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公开(公告)号：US12136900B2
公开(公告)日：2024-11-05
申请号：US17669724
申请日：2022-02-11
Applicant: Huawei Digital Power Technologies Co., Ltd.
Inventor： Jianqiang Wang , Song Wan , Yanzhong Zhang , Yongbing Gao
Abstract: A method and an apparatus for detecting a solar cell of a photovoltaic plant. The method includes: obtaining a first infrared image and a second infrared image, where the first infrared image includes infrared image information corresponding to an ambient infrared signal reflected by a to-be-detected solar cell operating in a short-circuit state, the second infrared image includes infrared image information corresponding to an infrared signal emitted by the to-be-detected solar cell operating in a first state and infrared image information corresponding to an ambient infrared signal reflected by the to-be-detected solar cell, and the first state is another state other than the short-circuit state; and detecting, based on the first infrared image and the second infrared image, whether the to-be-detected solar cell has a defect.
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2.发明公开公开(公告)号：US20230231518A1
公开(公告)日：2023-07-20
申请号：US18186022
申请日：2023-03-17
Applicant: Huawei Digital Power Technologies Co., Ltd. , SPIC Qinghai Photovoltaic Industry Innovation Center Co.,Ltd.
Inventor： Jianqiang Wang , Yuandong Meng , Song Wan , Yanzhong Zhang , Feng Chong , Hualong Fan , Jiajia He , Shaopan Hou , Jie Zhang
IPC: H02S50/15
CPC classification number: H02S50/15
Abstract: A method and an apparatus (400) for performing fault detection, are provided includes: controlling, by a power station management system in a preset photovoltaic module order by using an inverter connected to a current to-be-detected photovoltaic module, the current to-be-detected photovoltaic module to be in a target status, and when determining that the current to-be-detected photovoltaic module is in the target status, controlling a mobile image capturing terminal to collect image data of the current to-be-detected photovoltaic module (S201), where the image data is used to detect a fault status of the current to-be-detected photovoltaic module; and when determining that the mobile image capturing terminal obtains the image data of the current to-be-detected photovoltaic module through collection, continuing, by the power station management system, to control, in the preset photovoltaic module order by using an inverter connected to a next to-be-detected photovoltaic module.
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Patent Agency Ranking
公开(公告)号：US11626834B2
公开(公告)日：2023-04-11
申请号：US17553385
申请日：2021-12-16
Applicant: Huawei Digital Power Technologies Co., Ltd.
Inventor： Fei Xu , Xinyu Yu , Kai Xin , Jianqiang Wang
Abstract: A converter and a power backfeed control method applied to a photovoltaic power generation system are provided. The power backfeed control method includes: controlling, according to a backfeed instruction, the converter to enter a backfeed mode, where in the backfeed mode, the converter can transmit energy of the power grid to a selected photovoltaic string with a corresponding number; determining a backfeed control voltage according to the backfeed instruction, and determining a voltage limit in a process of determining the backfeed control voltage; determining an actual backfeed voltage based on the backfeed control voltage and the voltage limit, where the actual backfeed voltage is a smaller one of the backfeed control voltage and the voltage limit; and controlling the converter to output the actual backfeed voltage to the selected photovoltaic string, to enable the selected photovoltaic string to generate an electroluminescent effect.
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公开(公告)号：US12009783B2
公开(公告)日：2024-06-11
申请号：US17473534
申请日：2021-09-13
Applicant: Huawei Digital Power Technologies Co., Ltd.
Inventor： Jianqiang Wang , Song Wan , Yanzhong Zhang , Yongbing Gao , Xinyu Yu
CPC classification number: H02S50/15 , H02H1/0007 , H02H7/20
Abstract: A fault detection apparatus includes an image capture module and a detection module, and the fault detection apparatus is configured to capturing an image of the photovoltaic module in a light emitting state, and performing fault detection on the photovoltaic module based on the image when a signal-to-noise ratio of the image is maximized, to identify a fault type of the photovoltaic module.
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公开(公告)号：US20230421098A1
公开(公告)日：2023-12-28
申请号：US18454211
申请日：2023-08-23
Applicant: Huawei Digital Power Technologies Co., Ltd.
Inventor： Xinyu Yu , Jianqiang Wang , Song Wan , Kai Xin
CPC classification number: H02S50/15 , H02J2300/26 , H02J3/381
Abstract: A photovoltaic cell detection method includes determining a first output power working at a first voltage and a second output power working at a second voltage, where a difference between the first output power and the second output power is less than a power difference threshold, and where both the first output power and the second output power are greater than 0; controlling the photovoltaic cell to work at the first voltage, and obtaining first infrared image information of the photovoltaic cell; and controlling the photovoltaic cell to work at the second voltage, and obtaining second infrared image information of the photovoltaic cell, where both the first infrared image information and the second infrared image information are used to jointly detect whether the photovoltaic cell is faulty.
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公开(公告)号：US11799419B2
公开(公告)日：2023-10-24
申请号：US17533614
申请日：2021-11-23
Applicant: Huawei Digital Power Technologies Co., Ltd.
Inventor： Jianqiang Wang , Song Wan , Yanzhong Zhang , Yongbing Gao
Abstract: In a detection condition determining method, a control center obtains a working parameter value of a target photovoltaic device in a first time length closest to a current time point, where the working parameter value of the target photovoltaic device may be provided for the control center by a photovoltaic inverter coupled to the target photovoltaic device. The control center detects the target photovoltaic device in response to the control center determining, based on the working parameter value, that an environmental parameter value of the target photovoltaic device meets an environmental parameter threshold. Using the method helps reduce operation and maintenance costs of a photovoltaic power station.
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公开(公告)号：US20230260097A1
公开(公告)日：2023-08-17
申请号：US18305171
申请日：2023-04-21
Applicant: Huawei Digital Power Technologies Co., Ltd.
Inventor： Jianqiang Wang , Zhenhuan Shu , Song Wan , Yanzhong Zhang
CPC classification number: G06T7/0002 , G01J5/0859 , B64U10/00 , G01J2005/0077
Abstract: A power station inspection system and a power station inspection method are disclosed. A power station inspection system includes an unmanned aerial vehicle, and an unmanned aerial vehicle flight controller, a central controller, and at least two types of data collection terminals that are disposed on the unmanned aerial vehicle. The central controller is configured to control the unmanned aerial vehicle flight controller, so that the unmanned aerial vehicle flight controller controls flight of the unmanned aerial vehicle. The central controller is further configured to control the at least two types of data collection terminals to collect at least two types of component image data of a power station component in a flight process of the unmanned aerial vehicle.
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