CN204304922U - A kind of photovoltaic module hot spot inspection device based on unmanned plane - Google Patents

A kind of photovoltaic module hot spot inspection device based on unmanned plane Download PDF

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Publication number
CN204304922U
CN204304922U CN201420703581.0U CN201420703581U CN204304922U CN 204304922 U CN204304922 U CN 204304922U CN 201420703581 U CN201420703581 U CN 201420703581U CN 204304922 U CN204304922 U CN 204304922U
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CN
China
Prior art keywords
unmanned plane
photovoltaic module
hot spot
controller
spot inspection
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CN201420703581.0U
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Chinese (zh)
Inventor
刘正权
邱岩
张志强
唐荣宽
王旭阳
罗泱
肖鹏军
魏晨光
包亦望
陈璐
张庆华
杜大艳
吴蔚
梁慧超
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中国建材检验认证集团股份有限公司
北京信息科技大学
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Priority to CN201420703581.0U priority Critical patent/CN204304922U/en
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    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00Energy generation through renewable energy sources
    • Y02E10/50Photovoltaic [PV] energy

Abstract

The utility model relates to a kind of photovoltaic module hot spot inspection device based on unmanned plane.The described photovoltaic module hot spot inspection device based on unmanned plane, for monitoring the hot spot defect of photovoltaic module, comprising: unmanned plane; Thermal infrared imager, it is arranged on below described unmanned plane, for taking described photovoltaic module, and forms photographed data information; Ground handling station, described ground handling station can show described photographed data information.Feature of the present utility model is that automaticity is high, detection range is wide.

Description

A kind of photovoltaic module hot spot inspection device based on unmanned plane
Technical field
The utility model relates to field of solar energy, especially a kind of photovoltaic module hot spot inspection device based on unmanned plane.
Background technology
At present, along with the development of heliotechnics and the stimulation of national new forms of energy policy, domesticly build numerous solar photovoltaic power plants, comprise large-scale ground photovoltaic plant, building roof photovoltaic plant etc.If defects such as hiddenly splitting appears in solar photovoltaic assembly in the process used, fragment, failure weldings, or when being blocked for a long time by other object (as birds droppings, tree shade, photovoltaic arrays shade etc.), solar photovoltaic assembly now will seriously generate heat, and produces hot spot effect.Use in solar cell in reality, the solder joint on battery component will be made to melt and damage grid line if the temperature that hot spot effect produces has exceeded certain limit, thus cause scrapping of whole solar module.This effect can cause solar photovoltaic assembly and very seriously destroy, thus reduces generating efficiency and affect solar energy system service life, and time serious, assembly temperature raises and causes fire incident, causes heavy losses.According to statistics, hot spot effect makes at least reduce 10% the actual life of solar module.So carry out necessary Daily Round Check to solar photovoltaic power plant, Timeliness coverage has the assembly module of hot spot defect, and carry out safeguarding or change for raising power station operational efficiency and service life most important.
After photovoltaic module produces hot spot defect, local temperature is higher than other normal positions, with regard to illustrating that this cell piece may have problem, is turned the duty of electric energy by normal luminous energy, becomes the load consumption electric energy heating of battery component.Based on this feature, utilize thermal infrared imager can detect photovoltaic module with hot spot defect easily.At present, the normal Handheld infrared thermal imager that adopts carries out hot spot defects detection to solar power station photovoltaic module.And this detection mode deposits shortcoming in the following areas: photovoltaic module is normally arranged on photovoltaic bracket by (1) large-scale ground power station or roofing power station, due to factor impacts such as support heights, operator from a higher position or can only carry out overall infrared thermal imaging detection by lowering or hoisting gear, what have does not also possess shooting condition, poor operability; (2) solar power station photovoltaic module One's name is legion, what have has thousands of pieces of photovoltaic modulies, and artificial IR thermal imaging inspection workload is very big, and efficiency is low, sense cycle is long; (3) detection of photovoltaic plant is all generally under power generation operation state, and DC output end is strong voltage, and testing staff closely operates the larger safety problem of existence.Therefore, be necessary the automatic tour inspection system designing a kind of solar photovoltaic assembly hot spot defect, improve detection efficiency and processing safety, ensure that the normal operation of solar power station has great importance.
Summary of the invention
In view of this, the utility model provides a kind of photovoltaic module hot spot inspection device based on unmanned plane, solve the deficiency that prior art exists in detection efficiency, operability, security etc., the quick testing requirement of various solar power station photovoltaic module hot spot defect can be met.
The purpose of this utility model is achieved through the following technical solutions.
By a kind of photovoltaic module hot spot inspection device based on unmanned plane, for monitoring the hot spot defect of photovoltaic module, comprising: unmanned plane; Thermal infrared imager, it is arranged on below described unmanned plane, for taking described photovoltaic module, and forms photographed data information; Ground handling station, described ground handling station can show described photographed data information.
Aforesaid based in the photovoltaic module hot spot inspection device of unmanned plane, described unmanned plane is provided with the measurement components connected by circuit, airborne transmitting assembly and the first controller; Described measurement components is for measuring heading and the angle of inclination data message of unmanned plane; Described airborne transmitting assembly is used for described photographed data information, described heading and angle of inclination data information transfer to ground handling station; Described first controller is configured to the controller of unmanned plane during flying described in the flying method Data Control that provides according to ground handling station.
Aforesaid based in the photovoltaic module hot spot inspection device of unmanned plane, described ground handling station comprises ground receiver end, second controller and display terminal; Described ground receiver termination receives the data message that described airborne transmitting assembly transmits; Described second controller is configured to the controller providing flying method data to described first controller; Described photographed data information is shown by described display terminal.
Aforesaid based in the photovoltaic module hot spot inspection device of unmanned plane, described second controller is the operating desk with rocking bar, or multichannel aircraft remote controller, or computer.
Aforesaid based in the photovoltaic module hot spot inspection device of unmanned plane, described unmanned plane is provided with camera head, described ground handling station also comprises the 3rd controller, described 3rd controller is used for providing rotating manner data message to described camera head, and described camera head controls the angle lens of described thermal infrared imager according to the rotating manner data message that described 3rd controller provides.
Aforesaid based in the photovoltaic module hot spot inspection device of unmanned plane, described unmanned plane is many rotor wing unmanned aerial vehicles, fixed-wing unmanned plane or depopulated helicopter.
Aforesaid based in the photovoltaic module hot spot inspection device of unmanned plane, described unmanned plane is provided with global positioning system unit.
Aforesaid based in the photovoltaic module hot spot inspection device of unmanned plane, described unmanned plane is provided with memory device, and described memory device is connected with described thermal infrared imager, and described memory device is for storing described photographed data information.
Aforesaidly also comprise visible light camera based in the photovoltaic module hot spot inspection device of unmanned plane, described visible light camera is arranged on below described unmanned plane, and the image data information of described visible light camera shooting is passed to described ground handling station.
Aforesaidly on described unmanned plane, be provided with laser ranging unit based in the photovoltaic module hot spot inspection device of unmanned plane, described laser ranging unit and described thermal infrared imager are disposed on the same plane.
By technique scheme, a kind of photovoltaic module hot spot inspection device based on unmanned plane that the utility model proposes at least has following advantages:
1) the utility model can carry out quick high-altitude to the photovoltaic module of any setting height(from bottom), position and patrols and examines;
2) the utility model detection efficiency is high, and saved a large amount of costs of labor, cost performance is high;
3) operating personnel closely near solar power station photovoltaic module, need not ensure the personal safety of personnel.
Above-mentioned explanation is only the general introduction of technical solutions of the utility model, in order to better understand technological means of the present utility model, and can be implemented according to the content of description, coordinates accompanying drawing to be described in detail as follows below with preferred embodiment of the present utility model.
Accompanying drawing explanation
Fig. 1 is the structural representation of a kind of photovoltaic module hot spot inspection device based on unmanned plane that embodiment of the present utility model provides.
Detailed description of the invention
For further setting forth the utility model for the technological means reaching predetermined goal of the invention and take and effect, below in conjunction with accompanying drawing and preferred embodiment, to according to the detailed description of the invention of a kind of photovoltaic module hot spot inspection device based on unmanned plane that the utility model proposes, structure, feature and effect thereof, be described in detail as follows.In the following description, the not necessarily same embodiment that different " embodiment " or " embodiment " refers to.In addition, special characteristic, structure or feature in one or more embodiment can be combined by any suitable form.
The photovoltaic module hot spot inspection device based on unmanned plane as shown in Figure 1, for monitoring the hot spot defect of photovoltaic module, comprising: unmanned plane 1; Thermal infrared imager 2, it is arranged on below described unmanned plane 1, for taking described photovoltaic module, and forms photographed data information; Ground handling station 3, described ground handling station 3 is for showing described photographed data information.
In the present embodiment, described thermal infrared imager 2 can carry out data transmission by circuit with described ground handling station 3.
As the embodiment that can convert, described thermal infrared imager 2 can also carry out data transmission by wireless device with described ground handling station 3.
Described unmanned plane 1 drives described thermal infrared imager 2 to fly above described photovoltaic module, and described thermal infrared imager 2 can be taken described photovoltaic module and be formed and take the photograph data message, described in take the photograph data message and comprise Infrared Thermogram and infrared video.The Infrared Thermogram obtained by shooting and infrared video can detect whether solar photovoltaic assembly hot spot defect occurs, and produce the position of the photovoltaic module of hot spot defect, carry out further judging whether to need repairing.
Described photovoltaic module patrols and examines photographing device control mode: the tilt angle alpha measuring the lopsided length b of photovoltaic module and photovoltaic module; 2) parallel with described photovoltaic module inclined plane by adjustment assembly adjustment thermal infrared imager 2; 3) control unmanned plane 1 to fly in a horizontal manner, heading is described solar photovoltaic assembly inclined side bearing of trend, measures described unmanned plane 1 flying height H; 4) described ground handling station 3 calculate described in take pictures the vertical range L of assembly to photovoltaic module, 5) measure the air line distance Li of take pictures assembly and photovoltaic module in real time, compared by Li and L: if Li ≠ L, then described unmanned plane 1 continues flight, if Li=L, then unmanned plane 1 keeps hovering, and assembly of taking pictures described in startup carries out process of taking pictures, and then described unmanned plane 1 continues flight.
A kind of photovoltaic module that another embodiment of the present utility model proposes patrols and examines photographing device, and compared with above-described embodiment, described unmanned plane is provided with the measurement components connected by circuit, airborne transmitting assembly and the first controller; Described measurement components is for measuring heading and the angle of inclination data message of unmanned plane; Described airborne transmitting assembly is used for described photographed data information, described heading and angle of inclination data information transfer to ground handling station 3; Described first controller is configured to the controller of unmanned plane during flying described in the flying method Data Control that provides according to ground handling station 3.
A kind of photovoltaic module that another embodiment of the present utility model proposes patrols and examines photographing device, and compared with above-described embodiment, described ground handling station 3 comprises ground receiver end, second controller and display terminal; Described ground receiver termination receives the data message that described airborne transmitting assembly transmits; Described second controller is configured to the controller providing flying method data to described first controller; Described photographed data information is shown by described display terminal.
During concrete enforcement, described second controller is the operating desk with rocking bar.
As the embodiment that can convert, described second controller is multichannel aircraft remote controller.
As the embodiment that can convert, described second controller is computer.
A kind of photovoltaic module that another embodiment of the present utility model proposes patrols and examines photographing device, compared with above-described embodiment, described unmanned plane 1 is provided with camera head, described ground handling station 3 also comprises the 3rd controller, described 3rd controller is used for providing rotating manner data message to described camera head, and described camera head controls the angle lens of described thermal infrared imager 2 according to the rotating manner data message that described 3rd controller provides.
Described thermal infrared imager 2 is fixed on twin shaft or the controlled camera head of three axles, camera head is fixedly installed in the bottom of unmanned plane by holding screw, thermal infrared imager 2 is connected with the airborne transmitting assembly of unmanned aerial vehicle platform by integrated cable, integrated cable has power supply, the function of data transmission, the image of the data of camera head and thermal infrared imager 2 or video data can be sent to the ground receiver end at ground handling station 3 by airborne transmitting assembly, ground receiver end is connected with second controller, control signal data send to camera head to control its motion by up-link by second controller, and by the image of downlink transmission thermal infrared imager 2 and video data in ground handling station 3, can show in real time data at display terminal, editor and storage etc.The focal length of thermal infrared imager 2 can manually focus or automatic focusing, and by controlling camera head, the camera lens of thermal infrared imager 2 is fallen in and tested solar photovoltaic assembly all the time.
During concrete enforcement, described unmanned plane is many rotor wing unmanned aerial vehicles.
As the embodiment that can convert, described unmanned plane is fixed-wing unmanned plane.
As the embodiment that can convert, described unmanned plane is depopulated helicopter.
A kind of photovoltaic module that another embodiment of the present utility model proposes patrols and examines photographing device, and compared with above-described embodiment, described unmanned plane 1 is provided with global positioning system unit.
A kind of photovoltaic module that another embodiment of the present utility model proposes patrols and examines photographing device, compared with above-described embodiment, described unmanned plane 1 is provided with memory device, and described memory device is connected with described thermal infrared imager 2, and described memory device is for storing described photographed data information.
A kind of photovoltaic module that another embodiment of the present utility model proposes patrols and examines photographing device, compared with above-described embodiment, also comprise visible light camera, described visible light camera is arranged on below described unmanned plane 1, and the image data information of described visible light camera shooting is passed to described ground handling station 3.
A kind of photovoltaic module that another embodiment of the present utility model proposes patrols and examines photographing device, and compared with above-described embodiment, described unmanned plane 1 is provided with laser ranging unit, described laser ranging unit and described thermal infrared imager 2 are disposed on the same plane.
During concrete enforcement, described unmanned plane 1 is also provided with Inertial Measurement Unit IMU, voltage detecting and alarm unit PMU, global positioning system unit GPS, display superpositing unit OSD, described first controller is connected with airborne transmitting assembly by circuit, wireless network or radio station's microwave signal is utilized to make the data of airborne transmitting assembly be transferred to the ground receiver end at ground handling station 3, again data are passed to the second controller at ground handling station 3, realize the attitude of unmanned plane, highly, distance, course, the enforcement passback of the data such as cell voltage, and show at the display terminal at ground handling station 3, conversely by the flight attitude of the second controller control unmanned plane at ground handling station 3.
The utility model solar photovoltaic assembly hot spot defect unmanned plane automatic tour inspection system is when starting patrol task, by to the cartographic information in tested place or geographic coordinate information, automatically the line of flight or the Non-follow control line of flight is set by second controller, and by the bottom of camera head fixed installation with unmanned plane during flying unit, thermal infrared imager 2 is arranged in camera head, start the power supply of unmanned plane during flying unit, by second controller control unmanned aerial vehicle platform fly setting height time, camera head is controlled again by the second controller at ground handling station 3, make the shooting angle of thermal infrared imager 2 perpendicular to tested assembly, focus and obtain clear infrared picture data and video data, thermal infrared imager 2 by data wire by infrared image and video data transmission to airborne transmitting assembly, and with control data information superposition after be wirelessly transmitted to the ground receiver end at ground handling station 3, be transferred in ground handling station 3 again, display terminal realizes the real-time display of data simultaneously, record, store and subsequent analysis.Thermal infrared imager 2 also can store data on self-contained storage card, imports to computer and carry out subsequent analysis after aerial mission terminates.The Infrared Thermogram obtained by shooting and infrared video can detect whether solar photovoltaic assembly hot spot defect occurs.
The above, it is only preferred embodiment of the present utility model, not any pro forma restriction is done to the utility model, the any simple modification done above embodiment according to technical spirit of the present utility model, equivalent variations and modification, all still belong in the scope of technical solutions of the utility model.

Claims (10)

1., based on a photovoltaic module hot spot inspection device for unmanned plane, for monitoring the hot spot defect of photovoltaic module, it is characterized in that comprising:
Unmanned plane;
Thermal infrared imager, it is arranged on below described unmanned plane, for taking described photovoltaic module, and forms photographed data information;
Ground handling station, described ground handling station can show described photographed data information.
2. the photovoltaic module hot spot inspection device based on unmanned plane according to claim 1, is characterized in that,
Described unmanned plane is provided with the measurement components connected by circuit, airborne transmitting assembly and the first controller;
Described measurement components is for measuring heading and the angle of inclination data message of unmanned plane;
Described airborne transmitting assembly is used for described photographed data information, described heading and angle of inclination data information transfer to ground handling station;
Described first controller is configured to the controller of unmanned plane during flying described in the flying method Data Control that provides according to ground handling station.
3. the photovoltaic module hot spot inspection device based on unmanned plane according to claim 2, is characterized in that,
Described ground handling station comprises ground receiver end, second controller and display terminal;
Described ground receiver termination receives the data message that described airborne transmitting assembly transmits;
Described second controller is configured to the controller providing flying method data to described first controller;
Described photographed data information is shown by described display terminal.
4. the photovoltaic module hot spot inspection device based on unmanned plane according to claim 3, is characterized in that,
Described second controller is the operating desk with rocking bar, or multichannel aircraft remote controller, or computer.
5. the photovoltaic module hot spot inspection device based on unmanned plane according to claim 2, is characterized in that,
Described unmanned plane is provided with camera head,
Described ground handling station also comprises the 3rd controller, and described 3rd controller is used for providing rotating manner data message to described camera head,
Described camera head controls the angle lens of described thermal infrared imager according to the rotating manner data message that described 3rd controller provides.
6. the photovoltaic module hot spot inspection device based on unmanned plane according to claim 2, is characterized in that,
Described unmanned plane is many rotor wing unmanned aerial vehicles, fixed-wing unmanned plane or depopulated helicopter.
7. the photovoltaic module hot spot inspection device based on unmanned plane according to any one of claim 1 to 6, is characterized in that,
Described unmanned plane is provided with global positioning system unit.
8. the photovoltaic module hot spot inspection device based on unmanned plane according to any one of claim 1 to 6, is characterized in that,
Described unmanned plane is provided with memory device, and described memory device is connected with described thermal infrared imager, and described memory device is for storing described photographed data information.
9. the photovoltaic module hot spot inspection device based on unmanned plane according to any one of claim 1 to 6, is characterized in that,
Also comprise visible light camera, described visible light camera is arranged on below described unmanned plane, and the image data information of described visible light camera shooting is passed to described ground handling station.
10. the photovoltaic module hot spot inspection device based on unmanned plane according to any one of claim 1 to 6, is characterized in that,
Described unmanned plane is provided with laser ranging unit, and described laser ranging unit and described thermal infrared imager are disposed on the same plane.
CN201420703581.0U 2014-11-20 2014-11-20 A kind of photovoltaic module hot spot inspection device based on unmanned plane CN204304922U (en)

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CN105186967A (en) * 2015-08-12 2015-12-23 无锡同春新能源科技有限公司 Water surface floating intelligent photovoltaic power station group remote management using unmanned aerial vehicle
CN105486716A (en) * 2015-11-27 2016-04-13 哈尔滨工业大学 Active infrared nondestructive test unmanned plane system
CN105608281A (en) * 2015-12-31 2016-05-25 哈尔滨工业大学(威海) Photovoltaic power generation station location method, device and system based on unmanned aerial vehicle platform
CN105700544A (en) * 2016-04-08 2016-06-22 暨南大学 UAV tour inspection system and implementation method for electrical equipment of photovoltaic power station
CN105720917A (en) * 2016-01-28 2016-06-29 天津理工大学 Infrared image processing based hot spot rapid detection system and method of photovoltaic array
CN106354032A (en) * 2015-07-17 2017-01-25 深圳市道通智能航空技术有限公司 Unmanned aerial vehicle control method, device and system
CN106598064A (en) * 2016-10-19 2017-04-26 广东容祺智能科技有限公司 Unmanned aerial vehicle circuit line intelligent identification device and method
CN107026612A (en) * 2017-05-17 2017-08-08 许昌学院 A kind of solar power station automatic tour inspection system
CN107205111A (en) * 2016-03-18 2017-09-26 奥林巴斯株式会社 Camera device, mobile device, camera system, image capture method and recording medium
CN107453710A (en) * 2017-09-06 2017-12-08 合肥凌山新能源科技有限公司 A kind of monitoring system for off-network photovoltaic generating system
CN108227733A (en) * 2017-11-30 2018-06-29 国网河南省电力公司偃师市供电公司 A kind of method and apparatus of insulation fault location in ungrounded electric power system
CN108886341A (en) * 2017-08-30 2018-11-23 深圳市大疆创新科技有限公司 The EL detection device and unmanned plane of photovoltaic module
CN108880467A (en) * 2018-07-25 2018-11-23 广东石油化工学院 A kind of photovoltaic module On-line Fault monitoring method
CN109194284A (en) * 2018-09-18 2019-01-11 甘肃启远智能科技有限责任公司 Photovoltaic plant cruising inspection system, ground based terminal and equipment of taking photo by plane
CN109379040A (en) * 2018-11-26 2019-02-22 武汉理工大学 Photovoltaic plant inspection cleaning unmanned plane and its clean method based on machine vision
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CN111130456A (en) * 2019-11-18 2020-05-08 孚龙光伏(厦门)有限公司 Method and system for detecting buoyancy loss of overwater photovoltaic array

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CN106354032A (en) * 2015-07-17 2017-01-25 深圳市道通智能航空技术有限公司 Unmanned aerial vehicle control method, device and system
CN105186967A (en) * 2015-08-12 2015-12-23 无锡同春新能源科技有限公司 Water surface floating intelligent photovoltaic power station group remote management using unmanned aerial vehicle
CN105486716A (en) * 2015-11-27 2016-04-13 哈尔滨工业大学 Active infrared nondestructive test unmanned plane system
CN105608281A (en) * 2015-12-31 2016-05-25 哈尔滨工业大学(威海) Photovoltaic power generation station location method, device and system based on unmanned aerial vehicle platform
CN105720917A (en) * 2016-01-28 2016-06-29 天津理工大学 Infrared image processing based hot spot rapid detection system and method of photovoltaic array
CN107205111A (en) * 2016-03-18 2017-09-26 奥林巴斯株式会社 Camera device, mobile device, camera system, image capture method and recording medium
CN107205111B (en) * 2016-03-18 2021-03-02 奥林巴斯株式会社 Image pickup apparatus, mobile apparatus, image pickup system, image pickup method, and recording medium
CN105700544A (en) * 2016-04-08 2016-06-22 暨南大学 UAV tour inspection system and implementation method for electrical equipment of photovoltaic power station
CN106598064A (en) * 2016-10-19 2017-04-26 广东容祺智能科技有限公司 Unmanned aerial vehicle circuit line intelligent identification device and method
CN107026612A (en) * 2017-05-17 2017-08-08 许昌学院 A kind of solar power station automatic tour inspection system
CN107026612B (en) * 2017-05-17 2019-04-30 许昌学院 A kind of solar power station automatic tour inspection system
CN109964477A (en) * 2017-07-21 2019-07-02 深圳市大疆创新科技有限公司 Image intake device, moveable platform and image capturing equipment
CN108886341A (en) * 2017-08-30 2018-11-23 深圳市大疆创新科技有限公司 The EL detection device and unmanned plane of photovoltaic module
WO2019041188A1 (en) * 2017-08-30 2019-03-07 深圳市大疆创新科技有限公司 El detection apparatus for photovoltaic assembly and unmanned aerial vehicle
CN107453710A (en) * 2017-09-06 2017-12-08 合肥凌山新能源科技有限公司 A kind of monitoring system for off-network photovoltaic generating system
CN108227733A (en) * 2017-11-30 2018-06-29 国网河南省电力公司偃师市供电公司 A kind of method and apparatus of insulation fault location in ungrounded electric power system
CN108880467A (en) * 2018-07-25 2018-11-23 广东石油化工学院 A kind of photovoltaic module On-line Fault monitoring method
CN109194284A (en) * 2018-09-18 2019-01-11 甘肃启远智能科技有限责任公司 Photovoltaic plant cruising inspection system, ground based terminal and equipment of taking photo by plane
CN109379040A (en) * 2018-11-26 2019-02-22 武汉理工大学 Photovoltaic plant inspection cleaning unmanned plane and its clean method based on machine vision
CN111130456A (en) * 2019-11-18 2020-05-08 孚龙光伏(厦门)有限公司 Method and system for detecting buoyancy loss of overwater photovoltaic array

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