地震自动停堆设备在田湾核电站三期的实践

Automatic shutdown equipment of nuclear power plant

田湾核电站三期工程地震仪表系统通过发出地震警示及地震自动停堆触发信号来降低地震灾害对核电站带来的危害,该信号在多样化保护系统中进行逻辑判断,若满足逻辑条件则触发自动停堆信号,通过断开停堆断路器和棒控电源柜断电两种停堆方式,实现可靠停堆。

In order to reduce the losses caused by earthquake disasters, the phase Ⅲ project of Tianwan nuclear power plant has designed a seismic instrument system. The seismic warning, and automatic shutdown trigger signals sent by the system are sent to the diversified protection system. The signal is logically judged in the diversified protection system. If the logic conditions are met, an automatic shutdown signal will be sent. The reliable shutdown can be realized by two shutdown modes: disconnecting the power supply through the shutdown circuit breaker and the rod control power supply cabinet.