Comparison of power converter circuits for HVDC with SMES

This paper describes the comparison of circuit configuration of CSC (Current Source Converter) and VSC (Voltage Source Converter) in HVDC (High Voltage DC Transmission) with SMES (Superconducting Magnetic Energy Storage) connection. The purpose of using SMES is to smooth out power fluctuation in one terminal side in order to avoid causing power system instability and frequency deviation by absorbing or providing power according to the system requirement. Configurations of these two proposed system have ability for power system stabilization in the case of power fluctuation from natural energy source. To evaluate the performance of the applied circuit configurations and control methods, PSCAD/EMTDC simulation is used.