【摘要】 为了更好地分析了解特高压混合型气体绝缘开关(HGIS)的抗震性能,并进一步对其进行改善,选取了四种地震波对1 100 kV HGIS的整体结构进行动力特性和地震反应谱分析,得到了结构的自振频率和振型特征.在分析过程中,考虑到特高压设备固有频率与地震波主频率相近,会发生拟共振的情况,采用由正弦共振三波及正弦共振调幅五波组成的调幅波串进行计算,分析整体结构的机械强度和抗震性能.计算结果显示,1 100 kV HGIS在该组地震波作用下具有一定的安全裕度,为特高压设备抗震性能的分析提供有效数据.更多还原

【Abstract】 In order to analyze and understand the seismic performances of ultra-high voltage(UHV) hybrid gas insulation switch(HGIS) as well as further improve its seismic performance,the analysis on the dynamic characteristics and seismic response spectra for the integral structure of 1 100 kV HGIS was conducted under four seismic waves.In addition,the natural frequency and mode characteristic of vibration for the structure were acquired.In the analysis process,it was considered that the natural frequency of UHV equipment and the main frequency of seismic waves are so similar that the quasi resonance will occur,and thus,the calculation was performed with adopting the amplitude-modulated wave string composed of both sinusoidal-resonant three-wave and modulated sinusoidal-resonant five-wave.In addition,the mechanical strength and seismic performance of integral structure were analyzed.The calculated results show that the 1 100 kV HGIS under the proposed seismic waves has certain safety margin,which can provide the effective data for the analysis on the seismic performance of UHV equipment.更多还原