureing thus farthest to utilize solar electrical energy generation.
3. the power generation system in the present invention makes Power output turbine export turbine and can disalignment be connected with calming the anger by the structure that reasonably design is inner, simplifies overall structure, reduces cost of production and the maintenance cost of system; Further, the power generation system in the present invention, all Power output turbines all can adopt same size and size, therefore drastically reduce the area part kind, reduce cost of production, are suitable for batch production.
4. the power generation system in the present invention, can by arranging temperature measuring equipment in the exhaust ports of each Power output turbine, measure the temperature of each Power output exhaust ports gas, determine whether to need to drive next group power take-off generating according to measured value, further can improve generated output thus.
5. the electricity-generating control method in the present invention, according to different temperatures and the pressure of heat-collecting devcie outlet port high temperature and high pressure gas, controls different Power output turbine generation respectively, even can the more Power output turbine of cascade, substantially increases generating efficiency.
6. the electricity-generating control method in the present invention, the temperature that the temperature measuring equipment that can be combined in the setting of each Power output turbine exhaust mouth place according to the temperature of heat-collecting devcie exhaust ports gas and/or pressure measures, combine the control program analyzed and obtain controlling each valve, make to obtain maximum efficiency to the utilization of solar energy.
Accompanying drawing explanation
Fig. 1 is the structural representation of a power generation system of the present invention embodiment;
Fig. 2 is the structural representation of a power generation system of the present invention embodiment;
Fig. 3 is the structural representation of a power generation system of the present invention embodiment;
Fig. 4 is the structural representation of a power generation system of the present invention embodiment;
Fig. 5 is the structural representation of a power generation system of the present invention embodiment;
Fig. 6 is the combination schematic diagram of power generation system of the present invention two groups of power take-off;
Fig. 7 is the combination schematic diagram of power generation system of the present invention two groups of group power take-off;
Fig. 8 is the combination schematic diagram of power generation system of the present invention one group of power take-off;
Fig. 9 is the combination schematic diagram of power generation system of the present invention two groups of power take-off;
In figure, reference character is expressed as: 100-gas compressor, 101-transmission shaft, and 102-calms the anger driving turbine, 2-heat-collecting devcie, 201-temperature transducer, 202-pressure transducer, 203-light intensity sensor, 3-power take-off, 301-Power output turbine, 302-generator, 31-temperature measuring equipment, 4-controller, 6-regenerator, 7-second controllable valve, 8-first controllable valve, the controlled two-way valve of 9-, 9a-first port, 9b-second port, 10-power output line., K1-first output port, K2-second output port.
Embodiment
In order to make content of the present invention be more likely to be clearly understood, 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
The 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, described calming the anger drives turbine 102 and described gas compressor 100 synchronous axial system, described in calm the anger and drive the relief opening of turbine 102 to be connected by the suction port of gas channel with first group of power take-off 3;
As preferred embodiment, power take-off 3 described in each comprises Power output turbine 301 and the generator 302 of coaxial connection, and the high temperature and high pressure gas entering described power take-off 3 drives described Power output turbine 301 to rotate and then drives described generator 302 to generate electricity.
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 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 is provided with temperature transducer 201 and/or pressure transducer 202, for measuring temperature and/or the pressure of described heat-collecting devcie 2 exhaust ports gas;
Described heat-collecting devcie 2 relief opening exports high temperature and high pressure gas by least two gas channels:
Article one, calm the anger described in the high temperature and high pressure gas that the first output port K1 of gas channel discharges is entered by gas channel and drive the suction port of turbine 102;
Second output port K2 of at least one gas channel is connected by the suction port of gas channel with second group of power take-off 3, the high temperature and high pressure gas that described second output port K2 exports enters the suction port of power take-off 3 described in second group, drive power take-off 3 described in second group to generate electricity, described second output port K2 place is provided with the first controllable valve 8;
What provide in the present embodiment is the suction port UNICOM of relief opening by the second output port K2 and second group power take-off 3 of a gas channel of described heat-collecting devcie 2, 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 power take-off 3 described in a group.
" first group " and " second group " that there is provided in the present embodiment is just in order to make a distinction the described described power take-off 3 driving turbine 102 relief opening to be connected of calming the anger with the latter linked described power take-off 3 of described first controllable valve 8, and Power output turbine described in these two groups does not have dividing of sequencing and significance level.
And in the present embodiment, as shown in Figure 1, power take-off 3 described in first group only has a described power take-off, power take-off 3 described in second group has two described power take-off, and the suction port of two described power take-off all drives the relief opening of turbine 102 to be connected with described calming the anger.It should be noted that, each number organizing described power take-off 3 is not fixing, and the power that can generate electricity according to actual needs carries out choose reasonable and configuration.
Controller 4, realizes data communication with described temperature transducer 201 and/or pressure transducer 202 and transmits, and the temperature of the high temperature and high pressure gas measured according to described temperature transducer 201 and/or pressure transducer 202 and/or pressure control described first controllable valve 8.
Before system starts, start described gas compressor 100, described gas compressor 100 forms pressurized gas by after the air compressing of the system of entering, then the startup source, outside of described gas compressor 100 can be turned off, after described pressurized gas now after compression are added thermosetting high temperature and high pressure gas in described heat-collecting devcie 2, calm the anger described in entering through the first output port K1 and gas channel and drive the suction port of turbine 102, calm the anger described in driving and drive turbine 102 to rotate, and now although the startup source, outside of described gas compressor 100 has turned off, but with described calming the anger, described gas compressor 100 drives that turbine 102 is coaxial to be connected by described transmission shaft 101, therefore calm the anger described in and when driving turbine 102 to rotate, just can drive the wheel rotation of described gas compressor 100.
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 the temperature T of the described heat-collecting devcie 2 exhaust ports gas of the real-time measurement of pressure transducer 202 and/or pressure P;
II. controller 4 obtains the measured value of described temperature transducer 201 and/or pressure transducer 202 by data communication transmission, the first threshold T built-in with it
1and/or P
1compare:
If T < is T
1and/or P < P
1, 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 to rotate, the recycle heat in keeping system;
If T > is T
1and/or P > P
1, control described first controllable valve 8 UNICOM;
Calming the anger described in the gas warp that described heat-collecting devcie 2 is discharged drives turbine 102 rear driving first group of power take-off 3 to generate electricity;
The gas that described heat-collecting devcie 2 is discharged generates electricity through the second output port K2 rear driving second group of power take-off 3.
For first threshold T in the present embodiment
1and/or P
1, by power and the efficiency of described power take-off 3, and the number of described power take-off 3 is determined, as T > T
1and/or P > P
1time, the energy that described heat-collecting devcie 2 exhaust ports high temperature and high pressure gas produces is enough to power take-off 3 described in power take-off 3 described in driving first group and second group and generates electricity, therefore by described first controllable valve 8 UNICOM.
Adopt the solar power system in the present embodiment and controlling method, when sunlight light is more weak, the air temperature in described heat-collecting devcie 2 and pressure are not enough to power take-off 3 (i.e. T < T described in driving first group
1and/or P < P
1) and power take-off 3 described in second group generate electricity simultaneously, described first controllable valve 8 is disconnected; When sunlight light is stronger, the temperature of the gas of described heat-collecting devcie 2 exhaust ports and pressure can drive first group of power take-off 3 and second group of power take-off 3 all to generate electricity (i.e. T > T
1and/or P > P), can by described first controllable valve 8 UNICOM;
Adopt the solar power system in the present embodiment, the complete temperature according to described heat-collecting devcie 2 relief opening high temperature and high pressure gas and/or pressure values control the state of described first controllable valve 8, and then the described power take-off 3 controlling different group number generates electricity, therefore according to the difference of solar beam intensity, generated output also adjusts to some extent, realizes the maximum value to Solar use efficiency.
embodiment 2
The solar power system that the present embodiment provides, in order to can when sunlight light is stronger generated output larger, as shown in Figure 2, on the basis of embodiment 1, gas channel between the described suction port driving power take-off 3 described in the relief opening of turbine 102 and first group of calming the anger is provided with the second controllable valve 7, and the temperature of the gas that described controller 4 measures according to described temperature transducer 201 and/or pressure transducer 202 and/or pressure control described second controllable valve 7; The temperature of the high temperature and high pressure gas that described controller 4 measures according to described temperature transducer 201 and/or pressure transducer 202 and/or pressure control described second controllable valve 7.
Described controller 4 is built-in with Second Threshold T
2and/or P
2, wherein T
1> T
2, P
1> P
2:
In described Step II:
If T < is T
2and/or P < P
2, control the first controllable valve 8 and the second controllable valve 7 disconnects, system is in not generating state, and the heat-driven that described heat-collecting devcie 2 produces is calmed the anger and driven turbine 102 to rotate, the recycle heat in keeping system;
If T
2< T < T
1and/or P
2< P < P
1, control described second controllable valve 7 UNICOM and described first controllable valve 8 disconnects, described heat-collecting devcie 2 gas of discharging through described in calm the anger and drive power take-off 3 described in turbine 102 rear driving first group to generate electricity;
If T > is T
1and/or P > P
1, control described second controllable valve 7 and described first controllable valve 8 UNICOM,
Calming the anger described in the gas warp that described heat-collecting devcie 2 is discharged drives turbine 102 rear driving first group of power take-off 3 to generate electricity;
The gas that described heat-collecting devcie 2 is discharged generates electricity through the second output port K2 rear driving second group of power take-off 3.
Adopt the solar power system in the present embodiment and controlling method, when sunlight light is more weak, the air temperature in described heat-collecting devcie 2 and pressure are not enough to drive described power take-off generating (i.e. T < T
2and/or P < P
2), described first controllable valve 8 and described second controllable valve 7 are all disconnected, system is in not generating state; When sunlight light is stronger, the temperature of the air in described heat-collecting devcie 2 and pressure can drive power take-off 3 described in first group to generate electricity (i.e. T
2< T < T
1and/or P
2< P < P
1), can, by described second controllable valve 7 UNICOM, drive power take-off 3 described in first group to generate electricity; When sunlight light is very strong, in described heat-collecting devcie 2 temperature of air and pressure drive described in calm the anger and drive turbine 102, and then to drive described at least one group after power take-off 3 generates electricity, more described power take-off 3 can also be driven to generate electricity (i.e. T > T
1and/or P > P
1), therefore control described first controllable valve 8 UNICOM, the high temperature and high pressure gas that described heat-collecting devcie 2 relief opening is discharged drives first group of power take-off 3 and second group of power take-off 3 to generate electricity by two gas channels respectively.
embodiment 3
Following improvement is made on the basis of embodiment 1 and embodiment 2 any embodiment, often organize power take-off and comprise at least power take-off 3 described in two-stage, the gas that the relief opening of Power output turbine 301 described in power take-off 3 described in previous stage is discharged enters the suction port of the described Power output turbine 301 in power take-off 3 described in rear stage.
Can be specifically only have power take-off 3 described in first group to comprise at least power take-off 3 described in two-stage, the suction port of the described Power output turbine 301 after the gas that the relief opening of Power output turbine 301 described in power take-off 3 described in previous stage is discharged enters in power take-off 3 described in a group.
Also can make to only have power take-off 3 described in second group to comprise at least two-stage power take-off 3, the gas that the relief opening of Power output turbine 301 described in power take-off 3 described in previous stage is discharged enters the suction port of the described Power output turbine 301 in power take-off 3 described in rear stage.
The suction port of described Power output turbine 301 that the gas of discharging for Power output turbine 301 relief opening described in the previous stage described in the present embodiment enters in power take-off 3 described in rear stage includes but not limited to following combining form:
As shown in Figure 6, the gas that in previous stage, Power output turbine 301 described in each is discharged directly can enter the suction port of all Power output turbines 301 of rear stage; As shown in Figure 7, the gas that previous stage Power output turbine 301 described in each is discharged enters the suction port of all Power output turbines 301 of rear stage after unified gas channel;
In addition, all Power output turbines 301 in power take-off 3 described in every one-level can accept the gas that power take-off 3 described in previous stage is discharged, situation as shown in Figure 6 and Figure 7; Or the gas that power take-off 3 described in previous stage is discharged enters the suction port of the Power output turbine 301 in power take-off 3 described in rear stage successively, as shown in Figure 8.Can certainly the combination of aforesaid way, as shown in Figure 9.
In the present embodiment, described Power output turbine 301 specification in power take-off 3 described in each can be identical.The type of the component in whole system so just can be made to greatly reduce, and the structure simplifying whole system also makes the cost of whole system greatly reduce.
As the preferred implementation of the present embodiment, as shown in Figure 9, the gas channel connecting power take-off 3 described in adjacent two-stage is provided with controlled two-way valve 9, described in each, two-way valve 9 is by its first port 9a UNICOM gas channel.
Corresponding in Step II described in the solar power system in the present embodiment, described controller 4 is built-in with and controls the threshold value T that described in every one-level, power take-off 3 generates electricity
nand/or P
n(N=3,4,5 ...):
If T
n-1< T < T
nand/or P
n-1< P < P
ntime, the two-way valve 9 and the first port 9a that control correspondence disconnect;
If T > is T
nand/or P > P
ntime, control corresponding described two-way valve 9 to be communicated with described first port 9a, Power output turbine 301 drive electrical generators 302 in power take-off 3 described in two-way valve 9 rear stage described in the gas-powered that the Power output turbine 301 in power take-off 3 described in described two-way valve 9 previous stage is discharged generates electricity.
For threshold value T in the present embodiment
nand/or P
nselection be also relevant according to the quantity of the power take-off 3 connect after described two-way valve 9.Therefore when controlling different described two-way valves 9, the threshold value T of institute's foundation
nand/or P
nnot identical.
embodiment 4
As shown in Figure 4, on the basis of embodiment 3, described in each, the exhaust ports of described Power output turbine 301 is provided with temperature measuring equipment 31, and the temperature of corresponding described Power output turbine 301 exhaust ports gas measured by described temperature measuring equipment 31;
Described controller 4 realizes data communication with described temperature measuring equipment 31 and transmits, and 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 obtains the measured value of described temperature measuring equipment 31 by data communication transmission, the corresponding described Power output turbine 301 exhaust port temperatures threshold tau built-in with it
thcompare:
If τ < is τ
th, the described two-way valve 9 controlled thereafter disconnects with described first port 9a;
If τ > is τ
th, control described two-way valve 9 thereafter and described first port 9a UNICOM.
For temperature threshold τ
thselection, be also relevant according to the quantity of the described power take-off 3 according to connecing after described two-way valve 9.Therefore 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 the present embodiment provides, on the basis of embodiment 1 to embodiment 4 any embodiment, can do following improvement:
System also comprises:
Regenerator 6, its suction port is by the second port 9b of two-way valve 9 and the relief opening UNICOM of described Power output turbine 301 described in each; Its air outlet is by the suction port UNICOM of gas channel and described heat-collecting devcie 2, and the heat energy displaced 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 to heat the gas in described heat-collecting devcie 2, reduces the loss of energy.
embodiment 6
As shown in Figure 5, the solar power system that the present embodiment provides, on the basis of embodiment 2 to embodiment 5, is provided with light intensity sensor 203 on described heat-collecting devcie 2 surface, for measuring the illumination intensity on described heat-collecting devcie 2 surface in real time; Described controller 4 realizes data communication with described light intensity sensor 203 and transmits, and receives the measured value of described light intensity sensor 203; Described controller 4 is built-in with 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 second controllable valve 7 and described first controllable valve 8.
For the controlling method of the solar power system in the present embodiment, in described Step II, described controller 4 obtains described light intensity sensor 203 measured value by data communication transmission, analytic operation unit utilizes feed-forward regulation algorithm to calculate temperature T ' and/or the pressure P ' of the heat absorption working medium of described heat-collecting devcie 2 exhaust ports according to light intensity sensor 203 measured value, using T+T ' and/or P+P ' as the foundation controlling the first controllable valve 8 and the second controllable valve 7.
Gas temperature T ' and/or the pressure P ' of described heat-collecting devcie 2 exhaust ports is drawn by can utilize the method computing of feed-forward regulation according to the surperficial light intensity of described heat-collecting devcie 2, using T+T ' and/or P+P ' as the foundation controlling the first controllable valve 8 and the second controllable valve 7, be equivalent to have employed the mode that feed-forward regulation combines with feedback regulation, largely, improve the control accuracy of system and the utilization ratio to solar energy.
Obviously, above-described embodiment is only for clearly example being described, and the restriction not 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 exhaustive without the need to also giving all mode of executions.And thus the apparent change of extending out or variation be still among the protection domain of the invention.
Claims (16)
1. a solar power system, 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), be connected with the impeller of described gas compressor (100) is coaxial through transmission shaft (101), described calm the anger drive turbine (102) with described gas compressor (100) synchronous axial system, described in calm the anger drive turbine (102) relief opening be connected 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 form high temperature and high pressure gas in described heat-collecting devcie (2) inside after solar energy heating;
It is characterized in that:
Described heat-collecting devcie (2) exhaust ports is provided with temperature transducer (201) and/or pressure transducer (202), for measuring temperature and/or the pressure of described heat-collecting devcie (2) exhaust ports gas;
Described heat-collecting devcie (2) relief opening exports high temperature and high pressure gas by least two gas channels:
Article one, calm the anger described in the high temperature and high pressure gas that first output port (K1) of gas channel is discharged is entered by gas channel and drive the suction port of turbine (102);
Second output port (K2) of at least one gas channel is connected by the suction port of gas channel with second group of power take-off (3), the high temperature and high pressure gas that described second output port (K2) exports enters the suction port of power take-off (3) described in second group, drive power take-off (3) generating described in second group, described second output port (K2) place is provided with the first controllable valve (8);
Controller (4), realize data communication with described temperature transducer (201) and/or pressure transducer (202) to transmit, the temperature of the high temperature and high pressure gas measured according to described temperature transducer (201) and/or pressure transducer (202) and/or pressure control described first controllable valve (8).
2. solar power system according to claim 1, is characterized in that:
Gas channel between the described suction port driving power take-off (3) described in the relief opening of turbine (102) and first group of calming the anger is provided with the second controllable valve (7), and the temperature of the gas that described controller (4) measures according to described temperature transducer (201) and/or pressure transducer (202) and/or pressure control described second controllable valve (7).
3. solar power system according to claim 2, is characterized in that:
Power take-off described in each (3) comprises Power output turbine (301) and the generator (302) of coaxial connection, and the high temperature and high pressure gas entering described power take-off (3) drives described Power output turbine (301) to rotate and then drives described generator (302) to generate electricity.
4. solar power system according to claim 3, is characterized in that:
Often organize power take-off and comprise at least power take-off described in two-stage (3), the gas that Power output turbine (301) relief opening described in power take-off described in previous stage (3) is discharged enters the suction port of the described Power output turbine (301) in power take-off described in rear stage (3).
5. solar power system according to claim 4, is characterized in that:
Described Power output turbine (301) specification in power take-off described in each (3) is identical.
6. solar power system according to claim 5, is characterized in that:
The gas channel connecting power take-off (3) described in adjacent two-stage is provided with controlled two-way valve (9), and two-way valve (9) described in each is by its first port (9a) UNICOM gas channel.
7. solar power system according to claim 6, is characterized in that:
Described in each, the exhaust ports of Power output turbine (301) is provided with temperature measuring equipment (31), and the temperature of corresponding described Power output turbine (301) exhaust ports gas measured by described temperature measuring equipment (31);
Described controller (4) and described temperature measuring equipment (31) realize data communication and transmit, 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. solar power system according to claim 7, is characterized in that:
System also comprises:
Regenerator (6), its suction port is by second port (9b) of two-way valve (9) described in each and the relief opening UNICOM of described Power output turbine (301); Its air outlet is by the suction port UNICOM of gas channel and described heat-collecting devcie (2), and the heat energy displaced through described regenerator (6) enters described heat-collecting devcie (2).
9. solar power system according to claim 2, is characterized in that:
Described heat-collecting devcie (2) surface is provided with light intensity sensor (203), for measuring the illumination intensity on described heat-collecting devcie (2) surface in real time;
Described controller (4) and described light intensity sensor (203) realize data communication and transmit, and receive the measured value of described light intensity sensor (203); Described controller (4) is built-in with 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 second controllable valve (7) and described first controllable valve (8).
10. solar power system according to claim 1, is characterized in that:
Power take-off described in each (3) comprises Power output turbine (301) and the generator (302) of coaxial connection, and the high temperature and high pressure gas entering described power take-off (3) drives described Power output turbine (301) to rotate and then drives described generator (302) to generate electricity.
The controlling method of 11. 1 kinds of solar power systems, adopts the arbitrary described solar power system of claim 2-9, it is characterized in that: comprise the steps:
I. the temperature transducer (201) of heat-collecting devcie (2) exhaust ports setting and/or the temperature T of the real-time measurement of pressure transducer (202) described heat-collecting devcie (2) exhaust ports gas and/or pressure P;
II. controller (4) obtains the measured value of described temperature transducer (201) and/or pressure transducer (202) by data communication transmission, the first threshold T built-in with it
1and/or P
1compare:
If T<T
1and/or P<P
1, 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) to rotate, the recycle heat in keeping system;
If T>T
1and/or P>P
1, control described first controllable valve (8) UNICOM;
Calm the anger described in the gas warp that described heat-collecting devcie (2) is discharged and drive turbine (102) rear driving first group of power take-off (3) generating;
The gas that described heat-collecting devcie (2) is discharged is through the second output port (K2) rear driving second group of power take-off (3) generating.
12. controlling methods according to claim 11, is characterized in that:
Described controller (4) is built-in with Second Threshold T
2and/or P
2, wherein T
1>T
2, P
1>P
2:
In described Step II:
If T<T
2and/or P<P
2control described first controllable valve (8) and the second controllable valve (7) disconnection, system is in not generating state, calms the anger and drives turbine (102) to rotate, the recycle heat in keeping system described in the heat-driven that described heat-collecting devcie (2) produces;
If T
2<T<T
1and/or P
2<P<P
1control described second controllable valve (7) UNICOM and described first controllable valve (8) disconnection, calming the anger described in the gas warp that described heat-collecting devcie (2) is discharged drives power take-off (3) generating described in turbine (102) rear driving first group;
If T>T
1and/or P>P
1, control described second controllable valve (7) and described first controllable valve (8) UNICOM,
Calm the anger described in the gas warp that described heat-collecting devcie (2) is discharged and drive power take-off (3) generating described in turbine (102) rear driving first group;
The gas that described heat-collecting devcie (2) is discharged is through power take-off (3) generating described in the second output port (K2) rear driving second group.
13. controlling methods according to claim 12, is characterized in that:
In described Step II, described controller (4) is built-in with and controls the threshold value T that described in every one-level, power take-off (3) generates electricity
nand/or P
n(N=3,4,5 ...):
If T
n-1<T<T
nand/or P
n-1<P<P
ntime, control corresponding two-way valve (9) and disconnect with the first port (9a);
If T>T
nand/or P>P
ntime, control corresponding described two-way valve (9) to be communicated with described first port (9a), Power output turbine (301) drive electrical generators (302) generating in power take-off (3) described in two-way valve (9) rear stage described in the gas-powered that the Power output turbine (301) in power take-off (3) described in described two-way valve (9) previous stage is discharged.
14. controlling methods according to claim 13, is characterized in that:
Described in each, the exhaust ports of described Power output turbine (301) is provided with temperature measuring equipment (31), and the temperature τ of corresponding described Power output turbine (301) exhaust ports gas measured by described temperature measuring equipment (31);
Described controller (4) obtains the measured value of described temperature measuring equipment (31) by data communication transmission, corresponding described Power output turbine (301) the exhaust port temperatures threshold tau built-in with it
thcompare:
If τ < is τ
th, the described two-way valve (9) controlled thereafter disconnects with described first port (9a);
If τ > is τ
th, control described two-way valve (9) thereafter and described first port (9a) UNICOM.
15. controlling methods according to claim 13 or 14, is characterized in that:
System also comprises regenerator (6), second port (9b) of its suction port by described two-way valve (9) and the relief opening UNICOM of described Power output turbine (301);
With described second port (9b) UNICOM while described two-way valve (9) disconnects with described first port (9a).
16. controlling methods according to claim 11, is characterized in that:
In described step I, described heat-collecting devcie (2) surface is also provided with light intensity sensor (203), for measuring the illumination intensity on described heat-collecting devcie (2) surface in real time;
In described Step II, described controller (4) obtains described light intensity sensor (203) measured value by data communication transmission, analytic operation unit utilizes feed-forward regulation algorithm to calculate temperature T ' and/or the pressure P ' of the heat absorption working medium of described heat-collecting devcie (2) exhaust ports according to light intensity sensor (203) measured value, using T+T ' and/or P+P ' as the foundation controlling 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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| Publication Number | Publication Date |
|---|---|
| CN103375368A CN103375368A (en) | 2013-10-30 |
| CN103375368B true CN103375368B (en) | 2016-01-20 |
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|---|---|---|---|
| CN201210106035.4A Expired - Fee Related CN103375368B (en) | 2012-04-12 | 2012-04-12 | A kind of solar power system and controlling method thereof |
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| Country | Link |
|---|---|
| CN (1) | CN103375368B (en) |
| WO (1) | WO2013152721A1 (en) |
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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 |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN101592079A (en) * | 2009-07-02 | 2009-12-02 | 哈尔滨工业大学 | Solar distributed closed gas turbine power generation system |
| CN102182652A (en) * | 2009-12-01 | 2011-09-14 | 通用电气公司 | System for generation of power using solar energy |
| EP2439388A1 (en) * | 2009-06-05 | 2012-04-11 | Mitsubishi Heavy Industries, Ltd. | Solar gas turbine and solar gas turbine power generating device |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
-
2012
- 2012-04-12 CN CN201210106035.4A patent/CN103375368B/en not_active Expired - Fee Related
-
2013
- 2013-04-10 WO PCT/CN2013/074014 patent/WO2013152721A1/en active Application Filing
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN101592079A (en) * | 2009-07-02 | 2009-12-02 | 哈尔滨工业大学 | Solar distributed closed gas turbine power generation system |
| CN102182652A (en) * | 2009-12-01 | 2011-09-14 | 通用电气公司 | System for generation of power using solar energy |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103375368A (en) | 2013-10-30 |
| WO2013152721A1 (en) | 2013-10-17 |
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