Open AccessSSO Suppression Strategy of DFIG-Based Wind Turbine Based on Impedance Reshaping
Author(s) -
Qihui Liu,
Chun Shi,
Simin Pang
Publication year - 2020
Publication title -
iop conference series. earth and environmental science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.179
H-Index - 26
eISSN - 1755-1307
pISSN - 1755-1315
DOI - 10.1088/1755-1315/555/1/012033
Subject(s) - electrical impedance , turbine , control theory (sociology) , doubly fed electric machine , wind power , oscillation (cell signaling) , output impedance , power (physics) , rlc circuit , electric power system , computer science , voltage , engineering , ac power , electrical engineering , physics , control (management) , mechanical engineering , capacitor , quantum mechanics , artificial intelligence , biology , genetics
In order to suppress the sub-synchronous oscillation (SSO) of DFIG-based wind power generation system, a new suppression strategy based on impedance reshaping is proposed in this paper. Firstly, the impedance model of DFIG-based wind power generation system set in static coordinate system is established, and the mechanism of SSO is analyzed through aggregated RLC equivalent circuit. Then, an impedance reshaping suppression strategy is proposed, the impedance model with additional suppression strategy is established, and its suppression mechanism is explained. Finally, the effectiveness of the impedance reshaping suppression strategy is verified by semi-physical experimental.