核电厂应急柴油机组低频振荡及应对措施

Low Frequency Oscillation and Solution for the Emergency Diesel Generator of Nuclear Power Plant

利用单机-无穷大系统Phillips-Heffron模型阐述了柴油发电机组低频振荡的产生原因,对无功调节影响功角振荡的机理进行了分析,解释了低频振荡的物理本质,指出适当增加机组无功以及增加本地负荷是抑制振荡和加速振荡收敛的有效手段,并对应急柴油机组低频振荡的预防方法提出了建议。

This text introduces the low frequency oscillation of the emergency diesel generator and its reasons by means of Phillips-Heffron model,analyzes the theory of reactive power influence on the low frequency oscillation,explains the physics essence of the low frequency oscillation,draws a conclusion that increasing EDG reactive power and local load is the effective method to handle the oscillation,and give suggestions to prevent the low frequency oscillation.