The noise of the power capacitor loaded with fundamental and harmonic current is one of the main sources of noise pollution in convertor station. However

it is difficult to build the simulation model because of the particularity of the material and structure of the capacitor core. And there is no mature method for modeling vibration of power capacitor core at present. In this paper

the vibration mechanism of capacitor core is analyzed. The equivalent method of core structure

the physical and mechanical characteristic of core package and the contact characteristic of core package are studied. The method of a numerical solution for material properties of core package and an analytical solution for equivalent material properties of virtual contact media are proposed. On this basis

the vibration simulation model of core is established. Finally

taking a certain type of capacitor core as an example

the proposed method and the model are verified.