Title :
Layered VAR control strategy of DFIG-based wind farm
Author :
Xia, Zhou ; Weidong, Yang ; Songyan, Wang ; Ning, Chen
Author_Institution :
State Grid Electr. Power Res. Inst., Stability Technol. Co., Nanjing, China
Abstract :
This paper proposed a novel layered VAR control strategy to solve VAR and voltage stability caused by wind farm integration. The strategy first calculated reactive power demand of the wind farm by deviation of reference voltage and measured voltage of control point. Then the calculated reactive power demand was distributed by equal power factor algorithm to single wind generator in the wind farm. In this way voltage stability of grid integrated with wind farm can be solved. Wind farm reactive power limit and power factor limit were considered real-time in wind farm reactive power demand calculation. Simulation shows the strategy can support voltage of control point and restrain voltage fluctuation caused by load change.
Keywords :
asynchronous generators; power factor; reactive power; voltage control; wind power plants; DFIG-based wind farm; doubly fed induction generator; equal power factor algorithm; grid integration; layered VAR control strategy; measured voltage; power factor limit; reactive power demand; reactive power limit; reference voltage; voltage fluctuation; voltage stability; wind farm integration; wind generator; Distributed power generation; Power generation; Power measurement; Reactive power; Reactive power control; Stability; Voltage control; Voltage measurement; Wind farms; Wind power generation; DFIG; VAR control; voltage stability; wind power;
Conference_Titel :
Power Electronics and Machines in Wind Applications, 2009. PEMWA 2009. IEEE
Conference_Location :
Lincoln, NE
Print_ISBN :
978-1-4244-4935-4
Electronic_ISBN :
978-1-4244-4936-1
DOI :
10.1109/PEMWA.2009.5208397
