Analysis of Transient Characteristics of TPY Core in Current Transformer

This paper introduces the influence of transient process of fault occurred in the electric power system on current transformer and,based on the mathematical analysis of transient performance of current transformer's TPY core and with the help of computer software,the influence of each design parameter on the transient characteristics of TPY core is analyzed through actual example.Finally the transient performance of current transformer's TPY core is summarized.