Open AccessEffect of PLL on transient performance of wind turbines generator under voltage phase jump
Author(s) -
Liu Chao,
Tian Xinshou,
Chen Kai,
Su Yuanyuan,
Li Yan
Publication year - 2019
Publication title -
the journal of engineering
Language(s) - English
Resource type - Journals
ISSN - 2051-3305
DOI - 10.1049/joe.2018.8783
Subject(s) - phase locked loop , transient (computer programming) , control theory (sociology) , rotor (electric) , voltage , wind power , jump , induction generator , transient voltage suppressor , turbine , power (physics) , low voltage ride through , ac power , phase (matter) , engineering , computer science , physics , electrical engineering , aerospace engineering , control (management) , quantum mechanics , artificial intelligence , operating system
With the increasing proportion of wind power installed capacity, the influences of transient characteristics of wind turbines generator on safety and stability of power grid is becoming more and more important. The rotor side of doubly fed induction generator (DFIG) is connected to the grid through a back‐to‐back inverter, and vector control based on phase‐locking synchronisation is used generally. Phase‐locked loop (PLL) drive internal potential phase changes to achieve synchronous operation with the grid. Therefore, PLL has great influence on transient characteristics of DFIG. A dynamic model of PLL is built in this study. Phase‐locking performance of PLL under voltage phase jump is studied by changing its parameters, and its impact mechanism on transient characteristics of DFIG is proposed. Simulation models are built with DIgSILENT/PowerFactory. The influence of parameters of PLL on phase‐locking performance of DFIG under voltage phase jump is simulated.