SIMULATION STUDY USING EMTDC ON THREE GORGES HVDC TRANSMISSION SYSTEM

摘要

In this paper, based on a simulation analysis using EMTDC for Three HVDC link from Three Gorges hydro power station multiple terminated at the ac network of East China Power Network (ECPN), the possibility of simultaneous commutation failure of the three DC inverters is investigated and the preliminary conclusions are obtained. It is also investigated that the commutation failure will occur in certain critical condition due to a sudden drop in commutation voltage caused by disturbance, and the critical value of commutation voltage is presented in this paper as well.