Research on Soft Start-Up of VSC-HVDC in Power System Restoration after Blackouts
It is very common to switch on a long no-load line in power systems. If nothing has been done, switching surge will appear instantaneously. In this paper, Voltage Source Converter (VSC) based HVDC (VSC-HVDC) technology is used in power system restoration to solve the problem of switching surge when switching on a long no-load line. Control strategies of VSC-HVDC are developed based on PI controllers. Simulation to start up a long no-load line has been conducted in three conditions respectively on software PSCAD/EMTDC. The simulation includes starting up a long no-load line without VSC-HVDC, starting up a long no-load line with VSC-HVDC when DC voltage reaches the rated value and soft start-up the long no-load line with VSC-HVDC. Simulation results show that ?oft start-up with VSC-HVDC can effectively reduce the switching surge when switching a long no-load line.
VSC-HVDC PWM soft start-up switching surge long no-load line overvoltage
Guangkai LI Chengyong ZHAO Xingran ZHANG Gengyin LI
North China Electric Power University, China North China Baoding Technical College of Electric Power, China
国际会议
2nd IEEE Conference on Industrial Electronics and Applications(ICIEA 2007)(第二届IEEE工业电子与应用国际会议)
哈尔滨
英文
2007-05-23（万方平台首次上网日期，不代表论文的发表时间）