基于磁流变阻尼器的水电站厂房智能减振研究

Study on Intelligent Vibration Control of Hydropower Powerhouse Based on Magneto-rheological Damper

抽水蓄能电站厂房振动问题已成为电站运行和设计中的重要问题。研究提出基于磁流变阻尼器的厂房智能减振方法,基于Bouc-Wen模型通过对ABAQUS的二次开发实现了磁流变阻尼器的被动控制和半主动控制;最后对某已建抽水蓄能电站的发电机层楼板采用磁流变阻尼器进行减振控制研究。结果表明,该方法能够有效减小厂房结构的峰值响应,发电机层的竖向速度和加速响应有效减小到标准值以下,而且半主动控制效果优于被动控制。

The powerhouse vibration of pumped-storage power station has become an important issue for its design and operation. An intelligent vibration control method of powerhouse based on magneto-rheological (MR) damper is proposed, and based on Bouc-Wen model, the passive control and semi-active control of MR damper are implemented through the secondary development of ABAQUS. The application of MR damper in the vibration control of generator floor in a pumped-storage power station is studied as an example. The results show that the proposed method can effectively reduce the peak response of powerhouse, the vertical speed and acceleration response of generator floor can be effectively reduce to below the standard value, and the effect of semi-active control is better than that of passive control.