CN210120532U - Photovoltaic power plant environmental data acquisition equipment and photovoltaic power plant - Google Patents
Photovoltaic power plant environmental data acquisition equipment and photovoltaic power plant Download PDFInfo
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- CN210120532U CN210120532U CN201921472147.5U CN201921472147U CN210120532U CN 210120532 U CN210120532 U CN 210120532U CN 201921472147 U CN201921472147 U CN 201921472147U CN 210120532 U CN210120532 U CN 210120532U
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- 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
The application discloses a photovoltaic power station environmental data acquisition device and a photovoltaic power station, wherein the acquisition device comprises a reference cell and a solder strip connected with the reference cell, which are packaged inside, and a reference photovoltaic module which has the same angle as the installation angle of a photovoltaic module contained in the photovoltaic power station, wherein the reference cell and the photovoltaic cell in the photovoltaic module are the same type of cell, and the packaging mode of the reference photovoltaic module is the same as the packaging mode of the photovoltaic module; the connecting piece is arranged on the back of the reference photovoltaic assembly and connected with the welding strip; the measuring device is connected with the reference photovoltaic assembly through a connecting piece and used for measuring the short-circuit current and the temperature of the reference photovoltaic assembly so as to obtain the irradiation intensity. According to the technical scheme, the deviation between the measured irradiation intensity and the effective irradiation intensity received by the photovoltaic assembly in the photovoltaic power station can be reduced, and therefore the influence of the irradiation intensity on the evaluation and analysis of the operation condition of the photovoltaic power station can be reduced.
Description
Technical Field
The application relates to the technical field of photovoltaic power generation, more specifically to a photovoltaic power station environmental data acquisition equipment and photovoltaic power station.
Background
With the development of photovoltaic power generation technology, the installed capacity of a photovoltaic power station is continuously increased, and the evaluation and analysis of the operation condition of the photovoltaic power station is one of important subjects in the photovoltaic industry. In the operation process of the photovoltaic power station, because environmental data such as meteorological irradiation level and the like have certain influence on the power generation capacity of the photovoltaic power station, when the operation condition of the photovoltaic power station is evaluated and analyzed, the method has important significance in not only visually analyzing the power generation capacity, but also collecting the environmental data.
At present, an irradiation tester is often used for obtaining the irradiation intensity of a photovoltaic power station, and most of the irradiation tester is based on a thermopile sensor to carry out irradiation intensity test and is of a circular structure. When the irradiation intensity test is performed, because the structure of the irradiation tester is different from that of the photovoltaic module, the incident angle response of light on the irradiation tester is different from that of light on the photovoltaic module, and because the thermopile sensor and the photovoltaic module in the photovoltaic power station have a larger spectral response difference, the irradiation intensity obtained by using the irradiation tester and the irradiation intensity actually received by the photovoltaic module in the photovoltaic power station (i.e., the effective irradiation intensity) have a larger deviation, so that certain influence is caused on the evaluation and analysis of the operation condition of the photovoltaic power station.
In summary, how to reduce the deviation between the measured irradiation intensity and the effective irradiation intensity received by the photovoltaic module in the photovoltaic power station is a technical problem to be solved urgently by those skilled in the art at present.
SUMMERY OF THE UTILITY MODEL
In view of this, the present application provides a photovoltaic power station environmental data acquisition device and a photovoltaic power station, so as to reduce a deviation between a measured irradiation intensity and an effective irradiation intensity received by a photovoltaic module in the photovoltaic power station.
In order to achieve the above purpose, the present application provides the following technical solutions:
a photovoltaic power plant environmental data acquisition device comprising:
a reference cell and a solder strip connected with the reference cell are packaged inside, and a reference photovoltaic module with the same installation angle as that of a photovoltaic module contained in a photovoltaic power station is packaged inside, wherein the reference cell and the photovoltaic cell in the photovoltaic module are the same type of cell, and the packaging mode of the reference photovoltaic module is the same as that of the photovoltaic module;
the connecting piece is arranged on the back of the reference photovoltaic assembly and connected with the welding strip;
the measuring device is connected with the reference photovoltaic assembly through the connecting piece and used for measuring the short-circuit current and the temperature of the reference photovoltaic assembly so as to obtain the irradiation intensity.
Preferably, the reference photovoltaic module further comprises:
the sliced battery pieces are arranged around the reference battery piece and are separated from the reference battery piece by a preset distance;
the sliced battery piece is in insulated connection with the welding strip, and the sliced battery piece is a small battery piece obtained by cutting a battery piece which belongs to the same type as the photovoltaic battery piece.
Preferably, the connector is a junction box or a remo connector.
Preferably, the measuring device includes:
a first resistor for series connection with the reference photovoltaic component; wherein the resistance value of the first resistor is smaller than a first threshold value;
the temperature detection circuit is used for acquiring the temperature of the reference photovoltaic assembly;
and the analog-digital conversion processor is connected with the two ends of the first resistor and the temperature detection circuit and is used for converting first voltages at the two ends of the first resistor and obtaining the irradiation intensity through the converted first voltages and the temperature.
Preferably, the temperature detection circuit includes:
a second resistor and a third resistor connected in series with a second reference photovoltaic module; the sum of the resistance values of the second resistor and the third resistor is greater than a second threshold value;
the analog-to-digital conversion processor is connected with two ends of the third resistor and used for converting second voltages at two ends of the third resistor so as to obtain the temperature of the second reference photovoltaic module through the converted second voltages.
Preferably, the temperature detection circuit is a temperature sensor.
Preferably, the temperature sensor is a PT100 temperature sensor.
Preferably, the method further comprises the following steps:
and the display device is connected with the measuring device and is used for displaying the irradiation intensity.
Preferably, the display device is an LED display screen.
A photovoltaic power plant comprising a photovoltaic power plant environmental data acquisition apparatus as claimed in any one of the preceding claims.
The application provides a photovoltaic power station environmental data acquisition device and a photovoltaic power station, wherein the acquisition device comprises a reference cell and a solder strip connected with the reference cell, which are packaged inside, and a reference photovoltaic module with the same installation angle as that of a photovoltaic module contained in the photovoltaic power station, wherein the reference cell and the photovoltaic cell in the photovoltaic module are the same type of cell, and the packaging mode of the reference photovoltaic module is the same as that of the photovoltaic module; the connecting piece is arranged on the back of the reference photovoltaic assembly and connected with the welding strip; the measuring device is connected with the reference photovoltaic assembly through a connecting piece and used for measuring the short-circuit current and the temperature of the reference photovoltaic assembly so as to obtain the irradiation intensity.
According to the technical scheme, the reference photovoltaic module and the measuring device connected with the reference photovoltaic module are arranged, the packaging mode and the installation angle of the reference photovoltaic module are the same as those of the photovoltaic module in the photovoltaic power station, and the reference cell contained in the reference photovoltaic module and the photovoltaic cell in the photovoltaic module are the same type of cell, so that the reference photovoltaic module and the photovoltaic module in the photovoltaic power station have consistent incident angle response and spectral response, the deviation between the measured irradiation intensity and the effective irradiation intensity received by the photovoltaic module in the photovoltaic power station can be reduced, and the influence of the irradiation intensity on the evaluation and analysis of the operation condition of the photovoltaic power station can be further reduced.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly introduced below, it is obvious that the drawings in the following description are only embodiments of the present application, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.
Fig. 1 is a schematic front view of a reference photovoltaic module provided in an embodiment of the present application;
fig. 2 is a schematic backside view of a reference photovoltaic module provided in an embodiment of the present application;
fig. 3 is a schematic backside view of a double-sided reference photovoltaic module provided in an embodiment of the present application;
fig. 4 is a schematic diagram of irradiance measurements performed by a reference photovoltaic module and an irradiator, respectively, according to an embodiment of the present disclosure;
fig. 5 is a schematic structural diagram of a measurement apparatus according to an embodiment of the present disclosure;
FIG. 6 is a schematic structural diagram of another measuring device provided in an embodiment of the present application;
fig. 7 is a schematic structural diagram of another measurement device provided in an embodiment of the present application.
Detailed Description
The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
Referring to fig. 1 and 2, fig. 1 shows a front schematic view of a reference photovoltaic module provided in an embodiment of the present application, and fig. 2 shows a back schematic view of the reference photovoltaic module provided in an embodiment of the present application. The photovoltaic power plant environmental data acquisition equipment that this application embodiment provided can include:
a reference cell 11, a solder strip 12 connected with the reference cell 11, and a reference photovoltaic module 1 with the same installation angle as that of a photovoltaic module included in the photovoltaic power station are packaged in the photovoltaic power station, wherein the reference cell 11 and the photovoltaic cell in the photovoltaic module are the same type of cell, and the packaging mode of the reference photovoltaic module 1 is the same as that of the photovoltaic module;
the connecting piece 2 is arranged on the back of the reference photovoltaic module 1 and connected with the welding strip 12;
the measuring device is connected with the reference photovoltaic assembly 1 through a connecting piece 2 and is used for measuring the short-circuit current and the temperature of the reference photovoltaic assembly 1 so as to obtain the irradiation intensity.
The photovoltaic power station environmental data acquisition equipment provided by the application can comprise a reference photovoltaic assembly 1, a connecting piece 2 arranged on the back surface of the reference photovoltaic assembly 1 and connected with a welding strip 12 packaged in the reference photovoltaic assembly 1, and a measuring device connected with the reference photovoltaic assembly 1 through the connecting piece 2. Besides the solder strips 12, the reference photovoltaic module 1 also encapsulates a reference cell 11 connected with the solder strips 12; the measuring device is used for measuring the short-circuit current and the temperature of the reference photovoltaic module 1 so as to obtain the irradiation intensity through the short-circuit current and the temperature. In order to avoid the influence of the connecting element 2 on the operating temperature of the reference photovoltaic module 1 as much as possible, the connecting element 2 cannot be mounted on the front and back sides of the reference photovoltaic module 1, i.e., the connecting element 2 is mounted in a region other than the front and back sides of the reference photovoltaic module 1. Specifically, referring to fig. 2 and fig. 3, fig. 2 shows a schematic back side view of a single-sided reference photovoltaic module 1 (i.e., the reference cell 11 included therein is a single-sided cell), fig. 3 shows a schematic back side view of a double-sided reference photovoltaic module provided in an embodiment of the present application, and the connection member 2 is not located on the front and back sides of the reference cell 11, where the double-sided reference photovoltaic module is the reference photovoltaic module 1 in which the reference cell 11 included therein is a double-sided cell.
The packaging mode of the reference photovoltaic module 1 is the same as that of a photovoltaic module in a photovoltaic power station, specifically, the same packaging mode refers to that the type of glass used on the front side (i.e., the light irradiation side) of the module, the thickness of the module, the type of adhesive film used for packaging (for example, EVA is used for packaging), the type of back sheet used on the back side of the module, and the like are all the same, so as to reduce the influence on incident light due to different packaging modes, and enable the reference photovoltaic module 1 and the photovoltaic module in the photovoltaic power station to have similar temperature characteristics and other performances, thereby reducing the influence on the irradiation intensity test. And the installation angle of the reference photovoltaic module 1 is the same as the installation angle of the photovoltaic module in the photovoltaic power plant so that the reference photovoltaic module 1 and the photovoltaic module in the photovoltaic power plant have similar incident angle responses. In addition, the reference cell 11 included in the reference photovoltaic module 1 and the photovoltaic cell included in the photovoltaic module are the same type of cell (for example, both are N-type crystalline silicon cell, P-type crystalline silicon cell, etc., and both are single-sided cell or double-sided cell), so that the reference photovoltaic module 1 and the photovoltaic module in the photovoltaic power station have similar spectral responses. The reference cell 11 and the photovoltaic cell included in the photovoltaic module may be provided by the same module manufacturer (that is, the reference cell 11 may be obtained from the photovoltaic cell used in the photovoltaic module), so that the reference cell 11 and the photovoltaic cell have similar parameter data, thereby reducing the influence of the parameter data on the acquisition of the irradiation intensity. In addition, the reference cell 11 may have a similar degree of contamination as the photovoltaic cell, so as to reduce the influence on the incident light due to the difference of the degree of contamination.
In addition, it should be noted that, in order to avoid that the reference photovoltaic module 1 is in an unstable state due to the attenuation of received illumination during the operation process and thus affects the obtaining process of the irradiation intensity, the packaged reference photovoltaic module 1 may be fully illuminated in advance (specifically, the illumination may be performed when the illumination amount is greater than 200 kWh), so that the reference photovoltaic module 1 is attenuated and is in a stable state.
Referring to fig. 4, a schematic diagram of irradiance measurement performed by the reference photovoltaic module and the irradiator respectively according to the embodiment of the present application is shown, wherein an abscissa represents the irradiation intensity obtained by the irradiator, an ordinate represents the irradiation intensity obtained by the acquisition apparatus of the present application, discrete points in the diagram represent the above two data, and a straight line in the diagram is obtained by fitting the discrete points, and as can be seen from the diagram, the diagram has a better fitting degree, that is, the acquisition apparatus provided by the present application can be practically used for measuring the irradiation intensity of the photovoltaic power station. In addition, because the reference photovoltaic module 1 contained in the photovoltaic power station environmental data acquisition equipment and the photovoltaic module in the photovoltaic power station have similar spectral response and incident angle response through the arrangement mentioned above, the irradiation intensity obtained by the measuring device is closer to the effective irradiation intensity received by the photovoltaic module in the photovoltaic power station, namely, the deviation between the irradiation intensity and the effective irradiation intensity can be reduced, and the operation condition of the photovoltaic power station can be more accurately evaluated and analyzed by using the measured irradiation intensity.
According to the technical scheme, the reference photovoltaic module and the measuring device connected with the reference photovoltaic module are arranged, the packaging mode and the installation angle of the reference photovoltaic module are the same as those of the photovoltaic module in the photovoltaic power station, and the reference cell contained in the reference photovoltaic module and the photovoltaic cell in the photovoltaic module are the same type of cell, so that the reference photovoltaic module and the photovoltaic module in the photovoltaic power station have consistent incident angle response and spectral response, the deviation between the measured irradiation intensity and the effective irradiation intensity received by the photovoltaic module in the photovoltaic power station can be reduced, and the influence of the irradiation intensity on the evaluation and analysis of the operation condition of the photovoltaic power station can be further reduced.
The photovoltaic power plant environmental data acquisition equipment that this application embodiment provided can also include in the reference photovoltaic module 1:
the sliced battery pieces 13 are arranged around the reference battery piece 11 and are separated from the reference battery piece 11 by a preset distance;
the sliced battery piece 13 is in insulated connection with the solder strip 12, and the sliced battery piece 13 is a small battery piece obtained by cutting a battery piece which belongs to the same type as the photovoltaic battery piece.
When the reference photovoltaic module 1 is packaged, typesetting can be performed according to a mode of "single reference cell under multi-cell package" in IEC 60904-2 standard, that is, the sliced cells 13 can be arranged around the reference cell 11, wherein the sliced cells 13 are separated from the reference cell 11 by a preset distance (the preset distance can be preset according to the distance between two adjacent photovoltaic cells in the photovoltaic module), so that the optical environment of the reference cell 11 is as close as possible to the optical environment of the photovoltaic cells in the photovoltaic module, thereby improving the accuracy of irradiance test.
It should be noted that, when the sliced battery pieces 13 are arranged around the reference battery piece 11, only the reference battery piece 11 is connected with the solder strip 12 (specifically, referred to as conductive connection), and the sliced battery pieces 13 are connected with the solder strip 12 in an insulating manner, so as to avoid that the current generated by the sliced battery pieces 13 under the illumination condition is transmitted to the measuring device through the solder strip 12 and the connecting member 2 due to the conductive connection between the sliced battery pieces 13 and the solder strip 12, thereby improving the accuracy of irradiance acquisition.
The sliced cell 13 is a small cell obtained by cutting a cell belonging to the same type as the photovoltaic cell, and specifically may be a small cell obtained by cutting a photovoltaic cell used for preparing a photovoltaic module and/or a reference cell 11 used for preparing a reference photovoltaic module 1. The size of the sliced battery piece 13 may be set according to actual needs, and the size of the sliced battery piece 13 is not limited at all.
Of course, the packaging manner of the "single reference cell" (i.e. the sliced cell 13 is not disposed around the reference cell 11) may also be adopted for packaging, which is not limited in this application.
According to the photovoltaic power station environmental data acquisition equipment provided by the embodiment of the application, the connecting piece 2 can be a junction box or a Raymond connector.
The connection 2 for connecting the solder strip 12 and the measuring device can be in particular a junction box or a remo connector in order to facilitate the connection between the reference photovoltaic module 1 and the measuring device.
Referring to fig. 5, a schematic structural diagram of a measurement apparatus provided in an embodiment of the present application is shown. The photovoltaic power plant environmental data acquisition equipment that this application embodiment provided, measuring device can include:
a first resistor R1 for series connection with the reference photovoltaic module 1; wherein the resistance value of the first resistor R1 is smaller than a first threshold value;
a temperature detection circuit for acquiring the temperature of the reference photovoltaic module 1;
and the analog-to-digital conversion processor 31 is connected with two ends of the first resistor R1 and the temperature detection circuit and is used for converting the first voltage at two ends of the first resistor R1 and obtaining the irradiation intensity through the converted first voltage and temperature.
The measuring means may comprise a first resistor R1, a temperature sensing circuit, an analog to digital conversion processor 31.
Wherein the resistance value of the first resistor R1 is smaller than a first threshold value, so that the reference photovoltaic module 1 is approximately in a short circuit state, in particular, according to the IEC 60904-2 standard, the resistance value R of the first resistor R11Less than (0.03V)OC)/ISCWherein V isOCIs an open circuit voltage, ISCIs a short circuit current. The first resistor R1 is used to be connected in series with the reference photovoltaic module 1, i.e. the connection 2 on the reference photovoltaic module 1 is respectively connected to two ends of the first resistor R1 (specifically, the connection 2 on the reference photovoltaic module 1 is respectively connected to a + and a-in the figure);
the temperature detection circuit is used for acquiring the temperature of the reference photovoltaic module 1;
the analog-to-digital conversion processor 31 is connected with both ends of the first resistor R1 and the temperature detection circuit, and is used for acquiring the temperature T detected by the temperature detection circuitCAnd a first voltage V across a first resistor R11For the first voltage V1Performing analog-to-digital conversion to obtain digital signal, and then passing
Obtaining the irradiation intensity IrrWherein β is the temperature coefficient of short-circuit current, ISC.STCFor short-circuit current of the reference photovoltaic module 1 under STC condition (I can be obtained by measuring the reference photovoltaic module 1 under STC condition in advanceSC.STC)。
It should be noted that, in the embodiment of the present application, the calculation methods involved in the analog-to-digital conversion processor 31 are all what is already existed in the prior art, and the present application does not relate to the improvement of the calculation methods.
Referring to fig. 6, a schematic structural diagram of another measurement apparatus provided in the embodiments of the present application is shown. The photovoltaic power plant environmental data acquisition equipment that this application embodiment provided, temperature-detecting circuit can include:
a second resistor R2, a third resistor R3 for series connection with a second reference photovoltaic module 1; the sum of the resistance values of the second resistor R2 and the third resistor R3 is larger than a second threshold value;
the analog-to-digital conversion processor 31 is connected to two ends of the third resistor R3, and is configured to convert the second voltage across the third resistor R3, so as to obtain the temperature of the second reference photovoltaic module 1 through the converted second voltage.
The temperature detection circuit can comprise a second resistor R2 and a third resistor R3. Wherein, the resistance value R of the second resistor R22And a resistance value R of the third resistor R33The sum is greater than a second threshold value so that the reference photovoltaic module 1 connected to the temperature detection circuit is approximately in an open circuit state, in particular according to the IEC 60904-2 standard, R2+R3＞VOC/(ISC*0.0005). In addition, since the open-circuit voltage of the reference photovoltaic module 1 may be greater than the maximum voltage that the input terminal of the analog-to-digital conversion processor 31 can bear, so that the analog-to-digital conversion processor 31 cannot normally acquire the voltage to obtain the temperature, the second resistor R2 and the third resistor R3 provided herein may also function to convert the higher open-circuit voltage of the reference photovoltaic module 1 into the lower input voltage (i.e. V in the figure) of the analog-to-digital conversion processor 312) So that the analog-to-digital conversion processor 31 can normally perform voltage acquisition according to V2The temperature of the reference photovoltaic module 1 is acquired.
In addition, since the same reference photovoltaic module 1 cannot be in both the short-circuit state and the open-circuit state, the second resistor R2 and the third resistor R3 may be connected in series with another reference photovoltaic module 1 (i.e., a second reference photovoltaic module 1, wherein the second reference photovoltaic module 1 is the same as the reference photovoltaic module 1 for connection with the first resistor R1) (i.e., the second reference photovoltaic module 1 is connected with B + and B-in the figure).
At this time, the analog-to-digital conversion processor 31 is connected to the third resistor R3 for obtaining the second voltage V across the third resistor R32And for the second voltage V2Performing analog-to-digital conversion to obtain digital signal, and passing
Obtaining the temperature T of a second reference photovoltaic module 1CWherein α is the open circuit voltage temperature coefficient, VOC.STCOpen circuit voltage under STC condition for the second reference photovoltaic module 1 (V can be obtained by measuring the reference photovoltaic module 1 under STC condition in advanceOC.STC)。
It should be noted that if reference is made second to V of the photovoltaic module 1OC.STCLower than a third threshold (the third threshold may be V in particular)X/1.2, wherein VXThe maximum voltage that can be sustained by the input end of the analog-to-digital conversion processor 31), the second reference photovoltaic module 1 may be directly connected to the analog-to-digital conversion processor 31, that is, the second resistor R2 and the third resistor R3 may not be required to be provided, and in particular, refer to fig. 7, which shows a schematic structural diagram of another measurement apparatus provided in the embodiment of the present application, and at this time, the maximum voltage that can be sustained by the input end of the analog-to-digital conversion processor 31 may be passed throughObtaining the temperature T of a second reference photovoltaic module 1C。
It should be noted that, in the embodiment of the present application, the calculation methods involved in the analog-to-digital conversion processor 31 are all what is already existed in the prior art, and the present application does not relate to the improvement of the calculation methods.
According to the photovoltaic power station environmental data acquisition equipment provided by the embodiment of the application, the temperature detection circuit can be a temperature sensor.
In addition to obtaining the temperature of the reference photovoltaic module 1 by making the reference photovoltaic module 1 in an open circuit state, the temperature of the reference photovoltaic module 1 can be directly measured by a temperature sensor (i.e. directly using the temperature sensor as a temperature detection circuit), and the method has the characteristics of convenient measurement, high efficiency, simplicity and convenience, and the like.
According to the photovoltaic power station environmental data acquisition equipment provided by the embodiment of the application, the temperature sensor can be a PT100 temperature sensor.
The temperature sensor used may be specifically a PT100 temperature sensor, and of course, other types of temperature sensors may also be used to measure the temperature, which is not limited in this application.
The photovoltaic power plant environmental data acquisition equipment that this application embodiment provided can also include:
and the display device is connected with the measuring device and is used for displaying the irradiation intensity.
And a display device connected with the measuring device can be further arranged and used for displaying the irradiation intensity, so that workers in the photovoltaic power station can visually and conveniently acquire the irradiation intensity.
According to the photovoltaic power station environmental data acquisition equipment provided by the embodiment of the application, the display device can be an LED display screen.
The LED display screen can be used as a display device to display the irradiation intensity, and has the characteristics of high display brightness, long service life, stable performance and the like.
Of course, the irradiation intensity display may also be performed by using an LCD screen as a display device, which is not limited in this application.
The embodiment of the application also provides a photovoltaic power station, which can comprise any one of the photovoltaic power station environmental data acquisition equipment.
Because any kind of above-mentioned photovoltaic power plant environmental data acquisition equipment all can reduce the deviation between the irradiation intensity that measures and the effectual irradiation intensity that photovoltaic module received in the photovoltaic power plant, consequently, when applying any kind of above-mentioned photovoltaic power plant environmental data acquisition equipment to the photovoltaic power plant, all can reduce the influence that the irradiation intensity that measures caused to photovoltaic power plant behavior aassessment and analysis.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Furthermore, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include elements inherent in the list. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element. In addition, parts of the above technical solutions provided in the embodiments of the present application, which are consistent with the implementation principles of corresponding technical solutions in the prior art, are not described in detail so as to avoid redundant description.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the application. Thus, the present application is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (10)
1. A photovoltaic power plant environmental data acquisition device, comprising:
a reference cell and a solder strip connected with the reference cell are packaged inside, and a reference photovoltaic module with the same installation angle as that of a photovoltaic module contained in a photovoltaic power station is packaged inside, wherein the reference cell and the photovoltaic cell in the photovoltaic module are the same type of cell, and the packaging mode of the reference photovoltaic module is the same as that of the photovoltaic module;
the connecting piece is arranged on the back of the reference photovoltaic assembly and connected with the welding strip;
the measuring device is connected with the reference photovoltaic assembly through the connecting piece and used for measuring the short-circuit current and the temperature of the reference photovoltaic assembly so as to obtain the irradiation intensity.
2. The photovoltaic power plant environmental data acquisition device of claim 1, further comprising in the reference photovoltaic module:
the sliced battery pieces are arranged around the reference battery piece and are separated from the reference battery piece by a preset distance;
the sliced battery piece is in insulated connection with the welding strip, and the sliced battery piece is a small battery piece obtained by cutting a battery piece which belongs to the same type as the photovoltaic battery piece.
3. The photovoltaic power plant environmental data acquisition apparatus of claim 2 wherein the connection is a junction box or a remo connector.
4. The photovoltaic power plant environmental data acquisition apparatus of claim 1, wherein the measurement device comprises:
a first resistor for series connection with the reference photovoltaic component; wherein the resistance value of the first resistor is smaller than a first threshold value;
the temperature detection circuit is used for acquiring the temperature of the reference photovoltaic assembly;
and the analog-digital conversion processor is connected with the two ends of the first resistor and the temperature detection circuit and is used for converting first voltages at the two ends of the first resistor and obtaining the irradiation intensity through the converted first voltages and the temperature.
5. The photovoltaic power plant environmental data acquisition apparatus of claim 4, wherein the temperature detection circuit comprises:
a second resistor and a third resistor connected in series with a second reference photovoltaic module; the sum of the resistance values of the second resistor and the third resistor is greater than a second threshold value;
the analog-to-digital conversion processor is connected with two ends of the third resistor and used for converting second voltages at two ends of the third resistor so as to obtain the temperature of the second reference photovoltaic module through the converted second voltages.
6. The photovoltaic power plant environmental data acquisition device of claim 4, wherein the temperature detection circuit is a temperature sensor.
7. The photovoltaic power plant environmental data acquisition device of claim 6 wherein the temperature sensor is a PT100 temperature sensor.
8. The photovoltaic power plant environmental data acquisition device of claim 1, further comprising:
and the display device is connected with the measuring device and is used for displaying the irradiation intensity.
9. The photovoltaic power plant environmental data acquisition plant of claim 8 wherein the display device is an LED display screen.
10. A photovoltaic power plant characterized by comprising a photovoltaic power plant environmental data acquisition apparatus according to any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921472147.5U CN210120532U (en) | 2019-09-05 | 2019-09-05 | Photovoltaic power plant environmental data acquisition equipment and photovoltaic power plant |
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