The large amplitude poweroscillation is harmful to reactor safety and is not allowed.
这种现象对反应堆的安全十分不利，是不能允许的。
2
Power System forced poweroscillation is a kind of low frequency oscillation caused by persistent periodic small disturbance.
电力系统强迫功率振荡为持续的周期性小扰动所引起低频振荡现象。
3
Following up the change of some parameters in ac systems, it can regulate the active power transmitted by DC link and damp poweroscillation in systems.