Implementation aspects of a sequential AC/DC power flow computation algorithm for Multi-terminal VSC HVDC systems

In this paper, the implementation of a sequential AC/DC power flow computation algorithm for Multi-terminal Voltage Source Converter High Voltage Direct Current (VSC MTDC) systems is discussed. The already available models for two-terminal Voltage Source Converter High Voltage Direct Current (VSC HVDC) presented in literature have certain shortcomings and are often not general enough, which can impede their extension to MTDC models. Due to a general formulation of the problem, the proposed algorithm allows to incorporate multiple DC grids with arbitrary topologies. The algorithm includes converter station losses and allows to access the DC grid variables in a way similar to AC power flow programs.