Title: Simulation and Analysis on the Effect of Static Synchronous Compensation Device on HVDC Commutation Failure
Abstract: As the second generation of FACTS products, static synchronous compensator (STATCOM) can dynamically compensate for the reactive power of the system, thereby improving the operating characteristics of the system.The STATCOM is connected to the HVDC inverter AC bus, and the HVDC transmission system model with STATCOM is established.The effect of STATCOM on the commutation failure and DC power recovery time is studied by PSCAD / EMTDC simulation in different types and levels of fault.The simulation results show that the access of STATCOM can improve the immunity of HVDC system to commutation failure, accelerate the recovery of DC transmission power and improve the running characteristics of the system.