@article{Guo2025, 
author = {Chunyi Guo and Jiaqing Zhang and Shuo Yang and Huan Li and Chuang Fu},
title = {Modified Dynamic Model and Small-signal Stability Analysis for LCC-HVDC Systems},
year = {2025},
journal = {CSEE Journal of Power and Energy Systems},
volume = {11},
number = {2},
pages = {750-759},
keywords = {LCC-HVDC, modified dynamic model, practical project, small-signal analysis},
url = {https://www.sciopen.com/article/10.17775/CSEEJPES.2021.05820},
doi = {10.17775/CSEEJPES.2021.05820},
abstract = {Inaccuracy of modeling for line commutated converter based high voltage direct current (LCC-HVDC) systems will degrade the reliability of small-signal stability analysis results. Taking a practical project as the study system, this paper establishes a modified dynamic model by modifying the current switching function, firing angle calculation and DC voltage calculation. Then, the accuracy of the modified model is verified by a detailed electromagnetic transient (EMT) simulation. Finally, with the modified dynamic model, the impact of the control parameters and AC system strength on the small-signal stability of the overall system is investigated by adopting the eigen-analysis. The results clearly demonstrate that the modified model shows higher accuracy than the original model.}
}