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Study of Multi-factor Coordinated Frequency Control Strategy by DFIG Wind Turbine

[ Vol. 12 , Issue. 1 ]

Author(s):

Wang Yin-Sha, Li Wen-Yi* and Li Zhi-Wen   Pages 86 - 93 ( 8 )

Abstract:


Background: With the large-scale Doubly Fed Induction Generator (DFIG) wind turbine integrated into the power system, the DFIG inertia response of the wind turbine should be provided. Also, the frequency response should be similar to the conventional generation technologies. This paper investigated the influence of frequency response term and wind speed conditions on system frequency control.

Methods: The specific operating conditions of four control strategies, including inertia control, droop control, over speed control and pitch angle control were researched in this paper. Multi-factor coordinated frequency control strategy of DFIG wind turbine was established based on the above researches. The strategy was composed of wind speed ranging from low to high.

Results: According to the simulation results, the DFIG wind turbine, which was based on multifactor coordinated frequency control strategy, could respond to the system’s frequency change of power grid, effectively.

Conclusion: It helps system frequency return to stable states better and faster than DFIG wind turbine and also could reduce the fluctuation of system frequency.

Keywords:

DFIG wind turbine, inertial control, droop control, over speed control, pitch angle control, coordinated frequency control strategy.

Affiliation:

College of Energy and Power Engineering, Inner Mongolia University of Technology, Hohhot 010051, College of Electric Power, Inner Mongolia University of Technology, Hohhot 010051, State Grid East Inner Mongolia Electric Power Supply Co., Ltd, Hohhot 010000

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