| 摘要 |
FIELD: electricity.SUBSTANCE: device (13) to interrupt electric current passing via a transmission line (14) or to distribute energy, comprises parallel connection of the main breaker (8) and a non-linear resistor (11). The main breaker (8) comprises at least one powerful semiconductor switch of the first current direction of current. The device (13) additionally comprises a serial connection of a high-speed switch (10), comprising at least one mechanical switch and an auxiliary breaker (9), which has lower resistance in open condition, compared to the main breaker (8) and comprises at least one powerful semiconductor switch of the first current direction. This serial connection is connected in parallel to the parallel connection. In the method to use the device (13) at first the auxiliary breaker (9) is opened, thus switching the current to the main breaker (8), afterwards they open the high-speed switch (10), and then they open the main breaker (8), thus switching current to the non-linear resistor (11). The device (13) may additionally be used in the current limitation layout.EFFECT: invention provides for DC interruption with reduction of losses in stable condition in powerful semiconductor breakers.39 cl, 12 dwg |
