Open AccessDynamic stability of weak grid connection of large‐scale DFIG based on wind turbines
Author(s) -
Tian Xinshou,
Tang Haiyan,
Li Yan,
Chi Yongning,
Su Yuanyuan
Publication year - 2017
Publication title -
the journal of engineering
Language(s) - English
Resource type - Journals
ISSN - 2051-3305
DOI - 10.1049/joe.2017.0498
Subject(s) - wind power , induction generator , turbine , grid , grid connection , control theory (sociology) , electric power system , interconnection , power (physics) , computer science , fault (geology) , engineering , electrical engineering , control (management) , telecommunications , aerospace engineering , physics , mathematics , artificial intelligence , geology , geometry , quantum mechanics , seismology
The proportion of installed wind power capacity in power grid continues to increase, which makes the coupled interaction between wind generators and power grid becomes more severe, then the operation characteristics of power grid during grid disturbance may change, especially in the weak grid. There may be dynamic stability issues in a weak grid connection of large‐scale doubly fed induction generator (DFIG)‐based wind turbines. To study the operation characteristics and control problem of the power grid formed by the interconnection of the asynchronous power source based on power electronics equipment, a sensitivity analysis method based on interaction is adopted considering the conventional method cannot consider correctly the physical response of electrical components under a quasi‐steady‐state time‐scale. Then the interaction stability mechanism between the DFIG‐based wind turbine and wind power integration system and its influence factors are deduced. Finally, the influence of power disturbance and short circuit fault on the stability of the large‐scale DFIG‐based wind turbine integration system is analysed with the simulation results.