公开(公告)号：EP4429055A1

公开(公告)日：2024-09-11

申请号：EP22913399.6

申请日：2022-08-17

申请人： State Grid Smart Grid Research Institute Co., Ltd. ,  State Grid Corporation of China

发明人： ZHOU, Wandi ,  HE, Zhiyuan ,  LIU, Yuan ,  ZHANG, Sheng ,  GAO, Chong ,  LI, Pengzhi

IPC分类号： H02H7/26

CPC分类号： H02H7/26

摘要： Disclosed in the present application are a self-energy-taking hybrid direct-current circuit breaker and an application method therefor. In the self-energy-taking hybrid direct-current circuit breaker, a breaking branch is connected to a through-current branch in parallel, a first end of a grounding branch is connected to the breaking branch, and a second end of the grounding branch is grounded. When a direct-current system operates stably, the through-current branch conducts a steady-state running current of the direct-current system, and when the direct-current system breaks down, a self-energy-taking capacitor in the breaking branch assists a power electronic device in achieving the breaking of a fault current.

公开(公告)号：EP3490091A1

公开(公告)日：2019-05-29

申请号：EP17830283.2

申请日：2017-05-22

申请人： GLOBAL ENERGY INTERCONNECTION RESEARCH INSTITUTE CO., LTD. ,  State Grid Corporation of China

发明人： TANG, Guangfu ,  HE, Zhiyuan ,  ZHOU, Wandi ,  WEI, Xiaoguang ,  ZHANG, Sheng ,  ZHAO, Yan ,  LUO, Xiang ,  LI, Pengzhi

IPC分类号： H02H7/26

摘要： A novel combined direct current circuit breaker is provided, which includes a transfer branch, an energy absorption branch, at least two primary branches and at least two secondary branches; the transfer branch is connected in parallel with the energy absorption branch; the primary branches are in one-to-one correspondence with the second branches; the primary branches are connected with direct current outgoing lines of a direct current busbar in a high-voltage direct current power transmission system; the secondary branches are connected in series with the transfer branches and then connected in parallel with two ends of the primary branches corresponding to the secondary branches. Compared with the conventional art, the novel combined direct current circuit breaker and an application method thereof improve application economy of the high-voltage direct current circuit breaker in a flexible direct current power grid, and are favorable for construction of the direct current power grid and popularization and application of a hybrid direct current circuit breaker.

公开(公告)号：EP3913805A1

公开(公告)日：2021-11-24

申请号：EP19910433.2

申请日：2019-11-12

申请人： Global Energy Interconnection Research Institute Co., Ltd ,  State Grid Corporation of China

发明人： GAO, Chong ,  ZHOU, Wandi ,  WEI, Xiaoguang ,  WANG, Huafeng ,  ZHANG, Sheng ,  LI, Pengzhi

IPC分类号： H03K17/51 ,  H01H71/00

摘要： A full-bridge module, a hybrid direct current circuit breaker of a full-bridge module and an application method, the full-bridge module comprising: two power electronic units (1, 2, 3, 4), two diodes (5, 6), a resistor (R1) and a capacitor (C); the two power electronic units (1, 2, 3, 4) are in reverse series connection to form an upper bridge arm; the two diodes (5, 6) are in common anode series connection or common cathode series connection to form a lower bridge arm; and once the resistor (R1) and the capacitor (C) are in parallel connection, same are connected between the upper bridge arm and the lower bridge arm.

公开(公告)号：EP3490091B1

公开(公告)日：2020-09-09

申请号：EP17830283.2

申请日：2017-05-22

申请人： GLOBAL ENERGY INTERCONNECTION RESEARCH INSTITUTE CO., LTD. ,  State Grid Corporation of China

发明人： TANG, Guangfu ,  HE, Zhiyuan ,  ZHOU, Wandi ,  WEI, Xiaoguang ,  ZHANG, Sheng ,  ZHAO, Yan ,  LUO, Xiang ,  LI, Pengzhi

IPC分类号： H02H7/26 ,  H02H3/087 ,  H02J3/36