Protection Technologies of Ultra-High-Voltage AC Transmission Systems

Today, Dr. Li’s research is focused on statistics and machine learning. He has published >75 peer reviewed research papers with >1,300 citations of his work. Yongli Li is a pofessor at the School of Electrical and Information Engineering, Tianjin University, Tianjin, China Jiali He is a professor at the School of Electrical and Information Engineering, Tianjin University, Tianjin, China Yuping Zheng is the director of the State Key Laboratory of Smart Grid Protection and Operation Control, China

• 1. Introduction to UHV AC transmission system2. Electromagnetic fields of UHV AC transmission line3. Parameters of UHV AC Transmission Line4. UHV transmission line protection configuration scheme5. Traditional protection principles and programs of UHV AC transmission lines6. Distributed parameter characteristics of UHV transmission line7. Bergeron model based segregated current differential protection and its application8. Distance protection of UHV long transmission line9. Overvoltage and automatic reclosing of UHV AC transmission line10. Special problems of protections of UHV AC double-circuit lines on same tower11. Protections of UHV transformer and shunt reactors12. Preliminary Study on protection of UHV half-wavelength transmission line