Simulation on Electromagnetic Radiation of High Voltage Converter Station Valves

Electromagnetic interference (EMI) is generated generally by the periodic switching of the valves in HVDC converter station. Each converter body will have a rapid on-off transient electromagnetic process. The steady-state electromagnetic environment of converter station is complex with a cyclical transient electromagnetic process. This work focuses on the electromagnetic radiation of the converter valve, due to the rapid on-off. The paper mainly studies the simulation on electromagnetic radiation of high voltage converter station valves on two methods, namely, direct frequency domain method and impedance transformation method, building the time-varied radiation model, then analyzing the results between the two methods.