660 MW超临界空冷机组不稳定振动原因分析及处理

摘要

To solve unstable vibration of one supercritical air-cooled 660 MW turbine,the abnormal vibration characteris-tics is studied.It's found out that the primary cause of the ab-normal vibration is steam-induced vibration.The specific treatment is introduced.%针对某超临界空冷660 MW机组不稳定振动的问题，分析机组异常振动情况，认为汽流激振是造成不稳定振动的主要原因，并提出处理措施。