CN106649943B - A kind of evaluation method of building integrated photovoltaic system inclined-plane total radiation - Google Patents
A kind of evaluation method of building integrated photovoltaic system inclined-plane total radiation Download PDFInfo
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- CN106649943B CN106649943B CN201610865430.9A CN201610865430A CN106649943B CN 106649943 B CN106649943 B CN 106649943B CN 201610865430 A CN201610865430 A CN 201610865430A CN 106649943 B CN106649943 B CN 106649943B
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Abstract
The invention discloses a kind of evaluation methods of building integrated photovoltaic system inclined-plane total radiation, comprising: obtains the mounting condition of each photovoltaic array in building integrated photovoltaic system；Using meteorogical phenomena database, different mounting conditions are inputted, obtain photovoltaic array inclined-plane amount of radiation corresponding to different mounting conditions in the building integrated photovoltaic system；The sectional-continuous function for establishing photovoltaic array inclined-plane amount of radiation, by the photovoltaic array inclined-plane amount of radiation calculating parameter under different mounting conditions, it is visual in image be segmented, display of classifying, corresponding relationship is obvious, very clear；According to newton Leibniz formula, definite integral is carried out to the sectional-continuous function, and then establish building integrated photovoltaic system inclined-plane total radiation functional relation.This evaluation method accuracy with higher, estimation process is easy, easy to operate, has preferable engineering practical value.
Description
Technical field
The present invention relates to technical field of photovoltaic power generation, more particularly to a kind of building integrated photovoltaic system inclined-plane total radiation
Evaluation method.
Background technique
In photovoltaic generating system, it is limited to photovoltaic module high production cost and the low feature of transfer efficiency, the investment of system
Cost greatly limits the popularization and application of photovoltaic generating system much higher than conventional fossil energy.In order to reduce system cost, mention
High system effectiveness, researcher have angularly carried out extensive exploration from the optimization design of the material of photovoltaic module, system.It is a kind of
Building integrated photovoltaic (the Building Integrated that photovoltaic generating system and building are organically combined
Photovoltaic, BIPV) system receives and pays close attention to.BIPV system does not need additional land occupation resource, and at the same time
Shorten the investment payback time, it has also become city so as to which system cost is effectively reduced using the electric attribute and material properties of component
The important research and developing direction of city's large-scale application photovoltaic generating system.In BIPV system, economy is imitated in generated energy prediction
The assessment of benefit and social benefit has vital meaning, is the important reference of photovoltaic system up-front investment decision.And
The generated energy of photovoltaic system and installation form and setting angle relationship that photovoltaic array installs geographical location and photovoltaic module are close
It cuts.Therefore, how more accurately to estimate generated energy also has become one of the research hotspot in renewable energy power generation field.
Currently, for the prediction of photovoltaic system generated energy, method that be used in particular for the up-front investment decision phase mainly have with
Lower two kinds: the simulation estimate method based on the photovoltaics design software such as RETScreen, PVsyst；Based on the total irradiance data of the sun, power generation
The physical method of station coordinates, ambient enviroment and system effectiveness.Photovoltaic system design software simulation, it is parallel for being applied to photovoltaic panel
When the large-scale centralized parallel net type power station of array shape distribution, there is accurate reference value, and build system being applied to BIPV
When, because it considers that single setting angle factor just seems inaccurate.With the appearance of BIPV, because of the combination of itself and building
Complexity, the inclined-plane amount of radiation for analyzing each component also become more complicated, only carry out system inclined-plane spoke with photovoltaic system design software
The amount of penetrating calculates and the prediction of BIPV system generated energy, has been unsatisfactory for error requirements.The characteristics of physical method is to need solar energy spoke
According to data such as the accurate data of forecast, power station coordinate and its system effectivenesies.In the up-front investment decision phase, in physical method too
The acquisition of positive energy irradiation parameters, generally uses general inclined-plane total radiation calculation formula.Because it contains multi-parameter multistage formula,
When for BIPV system containing more setting angles, computationally intensive, process is cumbersome, bigger error.Therefore, the total spoke in general inclined-plane
The not applicable inclined-plane total radiation for calculating BIPV system of the amount of penetrating calculation formula.
It can be seen that above two method can not meet accurate estimation BIPV system inclined-plane total radiation, to reach
The purpose of BIPV system generated energy Accurate Prediction.
Summary of the invention
Based on this, it is necessary to accurate estimation BIPV system inclined-plane total radiation can not be met for the prior art, with
The technical issues of reaching BIPV system generated energy Accurate Prediction provide a kind of estimation of building integrated photovoltaic system inclined-plane total radiation
Method.
A kind of evaluation method of building integrated photovoltaic system inclined-plane total radiation, comprising:
Obtain the different mounting conditions of each photovoltaic array in building integrated photovoltaic system；
According to the different mounting conditions, using meteorogical phenomena database, the different mounting conditions is inputted, difference is obtained
Each photovoltaic array inclined-plane amount of radiation corresponding to mounting condition；
According to each photovoltaic array inclined-plane amount of radiation, establish using the laying area of each photovoltaic array as independent variable
Sectional-continuous function；
According to newton Leibniz formula, definite integral is carried out to the sectional-continuous function；
According to the definite integral formula, the functional relation of building integrated photovoltaic system inclined-plane total radiation is established.
Compared with prior art, the beneficial effects of the present invention are:
The present invention obtains photovoltaic array inclined-plane amount of radiation according to different mounting conditions respectively, and then establishes piecewise function,
By the photovoltaic array inclined-plane amount of radiation calculating parameter under different mounting conditions, it is visual in image be segmented, display of classifying, it is corresponding
Relationship is obvious, very clear.According to newton Leibniz formula, definite integral, Jin Erjian are carried out to the sectional-continuous function
The functional relation of vertical building integrated photovoltaic system inclined-plane total radiation, so that this evaluation method accuracy with higher.It is whole
A process is easy, easy to operate, has preferable engineering practical value.
Detailed description of the invention
Fig. 1 is a kind of work flow diagram of the evaluation method of building integrated photovoltaic system of the invention inclined-plane total radiation.
Specific embodiment
Below with reference to subordinate list, the drawings and specific embodiments, the present invention will be further described in detail.
It is as shown in Figure 1 a kind of workflow of the evaluation method of building integrated photovoltaic system of the invention inclined-plane total radiation
Figure, comprising:
Step S101, obtains the mounting condition of each photovoltaic array in the BIPV system, and the mounting condition includes described
It is the combining form of photovoltaic module and building in the geographic coordinate data of BIPV system position, the BIPV system, described
The setting angle of photovoltaic array in combining form；It further include each photovoltaic array laying area in the combining form.
The geographic coordinate data of BIPV system position includes the longitude and latitude of BIPV system position
Degree；
The combining form includes building roof photovoltaic, external wall photovoltaic, building skylight photovoltaic；
The setting angle includes mounted angle and azimuth；
The building roof includes the flat roof m saddle roof, n pent roof and t, remaining construction exterior wall, building
The photovoltaic array inclined-plane amount of radiation calculation of skylight is equal to pent roof；
The photovoltaic array installation position angle of the m saddle roof isWithWherein i=1,2 ..., m；
The photovoltaic array installation position angle of the n pent roof isWherein j=1,2 ..., n；The photovoltaic on the t flat roofs
Array installation position angle is 0 degree；
The photovoltaic array of the saddle roof and pent roof tiles along the slope of roof, and the mounted angle is roof slope surface
Angle；The photovoltaic array mounted angle on the flat roof is optimum angle of incidence；
Step S102 is preferably adopted according to the mounting condition of photovoltaic array in the BIPV system using meteorogical phenomena database
With Meteonorm database, the different mounting conditions of each photovoltaic array are inputted, photovoltaic array corresponding to different mounting conditions is obtained
The component inclined-plane amount of radiation being laid on area, is shown in Table 1；
1 BIPV system of the present invention inclined-plane total radiation calculating parameter table of table
Step S103 establishes the sectional-continuous function H (s) of photovoltaic array inclined-plane amount of radiation under different mounting conditions；
Step S104 carries out definite integral to sectional-continuous function H (s) according to newton Leibniz formula:
Wherein,
Step S105 establishes BIPV system inclined-plane total radiation functional relation, then has
The E be certain time period in system by when DC generation amount ideal value；The sallFor photovoltaic battle array each in system
Total laying area of column；The HAFor system inclined-plane total radiation, as day peak value hourage or moon peak value hourage or Nian Feng
It is worth hourage.
The embodiments described above only express several embodiments of the present invention, and the description thereof is more specific and detailed, but simultaneously
Limitations on the scope of the patent of the present invention therefore cannot be interpreted as.It should be pointed out that for those of ordinary skill in the art
For, without departing from the inventive concept of the premise, various modifications and improvements can be made, these belong to guarantor of the invention
Protect range.Therefore, the scope of protection of the patent of the invention shall be subject to the appended claims.
Claims (3)
1. a kind of evaluation method of building integrated photovoltaic system inclined-plane total radiation characterized by comprising
Obtain the different mounting conditions of each photovoltaic array in building integrated photovoltaic system；
Using meteorogical phenomena database, the different mounting conditions of each photovoltaic array are inputted, are obtained corresponding to different mounting conditions
Photovoltaic array inclined-plane amount of radiation；
According to the photovoltaic array inclined-plane amount of radiation, the sectional-continuous function of photovoltaic array inclined-plane amount of radiation is established；
According to newton Leibniz formula, definite integral is carried out to the sectional-continuous function；
According to definite integral formula, the functional relation of building integrated photovoltaic system inclined-plane total radiation is established；
The mounting condition includes the geographic coordinate data of building integrated photovoltaic system position, in building integrated photovoltaic system
The setting angle of photovoltaic array in the combining form of photovoltaic module and building, the combining form；It further include the combination shape
Each photovoltaic array is laid with area in formula；The geographic coordinate data of building integrated photovoltaic system position includes building integrated photovoltaic
The longitude and latitude of system position；The combining form includes building roof photovoltaic, external wall photovoltaic, building skylight light
Volt；The setting angle includes mounted angle and azimuth；The building roof include m saddle roof, n pent roof and
T flat roofs, remaining construction exterior wall, the photovoltaic array inclined-plane amount of radiation calculation for building skylight are equal to pent roof；
The meteorological data is Meteonorm database, and the sectional-continuous function established is as follows:
S indicates the laying area of photovoltaic array,The inclined-plane amount of radiation of expression saddle roof photovoltaic array, i=1,
2 ... m,Indicate the laying area of saddle roof photovoltaic array,Respectively indicate pent roof, flat roof
The inclined-plane amount of radiation of photovoltaic array, j=1,2 ... n, k=1,2 ... t,Respectively indicate pent roof, flat roof light
The laying area of photovoltaic array.
2. the evaluation method of building integrated photovoltaic system according to claim 1 inclined-plane total radiation, which is characterized in that
According to newton Leibniz formula, definite integral is carried out to the sectional-continuous function H (s), specifically:
E be certain time period in system by when DC generation amount ideal value, sallIndicate the total laying area of photovoltaic array.
3. the evaluation method of building integrated photovoltaic system according to claim 2 inclined-plane total radiation, which is characterized in that
According to the definite integral formula, the functional relation of building integrated photovoltaic system inclined-plane total radiation is established, specifically:
Wherein, HAFor system inclined-plane total radiation.
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| CN107944741A (en) * | 2017-12-07 | 2018-04-20 | 北京能源集团有限责任公司 | Environmentally friendly income evaluation method and device |
| CN110136256B (en) * | 2019-04-30 | 2023-04-25 | 湖北省电力勘测设计院有限公司 | Calculation method of mountain photovoltaic array radiation quantity |
| CN114912370B (en) * | 2022-06-13 | 2023-08-22 | 中国科学院空天信息创新研究院 | Building photovoltaic potential analysis available area calculation method |
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| 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 |
| CN103942440A (en) * | 2014-04-25 | 2014-07-23 | 云南省电力设计院 | Photovoltaic power station real-time power-generating efficiency calculation method |
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| 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 |
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| CN104006879A (en) * | 2014-06-11 | 2014-08-27 | 河海大学常州校区 | Portable solar radiation tester and test method |
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