公开(公告)号：US20230290559A1

公开(公告)日：2023-09-14

申请号：US18319007

申请日：2023-05-17

Applicant: Huawei Digital Power Technologies Co., Ltd.

Inventor： Gewen WANG ,  Haiyang PAN ,  Peng ZHOU

IPC: H01F27/14 ,  H01F27/02

CPC classification number: H01F27/14 ,  H01F27/025 ,  H01F2027/404

Abstract: A prefabricated transformer station, an oil-immersed transformer, and a photovoltaic system, and relates to the field of power distribution technologies. The prefabricated transformer station includes a container housing and the oil-immersed transformer. A transformer room is provided inside the container housing, and a top cover of the transformer room is opened. The oil-immersed transformer is installed in the transformer room, and a height of a top of an oil conservator of the oil-immersed transformer is higher than a height of a side wall of the transformer room. The prefabricated transformer station can provide more space for a fuel tank, so as to improve a capacity of the oil-immersed transformer.

公开(公告)号：US20250080046A1

公开(公告)日：2025-03-06

申请号：US18817671

申请日：2024-08-28

Applicant: Huawei Digital Power Technologies Co., Ltd.

Inventor： Renyu YUAN ,  Zilong LIU ,  Pengyang WANG ,  Peng ZHOU ,  Linchao SUN ,  Yangkun JIN

IPC: H02S50/10 ,  H02S40/32

Abstract: A photovoltaic system and an I-V diagnosis method for a photovoltaic management apparatus. The photovoltaic system includes a power converter and a photovoltaic management apparatus. When an input end of the power converter is configured to connect to a plurality of photovoltaic units, the photovoltaic management apparatus delivers, in a preset time period in one day, an I-V scanning instruction to the power converter in response to that output current average values of the plurality of photovoltaic units at a current moment are in an I-V scanning current interval. When an input end of the power converter is configured to connect to one photovoltaic unit, the photovoltaic management apparatus delivers, in a preset time period, an I-V scanning instruction to the power converter in response to that an output current of the photovoltaic unit at a current moment is in an I-V scanning current interval.

公开(公告)号：US20250079828A1

公开(公告)日：2025-03-06

申请号：US18817537

申请日：2024-08-28

Applicant: Huawei Digital Power Technologies Co., Ltd.

Inventor： Qiang HUANG ,  Yazhu ZHAO ,  Haiyang PAN ,  Peng ZHOU ,  Xishan WANG

IPC: H02H11/00 ,  H02B1/24 ,  H02B1/46 ,  H02J3/32 ,  H02J3/38 ,  H02S40/32

Abstract: A box-type substation, an energy storage power supply system, and a photovoltaic power generation system. The box-type substation includes a low-voltage cabinet, a high-voltage cabinet, a transformer, a first keychain, and a second keychain. When two circuit breakers in the low-voltage cabinet are in a switched-on state, each of the first keychain and the second keychain is locked at a corresponding circuit breaker. Therefore, when maintenance is performed on the transformer, the circuit breakers in the low-voltage cabinet are switched off first to remove the first keychain and the second keychain. Then, the first keychain and the second keychain are used together to switch off a disconnector in the high-voltage cabinet, and the first keychain and the second keychain are locked at the disconnector when the disconnector is in a switched-off state. Mechanical lock logic of the box-type substation is simple with high efficiency.