@Article{ee.2025.073028,
AUTHOR = {Qiang Liu, Yongqiang Zhou, Chaoyang Lu, Zhen Yan, Gangui Yan, Cheng Yang, Yupeng Wang},
TITLE = {Low-Frequency Oscillation Analysis of Grid-Forming Energy Storage Converters Based on a Multi-Damping Path Model},
JOURNAL = {Energy Engineering},
VOLUME = {},
YEAR = {},
NUMBER = {},
PAGES = {{pages}},
URL = {http://www.techscience.com/energy/online/detail/25041},
ISSN = {1546-0118},
ABSTRACT = {The increasing proportion of power generated by new energy has meant that grid-forming energy storage has become a key method for improving power grid flexibility. However, the small disturbance stability problem has become an important challenge. The issue is that grid-forming energy storage is prone to low-frequency oscillation under strong grid conditions. Therefore, this study proposes a multi damping torque model to analyze the small signal stability of grid-forming energy storage converters. The impact of grid strength, operating conditions, and control parameters on the damping characteristics of the low-frequency oscillation by the system was quantitatively evaluated. The results revealed the mechanism underlying the low-frequency oscillation associated with grid-forming energy storage under strong grid conditions and key factors controlling the low-frequency oscillation. The results also provide theoretical guidance for the tuning of grid-forming energy storage control parameters. The accuracy of the multi damping torque model and theoretical analysis were verified using the electromagnetic simulation results.},
DOI = {10.32604/ee.2025.073028}
}