CN111537026B - Method and device for verifying vertical installation reliability of double-sided assembly - Google Patents
Method and device for verifying vertical installation reliability of double-sided assembly Download PDFInfo
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- CN111537026B CN111537026B CN202010449983.2A CN202010449983A CN111537026B CN 111537026 B CN111537026 B CN 111537026B CN 202010449983 A CN202010449983 A CN 202010449983A CN 111537026 B CN111537026 B CN 111537026B
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- 238000009434 installation Methods 0.000 title claims abstract description 49
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- 238000012795 verification Methods 0.000 claims abstract description 40
- 238000009529 body temperature measurement Methods 0.000 claims abstract description 24
- 239000011324 bead Substances 0.000 claims description 27
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- 238000010248 power generation Methods 0.000 description 4
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
- G01D21/00—Measuring or testing not otherwise provided for
- G01D21/02—Measuring two or more variables by means not covered by a single other subclass
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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 invention discloses a method and a device for verifying the vertical installation reliability of a double-sided assembly, wherein the verification method comprises the following steps: a verification device is arranged on the double-sided component, a thermocouple temperature measuring line, a photosensitive sensor, a light source and a strain gauge of the device are respectively arranged on the double-sided component, and then temperature change data, surface deformation data and wind pressure data on the double-sided component are respectively measured by the thermocouple temperature measuring line, the photosensitive sensor and the strain gauge and are transmitted to an industrial personal computer through a data acquisition unit; and the alternating current distribution box and the photovoltaic inverter respectively transmit the generated energy data of the photovoltaic power supply generated by the photovoltaic module to the industrial personal computer. According to the verification method, the thermocouple temperature measurement line is adopted to directly acquire real-time temperature change of the surface of the component, verification operation is simplified, the strain gauge, the photosensitive sensor, the photovoltaic inverter and the alternating current distribution box are utilized to respectively monitor wind pressure, component surface deformation and generated energy data of the double-sided component in the open air in real time, and reliability verification accuracy is improved.
Description
Technical Field
The invention relates to the technical field of photovoltaic module installation and detection, in particular to a method and a device for verifying vertical installation reliability of a double-sided module.
Background
The double-sided component is a photovoltaic component formed by crystalline silicon solar cells capable of generating power when both sides of the photovoltaic component receive light, and the generated energy of the double-sided component is more than that of a conventional single-sided component. The installation mode is diversified, can be vertical, can incline, thereby produces many new utilization modes, such as greenhouse, highway rail, sunshine room, curtain etc.. In practical use, the photovoltaic module needs to be subjected to reliability test, and the conventional reliability test technology and equipment are carried out based on the conventional module application direction, so that the test for vertical installation modes and application is less.
In the prior art, a method for detecting reliability of a photovoltaic module with application number CN201910873946.1 includes the following steps: s1, removing a component diode, and arranging a thermocouple on the back plate surface; s2, externally connecting a direct current power supply to the component, introducing reverse current which is 1.5-2.5 times of short-circuit current of the component in a constant current mode so as to generate temperature required by testing, keeping the temperature for more than 10min, and recording the current value and the voltage value of the power supply; s3, switching the circuit to a constant voltage mode, keeping the voltage value recorded in the step S2 for 10min to maintain stability; s4, loading dynamic mechanical load of the front 2400PA on the assembly, maintaining the dynamic mechanical load for not less than 24h, and continuously recording the power supply current value in the period; and S5, if the current value fluctuation is less than or equal to 3 percent in the period, the high-temperature mechanical load test of the assembly is qualified, otherwise, the assembly is unqualified. When the surface temperature of the photovoltaic module is detected, the diode of the module is removed, then the thermocouple is installed, and then the temperature detection is carried out.
Therefore, it is highly desirable to develop a method and an apparatus for verifying reliability, which are simple in verification operation and can monitor the outdoor wind pressure, temperature change, surface deformation of components and power generation capacity of the vertically-mounted double-sided components in real time.
Disclosure of Invention
The invention aims to provide a method and a device for verifying the vertical installation reliability of a double-sided component, aiming at the defects, the verification method adopts a thermocouple temperature measuring wire with one end short-circuited and then is pasted on the outer surface of a photovoltaic component, then a data collector is used for directly collecting the real-time temperature change of the surface of the double-sided component, the verification operation is simplified, and a strain gauge, a photosensitive sensor, a photovoltaic inverter and an alternating current distribution box are used for respectively monitoring the wind pressure, the component surface deformation and the generated energy data of the double-sided component in the open air in real time, so that the accuracy of the reliability verification is improved.
The technical scheme is as follows:
a method for verifying vertical installation reliability of a double-faced assembly comprises the following steps:
(1) the double-sided assembly vertical installation reliability verification device is arranged on a vertically installed double-sided assembly and comprises a strain gauge, a photosensitive sensor, a light source, a thermocouple temperature measurement line, a data acquisition device, an industrial personal computer, a photovoltaic inverter and an alternating current distribution box, wherein the double-sided assembly comprises a photovoltaic assembly and an assembly installation frame, and the photovoltaic assembly is installed on two stand columns through the assembly installation frame;
(2) the two electric cores at one end of the thermocouple temperature measuring wire are adhered to the surface of the photovoltaic assembly in a short circuit mode, the surface temperature change signal of the photovoltaic assembly is converted into an electromotive force signal by the thermocouple temperature measuring wire and transmitted to the data acquisition unit, and the electromotive force signal is converted into temperature change data by the data acquisition unit and transmitted to the industrial personal computer;
(3) the photosensitive sensor and the light source are respectively arranged on two opposite sides of the component mounting frame, when the surface of the photovoltaic component deforms, the deformation blocks light rays emitted from the light source to the photosensitive sensor, so that the current value transmitted to the data collector by the photosensitive sensor is reduced, and the data collector converts the current change value into double-sided component surface deformation data and transmits the double-sided component surface deformation data to the industrial personal computer;
(4) the strain gauge is arranged on the component mounting frame, under the action of outdoor wind power, a resistance change value caused by strain of the double-sided component is measured by the strain gauge and converted into a voltage change value to be transmitted to the data acquisition unit, and the data acquisition unit converts the voltage change value into wind pressure data borne by the double-sided component to be transmitted to the industrial personal computer;
(5) under the illumination condition, the photovoltaic module sequentially transmits the generated photovoltaic power supply to the photovoltaic inverter and the alternating current distribution box, and the alternating current distribution box and the photovoltaic inverter respectively transmit the generated energy data of the photovoltaic power supply to the industrial personal computer;
(6) and the industrial personal computer uploads the wind pressure data, the temperature change data, the surface deformation data and the generated energy data monitored from the double-sided component to the cloud server.
The photosensitive sensor comprises a plurality of photosensitive resistors, the photosensitive resistors are connected in series, the light source comprises a plurality of lamp beads, the lamp beads and the photosensitive resistors correspond to form a plurality of light connecting lines, and the light connecting lines are sequentially and gradually far away from the outer surface of the photovoltaic module; when the deformation of the photovoltaic module is larger, the more light rays blocked by the deformation are, the larger the resistance value of the photosensitive resistor is, the lower the current value transmitted to the data acquisition unit by the photosensitive sensor is, and the data acquisition unit acquires surface deformation data of the photovoltaic module according to a relation program of the current change and the deformation value.
A double-sided assembly vertical installation reliability verification device for implementing the verification method comprises a strain gauge, a photosensitive sensor, a light source, a thermocouple temperature measuring line, a data acquisition unit, an industrial personal computer, a photovoltaic inverter and an alternating current distribution box, wherein the strain gauge is arranged on the outer surface of the vertically installed double-sided assembly, the double-sided assembly comprises a photovoltaic assembly and an assembly installation frame, two battery cores at one end of the thermocouple temperature measuring line are in short circuit and are adhered to the outer surface of the photovoltaic assembly, the photosensitive sensor and the light source are respectively installed on two opposite sides of the assembly installation frame, and the other ends of the strain gauge, the photosensitive sensor, the light source and the thermocouple temperature measuring line are respectively and electrically connected with the data acquisition unit; the power output end of the photovoltaic module is sequentially electrically connected with the photovoltaic inverter and the alternating current distribution box, and the data collector, the photovoltaic inverter and the alternating current distribution box are respectively in signal connection with the industrial personal computer.
The photovoltaic module comprises a photovoltaic module, a plurality of thermoelectric couple temperature measurement lines, a plurality of temperature measurement points are arranged on the surface of the photovoltaic module, the number of the temperature measurement points corresponds to that of the thermoelectric couple temperature measurement lines, two battery cores at one end of each thermoelectric couple temperature measurement line are in short circuit and are adhered to each temperature measurement point, and the other end of each thermoelectric couple temperature measurement line is electrically connected with the data collector.
The number of the strain gauges is multiple, and the multiple strain gauges are respectively arranged on the component mounting frame and are respectively electrically connected with the data acquisition unit.
AC distribution box includes box, circuit breaker, the multi-functional electric energy meter of electronic type are installed respectively in the box, photovoltaic inverter loops through circuit breaker, the multi-functional electric energy meter of electronic type are connected with the electric wire netting electricity, AC distribution box passes through the multi-functional electric energy meter of electronic type with industrial computer signal connection.
The photosensitive sensor comprises a plurality of photosensitive resistors which are connected in series, the light source comprises a plurality of lamp beads, the number of the photosensitive resistors corresponds to that of the lamp beads, the photosensitive resistors and the lamp beads are sequentially and gradually far away from two opposite sides of the component mounting frame respectively, and light connecting lines formed between the lamp beads and the photosensitive resistors are parallel to the surface of the photovoltaic component respectively.
The industrial personal computer is in communication connection with the cloud server.
The industrial personal computer is provided with a VGA interface and is in signal connection with the display.
The following illustrates the advantages or principles of the invention:
1. the invention provides a method for verifying the vertical installation reliability of a double-sided assembly, which is characterized in that a double-sided assembly vertical installation reliability verifying device is arranged on the vertically installed double-sided assembly, the verifying device comprises a strain gauge, a photosensitive sensor, a light source, a thermocouple temperature measuring line, a data collector, an industrial personal computer, a photovoltaic inverter and an alternating current distribution box, when in operation, two electric cores at one end of the thermocouple temperature measuring line are in short circuit to form a closed loop, then the adhesive is adhered on the surface of the photovoltaic module, when the temperature of the surface of the module changes, an electromotive force is generated in a loop, and transmitted to the data collector, and the relation program of electromotive force and temperature value is input in the data collector in advance, the relation program of the electromotive force and the temperature value can convert the electromotive force signal into the temperature value and further transmit the temperature value to the industrial personal computer, so that the surface temperature change of the photovoltaic module can be monitored in real time; the photosensitive sensor and the light source are respectively arranged on two opposite sides of the component mounting frame, under the outdoor condition, the photovoltaic component is influenced by the effect of environmental wind force to cause the surface of the component to deform, the light source is arranged on one side of the component mounting frame, the photosensitive sensor is introduced into the other side of the component mounting frame and is used for receiving light rays emitted from the light source, when the surface of the photovoltaic component deforms, the light rays emitted from the light source to the photosensitive sensor can be blocked when the deformation is large, so that the resistance value of a photosensitive resistor of the photosensitive sensor is increased, the current value in the photosensitive sensor is reduced, the photosensitive sensor transmits the reduced and changed current value to the data acquisition unit, a relation program of current change and deformation value is input into the data acquisition unit in advance, the relation program of current change and deformation value can convert a current signal into the deformation value and further transmit the deformation value to the industrial personal computer, the data of the deformation degree of the surface of the photovoltaic module can be monitored in real time; under the illumination condition, a photovoltaic effect occurs in the photovoltaic module, a photovoltaic power source generated by the photovoltaic module is sequentially transmitted to the photovoltaic inverter and the alternating current distribution box through a photovoltaic cable, the photovoltaic inverter can monitor generated energy data such as voltage, current and power input from the photovoltaic module in real time and transmit the generated energy data to the industrial personal computer through a communication port of the photovoltaic inverter; the alternating current distribution box can monitor data such as three-phase current, voltage and power flowing from the alternating current distribution box to a power grid in real time, and transmits the data to the industrial personal computer through the communication interface of the alternating current distribution box, so that the generated energy data of the photovoltaic module can be monitored in real time; the strain gauge is arranged on the assembly mounting frame of the double-sided assembly, under the outdoor condition, the strain gauge arranged on the assembly mounting frame can extend or shorten under the influence of the ambient wind force on the photovoltaic assembly, so that the resistance change of the strain gauge is caused, the strain gauge can convert the resistance change into the voltage change and transmit the voltage change to the data acquisition unit, a relation program of stress and voltage is input into the data acquisition unit in advance, the relation program of the stress and voltage can convert a voltage signal into a stress value (namely the wind pressure born by the photovoltaic assembly) and further transmit the stress value to the industrial personal computer, and the real-time monitoring of the wind pressure born by the photovoltaic assembly outdoors is realized; the method is characterized by combining surface deformation monitoring and power generation amount monitoring of the photovoltaic module, so that the consequences of the photovoltaic module due to different wind forces are analyzed; according to the verification method, the thermocouple temperature measurement line is adopted to directly acquire real-time temperature changes of the surface of the double-sided assembly, verification operation is simplified, the strain gauge, the photosensitive sensor, the photovoltaic inverter and the alternating current distribution box are utilized to respectively monitor wind pressure, assembly surface deformation and generated energy data of the double-sided assembly in the open air in real time, and reliability verification accuracy is improved.
2. The industrial personal computer adopted by the invention uploads the wind pressure data, the temperature change data, the surface deformation data and the generated energy data which are monitored from the double-sided component to the cloud server, thereby realizing remote monitoring of the data.
3. The light sensor adopted by the invention comprises a plurality of light-sensitive resistors, the light source comprises a plurality of lamp beads, the lamp beads with different distances from the double-sided component are arranged on one side of the component mounting frame, a plurality of photosensitive resistors which are arranged at different distances from the double-sided component are introduced into the photosensitive sensor arranged at the other side of the component mounting frame, a plurality of light connecting lines which are arranged at different distances from the double-sided component and are formed by a plurality of lamp beads and the plurality of photosensitive resistors correspondingly, when the surface of the component is deformed more, the more light is blocked by the deformation, because a plurality of photoresistors are connected in series, the resistance value of the photoresistors is larger, so that the current value transmitted to the data acquisition unit by the photoresistors is lower, the relation program of the current change and the deformation value input in the data acquisition unit in advance can convert the changed current signal into the deformation value, and the data of the surface deformation degree of the photovoltaic module can be monitored in real time more accurately.
4. The device for verifying the vertical installation reliability of the double-sided component comprises a strain gauge, a photosensitive sensor, a light source, a thermocouple temperature measuring line, a data acquisition unit, an industrial personal computer, a photovoltaic inverter and an alternating current distribution box, wherein two electric cores at one end of the thermocouple temperature measuring line are in short circuit to form a closed loop, the closed loop is adhered to the surface of the photovoltaic component, and the surface temperature of the photovoltaic component is directly acquired by the data acquisition unit.
5. When the device is used, a plurality of temperature test points are arranged on the surface of the photovoltaic component, and the two cell shorts at one end of each thermocouple temperature test line are adhered to each temperature test point for testing and verifying the temperature change of the plurality of test points on the photovoltaic component, so that the accuracy of the temperature test of the device is improved.
6. The strain gauges can respectively test the strain data of a plurality of test points of the double-sided component, and the accuracy of the device on the wind pressure data of the double-sided component in the open air is improved.
7. The alternating current distribution box comprises a box body, a circuit breaker and an electronic multifunctional electric energy meter, wherein the electronic multifunctional electric energy meter can accurately and quickly measure, record and divide various electric parameters flowing from the alternating current distribution box to a power grid, and transmits the generated energy data measured in real time to an industrial personal computer, so that the accuracy of the generated energy monitoring data of a photovoltaic assembly is improved.
8. The photosensitive sensor comprises a plurality of photosensitive resistors, the light source comprises a plurality of lamp beads, and light connecting lines between the lamp beads and the photosensitive resistors are parallel to the surface of the photovoltaic module respectively, so that the accuracy of monitoring the surface deformation of the photovoltaic module is improved.
9. The invention also comprises a cloud server, and the remote monitoring of the data can be realized through the cloud server.
10. The invention also comprises a display which is convenient for monitoring the change value of each data on site.
Drawings
Fig. 1 is a schematic flow chart of a method for verifying vertical mounting reliability of a double-sided component according to an embodiment of the present invention.
Fig. 2 is a schematic perspective view of a double-sided assembly vertical mounting reliability verification apparatus according to an embodiment of the present invention.
Fig. 3 is a schematic perspective view of a double-sided assembly vertical installation reliability verification apparatus according to an embodiment of the present invention.
Fig. 4 is a schematic diagram of a partial enlarged structure of the installation of the photosensor of the vertical installation reliability verification device for the double-sided assembly according to the embodiment of the invention.
Fig. 5 is a schematic circuit diagram of a double-sided assembly vertical mounting reliability verification apparatus according to an embodiment of the present invention.
FIG. 6 is a schematic circuit diagram of a dual-sided assembly vertical mounting reliability verification device photosensor according to an embodiment of the present invention.
Description of reference numerals:
10. the device comprises a double-sided assembly, 11, a photovoltaic assembly, 12, an assembly mounting frame, 13, a stand column, 21, a thermocouple temperature measuring line, 22, a strain gauge, 23, a photosensitive sensor, 231, a photosensitive resistor, 24, a light source, 241, lamp beads, 25, a light connecting line, 30, a data acquisition unit, 40, an industrial personal computer, 50, a photovoltaic inverter, 60, an alternating current distribution box, 61, a box body, 62, a circuit breaker, 63, an electronic multifunctional electric energy meter, 70, a cloud server, 80 and a display.
Detailed Description
The following provides a detailed description of embodiments of the invention.
Referring to fig. 1 to 6, the method for verifying the vertical installation reliability of a double-sided assembly provided by the invention comprises the following steps:
(1) the double-sided component vertical installation reliability verification device is arranged on a vertically installed double-sided component 10 and comprises a strain gauge 22, a photosensitive sensor 23, a light source 24, a thermocouple temperature measuring wire 21, a data acquisition device 30, an industrial personal computer 40, a photovoltaic inverter 50 and an alternating current distribution box 60, wherein the double-sided component 10 comprises a photovoltaic component 11 and a component installation frame 12, and the photovoltaic component 11 is installed on two stand columns 13 through the component installation frame 12;
(2) two electric core short circuits at one end of a thermocouple temperature measuring wire 21 are pasted on the surface of the photovoltaic assembly 11, the surface temperature change signal of the photovoltaic assembly 11 is converted into an electromotive force signal by the thermocouple temperature measuring wire 21 and transmitted to a data acquisition unit 30, and the electromotive force signal is converted into temperature change data by the data acquisition unit 30 and transmitted to an industrial personal computer 40;
(3) the photosensitive sensor 23 and the light source 24 are respectively arranged on two opposite sides of the component mounting frame 12, when the surface of the photovoltaic component 11 deforms, the deformation blocks light rays emitted from the light source 24 to the photosensitive sensor 23, so that the current value transmitted from the photosensitive sensor 23 to the data collector 30 is reduced, and the data collector 30 converts the current change value into surface deformation data of the double-sided component 10 and transmits the surface deformation data to the industrial personal computer 40;
(4) the strain gauge 22 is arranged on the component mounting frame 12, under the action of outdoor wind power, the strain gauge 22 is used for measuring a resistance change value caused by strain of the double-sided component 10, the resistance change value is converted into a voltage change value and transmitted to the data collector 30, and the data collector 30 converts the voltage change value into wind pressure data borne by the double-sided component 10 and transmits the wind pressure data to the industrial personal computer 40;
(5) under the illumination condition, the photovoltaic module 11 sequentially transmits the generated photovoltaic power to the photovoltaic inverter 50 and the alternating current distribution box 60, and the alternating current distribution box 60 and the photovoltaic inverter 50 respectively transmit the generated energy data of the photovoltaic power to the industrial personal computer 40;
(6) the industrial personal computer 40 uploads the wind pressure data, the temperature change data, the surface deformation data and the power generation data monitored from the double-sided assembly 10 to the cloud server 70. Therefore, remote data monitoring is realized.
The verification method is characterized in that a double-sided component vertical installation reliability verification device is arranged on a vertically installed double-sided component 10, the verification device comprises a strain gauge 22, a photosensitive sensor 23, a light source 24, a thermocouple temperature measurement line 21, a data acquisition unit 30, an industrial personal computer 40, a photovoltaic inverter 50 and an alternating current distribution box 60, when in operation, two electric cores at one end of the thermocouple temperature measurement line 21 are in short circuit to form a closed loop, then the adhesive is adhered on the surface of the photovoltaic module 11, when the temperature of the surface of the module changes, an electromotive force is generated in a loop, and transmitted to the data collector 30, a relation program of the electromotive force and the temperature value is inputted in the data collector 30 in advance, the relation program of the electromotive force and the temperature value can convert the electromotive force signal into the temperature value and further transmit the temperature value to the industrial personal computer 40, so that the surface temperature change of the photovoltaic module 11 can be monitored in real time; the photosensitive sensor 23 and the light source 24 are respectively installed on two opposite sides of the component installation frame 12, under outdoor conditions, the photovoltaic component 11 is influenced by the effect of environmental wind force to cause the surface of the component to deform, the light source 24 is installed on one side of the component installation frame 12, the photosensitive sensor 23 is introduced into the other side of the component installation frame 12, the photosensitive sensor 23 is used for receiving light rays emitted from the light source 24, when the surface of the photovoltaic component 11 deforms, the light rays emitted from the light source 24 to the photosensitive sensor 23 can be blocked when the deformation is large, so that the resistance value of the photosensitive resistor 231 of the photosensitive sensor 23 is increased, the current value in the photosensitive sensor 23 is reduced, the photosensitive sensor 23 transmits the reduced and changed current value to the data acquisition unit 30, a relation program of current change and deformation value is input in the data acquisition unit 30 in advance, the relation program of current change and deformation value can convert a current signal into a deformation value, the data are further transmitted to an industrial personal computer 40, and the data of the surface deformation degree of the photovoltaic module 11 can be monitored in real time; under the illumination condition, the photovoltaic module 11 generates a photovoltaic effect, a photovoltaic power source generated by the photovoltaic module 11 is sequentially transmitted to the photovoltaic inverter 50 and the alternating current distribution box 60 through photovoltaic cables, the photovoltaic inverter 50 can monitor the generated energy data such as voltage, current and power input from the photovoltaic module 11 in real time and transmit the generated energy data to the industrial personal computer 40 through a communication port of the photovoltaic inverter 50; the alternating current distribution box 60 can monitor data such as three-phase current, voltage and power flowing from the alternating current distribution box 60 to a power grid in real time, and transmits the data to the industrial personal computer 40 through a communication interface of the alternating current distribution box, so that the generated energy data of the photovoltaic module 11 can be monitored in real time; the strain gauge 22 is arranged on the component mounting frame 12 of the double-sided component 10, under outdoor conditions, the photovoltaic component 11 is influenced by the effect of environmental wind, the strain gauge 22 arranged on the component mounting frame 12 can extend or shorten, so that resistance change of the strain gauge 22 is caused, the strain gauge 22 can convert the resistance change into voltage change and transmit the voltage change to the data collector 30, a relation program of stress and voltage is input into the data collector 30 in advance, the relation program of the stress and the voltage can convert a voltage signal into a stress value (namely wind pressure born by the photovoltaic component 11) and further transmit the stress value to the industrial personal computer 40, and the outdoor wind pressure born by the photovoltaic component 11 can be monitored in real time; the surface deformation monitoring and the power generation amount monitoring of the photovoltaic module 11 are combined, so that the consequences of the photovoltaic module 11 caused by different wind forces are analyzed; according to the verification method, the thermocouple temperature measuring line 21 is adopted to directly acquire real-time temperature change of the surface of the double-sided component 10, verification operation is simplified, the strain gauge 22, the photosensitive sensor 23, the photovoltaic inverter 50 and the alternating current distribution box 60 are utilized to respectively monitor wind pressure, component surface deformation and generated energy data of the double-sided component 10 in the open air in real time, and reliability verification accuracy is improved.
The photosensitive sensor 23 comprises a plurality of photosensitive resistors 231, the photosensitive resistors 231 are connected in series, the light source 24 comprises a plurality of lamp beads 241, the lamp beads 241 and the photosensitive resistors 231 correspond to form a plurality of light connecting lines 25, and the light connecting lines 25 are sequentially and gradually far away from the outer surface of the photovoltaic module 11; when the deformation of the photovoltaic module 11 is larger, the more light rays are blocked by the deformation, so that the resistance value of the photoresistor 231 is larger, the lower the current value transmitted to the data acquisition unit 30 by the photosensor 23 is, and the data acquisition unit 30 obtains the surface deformation data of the photovoltaic module 11 according to the relation program of the current change and the deformation value. By installing a plurality of lamp beads 241 at different distances from the double sided module 10 at one side of the module installation frame 12, a plurality of photoresistors 231 which are arranged at different distances from the double-sided component 10 are introduced into the photosensitive sensor 23 arranged at the other side of the component mounting frame 12, a plurality of light connecting lines 25 which are arranged at different distances from the double-sided component 10 and are formed by a plurality of lamp beads 241 and the plurality of photoresistors 231 correspondingly, when the surface of the component is deformed to be larger, the more light rays blocked by the deformation are, since the plurality of photo resistors 231 are connected in series, the larger the resistance value of the photo resistor 231 is, therefore, the lower the current value transmitted to the data acquisition unit 30 by the photosensitive sensor 23 is, the lower the relation program between the current change and the deformation value input in the data acquisition unit 30 in advance can convert the changed current signal into the deformation value, and the more accurate the real-time monitoring of the surface deformation degree data of the photovoltaic module 11 is realized.
Referring to fig. 2 to 6, the double-sided assembly vertical installation reliability verification device provided by the invention comprises a strain gauge 22, a photosensitive sensor 23, a light source 24, a thermocouple temperature measuring wire 21, a data collector 30, an industrial personal computer 40, a photovoltaic inverter 50 and an alternating current distribution box 60, wherein the strain gauge 22 is arranged on the outer surface of the vertically installed double-sided assembly 10, the double-sided assembly 10 comprises a photovoltaic assembly 11 and an assembly installation frame 12, two electric cores at one end of the thermocouple temperature measuring wire 21 are short-circuited and adhered to the outer surface of the photovoltaic assembly 11, the photosensitive sensor 23 and the light source 24 are respectively installed on two opposite sides of the assembly installation frame 12, and the other ends of the strain gauge 22, the photosensitive sensor 23, the light source 24 and the temperature measuring thermocouple wire 21 are respectively and electrically connected with the data collector 30; the power output end of the photovoltaic module 11 is electrically connected with the photovoltaic inverter 50 and the alternating current distribution box 60 in sequence, and the data collector 30, the photovoltaic inverter 50 and the alternating current distribution box 60 are respectively in signal connection with the industrial personal computer 40. Two electric cores at one end of a thermocouple temperature measuring wire 21 are in short circuit to form a closed loop, then the closed loop is pasted on the surface of the photovoltaic assembly 11, the surface temperature of the photovoltaic assembly 11 is directly collected by the data collector 30, compared with the prior art, verification operation is simplified, in addition, wind pressure, assembly surface deformation and generated energy data of the double-sided assembly 10 in the open air are respectively monitored in real time by the strain gauge 22, the photosensitive sensor 23, the photovoltaic inverter 50 and the alternating current distribution box 60, and the accuracy of reliability verification is improved. Preferably, the data collector 30 of the present invention is a CR1000 data collector.
The number of the thermocouple temperature measuring lines 21 is multiple, a plurality of temperature measuring points are arranged on the surface of the photovoltaic module 11, the number of the temperature measuring points corresponds to the number of the thermocouple temperature measuring lines 21, two electric cores at one end of each thermocouple temperature measuring line 21 are in short circuit connection and adhered to each temperature measuring point, and the other end of each thermocouple temperature measuring line 21 is electrically connected with the data collector 30. When the device is used, a plurality of temperature test points are arranged on the surface of the photovoltaic module 11, and two cell short circuits at one end of each thermocouple temperature measurement line 21 are adhered to each temperature test point for testing and verifying the temperature change of the plurality of test points on the photovoltaic module 11, so that the accuracy of the temperature test of the device is improved.
The strain gauges 22 are provided in plural, and the plurality of strain gauges 22 are respectively provided on the component mounting frame 12 and are respectively electrically connected to the data acquisition unit 30. The strain gauges 22 can respectively test the strain data of a plurality of test points of the double-sided component 10, and the accuracy of the device for the wind pressure data of the double-sided component 10 in the open air is improved.
The alternating current distribution box 60 comprises a box body 61, a circuit breaker 62 and an electronic multifunctional electric energy meter 63, the circuit breaker 62 and the electronic multifunctional electric energy meter 63 are respectively installed in the box body 61, the photovoltaic inverter 50 is electrically connected with a power grid through the circuit breaker 62 and the electronic multifunctional electric energy meter 63 in sequence, and the alternating current distribution box 60 is in signal connection with the industrial personal computer 40 through the electronic multifunctional electric energy meter 63. The electronic multifunctional electric energy meter 63 can accurately and quickly measure, record and divide various electric parameters flowing from the alternating current distribution box 60 to the power grid, and transmit the generated energy data measured in real time to the industrial personal computer 40, so that the accuracy of the generated energy monitoring data of the photovoltaic assembly 11 is improved.
The photosensitive sensor 23 includes a plurality of photosensitive resistors 231, as shown in fig. 6, the plurality of photosensitive resistors 231 are connected in series, the light source 24 includes a plurality of lamp beads 241, the number of the photosensitive resistors 231 corresponds to the number of the lamp beads 241, the plurality of photosensitive resistors 231 and the plurality of lamp beads 241 are respectively and gradually away from two opposite sides of the module mounting frame 12, and the light connecting lines 25 formed between each lamp bead 241 and each photosensitive resistor 231 are respectively parallel to the surface of the photovoltaic module 11. The light connecting lines 25 between the lamp beads 241 and the photoresistors 231 are parallel to the surface of the photovoltaic module 11, so that the accuracy of monitoring the surface deformation of the photovoltaic module 11 is improved.
The double-sided assembly vertical installation reliability verification device further comprises a cloud server 70 and a display 80, and the industrial personal computer 40 is in communication connection with the cloud server 70. The remote monitoring of the data can be realized through the cloud server 70.
The industrial personal computer 40 is provided with a VGA interface, and the industrial personal computer 40 is in signal connection with the display 80 through the VGA interface. The display 80 is conveniently used to monitor the variation values of the respective data in the field.
The above are merely specific embodiments of the present invention, and the scope of the present invention is not limited thereby; any alterations and modifications without departing from the spirit of the invention are within the scope of the invention.
Claims (9)
1. A method for verifying vertical installation reliability of a double-faced assembly is characterized by comprising the following steps:
(1) the double-sided component vertical installation reliability verification device is arranged on the vertically installed double-sided component and comprises a strain gauge, a photosensitive sensor, a light source, a thermocouple temperature measurement line, a data acquisition device, an industrial personal computer, a photovoltaic inverter and an alternating current distribution box, wherein the double-sided component comprises a photovoltaic component and a component installation frame, and the photovoltaic component is installed on two stand columns through the component installation frame;
(2) the two electric cores at one end of the thermocouple temperature measuring wire are in short circuit and are adhered to the surface of the photovoltaic assembly, the surface temperature change signal of the photovoltaic assembly is converted into an electromotive force signal by the thermocouple temperature measuring wire and is transmitted to the data acquisition unit, and the data acquisition unit converts the electromotive force signal into temperature change data and transmits the temperature change data to the industrial personal computer;
(3) the photosensitive sensor and the light source are respectively arranged on two opposite sides of the component mounting frame, the photosensitive sensor comprises a plurality of photosensitive resistors, the photosensitive resistors are connected in series, the light source comprises a plurality of lamp beads, the lamp beads and the photosensitive resistors correspond to form a plurality of light connecting lines, and the light connecting lines are sequentially and gradually far away from the outer surface of the photovoltaic component; when the surface of the photovoltaic component deforms, the deformation blocks light rays emitted from the light source to the photosensitive sensor, so that the current value transmitted to the data collector by the photosensitive sensor is reduced, when the deformation of the photovoltaic component is larger, the more the light rays blocked by the deformation are, the larger the resistance value of the photosensitive resistor is, so that the lower the current value transmitted to the data collector by the photosensitive sensor is, and the data collector converts the current change value into double-sided component surface deformation data according to a relation program of the current change and the deformation value and transmits the double-sided component surface deformation data to the industrial personal computer;
(4) the strain gauge is arranged on the component mounting frame, under the action of outdoor wind power, the strain gauge is used for measuring a resistance change value caused by strain of the double-sided component, the resistance change value is converted into a voltage change value and transmitted to the data collector, and the data collector converts the voltage change value into wind pressure data borne by the double-sided component and transmits the wind pressure data to the industrial personal computer;
(5) and under the illumination condition, the photovoltaic module sequentially transmits the generated photovoltaic power supply to the photovoltaic inverter and the alternating current distribution box, and the alternating current distribution box and the photovoltaic inverter respectively transmit the generated energy data of the photovoltaic power supply to the industrial personal computer.
2. The method for verifying vertical mounting reliability of a double-sided assembly as recited in claim 1, further comprising the steps of:
(6) and the industrial personal computer uploads the wind pressure data, the temperature change data, the surface deformation data and the generated energy data monitored from the double-sided component to the cloud server.
3. A double-sided assembly vertical installation reliability verification device for implementing the verification method of any one of claims 1 to 2 is characterized by comprising a strain gauge, a photosensitive sensor, a light source, a thermocouple temperature measurement line, a data collector, an industrial personal computer, a photovoltaic inverter and an alternating current distribution box, wherein the strain gauge is arranged on the outer surface of the vertically installed double-sided assembly, the double-sided assembly comprises a photovoltaic assembly and an assembly installation frame, two battery cores at one end of the thermocouple temperature measurement line are in short circuit and are adhered to the outer surface of the photovoltaic assembly, the photosensitive sensor and the light source are respectively installed on two opposite sides of the assembly installation frame, and the other ends of the strain gauge, the photosensitive sensor, the light source and the thermocouple temperature measurement line are respectively and electrically connected with the data collector; the power output end of the photovoltaic module is sequentially electrically connected with the photovoltaic inverter and the alternating current distribution box, and the data collector, the photovoltaic inverter and the alternating current distribution box are respectively in signal connection with the industrial personal computer.
4. The double-sided assembly vertical installation reliability verification device of claim 3, wherein the number of thermocouple temperature measurement lines is multiple, a plurality of temperature measurement points are arranged on the surface of the photovoltaic assembly, the number of the temperature measurement points corresponds to the number of the thermocouple temperature measurement lines, two battery cores at one end of each thermocouple temperature measurement line are in short circuit connection and are adhered to each temperature measurement point, and the other end of each thermocouple temperature measurement line is electrically connected with the data collector respectively.
5. The double-sided assembly vertical installation reliability verification device of claim 3, wherein the number of the strain gauges is multiple, and the multiple strain gauges are respectively arranged on the assembly installation frame and are respectively electrically connected with the data acquisition unit.
6. The double-sided assembly vertical installation reliability verification device of claim 3, wherein the AC distribution box comprises a box body, a circuit breaker and an electronic multifunctional electric energy meter, the circuit breaker and the electronic multifunctional electric energy meter are respectively installed in the box body, the photovoltaic inverter is electrically connected with a power grid through the circuit breaker and the electronic multifunctional electric energy meter in sequence, and the AC distribution box is in signal connection with the industrial personal computer through the electronic multifunctional electric energy meter.
7. The double-sided assembly vertical installation reliability verification device according to any one of claims 3 to 6, wherein the photosensitive sensor comprises a plurality of photosensitive resistors, the plurality of photosensitive resistors are connected in series, the light source comprises a plurality of light beads, the number of the photosensitive resistors corresponds to the number of the light beads, the plurality of photosensitive resistors and the plurality of light beads are respectively and gradually far away from two opposite sides of the assembly installation frame, and light connecting lines formed between each light bead and each photosensitive resistor are respectively parallel to the surface of the photovoltaic assembly.
8. The double-sided assembly vertical installation reliability verification device as claimed in any one of claims 3 to 6, further comprising a cloud server, wherein the industrial personal computer is in communication connection with the cloud server.
9. The double-sided assembly vertical installation reliability verification device of any one of claims 3 to 6, further comprising a display, wherein the industrial personal computer is provided with a VGA interface, and is in signal connection with the display through the VGA interface.
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