System frequency support using wind turbine kinetic energy and energy storage system

2013 ◽  
Author(s):  
G. Xu ◽  
Lie Xu ◽  
J. Morrow
Keyword(s):  
Energy Storage ◽  
Kinetic Energy ◽  
Wind Turbine ◽  
Storage System ◽  
Energy Storage System ◽  
System Frequency

scholarly journals Modelling and region stability analysis of wind turbines with battery energy storage system based on switched system with multi-equilibriums

2019 ◽  
Vol 41 (6) ◽  
pp. 1519-1527 ◽  
Author(s):  
Xiaokun Dai ◽  
Yang Song ◽  
Taicheng Yang
Keyword(s):  
Energy Storage ◽  
Wind Turbine ◽  
Output Power ◽  
Storage System ◽  
Energy Storage System ◽  
Stable Region ◽  
Switched Linear System ◽  
Battery Energy Storage System ◽  
Battery Energy Storage ◽  
Battery Energy

This paper deals with the modelling and control for wind turbine combined with a battery energy storage system (WT/BESS). A proportional-integral (PI) controller of pitch angle is applied to adjust the output power of WT, and a method for battery scheduling is presented for maintaining the state of charging (SOC) of BESS. When the battery level is below the lower limit, we increase the expected output power of wind turbine through raising the operation point to charge the battery. Considering the effect of charging/discharging, a switched linear system model with two equilibriums is presented firstly for such WT/BESS system. The region stability is analyzed and an approach for estimating the corresponding stable region is also given. The effectiveness of the proposed results is demonstrated by a numerical example.

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