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CN104953538B 用于直流切断的装置以及方法 有权

用于直流切断的装置以及方法
摘要：
实施方式的直流切断装置具有通电路径和与该通电路径并联连接的电流切断路径。在通电路径中，第1开闭器和第2开闭器串联连接，电阻器与第2开闭器并联连接。第1开闭器不利用半导体开关切换电流的导通、不导通，具有规定的第1耐压性。第2开闭器不利用半导体开关切换电流的导通、不导通，具有耐压性低于所述第1耐压性的第2耐压性。电阻器保护该第2开闭器不受可能施加到所述第2开闭器的电压破坏。另外，在电流切断路径中半导体开关和电流源串联连接，并且电流切断路径具有相对该半导体开关和该电流源的串联连接并联连接的非线性电阻器。
摘要（英）：

A direct-current interrupter in an embodiment includes a current-carrying path (10) and a current-interrupting path (30) connected in parallel to the current-carrying path. The current-carrying path includes a first switch (11) and a second switch (12) connected in series and a resistor (13) connected in parallel to the second switch. The first switch has a predetermined first withstand voltage property and switches between conduction and non-conduction of current by using no semiconductor switch. The second switch has a second withstand voltage property lower in withstand voltage property than the first withstand voltage property and switches between conduction and non-conduction of current by using no semiconductor switch. The resistor protects the second switch from voltage to be applied to the second switch. The current-interrupting path includes a semiconductor switch (31) and a current source (41) connected in series and a non-linear resistor (32) connected in parallel to a series connection of the semiconductor switch and the current source. Fig. 1

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