Mitigation of voltage dips and voltage swells by STATCOM/BESS

2006 ◽  
Author(s):  
Jie Zeng ◽  
Buhan Zhang ◽  
Chengxiong Mao ◽  
Yunling Wang
Keyword(s):  
Voltage Dips ◽  
Voltage Swells

scholarly journals Monitoring Power Quality in Microgrids Based on Disturbances Propagation Algorithms

2013 ◽  
Vol 8-9 ◽  
pp. 127-138 ◽  
Author(s):  
Anca Miron ◽  
Mircea D. Chindris ◽  
Andreas Sumper
Keyword(s):  
Power Quality ◽  
Virtual Instrument ◽  
Quality Indices ◽  
Component Theory ◽  
Voltage Dips ◽  
Voltage Swells

The paper shows how the surveying of power quality in microgrids working under unbalanced harmonic distorted operating states with possible voltage dips and voltage swells existence can be accomplished implying a small amount of time and measurement activities. The surveying methodology uses the disturbances propagation phenomenon to determine the power quality indices in all of interest nodes of the microgrid utilizing the voltages and currents characteristics in one or several strategic nodes. The disturbances propagation is based on the sequence component theory applied for all detected harmonics and for the microgrids components. The proposed surveying methodology was implemented in a virtual instrument capable to acquire the voltages and currents waveforms, to analyze them in order to identify the disturbances characteristics, to calculate the disturbances propagation and display the power quality indices in all of interest nodes of the microgrid. The virtual instrument was tested using several microgrid topologies and scenarios.

Research on Flux Damping Control Strategy of DFIG during Grid Voltage Dips

2015 ◽  
Vol 713-715 ◽  
pp. 756-759
Author(s):  
Xu Guang Zhang ◽  
Zhen Xie
Keyword(s):  
Mathematical Model ◽  
Control Strategy ◽  
Grid Voltage ◽  
Damping Control ◽  
Simulink Simulation ◽  
Voltage Dips ◽  
Simulation Results ◽  
Stator Flux ◽  
Natural Component ◽  
Simplified Mathematical Model

A flux damping control strategy was proposed to accelerate the decay of stator flux and restrain stator, rotor current and torque oscillation caused by grid voltage dips. Firstly, this paper analyzes the simplified mathematical model of DFIG during symmetrical voltage dips. Then, the mechanism of flux damping control strategy to restrain stator, rotor current oscillation and increase flux damping was analyzed. The flux damping control strategy can increase the damping of stator side, which accelerates the decay of the stator flux natural component and improve the dynamic LVRT performance of DFIG. The correctness and effectiveness of this method is verified by MATLAB/Simulink simulation results.

Induction motor response to voltage dips

2006 ◽  
Vol 76 (8) ◽  
pp. 676-680 ◽  
Author(s):  
Andreia Leiria ◽  
Pedro Nunes ◽  
Atef Morched ◽  
M. Teresa Correia de Barros
Keyword(s):  
Induction Motor ◽  
Motor Response ◽  
Voltage Dips
Sign in / Sign up

Export Citation Format

Share Document