硬管母线连接的1000kV避雷器和电容电压式互感器抗震性能振动台试验

发布时间：2018-12-14 07:07

【摘要】：为研究地震作用下硬管母线连接特高压电气设备之间的动力相互作用,进行了由硬管母线连接的1 000 k V避雷器和电容电压式互感器(CVT)组成的互连耦合结构体系的振动台试验。通过白噪声扫频和抗震试验,测定了设备频率以及关键部位的位移、应变和加速度响应。对比分析等效单体设备与互连耦合结构的地震响应,获得了硬管母线对电气设备地震响应的影响规律。结果表明:与等效单体设备相比,互连耦合结构的设备频率、位移和应变响应均有所降低,可采用在单体设备顶端施加配重的方式来等效简化互连耦合结构;由于硬管母线和滑动金具阻尼耗能的影响,高频互感器设备的地震响应降幅较大,其频率和应变响应的降幅均为21%。互连耦合结构在双向激励下的设备地震响应与单向激励时相比有所放大,放大倍数在1.19~1.22之间。
[Abstract]:In order to study the dynamic interaction between hard tube busbar and UHV electrical equipment under seismic action, The shaking table test of the interconnected coupled structure system composed of a 1 000 kV arrester connected by a hard tube bus and a capacitive voltage transformer (CVT) is carried out. The frequency of the equipment and the displacement, strain and acceleration responses of the key positions were measured by the white noise sweep frequency and seismic test. The effect of hard pipe busbar on the seismic response of electrical equipment is obtained by comparing and analyzing the seismic response of the coupling structure of equivalent monolithic equipment and interconnection. The results show that the frequency, displacement and strain response of the interconnect coupling structure are lower than that of the equivalent monolithic equipment, and the coupling structure can be reduced by applying the weight at the top of the monolithic equipment. Due to the influence of hard tube busbar and sliding metal, the seismic response of high frequency transformer equipment is decreased by 21. 1%, and the frequency and strain response of high frequency transformer equipment decrease by 21. 2%. The seismic response of the interconnect coupling structure under bidirectional excitation is larger than that of unidirectional excitation, and the magnification is between 1.19 and 1.22.
【作者单位】：中国电力科学研究院;国家电网公司交流建设部;
【基金】：国家电网公司工程专项(GCB11201201802)~~
【分类号】：TM862;TM451.2

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