GIS运输振动与冲击分析研究

Analysis and Research of GIS Transportation Vibration and Shock

以某126 kV GIS为研究对象,对其运输振动与冲击特性进行分析研究。首先建立GIS运输单元三维实体结构模型并进行合理的简化,使用ANSYS Workbench软件对GIS运输单元进行振动工况下带有预应力的模态分析与随机振动分析,得到固有频率和各部件的机械强度。分析结果显示:各部件均满足机械强度要求,其中底座的最大等效应力为153.5 MPa,对应的安全系数最小为1.53;其次对GIS运输单元进行异常冲击工况下的试验及仿真分析。结果显示:在瞬时冲击加速度达到6.7 g时,GIS设备仍能保证性能完好,抗冲击性能高于产品要求(加速度值3 g)的标准。通过对GIS在振动工况和冲击工况下的分析研究,较全面地考核了GIS的运输性能,对确保GIS的运输安全具有非常重要的现实意义。

Taking a certain type of 126 kV GIS as the research object,the transportation vibration and shock characteristics are analyzed and studied.The three-dimensional solid structure model of GIS transportation unit is established,and the modal analysis and random vibration analysis with prestress under vibration conditions are carried out by using ANSYS Workbench software to obtain its natural frequency and mechanical strength of each component.The analysis results show that the maximum equivalent stress of the base is 153.5 MPa and the minimum safety factor is 1.53.The experimental research on the GIS transportation unit under abnormal shock conditions shows that the GIS equipment can still ensure good performance when the instantaneous shock acceleration reaches 6.7 g,and the shock resistance is higher than the acceleration value required by the product is less than 3 g standard.Through the analysis and research of GIS under vibration and shock conditions,the transportation performance of GIS is evaluated comprehensively,which has very important practical significance to ensure the transportation safety of GIS.