《_800kV_4750A特高压直流输电换流阀研制》.pdf

32 24 Vol.32 No.24 Aug.25, 2012 2012 8 25 Proceedings of the CSEE ©2012 Chin.Soc.for Elec.Eng. 15 0258-8013 (2012) 24-0015-08 TM 85 A 470·40 800 kV/4 750 A    ( 100192) Development of the ±800kV/4750A Ultra High Voltage Direct Current Converter Valve XI Hexun, TANG Guangfu, LIU Jie, WEI Xiaoguang, ZHA Kunpeng (China Electric Power Research Institute, Haidian District, Beijing 100192, China) ABSTRACT: The Chinas first 800 kV/4 750 A HVDC 3    converter valve has been successfully developed by CEPRI with independent intellectual property rights, and it has passed 800 kV/4 750 A type tests. This paper mainly focused on fundamental theories    and key technology analysis. From the distinct angles including the working conditions, the electrical topology and the 0 broadband model, this paper has completed the physical deconstruction of the value. Meanwhile, the paper has studied a series of key technologies, such as the transient electromagnetic characteristic analysis, the nonlinear component coordination technology, the reverse recovery process analytical approximation and the dynamic simulation model of thyristors, the seismic design, the converter valve