来宾B电厂2号机在2014年恢复性大修后的开机过程中，在机组冲转过临界转速时，高中压缸前后轴承发生激烈振动。分析了该振动的故障特征和机理，找到引起振动的原因，利用动平衡的手段和方法，解决振动问题，机组轴承轴振动已达到合格标准。%Unit 2 turbine-generator occurred high vibration while speed-up passing the critical speed during the final thorough overhaul commissioning test .The report analysis the vibration characteristic and find out the root cause .After the high speed dynamic balancing , the high vibration level has been decreased , the turbine-generator unit vibration had been acceptable .
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