CN101398301A - Sun tracking precision measurement mechanism for double freedom degree tracking photovoltaic power generation system - Google Patents
Sun tracking precision measurement mechanism for double freedom degree tracking photovoltaic power generation system Download PDFInfo
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- CN101398301A CN101398301A CN 200710176878 CN200710176878A CN101398301A CN 101398301 A CN101398301 A CN 101398301A CN 200710176878 CN200710176878 CN 200710176878 CN 200710176878 A CN200710176878 A CN 200710176878A CN 101398301 A CN101398301 A CN 101398301A
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Abstract
The invention discloses a sun-tracking precision measuring equipment of a photovoltaic electricity generating system with double tracking freedom degrees, which comprises a light guide head (4), an upper flange (3), a barrel body (2), a lower flange (1), a target sheet, a synthetic glass view port (5) and a light hood (7). The parts are orderly connected in an order of the light guide head (4), the upper flange (3), the barrel body (2), the lower flange (1), the target sheet, the synthetic glass view port (5) and the light hood (7) from up to down, the light hood (7) is pasted and connected on the lower installation surface of the lower flange (1), and the parts are closely connected without light transmission points. The light guide head (4) is opened with a round light guide orifice, the centers of the upper flange (3) and the lower flange (1) are respectively opened with a through hole, the target sheet is arranged on an upper surface of the synthetic glass view port (5) and takes semitransparent parchment paper, and concentric polar coordinate rings are printed on the target sheet and represent different measuring precisions. The sun-tracking precision measuring equipment is arranged on the photovoltaic electricity generating system with double tracking freedom degrees, and can directly read the sun-tracking precision according to faculae that are projected onto the target sheet.
Description
Technical field
The present invention relates to the sun tracking precision measurement device of double freedom tracking photovoltaic generating system.
Background technology
The double freedom tracking photovoltaic generating system is efficiently to utilize solar cell at present, use one of important means of solar energy generating, the precision height of the double freedom tracking photovoltaic generating system tracking sun directly has influence on the generated energy of solar cell, it simultaneously also is the important technology parameter of reflection double freedom tracking photovoltaic generating system performance quality, follow the tracks of sun precision so in time record, can make correct judgement to double freedom tracking photovoltaic generating system entire system ruuning situation, in time system is safeguarded, protect just its dependable performance.The tracking sun precision real-time detection apparatus of double freedom tracking photovoltaic generating system has following several mode at present:
1. take to use the sensor of four-quadrant photosensitive device making, this sensor adopts four groups of photosensitive devices to line up pyramid, under the irradiation of forward light, demarcate and respectively organize photosensitive device voltage or current value equates, when sunlight forward illumination sensor, four groups of photosensitive device voltage thermoelectricity streams equate, four groups of photosensitive devices produced voltage difference when sunlight departed from the forward irradiation, and the machine computing draws misalignment angle as calculated.But this sensor environment bad adaptability needs periodic calibrating, frequent cleans, and be not suitable for the sun tracking precision measurement of double freedom tracking photovoltaic generating system.The a large amount of Desert Area of using in the luminous energy abundance of double freedom tracking photovoltaic generating system, physical environment is abominable, and the sensor that the four-quadrant photosensitive device is made very easily is subjected to surface contamination, thereby causes the measuring accuracy misalignment.And cost is higher.
2. sun sensor is an instrument of measuring position of sun, for the attitude adjustment of artificial satellite provides data, as: Chinese patent 200510063341.4 " minitype digital sun sensor ", 01140443.4 " optical nonlinearity compensated analog formula diaxon sun sensor design method and sensor ", 200610103797.3 " high-precision APS solar sensors " etc., can be used in to detect on the double freedom tracking photovoltaic generating system and follow the tracks of sun precision, but this quasi-instrument costs an arm and a leg, running environment requires high, is not suitable for using in Desert Area.
3. the sunlight collimator can be measured the tracking accuracy of double freedom tracking photovoltaic generating system, installs and inconvenience but use, and needs often to safeguard, therefore also is not suitable for the sun tracking precision measurement of double freedom tracking photovoltaic generating system.
4. also has a kind of very easy method, straight-bar perpendicular to the solar panel face is installed on the solar panel face on the double freedom tracking photovoltaic generating system, sun shadow according to straight-bar calculates tracking sun precision, the method can adopt temporarily, very inconvenient, especially the double freedom tracking photovoltaic generating system is very big, measure to follow the tracks of measurements of need climbing of sun precision with the method, and is very inconvenient.
Summary of the invention
The objective of the invention is to overcome prior art cost height, measure the shortcoming of inconvenience, propose a kind of sun tracking precision measurement device of double freedom tracking photovoltaic generating system.The present invention makes and safeguards simply, with low cost, easy to operate, and it is convenient to measure, and the tracking sun precision that can in time read the double freedom tracking photovoltaic generating system, measuring accuracy reach ± and 1 °.
The present invention by leaded light head, upper flange, ladle body, issue parts such as orchid, target sheet, organic glass form and light shield and form.It is conical that leaded light head profile is, and leaded light head conical lower section is assemblied in the last installed surface of upper flange.The upper flange center has a through hole.The following installed surface of upper flange cooperates with installed surface on the ladle body, under the ladle body installed surface with issue the blue installed surface of going up and cooperate.Issue blue center and have a through hole, the installed surface direction has a concave station to be used to install organic glass vision panel under the through hole.Leaded light head, upper flange, issue orchid, ladle body and cooperate closely no diaphanous spot.Leaded light head, upper flange, issue between orchid, ladle body, the organic glass form and use screw attachment, constitute main body of the present invention.Target sheet is installed in the upper surface of organic glass form, and target sheet adopts translucent template, is printed on the concentric polar coordinates annulus of expression different measuring precision on the target sheet.Light shield is bonded in and issues on the blue following installed surface.One leaded light circular hole is arranged on the leaded light head, sunshine is injected by leaded light head aperture, through upper flange central through hole and lower flange central through hole, project and form hot spot on the target sheet, can see the polar coordinates position of hot spot on target sheet by the organic glass form, directly read the double freedom tracking photovoltaic generating system and follow the tracks of sun precision.
Description of drawings
Fig. 1 a is an overall diagram of the present invention, and Fig. 1 b is a leaded light head partial enlarged drawing of the present invention, and Fig. 1 c is a hot spot place partial enlarged drawing;
Among the figure: 1 lower flange, 2 ladle bodies, 3 upper flanges, 4 leaded light heads, above-mentioned parts all adopt the aluminium alloy manufacturing, 5 organic glass forms, 6 incident sunshines, 7 light shields, 8 install the adjustment bolt;
Fig. 2 is target sheet figure.
Embodiment
Further describe the present invention below in conjunction with the drawings and specific embodiments.
The present invention by leaded light head 4, upper flange 3, ladle body 2, issue parts such as blue 1, target sheet, organic glass form 5 and light shield 7 and form.As shown in Figure 1a, the conical lower section of leaded light head 4 is installed on the last installed surface of upper flange 3, uses screw attachment.Leaded light head 4 adopts the aluminium alloy manufacturing, and φ 1.5～2mm light-conductive hole is arranged on the leaded light head 4.Fig. 1 b is the light-conductive hole amplification stereogram, light-conductive hole adopts 30 ° of taper holes, guarantee that sunlight is noiseless with ± 10 ° angular range incident, leaded light head 4 profiles are conical, leaded light head 4 can be by the assemblage gap between the solar panel when purpose was mounted in the double freedom tracking photovoltaic generating system, make light-conductive hole on the leaded light head 4 protrude the solar panel surface adopt sunshine.Upper flange 3 centers have a through hole.Being evenly equipped with threaded hole on the upper flange 3 is used for connecting with ladle body 2.Ladle body 2 adopts the aluminium alloy plate manufacturing, and each uniform connection holes of outer is used for connecting upper flange 3 and lower flange 1 up and down.Lower flange 1 adopts the aluminium alloy manufacturing, is evenly equipped with 16 in M4 rib-loop hole and is used for connecting with ladle body 2.Lower flange 1 center has circular hole, be processed with cubic concave station below the lower flange 1, uniform rib-loop hole in the concave station, adopt screw retention organic glass form 5, organic glass form 5 adopts poly (methyl methacrylate) plate processing, the center is porose, and 8 of the mounting holes of uniform all around φ 5mm clamp target sheet in the middle of lower flange 1 and the organic glass form 5.Target sheet is translucent template.As shown in Figure 2, print the concentric polar coordinates annulus that expression different measuring precision is arranged on the target sheet.Apparatus of the present invention foot is a light shield 7, light shield 7 adopts light composite material to make, be bonded on the following installed surface of lower flange 1, be used for blocking diffuse reflection sunlight on every side, for watching the hot spot on the target sheet that a half-light environment is provided through the organic glass form is clear from following.Four of 3 four jiaos of uniform installations of upper flange are installed and are adjusted bolt, and apparatus of the present invention are installed on the double freedom tracking photovoltaic generating system, can adjust setting angle.Apparatus of the present invention are from top to bottom by leaded light head 4, and---upper flange 3---------target sheet---organic glass form 5---assembles with screw attachment ladle body 2 successively to issue blue 1 by the order of light shield 7, except that target sheet and organic glass form 5, leaded light head 4, upper flange 3, ladle body 2 and issue the equal spray black extinction of blue 1 inside surface coating, making that apparatus of the present invention are inner does not have a reflected light that hot spot is observed in influence.
The course of work of the present invention is as follows:
Shown in Fig. 1 a, the present invention utilizes the principle of light along rectilinear propagation, sunshine incident light 6 is injected from leaded light head 4 light-conductive holes, central through hole through upper flange 3 central through holes and lower flange 1, project on the semi-transparent target sheet of installing on the bottom of device organic glass form 5, form bright hot spot, can draw the system keeps track deviation by the position of hot spot on target sheet.Light-conductive hole and target sheet vertical range 573mm.Fig. 2 is target sheet figure, each donut performance misalignment angle.The cross curve direction that can relatively deviate.Fig. 2 target sheet Internal and external cycle radius is followed successively by 5mm, 10mm, 15mm, 20.01mm, 25.02mm, 30.03mm, 35.04mm, 40.06mm, 45.09mm totally 9 concentric rings, be hot spot different tracking sun precision of representative in the different concentric ring on target sheet, each circle represents respectively ± 0.5 °, ± 1.0 °, ± 1.5 °, ± 2.0 °, ± 2.5 °, ± 3.0 °, ± 3.5 °, ± 4.0 °, ± 4.5 °.Because the light-conductive hole φ 2mm on the leaded light head 4, the hot spot that projects on the target sheet is about φ 3mm, can produce error maximum ± 0.3 ° during reading, be ± 0.5 ° though the present invention measures minimum division value, because the error existence, so measuring accuracy is ± 1.0 °.The present invention need correctly be installed on the double freedom tracking photovoltaic generating system, survey crew is below the double freedom tracking photovoltaic generating system, directly read the double freedom tracking photovoltaic generating system by the facula position on the target sheet on the organic glass form 5 in the light shield 7 and follow the tracks of sun precision, convenient directly perceived.Influenced by extraneous high light for ease of reading, 7 light shields are equipped with in the device bottom.Adjustable bolt 8 connects in tracker on the upper flange 3, is to adjust adjustable bolt 8 to guarantee hot spot in the annulus of 0.5 ° of Fig. 2 target sheet in the normal operation of tracker, and installation of the present invention just can be observed the tracker running precision.
Installation method of the present invention has two kinds:
1, adjusts the double freedom tracking photovoltaic generating system, make the solar panel of installing in the system be in horizontality, mounting hole on 3 connects with adjustable bolt with tracker, adjust adjustable bolt, allow aperture axis normal on 4,5, the way that available cord is hung plummet by two holes is adjusted adjustable bolt and is made cord center, hole on 5, represents that the vertical cell panel of two axially bored lines can normally use.
2, under the normal state of following the tracks of of tracker, adjust adjustable bolt, make hot spot be in target center and get final product, the method can be measured running precision, is in the precision tolerance band all the time as hot spot in the system keeps track process, and then system is normal, otherwise the illustrative system operation is overproof.
Sun incident light 6 is injected in the measuring instrument by the aperture on the leaded light head 4,31 flanges and ladle body 2 connections are airtight lighttight integral body about the measuring instrument, inner coating black light absorbent, ray cast is on the target sheet of installing on the organic glass form 5, form hot spot, read tracking accuracy by the position of hot spot on target sheet.
The present invention is installed on the double freedom tracking photovoltaic generating system on probation, respond well, and promotional value is arranged.
Claims (3)
1, a kind of sun tracking precision measurement device of double freedom tracking photovoltaic generating system, it is characterized in that comprising leaded light head (4), upper flange (3), ladle body (2), issue orchid (1), target sheet, organic glass form (5) and light shield (7), above-mentioned each parts are from top to bottom by leaded light head 4, and------------order of target sheet---organic glass form 5---light shield 7 adopts screw attachment to ladle body 2 to upper flange 3 successively to issue blue 1, light shield (7) is bonded on the following installed surface that issues orchid (1), leaded light head (4), upper flange (3), ladle body (2), issue orchid (1), target sheet, connect closely no diaphanous spot between organic glass form (5) and the light shield (7); One leaded light circular hole is arranged on the leaded light head (4); Upper flange (3) center has a through hole; Issue orchid (1) center one through hole is arranged; Target sheet is installed in the upper surface of organic glass form (5), and target sheet is translucent template, is printed on the concentric polar coordinates annulus of expression different measuring precision on it.
2, the sun tracking precision measurement device of double freedom tracking photovoltaic generating system according to claim 1, it is characterized in that leaded light head (4) bottom is assemblied in the last installed surface of upper flange (3), the following installed surface of upper flange (3) cooperates with the last installed surface of ladle body (2), the following installed surface of ladle body (2) cooperates with the last installed surface that issues orchid (1), issues that the installed surface direction has a concave station to be used to install organic glass vision panel (5) under orchid (1) central through hole; Leaded light head (4), upper flange (3), ladle body (2) and issue the equal spray black extinction of orchid (1) inside surface coating.
3, the sun tracking precision measurement device of double freedom tracking photovoltaic generating system according to claim 1 is characterized in that leaded light head (4) profile is conical, and the leaded light circular hole on the leaded light head (4) is 30 ° of taper holes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200710176878 CN101398301B (en) | 2007-11-06 | 2007-11-06 | Sun tracking precision measurement mechanism for double freedom degree tracking photovoltaic power generation system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200710176878 CN101398301B (en) | 2007-11-06 | 2007-11-06 | Sun tracking precision measurement mechanism for double freedom degree tracking photovoltaic power generation system |
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| CN101398301A true CN101398301A (en) | 2009-04-01 |
| CN101398301B CN101398301B (en) | 2010-04-14 |
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| CN 200710176878 Expired - Fee Related CN101398301B (en) | 2007-11-06 | 2007-11-06 | Sun tracking precision measurement mechanism for double freedom degree tracking photovoltaic power generation system |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2011154872A1 (en) | 2010-06-08 | 2011-12-15 | Donato Vincenzi | Opto-electronic system for radiometric measurements |
| CN102735209A (en) * | 2012-06-18 | 2012-10-17 | 中国电力科学研究院 | Process for measuring tracking precision of photovoltaic tracking system based on vector decomposition method |
| CN102818509A (en) * | 2012-08-09 | 2012-12-12 | 嘉兴优太太阳能有限公司 | High-precision square annular measuring device for accuracy degree of photovoltaic tracking system |
| CN102818508A (en) * | 2012-08-09 | 2012-12-12 | 嘉兴优太太阳能有限公司 | Free-angle spiral measuring device for accuracy degree of photovoltaic tracking system |
| CN102829702A (en) * | 2012-08-09 | 2012-12-19 | 嘉兴优太太阳能有限公司 | Ring type measurement device for accuracy of photovoltaic tracking system |
| CN106200694A (en) * | 2016-08-26 | 2016-12-07 | 中航动力股份有限公司 | A kind of dot matrix facula position feedback device and method |
| CN109375652A (en) * | 2018-11-05 | 2019-02-22 | 中国电力科学研究院有限公司 | A kind of Flat type photovoltaic tracking system tracking accuracy tester and test method |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2205525Y (en) * | 1994-02-25 | 1995-08-16 | 北京有色金属研究总院 | Automatic tracing device for solar energy collector |
| WO2000071942A1 (en) * | 1999-05-19 | 2000-11-30 | Yaoming Zhang | Solar tracing sensor and application thereof in solar auto-tracing device |
| CN2672938Y (en) * | 2003-12-29 | 2005-01-19 | 中国科学院电工研究所 | Independently operating solar energy photovoltaic power station controller |
| CN100416176C (en) * | 2005-06-09 | 2008-09-03 | 王成伟 | Sunshine tracing system |
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2007
- 2007-11-06 CN CN 200710176878 patent/CN101398301B/en not_active Expired - Fee Related
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2011154872A1 (en) | 2010-06-08 | 2011-12-15 | Donato Vincenzi | Opto-electronic system for radiometric measurements |
| CN102735209A (en) * | 2012-06-18 | 2012-10-17 | 中国电力科学研究院 | Process for measuring tracking precision of photovoltaic tracking system based on vector decomposition method |
| CN102735209B (en) * | 2012-06-18 | 2014-07-02 | 国家电网公司 | Process for measuring tracking precision of photovoltaic tracking system based on vector decomposition method |
| CN102818509A (en) * | 2012-08-09 | 2012-12-12 | 嘉兴优太太阳能有限公司 | High-precision square annular measuring device for accuracy degree of photovoltaic tracking system |
| CN102818508A (en) * | 2012-08-09 | 2012-12-12 | 嘉兴优太太阳能有限公司 | Free-angle spiral measuring device for accuracy degree of photovoltaic tracking system |
| CN102829702A (en) * | 2012-08-09 | 2012-12-19 | 嘉兴优太太阳能有限公司 | Ring type measurement device for accuracy of photovoltaic tracking system |
| CN102818508B (en) * | 2012-08-09 | 2015-12-02 | 嘉兴优太太阳能有限公司 | The photovoltaic tracking system accuracy screw type measurement mechanism of free angle |
| CN102818509B (en) * | 2012-08-09 | 2015-12-02 | 嘉兴优太太阳能有限公司 | High-precision photovoltaic tracking system accuracy square ring type measurement mechanism |
| CN106200694A (en) * | 2016-08-26 | 2016-12-07 | 中航动力股份有限公司 | A kind of dot matrix facula position feedback device and method |
| CN109375652A (en) * | 2018-11-05 | 2019-02-22 | 中国电力科学研究院有限公司 | A kind of Flat type photovoltaic tracking system tracking accuracy tester and test method |
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| Publication number | Publication date |
|---|---|
| CN101398301B (en) | 2010-04-14 |
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