CN104318013B - A kind of optimum angle of incidence computational methods of roof distributed photovoltaic system - Google Patents
A kind of optimum angle of incidence computational methods of roof distributed photovoltaic system Download PDFInfo
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- CN104318013B CN104318013B CN201410564559.7A CN201410564559A CN104318013B CN 104318013 B CN104318013 B CN 104318013B CN 201410564559 A CN201410564559 A CN 201410564559A CN 104318013 B CN104318013 B CN 104318013B
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- 230000005611 electricity Effects 0.000 claims description 7
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Abstract
The invention discloses the optimum angle of incidence and the optimum angle of incidence of plural number row's photovoltaic module of a kind of optimum angle of incidence computational methods of roof distributed photovoltaic system, including single photovoltaic module.The beneficial effect that the present invention is reached：The present invention is the optimum angle of incidence design method of a kind of roof distributed photovoltaic system of proposition in the case where considering many factors；The optimum angle of incidence that single plural number arranges photovoltaic module is calculated in the case that output energy cost is minimum when ensureing photovoltaic system per kilowatt, optimal inclination angle can be installed according to actual conditions, the generating efficiency of photovoltaic system is improved.
Description
Technical field
The present invention relates to a kind of optimum angle of incidence computational methods of roof distributed photovoltaic system, belong to photovoltaic system application skill
Art field.
Background technology
As nowadays developing into for traditional energy industry is constantly destroyed up to bottleneck and the ecosystem in recent years, the mankind
Demand for the regenerative resource of cleaning is more and more urgent, therefore, and solar photovoltaic industry has obtained significant development.For light
Can volt industry turn into the main force of future source of energy industry, and its generating efficiency is deciding factor.
For the generating efficiency of photovoltaic system, its mounted angle can be described as very important influence factor.Therefore for
The design method of the optimum angle of incidence of photovoltaic system concerns following development trend of photovoltaic industry.
The content of the invention
To solve the deficiencies in the prior art, it is an object of the invention to provide a kind of effectively and rapidly to the distributed light in roof
The method that the optimum angle of incidence of volt system is calculated.
In order to realize above-mentioned target, the present invention is adopted the following technical scheme that：
A kind of optimum angle of incidence computational methods of roof distributed photovoltaic system, including single photovoltaic module optimum angle of incidence and
The optimum angle of incidence of plural number row's photovoltaic module, it is characterised in that：The optimum angle of incidence of the plural number row photovoltaic module, its calculation formula is pressed
According to front-seat photovoltaic module to heel row photovoltaic module block ratio distribution it is as follows：
Blocking ratio is
Blocking ratio is
Blocking ratio is
Blocking ratio is
Blocking ratio is
Blocking ratio is
Block ratioDo not generate electricity now, be not considered；
Wherein, parameter meaning is as follows：The rent on roof is m, a length of a in roof, a width of b；Single photovoltaic panel area is a length of
K, a width of t；Single photovoltaic module cost is n, and single photovoltaic module is in annual generating when optimum angle of incidence and shadow-free are blocked
Measure as Qmax；The inclination angle of photovoltaic arrays is α, and front-seat photovoltaic module blocks ratio for x to heel row photovoltaic module；Photovoltaic module electricity
Pond row is s；Cost per kilowatt hour generated energy is y；ηαMost preferably incline with unobstructed for the generated energy Q under unobstructed different angle
Generated energy Q under anglemaxBetween ratio；
The by-pass diode of each photovoltaic module is both provided with 3；The roof is square flat-top；It is every in the component
Block battery is at perfect condition.
A kind of optimum angle of incidence computational methods of foregoing roof distributed photovoltaic system, it is characterised in that：The single light
The optimum angle of incidence of component is lied prostrate, optimum angle of incidence is calculated using solar radiation calculation procedure.
The beneficial effect that the present invention is reached：The present invention is a kind of roof of proposition in the case where considering many factors
The optimum angle of incidence design method of distributed photovoltaic system；The minimum feelings of output energy cost when ensureing photovoltaic system per kilowatt
The optimum angle of incidence that single plural number arranges photovoltaic module is calculated under condition, optimal inclination angle can be installed according to actual conditions, improved
The generating efficiency of photovoltaic system.
Brief description of the drawings
Fig. 1 is influence statistical form of the single battery shadow occlusion percentage to power；
Fig. 2 is ηαWith the function relation figure at inclination angle；
Fig. 3 is the cross section structure schematic diagram on Hohai University, Changzhou library roof.
Embodiment
The invention will be further described below in conjunction with the accompanying drawings.Following examples are only used for clearly illustrating the present invention
Technical scheme, and can not be limited the scope of the invention with this.
For the generating efficiency of photovoltaic system, its mounted angle can be described as very important influence factor.Therefore for
The design method of the optimum angle of incidence of photovoltaic system concerns following development trend of photovoltaic industry.
A kind of optimum angle of incidence computational methods of roof distributed photovoltaic system are now designed, including single photovoltaic module is most
Good inclination angle and the optimum angle of incidence of plural number row's photovoltaic module.
The optimum angle of incidence of plural number row's photovoltaic module, screening of its calculation formula according to front-seat photovoltaic module to heel row photovoltaic module
Keep off ratio distribution as follows：
Blocking ratio is
Blocking ratio is
Blocking ratio is
Blocking ratio is
Blocking ratio is
Blocking ratio is
Block ratioDo not generate electricity now, be not considered；
Wherein, parameter meaning is as follows：The rent on roof is m, a length of a in roof, a width of b；Single photovoltaic panel area is a length of
K, a width of t；Single photovoltaic module cost is n, and single photovoltaic module is in annual generating when optimum angle of incidence and shadow-free are blocked
Measure as Qmax；The inclination angle of photovoltaic arrays is α, and front-seat photovoltaic module blocks ratio for x to heel row photovoltaic module；Photovoltaic module electricity
Pond row is s；Cost per kilowatt hour generated energy is y；ηαMost preferably incline with unobstructed for the generated energy Q under unobstructed different angle
Generated energy Q under anglemaxBetween ratio；
The by-pass diode of each photovoltaic module is both provided with 3, and every piece of battery is at perfect condition in component.
Roof is square flat-top.
The optimum angle of incidence of single photovoltaic module, optimum angle of incidence is calculated using solar radiation calculation procedure.
Illustrated with reference to two embodiments：
Exemplified by representing Shanghai by Yangtze River Delta Area, single photovoltaic module optimum angle of incidence see the table below, and take 22 °；
Following table is the single photovoltaic module optimum angle of incidence statistical form of District of Shanghai：
ηαSee Fig. 2, and approximately meet function ηα=-8.65 × 10-5×(α-22)2+1；
Therefore, the optimum angle of incidence of photovoltaic module is arranged for plural number, the cost y of every kilowatt hour generated energy can be listed and ratio is blocked
Rate x and inclination alpha relational expression：
Block ratio
Block ratio
Block ratio
Block ratio
Block ratio
Block ratio
We are from this roof of Fig. 3 as case, and Fig. 3 is Hohai University, Changzhou library roof, can completion room
Top, makes a length of 13400mm, a width of 45850mm.
We are from Trina Solar TSM-250P05A photovoltaic modulies as sample is calculated, and power is 250W.The photovoltaic
The wide 992mm of the long 1650mm of component, cell number is 6 × 9 pieces.Price is 1075 yuan, 200 yuan of support price.Assuming that roof rent is
300 yuan/square metre years.
Therefore, when the time of calculating is 20 years：
Blocking ratio is
TakeThe then cost minimization y when α=8 ° as can be seen from Table 1min=1.258956385 yuan/kilowatt hour.
Table 1 blocks ratioWhen, system inclination angle is with often spending electric cost relation table
Blocking ratio is
It can be seen that, when x increases, y increases, so should takeTherefore, its result should be identical with table 1,
The cost minimization y when α=8 °min=1.258956385 yuan/kilowatt hour.
Blocking ratio is
TakeThen as can be seen from Table 2, when α=9 °, ymin=1.3507984 yuan/kilowatt hour.
Table 2 blocks ratioWhen, system inclination angle is with often spending electric cost relation table
Blocking ratio is
It can be seen that, when x increases, y increases, so should takeIts result should be identical with table 2, when α=9 °, ymin=
1.3507984 member/kilowatt hour.
Blocking ratio is
TakeThen as can be seen from Table 3, when α=9 °, ymin=1.424211125 yuan/kilowatt hour.
Table 3 blocks ratioWhen, system inclination angle is with often spending electric cost relation table
Blocking ratio is
It can be seen that, when x increases, y increases, so should takeIts result should be identical with table 3, when α=9 °, ymin=
1.424211125 member/kilowatt hour.
In summary, when take inclination angle be 8 °, and make to block ratio beWhen often spend electricity cost it is minimum, now front and rear row light
The spacing for lying prostrate component is 1.71m.
The present invention is the optimum angle of incidence of a kind of roof distributed photovoltaic system of proposition in the case where considering many factors
Design method；Photovoltaic module is arranged to single plural number in the case that output energy cost is minimum when ensureing photovoltaic system per kilowatt
Optimum angle of incidence is calculated, and optimal inclination angle can be installed according to actual conditions, the generating efficiency of photovoltaic system is improved.
Described above is only the preferred embodiment of the present invention, it is noted that for the ordinary skill people of the art
For member, without departing from the technical principles of the invention, some improvement and deformation can also be made, these improve and deformed
Also it should be regarded as protection scope of the present invention.
Claims (1)
1. a kind of optimum angle of incidence computational methods of roof distributed photovoltaic system, including the optimum angle of incidence of single photovoltaic module and multiple
The optimum angle of incidence of number row's photovoltaic module, it is characterised in that：It is described plural number row photovoltaic module optimum angle of incidence, its calculation formula according to
Front-seat photovoltaic module to heel row photovoltaic module block ratio distribution it is as follows：
Blocking ratio is
Blocking ratio is
Blocking ratio is
Blocking ratio is
Blocking ratio is
Blocking ratio is
Block ratioDo not generate electricity now, be not considered；
Wherein, parameter meaning is as follows：The rent on roof is m, a length of a in roof, a width of b；The single a length of k of photovoltaic panel area, it is wide
For t；Single photovoltaic module cost is n, and the annual generated energy that single photovoltaic module is in when optimum angle of incidence and shadow-free are blocked is
Qmax；The inclination angle of photovoltaic arrays is α, and front-seat photovoltaic module blocks ratio for x to heel row photovoltaic module；Photovoltaic module battery is arranged
Number is s；Cost per kilowatt hour generated energy is y；ηαFor under the generated energy Q under unobstructed different angle and unobstructed optimum angle of incidence
Generated energy QmaxBetween ratio；
The by-pass diode of each photovoltaic module is both provided with 3；The roof is square flat-top；Every block of electricity in the component
Pond is at perfect condition；The optimum angle of incidence of the single photovoltaic module, is calculated most using solar radiation calculation procedure
Good inclination angle.
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Citations (4)
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| CN102594211A (en) * | 2012-01-19 | 2012-07-18 | 北京工商大学 | Optimizing method and tracking device for output power of partially shielded photovoltaic power generation system |
| CN103020766A (en) * | 2012-12-10 | 2013-04-03 | 上海电力设计院有限公司 | Photovoltaic power generation planning method for photovoltaic power generation system |
| CN103576036A (en) * | 2013-11-22 | 2014-02-12 | 海南天能电力有限公司 | Comprehensive quality evaluation technology for grid-connected photovoltaic (PV) power generation system |
| CN103823927A (en) * | 2014-02-12 | 2014-05-28 | 西安建筑科技大学 | Array-type configuration method for tracking-type photovoltaic devices |
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102594211A (en) * | 2012-01-19 | 2012-07-18 | 北京工商大学 | Optimizing method and tracking device for output power of partially shielded photovoltaic power generation system |
| CN103020766A (en) * | 2012-12-10 | 2013-04-03 | 上海电力设计院有限公司 | Photovoltaic power generation planning method for photovoltaic power generation system |
| CN103576036A (en) * | 2013-11-22 | 2014-02-12 | 海南天能电力有限公司 | Comprehensive quality evaluation technology for grid-connected photovoltaic (PV) power generation system |
| CN103823927A (en) * | 2014-02-12 | 2014-05-28 | 西安建筑科技大学 | Array-type configuration method for tracking-type photovoltaic devices |
Non-Patent Citations (2)
| Title |
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| 功率优化器对太阳能组件发电性能的研究;姜猛等;《太阳能学报》;20120930;第33卷(第9期);第1487-1489页 * |
| 并网光伏系统性能精细化评估方法研究;李芬等;《太阳能学报》;20130630;第34卷(第6期);第974-982页 * |
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Effective date of registration: 20160215 Address after: 210022 Changzhou Jin Ling North Road, Jiangsu, No. 200 Applicant after: CHANGZHOU CAMPUS OF HOHAI University Applicant after: CHANGZHOU TRINA SOLAR ENERGY Co.,Ltd. Address before: 210022 Changzhou Jin Ling North Road, Jiangsu, No. 200 Applicant before: CHANGZHOU CAMPUS OF HOHAI University |
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Address after: 210022 Changzhou Jin Ling North Road, Jiangsu, No. 200 Co-patentee after: trina solar Ltd. Patentee after: CHANGZHOU CAMPUS OF HOHAI University Address before: 210022 Changzhou Jin Ling North Road, Jiangsu, No. 200 Co-patentee before: CHANGZHOU TRINA SOLAR ENERGY Co.,Ltd. Patentee before: CHANGZHOU CAMPUS OF HOHAI University Address after: 210022 Changzhou Jin Ling North Road, Jiangsu, No. 200 Co-patentee after: TRINASOLAR Co.,Ltd. Patentee after: CHANGZHOU CAMPUS OF HOHAI University Address before: 210022 Changzhou Jin Ling North Road, Jiangsu, No. 200 Co-patentee before: trina solar Ltd. Patentee before: CHANGZHOU CAMPUS OF HOHAI University |