KR20140045610A - Device for measuring temperature of photovoltaic panel and photovoltaic system including the same - Google Patents
Device for measuring temperature of photovoltaic panel and photovoltaic system including the same Download PDFInfo
- Publication number
- KR20140045610A KR20140045610A KR1020120103081A KR20120103081A KR20140045610A KR 20140045610 A KR20140045610 A KR 20140045610A KR 1020120103081 A KR1020120103081 A KR 1020120103081A KR 20120103081 A KR20120103081 A KR 20120103081A KR 20140045610 A KR20140045610 A KR 20140045610A
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- South Korea
- Prior art keywords
- temperature
- solar panel
- solar
- panel
- temperature sensor
- Prior art date
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- 238000010248 power generation Methods 0.000 abstract description 12
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Images
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
- H02S50/00—Monitoring or testing of PV systems, e.g. load balancing or fault identification
-
- 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
Abstract
It provides a solar panel temperature measuring device and a photovoltaic power generation system that can measure the temperature of the solar panel in a more economical way by forming a temperature sensor capable of large area monitoring on the back of the solar panel. An apparatus for measuring a temperature of a solar panel according to an embodiment of the present invention includes a solar panel and a temperature sensor attached to a rear surface of the solar panel and measuring a temperature of the entire surface of the solar panel.
Description
The present invention relates to a photovoltaic power generation system capable of measuring temperature over the entire area of a solar panel and monitoring the temperature of multiple solar panels.
Photovoltaic panels used for solar power generation are formed by wiring a plurality of solar cells in series or in parallel, and are made of highly durable materials to enable long-term power generation in an external environment. Solar cells are packaged using low iron tempered glass with low light loss, sealing materials such as EVA (Ethylene Vinyl Acetate), and a back sheet to protect the back of the panel to prevent performance degradation due to external moisture penetration. do.
1 is a view showing a schematic shape and cross-sectional configuration of a solar panel according to the prior art.
Looking at the manufacturing process of the
On the other hand, there are a number of factors that affect the power generation performance in photovoltaic power generation, among which temperature is an important factor associated with the electron flow inside the solar cell. The short circuit current (I sc ) changes when the temperature of the solar cell changes by 1 ° C using A / ° C or% / ° C. The change in the open voltage (V oc ) is V / ° C or% / ° C. To display. In the case of solar panels using silicon solar cells, the output is generally reduced by 0.3 to 0.5% when the temperature of the panel rises by 1 ° C.
In addition, if the power generation performance is lowered compared to other cells due to shadows or damages to some of the solar cells connected in series, the cells do not generate normal power and thus not only degrade the performance of the entire string. In case of overheating, it may cause damage or fire.
Therefore, existing large-scale photovoltaic power plant is using a infrared camera or a temperature sensor to check the hot spot generation. However, they are expensive equipment and are used in the form of temporary inspections by specialists when output is reduced rather than continuous monitoring.
In order to solve this problem, a method of monitoring by attaching a temperature sensor to each solar panel has been examined, but the existing temperature sensor has a very small measuring area compared to the area of the solar panel, which is not suitable for measuring the temperature of the entire panel. In addition, the process of attaching the sensors to the back of the panel has to be added and it is difficult to maintain their high reliability there is a problem of low practicality. For example, in the case of a method in which a temperature sensor is separately attached to a junction box or a part of the panel at the back of the panel, and a failure is determined by comparing the output value of the sensor with a predetermined threshold value, the temperature of the large-area solar panel is For measurement, temperature sensors should be attached to as much of the panel as possible. Attaching such a large number of sensors individually to the panel and connecting the power distribution is very practical and complicated.
The present invention has been proposed to solve the above-mentioned problems, the solar cell which can measure the temperature of the solar panel in a more economical way by forming a temperature sensor capable of large area monitoring on the back of the solar panel inexpensively and easily It is an object to provide a temperature measuring device for a panel.
In addition, to provide a photovoltaic power generation system that can easily monitor the temperature of a large number of solar panels by forming a temperature sensor with long-term stability in the solar panel using materials and processes applicable to the current panel package technology. do.
The apparatus for measuring a temperature of a solar panel according to an embodiment of the present invention for achieving the above object is a temperature attached to the solar panel and the back of the solar panel to measure the temperature of the entire surface of the solar panel It includes a sensor.
The temperature sensor may be formed in the form of a metal thin film on a back sheet of the solar panel.
The temperature sensor may measure the temperature of the solar panel using the resistance value of the metal thin film, and may be formed of a single metal or two or more metal alloy thin films having a resistance change characteristic with temperature.
An apparatus for measuring a temperature of a solar panel according to another embodiment of the present invention may be attached to a solar panel partitioned into two or more blocks and a rear surface of two or more blocks of the solar panel, respectively, for the entire surface of the solar panel. At least two temperature sensors for measuring the temperature.
The photovoltaic power generation system according to an embodiment of the present invention includes a plurality of solar panels including a temperature sensor, a sensor network connected to some or all of the plurality of temperature sensors formed on the plurality of solar panels, and the sensor network. And a controller for controlling and measuring and monitoring the temperature of the plurality of solar panels.
The sensor network may be connected by matrix wirings, and the controller may select the horizontal-vertical wiring of the matrix sensor network and measure the temperature of a specific solar panel.
According to the present invention, it is possible to easily provide a temperature sensor that can monitor the temperature change of a large-area solar panel at low cost, so that it is possible to identify and repair the efficiency of the shadow or damage of some cells in the panel at an early stage. .
In addition, by fabricating the temperature sensor to the back sheet of the solar panel, there is no need to change the manufacturing process of the existing solar module, it is possible to prevent the occurrence of defects due to the individual wiring of the temperature sensor, It can be increased further.
In addition, in a photovoltaic power generation system including a plurality of photovoltaic panels, when abnormal temperature changes occur in a specific panel, a user may identify a location of a problem panel early to improve system operation efficiency.
1 is a block diagram of a solar panel according to the prior art.
2A and 2B are diagrams illustrating a solar panel having a temperature sensor according to an embodiment of the present invention.
3 is a configuration diagram of a solar panel having a temperature sensor according to another embodiment of the present invention.
4 is a block diagram of a solar power system according to an embodiment of the present invention.
The above and other objects, features, and advantages of the present invention will become more apparent by describing in detail exemplary embodiments thereof with reference to the attached drawings, which are not intended to limit the scope of the present invention. In the following description, well-known functions or constructions are not described in detail since they would obscure the invention in unnecessary detail. Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.
2A and 2B are configuration diagrams of a solar panel having a temperature sensor according to an embodiment of the present invention.
2A and 2B, a
The
The molding of the
The
A
3 is a configuration diagram of a solar panel having a temperature sensor according to another embodiment of the present invention.
As shown in FIG. 3, the
4 is a configuration diagram of a photovoltaic power generation system according to an embodiment of the present invention.
Referring to FIG. 4, a photovoltaic power generation system according to an embodiment of the present invention may include a plurality of
The
On the other hand, such a sensor network may be configured to monitor all the solar panels in the system as shown, and in some cases, only some panels may be connected for efficiency.
While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed exemplary embodiments. It will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the spirit and scope of the invention.
10, 20, 21: solar panel 30: sensor network
101, 201:
105, 205:
209, 209a, 209b, 209c: temperature sensor
211: terminal box
Claims (13)
A temperature sensor attached to a rear surface of the solar panel and measuring a temperature of the entire surface of the solar panel;
Temperature measuring device of the solar panel comprising a.
The temperature sensor is formed in the form of a metal thin film on the back sheet (back sheet) of the solar panel
Temperature measuring device of solar panels.
The temperature sensor is characterized in that for measuring the temperature of the solar panel using the resistance value of the metal thin film.
Temperature measuring device of solar panels.
The temperature sensor is formed of a single metal or two or more metal alloy thin films having a resistance change characteristic with temperature.
Temperature measuring device of solar panels.
The temperature sensor is formed on the surface of the back sheet or inside the back sheet of a multi-layer structure
Temperature measuring device of solar panels.
At least two temperature sensors, each attached to a back surface of at least two blocks of the solar panel, for measuring a temperature of the entire surface of the solar panel;
Temperature measuring device of the solar panel comprising a.
The at least two temperature sensors are formed in the form of a metal thin film on a back sheet of the solar panel.
Temperature measuring device of solar panels.
The two or more temperature sensors are characterized by measuring the temperature of the solar panel using the resistance value of the metal thin film.
Temperature measuring device of solar panels.
A sensor network connected to some or all of the plurality of temperature sensors formed on the plurality of solar panels; And
A controller that controls the sensor network to measure and monitor temperatures of the plurality of solar panels;
Solar power system comprising a.
The temperature sensor is formed in the form of a metal thin film on the back sheet (back sheet) of the solar panel, characterized in that for measuring the temperature of the entire surface of the solar panel
Solar power system.
The temperature sensor is characterized in that for measuring the temperature of the solar panel using the resistance value of the metal thin film.
Solar power system.
The sensor network is characterized in that connected by a matrix (wiring) type wiring
Solar power system.
The controller selects the horizontal-vertical wiring of the matrix sensor network and measures the temperature of a specific solar panel.
Solar power system.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1020120103081A KR20140045610A (en) | 2012-09-18 | 2012-09-18 | Device for measuring temperature of photovoltaic panel and photovoltaic system including the same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1020120103081A KR20140045610A (en) | 2012-09-18 | 2012-09-18 | Device for measuring temperature of photovoltaic panel and photovoltaic system including the same |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| KR20140045610A true KR20140045610A (en) | 2014-04-17 |
Family
ID=50652924
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| KR1020120103081A KR20140045610A (en) | 2012-09-18 | 2012-09-18 | Device for measuring temperature of photovoltaic panel and photovoltaic system including the same |
Country Status (1)
| Country | Link |
|---|---|
| KR (1) | KR20140045610A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109211423A (en) * | 2018-11-21 | 2019-01-15 | 江苏启力新能源科技有限公司 | A kind of solar battery temperature testing device |
-
2012
- 2012-09-18 KR KR1020120103081A patent/KR20140045610A/en not_active Application Discontinuation
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109211423A (en) * | 2018-11-21 | 2019-01-15 | 江苏启力新能源科技有限公司 | A kind of solar battery temperature testing device |
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