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    • 8. 发明公开
    • VOLTAGE-SOURCE MULTI-LEVEL CONVERTER, DIRECT-CURRENT POWER TRANSMISSION SYSTEM AND FAULT PROCESSING METHOD AND DEVICE
    • 多电平电压源逆变器,DC输电系统和故障处理方法和装置
    • EP3145071A1
    • 2017-03-22
    • EP15788904.9
    • 2015-02-05
    • NR Electric Co., Ltd.NR Engineering Co., Ltd
    • SHEN, GuorongTIAN, JieCAO, DongmingLI, HaiyingDONG, YunlongWANG, NannanLIU, HaibinLU, Yu
    • H02M7/483H02J3/36
    • H02J1/00H02J3/36H02M1/32H02M7/483H02M2007/4835
    • A voltage-source multi-level converter, including a phase unit (0). The phase unit (0) includes a first bridge arm (100) and a second bridge arm (200), where a first terminal of the first bridge arm (100) is a first DC terminal (P) of the phase unit (0), and a first terminal of the second bridge arm (200) is a second DC terminal (N) of the phase unit (0); a second terminal of the first bridge arm (100) and a second terminal of the second bridge arm (200) are shorted together, as an alternating-current terminal (A) of the phase unit (0); the first bridge arm (100) includes first modules (101) and one first reactor (102) connected in series, where a first terminal of the first reactor (102) is connected to the alternating-current terminal (A), a second terminal (X1) thereof is connected to a first terminal of the first modules (101), and a second terminal of the first modules (101) is connected to the first DC terminal (P); the second bridge arm (200) includes second modules (201) and one second reactor (202) connected in series, where a first terminal of the second reactor (202) is connected to the alternating-current terminal (A), a second terminal (X2) thereof is connected to a first terminal of the second modules (201), and a second terminal of the second modules (201) is connected to the second DC terminal (N); and a parallel fault shunt circuit (300) is connected between the second terminals (X1, X2) of the first reactor (102) and the second reactor (202). Also disclosed are a DC power transmission system and a fault processing method and device.
    • 一种电压源多电平变换器,还包括一个相位单元(0)。 相位单元(0)包括:第一桥臂(100)和第二桥臂(200),其中所述第一桥臂(100)的第一端子是相位单元的第一直流端子(P)(0) 和第二桥臂(200)的第一端子是相位单元(0)的第二直流端子(N); 第一桥臂(100)和所述第二桥臂(200)的第二端子的第二端子被短接在一起,如在相位单元(0)的交流端子(A); 第一桥臂(100)包括串联连接的,其中所述第一反应器(102)的第一端子被连接到交流输出端子(A)第一模块(101)和一个第一反应器(102),第二端子 (X1)被连接到所述第一模块(101)的第一端子,并且所述第一模块(101)的第二端子连接到所述第一DC端子(P); 第二桥臂(200)包括串联连接的,其中所述第二反应器(202)的第一端子被连接到交流输出端子(A)第二模块(201)和一个第二反应器(202),第二端子 (X2)被连接到所述第二模块(201)的第一端子,和第二模块(201)的第二端子连接到所述第二DC端子(N); 和并联故障分流电路(300)被连接在第一反应器(102)和第二反应器(202)的第二端(X1,X2)之间。 所以圆盘游离缺失是DC输电系统和故障处理方法及装置。