Working Principle and Application of Converter Valve Control System in ±660 kV HVDC Transmission Project

As the core equipment for HVDC transmission system,valve control system is mainly responsible for triggering,monitoring and protecting the converter valve.In Ningdong-Shandong ± 660 kV DC transmission project,the working principle and design features of the valve control system are presented.In addition,the on-site operation is introduced,with focus on the problems of valve base electronics(VBE) occurring in the commmissioning and trial operation.Finally,effective measures and improvement suggestions are proposed.