Electromagnetic Transient Modeling of HVDC System

As the development of EHVDC and UHVDC in China,AC/DC interaction becomes more and more prominent.Setting up adaptive and valid AC/DC system models including the AC/DC primary system,the DC control and protection system is of vital importance.This paper proposes the methods of the primary system modeling,the control system parameters selection and optimization,the HVDC steady UI characteristic verification and HVDC system dynamic performance analysis based on the electromagnetic transient software PSCAD/EMTDC.These methods can make the trusted analysis for point to point AC/DC interaction as well as the multi-infeed AC/DC interaction.