Title :
Analysis of Low Voltage Ride through Capability in Wind Turbine Based on DFIG
Author :
Li, Shan-Ying ; Sun, Yu ; Wu, Tao ; Liang, Yu-Zhi ; Yu, Xiao ; Zhang, Jian-Ming
Author_Institution :
Electr. Power Syst. Res. Div., North China Grid Co. Ltd., Beijing, China
Abstract :
In this paper the coordination of the low voltage ride through capability and the crowbar protection of DFIG are discussed. Different protection strategies for over-current and low voltage protection are presented. Effect of different short-circuit impedance, different wind generator pre-fault output power and different fault types on transient stability of connected grid are studied. Simulation in a simple power system with DFIG is carried out based on the DIgSILENT/PowerFactory environment, and some conclusions for the transient stability of DFIG wind turbine under LVRT characteristic are obtained by comparing simulation results of DFIG with different control strategies, which will be advisable to design DFIG control and protection schemes.
Keywords :
asynchronous generators; machine protection; overcurrent protection; power generation faults; power grids; power system transient stability; wind turbines; DFIG control design; DIgSILENT-powerfactory environment; LVRT characteristic; connected grid transient stability; crowbar protection; low voltage protection; low voltage ride through capability analysis; overcurrent protection strategy; power system; short-circuit impedance; wind generator prefault output power; wind turbine; Circuit faults; Integrated circuit modeling; Low voltage; Power systems; Rotors; Voltage fluctuations; Wind turbines; crowbar protection; doubly fed induction generator (DFIG); low voltges ride through (LVRT);
Conference_Titel :
Electrical and Control Engineering (ICECE), 2010 International Conference on
Conference_Location :
Wuhan
Print_ISBN :
978-1-4244-6880-5
DOI :
10.1109/iCECE.2010.812
