In order to improve the seismic safety of ultra high voltage（UHV） porcelain arrester. First

we proposed a structural design scheme of standard porcelain bushing for UHV lightning arrester based on the method of structural seismic optimization

thus the seismic safety factor was increased from original 1.68 in the 0.2 g（g=9.81 m/s

2

） horizontal seismic acceleration test to 1.73 of the new structure in the 0.3 g horizontal seismic acceleration test. Second

we simulated and analyzed the shock absorption of the UHV standardization lightning arrester with shear-type lead damper performance parameters. Last

we conducted the earthquake simulation shaking table tests of the UHV porcelain bushing with the shear-type lead dampers

whose mod

el was got from the results of simulation analysis. Compared with non-damping in the white noise test structure

fundamental frequency of the damping structure were reduced by 2.76%

4

.15%

and the seismic safety coefficients were 2.15 and 1.86

respectively

in the horizontal seismic acceleration 0.4 g and 0.5 g tests. The test results show that the method of structural optimization and shock absorption design can be used to improve the seismic performance of UHV lightning arrester

and installation of the shear-type lead dampers has hardly influences on the overall stiffness of the electrical equipment. The research results can provide references for seismic design and test of substation electrical equipment.