公开(公告)号：US20230170842A1

公开(公告)日：2023-06-01

申请号：US18160163

申请日：2023-01-26

Applicant: Huawei Digital Power Technologies Co, Ltd.

Inventor： Song Wan ,  Qinwei Liu ,  Wuben Sun ,  Yanzhong Zhang ,  Kai Liu

IPC: H02S20/32 ,  H02S40/12 ,  H02S40/30 ,  G06V10/764 ,  G06V10/774

CPC classification number: H02S20/32 ,  H02S40/12 ,  H02S40/30 ,  G06V10/764 ,  G06V10/774

Abstract: An image/video capture apparatus is provided, to capture image data of a photovoltaic panel (101) and surroundings, and a controller (502) recognizes a category corresponding to the image data, and generates different instructions to control rotation of a photovoltaic tracker (102), to remove dust or snow accumulating on the photovoltaic panel (101). This does not need continuous heating, but is simple and efficient, saves electric energy, and resolves a technical problem that a conventional snow removal method of heating has low efficiency and wastes electric energy. In addition, a corresponding controller (1200) is further provided.

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

IPC: H02S50/00 ,  H02S40/32

CPC classification number: H02S50/00 ,  H02S40/32

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.

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

IPC: G06T7/00 ,  G01J5/08 ,  B64U10/00

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.

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

IPC: H02S50/15 ,  H02S40/32 ,  H04N5/33

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.

公开(公告)号：US12021390B2

公开(公告)日：2024-06-25

申请号：US18145830

申请日：2022-12-22

Applicant: Huawei Digital Power Technologies Co., Ltd.

Inventor： Min Liu ,  Shuchao Wang ,  Yao Chang ,  Song Wan

IPC: H02J3/46

CPC classification number: H02J3/466 ,  H02J2300/26

Abstract: This application discloses a photovoltaic station and a power coordination method for a photovoltaic station. Sample inverters are disposed in arrays requiring power adjustment in the photovoltaic station. Real-time active power of sample inverters in each array is obtained. Then, an available active capacity and an available reactive capacity of the array and available active capacities and available reactive capacities of all the arrays requiring power adjustment are obtained based on the real-time active power of the sample inverters. Finally, active power and reactive power of the photovoltaic station are separately allocated to the N arrays based on the available active capacities and the available reactive capacities respectively corresponding to the N arrays. Because the sample inverters come from the arrays requiring power adjustment, differences between inverters and differences between the arrays can be fully exploited, and the available active capacities of the arrays can be more accurately obtained by using the sample inverters. Therefore, a more accurate available power capacity of the photovoltaic station is obtained by using relatively accurate available active capacities.

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.

公开(公告)号：US12199566B2

公开(公告)日：2025-01-14

申请号：US17896730

申请日：2022-08-26

Applicant: Huawei Digital Power Technologies Co., Ltd.

Inventor： Song Wan ,  Yongbing Gao ,  Xun Wang ,  Yanzhong Zhang ,  Zhipeng Wu

IPC: H02S50/10 ,  H02S40/32

Abstract: A linkage protection system includes an inverter, an anti-potential-induced degradation (PID) apparatus, and an insulation-monitoring apparatus. The anti-PID apparatus is configured to inject a voltage into an input end or an output end of the inverter, to increase or decrease a voltage-to-earth of a photovoltaic system. The insulation-monitoring apparatus is configured to inject an insulation-monitoring voltage into a direct current (DC) side or an alternating current (AC) side of the inverter. The anti-PID apparatus and the insulation-monitoring apparatus directly or indirectly communicate with each other, to learn of information about whether a peer apparatus is operating, and perform linkage control. The anti-PID apparatus and the insulation-monitoring apparatus operate in different time periods.

公开(公告)号：US20240146069A1

公开(公告)日：2024-05-02

申请号：US18410092

申请日：2024-01-11

Applicant: Huawei Digital Power Technologies Co., Ltd.

Inventor： Yanzhong Zhang ,  Song Wan ,  Hongmiao Fang

IPC: H02J3/38 ,  H02J3/00

CPC classification number: H02J3/388 ,  H02J3/0012 ,  H02J3/381 ,  H02J2300/24

Abstract: A power supply system includes at least one group of power supply modules. The power supply module includes a first string, a first residual current detection circuit, an inverter circuit, and a first controller. The first residual current detection circuit is connected between the first string and an input end of the inverter circuit, and an output end of the inverter circuit is connected to an alternating current power grid. When a first residual current value detected by the first residual current detection circuit is greater than a first preset residual current threshold, the first controller controls the first string to be disconnected from the inverter circuit, or controls the inverter circuit to be disconnected from the alternating current power grid.

公开(公告)号：US20230208147A1

公开(公告)日：2023-06-29

申请号：US18145830

申请日：2022-12-22

Applicant: Huawei Digital Power Technologies Co., Ltd.

Inventor： Min Liu ,  Shuchao Wang ,  Yao Chang ,  Song Wan

IPC: H02J3/46

CPC classification number: H02J3/466 ,  H02J2300/26

Abstract: This application discloses a photovoltaic station and a power coordination method for a photovoltaic station. Sample inverters are disposed in arrays requiring power adjustment in the photovoltaic station. Real-time active power of sample inverters in each array is obtained. Then, an available active capacity and an available reactive capacity of the array and available active capacities and available reactive capacities of all the arrays requiring power adjustment are obtained based on the real-time active power of the sample inverters. Finally, active power and reactive power of the photovoltaic station are separately allocated to the N arrays based on the available active capacities and the available reactive capacities respectively corresponding to the N arrays. Because the sample inverters come from the arrays requiring power adjustment, differences between inverters and differences between the arrays can be fully exploited, and the available active capacities of the arrays can be more accurately obtained by using the sample inverters. Therefore, a more accurate available power capacity of the photovoltaic station is obtained by using relatively accurate available active capacities.

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

IPC: H02H7/00 ,  H02H1/00 ,  H02H7/20 ,  H02S50/15

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.