双扰动条件下水轮机竖向振动传导功率流分析

摘要

Here,the effects of structure parametric disturbances on the dynamic characteristics of a practical hydropower station's powerhouse were analyzed.The power flow analysis method of random parametric structures under double disturbances was deduced based on the analysis of single disturbance,and combining with power flow,Kronecker algebra,Hadamard product and the random perturbation theory.The application of the stochastic perturbation method was expanded.The correctness and feasibility of these formulas were validated by analyzing a hydropower station's powerhouse vibration model.The study provided a new way to accurately analyze the transfer paths of vertical vibration in hydropower stations.%为分析水电站实际振动的复杂扰动对结构动力特性的影响，在单扰动分析的基础上，结合功率流、Krone-cker 代数、Hadamard 积及随机摄动理论，推导了双扰动条件下的功率流随机参数结构分析方法，并应用于水电站竖向振动传导分析。通过水电站厂房结构振动分析表明，双扰动分析方法的结果是正确的，可分析各参数扰动对能量传导率的灵敏度问题。据此可更全面的分析水电站竖向振动的传递路径，同时为解决复杂扰动的水电站振动传递路径系统分析提供一种新的解决思路。