CN105841369B - The control method that a kind of tower type solar heliostat field focuses on - Google Patents
The control method that a kind of tower type solar heliostat field focuses on Download PDFInfo
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- CN105841369B CN105841369B CN201610215673.8A CN201610215673A CN105841369B CN 105841369 B CN105841369 B CN 105841369B CN 201610215673 A CN201610215673 A CN 201610215673A CN 105841369 B CN105841369 B CN 105841369B
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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
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- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
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Abstract
The present invention relates to the control method that a kind of tower type solar heliostat field focuses on, belong to solar light-heat power-generation applied technical field.There is presently no the control method that a kind of technique is simple, and the tower type solar heliostat field that hot spot is evenly distributed on receiver focuses on.The invention is characterized in that：The step of control method, is as follows：Block division is done to receiver, the block divided corresponds the section of heliostat field, heliostat in section is respectively focused on the block specified, the hot spot of each section in heliostat field is set to focus on corresponding block on receiver respectively, to disperse the energy that heliostat field reflects back, and orderly ground dynamic adjusts the distribution of hot spot, the focusing ratio of each block on receiver is thus controlled so that the temperature of receiver is uniform.The technique of the present invention is simple, and hot spot is evenly distributed on receiver, can reduce impact of the high concentration ratio to receiver, improves system reliability and receiver service life.
Description
Technical field
The present invention relates to the control method that a kind of tower type solar heliostat field focuses on, belong to solar light-heat power-generation application
Technical field, in terms of the focus control specifically for controlling tower solar energy system.
Background technology
Solar light-heat power-generation refers to collect solar thermal energy using large scale array parabolic or dish-shaped minute surface, is situated between by heat conduction
Matter is taken away, and produces steam by heat-exchanger rig, with reference to the technique of traditional steam turbine generator, so as to reach the purpose of generating.It is tower
One of solar power generation is important photo-thermal power generation pattern, and most have the pattern of large-scale commercial application prospect.It is
Many large-sized solar speculums, commonly referred to as heliostat are housed, every each all is equipped with tracking very on the place of large area
Mechanism accurately focuses on sunshine reflection on the receiver at the top of one high tower, and the solar energy of absorption is changed into heat
Can, then heat energy is transmitted to heat-conducting medium, by accumulation of heat link, then heat power machine is inputted, expansion work, drive generator, finally
Exported in the form of electric energy.Solar light-heat power-generation system is mainly by optically focused subsystem, collection thermal sub-system, heat accumulation subsystem, hair
The part such as electronic system forms.
Compared to general generation of electricity by new energy, such as wind-powered electricity generation and photovoltaic generation, one important advantage of tower type solar photo-thermal power generation
Being can with relatively inexpensive extensive energy storage.Tower type solar electricity generation system collection two link independences of heat and generating power, pass through heat accumulation
Mode solar energy is stored, avoid and carry out the link of electric power storage using the battery of costliness, so that solar energy is largely deposited
Storage is possibly realized.Just because of this characteristic, the output of tower type solar electricity power is steady, hardly brings shadow to power network
Ring, and can look-ahead and distribution, be greatly enhanced the controllability of power unit, can be with peak clipping Pinggu.Due to there is no other
The common uncertainty of new energy and the problem of fluctuation, tower type solar photo-thermal power generation does not have general generation of electricity by new energy not know
The accounting limitation problem that property is brought.It is extensive to build solar power tower, arranged in pairs or groups by a certain percentage with wind-powered electricity generation and photovoltaic, can be
Solves the peak valley fluctuation problem of wind-powered electricity generation and photovoltaic generation to a certain extent so that power network receives the ability of new energy electric power to increase.
Therefore, the accounting of generation of electricity by new energy is able to breakthrough bottleneck, further increase.
Because the mirror scene product of solar power tower is huge, heliostat is numerous, and the energy density on receiver is very high, gathers
Generally more than 1000 times of light ratio, due to the inhomogeneities for the focusing that the unpredictability of various errors in system is brought so that office
Portion region focusing ratio is often more much higher than expection, and too high energy density is easy to so that the feelings of hot-spot occurs in receiver
Condition, gently then cause heat transfer medium（Refer mainly to fused salt）Decompose or deteriorate, it is heavy then so that receiver burn or burst so that whole
Individual systemic breakdown.This reason governs the development of solar power tower always, can only be reduced at present by reducing focusing ratio
The operating temperature of heat-conducting medium is run to reduce the influence that this problem is brought, but so also reduces the efficiency of system,
Sacrifice the economy of project.Such compromise way seriously hinders the commercialization progress of solar power tower, therefore
Urgent need finds out a kind of method for overcoming this problem.
Also there are some relatively good tower type solar mirror field focus methods now, if publication date is 03 month 2015 11
Day, in Publication No. CN104408527A Chinese patent, disclose a kind of tower type solar heat and power system Jing Chang focusing plan
Slightly optimization method, although tower type solar heat and power system Jing Chang focusing strategy optimization method can receive ensureing heat dump
Energy it is as much as possible under the premise of, make the Energy distribution on heat dump heating surface uniform, be advantageous to protect heat dump, improve change
The thermal efficiency, strengthening system performance, but whole method is relatively complicated, operation inconvenience.
In summary, there is presently no a kind of technique is simple, hot spot is evenly distributed on receiver, can reduce high concentration ratio pair
The impact of receiver, improve the controlling party of the tower type solar heliostat field focusing of system reliability and receiver service life
Method.
The content of the invention
It is an object of the invention to overcome above shortcomings in the prior art, and it is simple to provide a kind of technique, receives
Hot spot is evenly distributed on device, can reduce impact of the high concentration ratio to receiver, improves system reliability and receiver service life
Tower type solar heliostat field focus on control method.
Technical scheme is used by the present invention solves the above problems：The controlling party that the tower type solar heliostat field focuses on
Method, the tower type solar structure in the control method include collection thermal tower, receiver and the heliostat being made up of several heliostats
, the receiver is arranged on collection thermal tower, it is characterised in that：The step of control method, is as follows：Block is done to receiver
Dividing, the section of the block one-to-one corresponding heliostat field divided, the heliostat in section is respectively focused on the block specified,
The hot spot of each section in heliostat field is focused on corresponding block on receiver respectively, reflected back with scattered heliostat field
Energy, and it is orderly ground dynamic adjust hot spot distribution, thus control receiver on each block focusing ratio so that receiver
Temperature it is uniform.And then control the temperature distribution history on receiver so that light distribution and Temperature Distribution tend on receiver
Rationally, alleviate the stress problem brought due to the temperature difference, thus reduce the impact that receiver is subject to, improve the reliability of system and connect
Receive the life-span of device.Block has one-to-one relation on the receiver for the section of whole heliostat field division, does not omit, does not also have
There is one-to-many situation.
Preferably, it is of the invention by calculating the spot size size of each heliostat of a certain moment on the receiver, with
Spot size and heliostat position carry out burst area as partitioning standards to the heliostat of heliostat field, by the block of receiver and
The corresponding relation dynamic of heliostat field section adjusts；Various Seasonal, different time, the position of the sun are all changing, each settled date
The spot size of mirror can also change, and need to calculate the change curve of heliostat spot size every day in 1 year in advance, and by
This section to heliostat field is repartitioned, in a certain time interval（Such as one hour）Adjust, it is ensured that real-time optimization gathers
It is burnt so that the temperature of receiver is uniform, prevents trouble before it happens, and reduces the situation that receiver overheat is burnt.
Preferably, the block divided on receiver of the present invention is divided into static blocks and dynamic block, static blocks are drawn
The area divided is larger, the energy that the heliostat of main absorption distance farther out reflects back（Hot spot is larger）, corresponding heliostat field
Section is relatively fixed；The area of dynamic block division is smaller, the energy that the nearer heliostat of main absorption distance reflects back（Hot spot
It is smaller）, and change the spot size change brought over time according to corresponding heliostat field section and recombinated and divided.It is quiet
Jing Chang sections corresponding to state block are relatively fixed, and the hot spot of the heliostat reflection in section gathers the focusing in static zones all the time
On point, unless special circumstances occur, otherwise without modification.In order to receive larger area hot spot（From distant heliostat）
Energy, the Area comparison of static blocks division is big, is normally at and faces that heliostat quantity is most, be distributed farthest one
Side.For the heliostat of distance set thermal tower farther out, due to distant, facula area is big, even if less tracking error also can
So that hot spot significantly moves, or even deflects away from receiver scope, controllability is poor, therefore is typically all included in and static blocks pair
The section answered, and focus point is arranged on the central point of static region, reduce the probability that hot spot deflects away from receiver；Dynamic block
Typically divided smaller generally about in static region surrounding, dynamic block, quantity is relatively more, and the central point of each block is made
For a focus point, the heliostat for coming from a certain section is received（Closer to the distance）The sunshine of reflection, changes over time,
Spot size changes therewith, certain adjustment is done section to Jing Chang corresponding to receiver block in intervals, with excellent
Change and focus on, it is ensured that the energy on receiver is uniformly received.Corresponding to dynamic block the settled date lens region generally proximate to collection thermal tower,
Because distance is near, the hot spot of single heliostat is relatively small, and focusing ratio is higher compared to the heliostat hot spot of distant place, and contingency is more
Greatly, it is easier to the situation of hot-spot occur, but also due to apart near, hot spot is smaller, there is certain modulability and controllability, can
As the means for weakening receiver temperature unevenness, timing section adjusts to block-section corresponding relation, optimization hot spot point
Cloth so that uniformity of temperature profile on receiver.
Preferably, structure and heat transfer medium type, flow, the factor of flow direction of the invention by considering receiver,
The energy-flux density that each block of receiver computed in advance can be born, so as to the division for receiver block and heliostat field section
Foundation is provided.
Preferably, the present invention carries out real time temperature distribution curve drawing on receiver in advance, to ensure controlling party
Method is carried out using the flow of feedback adjustment.
Preferably, tower type solar structure of the present invention is in the process of running, when monitoring system still display receiver
There is certain block and exceed warning temperature, or when several block temperature difference are larger, then take unconventional scheme to go adjustment to connect rapidly
Receive device block and the corresponding relation of heliostat field section so that the temperature of receiver is uniform.
Preferably, unconventional scheme of the present invention is to remove the part corresponding settled date without distinction immediately
Mirror, these heliostats being removed is focused on other block, other block refer to the relatively low dynamic block of those temperature and/or
The fringe region of static blocks；Or unconventional scheme is when monitoring system shows that certain block exceedes warning temperature and temperature
Rise rapidly, then part heliostat hot spot is promptly significantly moved, directly do part and abandon light processing, to avoid due to hot-spot
The situation that the receiver brought burns occurs.
Preferably, the present invention on the Northern Hemisphere on, for the receiver of one-way type, heliostat field all on collection thermal tower north,
Receiver takes static blocks placed in the middle, layout type of the dynamic block in both sides；For the receiver of omni-directional, heliostat is surround
Collect thermal tower arrangement, the heliostat on collection thermal tower north is more, and distance is remote, thus north receiver intermediate region divides the mould of static blocks into
Formula, receive and come from heliostat distant in the heliostat field of north, remaining region in receiver is all according to dynamic block
Pattern.
Preferably, the present invention is larger for equipment making trueness error, uncertain bigger system is focused on, in illumination
When stronger, when next conventional adjustment time section is not arrived, each dynamic block is actively used to exchange corresponding area's piece
Mode so that certain section Jing Chang just changes the point of focusing, even certain block with the time interval more shorter than the conventional adjustment period
Optically focused may occur to exceed expected situation, but due to being just transposed to other block, the shifting of hot spot in shorter time interval
The dynamic temperature unevenness reduced to a certain extent on receiver；Consumed by increasing a small amount of driving energy, but reduce hair
The probability that raw receiver overheat is burnt out, prevents trouble before it happens, it is ensured that receiver rides out peak light photograph in the case where not abandoning light
Phase.
Preferably, the present invention when light intensity is larger, distance especially near heliostat is included on receiver incident with it
Light has the section of certain angle, due to incident ray and receiver surface normal angle it is larger when, hot spot is drawn on the receiver
Greatly, focusing ratio declines, so as to reduce the probability of receiver hot-spot.
Preferably, the present invention using thermal infrared imager draw temperature curve, in this, as control and feedback foundation, separately
Several points set thermocouple behind receiver, the demarcation temperature as calibration thermal infrared imager.
Preferably, the present invention is previously according to factors such as the species of receiver concrete structure and heat-conducting medium, flow direction, flows
The energy-flux density that each block can receive is calculated, to do the foundation of the district division.
Preferably, the present invention can suitably expand settled date lens region corresponding to static blocks when illumination is less strong,
To reduce the loss that drive belt is come.
Preferably, situation of the present invention according to equipment precision, can set several focus points in same static region so that
More uniformly spread, but because heliostat hot spot corresponding to static blocks is general all larger, these point distances above may from
It is not far.
Preferably, the present invention sets the low region of some absorptivities as focusing near receiver debugs region,
Whether uncertain focusing center can converge in focusing debugging region, hot spot is then moved on to receiver again in desired location
On upper expected block.
The present invention compared with prior art, has advantages below and effect：Block division is done to receiver, it is fixed to correspond
Solar eyepiece field section, the method by being respectively focused on receiver designated blocks to heliostat in each section, makes heliostat field each
The scattered different blocks on the receiver of light spot energy that section reflection comes, and orderly ground dynamic adjusts the distribution of hot spot, by
This control receiver on temperature distribution history so that light distribution and Temperature Distribution tend to be reasonable on receiver, alleviate due to
The stress problem that the temperature difference is brought, impact of the high concentration ratio to receiver is thus reduced, improve reliability and the receiver longevity of system
Life.Increase the focusing ratio of receiver, improve generating efficiency, so as to improve the economy of tower type solar, may advantageously facilitate business
The development of change.
Brief description of the drawings
Fig. 1 is the structural representation of tower type solar structure in the embodiment of the present invention.
Fig. 2 is the structural representation of receiver in the embodiment of the present invention.
In figure：1-collection thermal tower；2-receiver；3-heliostat；4-static blocks；5-static blocks focus point；6—
Dynamic block；7-dynamic block focus point.
Embodiment
Below in conjunction with the accompanying drawings and the present invention is described in further detail by embodiment, and following examples are to this hair
Bright explanation and the invention is not limited in following examples.
Embodiment.
Referring to Fig. 1 to Fig. 2, the tower type solar in the control method that tower type solar heliostat field focuses in the present embodiment
Structure includes collection thermal tower 1, receiver 2 and the heliostat field being made up of several heliostats 3, and receiver 2 is arranged on collection thermal tower 1.
The step of control method, is as follows：Block division is done to receiver 2, the block divided corresponds the section of heliostat field, piece
Heliostat 3 in area is respectively focused on the block specified, and the hot spot of each section in heliostat field is focused on reception respectively
Corresponding block on device 2, to disperse the energy that heliostat field reflects back, and orderly ground dynamic adjusts the distribution of hot spot, by
The focusing ratio of each block on this control receiver 2 so that the temperature of receiver 2 is uniform.
By calculating spot size size of each heliostat 3 of a certain moment on receiver 2, with spot size and settled date
The position of mirror 3 carries out burst area as partitioning standards to the heliostat 3 of heliostat field, by the block of receiver 2 and heliostat field piece
The corresponding relation dynamic in area adjusts；Various Seasonal, different time, the position of the sun are all changing, and the hot spot of each heliostat 3 is big
It is small also to change, the change curve of the spot size of heliostat every day in 1 year 3 need to be calculated in advance, and thus to heliostat
The section of field is repartitioned, and is adjusted in a certain time interval, it is ensured that real-time optimization focuses on so that the temperature of receiver 2
Uniformly, prevent trouble before it happens, reduce receiver 2 and overheat situation about burning.
The block divided on receiver 2 is divided into static blocks 4 and dynamic block 6, and static blocks 4 are provided with static blocks
Focus point 5, the area that static blocks 4 divide is larger, the energy that the heliostat 3 of main absorption distance farther out reflects back, corresponding
Heliostat field section it is relatively fixed；Dynamic block 6 is provided with dynamic block focus point 7, and the area that dynamic block 6 divides is smaller,
The energy that the main nearer heliostat 3 of absorption distance reflects back, and changed over time according to corresponding heliostat field section
The spot size change brought is recombinated and divided.
By considering the structure and heat transfer medium type, flow, the factor flowed to of receiver 2, reception computed in advance
The energy-flux density that 2 each block of device can be born, to provide foundation for the division of the block of receiver 2 and heliostat field section.
Real time temperature distribution curve drawing on receiver 2 is carried out in advance, to ensure that control method utilizes feedback adjustment
Flow carry out.
The tower type solar structure in the process of running, exceedes when certain block occurs in monitoring system still display receiver 2
Warning temperature, or when several block temperature difference are larger, then take unconventional scheme to go to adjust the block of receiver 2 and settled date rapidly
The corresponding relation of Jing Chang sections so that the temperature of receiver 2 is uniform.
Unconventional scheme makes what these were removed to determine to remove the corresponding heliostat 3 in part without distinction immediately
Solar eyepiece 3 is focused on other block, and other block refers to the marginal zone of the relatively low dynamic block 6 of those temperature and/or static blocks 4
Domain；Or unconventional scheme be when monitoring system show certain block exceed warning temperature and temperature rise it is rapid, then part
The hot spot of heliostat 3 promptly significantly moves, and directly does part and abandons light processing, to avoid the receiver 2 brought due to hot-spot
Situation about burning occurs.
On on the Northern Hemisphere, for the receiver 2 of one-way type, heliostat field all on collection thermal tower 1 north, take quiet by receiver 2
State block 4 is placed in the middle, layout type of the dynamic block 6 in both sides；For the receiver 2 of omni-directional, heliostat 3 is around collection thermal tower 1
Arrangement, the heliostat more than 3 on collection thermal tower 1 north, distance is remote, thus the intermediate region of north receiver 2 divides the mould of static blocks 4 into
Formula, receive and come from heliostat 3 distant in the heliostat field of north, remaining region in receiver 2 is all according to dynamic area
The pattern of block 6.
It is larger for equipment making trueness error, uncertain bigger system is focused on, when light application ratio is stronger,
When not arriving next conventional adjustment time section, actively by the way of each dynamic block 6 exchanges corresponding area's piece so that certain section
Jing Chang just changes the point of focusing with the time interval more shorter than the conventional adjustment period, and the even optically focused of certain block may surpass
Expected situation is crossed, but due to being just transposed to other block in shorter time interval, the movement of hot spot subtracts to a certain extent
Temperature unevenness on few receiver 2；Consumed by increasing a small amount of driving energy, but reduce and the overheat burning of receiver 2 occurs
Bad probability, prevents trouble before it happens, it is ensured that receiver 2 rides out peak value illumination period in the case where not abandoning light.
When light intensity is larger, the especially near heliostat 3 of distance is included on receiver 2 has certain angle with its incident light
Section, due to incident ray and the surface normal angle of receiver 2 it is larger when, hot spot is widened on receiver 2, under focusing ratio
Drop, so as to reduce the probability of the hot-spot of receiver 2.
Just need to take into account the solution of the present invention when doing tower type solar generation system designs, as heliostat 3 size and
Heliostat field distribution, the height of collection thermal tower 1, shape and size of receiver 2 etc..Pass through control method provided by the invention, docking
Receive device 2 and do rational region division, specify the distribution of static blocks 4 and dynamic block 6, and thereby determine that the corresponding settled date
Jing Chang sections.The scope of static blocks 4 and corresponding heliostat field section are determined first, by programme-control, by counterpiece
The sunshine that the heliostat 3 in area reflects is converged on the static blocks focus point 5 in static blocks 4, generally, static zones
Block 4 and corresponding settled date lens region are relatively more fixed（Large spot heliostat generally remotely）, unless special circumstances occur, it is no
Do not change then；The scope of some dynamic blocks 6 and corresponding heliostat field section are then divided, will by programme-control
Delimit the heliostat 3 of section（Small light spot heliostat generally more nearby）It is dynamic on dynamic block 6 corresponding to reflexing to respectively
State block focus point 7, with the size of hot spot in one day, can to corresponding to dynamic block 6 settled date lens region repartition,
As far as possible so that on receiver 2 radiation intensity it is uniform, so that it is guaranteed that the uniformity of temperature profile on receiver 2, do not occur to exceed police
Guard against the situation of temperature.Once certain block temperature exceedes certain value on receiver 2, that is, make interim feedback, reduce corresponding to the block
Heliostat quantity, part heliostat is focused on into the relatively low region of temperature, if certain block temperature increase is excessively rapid, adopted
Take and abandon light processing, to ensure the safety of receiver 2.
The present invention corresponds heliostat field section, heliostat 3 is distinguished in section by doing block division to receiver 2
The method for focusing on designated blocks, the hot spot of each area's piece in mirror field is focused on different blocks on receiver 2 respectively, disperse Jing Chang
The energy that the reflection of heliostat 3 comes, and orderly ground dynamic adjusts the distribution of hot spot, thus controls the Temperature Distribution on receiver 2
Curve so that light distribution and Temperature Distribution tend to be reasonable on receiver 2, alleviate the stress problem brought due to the temperature difference, thus
Impact of the high concentration ratio to receiver 2 is reduced, reliability and the receiver life-span of system are improved, so as to promote tower type solar to send out
The commercialized development of electricity.
Furthermore, it is necessary to illustrate, the specific embodiment described in this specification, the shape of its parts and components, it is named
Title etc. can be different, and the above content described in this specification is only to structure example explanation of the present invention.It is all according to
The equivalence changes or simple change done according to the construction described in inventional idea of the present invention, feature and principle, are included in this hair
In the protection domain of bright patent.Those skilled in the art can do various to described specific embodiment
The modification of various kinds or supplement are substituted using similar mode, without departing from structure of the invention or surmount present claims
Scope defined in book, protection scope of the present invention all should be belonged to.
Claims (10)
1. the control method that a kind of tower type solar heliostat field focuses on, the tower type solar structure in the control method includes
Collect thermal tower, receiver and the heliostat field being made up of several heliostats, the receiver is arranged on collection thermal tower, and its feature exists
In：The step of control method, is as follows：Block division is done to receiver, the block divided corresponds the piece of heliostat field
Area, the heliostat in section are respectively focused on the block specified, and the hot spot of each section in heliostat field is focused on respectively
Corresponding block on receiver, to disperse the energy that heliostat field reflects back, and orderly ground dynamic adjusts the distribution of hot spot,
Thus the focusing ratio of each block on receiver is controlled so that the temperature of receiver is uniform；It is bent that temperature is drawn using thermal infrared imager
Line, in this, as control and the foundation of feedback, separately several points set thermocouple behind receiver, as calibration infrared thermal imagery
The demarcation temperature of instrument；Each area is calculated previously according to the species of receiver concrete structure and heat-conducting medium, flow direction, flow factor
The energy-flux density that block can receive, to do the foundation of the district division；The block divided on receiver be divided into static blocks and
Dynamic block, the area of static blocks division is larger, and the energy that the heliostat of main absorption distance farther out reflects back is corresponding
Heliostat field section is relatively fixed, according to the situation of equipment precision, sets several focus points in same static blocks so that distribution is more
To be uniform；The low region of some absorptivities is set near receiver is in uncertain focusing center as debugging region is focused on
It is no in desired location, can converge in focusing debugging region, then hot spot is moved on on receiver on expected block again.
2. the control method that tower type solar heliostat field according to claim 1 focuses on, it is characterised in that：Pass through calculating
The spot size size of a certain moment each heliostat on the receiver, partitioning standards are used as using spot size and heliostat position
Burst area is carried out to the heliostat of heliostat field, the block of receiver and the corresponding relation of heliostat field section dynamic are adjusted；
Various Seasonal, different time, the position of the sun are all changing, and the spot size of each heliostat can also change, and need to shift to an earlier date
The change curve of heliostat spot size every day in 1 year is calculated, and thus the section of heliostat field is repartitioned, one
Fix time and adjusted in being spaced, it is ensured that real-time optimization focuses on so that the temperature of receiver is uniform, prevents trouble before it happens, and reduction connects
Receive the situation that device overheat is burnt.
3. the control method that tower type solar heliostat field according to claim 1 focuses on, it is characterised in that：Dynamic block
The area of division is smaller, the energy that the nearer heliostat of main absorption distance reflects back, and according to corresponding heliostat field piece
Area changes the spot size change brought and is recombinated and divided over time.
4. the control method that tower type solar heliostat field according to claim 1 focuses on, it is characterised in that：Pass through consideration
Structure and heat transfer medium type, flow, the factor of flow direction of receiver, what each block of receiver computed in advance can be born
Energy-flux density, to provide foundation for the division of receiver block and heliostat field section.
5. the control method that tower type solar heliostat field according to claim 1 focuses on, it is characterised in that：Carry out in advance
Real time temperature distribution curve drawing on receiver, to ensure that control method is carried out using the flow of feedback adjustment.
6. the control method that tower type solar heliostat field according to claim 3 focuses on, it is characterised in that：It is described tower
Solar structure exceedes warning temperature in the process of running, when certain block occurs in monitoring system still display receiver, or several
When the block temperature difference is larger, then unconventional scheme is taken to go to adjust receiver block pass corresponding with heliostat field section rapidly
System so that the temperature of receiver is uniform.
7. the control method that tower type solar heliostat field according to claim 6 focuses on, it is characterised in that：It is described very
The scheme of rule focuses on these heliostats being removed other to remove the corresponding heliostat in part without distinction immediately
On block, other block refers to the relatively low dynamic block of those temperature and/or the fringe region of static blocks；It is or described unconventional
Scheme be when monitoring system show certain block exceed warning temperature and temperature rise it is rapid, then it is part heliostat hot spot is promptly big
Amplitude shift is moved, and is directly done part and is abandoned light processing, is occurred with the situation for avoiding the receiver brought due to hot-spot from burning.
8. the control method that tower type solar heliostat field according to claim 3 focuses on, it is characterised in that：On the Northern Hemisphere
On, for the receiver of one-way type, heliostat field all takes static blocks placed in the middle in collection thermal tower north, receiver, dynamic block
Layout type in both sides；For the receiver of omni-directional, heliostat is around collection thermal tower arrangement, the heliostat on collection thermal tower north
More, distance is remote, thus north receiver intermediate region divides the pattern of static blocks into, and reception comes from north heliostat field middle-range
From heliostat farther out, remaining region in receiver is all according to the pattern of dynamic block.
9. the control method that tower type solar heliostat field according to claim 1 focuses on, it is characterised in that：For equipment
Making trueness error is larger, focuses on uncertain bigger system, when light application ratio is stronger, does not arrive next conventional adjustment
When period, actively by the way of each dynamic block exchanges corresponding area's piece so that certain section Jing Chang is with than conventional adjustment
Period shorter time interval just changes the point of focusing, and the even optically focused of certain block may occur to exceed expected situation, but
Due to being just transposed to other block in shorter time interval, the movement of hot spot reduces the temperature on receiver to a certain extent
Inhomogeneities；Consumed by increasing a small amount of driving energy, but reduce and the probability that receiver overheat is burnt out occurs, prevent in not
So, it is ensured that receiver spends safely peak light in the case where not abandoning light and shines the phase.
10. the control method that tower type solar heliostat field according to claim 1 focuses on, it is characterised in that：In light intensity
When larger, the especially near heliostat of distance is included in the section for having certain angle on receiver with its incident light, due to incident light
When line and larger receiver surface normal angle, hot spot is widened on the receiver, and focusing ratio declines, so as to reduce reception general ability
The probability of portion's overheat.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610215673.8A CN105841369B (en) | 2016-04-08 | 2016-04-08 | The control method that a kind of tower type solar heliostat field focuses on |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610215673.8A CN105841369B (en) | 2016-04-08 | 2016-04-08 | The control method that a kind of tower type solar heliostat field focuses on |
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| CN110749112B (en) * | 2019-12-26 | 2020-04-28 | 浙江中控太阳能技术有限公司 | Control system and method for optimizing tower type solar thermal power station by utilizing reflection tower |
| CN118229038B (en) * | 2024-05-24 | 2024-07-23 | 山东电力建设第三工程有限公司 | Energy scheduling method, medium and equipment for heliostat in photo-thermal mirror field |
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| CN102419016B (en) * | 2011-08-22 | 2012-09-26 | 南京科远自动化集团股份有限公司 | Heliostat target point adjusting method |
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