CN103034244A - Heliostat high-precision project facula method and device - Google Patents
Heliostat high-precision project facula method and device Download PDFInfo
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- CN103034244A CN103034244A CN2012104783073A CN201210478307A CN103034244A CN 103034244 A CN103034244 A CN 103034244A CN 2012104783073 A CN2012104783073 A CN 2012104783073A CN 201210478307 A CN201210478307 A CN 201210478307A CN 103034244 A CN103034244 A CN 103034244A
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- heliostat
- heat collector
- solar
- minute surface
- central point
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Abstract
The invention relates to a heliostat high-precision project facula method and device. The method including the following steps: firstly, taking the central of a mirror plane of the heliostat as the origin of a coordinate, to build the three dimensional space coordinate system and the due north direction is a datum point of the heliostat tracking project solar facula, secondly, a collector is set to receiving the solar facula the heliostat projected, thirdly, selecting high-precision measuring apparatus to measure the geographical location coordinate of the heliostat relative to the collector in the three dimensional space and the vertical distance between the central point of the collector and the mirror plane of the heliostat; fourthly, selecting a high-precision the sun position positioning system to acquire the solar altitude and the solar azimuth, fifthly, substituting the heliostat geographical location coordinate (x,y), the vertical distance h between the central point of the collector the central point of mirror plane of the heliostat, the solar altitude HS and the solar azimuth AS into the heliostat high-precision project solar facula algorithm, thereby accurately operating the solar altitude and the solar azimuth of the heliostat by an upper computer controlling system.
Description
Technical field
The present invention relates to tower type solar collecting system technology, particularly a kind of technology and device of heliostat high precision dot projection.
Background technology
Take the running track from sun mathematical model as the basis, provide arbitrary position heliostat period inner height angle in office and position angle Temporal-Spatial Variables inventory by computer control system, and correlation parameter reached the heliostat gear train, make it accurately drive heliostat and arrive the precalculated position, be guarantee any time arbitrary heliostat tracking solar and projected spot to the key of heat collector assigned address.
Institute's heliostat of building is followed the tracks of projected spot control model in the prior art still larger room for improvement, thereby further improves effective control of heliostat elevation angle and position angle Temporal-Spatial Variables, so that hot spot can be beaten more accurately in the heat collector specified location.
Summary of the invention
In order to solve above-mentioned technological deficiency, the present invention proposes a kind of method and apparatus of heliostat high precision projected spot.
The present invention realizes according to following technical proposals:
A kind of method of heliostat high precision projected spot may further comprise the steps:
(1) take heliostat minute surface center as true origin, sets up three-dimensional coordinate system, and follow the tracks of the reference point of projection solar facula take direct north as heliostat;
(2) set a heat collector and be used for accepting the solar facula that heliostat throws;
(3) choose the high precision fine measuring instrument record the relative heat collector of heliostat in three dimensions geographical position coordinates of living in and heat collector central point apart from the vertical range of heliostat minute surface central point;
(4) choose a kind of high-precision sun location positioning system for the elevation angle and the position angle that obtain the sun;
(5) with heliostat geographical position coordinates (x described above, y), the heat collector central point in the elevation angle HS of the vertical range h of heliostat minute surface central point and the sun, position angle AS substitution heliostat high precision projection solar facula algorithm, accurately calculate heliostat elevation angle and position angle through upper computer control system;
Heliostat elevation angle and the azimuthal computing formula of any time under the specific geographic coordinate system are as follows:
Coordinate (x, y) in the formula is the coordinate of the relative heat collector of heliostat present position; H represents that the heat collector central point is apart from the vertical range of heliostat; HN represents heliostat minute surface centre-height angle; FN represents heliostat minute surface central party parallactic angle.
A kind of device of heliostat high precision projected spot, comprise supervisory controller, slave computer controller, microprocessor, servomotor, heliostat supporting mechanism and heliostat minute surface, it is characterized in that supervisory controller gives an order to the slave computer controller, the slave computer controller sends to microprocessor after the command interpretation that receives is become the corresponding time sequence signal, and the control servomotor was carried out instruction after microprocessor obtained instruction; Servomotor accurately drives the running of heliostat supporting mechanism immediately fast according to instruction; When the heliostat supporting mechanism reaches certain position, can be so that heliostat mirror focusing and throw the specified point position of solar facula to the heat collector.
The built-in software for calculation of described upper and lower machine controller and program;
Described servomotor is comprised of motor and driver;
Described heliostat supporting mechanism is comprised of horizontal drive shaft and vertical transmission shaft;
To be tool be comprised of the eyeglass of certain reflectivity described heliostat minute surface;
The vertical transmission shaft slewing area of heliostat in the described system is 0～90 °, and the horizontal drive shaft scope is 0～360 °.
Two groups of functions are easy to realize in the mathematical model, also are that described mathematical model realizes that the heliostat high precision focuses on the projected spot system and beats in the specified point position that is positioned at the heat collector on the thermal-arrest tower; Described specified point position is not only heat collector center of mass point place;
Based on the designed heliostat system of mathematical model, be convenient to the application in the tower collecting system of reality.In this system, supervisory controller input year, month, day and elevation, and then output HS and AS input x, y and h, output HN and AN; The slave computer controller is accepted HN and AN, the umber of pulse of output HN and AN;
The present invention has improved heliostat and has followed the tracks of the projection precision;
The present invention can be positioned at the different position of heat collector so that focus on the hot spot of projection.
Description of drawings
Figure 120 heliostat on October 21st, 12 is positioned at (20,30,80) and locates the elevation angle change curve; Expression is in conjunction with example x=20, y=30, h=80 heliostat minute surface centre-height angle change curve;
Figure 22 heliostat on October 21st, 012 is in (10,20,80) azimuthal change curve; Expression is in conjunction with example x=20, y=30, h=80 heliostat minute surface central party parallactic angle change curve;
Fig. 3 is heliostat high precision projected spot system schematic of the present invention.Among the figure: the 1-supervisory controller; 2-slave computer controller; 3-heliostat microprocessor; The 4-servomotor; 5-heliostat minute surface; 6-thermal-arrest tower; The 7-heat collector; The 8-light source.
Embodiment
As shown in Figure 3: a kind of heliostat high precision focuses on the projected spot system, comprise mathematical model and heliostat system, in this system, in supervisory controller (1), input in advance local longitude and latitude and sea level elevation and date on the same day, the software of writing by supervisory controller (1), operation output sun sunrise elevation angle and position angle constantly, further input heliostat present position coordinate is appointed right in supervisory controller (1) output heliostat minute surface centre-height angle and position angle, the information of output is sent to slave computer controller (2), be sent to heliostat microprocessor (3) after being construed to the corresponding time sequence signal after slave computer controller (2) the reception information, heliostat microprocessor (3) is controlled servomotor (4) execution instruction after obtaining instruction, servomotor (4) according to order-driven heliostat supporting mechanism accurately turn round fast to heliostat at sunrise constantly corresponding heliostat minute surface centre-height angle and position angle, when light source (8) arrives sunrise constantly, the settled date minute surface begins to focus on and the specified point position of reflected solar radiation amount to the thermal-arrest tower (6), in the process of light source (8) motion, send order-driven heliostat focusing projected spot by this system interior until light source (8) sunset to thermal-arrest tower (6), when light source (8) post sunset, stop to playback to heliostat transmission driving instruction and with heliostat; The thermal-arrest tower is used for supporting heat collector.
The present invention verifies in conjunction with example, and wherein, the coordinate value is respectively x=20, y=30, and find to satisfy the demands in h=80 and elevation angle and the position angle of getting the sun on the 21st October in 2012; Above-mentioned coordinate unit is rice.
| Time | The heliostat elevation angle | The heliostat position angle |
| 8:10:0 | 39.067666 | 122.502479 |
| 9:10:0 | 43.693067 | 130.562718 |
| 10:10:0 | 47.787514 | 139.754322 |
| 11:10:0 | 51.146910 | 150.256084 |
| 12:10:0 | 53.548730 | 162.070486 |
| 13:10:0 | 54.787525 | 174.893288 |
| 14:10:0 | 54.740185 | 188.088904 |
| 15:10:0 | 53.420132 | 200.886584 |
| 16:10:0 | 50.975050 | 212.692412 |
| 17:10:0 | 47.636237 | 223.264613 |
The curve of drawing as shown in Figures 1 and 2.
Claims (4)
1. the method for a heliostat high precision projected spot may further comprise the steps:
(1) take heliostat minute surface center as true origin, sets up three-dimensional coordinate system, and follow the tracks of the reference point of projection solar facula take direct north as heliostat;
(2) set a heat collector and be used for accepting the solar facula that heliostat throws;
(3) choose the high precision fine measuring instrument record the relative heat collector of heliostat in three dimensions geographical position coordinates of living in and heat collector central point apart from the vertical range of heliostat minute surface central point;
(4) choose a kind of high-precision sun location positioning system for the elevation angle and the position angle that obtain the sun;
(5) with heliostat geographical position coordinates (x described above, y), the heat collector central point in the elevation angle HS of the vertical range h of heliostat minute surface central point and the sun, position angle AS substitution heliostat high precision projection solar facula algorithm, accurately calculate heliostat elevation angle and position angle through upper computer control system.
2. the method for claim 1 is characterized in that, heliostat elevation angle and the azimuthal computing formula of any time under the specific geographic coordinate system are as follows:
Coordinate (x, y) in the formula is the coordinate of the relative heat collector of heliostat present position; H represents that the heat collector central point is apart from the vertical range of heliostat; HN represents heliostat minute surface centre-height angle; FN represents heliostat minute surface central party parallactic angle.
3. the device of a heliostat high precision projected spot, comprise supervisory controller, slave computer controller, microprocessor, servomotor, heliostat supporting mechanism and heliostat minute surface, it is characterized in that supervisory controller gives an order to the slave computer controller, the slave computer controller sends to microprocessor after the command interpretation that receives is become the corresponding time sequence signal, and the control servomotor was carried out instruction after microprocessor obtained instruction; Servomotor accurately drives the running of heliostat supporting mechanism immediately fast according to instruction; When the heliostat supporting mechanism reaches certain position, can be so that heliostat mirror focusing and throw the specified point position of solar facula to the heat collector.
4. must install as claimed in claim 3, it is characterized in that:
1) the built-in software for calculation of upper and lower machine controller and program;
2) servomotor is comprised of motor and driver;
3) the heliostat supporting mechanism is comprised of horizontal drive shaft and vertical transmission shaft;
4) to be tool be comprised of the eyeglass of certain reflectivity the heliostat minute surface;
5) the vertical transmission shaft slewing area of the heliostat in the described system is 0～90 °, and the horizontal drive shaft scope is 0～360 °.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2012104783073A CN103034244A (en) | 2012-11-22 | 2012-11-22 | Heliostat high-precision project facula method and device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2012104783073A CN103034244A (en) | 2012-11-22 | 2012-11-22 | Heliostat high-precision project facula method and device |
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| CN103034244A true CN103034244A (en) | 2013-04-10 |
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| CN2012104783073A Pending CN103034244A (en) | 2012-11-22 | 2012-11-22 | Heliostat high-precision project facula method and device |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106444860A (en) * | 2016-11-11 | 2017-02-22 | 中国电力工程顾问集团西北电力设计院有限公司 | Solar photo-thermal power generation heliostat angle calculation and control method |
| WO2018096301A1 (en) | 2016-11-28 | 2018-05-31 | Commissariat A L'energie Atomique Et Aux Energies Alternatives | Concentrated solar plant |
Citations (5)
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| CN201242301Y (en) * | 2008-06-23 | 2009-05-20 | 中国华电工程(集团)有限公司 | Control device for heliostat to automatic trace sun track for tower type solar thermal electrification |
| CN201397476Y (en) * | 2009-04-08 | 2010-02-03 | 皇明太阳能集团有限公司 | Automatic control system of heliostat |
| WO2011001448A2 (en) * | 2009-07-01 | 2011-01-06 | Ravindra Patwardhan | A solar central receiver system employing common positioning mechanism for heliostats |
| CN102242980A (en) * | 2011-07-14 | 2011-11-16 | 南京科远自动化集团股份有限公司 | Heliostat tracking control device and tracking control method thereof |
| CN102508498A (en) * | 2011-12-28 | 2012-06-20 | 浙江中控太阳能技术有限公司 | Method for quickly positioning solar faculae |
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2012
- 2012-11-22 CN CN2012104783073A patent/CN103034244A/en active Pending
Patent Citations (5)
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| CN201242301Y (en) * | 2008-06-23 | 2009-05-20 | 中国华电工程(集团)有限公司 | Control device for heliostat to automatic trace sun track for tower type solar thermal electrification |
| CN201397476Y (en) * | 2009-04-08 | 2010-02-03 | 皇明太阳能集团有限公司 | Automatic control system of heliostat |
| WO2011001448A2 (en) * | 2009-07-01 | 2011-01-06 | Ravindra Patwardhan | A solar central receiver system employing common positioning mechanism for heliostats |
| CN102242980A (en) * | 2011-07-14 | 2011-11-16 | 南京科远自动化集团股份有限公司 | Heliostat tracking control device and tracking control method thereof |
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| 郭铁铮等: "塔式太阳能热发电站中的定日镜跟踪装置研制", 《中国电机工程学报》 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106444860A (en) * | 2016-11-11 | 2017-02-22 | 中国电力工程顾问集团西北电力设计院有限公司 | Solar photo-thermal power generation heliostat angle calculation and control method |
| CN106444860B (en) * | 2016-11-11 | 2019-12-13 | 中国电力工程顾问集团西北电力设计院有限公司 | Method for calculating and controlling angle of heliostat in solar photo-thermal power generation |
| WO2018096301A1 (en) | 2016-11-28 | 2018-05-31 | Commissariat A L'energie Atomique Et Aux Energies Alternatives | Concentrated solar plant |
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Application publication date: 20130410 |