CN108418547B - Solar outdoor power generation test system - Google Patents
Solar outdoor power generation test system Download PDFInfo
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- CN108418547B CN108418547B CN201810426181.2A CN201810426181A CN108418547B CN 108418547 B CN108418547 B CN 108418547B CN 201810426181 A CN201810426181 A CN 201810426181A CN 108418547 B CN108418547 B CN 108418547B
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- 238000010248 power generation Methods 0.000 title claims abstract description 83
- 238000012360 testing method Methods 0.000 title claims abstract description 32
- 230000007613 environmental effect Effects 0.000 claims abstract description 24
- 238000010438 heat treatment Methods 0.000 claims description 12
- 230000001012 protector Effects 0.000 claims description 3
- 230000005611 electricity Effects 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 238000004891 communication Methods 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 206010003694 Atrophy Diseases 0.000 description 1
- 230000037444 atrophy Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000000694 effects Effects 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
- 238000012544 monitoring process Methods 0.000 description 1
- 238000012858 packaging process Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 239000000523 sample Substances 0.000 description 1
- 238000005070 sampling Methods 0.000 description 1
- 238000004088 simulation Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
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- 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
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- 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
- H02S50/10—Testing of PV devices, e.g. of PV modules or single PV cells
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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 solar energy outdoor power generation test system includes: the irradiance meter is used for measuring solar irradiance on the surface of the photovoltaic module in the solar outdoor power generation device; the temperature measuring sensor is arranged on the backboard of the photovoltaic module and used for measuring the backboard temperature of the photovoltaic module; the environment information acquisition device is used for acquiring environment parameters of the environment where the photovoltaic module is located; the data acquisition device is used for storing solar irradiance, backboard temperature and environmental parameters; the data processor is connected with the data acquisition device and used for recording the power generation parameters of the photovoltaic module, calculating the power generation efficiency of the photovoltaic module, analyzing the relation between the power generation parameters, solar irradiance and environmental parameters by using the comparison graph, wherein the power generation parameters comprise the output voltage, the output current and the output power of the photovoltaic module. According to the solar outdoor power generation testing system provided by the invention, the environmental factors and the back plate temperature are used as partial factors for measuring the performance of the photovoltaic module, and the power generation performance of the photovoltaic module is comprehensively detected.
Description
Technical Field
The present disclosure relates generally to the field of solar power generation, and in particular to a solar outdoor power generation testing system.
Background
Along with the continuous atrophy of the traditional energy, the solar energy has the advantages of environmental protection, wide distribution, sustainable utilization and the like. Has become a hotspot for development and research in various countries. Among them, photovoltaic power generation is an important aspect of the solar energy application field.
The current photovoltaic power generation test system obtains the attenuation trend of the power generation efficiency by measuring the solar irradiation intensity of the surface of the photovoltaic module, the temperature of the photovoltaic module and the power generation power of the photovoltaic module, and further obtains the power generation condition of the photovoltaic power generation system. In addition, the photovoltaic power generation testing system applied to outdoor solar energy is not common at present, and the photovoltaic power generation testing system mainly adopts simulation in a laboratory.
The prior art cannot meet the comprehensive detection of the power generation performance of the outdoor photovoltaic product, does not consider environmental factors (such as humidity, temperature and the like), the photovoltaic product and the back plate temperature of the measuring device, and has low accuracy of the detection result of the power generation performance of the photovoltaic power generation product.
Disclosure of Invention
In view of the foregoing drawbacks or shortcomings in the prior art, it is desirable to provide a solar outdoor power generation testing system.
The invention provides a solar outdoor power generation test system, which comprises:
the irradiance meter is used for measuring solar irradiance on the surface of the photovoltaic module in the solar outdoor power generation device;
the temperature measuring sensor is arranged on the backboard of the photovoltaic module and used for measuring the backboard temperature of the photovoltaic module;
the environment information acquisition device is used for acquiring environment parameters of the environment where the photovoltaic module is located;
the data collector is used for storing the solar irradiance, the back plate temperature and the environmental parameters;
and the data processor is connected with the data acquisition device and is used for recording the power generation parameters of the photovoltaic module, calculating the power generation efficiency of the photovoltaic module, analyzing the relation between the power generation parameters, the solar irradiance and the environmental parameters by using the comparison graph, and the power generation parameters comprise the output voltage, the output current and the output power of the photovoltaic module.
Further, the comparison graph includes: solar irradiance, output voltage, output current, output power versus time.
Further, the environmental information collection device includes a temperature sensor for collecting environmental temperature, and the contrast map includes: ambient temperature, back plate temperature, output voltage, output current, output power versus time plot; and/or the number of the groups of groups,
the environmental information acquisition device includes the wind speed sensor that is used for gathering the wind speed, the contrast map includes: wind speed, output voltage, output current, output power versus time graph; and/or the number of the groups of groups,
the environmental information acquisition device includes the wind direction sensor that is used for gathering the wind direction, the contrast map includes: wind direction, output voltage, output current, output power versus time plot; and/or the number of the groups of groups,
the environmental information acquisition device includes the humidity transducer that is used for gathering ambient humidity, the contrast map includes: ambient humidity, output voltage, output current, output power versus time graph.
Further, the temperature sensor includes a thermocouple sensor or a thermal resistance sensor.
Further, the solar outdoor power generation test system further includes: the acquisition box is used for installing the data acquisition device;
the collecting box is internally provided with a first voltage transmitter, a second voltage transmitter, a current transmitter, a charging controller and a storage battery, wherein the measuring range of the first voltage transmitter is smaller than that of the second voltage transmitter;
the photovoltaic module is connected with the charging controller, the first voltage transmitter, the second voltage transmitter and the current transmitter, and the charging controller is respectively connected with the first voltage transmitter, the second voltage transmitter, the current transmitter and the storage battery; the first voltage transmitter, the second voltage transmitter, the current transmitter and the charging controller are respectively connected with the data acquisition unit; and a change-over switch connected with the first voltage transmitter and the second voltage transmitter is arranged on the collecting box.
Further, the surface of the collection box is provided with a six-core aviation plug used for being connected with a power supply and a four-core aviation plug used for supplying power to the environment information collection device, the six-core aviation plug comprises a 5V voltage positive and negative terminal, a 12V voltage positive and negative terminal and a 24V voltage positive and negative terminal, and the four-core aviation plug is connected with the 5V voltage positive and negative terminal and the 12V voltage positive and negative terminal through wires;
the collecting box is provided with a two-core aviation plug, the positive output end of the two-core aviation plug is connected with the positive input end of the current transmitter, the negative output end of the two-core aviation plug is connected with the charging controller in series, the negative end of the charging controller is connected with the negative input end of the current transmitter, the negative output end of the charging controller is also connected with the change-over switch, the change-over switch is connected with the positive input end of the first voltage transmitter or the positive input end of the second voltage transmitter, and the negative end of the charging controller is respectively connected with the negative input end of the first voltage transmitter and the negative input end of the second voltage transmitter;
the positive and negative ends of the power supplies of the first voltage transmitter, the second voltage transmitter and the current transmitter are respectively connected with the positive and negative ends of 24V voltage, and the positive and negative ends of the power supplies of the data acquisition device are respectively connected with the positive and negative ends of 12V voltage;
the signal output end of each transmitter is connected with the analog channel input end of the data acquisition device; the environment information acquisition device is connected with a 485 interface of the data acquisition device through a universal bus; the temperature measuring sensor is connected with the analog channel input end of the data acquisition device.
Further, a first light emitting diode is connected with a 5V voltage positive end and a 5V voltage negative end, a second light emitting diode is connected with a 12V voltage positive end and a 12V voltage negative end, and a third light emitting diode is connected with a 24V voltage positive end and a 24V voltage negative end.
Further, a five-core aviation plug used for being connected with the RS-232/485 interface converter is further arranged on the collecting box, the five-core aviation plug is connected with a 5V voltage positive terminal and a 5V voltage negative terminal through a wire, and the five-core aviation plug is further connected with the charging protector and the data collector through a universal bus.
Further, a heating module and a temperature control switch connected with the heating module are further arranged in the collecting box in series, one end of the heating module, deviating from the temperature control switch, is connected with a 24V voltage negative end, and one end of the temperature control switch, deviating from the temperature control switch, is connected with a 24V voltage positive end.
Further, the data collector comprises a paperless recorder.
The solar outdoor power generation testing system provided by the invention is used for testing the power generation parameters (output voltage, output current and output power) of the photovoltaic module, and measuring the relation between the power generation parameters, solar irradiance and environmental factors; a thermocouple sensor or a thermal resistance sensor is exemplarily arranged, and the temperature of the photovoltaic module in the power generation process is monitored in real time.
Drawings
Other features, objects and advantages of the present application will become more apparent upon reading of the detailed description of non-limiting embodiments, made with reference to the following drawings, in which:
fig. 1 is a schematic structural diagram of a solar outdoor power generation test system according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of a collection box according to an embodiment of the present invention;
fig. 3 is a schematic structural diagram of another solar outdoor power generation testing system according to an embodiment of the present invention;
fig. 4 is a schematic structural diagram of a solar outdoor power generation test system applied to different photovoltaic modules according to an embodiment of the present invention.
Detailed Description
The present application is described in further detail below with reference to the drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting of the invention. It should be noted that, for convenience of description, only the portions related to the invention are shown in the drawings.
It should be noted that, in the case of no conflict, the embodiments and features in the embodiments may be combined with each other. The present application will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.
Referring to fig. 1, an embodiment of the invention provides a solar power generation testing system, including:
the irradiance meter 1 is used for measuring solar irradiance on the surface of a photovoltaic module in the solar outdoor power generation device;
the temperature measuring sensor 2 is arranged on the backboard of the photovoltaic module and is used for measuring the backboard temperature of the photovoltaic module;
the environment information acquisition device 3 is used for acquiring environment parameters of the environment where the photovoltaic module is located, wherein the environment parameters comprise one or more of temperature, humidity, wind speed and wind direction;
the data collector 4 is used for storing the solar irradiance, the back plate temperature and the environmental parameters;
the data processor 5 is connected to the data collector, and is configured to record a power generation parameter of the photovoltaic module, calculate a power generation efficiency of the photovoltaic module, and analyze a relationship between the power generation parameter and the solar irradiance as well as between the power generation parameter and the environmental parameter by using a comparison chart, where the power generation parameter includes an output voltage, an output current and an output power of the photovoltaic module.
The solar irradiance on the surface of the photovoltaic module is tested through an irradiance meter, the environment information acquisition device is used for acquiring environment parameters (such as one or more of environment temperature, humidity, wind speed and wind direction) around the photovoltaic module, the data acquisition device stores the power generation parameters, solar irradiance, environment parameters and backboard temperature of the photovoltaic module, the power generation efficiency of the photovoltaic module is calculated, and the relation between the power generation parameters, solar irradiance and environment parameters of the photovoltaic module is analyzed.
For example, the actual power generation efficiency of the module can be calculated from the irradiance, the module area, and the output, and the power generation efficiency=output/(irradiance×module area) ×100%.
Further, the comparison graph includes: solar irradiance, output voltage, output current, output power versus time. And analyzing the relation between the power generation parameters of the photovoltaic module and the solar irradiance by taking time as an abscissa and taking solar irradiance, output voltage, output current and output power as an ordinate.
Further, the environmental information collection device includes a temperature sensor for collecting environmental temperature, and the contrast map includes: ambient temperature, back plate temperature, output voltage, output current, output power versus time. Analyzing the relation between the power generation parameters and the temperature of the photovoltaic module and/or analyzing the relation between the power generation parameters and the temperature of the photovoltaic module by taking time as an abscissa and taking the environment temperature, the back plate temperature, the output voltage, the output current and the output power as an ordinate,
the environmental information acquisition device includes the wind speed sensor that is used for gathering the wind speed, the contrast map includes: wind speed, output voltage, output current, output power versus time graph. Analyzing the relation between the power generation parameters of the photovoltaic module and the wind speed, and/or,
the environmental information acquisition device includes the wind direction sensor that is used for gathering the wind direction, the contrast map includes: wind direction, output voltage, output current, output power versus time graph. Analyzing the relation between the power generation parameters of the photovoltaic module and the wind speed and/or the relation between the wind direction, the output voltage, the output current and the output power are/is taken as an abscissa and a time is taken as an ordinate,
the environmental information acquisition device includes the humidity transducer that is used for gathering ambient humidity, the contrast map includes: ambient humidity, output voltage, output current, output power versus time graph. The time is taken as an abscissa, the environment humidity, the output voltage, the output current and the output power are taken as an ordinate, and the relationship between the power generation parameters of the photovoltaic module and the environment humidity is analyzed, so that the influence of different water blocking films on the waterproof property in the packaging process of the photovoltaic module can be evaluated.
The optimal environment information acquisition device comprises a mounting bracket which is arranged near the photovoltaic module, a temperature sensor, a humidity sensor, a wind speed sensor and a wind direction sensor are arranged on the mounting bracket, the temperature, the humidity, the wind speed and the wind direction of the environment where the photovoltaic module is positioned are obtained, the data acquisition device obtains the information parameters and provides the information parameters for the data processor, and the information parameters are used as factors for analyzing and measuring the solar power generation performance, so that the accuracy of a power generation test result is improved.
In this embodiment, the data collector is preferably a paperless recorder, and is used to collect and store the above parameters. The data processor can be a remote computer, the data collector is in communication connection with the data processor, the data collector and the data processor can be in communication through a wired or wireless network, and the parameters recorded by the data collector are used for the data processor to analyze the power generation performance of the photovoltaic module.
Further, the temperature measuring sensor comprises a thermocouple sensor or a thermal resistance sensor, so that heat generated in the power generation process of the photovoltaic module can be measured directly, for example, the thermal resistance sensor is a Pt100 temperature sensor, the installation is convenient, and the change of the temperature of the backboard can be collected in real time. The photovoltaic module can generate heat and heat when generating electricity, and voltage, current and power coefficients exist in the photovoltaic module, so that the temperature change can influence the electricity generation effect, a probe of a thermocouple sensor or a thermal resistance sensor is attached to the central position of a backboard of the photovoltaic module, the temperature of the photovoltaic module is monitored, and the temperature is used as a factor for analyzing and measuring the solar electricity generation performance, so that the accuracy of a electricity generation test result is improved.
Further, as shown in fig. 2, the solar outdoor power generation test system further includes: the acquisition box is used for installing the data acquisition device;
a charging controller 6, a storage battery 7, a current transmitter 8, a first voltage transmitter 9 and a second voltage transmitter 10 are also arranged in the collecting box, and the measuring range (for example, 10V) of the first voltage transmitter 9 is smaller than the measuring range (for example, 100V) of the second voltage transmitter 10;
the photovoltaic module is connected with the charging controller 6, the first voltage transmitter 9, the second voltage transmitter 10 and the current transmitter 8, and the charging controller 6 is respectively connected with the first voltage transmitter 9, the second voltage transmitter 10, the current transmitter 8 and the storage battery 7; the first voltage transmitter 9, the second voltage transmitter 10, the current transmitter 8 and the charging controller 6 are respectively connected with the data collector 5; the collection box is provided with a change-over switch 11 connected with the first voltage transmitter 9 and the second voltage transmitter 10.
Further, a six-core aviation plug 13 for connecting a power supply and a four-core aviation plug 14 for supplying power to the environment information acquisition device are arranged on the surface of the acquisition box, the six-core aviation plug 13 comprises a 5V voltage positive and negative terminal, a 12V voltage positive and negative terminal and a 24V voltage positive and negative terminal, and the four-core aviation plug 14 is connected with the 5V voltage positive and negative terminal and the 12V voltage positive and negative terminal through wires;
the collecting box is provided with a two-core aviation plug 15, the positive output end of the two-core aviation plug 15 is connected with the positive input end of the current transmitter 8, the negative output end of the two-core aviation plug 15 is connected with the charging controller 6 in series, the negative end of the charging controller is connected with the negative input end of the current transmitter, the negative output end of the charging controller 6 is also connected with the change-over switch 11, the change-over switch 11 is connected with the positive input end of the first voltage transmitter 9 or the positive input end of the second voltage transmitter 10, and the negative end of the charging controller 6 is respectively connected with the negative input end of the first voltage transmitter 9 and the negative input end of the second voltage transmitter 10;
the positive and negative ends of the power supplies of the first voltage transmitter, the second voltage transmitter and the current transmitter are respectively connected with the positive and negative ends of 24V voltage, and the positive and negative ends of the power supplies of the data acquisition device are respectively connected with the positive and negative ends of 12V voltage;
the signal output end of each transmitter is connected with the analog channel input end of the data acquisition device; the environment information acquisition device is connected with a 485 interface of the data acquisition device through a universal bus; the temperature measuring sensor is connected with the analog channel input end of the data acquisition device.
For example, the photovoltaic module without the RS232 interface is connected with a two-core aviation plug, and corresponds to the voltage and the current of the photovoltaic module to be converted into a direct-current voltage analog signal and a direct-current analog signal to be output by the charging controller, the current transducer, the first voltage transducer and the second voltage transducer, and the direct-current voltage analog signal is transmitted to an analog signal input end of the paper recorder.
For example, the output voltage of the photovoltaic modules after being connected in series can be determined to be lower than 10V, and a first voltage transmitter is selected; if the output voltage of the photovoltaic modules after being connected in series is determined to be between 10 and 90V, a second voltage transmitter is selected; if the output voltage of the photovoltaic modules after being connected in series is not determined, a second voltage transmitter can be selected.
Further, a first light emitting diode 16 is connected to the 5V positive voltage end and the 5V negative voltage end, a second light emitting diode 17 is connected to the 12V positive voltage end and the 12V negative voltage end, and a third light emitting diode 18 is connected to the 24V positive voltage end and the 24V negative voltage end. The first LED is an indicator lamp with 5V power supply, the second LED is an indicator lamp with 12V power supply, and the third LED is an indicator lamp with 24V power supply, which are respectively used for indicating normal power supply of each voltage end.
Further, a heating module 19 and a temperature control switch 20 connected with the heating module in series are further arranged in the collecting box, one end of the heating module, which is away from the temperature control switch, is connected with a 24V voltage negative end, and one end of the temperature control switch, which is away from the temperature control switch, is connected with a 24V voltage positive end.
Because the working temperature range of the data collector (such as a paperless recorder) is 0-50 ℃, and the outdoor temperature is lower than 0 ℃ in winter, the data collector cannot work normally, and the heating module is used for heating the collecting box. The temperature control switch is used for monitoring the temperature in the collecting box, so that the temperature can be kept within a set temperature range, and heating is automatically stopped after overtemperature.
The power generation test system provided by the embodiment is applicable to a photovoltaic module without an RS232 interface and can be connected with a two-core aviation plug.
As shown in fig. 3, the power generation test system provided in this embodiment is applicable to a photovoltaic module having an RS232 interface. On the basis of the embodiment, the five-core aviation plug used for being connected with the RS-232/485 interface converter is further arranged on the collecting box, the five-core aviation plug is connected with the positive end and the negative end of 5V voltage through a wire, and the five-core aviation plug is further connected with the charging protector and the data collector through a universal bus.
In the implementation, the photovoltaic module is provided with an RS232 interface, and the RS232 interface of the photovoltaic module is connected with a five-core aviation plug through an RS-232/485 interface converter 12 and then is connected with the RS485 interface of the collector through a universal bus.
Further, in order to ensure that the photovoltaic module can fully absorb sunlight, the solar outdoor power generation testing system provided by any embodiment of the invention comprises a sun tracking system, wherein the sun tracking system comprises a double-shaft solar tracking device for supporting the photovoltaic module, the double-shaft solar tracking device comprises a mounting frame for mounting the photovoltaic module and an irradiance meter, and a sun tracking sensor is arranged on the mounting frame.
As an preferable implementation manner, the dual-axis solar tracking device provided in this embodiment further includes a sun-tracking controller based on STM32, where the sun-tracking controller is connected to the sun-tracking sensor and two motors (to realize horizontal rotation and vertical pitching of the photovoltaic module) that drive the mounting frame to rotate, and the sun-tracking controller, the sun-tracking sensor and the motors are all connected to the power supply device. The power supply of the sun tracking system is connected with the positive terminal and the negative terminal of the 24V voltage.
The sun tracking sensor is used for collecting sun position signals and feeding the sun position signals back to the sun tracking controller, and the sun tracking controller drives the mounting bracket to rotate, so that the photovoltaic module is opposite to the sun at any time under the condition of illumination, the power generation efficiency of the photovoltaic module is improved, the accumulated power generation amount is improved, and the accuracy of a test result of the power generation test system is further improved.
For example, the accumulated power generation amount is calculated by the data processor, the accumulated power generation amount=output power×accumulated acquisition time, for example, the sampling parameter is set to be acquired every 5 seconds, the acquired output power is 120W, and the accumulated power generation amount is 120×5=600wh.
Because the photovoltaic modules have more specifications and different power generation powers, the solar power generation test system is preferably provided with the collection box shown in fig. 2.
For example, a plurality of double-shaft solar tracking devices are arranged side by side or in an array, a photovoltaic module, an irradiance meter, a sun tracking controller, a sun tracking sensor and a motor are arranged on a mounting frame included in the double-shaft solar tracking devices, the photovoltaic modules distributed side by side or in an array are correspondingly obtained, an environment information acquisition device is arranged in an area where the photovoltaic modules are located, and the environment information acquisition device is connected with a paper recorder.
As shown in fig. 4, for example, a photovoltaic module includes: a first photovoltaic module without an RS232 interface and a second photovoltaic module with an RS232 interface. The output end of the first photovoltaic module is respectively connected with the input ends of the voltage transmitter (the first voltage transmitter or the second voltage transmitter) and the current transmitter, and is further connected with the analog signal input end of the paper recorder. And connecting the second photovoltaic module with the paper recorder by using an RS232/485 interface converter.
For example, two types of photovoltaic modules (such as a first photovoltaic module and a second photovoltaic module) are arranged in a region in a concentrated manner to generate electricity, an irradiance meter is arranged on any mounting frame to collect solar irradiance, an environment information collecting device is arranged nearby the region, a first temperature sensor is arranged on a back plate of the first photovoltaic module, a second temperature sensor is arranged on a back plate of the second photovoltaic module, and the irradiance meter, the environment information collecting device, the first temperature sensor and the second temperature sensor are connected with a data collector.
The foregoing description is only of the preferred embodiments of the present application and is presented as a description of the principles of the technology being utilized. It will be appreciated by persons skilled in the art that the scope of the invention referred to in this application is not limited to the specific combinations of features described above, but also covers other technical solutions which may be formed by any combination of the features described above or their equivalents without departing from the inventive concept. Such as the above-described features and technical features having similar functions (but not limited to) disclosed in the present application are replaced with each other.
Claims (6)
1. A solar outdoor power generation testing system, comprising: the irradiance meter is used for measuring solar irradiance on the surface of the photovoltaic module in the solar outdoor power generation device; the temperature measuring sensor is arranged on the backboard of the photovoltaic module and used for measuring the backboard temperature of the photovoltaic module; the environment information acquisition device is used for acquiring environment parameters of the environment where the photovoltaic module is located; the data collector is used for storing the solar irradiance, the back plate temperature and the environmental parameters; the data processor is connected with the data acquisition device and used for recording the power generation parameters of the photovoltaic module, calculating the power generation efficiency of the photovoltaic module, analyzing the relation between the power generation parameters, the solar irradiance and the environmental parameters by using a comparison chart, wherein the power generation parameters comprise the output voltage, the output current and the output power of the photovoltaic module;
the comparison graph comprises: solar irradiance, output voltage, output current, output power versus time;
the environmental information acquisition device includes the temperature sensor that is used for gathering ambient temperature, the contrast map includes: ambient temperature, back plate temperature, output voltage, output current, output power versus time plot; and/or, the environment information acquisition device comprises a wind speed sensor for acquiring wind speed, and the contrast graph comprises: wind speed, output voltage, output current, output power versus time graph; and/or, the environmental information acquisition device comprises a wind direction sensor for acquiring wind direction, and the contrast graph comprises: wind direction, output voltage, output current, output power versus time plot; and/or, the environment information acquisition device comprises a humidity sensor for acquiring environment humidity, and the contrast graph comprises: ambient humidity, output voltage, output current, output power versus time plot;
the temperature measuring sensor comprises a thermocouple sensor or a thermal resistance sensor;
further comprises: the acquisition box is used for installing the data acquisition device; the collecting box is internally provided with a first voltage transmitter, a second voltage transmitter, a current transmitter, a charging controller and a storage battery, wherein the measuring range of the first voltage transmitter is smaller than that of the second voltage transmitter; the photovoltaic module is connected with the charging controller, the first voltage transmitter, the second voltage transmitter and the current transmitter, and the charging controller is respectively connected with the first voltage transmitter, the second voltage transmitter, the current transmitter and the storage battery; the first voltage transmitter, the second voltage transmitter, the current transmitter and the charging controller are respectively connected with the data acquisition unit; and a change-over switch connected with the first voltage transmitter and the second voltage transmitter is arranged on the collecting box.
2. The solar outdoor power generation test system according to claim 1, wherein the surface of the collection box is provided with a six-core aviation plug for connecting a power supply source and a four-core aviation plug for supplying power to the environment information collection device, the six-core aviation plug comprises a 5V voltage positive and negative terminal, a 12V voltage positive and negative terminal and a 24V voltage positive and negative terminal, and the four-core aviation plug is connected with the 5V voltage positive and negative terminal and the 12V voltage positive and negative terminal through wires; the collecting box is provided with a two-core aviation plug, the positive output end of the two-core aviation plug is connected with the positive input end of the current transmitter, the negative output end of the two-core aviation plug is connected with the charging controller in series, the negative end of the charging controller is connected with the negative input end of the current transmitter, the negative output end of the charging controller is also connected with the change-over switch, the change-over switch is connected with the positive input end of the first voltage transmitter or the positive input end of the second voltage transmitter, and the negative end of the charging controller is respectively connected with the negative input end of the first voltage transmitter and the negative input end of the second voltage transmitter; the positive and negative ends of the power supplies of the first voltage transmitter, the second voltage transmitter and the current transmitter are respectively connected with the positive and negative ends of 24V voltage, and the positive and negative ends of the power supplies of the data acquisition device are respectively connected with the positive and negative ends of 12V voltage; the signal output end of each transmitter is connected with the analog channel input end of the data acquisition device; the environment information acquisition device is connected with a 485 interface of the data acquisition device through a universal bus; the temperature measuring sensor is connected with the analog channel input end of the data acquisition device.
3. The solar outdoor power generation test system of claim 2, wherein a 5V positive voltage terminal and a 5V negative voltage terminal are connected with a first light emitting diode, a 12V positive voltage terminal and a 12V negative voltage terminal are connected with a second light emitting diode, and a 24V positive voltage terminal and a 24V negative voltage terminal are connected with a third light emitting diode.
4. The solar outdoor power generation test system according to claim 2, wherein the collecting box is further provided with a five-core aviation plug used for being connected with the RS-232/485 interface converter, the five-core aviation plug is connected with a 5V voltage positive terminal and a 5V voltage negative terminal through a wire, and the five-core aviation plug is further connected with a charging protector and the data collector through a universal bus.
5. The solar outdoor power generation test system according to claim 2, wherein a heating module and a temperature control switch connected with the heating module are further arranged in the collecting box in series, one end of the heating module, which is away from the temperature control switch, is connected with a negative 24V voltage end, and one end of the temperature control switch, which is away from the temperature control switch, is connected with a positive 24V voltage end.
6. The solar power generation testing system of any of claims 1-5, wherein the data collector comprises a paperless recorder.
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| CN110138336A (en) * | 2019-06-25 | 2019-08-16 | 佛山职业技术学院 | A kind of electrical performance testing instrument based on photovoltaic module |
| CN111431482B (en) * | 2020-04-09 | 2021-03-16 | 武汉美格科技股份有限公司 | Solar power generation assembly testing device |
| CN114252782B (en) * | 2021-11-05 | 2024-01-26 | 中国航发南方工业有限公司 | Integrated on-line monitoring device |
| CN116208090A (en) * | 2022-12-02 | 2023-06-02 | 国电环境保护研究院有限公司 | Photovoltaic power generation demonstration platform system |
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