@ARTICLE{Khoa_Ngo_Minh_Experimental_2021, author={Khoa, Ngo Minh and Toan, Nguyen An and Tung, Doan Duc}, volume={vol. 70}, number={No 1}, journal={Archives of Electrical Engineering}, pages={37-51}, howpublished={online}, year={2021}, publisher={Polish Academy of Sciences}, abstract={For voltage-source-converter based high-voltage-direct-current (VSC-HVDC) transmission systems, fault ride-through (FRT) capability is a very important grid requirement in order to enhance its operational availability under an alternating current (AC) grid fault condition. Voltage sags during a short-circuit fault in power transmission lines can lead to fluctuations in the direct current (DC) link voltage of converter systems, and may induce reversed power flow and even trip a VSC-HVDC transmission system. A practical method is developed in this paper for investigating FRT capability of VSC-HVDC transmission system characteristics during a voltage sag event using experimental results from Smart Grid Laboratory. Symmetrical and asymmetrical voltage sag events with different remaining voltages are applied to an AC grid that lasts with a variable duration. The experimental waveforms of the two converter systems are recorded and analyzed in order to evaluate the FRT capability of VSC-HVDC transmission systems.}, type={Article}, title={Experimental study on fault ride-through capability of VSC-based HVDC transmission system}, URL={http://www.czasopisma.pan.pl/Content/118967/PDF/art03.pdf}, doi={10.24425/aee.2021.136051}, keywords={converter system, experimental waveform, fault ride-through, high-voltage direct current, voltage sag}, }