The origin of the unit vibration in small guide vane opening is analyzed when the unit is closing and the optimal scheme of the unit closing law is suggested. 本文擬對關(guān)機過(guò)程中導葉小開(kāi)度振動(dòng)原因進(jìn)行分析,并對機組關(guān)閉規律的優(yōu)化方案及實(shí)施過(guò)程進(jìn)行介紹。