CN105202785A - Method and device for controlling light spot of heat collector - Google Patents
Method and device for controlling light spot of heat collector Download PDFInfo
- Publication number
- CN105202785A CN105202785A CN201510586846.2A CN201510586846A CN105202785A CN 105202785 A CN105202785 A CN 105202785A CN 201510586846 A CN201510586846 A CN 201510586846A CN 105202785 A CN105202785 A CN 105202785A
- Authority
- CN
- China
- Prior art keywords
- heat collector
- heliostat
- imageing
- described heat
- hot spot
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- 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
Abstract
The embodiment of the invention discloses a method and device for controlling a light spot of a heat collector. The positioning precision of the light spot can be improved by virtue of closed-loop tracking,, the energy loss of the heat collector caused by the positioning error of the light spot can be reduced, the heat collection efficiency can be improved, the energy distribution stability of the heat collector can be improved, and the control of the heat collector is facilitated; a group of image sensors are arranged surrounding the heat collector, so that the closed-loop control for a great amount of heliostat can be realized. Compared with the traditional method for realizing the closed-loop control by installing a sensor device on the heliostat, fewer sensors are used, the cost is reduced, and the installation and debugging workload can be alleviated.
Description
Technical field
The embodiment of the present invention relates to the technical field of thermal-arrest tower, particularly relates to a kind of method and the device that control heat collector hot spot.
Background technology
Tower type solar photo-thermal power station is a kind of focusing solar electricity generation system.Tower system sets up a thermal-arrest tower, tower top installs heat collector, and install the heliostat of some around thermal-arrest tower, sunshine gathers on the heat collector of tower top by heliostat, produce high-temperature steam by the working medium in heating heat collector, pushing turbine generates electricity.
A large amount of heliostats around thermal-arrest tower form Jing Chang, and the target location that each heliostat in control mirror field makes its focusing sunlight spot accurately project heat collector is the key technology that Jing Chang controls.The sun its elevation angle and azimuth in running constantly change in time, the heliostat focal beam spot moment is made to project on heat collector, need heliostat to follow attitude that the sun constantly adjusts oneself, general heliostat adopts pitch axis and rotating shaft, diaxon tracking control.The control mode of heliostat generally can be divided into opened loop control and closed-loop control two kinds of control modes.Opened loop control calculates each moment sun altitude and azimuth according to sun moving law, in conjunction with the position of heliostat and heat collector, can calculate according to geometric optical theory and will ensure heliostat normal to a surface direction on heliostat dot projection to heat collector, by driving mechanism adjustment heliostat pitch axis and rotating shaft to control heliostat normal direction, the tracking of focal beam spot to heat collector can be realized.The current commercialization power station built up such as the Ivanpah of the U.S. and barchan dune power station are all the open loop control mode adopted.
Open-loop control structures is simply easy to realize, but tracking system mechanical deflection cannot be eliminated due to the method and can accumulated error be produced in Continuous Tracking process, cause tracking accuracy not high, and tracking accuracy can be caused constantly to reduce along with heliostat working time mechanical wear more of a specified duration.Because the low meeting of heliostat tracking accuracy causes accurately controlling the launching position of heliostat focal beam spot on heat collector, thus the energy density distribution that cannot accurately control on heat collector, add heat collector and control difficulty and heat collector local temperature too high damage heat collector or the too low problem such as cause that internal working medium freezes of heat collector local temperature can be caused.
Another kind is close-loop control mode, and close-loop control mode needs to install light sensor on every platform heliostat, and needs the angle adjusting light sensor when will adjust the position of hot spot on heat collector.In commercialization photo-thermal power station, the quantity of heliostat is generally at several thousand to up to ten thousand, and every platform heliostat sensor installation can bring very large cost to increase, and the angle of light sensor will carry out machinery adjustment, and adjustment accurate adjustment is also a difficult problem.
Summary of the invention
How easy the object of the embodiment of the present invention is to propose a kind of method and the device that control heat collector hot spot, be intended to solve the problem realizing closed-loop control.
For reaching this object, the embodiment of the present invention by the following technical solutions:
Control a method for heat collector hot spot, described method comprises:
Start at least three imageing sensors being arranged on described heat collector surrounding;
By closed loop control method and described imageing sensor, described at least three heliostat hot spots are focused on the center of described heat collector.
Preferably, described startup is arranged at least three imageing sensors of described heat collector surrounding, comprising:
Start and be arranged on described heat collector surrounding two imageing sensors up and down symmetrical centered by described heat collector; Or,
Start and be arranged on described heat collector surrounding two, left and right imageing sensor symmetrical centered by described heat collector; Or,
Start and be arranged on described heat collector surrounding upper and lower, four, left and right imageing sensor symmetrical centered by described heat collector; Or,
Start the imageing sensor being arranged on described heat collector surrounding circular distribution symmetrical centered by described heat collector; Or,
Start the imageing sensor being arranged on the preset shape distribution symmetrical centered by described heat collector of described heat collector surrounding.
Preferably, describedly by closed loop control method and described at least three imageing sensors, described heliostat hot spot is focused on the center of described heat collector, comprising:
If the gray value on described at least three imageing sensors is identical, then described heliostat hot spot focuses on the center of described heat collector;
If the gray value on described at least three imageing sensors is not identical, then adjust the position of described heliostat hot spot, the gray value at least three imageing sensors described in making is identical.
Preferably, describedly by closed loop control method and described at least three imageing sensors, described heliostat hot spot is focused on the center of described heat collector, comprising:
If the value preset on described at least three imageing sensors is identical, then described heliostat hot spot focuses on the center of described heat collector;
If the value preset on described at least three imageing sensors is not identical, then adjust the position of described heliostat hot spot, the value preset at least three imageing sensors described in making is identical.
Preferably, described by closed loop control method and described at least three imageing sensors described heliostat hot spot focused on the center of described heat collector before, also comprise:
By being arranged on the filtering apparatus before described imageing sensor, the hot spot of described imageing sensor is made to be in unsaturation state;
The gray value of described imageing sensor is calibrated, makes the gray value of described imageing sensor symmetrical under identical illumination condition identical.
Control a device for heat collector hot spot, described device comprises:
Start module, for starting at least three imageing sensors being arranged on described heat collector surrounding;
Focus module, for focusing on the center of described heat collector by closed loop control method and described imageing sensor by described at least three heliostat hot spots.
Preferably, described startup module comprises:
First start unit, is arranged on described heat collector surrounding two imageing sensors up and down symmetrical centered by described heat collector for starting;
Second start unit, is arranged on described heat collector surrounding two, left and right imageing sensor symmetrical centered by described heat collector for starting;
3rd start unit, is arranged on described heat collector surrounding upper and lower, four, left and right imageing sensor symmetrical centered by described heat collector for starting;
4th start unit, for starting the imageing sensor being arranged on described heat collector surrounding circular distribution symmetrical centered by described heat collector;
5th start unit, for starting the imageing sensor being arranged on the preset shape distribution symmetrical centered by described heat collector of described heat collector surrounding.
Preferably, described focus module, comprising:
First focusing unit, if the gray value on described at least three imageing sensors is identical, then described heliostat hot spot focuses on the center of described heat collector;
Second focusing unit, if the gray value on described at least three imageing sensors is not identical, then adjust the position of described heliostat hot spot, the gray value at least three imageing sensors described in making is identical.
Preferably, described focus module, comprising:
3rd focusing unit, if the value preset on described at least three imageing sensors is identical, then described heliostat hot spot focuses on the center of described heat collector;
4th focusing unit, if the value preset on described at least three imageing sensors is not identical, then adjusts the position of described heliostat hot spot, and the value preset at least three imageing sensors described in making is identical.
Preferably, described device also comprises:
Module being set, for the filtering apparatus by being arranged on before described imageing sensor, making the hot spot of described imageing sensor be in unsaturation state;
Calibration module, for calibrating the gray value of described imageing sensor, makes the gray value of described imageing sensor symmetrical under identical illumination condition identical.
Heliostat hot spot focuses on heat collector by open-loop control method by the embodiment of the present invention; Start at least three imageing sensors being arranged on described heat collector surrounding; By closed loop control method and described imageing sensor, described at least three heliostat hot spots are focused on the center of described heat collector, by the positional information detecting heliostat hot spot, closed-loop control is carried out to heliostat facula position, higher spot location precision can be obtained than opened loop control, reduce the required precision of the frame for movement of heliostat being followed the tracks of to drives structure simultaneously; Improve spot location precision by Closed loop track, can reduce because spot location deviation causes heat collector energy loss, improve collecting efficiency, the stability of heat distribution on heat collector can be improved simultaneously, be conducive to heat collector and control; By placing a picture group image-position sensor thus realize the closed-loop control to a large amount of heliostat around heat collector, with existing compared with sensor installation device above heliostat realizes closed-loop control, the present invention adopts number of sensors less, is easy to reduce costs and reduce installation and debugging workload.
Accompanying drawing explanation
Fig. 1 is the schematic flow sheet that the embodiment of the present invention controls method first embodiment of heat collector hot spot;
Fig. 2 is the structure chart of a kind of tower system that the embodiment of the present invention provides;
Fig. 3 is the mounting structure figure of a kind of imageing sensor that the embodiment of the present invention provides;
Fig. 4 is the schematic flow sheet that the embodiment of the present invention controls method second embodiment of heat collector hot spot;
Fig. 5 is the high-level schematic functional block diagram that the embodiment of the present invention controls the device of heat collector hot spot;
Fig. 6 is the high-level schematic functional block diagram that the embodiment of the present invention starts module;
Fig. 7 is the high-level schematic functional block diagram of embodiment of the present invention focus module;
Fig. 8 is the high-level schematic functional block diagram of embodiment of the present invention focus module;
Fig. 9 is the high-level schematic functional block diagram that the embodiment of the present invention controls the device of heat collector hot spot.
Detailed description of the invention
Below in conjunction with drawings and Examples, the embodiment of the present invention is described in further detail.Be understandable that, specific embodiment described herein is only for explaining the embodiment of the present invention, but not the restriction to the embodiment of the present invention.It also should be noted that, for convenience of description, illustrate only the part relevant to the embodiment of the present invention in accompanying drawing but not entire infrastructure.
Embodiment one
It is the schematic flow sheet of method first embodiment of embodiment of the present invention control heat collector hot spot with reference to figure 1, Fig. 1.
In embodiment one, the method for described control heat collector hot spot comprises:
Step 101, starts at least three imageing sensors being arranged on described heat collector surrounding;
Preferably, described startup is arranged at least three imageing sensors of described heat collector surrounding, comprising:
Start and be arranged on described heat collector surrounding two imageing sensors up and down symmetrical centered by described heat collector; Or,
Start and be arranged on described heat collector surrounding two, left and right imageing sensor symmetrical centered by described heat collector; Or,
Start and be arranged on described heat collector surrounding upper and lower, four, left and right imageing sensor symmetrical centered by described heat collector; Or,
Start the imageing sensor being arranged on described heat collector surrounding circular distribution symmetrical centered by described heat collector; Or,
Start the imageing sensor being arranged on the preset shape distribution symmetrical centered by described heat collector of described heat collector surrounding.
Concrete, the present invention is described in detail for one of them implementation.With reference to the structure chart that figure 2, Fig. 2 is a kind of tower system that the embodiment of the present invention provides.With reference to the mounting structure figure that figure 3, Fig. 3 is a kind of imageing sensor that the embodiment of the present invention provides.
As shown in Figure 2, vertically symmetrical distribution placement four imageing sensors around heat collector, imageing sensor is towards heliostat field, and heliostat hot spot focus objects position is heat collector center for the sun, heliostat, thermal-arrest tower position relationship.In the control procedure of heliostat, focus on heat collector by open loop control mode by heliostat hot spot, due to the existence of machine error and control deviation, focal beam spot not necessarily projects heat collector center.At this moment can start Closed loop track control mode, adjustment heliostat hot spot is to center and heat collector center superposition.Concrete control method is as follows:
Can surface imaging on four imageing sensors around heat collector while on heliostat dot projection to heat collector, need to assemble filtering apparatus before imageing sensor, hot spot on imageing sensor can not be reached capacity, gamma calibration to be carried out to four imageing sensors simultaneously, make at the gray value of identical illumination condition hypograph sensor output identical.Also will calibrating for the direction of four imageing sensors towards Jing Chang in addition, making focal beam spot when projecting heat collector center, on four imageing sensors, the gray value of imaging is identical.Heliostat picture is in the image sensor a hot spot, the mode of statistics can be adopted to calculate its gray value g and represent.When hot spot departs from heat collector center, on four imageing sensors, the gray value of alleged picture can change.Respectively with g1, g2, g3, g4 represent a certain heliostat when a certain position on four imageing sensors the gray value of imaging.Gray-scale deviation signal g13=g1-g3, can reflect facula position deviation in the horizontal direction, and gray-scale deviation signal g24=g2-g4 can reflect the deviation of facula position at vertical direction.By gray-scale deviation signal feedback to the azimuth axis of heliostat and pitch axis guiding mechanism, heliostat azimuth and the angle of pitch are adjusted.It is as follows that gray-scale deviation signal and heliostat driving shaft adjust relation, heliostat hot spot is described near CCD image sensor 1 when g13 is greater than zero away from CCD3, now need to control one side that heliostat hot spot is shifted to close CCD3 by heliostat azimuth axis in the horizontal direction, otherwise shift near CCD1's.Heliostat hot spot is described near CCD image sensor 2 when g24 is greater than zero away from CCD4, now needs to control that heliostat hot spot vertically shifts near CCD4 by heliostat pitch axis, otherwise shift to the one side near CCD2.Need again to detect gray-scale deviation signal g13 and g24 until gray-scale deviation signal makes it value after each adjustment heliostat, now heliostat hot spot is in the predetermined focus target position of heat collector.
When heliostat field has a large amount of heliostat, every platform heliostat can present respective picture in the image sensor, only need tell heliostat picture separately in the picture, do closed-loop control noted earlier to every platform heliostat, can realize all heliostats in mirror field.When cannot cover all heliostats with a picture group image-position sensor for extensive heliostat field, can increase imageing sensor group number, a picture group image-position sensor is responsible for the heliostat controlling a part of region.
Described at least three heliostat hot spots are focused on the center of described heat collector by closed loop control method and described imageing sensor by step 102.
Preferably, describedly by closed loop control method and described at least three imageing sensors, described heliostat hot spot is focused on the center of described heat collector, comprising:
If the gray value on described at least three imageing sensors is identical, then described heliostat hot spot focuses on the center of described heat collector;
If the gray value on described at least three imageing sensors is not identical, then adjust the position of described heliostat hot spot, the gray value at least three imageing sensors described in making is identical.
Preferably, describedly by closed loop control method and described at least three imageing sensors, described heliostat hot spot is focused on the center of described heat collector, comprising:
If the value preset on described at least three imageing sensors is identical, then described heliostat hot spot focuses on the center of described heat collector;
If the value preset on described at least three imageing sensors is not identical, then adjust the position of described heliostat hot spot, the value preset at least three imageing sensors described in making is identical.
The object of this invention is to provide a kind of tower heliostat field Closed loop track control method, can Real-Time Monitoring control heliostat dot projection to the position on heat collector by this closed loop control method, to realize the optimal control of tower heliostat field focal beam spot energy, reduce energy spilling on heat collector, the stability of focal beam spot energy distribution trend on heat collector can be realized by closed-loop control, reduce the complexity that heat collector controls.
Heliostat hot spot focuses on heat collector by open-loop control method by the embodiment of the present invention; Start at least three imageing sensors being arranged on described heat collector surrounding; By closed loop control method and described imageing sensor, described at least three heliostat hot spots are focused on the center of described heat collector, by the positional information detecting heliostat hot spot, closed-loop control is carried out to heliostat facula position, higher spot location precision can be obtained than opened loop control, reduce the required precision of the frame for movement of heliostat being followed the tracks of to drives structure simultaneously; Improve spot location precision by Closed loop track, can reduce because spot location deviation causes heat collector energy loss, improve collecting efficiency, the stability of heat distribution on heat collector can be improved simultaneously, be conducive to heat collector and control; By placing a picture group image-position sensor thus realize the closed-loop control to a large amount of heliostat around heat collector, with existing compared with sensor installation device above heliostat realizes closed-loop control, the present invention adopts number of sensors less, is easy to reduce costs and reduce installation and debugging workload.
Embodiment two
It is the schematic flow sheet of method second embodiment of embodiment of the present invention control heat collector hot spot with reference to figure 4, Fig. 4.
On the basis of embodiment one, described by closed loop control method and described at least three imageing sensors described heliostat hot spot focused on the center of described heat collector before, also comprise:
Step 103, by being arranged on the filtering apparatus before described imageing sensor, makes the hot spot of described imageing sensor be in unsaturation state;
Step 104, calibrates the gray value of described imageing sensor, makes the gray value of described imageing sensor symmetrical under identical illumination condition identical.
Embodiment three
It is the high-level schematic functional block diagram of the device of embodiment of the present invention control heat collector hot spot with reference to figure 5, Fig. 5.
In embodiment three, the device of described control heat collector hot spot comprises:
Start module 501, for starting at least three imageing sensors being arranged on described heat collector surrounding;
Preferably, be that the embodiment of the present invention starts the high-level schematic functional block diagram of module 501 with reference to figure 6, Fig. 6.Described startup module 501 comprises:
First start unit 601, is arranged on described heat collector surrounding two imageing sensors up and down symmetrical centered by described heat collector for starting;
Second start unit 602, is arranged on described heat collector surrounding two, left and right imageing sensor symmetrical centered by described heat collector for starting;
3rd start unit 603, is arranged on described heat collector surrounding upper and lower, four, left and right imageing sensor symmetrical centered by described heat collector for starting;
4th start unit 604, for starting the imageing sensor being arranged on described heat collector surrounding circular distribution symmetrical centered by described heat collector;
5th start unit 605, for starting the imageing sensor being arranged on the preset shape distribution symmetrical centered by described heat collector of described heat collector surrounding.
Concrete, the present invention is described in detail for one of them implementation.With reference to the structure chart that figure 2, Fig. 2 is a kind of tower system that the embodiment of the present invention provides.With reference to the mounting structure figure that figure 3, Fig. 3 is a kind of imageing sensor that the embodiment of the present invention provides.
As shown in Figure 2, vertically symmetrical distribution placement four imageing sensors around heat collector, imageing sensor is towards heliostat field, and heliostat hot spot focus objects position is heat collector center for the sun, heliostat, thermal-arrest tower position relationship.In the control procedure of heliostat, focus on heat collector by open loop control mode by heliostat hot spot, due to the existence of machine error and control deviation, focal beam spot not necessarily projects heat collector center.At this moment can start Closed loop track control mode, adjustment heliostat hot spot is to center and heat collector center superposition.Concrete control method is as follows:
Can surface imaging on four imageing sensors around heat collector while on heliostat dot projection to heat collector, need to assemble filtering apparatus before imageing sensor, hot spot on imageing sensor can not be reached capacity, gamma calibration to be carried out to four imageing sensors simultaneously, make at the gray value of identical illumination condition hypograph sensor output identical.Also will calibrating for the direction of four imageing sensors towards Jing Chang in addition, making focal beam spot when projecting heat collector center, on four imageing sensors, the gray value of imaging is identical.Heliostat picture is in the image sensor a hot spot, the mode of statistics can be adopted to calculate its gray value g and represent.When hot spot departs from heat collector center, on four imageing sensors, the gray value of alleged picture can change.Respectively with g1, g2, g3, g4 represent a certain heliostat when a certain position on four imageing sensors the gray value of imaging.Gray-scale deviation signal g13=g1-g3, can reflect facula position deviation in the horizontal direction, and gray-scale deviation signal g24=g2-g4 can reflect the deviation of facula position at vertical direction.By gray-scale deviation signal feedback to the azimuth axis of heliostat and pitch axis guiding mechanism, heliostat azimuth and the angle of pitch are adjusted.It is as follows that gray-scale deviation signal and heliostat driving shaft adjust relation, heliostat hot spot is described near CCD image sensor 1 when g13 is greater than zero away from CCD3, now need to control one side that heliostat hot spot is shifted to close CCD3 by heliostat azimuth axis in the horizontal direction, otherwise shift near CCD1's.Heliostat hot spot is described near CCD image sensor 2 when g24 is greater than zero away from CCD4, now needs to control that heliostat hot spot vertically shifts near CCD4 by heliostat pitch axis, otherwise shift to the one side near CCD2.Need again to detect gray-scale deviation signal g13 and g24 until gray-scale deviation signal makes it value after each adjustment heliostat, now heliostat hot spot is in the predetermined focus target position of heat collector.
When heliostat field has a large amount of heliostat, every platform heliostat can present respective picture in the image sensor, only need tell heliostat picture separately in the picture, do closed-loop control noted earlier to every platform heliostat, can realize all heliostats in mirror field.When cannot cover all heliostats with a picture group image-position sensor for extensive heliostat field, can increase imageing sensor group number, a picture group image-position sensor is responsible for the heliostat controlling a part of region.
Focus module 502, for focusing on the center of described heat collector by closed loop control method and described imageing sensor by described at least three heliostat hot spots.
Preferably, with reference to figure 7, Fig. 7 be the high-level schematic functional block diagram of embodiment of the present invention focus module 502.Described focus module 502, comprising:
First focusing unit 701, if the gray value on described at least three imageing sensors is identical, then described heliostat hot spot focuses on the center of described heat collector;
Second focusing unit 702, if the gray value on described at least three imageing sensors is not identical, then adjust the position of described heliostat hot spot, the gray value at least three imageing sensors described in making is identical.
Preferably, with reference to figure 8, Fig. 8 be the high-level schematic functional block diagram of embodiment of the present invention focus module 502.Described focus module 502, comprising:
3rd focusing unit 801, if the value preset on described at least three imageing sensors is identical, then described heliostat hot spot focuses on the center of described heat collector;
4th focusing unit 802, if the value preset on described at least three imageing sensors is not identical, then adjusts the position of described heliostat hot spot, and the value preset at least three imageing sensors described in making is identical.
Heliostat hot spot focuses on heat collector by open-loop control method by the embodiment of the present invention; Start at least three imageing sensors being arranged on described heat collector surrounding; By closed loop control method and described imageing sensor, described at least three heliostat hot spots are focused on the center of described heat collector, by the positional information detecting heliostat hot spot, closed-loop control is carried out to heliostat facula position, higher spot location precision can be obtained than opened loop control, reduce the required precision of the frame for movement of heliostat being followed the tracks of to drives structure simultaneously; Improve spot location precision by Closed loop track, can reduce because spot location deviation causes heat collector energy loss, improve collecting efficiency, the stability of heat distribution on heat collector can be improved simultaneously, be conducive to heat collector and control; By placing a picture group image-position sensor thus realize the closed-loop control to a large amount of heliostat around heat collector, with existing compared with sensor installation device above heliostat realizes closed-loop control, the present invention adopts number of sensors less, is easy to reduce costs and reduce installation and debugging workload.
Embodiment four
It is the high-level schematic functional block diagram of the device of embodiment of the present invention control heat collector hot spot with reference to figure 9, Fig. 9.Described device also comprises:
Module 503 being set, for the filtering apparatus by being arranged on before described imageing sensor, making the hot spot of described imageing sensor be in unsaturation state;
Calibration module 504, for calibrating the gray value of described imageing sensor, makes the gray value of described imageing sensor symmetrical under identical illumination condition identical.
Below the know-why of the embodiment of the present invention is described in conjunction with specific embodiments.These describe the principle just in order to explain the embodiment of the present invention, and can not be interpreted as the restriction to embodiment of the present invention protection domain by any way.Based on explanation herein, those skilled in the art does not need to pay other detailed description of the invention that performing creative labour can associate the embodiment of the present invention, these modes all by fall into the embodiment of the present invention protection domain within.
Claims (10)
1. control a method for heat collector hot spot, it is characterized in that, described method comprises:
Start and be arranged at least three imageing sensors of described heat collector surrounding, described at least three imageing sensors respectively with the center of heat collector for the center of circle circumferentially;
By closed loop control method and described imageing sensor, described at least three heliostat hot spots are focused on the center of described heat collector.
2. method according to claim 1, is characterized in that, described startup is arranged at least three imageing sensors of described heat collector surrounding, comprising:
Start and be arranged on described heat collector surrounding two imageing sensors up and down symmetrical centered by described heat collector; Or,
Start and be arranged on described heat collector surrounding two, left and right imageing sensor symmetrical centered by described heat collector; Or,
Start and be arranged on described heat collector surrounding upper and lower, four, left and right imageing sensor symmetrical centered by described heat collector; Or,
Start the imageing sensor being arranged on described heat collector surrounding circular distribution symmetrical centered by described heat collector; Or,
Start the imageing sensor being arranged on the preset shape distribution symmetrical centered by described heat collector of described heat collector surrounding.
3. method according to claim 1, is characterized in that, describedly by closed loop control method and described at least three imageing sensors, described heliostat hot spot is focused on the center of described heat collector, comprising:
If the gray value on described at least three imageing sensors is identical, then described heliostat hot spot focuses on the center of described heat collector;
If the gray value on described at least three imageing sensors is not identical, then adjust the position of described heliostat hot spot, the gray value at least three imageing sensors described in making is identical.
4. method according to claim 1, is characterized in that, describedly by closed loop control method and described at least three imageing sensors, described heliostat hot spot is focused on the center of described heat collector, comprising:
If the value preset on described at least three imageing sensors is identical, then described heliostat hot spot focuses on the center of described heat collector;
If the value preset on described at least three imageing sensors is not identical, then adjust the position of described heliostat hot spot, the value preset at least three imageing sensors described in making is identical.
5. the method according to Claims 1-4 any one, is characterized in that, described by closed loop control method and described at least three imageing sensors described heliostat hot spot focused on the center of described heat collector before, also comprise:
By being arranged on the filtering apparatus before described imageing sensor, the hot spot of described imageing sensor is made to be in unsaturation state;
The gray value of described imageing sensor is calibrated, makes the gray value of described imageing sensor symmetrical under identical illumination condition identical.
6. control a device for heat collector hot spot, it is characterized in that, described device comprises:
Start module, for starting at least three imageing sensors being arranged on described heat collector surrounding;
Focus module, for focusing on the center of described heat collector by closed loop control method and described imageing sensor by described at least three heliostat hot spots.
7. device according to claim 6, is characterized in that, described startup module comprises:
First start unit, is arranged on described heat collector surrounding two imageing sensors up and down symmetrical centered by described heat collector for starting;
Second start unit, is arranged on described heat collector surrounding two, left and right imageing sensor symmetrical centered by described heat collector for starting;
3rd start unit, is arranged on described heat collector surrounding upper and lower, four, left and right imageing sensor symmetrical centered by described heat collector for starting;
4th start unit, for starting the imageing sensor being arranged on described heat collector surrounding circular distribution symmetrical centered by described heat collector;
5th start unit, for starting the imageing sensor being arranged on the preset shape distribution symmetrical centered by described heat collector of described heat collector surrounding.
8. device according to claim 6, is characterized in that, described focus module, comprising:
First focusing unit, if the gray value on described at least three imageing sensors is identical, then described heliostat hot spot focuses on the center of described heat collector;
Second focusing unit, if the gray value on described at least three imageing sensors is not identical, then adjust the position of described heliostat hot spot, the gray value at least three imageing sensors described in making is identical.
9. device according to claim 6, is characterized in that, described focus module, comprising:
3rd focusing unit, if the value preset on described at least three imageing sensors is identical, then described heliostat hot spot focuses on the center of described heat collector;
4th focusing unit, if the value preset on described at least three imageing sensors is not identical, then adjusts the position of described heliostat hot spot, and the value preset at least three imageing sensors described in making is identical.
10. the device according to claim 6 to 9 any one, is characterized in that, described device also comprises:
Module being set, for the filtering apparatus by being arranged on before described imageing sensor, making the hot spot of described imageing sensor be in unsaturation state;
Calibration module, for calibrating the gray value of described imageing sensor, makes the gray value of described imageing sensor symmetrical under identical illumination condition identical.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510586846.2A CN105202785B (en) | 2015-09-15 | 2015-09-15 | A kind of method and device for controlling heat collector hot spot |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510586846.2A CN105202785B (en) | 2015-09-15 | 2015-09-15 | A kind of method and device for controlling heat collector hot spot |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105202785A true CN105202785A (en) | 2015-12-30 |
| CN105202785B CN105202785B (en) | 2018-03-30 |
Family
ID=54950605
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510586846.2A Active CN105202785B (en) | 2015-09-15 | 2015-09-15 | A kind of method and device for controlling heat collector hot spot |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105202785B (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201983486U (en) * | 2011-02-18 | 2011-09-21 | 南京科远自动化集团股份有限公司 | Tower type heliostat tracking and controlling device of solar heat generating station |
| CN102354225A (en) * | 2011-09-29 | 2012-02-15 | 深圳市联讯创新工场科技开发有限公司 | Calibration system and calibration method for heliostat of solar generating station |
| CN102506810A (en) * | 2011-10-18 | 2012-06-20 | 邵文远 | Heliostat angle deviation detection method for tower type solar thermal power generation system |
| US20120327219A1 (en) * | 2009-09-17 | 2012-12-27 | Gal Villaret | Solar tracker device and system |
| CN103644665A (en) * | 2013-12-23 | 2014-03-19 | 中国科学院电工研究所 | Tracking and controlling system and tracking method for heliostat |
-
2015
- 2015-09-15 CN CN201510586846.2A patent/CN105202785B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20120327219A1 (en) * | 2009-09-17 | 2012-12-27 | Gal Villaret | Solar tracker device and system |
| CN201983486U (en) * | 2011-02-18 | 2011-09-21 | 南京科远自动化集团股份有限公司 | Tower type heliostat tracking and controlling device of solar heat generating station |
| CN102354225A (en) * | 2011-09-29 | 2012-02-15 | 深圳市联讯创新工场科技开发有限公司 | Calibration system and calibration method for heliostat of solar generating station |
| CN102506810A (en) * | 2011-10-18 | 2012-06-20 | 邵文远 | Heliostat angle deviation detection method for tower type solar thermal power generation system |
| CN103644665A (en) * | 2013-12-23 | 2014-03-19 | 中国科学院电工研究所 | Tracking and controlling system and tracking method for heliostat |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105202785B (en) | 2018-03-30 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102495640B (en) | Heliostat calibration method and system for solar power station | |
| CN201983486U (en) | Tower type heliostat tracking and controlling device of solar heat generating station | |
| CN102506810B (en) | Heliostat angle deviation detection method for tower type solar thermal power generation system | |
| CN102506811B (en) | Image detection-based on-line detection and correction method of reflection angle of heliostat | |
| CN102549350B (en) | Calibration system for solar collector installation | |
| CN102354225B (en) | Calibration system and calibration method for heliostat of solar generating station | |
| CN201918930U (en) | Concentrated photovoltaic automatic solar tracking power generating device capable of realizing point tracking at highest power | |
| CN102354227B (en) | Heliostat calibration system of solar power station and calibration method | |
| CN102175066B (en) | Heliostat tracking control device for tower-type solar thermal power station | |
| CN102980313A (en) | Heliostat error correction system and method for solar tower optical-thermal power station | |
| CN103345261B (en) | Heliostat flare deviation correction method | |
| CN101859150A (en) | Sun tracking and aligning device and method for Stirling solar electric generating system | |
| CN102354226B (en) | Heliostat calibration system of solar power station and calibration method | |
| CN105387999A (en) | Method for testing optical efficiency of slot type solar thermal collector | |
| CN102749933A (en) | Sun-tracking method and system for disc solar-thermal power generating system | |
| CN103019220B (en) | For the heliostat zone control system of tower type solar thermo-power station | |
| CN104699116A (en) | Heliostat tracking error correction method | |
| CN109857154B (en) | Method and device for tracking sun by reflector in Fresnel photo-thermal power generation system | |
| CN111833212B (en) | Operation and maintenance management system and method for solar photovoltaic power station | |
| CN110030741A (en) | The bearing calibration of secondary reflection mirror in a kind of tower type solar secondary reflection system | |
| CN205193600U (en) | Three -point fix solar energy automatic tracking apparatus and control system thereof | |
| CN105202785A (en) | Method and device for controlling light spot of heat collector | |
| CN105135717A (en) | Method and device for controlling light spots of heat collector | |
| CN204830520U (en) | High warm electricity generation thermal -arrest control system of group's control solar energy | |
| CN105509346A (en) | Offset correction system and correction method for tower-type heliostat |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |