In order to definite the seismic response regularities of the 110 k V capacitor bank and to improve seismic safety of UHV substation

we experimentally studied a model of 110 k V capacitor bank in UHV substation by shaking table.The dynamic characteristics of the model and the acceleration

the displacement

the strain of key parts were measured by shaking table test.The test results show that the primary frequencies in two horizontal directions are 2.69 Hz and 3.39 Hz

which are in the range of the dominant ground frequencies.The structure of the specimen can accelerate the amplification

and there is a nonlinear relationship between the amplification and the height.Under the earthquake action of which the basic earthquake acceleration is 0.2g

the maximum strain appears at the bottom of the insulator

and the maximum stress is 25.10 MPa which is lower than the failure stress of the insulator.It is found that the seismic vulnerability of 110 k V capacitor bank is definite.The seismic key location of the equipment is bottom insulator.The results offer data support for seismic research of capacitor bank.