Open AccessResearch on frequency modulation of DFIG wind turbines auxiliary power grid based on improved frequency control
Author(s) -
Hongpeng Zhang,
Zengyao Tian,
Dan Li,
Jingxiao Wei,
Siqi Liu,
Peng Ye
Publication year - 2021
Publication title -
iop conference series. earth and environmental science
Language(s) - English
Resource type - Journals
eISSN - 1755-1307
pISSN - 1755-1315
DOI - 10.1088/1755-1315/645/1/012024
Subject(s) - wind power , decoupling (probability) , frequency grid , control theory (sociology) , automatic frequency control , grid , frequency modulation , power control , power (physics) , doubly fed electric machine , computer science , ac power , engineering , control (management) , electrical engineering , voltage , telecommunications , control engineering , physics , radio frequency , mathematics , geometry , quantum mechanics , artificial intelligence
With a large number of DFIG wind turbines connected to the power grid, in order to improve the frequency fluctuation caused by its decoupling, this paper first analyses the current situation of DFIG wind turbines participating in the primary frequency modulation of power grid, and establishes the corresponding model based on the above analysis. According to the commonly used inertial control methods, a frequency modulation method for auxiliary power grid of DFIG wind turbines based on improved frequency control strategy is proposed. Through the simulation of actual power grid model, the grid frequency fluctuation has been effectively alleviated after adding frequency control link to DFIG wind turbines, and it is concluded that the higher the wind power penetration, the more significant the frequency improvement effect.