On-site data analysis of an electronic current transformer

With the increase of voltage levels and the enlargement of power systems, the electronic transformer instead of the electro-magnetic transformer is the developing trend. However it is still difficult to put into practice because of the instability of long-term operation. In this paper, the on-site data analysis of one electronic current transformer is studied in detail in order to improve its stability. The analysis result will also be helpful for the accumulation of operational experience.