公开(公告)号：US20230121284A1

公开(公告)日：2023-04-20

申请号：US17967988

申请日：2022-10-18

Applicant: Huawei Digital Power Technologies Co., Ltd.

Inventor： Xiufeng ZHANG ,  Xiaogang GUO ,  Yazhu ZHAO ,  Jichang HUANG ,  Xiaokang TIAN ,  Jianfei MA

IPC: H01H19/14 ,  H01H19/20 ,  H01H3/10 ,  H01H83/20

Abstract: A switch, a power conversion apparatus, and a power supply system. The power supply system includes a control unit, a switch, a direct current source, and a power conversion unit. The switch is electrically connected between the direct current source and the power conversion unit, and the control unit is configured to send a switch-off signal to the switch when a fault occurs on the direct current source or the power conversion unit. The switch includes a contact component, a trip-free structure, and a knob that are sequentially disposed in a stacked manner in a first direction. A trip unit of the trip-free structure is configured to receive the switch-off signal, to unlock the trip unit from the cradle. The cradle drives the connecting rod structure to move, to separate the moving contact from the fixed contact.

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.