| 摘要 |
The present invention provides a gas circuit breaker for switching between interrupting and starting the flow of current in an electric power system. The gas circuit breaker is provided with: an airtight container filled with an arc-suppressing gas; a pair of fixed arc electrodes (30a, 30b) disposed facing each other inside the airtight container; a trigger electrode (31) movably disposed between the fixed arc electrodes (30a, 30b) for generating an arc discharge by moving; a pressurizing chamber (35) for compressing the arc-suppressing gas using a pressurizing means and increasing pressure therein; and a pressure storage chamber (36) for storing the pressurized arc-suppressing gas together with the pressurizing chamber (35). The trigger electrode (31) switches the pressure storage chamber (36) between being closed and being open. In the first half of a current stoppage period, the pressure storage chamber (36) is closed, and in the latter half of the current stoppage period, the pressure storage chamber (36) is opened. The arc-suppression gas in the pressure storage chamber (36) is guided to the arc discharge (4). |
