CN105023197A - Method for determining generating capacity - Google Patents
Method for determining generating capacity Download PDFInfo
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- CN105023197A CN105023197A CN201510410655.0A CN201510410655A CN105023197A CN 105023197 A CN105023197 A CN 105023197A CN 201510410655 A CN201510410655 A CN 201510410655A CN 105023197 A CN105023197 A CN 105023197A
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- 238000000034 method Methods 0.000 title claims abstract description 10
- 238000010248 power generation Methods 0.000 claims description 4
- 238000003491 array Methods 0.000 claims description 3
- 230000005540 biological transmission Effects 0.000 claims description 3
- 238000011109 contamination Methods 0.000 claims description 3
- 230000005611 electricity Effects 0.000 claims description 3
- 230000001172 regenerating effect Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
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Abstract
The invention discloses a method for determining generating capacity. The annual average generating capacity Ep of a photovoltaic power station is calculated as follows: Ep=H*P*K. The method provided by the invention is convenient and accurate.
Description
Technical field
The present invention relates to a kind of method determining generated energy.
Background technology
Along with the energy in worldwide lacks and the aggravation of environmental problem, the regenerative resources such as development and utilization sun power, have become for a change following energy structure, maintain the grand strategy of the sustainable development of human society.China is energy-consuming big country, and greatly developing new forms of energy and regenerative resource has become China and readjust the energy structure, alleviate energy supply and demand contradiction, reduce environmental pollution, realizes the Important Action of sustainable development.Sun power is as a kind of inexhaustible, nexhaustible clean energy resource, and solar energy power generating has made positive exemplary role to economize energy, protection of the environment, has the value of popularity.The newly-increased grid-connected photovoltaic power generation capacity 10.6GW of China in 2014, accumulative installed capacity is only second to Germany, occupies second place of the world, and photovoltaic plant size expansion in 2015 will reach 17.8GW.Lot of domestic and foreign esbablished corporation all starts using solar photovoltaic power field in every way, this sunshine industry of layout.The requirement of photovoltaic generating system to designer of development is more and more higher, and some errors often appear in the calculating of loaded down with trivial details repetition.Meanwhile, high-quality, the roofing that can be used for doing photovoltaic generation and ground resource also along with the expansion of photovoltaic system reduces day by day, the high request for photovoltaic system efficiency is also extremely urgent.How to maximally utilise one of most important consideration object when sun power becomes present design of photovoltaic power station.
Summary of the invention
The object of the present invention is to provide a kind of convenience, determine the method for generated energy accurately.
Technical solution of the present invention is:
Determine a method for generated energy, it is characterized in that: photo-voltaic power generation station average annual energy output Ep is calculated as follows:
Ep=H×P×K
In formula:
ep---be online generated energy (kWh);
p---be system installed capacity (kW);
h---be local annual standard sunshine hour number (h);
k---be overall efficiency coefficient;
Overall efficiency COEFFICIENT K is the correction factor after considering various factors impact, comprising:
1) inclination angle of K1 photovoltaic arrays, position angle correction factor, because assembly angle, radiant quantity and the inconsistent loss caused of plane;
2) K2 current collection circuit, step-up transformer loss, because alternating current-direct current power distribution room and transmission line of electricity loss account for 3% of gross generation, corresponding reduction correction factor is taken as 97%;
3) K3 inverter efficiency is 95% ~ 98%;
4) K4 working temperature loss reduction, temperature raises and causes component efficiency to reduce;
5) surface contamination of K5 photovoltaic module causes component efficiency to reduce.
The present invention is convenient, accurate.
Below in conjunction with embodiment, the invention will be further described.
Embodiment
Determine a method for generated energy, photo-voltaic power generation station average annual energy output Ep is calculated as follows:
Ep=H×P×K
In formula:
ep---be online generated energy (kWh);
p---be system installed capacity (kW);
h---be local annual standard sunshine hour number (h);
k---be overall efficiency coefficient;
Overall efficiency COEFFICIENT K is the correction factor after considering various factors impact, comprising:
1) inclination angle of K1 photovoltaic arrays, position angle correction factor, because assembly angle, radiant quantity and the inconsistent loss caused of plane;
2) K2 current collection circuit, step-up transformer loss, because alternating current-direct current power distribution room and transmission line of electricity loss account for 3% of gross generation, corresponding reduction correction factor is taken as 97%;
3) K3 inverter efficiency is 95% ~ 98%;
4) K4 working temperature loss reduction, temperature raises and causes component efficiency to reduce;
5) surface contamination of K5 photovoltaic module causes component efficiency to reduce.
This method is relatively comprehensive, but for the assurance of overall efficiency coefficient, generally, the value of K is between 75%-85%.
Claims (1)
1. determine a method for generated energy, it is characterized in that: photo-voltaic power generation station average annual energy output Ep is calculated as follows:
Ep=H×P×K
In formula:
ep---be online generated energy (kWh);
p---be system installed capacity (kW);
h---be local annual standard sunshine hour number (h);
k---be overall efficiency coefficient;
Overall efficiency COEFFICIENT K is the correction factor after considering various factors impact, comprising:
1) inclination angle of K1 photovoltaic arrays, position angle correction factor, because assembly angle, radiant quantity and the inconsistent loss caused of plane;
2) K2 current collection circuit, step-up transformer loss, because alternating current-direct current power distribution room and transmission line of electricity loss account for 3% of gross generation, corresponding reduction correction factor is taken as 97%;
3) K3 inverter efficiency is 95% ~ 98%;
4) K4 working temperature loss reduction, temperature raises and causes component efficiency to reduce;
5) surface contamination of K5 photovoltaic module causes component efficiency to reduce.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510410655.0A CN105023197A (en) | 2015-07-14 | 2015-07-14 | Method for determining generating capacity |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510410655.0A CN105023197A (en) | 2015-07-14 | 2015-07-14 | Method for determining generating capacity |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105023197A true CN105023197A (en) | 2015-11-04 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201510410655.0A Pending CN105023197A (en) | 2015-07-14 | 2015-07-14 | Method for determining generating capacity |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114898232A (en) * | 2022-04-29 | 2022-08-12 | 中科云尚(南京)智能技术有限公司 | Photovoltaic power station unmanned aerial vehicle inspection method and system based on photovoltaic string data analysis |
-
2015
- 2015-07-14 CN CN201510410655.0A patent/CN105023197A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114898232A (en) * | 2022-04-29 | 2022-08-12 | 中科云尚(南京)智能技术有限公司 | Photovoltaic power station unmanned aerial vehicle inspection method and system based on photovoltaic string data analysis |
| CN114898232B (en) * | 2022-04-29 | 2023-08-15 | 中科云尚(南京)智能技术有限公司 | Photovoltaic power station unmanned aerial vehicle inspection method and system based on photovoltaic group string data analysis |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20151104 |