The application of power electronic transformer in distribution power system

Abstract

Transformer for electric energy conversion of the most basic components in power system, is also one of the most widely used electrical equipment, its operation stability, the quality of power supply and technical and economic indicators will be directly related to the working condition of electrical equipment. Conventional power transformer, although after the development of more than a century, the performance and process have been very mature, as for electric power system, its increase of the power supply reliability and power quality do not have much effect on the improvement. In this paper, a new intelligent multi-functional transformer-power electronic transformer, it not only has the function of traditional power transformer voltage level of power transmission and transformation, electrical isolation and power delivery, but also can improve power supply reliability, improve power quality, the advantages of small size are friendly to environment. First, this paper introduces the working principle of the power electronic transformer, the main topology structure; Then, through the simulation analysis of the advantages compared with traditional transformer power electronic transformer; Finally, the developing trend of power electronic transformer is analyzed and summarized in this paper.