Fast response DVR control strategy design to compensate unbalanced voltage sags and swells in distribution systems

2013 ◽  
Author(s):  
Arash Tavighi ◽  
Hamed Abdollahzadeh ◽  
Jose Marti
Keyword(s):  
Control Strategy ◽  
Distribution Systems ◽  
Fast Response ◽  
Voltage Sags ◽  
Unbalanced Voltage ◽  
Strategy Design

Analysis on Power Output Capability and its Power Control Strategy of DFIG Wind Turbine under Unbalanced Grid Voltage

2013 ◽  
Vol 448-453 ◽  
pp. 1819-1824
Author(s):  
Shu Ju Hu ◽  
Ling Ling Wang ◽  
Ya Deng
Keyword(s):  
Power Control ◽  
Wind Turbine ◽  
Control Strategy ◽  
Power Output ◽  
Reactive Power ◽  
Maximum Output ◽  
Voltage Sags ◽  
Active And Reactive Power ◽  
Unbalanced Voltage ◽  
Power Limit

Wind turbines are required by gird codes that active and reactive power should be fed into power grid during gird faults such as voltage sags. Power output capability is important for DFIG wind turbine to provide active and reactive power support. Constraints of stator, rotor maximum current and maximum output voltage of rotor-side converter (RSC) of DFIG are considered to analyze stator power output limit of the DFIG under unbalanced voltage sags, and newton-raphson method is used to solve the power limits, then the power control strategy based on power limit analysis is proposed. Simulation, calculation and comparison are carried out by a 1.5MW DFIG wind turbine model, and the effectiveness of the analysis and the proposed control strategy is verified.

Impacts of Voltage Sags and Protection Coordination on Sensitive Equipment in Distribution Systems

2010 ◽  
Vol 130 (6) ◽  
pp. 551-558 ◽  
Author(s):  
Le Viet Tien ◽  
Thavatchai Tayjasanant ◽  
Akihiko Yokoyama ◽  
Bundhit Eua-Arporn
Keyword(s):  
Distribution Systems ◽  
Voltage Sags
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