复合外套型特高压交流CVT抗震与减震试验研究

为研究复合外套型电气设备的抗震性能与安装减震装置后的减震效果,对其进行特高压交流CVT地震模拟振动台试验研究,分析设备的动力特性与地震响应。白噪声试验结果表明试验设备安装减震器后其结构第一阶频率由1.07Hz略降低至1.04Hz,即减震装置对结构的整体刚度影响较小;人工波试验中原结构在地震动峰值加速度0.2g(PAG=0.2g)抗震试验中设备最大应力与位移响应为46.33 MPa与349.12mm,减震结构在PAG=0.5g抗震试验中,设备最大应力与位移响应为27.64 MPa与330.06mm,设备安装减震装置后抗震性能得到显著提升。试验研究结果可为复合材料电气设备抗震性能研究与减震装置应用提供参数数据。

Experimental Study on the Seismic Performance of Polymeric-Housed UHVAC Capacitor Voltage Transformers

In this paper, the seismic performance of polymeric-housed electrical equipment and the vibration absorption effect of dampers are investigated. To this end, a shaking table test was carried out on a polymeric-housed UHVAC capacitor voltage transformer, and the dynamic characteristics and seismic response of the equipment was analyzed throughout. White noise test results show that the first-order frequency of the equipment slightly reduced from 1.07 to 1.04 Hz after the dampers were mounted, which means that the damping device had a slight influence on the overall stiffness of the structure. The maximum stress and displacement response of the original structure under the input of artificial seismic waves with a peak ground motion acceleration of 0.2g (PAG=0.2g) were 46.33 MPa and 349.12 mm, respectively. The maximum stress and displacement response of a structure with PAG=0.5g after damper installation were 27.64 MPa and 330.06 mm, respectively. Based on simplified equivalent analysis, the reduction rates of the maximum stress and displacement are respectively 62.34% and 49.33% when PAG=0.3g, and 76.14% and 62.18% when PAG=0.5g. This shows that the seismic performance of equipment greatly improves after damper installation. This research can provide parameter data for seismic performance analysis of composite electrical equipment and the application of damper devices.