水电站机组与厂房结构耦合动力系统振动传递路径识别

针对水轮发电机组与厂房结构相互作用耦合动力系统的振动传递路径及传递方向反分析问题,提出基于信息流理论的延时传递熵识别方法。结合数值模拟分析,研究基于传递熵的水电站振动信息传递路径识别方法;结合现场测试资料开展对原型水电站中不同振源信号传递方向、传递途径识别。为进一步分析水电站振动传递规律、振源位置及内在机理提供新的时域识别方法及相关研究结论。

Identification of vibration transfer path for coupling system of water turbine generator set and power house

The hydropower station is coupling field of the vibration of water turbine generator set and power house, which shows the superimposed and coupled signals of multiple vibration sources. In this paper, the time-delayed transfer entropy is proposed to identify the transport directionality and path of the vibration information. Firstly, the identifying method for the information transfer in hydropower station based on the transfer entropy is studied by a simulated model. Next, with the field experiments, the actual paths of different vibration sources are identified and analyzed. The paper presents a new time-field identifying method and findings for the study of vibration regularity, location and inherence in the hydropower station.