CN111200397A - Simulation efficiency detection method of solar photoelectric module - Google Patents
Simulation efficiency detection method of solar photoelectric module Download PDFInfo
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- CN111200397A CN111200397A CN201811367856.7A CN201811367856A CN111200397A CN 111200397 A CN111200397 A CN 111200397A CN 201811367856 A CN201811367856 A CN 201811367856A CN 111200397 A CN111200397 A CN 111200397A
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Abstract
The invention provides a simulation efficiency detection method of a solar photoelectric module, which comprises the following steps: measuring the actual power generation efficiency of the solar photoelectric module under the actual use condition; calculating the optimal power generation efficiency of the solar photovoltaic module under the actual use condition according to the formula (A), wherein QA＝S×(F/1000)×[1‑C×(T‑TS)]… formula (A); calculating the efficiency ratio of the actual power generation efficiency to the optimal power generation efficiency of the solar photovoltaic module according to the formula (B), wherein WA＝Q/QA… formula (B); and correcting the efficiency ratio for different illumination intensities based on a correction table to simulate the power generation efficiency ratio of the solar photovoltaic module under the standard test condition. Wherein Q isA: optimum power generation efficiency under actual use conditions, S: rated power, F: measuring the illumination intensity, C: power temperature coefficient, T: actual temperature, TS: standard temperature, WA: the efficiency ratio of the actual power generation efficiency to the optimal power generation efficiency of the solar photovoltaic module, Q: practice ofAnd (4) generating efficiency.
Description
Technical Field
The invention relates to a method for detecting the simulation efficiency of a solar photoelectric module, in particular to a method for detecting the simulation efficiency, which can obtain a test result equivalent to that in a laboratory without disassembling the solar photoelectric module on a detection site to the laboratory for testing.
Background
Energy is an important dependency in human life. In the development history of human beings, people cannot avoid thinking about how to effectively manage the use of energy. Since the industrial revolution, fossil fuels (i.e., petroleum) have become the source of major energy for human beings strictly. However, with the gradual depletion of petroleum resources, extreme climate change due to greenhouse effect, and imbalance of ecosystem, alternative energy sources such as solar energy, wind energy, geothermal energy, hydraulic energy, etc. are actively developed in all countries of the world, and among them, the most spotlighted is solar energy. Since solar power generation has the advantages of inexhaustibility, easy combination with buildings, and the like, and due to the recent great progress of semiconductor technology, the photoelectric conversion efficiency of solar energy is continuously improved, so that solar photovoltaic modules are gradually widely applied.
However, environmental factors have a great influence on the power generation efficiency of the solar photovoltaic module, for example, the power generation efficiency of the solar photovoltaic module is greatly influenced by factors such as day and night, season, climate, and the like. In addition, under the normal use condition of the solar photoelectric module, the power generation efficiency is gradually reduced due to the problem of the service life of the equipment. Therefore, in addition to the above environmental factors, the power generation efficiency of the solar photovoltaic module itself will also be greatly affected by the loss of the solar photovoltaic module due to the use time.
In addition, the standard of the power generation efficiency of the solar photovoltaic module is to measure under a laboratory environment with standard test conditions (for example, standard illumination conditions of 25 ℃, atmospheric mass am (air mass) 1.5), and to use the power generation efficiency as the standard of the power generation efficiency of the solar photovoltaic module, generally, the so-called performance guarantee in the market is based on the power generation efficiency measured under the standard test conditions. However, when the power generation efficiency of the solar photovoltaic module is measured under actual conditions on site, in addition to environmental factors, in order to determine the influence of the reduction of the power generation efficiency of the solar photovoltaic module due to the loss of the solar photovoltaic module in use time, the solar photovoltaic module to be measured needs to be disassembled and then transported to a laboratory for measurement under standard test conditions. However, this method is not only inefficient, but also affects economic efficiency because the solar photovoltaic module cannot generate electricity during disassembly.
The present inventors have actively pursued research and development in view of the above-mentioned needs, and have expected to provide a method for detecting simulation efficiency of a solar photovoltaic module, which can directly perform efficiency measurement on the solar photovoltaic module on site and simulate a measurement result under a standard condition in a laboratory, so as to meet economic benefits. The present invention has been developed in the end through continuing experimentation and effort.
Disclosure of Invention
The method comprises the following steps:
measuring the actual power generation efficiency of the solar photoelectric module under the actual use condition;
calculating the optimal power generation efficiency of the solar photoelectric module under the actual use condition according to the following formula (A);
QA＝S×(F/1000)×[1-C×(T-TS)]… formula (A);
calculating the efficiency ratio of the actual power generation efficiency and the optimal power generation efficiency of the solar photoelectric module according to the following formula (B);
WA＝Q/QA… formula (B); and
correcting the efficiency ratio for different illumination intensities based on a correction table to simulate the power generation efficiency ratio of the solar photovoltaic module under a standard test condition;
wherein Q isA: optimum power generation efficiency under actual use conditions, S: rated power, F: measuring the illumination intensity, C: power temperature coefficient, T: actual temperature, TS: a standard temperature; wA: the efficiency ratio of the actual power generation efficiency to the optimal power generation efficiency of the solar photovoltaic module, Q: actual power generation efficiency.
In the above method, the correction table is prepared according to the following steps:
step 1: measuring the actual power generation efficiency of the solar photoelectric module under standard test conditions of different illumination intensities;
step 2: calculating the optimal power generation efficiency of the solar photoelectric module under standard test conditions of different illumination intensities according to a formula (C);
QBformula (C) S × (F/1000) …;
and step 3: respectively calculating the efficiency ratio of the actual power generation efficiency of the solar photovoltaic module under the standard test conditions of different illumination intensities to the optimal power generation efficiency of the solar photovoltaic module under the standard test conditions according to a formula (D);
WB＝QC/QB… formula (D); and
and 4, step 4: tabulating the efficiency ratio calculated in the step 3 relative to different illumination intensities;
wherein Q isB: optimum power generation efficiency under standard test conditions, WB: the ratio of the actual power generation efficiency under the standard test condition to the optimal power generation efficiency of the solar photovoltaic module under the standard test condition, QC: actual power generation performance under standard test conditions.
In the above method, in step 4, the efficiency ratio of the illumination intensity of the solar photovoltaic module is calculated according to the linear relationship of the fixed slope exhibited by each efficiency ratio calculated in step 3.
In the above method, step 4 is to calculate the efficiency ratio of the illumination intensity of the solar photovoltaic module according to the linear relationship between the efficiency ratio of the illumination intensity of the solar photovoltaic module and the 2 efficiency ratios calculated in step 3 and closest to the efficiency ratio.
According to the method, the efficiency of the solar photoelectric module can be directly measured on site, and the measurement result under the standard condition of a laboratory can be simulated, so that the economic benefit is met.
Drawings
FIG. 1 is a process diagram illustrating a method for testing the simulation performance of a solar photovoltaic module according to the present invention; and
fig. 2 is a diagram for explaining a procedure of making a correction table.
Detailed Description
Hereinafter, the simulation performance testing method of the solar photovoltaic module according to the present invention will be described with reference to fig. 1 to 2. Fig. 1 is a process diagram for illustrating a method of detecting simulation performance of a solar photovoltaic module according to the present invention. Fig. 2 is a diagram for explaining a procedure of making a correction table. The symbols used in the present invention will be described below. The symbols described below apply to the entire content of the present invention.
Q: actual power generation efficiency under actual use conditions; qA: the optimal power generation efficiency under actual use conditions; wA: the efficiency ratio of the actual power generation efficiency of the solar photoelectric module to the optimal power generation efficiency; wA％：WAPercent potency of (c); wf％: simulating the percentage of the generating efficiency under the standard test condition; qB: optimal power generation efficiency under standard test conditions; qC: actual power generation efficiency under standard test conditions; wB: the efficiency ratio of the actual power generation efficiency of the solar photovoltaic module under the standard test conditions with different illumination intensities to the optimal power generation efficiency of the solar photovoltaic module under the standard test conditions; wB％：WBPercent potency of (c); e: a percentage efficiency correction value; s: rated power; f: measuring the illumination intensity; c: a power temperature coefficient; t: the actual temperature; t isS: and (4) standard temperature.
Further, Q in the present invention？、QA？、QB？、QC？、WA？、WA％？、WB？、WB％？、Wf％、E？Is there? Are the values of the intensity of sunlight, these symbols are shown in? The values of this parameter (for example Q) at the indicated values of the intensity of sunlight100The solar intensity is 100W/m2The value of the actual power generation efficiency).
First, referring to fig. 1, a simulation method for detecting the efficiency of a solar photovoltaic module according to the present invention is described.
The method comprises the following steps:
a step S101 of measuring the actual power generation efficiency Q of the solar photovoltaic module under the actual use condition;
calculating the optimal power generation efficiency Q of the solar photoelectric module under the actual use condition according to the following formula (A)AStep S102;
QA＝S×(F/1000)×[1-C×(T-TS)]… formula (A);
calculating the efficiency ratio W of the actual power generation efficiency to the optimal power generation efficiency of the solar photoelectric module according to the following formula (B)AStep S103;
WA＝Q/QA… formula (B); and
correcting the performance ratio W for each illumination intensity based on a correction tableASo as to simulate the generating efficiency ratio of the solar photoelectric module under the standard test condition S104.
Next, each step of the method of the present invention will be described in detail.
In step S101, the actual power generation efficiency Q of the solar photovoltaic module under actual use conditions is measured. Specifically, an operator can measure the solar photovoltaic module at any installation location of the solar photovoltaic module, and the data to be measured includes the temperature and the light intensity of the installation location and the power generation efficiency of the solar photovoltaic module. For example, a solar photovoltaic module with a rated power of 250W is measured in the morning to obtain a temperature of 20 ℃ and an illumination intensity of 100W/m at an installation site2Power generation efficiency Q of solar photoelectric module100Measurement at 25W; measuring the solar photoelectric module at noon to obtain the temperature of the place at 40 deg.C and the light intensity at 600W/m2Power generation efficiency Q of solar photoelectric module600Measuring the solar photoelectric module at 150W in the afternoon to obtain the measurement result with the temperature of 60 ℃ and the illumination intensity of 1200W/m2Power generation efficiency Q of solar photoelectric module1200The measurement result was 240W.
Next, in step S102, the optimal power generation efficiency Q of the solar photovoltaic module under the actual use condition is calculated according to the formula (a)AWherein the power temperature coefficient C is a predetermined value of 0.005 under the standard test condition of 25 deg.C, AM1.5, and the standard temperature TSIt was 25 ℃. For example, based on the formula (a), the optimal power generation efficiency of the solar photovoltaic module under the above 3 conditions can be obtained as follows:
QA100＝250×(100/1000)×[1-0.005×(20-25)]＝25.625W；
QA600＝250×(600/1000)×[1-0.005×(40-25)]＝138.75W；
QA1200＝250×(1200/1000)×[1-0.005×(60-25)]＝247.5W。
next, in step S103, the actual power generation efficiency Q and the optimal power generation efficiency Q of the solar photovoltaic module under the above conditions are calculated according to the above formula (B)APerformance ratio W ofA. Based on the above formula (B), we can obtain:
WA100＝Q100/QA100＝25/25.625＝0.9756；
WA600＝Q600/QA600＝150/138.75＝1.081；
WA1200＝Q1200/QA1200＝240/247.5＝0.969；
converted to a percentage of efficacy WA％97.56%, 100.81% and 96.9% respectively.
Finally, in step S104, the performance percentage W is corrected for each illumination intensity based on the correction tableA％To simulate thePercentage of generating efficiency W of solar photoelectric module under standard test conditionf％. Although the optimum power generation efficiency Q under actual conditions calculated based on this formula (A)AHas been found to correspond to the power generation performance obtained under standard conditions (for example, the temperature coefficient of power C in formula (A) is the value at standard test conditions of 25 ℃ and AM1.5, TSAt 25 ℃, 1000 in formula (A) as the reference light intensity, etc.), and a performance ratio WAAlso based on the optimal power generation efficiency QAAnd the ratio of the actual power generation efficiency Q, but actually, under the standard test conditions in the laboratory, the actual power generation efficiency Q is caused by the loss of the solar photovoltaic module due to the service time of the solar photovoltaic module, which affects the power generation efficiencyCAnd optimum power generation efficiency QBThere are still instances of inconsistencies. As can be seen from the above, the optimum power generation efficiency Q can be obtained even under the standard conditionsAThere is still the error of the solar photovoltaic module due to the time loss, so it is still necessary to correct the calculated performance percentage by using the correction table prepared under the standard test condition. Accordingly, the following correction table is prepared.
Next, a method for creating a correction table used in the method of the present invention will be described with reference to fig. 2 and tables 1 and 2 below. Table 1 is a corresponding table of illumination intensity versus percent efficacy. Table 2 is an example of a correction table.
As shown in fig. 2, the correction table used in the method for testing simulation performance of a solar photovoltaic module of the present invention is prepared according to the following steps:
step 1: measuring actual power generation efficiency Q of solar photoelectric module under standard test conditions of different illumination intensitiesC；
Step 2: calculating the optimal power generation efficiency Q of the solar photoelectric module under the standard test conditions of different illumination intensities according to a formula (C)B；
QBFormula (C) S × (F/1000) …;
and step 3: respectively calculating different illumination of the solar photoelectric module according to a formula (D)Actual power generation efficiency Q under standard test conditions of strengthCThe optimal power generation efficiency Q of the solar photoelectric module under the standard test conditionBPerformance ratio W ofB；
WB＝QC/QB… formula (D); and
and 4, step 4: tabulated according to the efficacy ratio calculated in step 3 for different illumination intensities.
The details of each step will be described below.
In step 1, the actual power generation efficiency under standard test conditions of different illumination intensities is measured for a solar photovoltaic module. For example, under standard test conditions (e.g., 25 ℃, atmospheric quality AM1.5), different illumination intensities (e.g., 200W/m) are performed for a solar photovoltaic module rated at 250W2、400W/m2、800W/m2) To obtain a measured value Q of the actual power generation efficiency under the standard test conditionC(e.g. Q)C200＝50W、QC400＝95W、QC800＝170W)。
Secondly, in step 2, calculating the optimal power generation efficiency Q of the solar photovoltaic module under standard test conditions of different illumination intensities according to the formula (C)B. According to the formula (C), the solar photovoltaic module with the rated power of 250W can be obtained under different illumination intensities (for example, 200W/m)2、400W/m2、800W/m2) Optimum power generation efficiency Q ofBE.g. QB200＝250×(200/1000)＝50W，QB400＝250×(400/1000)＝100W，QB800＝250×(800/1000)＝200W。
Thirdly, in step 3, the actual power generation efficiency Q of the solar photovoltaic module under the standard test conditions of different illumination intensities is respectively calculated according to the formula (D)CThe optimal power generation efficiency Q of the solar photoelectric module under the standard test conditionBPerformance ratio W ofB。
According to the formula (D), the actual power generation efficiency Q of the solar photoelectric module under the standard test conditions of different illumination intensities can be obtainedCTo and fromGood power generation efficiency QBPerformance ratio W ofBE.g. WB200＝QC200/QB200＝50/50＝1，WB400＝QC400/QB400＝95/100＝0.95，WB800＝QC800/QB8000.85 as 170/200, in terms of percentage of efficacy WB％Namely 100%, 95% and 85%.
Finally, in step 4, the percentage of performance W calculated according to step 3B％Table 1 is made for different illumination intensities.
[ Table 1]
| Illumination intensity [ W/m ]2] | Percentage of efficacy WB％ |
| 200 | 100％ |
| 400 | 95％ |
| 800 | 85％ |
Based on the data in Table 1, the results are due to the intensity of light and the percentage of efficacy WB％200、WB％400、WB％800Appear to have a decreasing relationship (e.g., 200W/m per lift)2The intensity of illumination is reduced by 5% of the efficacy), so W should be inferredB％1000(i.e., the light intensity is 1000W/m)2) The content was 80%. Because the illumination intensity is 1000W/m2I.e. the reference light intensity during the rated power measurement, therefore, the reference light intensity is 1000W/m2Is 0A correction table is prepared. Specifically, W isB％1000The 80% of the corrected value is regarded as the corrected value 0, and the efficiency percentages corresponding to other different illumination intensities are subtracted by 80%, so that the efficiency percentage corrected value E of the solar photoelectric module under different illumination intensities can be obtained, and the correction table of the table 2 is prepared. For example, the solar photoelectric module has a light intensity of 200W/m2、400W/m2、800W/m2The corresponding efficiency percentage modification value E is E200＝20％、E400＝15％、E800＝5％。
[ Table 2]
| Illumination intensity [ W/m ]2] | Percentage efficiency correction value E |
| 100 | 22.5％ |
| 200 | 20％ |
| 300 | 17.5％ |
| 400 | 15％ |
| 500 | 12.5％ |
| 600 | 10％ |
| 700 | 7.5％ |
| 800 | 5％ |
| 900 | 2.5％ |
| 1000 | 0 |
| 1100 | -2.5％ |
| 1200 | -5％ |
In addition, in Table 1, WB％200、WB％400、WB％800The relationship of decreasing in turn is presented, so that the efficiency percentage modification value E of different illumination intensities that are not actually measured can be calculated according to the relationship. For example, the solar photoelectric module has a light intensity of 600W/m2Due to the illumination intensity of 400W/m2And 800W/m2Corresponding efficiency percentage WB％95% and 85%, therefore, 600W/m can be deduced2Corresponding efficiency percentage WB％90% and the corresponding performance percentage correction value E in the correction table of Table 2600The content was 10%. In addition, when the light intensity is lower than the reference light intensity (1000W/m)2) The performance percentage modification E is positive and negative above the baseline illumination level.
Taking the performance percentage calculated under the actual conditions as an example, the performance percentage can be corrected by using the correction table obtained in the above table 2. Specifically, the correction table corresponds to an illumination intensity of 100W/m2、600W/m2、1200W/m2The efficiency percentage correction value E is 22.5 percent,10%, -5%, the performance percentage W is corrected based on the following formula (E)A％The percentage W of the generating efficiency under the simulation standard test condition can be obtainedf％：
Wf％＝WA％E … formula (E).
Wf％100＝WA％100-E100＝97.56％-22.5％＝75.06％；
Wf％600＝WA％600-E600＝100.81％-10％＝90.81％；
Wf％1200＝WA％1200-E1200＝96.9％-(-5％)＝101.9％。
Wf％100、Wf％600、Wf％1200Namely the percentage of the generating efficiency of the solar photoelectric module under the actual condition under the simulation standard test condition. Therefore, the power generation efficiency of the solar photoelectric module can be directly measured at the setting place, and the measurement result of the solar photoelectric module under the standard condition of a laboratory can be simulated.
Another example of creating a correction table will be described below with reference to fig. 2, tables three, and table four.
First, referring to fig. 2, in step 1, actual power generation efficiency under standard test conditions of different illumination intensities is measured for a solar photovoltaic module. For example, under standard test conditions, different illumination intensities (e.g., 200W/m) are performed for a solar photovoltaic module rated at 250W2、400W/m2、600W/m2、800W/m2、1000W/m2) To obtain a measured value Q of the actual power generation efficiency under the standard test conditionCE.g. QC200＝50W、QC400＝95W、QC600＝160W、QC800＝200W、QC1000＝230W。
Secondly, in step 2, calculating the optimal power generation efficiency Q of the solar photovoltaic module under standard test conditions of different illumination intensities according to the formula (C)B. According to the formula (C), the solar photoelectric module with the rated power of 250W can be obtained under different illumination intensities (for example, 200W/m)2、400W/m2、600W/m2、800W/m2、1000W/m2) Optimum power generation efficiency Q ofBE.g. QB200＝50W，QB400＝100W，QB600＝150W，QB800＝200W，QB1000＝250W。
Thirdly, in step 3, the actual power generation efficiency ratio W of the solar photovoltaic module under the standard test conditions of different light intensities is calculated according to the formula (D)BFrom the formula (D), the efficiency ratio W of the solar photoelectric module under the standard test conditions of different illumination intensities can be obtainedBE.g. WB200＝50/50＝1，WB400＝95/100＝0.95，WB600＝160/150＝1.067，WB800＝200/200＝1，WB1000230/250-0.92, converted to percentage of potency WB％Namely 100%, 95%, 106.67%, 100%, 92%.
Finally, in step 4, the percentage of efficacy W calculated according to step 3B％Table 3 was made for different illumination intensities.
[ Table 3]
| Illumination intensity [ W/m ]2] | Percentage of efficacy WB％ |
| 200 | 100％ |
| 400 | 95％ |
| 600 | 106.67％ |
| 800 | 100％ |
| 1000 | 92％ |
As illustrated in table 1 of the above examples, because of W as the reference illumination intensityB％1000Has a value of 92%, so that W of other different illumination intensities can be directly usedB％The value is subtracted by 92% to obtain the efficiency percentage correction value E of the solar photoelectric module under the standard test conditions of different illumination intensities, and the correction table of the table 4 is prepared. For example, the solar photoelectric module has a light intensity of 200W/m2、400W/m2、600W/m2、800W/m2The corresponding efficiency percentage modification value E is E200＝8％、E400＝3％、E600＝15％、E800Not more than 8%. Based on the display of Table 3, the percentage of efficacy W in Table 3B％The relationship is not the sequentially decreasing relationship presented in Table 1, and thus the efficiency percentage modification E is relative to other light intensities not actually measured by the solar photovoltaic module？The efficiency percentage W of the illumination intensity of the solar photoelectric module is usedB％？And nearest to the performance percentage WB％？2 actually measured efficacy percentage W of the intensity of lightB％The linear relationship is presented for the calculation. For example, in the case of a solar photovoltaic module, the illumination intensity is 300W/m2Percentage of efficiency correction value E？Due to being most adjacent to the illumination intensity of 300W/m22 actually measured illumination intensities of 200W/m2、400W/m2And the percentage of efficacy W of the 2 illumination intensitiesB％The values are 100% and 95%, respectively, and hence the light intensity is estimated to be 300W/m2Percentage of efficacy WB％？The value was 97.5%, and it can be concluded that the intensity of light was 300W/m2Percentage of efficiency correction value E？The value is 97.5% -92% ═ 5.5%. In addition, with respect to other not actually measuredEfficiency percentage correction value E of illumination intensity？The values are estimated in this manner, and the correction table of table 4 is created.
[ Table 4]
| Illumination intensity [ W/m ]2] | Percentage efficiency correction value E |
| 100 | 10.5％ |
| 200 | 8％ |
| 300 | 5.5％ |
| 400 | 3％ |
| 500 | 8.83％ |
| 600 | 15％ |
| 700 | 11.33％ |
| 800 | 8％ |
| 900 | 4％ |
| 1000 | 0 |
| 1100 | -2％ |
| 1200 | -4％ |
From the above, even though the performance percentage corresponding to each illumination intensity of the solar photovoltaic module panel under the standard condition does not show the linear relationship of the fixed slope shown in table 1, the correction table can be made in the above manner, and the performance percentage W calculated under the actual condition can be corrected by the correction tableA％。
Although the preferred embodiments of the present invention have been described in detail with reference to the drawings, the present invention is not limited to the above embodiments. It should be understood that various changes and modifications within the scope of the claims may be made by those skilled in the art, and that such changes and modifications are also within the technical scope of the present invention.
According to the simulation efficiency detection method of the solar photoelectric module, the efficiency of the solar photoelectric module can be directly measured at the setting place and the measurement result under the standard condition of a laboratory can be directly simulated, so that the solar photoelectric module does not need to be disassembled to the laboratory for measurement, and the economic benefit is met.
[ notation ] to show
QBQA … best power generation efficiency
QC… measurement value of actual power generation efficiency
Q … actual power generation efficiency
WB％、WA％、Wf％… percent Performance
S … rated power
F … measurement of illumination intensity
Temperature coefficient of C … power
T … actual temperature
TS… standard temperature
Claims (6)
1. A simulation efficiency detection method of a solar photoelectric module comprises the following steps:
measuring the actual power generation efficiency of the solar photoelectric module under the actual use condition;
calculating the optimal power generation efficiency of the solar photovoltaic module under the actual use condition according to the following formula (A);
QA＝S×(F/1000)×[1-C×(T-TS)]… formula (A);
calculating an efficiency ratio of an actual power generation efficiency to an optimum power generation efficiency of the solar photovoltaic module according to the following formula (B);
WA＝Q/QA… formula (B); and
a step of correcting the efficiency ratio for different illumination intensities based on a correction table to simulate the power generation efficiency ratio of the solar photovoltaic module under a standard test condition;
wherein Q isA: optimum power generation efficiency under actual use conditions, S: rated power, F: measuring the illumination intensity, C: power temperature coefficient, T: actual temperature, TS: standard temperature, WA: the efficiency ratio of the actual power generation efficiency to the optimal power generation efficiency of the solar photovoltaic module, Q: actual power generation efficiency.
2. The method of testing simulation performance of a solar photovoltaic module as claimed in claim 1, wherein the correction table is prepared according to the following steps:
step 1: measuring the actual power generation efficiency of the solar photoelectric module under standard test conditions of different illumination intensities;
step 2: calculating the optimal power generation efficiency of the solar photoelectric module under standard test conditions of different illumination intensities according to a formula (C);
QBformula (C) S × (F/1000) …;
and step 3: respectively calculating the efficiency ratio of the actual power generation efficiency of the solar photovoltaic module under standard test conditions with different illumination intensities to the optimal power generation efficiency of the solar photovoltaic module under the standard test conditions according to a formula (D);
WB＝QC/QB… formula (D); and
and 4, step 4: tabulating the efficiency ratio calculated in the step 3 relative to different illumination intensities;
wherein Q isB: optimum power generation efficiency under quasi-test conditions, WB: the ratio of the actual power generation efficiency under the standard test condition to the optimal power generation efficiency of the solar photovoltaic module under the standard test condition, QC: actual power generation performance under standard test conditions.
3. The method of detecting simulated performance of a solar photovoltaic module as claimed in claim 2, wherein in step 4, the performance ratio of the illumination intensity of the solar photovoltaic module is calculated according to the linear relationship of the fixed slope exhibited by each performance ratio calculated in step 3.
4. The method of detecting simulated performance of a solar photovoltaic module as claimed in claim 2, wherein in step 4, the performance ratio of the light intensity of the solar photovoltaic module is calculated according to the linear relationship between the performance ratio of the light intensity of the solar photovoltaic module and the 2 performance ratios calculated in step 3 and closest to the performance ratio.
5. The simulated performance testing method of a solar photovoltaic module as claimed in any one of claims 1 to 4, wherein said performance ratios are calculated by conversion into performance percentages.
6. The method according to claim 5, wherein in the step of simulating the power generation efficiency ratio of the solar photovoltaic module under the standard test condition based on the correction table, the performance percentage is corrected based on the following formula (E) to obtain the power generation efficiency percentage under the simulated standard test condition:
Wf％＝WA％e … formula (E)
Wherein E is the corrected value of the efficiency percentage of the solar photoelectric module under different illumination intensities, WA％Is the percentage of efficacy, Wf％Is the percentage of the power generation efficiency under the simulation standard test condition.
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