公开(公告)号：US20210175705A1

公开(公告)日：2021-06-10

申请号：US17061235

申请日：2020-10-01

申请人： STATE GRID JIANGSU ELECTRIC POWER CO., LTD. ,  STATE GRID JIANGSU ELECTRIC POWER CO., LTD. RESEARCH INSTITUTE ,  STATE GRID CORPORATION OF CHINA ,  JIANGSU ELECTRIC POWER RESEARCH INSTITUTE CO., LTD.

发明人： Chenyu ZHANG ,  Yubo YUAN ,  Jinggang YANG ,  Shu CHEN ,  Xiaodong YUAN ,  Jian LIU ,  Mingming SHI ,  Qun LI ,  Xuefeng GE ,  Huiyu MIAO ,  Ruihuang LIU ,  Yunlong JIANG

IPC分类号： H02H7/26 ,  H02H1/00

摘要： Disclosed is a fault current controller for a direct current power grid, which includes a primary circuit and a controller. The primary circuit includes an inductor, a filter capacitor, a resistor, an IGBT switch, a diode, a contactor and a Hall current sensor. The inductor, a first resistor and a second contactor are connected in series and are connected to a first contactor in parallel. A first branch including a second resistor and a first diode, a second branch including a third resistor and a second diode, and the inductor are connected in parallel; the filter capacitor, the IGBT switch and the first resistor are connected in parallel. The Hall current sensor is arranged in the series circuit. The controller controls the IGBT switch and the two contactors in the primary circuit to form different on-off combinations.