UHV（ultra-high voltage） DC（direct current） wall bushings are the important equipment of convertersubstation and are vulnerable in the earthquake. In order to evaluate wall bushing’s seismic performance

an ±800kVwall bushing finite element model is established and its seismic responses is obtained. And to solve the problem thatthe seismic responses are too large to meet the engineering requirements

metal friction type dampers are proposed tobe installed at the bottom of the wall bushing and the seismic responses of the wall bushing with and without dampersare compared. The result shows that the existence of metal friction dampers could reduce the acceleration and stressof the wall bushing

among which the acceleration at the top of the bushing reduced 34% and the stress at the root ofthe bushing reduced 54%

so the vibration control effect is significant. Wall bushing with metal friction damperscould meet the seismic requirements

so the existence of dampers could greatly improve the seismic performance ofthe wall bushing.