CN108696244A - The solar panel of solar photovoltaic generation system cleans determination method - Google Patents
The solar panel of solar photovoltaic generation system cleans determination method Download PDFInfo
- Publication number
- CN108696244A CN108696244A CN201810572192.1A CN201810572192A CN108696244A CN 108696244 A CN108696244 A CN 108696244A CN 201810572192 A CN201810572192 A CN 201810572192A CN 108696244 A CN108696244 A CN 108696244A
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- CN
- China
- Prior art keywords
- solar panel
- precipitation
- cleans
- inverter
- solar
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- 238000000034 method Methods 0.000 title claims abstract description 13
- 238000004140 cleaning Methods 0.000 claims abstract description 32
- 238000001556 precipitation Methods 0.000 claims description 42
- 239000000428 dust Substances 0.000 claims description 27
- 238000012216 screening Methods 0.000 claims description 17
- 230000005611 electricity Effects 0.000 claims description 5
- 238000010248 power generation Methods 0.000 claims description 3
- 238000005253 cladding Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 230000007613 environmental effect Effects 0.000 description 3
- 238000013139 quantization Methods 0.000 description 3
- 238000012423 maintenance Methods 0.000 description 2
- 238000009991 scouring Methods 0.000 description 2
- 238000013517 stratification Methods 0.000 description 2
- 230000007812 deficiency Effects 0.000 description 1
- 235000013399 edible fruits Nutrition 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000005286 illumination Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000000737 periodic effect Effects 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02S—GENERATION OF ELECTRIC POWER BY CONVERSION OF INFRARED RADIATION, VISIBLE LIGHT OR ULTRAVIOLET LIGHT, e.g. USING PHOTOVOLTAIC [PV] MODULES
- H02S40/00—Components or accessories in combination with PV modules, not provided for in groups H02S10/00 - H02S30/00
- H02S40/10—Cleaning arrangements
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/50—Photovoltaic [PV] energy
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E40/00—Technologies for an efficient electrical power generation, transmission or distribution
- Y02E40/70—Smart grids as climate change mitigation technology in the energy generation sector
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
- Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
- Y04S10/00—Systems supporting electrical power generation, transmission or distribution
- Y04S10/50—Systems or methods supporting the power network operation or management, involving a certain degree of interaction with the load-side end user applications
Abstract
The invention discloses a kind of solar panels of solar photovoltaic generation system to clean determination method, including power station, and a inverter and m solar panel are equipped in power station;M solar panel is divided into a groups, and m is the multiple of a, and each inverter is electrically connected with m/a solar panel, sets 1 inverter as mark post inverter, cleans each solar panel being connect with mark post inverter daily;The present invention has the characteristics of realizing photovoltaic module dynamic cleaning, improving photovoltaic plant operational efficiency.
Description
Technical field
The present invention relates to solar photovoltaic generation system technical fields, can effectively ensure that generating efficiency more particularly, to one kind
Solar photovoltaic generation system solar panel clean determination method.
Background technology
Due to the influence of the factors such as weather, environment, solar components surface is caused to be easy dust stratification, and " dust " is to influence too
One important factor of positive energy photovoltaic generating system efficiency, how fine weather short of rain are conducive to photovoltaic generation, but following
Influence be that assembly surface dust stratification is more, it is therefore necessary to irregular cleaning is carried out to solar components.If photovoltaic module has ash
Dirt can influence the intensity of illumination of photovoltaic cell, and then can influence the output power of photovoltaic cell.For dust cladding thickness for
The problem of electricity more difficult quantization, generally according to the micro-judgment of operation maintenance personnel, enchancement factor is larger;And photovoltaic plant is because of cleaning week
Phase is unreasonable, will also result in electric quantity loss caused by non-normal wash.
Technological means is limited at present, and the factor due to influencing generated energy is more and is difficult to evaluate, and dust cladding thickness is to electricity
The more difficult quantization of influence of amount;And the intelligent operation management system for lacking science supports that the reasonability of artificial decision is to be improved;It closes
The photovoltaic module dynamic cleaning period of reason is difficult to judge.
Invention content
The goal of the invention of the present invention is to overcome solar photovoltaic generation system in the prior art that can not determine when
The deficiency for carrying out photovoltaic module cleaning, provides a kind of sun for the solar photovoltaic generation system can effectively ensure that generating efficiency
It can solar panel cleaning determination method.
To achieve the goals above, the present invention uses following technical scheme:
A kind of solar panel of solar photovoltaic generation system cleans determination method, including power station, and a is equipped in power station
A inverter and m solar panel;M solar panel is divided into a groups, and m is the multiple of a, and each inverter is and m/a
A solar panel electrical connection sets 1 inverter as mark post inverter, and daily cleaning connect each with mark post inverter
Solar panel;Include the following steps:It sets at the time of last time all solar panel cleanings are completed as T1;
(1-1) calculates T1 to the accumulative actual power hourage H1 at current time and accumulative mark post power generation hourage H2;
(1-2) calculates T1 to the accumulative dust screening rate at current time;
(1-3) cleans economic coefficient as accumulative dust screening rate >, and the horizontal > of precipitation in future time section is predetermined
When threshold value, then do not clean;
When accumulative dust screening rate > cleans economic coefficient, and precipitation level≤predetermined threshold in future time section
When, then it provides cleaning and suggests;
(1-4) when accumulative dust screening rate < cleans economic coefficient, then return to step (1-1).
The more difficult quantization of influence of the dust cladding thickness for generated energy, generally according to the micro-judgment of operation maintenance personnel, at random
Factor is larger.If photovoltaic plant is made periodic cleaning, cannot power station generated energy fully be improved by cleaning, because of the cleaning frequency
It is unreasonable, cause electric quantity loss caused by non-normal wash.
Therefore, the present invention considers cleaning economic coefficient, precipitation time node, precipitation, wind by mark post inverter
The relationship of the environmental factors such as speed, and propose to add up the concept of dust screening rate, photovoltaic module dynamic cleaning is realized, to improving photovoltaic
Power station operational efficiency and operation management level are of great significance.
Preferably, the installation for adding up the generated energy/power station read on H1=T1 to all inverters at current time is held
It measures, adds up the installed capacity of generated energy/mark post inverter read on the mark post inverter of H2=T1 to current time.
Preferably, accumulative dust screening rate=((H2/H1) -1) × 100%.
Preferably, cleaning price/(the photovoltaic online electricity price × H1) of the cleaning economic coefficient=1KW photovoltaic modulies.
Preferably, future time section is precipitation time node D, D=1,2 ..., n;D=1,2 ..., n indicate future 1
It, have precipitation within 2 days, n days 3 days ...;
Local meteorological data is collected, the precipitation difference of occasional drizzles, light rain, moderate rain, heavy rain, heavy rain, torrential rain is set
With R1, R2 ..., R6;
Gentle breeze and wind, fresh breeze, high wind, strong wind, strong wind, strong gale wind speed difference position W1, W2 ..., W7.
Preferably, setting precipitation and the wind speed shared weight in precipitation level is respectively X1, X2, and X1+X2=1,
The then horizontal L=of precipitation (Ri × X1+Wj × X2)/D, i=1,2,3,4,5,6;J=1,2,3,4,5,6,7.
Therefore, the present invention has the advantages that:By mark post inverter, cleaning economic coefficient, precipitation are considered
The relationship of the environmental factors such as timing node, precipitation, wind speed, and propose to add up the concept of dust screening rate, realize photovoltaic module
Dynamic cleaning improves photovoltaic plant operational efficiency.
Description of the drawings
Fig. 1 is a kind of flow chart of the present invention.
Specific implementation mode
The present invention will be further described with reference to the accompanying drawings and detailed description.
Embodiment as shown in Figure 1 is a kind of solar panel cleaning determination method of solar photovoltaic generation system,
Including power station, 20 5KW inverters and 27936 pieces of 315w solar panels are equipped in power station;27936 solar panels
It is divided into 20 groups, each inverter is electrically connected with 27936/20 solar panel, sets 1 inverter as mark post inversion
Device cleans each solar panel being connect with mark post inverter daily;Include the following steps:Set last time all solar energy
T1 was before 30 days at the time of solar panel cleaning is completed;
Step 100, T1 to the accumulative actual power hourage H1 at current time and accumulative mark post power generation hourage H2 are calculated;
H1=T1 is to the 901800kwh/8800KW=102.447h at current time, H2=T1 to current time
533kwh/5KW=106.6h.The installed capacity of mark post inverter is 5KW, the power station component with the dynamic cleaning of the being obtained period
Possess the environmental conditions such as identical temperature, dust, rainfall, wind speed.
Step 200, T1 is calculated to the accumulative dust screening rate at current time;
Accumulative dust screening rate=((H2/H1) -1) × 100%=((106.6/102.447) -1) × 100%=
4.054%.
Step 300, when adding up dust screening rate > cleaning economic coefficient, building of whether cleaning is provided according to precipitation level
View;
When accumulative dust screening rate > cleans economic coefficient, and the horizontal > predetermined thresholds of precipitation in future time section
When, then it does not clean;
When accumulative dust screening rate > cleans economic coefficient, and precipitation level≤predetermined threshold in future time section
When, then it provides cleaning and suggests;
Cleaning price/(photovoltaic online electricity price × H1)=3.5 yuan/KW of cleaning economic coefficient=1KW photovoltaic modulies ×
(0.85 yuan × 102.447h)=4.019%.
Rainfall is horizontal main related with three factors, is precipitation time node, precipitation, wind speed respectively, wherein precipitation,
Wind speed is obtained by meteorological weather forecast, and precipitation=precipitation rate * precipitation hourages.
Wherein precipitation speed data distribution is as follows:
Occasional drizzles:Precipitation rate is less than 0.25 mm hr;
Light rain:Precipitation rate is between 0.25 mm hr and 1.0 mm hrs;
Moderate rain:Precipitation rate is between 1.0 mm hrs and 4.0 mm hrs;
Heavy rain:Precipitation rate is between 4.0 mm hrs and 16.0 mm hrs;
Heavy rain:Precipitation rate is between 16.0 mm hrs and 50.0 mm hrs;
Torrential rain:Precipitation rate is more than 50.0 mm hrs.
Wherein air speed data distribution is as follows:
Gentle breeze:Wind speed is between 3.4 meter per seconds and 5.5 meter per seconds;
And wind:Wind speed is between 5.5 meter per seconds and 8 meter per seconds;
Fresh breeze:Wind speed is between 8 meter per seconds and 10.8 meter per seconds;
High wind:Wind speed is between 10.8 meter per seconds and 13.9 meter per seconds;
Strong wind:Wind speed is between 13.9 meter per seconds and 17.2 meter per seconds;
Strong wind:Wind speed is between 17.2 meter per seconds and 20.8 meter per seconds;
Strong gale:Wind speed is between 20.8 meter per seconds and 24.5 meter per seconds.
Different degrees of rainfall is different to the scouring effect of component dust, it is generally the case that rainfall is bigger, washes away effect
Fruit is better.Under certain rainfall intensity, wind speed decides the angle of rain line and photovoltaic panel, and the difference of the angle will also result in
Rainwater is different to the scouring effect of component dust.
Local meteorological data is collected, the precipitation difference of occasional drizzles, light rain, moderate rain, heavy rain, heavy rain, torrential rain is set
With R1, R2 ..., R6;
Gentle breeze and wind, fresh breeze, high wind, strong wind, strong wind, strong gale wind speed difference position W1, W2 ..., W7.
Future time section is precipitation time node D, D=1,2 ..., n;D=1,2 ..., n indicate 1 day future, 2 days, 3
It ... there is precipitation within n days;
Setting precipitation and the wind speed shared weight in precipitation level is respectively X1, X2, and X1+X2=1, then precipitation is horizontal
L=(Ri × X1+Wj × X2)/D, i=1,2,3,4,5,6;J=1,2,3,4,5,6,7.
Step 400, as accumulative dust Zhe Bishuai <When cleaning economic coefficient, then return to step 100.
It should be understood that this embodiment is only used to illustrate the invention but not to limit the scope of the invention.In addition, it should also be understood that,
After having read the content of the invention lectured, those skilled in the art can make various modifications or changes to the present invention, these etc.
Valence form is also fallen within the scope of the appended claims of the present application.
Claims (6)
1. a kind of solar panel of solar photovoltaic generation system cleans determination method, characterized in that including power station, power station
In be equipped with a inverter and m solar panel;M solar panel is divided into a groups, and m is the multiple of a, each inverter
It is electrically connected with m/a solar panel, sets 1 inverter as mark post inverter, daily cleaning connects with mark post inverter
The each solar panel connect;Include the following steps:It sets at the time of last time all solar panel cleanings are completed as T1;
(1-1) calculates T1 to the accumulative actual power hourage H1 at current time and accumulative mark post power generation hourage H2;
(1-2) calculates T1 to the accumulative dust screening rate at current time;
(1-3) cleans economic coefficient, and the horizontal > predetermined thresholds of precipitation in future time section as accumulative dust screening rate >
When, then it does not clean;
When accumulative dust screening rate > cleans economic coefficient, and when precipitation level≤predetermined threshold in future time section, then
Cleaning is provided to suggest;
(1-4) when accumulative dust screening rate < cleans economic coefficient, then return to step (1-1).
2. the solar panel of solar photovoltaic generation system according to claim 1 cleans determination method, feature
It is to add up the installed capacity in generated energy/power station read on all inverters of H1=T1 to current time, H2=T1 is to current
Add up the installed capacity of the generated energy/mark post inverter read on the mark post inverter at moment.
3. the solar panel of solar photovoltaic generation system according to claim 1 cleans determination method, feature
It is to add up dust screening rate=((H2/H1) -1) × 100%.
4. the solar panel of solar photovoltaic generation system according to claim 1 cleans determination method, feature
It is cleaning price/(the photovoltaic online electricity price × H1) of the cleaning economic coefficient=1KW photovoltaic modulies.
5. the solar panel of solar photovoltaic generation system according to claim 1 cleans determination method, feature
It is that future time section is precipitation time node D, D=1,2 ..., n;D=1,2 ..., n indicate 1 day, 2 days, n days 3 days ... following
There is precipitation;
Collect local meteorological data, setting occasional drizzles, light rain, moderate rain, heavy rain, heavy rain, torrential rain precipitation use respectively R1,
R2,…,R6;
Gentle breeze and wind, fresh breeze, high wind, strong wind, strong wind, strong gale wind speed difference position W1, W2 ..., W7.
6. the solar panel of solar photovoltaic generation system according to claim 5 cleans determination method, feature
It is that setting precipitation and the wind speed shared weight in precipitation level is respectively X1, X2, and X1+X2=1, then the horizontal L=of precipitation
(Ri × X1+Wj × X2)/D, i=1,2,3,4,5,6;J=1,2,3,4,5,6,7.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810572192.1A CN108696244B (en) | 2018-06-05 | 2018-06-05 | Cleaning and judging method for solar cell panel of solar photovoltaic power generation system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810572192.1A CN108696244B (en) | 2018-06-05 | 2018-06-05 | Cleaning and judging method for solar cell panel of solar photovoltaic power generation system |
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| Publication Number | Publication Date |
|---|---|
| CN108696244A true CN108696244A (en) | 2018-10-23 |
| CN108696244B CN108696244B (en) | 2020-09-04 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111337806A (en) * | 2020-03-06 | 2020-06-26 | 浙江正泰新能源开发有限公司 | Photovoltaic module cleaning judgment method, device, equipment and medium |
| CN111445036A (en) * | 2020-03-10 | 2020-07-24 | 苏州瑞得恩工业物联网科技有限公司 | Dynamic adjustment method for cleaning frequency of photovoltaic power station and storage medium |
| CN115412020A (en) * | 2022-08-08 | 2022-11-29 | 合肥中南光电有限公司 | Panel defrosting system for solar photovoltaic panel |
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| JP2016046950A (en) * | 2014-08-25 | 2016-04-04 | 住友電気工業株式会社 | Photovoltaic power generation system and panel cleaning method |
| CN105932965A (en) * | 2016-05-13 | 2016-09-07 | 何旭 | Method for measuring efficiency of photovoltaic power station system |
| KR20160122417A (en) * | 2015-04-14 | 2016-10-24 | 전자부품연구원 | Maintenance control apparatus of solar cell module using laser thickness gauge |
| WO2016190597A1 (en) * | 2015-05-27 | 2016-12-01 | (주)대연씨앤아이 | Solar panel cleaning device for solar photovoltaic power generating apparatus |
| CN107886191A (en) * | 2017-10-20 | 2018-04-06 | 中冶华天南京电气工程技术有限公司 | A kind of determination methods of photovoltaic module occasion of rinsing |
-
2018
- 2018-06-05 CN CN201810572192.1A patent/CN108696244B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2016046950A (en) * | 2014-08-25 | 2016-04-04 | 住友電気工業株式会社 | Photovoltaic power generation system and panel cleaning method |
| KR20160122417A (en) * | 2015-04-14 | 2016-10-24 | 전자부품연구원 | Maintenance control apparatus of solar cell module using laser thickness gauge |
| WO2016190597A1 (en) * | 2015-05-27 | 2016-12-01 | (주)대연씨앤아이 | Solar panel cleaning device for solar photovoltaic power generating apparatus |
| CN105932965A (en) * | 2016-05-13 | 2016-09-07 | 何旭 | Method for measuring efficiency of photovoltaic power station system |
| CN107886191A (en) * | 2017-10-20 | 2018-04-06 | 中冶华天南京电气工程技术有限公司 | A kind of determination methods of photovoltaic module occasion of rinsing |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111337806A (en) * | 2020-03-06 | 2020-06-26 | 浙江正泰新能源开发有限公司 | Photovoltaic module cleaning judgment method, device, equipment and medium |
| CN111445036A (en) * | 2020-03-10 | 2020-07-24 | 苏州瑞得恩工业物联网科技有限公司 | Dynamic adjustment method for cleaning frequency of photovoltaic power station and storage medium |
| CN111445036B (en) * | 2020-03-10 | 2023-05-30 | 苏州瑞得恩工业物联网科技有限公司 | Dynamic adjustment method for cleaning frequency of photovoltaic power station and storage medium |
| CN115412020A (en) * | 2022-08-08 | 2022-11-29 | 合肥中南光电有限公司 | Panel defrosting system for solar photovoltaic panel |
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| CN108696244B (en) | 2020-09-04 |
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