输电塔的风振控制研究  

Research on Wind-induced Vibration Control of Transmission Tower

作　　者：孔伟[1] 代晓光[1] 杨振伟[1] 

机构地区：[1]东北电力大学,吉林吉林132012

出　　处：《吉林电力》2009年第4期18-21,共4页Jilin Electric Power

摘　　要：鉴于输电塔是一种对风荷载非常敏感的结构,容易发生振动疲劳损伤和极端条件下的倒塌破坏。为此,从现代控制理论出发,将设置有粘弹性阻尼器的结构作为控制系统,建立其数学模型及状态方程,施加模拟的风荷载,在SIMULINK环境下进行动态仿真,得到受控结构在风荷载作用下的动态反应,然后将受控结构与无控结构的塔顶质点的动力响应进行比较。结果表明,粘弹性阻尼器可以有效减小输电塔的振动反应,SIMULINK提高了输电塔风振控制仿真的质量和效率。Transmission tower is a structure that is very sensitive to wind load, and is liable to induce vibration fatigue damage and collapse damage in extreme conditions. Therefore, according to the modern control theory and regarding structure with viscoelastic dampers as a control system, its mathematical model and state equation imposed by wind load are established. Dynamic simulation in SIMULINK environment is carried out, and the dynamic responses of the controlled structure are obtained, and then the overhead particle＇ s dynamic responses of the controlled structure and non-controlled structure are compared. The result shows that the viscoelastic dampers can effectively reduce the responses of transmission tower and SIMULINK can improve quality and efficiency of wind-induced vibration control simulation of transmission tower.

关 键 词：风振控制 输电塔 粘弹性阻尼器 SIMULINK 动态仿真 

分 类 号：TM753[电气工程—电力系统及自动化]