Abstract:
According to the weak character of seismic capacity of high voltage current transformer and en-suring no damage at the time of the earthquake, the current transformer is used as research object to carry out the aseismic capacity and seismic isolation analysis. Firstly, the modal analysis of high voltage current transformer is carried out, and the natural frequency and mode shape of the breaker are calculated, and the easily damaged parts of high voltage current transformer are determined. Secondly, according to the standards of the IEEE Std-693-2005 and GB/T13540-92, natural El-centro wave and Taft wave are used to carry out the level excitation of the high voltage current transformer, and the time history analysis of the displacement and stress of the vulnerable parts of current transformer is carried out, and the maximum displacement and maximum stress of vulnerable parts are determined. The above research can provide technical support for the seismic design optimization of the current transformer.