Optimum Design of Middle Passage Back-to-Back Flexible HVDC Converter Station

  Introduction  Middle passage back-to-back flexible HVDC Converter Station is located in Zengcheng Economic Development Zone in Guangzhou， the northeast of the site is the existing residential district， the east is an planned industrial district， and the southwest is a natural village. The project construction shall consider the coordination and consistency with the surrounding environment.

  Method  A comparative study and optimal design of transformer arrangement scheme， starting circuit arrangement scheme， and 500 kV AC distribution device arrangement scheme were carried out by zone.

  Result  The equipment selection and layout of the station are optimized， indoor transformer， indoor disposition of start-up circuit， GIS branch bus for the connection of 500 kV distribution equipment in the northwest side are recommended.

  Conclusion  This study provides ideas and methods for improving the coordination of construction of flexible HVDC Converter Station with the surrounding environment.