软母线连接电气设备地震响应定量分析

通过母线连接的电气设备与独立设备地震响应存在较大差异。为定量研究软母线连接体系对设备的地震响应，将软母线简化为悬索结构，建立耦联体系等高设备和单体设备的地震运动方程组，采用龙格-库塔方法计算得到广泛参数下的位移响应比，并通过基于后向消去法的多元回归分析对各关键参数的影响进行量化，得到软母线耦联等高设备地震位移响应比公式。通过与实际振动台试验数据对比验证了该响应比公式的准确性。研究结果可为实际电气设备及变电站的抗震可靠性分析提供参考。

Quantitative analysis of seismic response of electrical equipment connected by flexiblebus

The seismic response of anequipment connected by flexiblebus is different from an independent equipment under earthquake. To quantitatively study the effect of the flexiblebus connection system to the equipment, the flexiblebuswas simplified as a cable, then the motion equations for analyzing the dynamic internation between the equipment and the cable was established and solved by using the Runge-Kutta method. The influence of each key parameter was quantified by using multiple regression analysis based on the backward elimination method to obtain the response ratio formula connected by flexible bus. The accuracy of the response ratio formula was verified by comparing with actual shaking table test data. The results obtained in this research can provide reference for seismic reliability analysis of actual electrical equipment and substations.