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干式电抗器是变电站中的复杂电气设备,与其他设备相比这种设备在地震作用下的动力响应更为复杂。对由复合材料构成支撑结构的110k V干式电抗器进行抗震性能振动台试验研究,通过白噪声扫频和抗震试验,测定设备频率、阻尼以及关键部位的位移、应变和加速度响应,研究电抗器设备在地震作用下的地震响应规律。试验结果表明:复合材料电抗器设备在试验前后,频率、阻尼等动力特性变化较大;在不同强度地震波作用下设备的地震响应基本呈线性变化,结构基本呈线性特性;设备最大应变发生在设备支架根部,设备支架根部为最危险截面;复合材料由于刚度较弱,地震位移响应较大,在判定设备抗震性能时应考虑位移响应对设备电气功能的影响。
Dry reactors, which are complex electrical equipment in substations, have a more complex dynamic response to earthquakes than other equipment. The shaking table tests of the 110k V dry reactors made of composite materials with support structure are carried out. The frequency, damping and the displacement, strain and acceleration responses of the key parts are measured by white noise sweep and seismic tests. Earthquake response of equipment under earthquake. The experimental results show that the dynamic characteristics of the composite reactor device such as frequency and damping vary greatly before and after the test. The seismic response of the device changes linearly with the seismic wave of different intensities, and the structure is basically linear. The maximum strain of the device occurs in the equipment The root of the stent and the root of the stent are the most dangerous sections. Due to the weak stiffness of composite materials and the large earthquake displacement response, the influence of the displacement response on the electrical functions of the equipment should be taken into account when determining the seismic performance of the equipment.