Title :
Optimization of FRT active power performance of a DFIG during transient grid faults
Author :
Meegahapola, L.G. ; Flynn, Damian ; Littler, Tim
Author_Institution :
Queen´´s Univ. of Belfast, Belfast, UK
Abstract :
Optimal fault ride-through (FRT) conditions for a doubly-fed induction generator (DFIG) during a transient grid fault are analyzed with special emphasis on improving the active power generation profile. The transition states due to crowbar activation during transient faults are investigated to exploit the maximum power during the fault and post-fault period. It has been identified that operating slip, severity of fault and crowbar resistance have a direct impact on the power capability of a DFIG, and crowbar resistance can be chosen to optimize the power capability. It has been further shown that an extended crowbar period can deliver enhanced inertial response following the transient fault. The converter protection and drive train dynamics have also been analyzed while choosing the optimum crowbar resistance and delivering enhanced inertial support for an extended crowbar period.
Keywords :
asynchronous generators; fault diagnosis; power grids; transient analysis; DFIG; FRT active power performance; active power generation profile; crowbar activation; doubly-fed induction generator; inertial response; optimal fault ride-through conditions; transient fault; transient grid faults; Automatic voltage control; Circuit faults; Induction generators; Power generation; Power system stability; Protection; Reactive power; Rotors; Wind energy generation; Wind power generation; Active power; DFIG; crowbar; drive train dynamics; inertial response; reactive power; transition states;
Conference_Titel :
Industrial and Information Systems (ICIIS), 2009 International Conference on
Conference_Location :
Sri Lanka
Print_ISBN :
978-1-4244-4836-4
Electronic_ISBN :
978-1-4244-4837-1
DOI :
10.1109/ICIINFS.2009.5429813
