REN Chong, REN Jing, CHENG Lin, et al. Transient Overvoltage Suppression Method for Renewable Energy Sources Near DC Transmission Systems Based on Grid-forming Energy Storage[J]. 2025, 53(9): 1-9.
REN Chong, REN Jing, CHENG Lin, et al. Transient Overvoltage Suppression Method for Renewable Energy Sources Near DC Transmission Systems Based on Grid-forming Energy Storage[J]. 2025, 53(9): 1-9. DOI: 10.20204/j.sp.2025.09001.
Transient Overvoltage Suppression Method for Renewable Energy Sources Near DC Transmission Systems Based on Grid-forming Energy Storage
To address voltage stability issues caused by the concentrated integration of renewable energy sources,this paper proposes a method for the site selection and parameter optimization of grid-forming energy storage systems (GFMESS) based on voltage vulnerability indices and trajectory sensitivity.First,a detailed analysis is conducted on the mechanism of transient overvoltage in renewable energy sources near DC transmission systems.Next,an initial screening method for GFMESS siting is formed by integrating two evaluation indices:the transient overvoltage vulnerability index and the GFMESS support effectiveness index.A trajectory sensitivity-based method for GFMESS siting selection is then proposed.On this basis,to more effectively suppress transient overvoltage in renewable energy sources,a GFMESS control parameter optimization method is developed.Finally,using actual operation data from the Northwest China Grid,the power system simulation software PSASP is employed to validate the transient overvoltage suppression effectiveness of the proposed method.Simulation results demonstrate that the rational site selection and parameter optimization of grid-forming energy storage can significantly reduce power system operational risks triggered by disturbances such as DC commutation failures.
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