The incorporation of generalized VSC MTDC model in AC/DC power system state estimation

In this paper, a generalized steady state multi-terminal voltage source converter based high voltage direct current (VSC MTDC) model suitable for power system state estimation is introduced. The process of incorporation of VSC MTDC model in AC/DC state estimation is described in detail. The proposed approach simultaneously upgrades the estimated values of the state variables of MTDC system and the state variables of the reminder AC networks, for a unified solution in a single reference frame. The effectiveness of the proposed AC/MTDC state estimation algorithm and the bad data identification process is demonstrated and validated in modified IEEE 14 bus system.