标题：Synthetic Inertia Control Strategy for Doubly Fed Induction Generator Wind Turbine Generators Using Lithium-Ion Supercapacitors

作者：Zhu, Jiebei; 胡家兵; Hung, William; Wang, Chengshan; Zhang, Xin; Bu, Siqi; Li, Qi; Urdal, Helge; Booth, Campbell David

摘要：To address the system operability challenges due to the continuous reduction of system inertia by increasing penetration of renewable power generation, this paper proposes a new synthetic inertia control (SIC) strategy for doubly fed induction generator (DFIG)-based wind turbine generators. The proposed SIC scheme enables individual DFIG generators to contribute an effectiveinertialresponsewhichhelpstostabilisetherateofchange of frequency and minimize the maximum frequency deviations in particularunderseveredisturbanceconditions.Toachievetheproposed SIC, lithium-ion supercapacitors are required in the dc link of the DFIG power electronic conversion system to increase extra energy storage capability. The DFIG’s dc voltage operates at variouslevelsfollowingthederivedSICalgorithmsforenergyexchange withtheconnectedacgrid,andtheconventionalcontrolsystemfor DFIG is modified to implement the algorithms. The functions and system benefits of SIC scheme are verified using a DFIG model connected to a power system and compared with the simulations ofconventionalDFIGcontrolscheme.Practicalissuessuchassize, cost, weight, connection configuration, and charging/discharging rate of lithium-ion capacitors for the SIC are discussed and relevant recommendations are presented.

发表于：IEEE TRANSACTIONS ON ENERGY CONVERSION

发表时间：JUN, 2018