Study on the Low Voltage Ride-Through Capability Improvement for Doubly Fed Wind Generation System

• Main Authors: Yong-Han Lai, 賴勇翰
• Other Authors: Tien-Ting chang
• Format: Others
• Language: zh-TW
• Published: 2012
• Online Access: http://ndltd.ncl.edu.tw/handle/28339454249511874885

碩士 === 國立勤益科技大學 === 電機工程系 === 100 === This thesis presents a comparison of three different Low Voltage Ride-Through (LVRT) technology for wind turbines with doubly-fed induction generator, i.e., a hybrid improved control scheme (HICS) based on the improved Stator-Flux Orientation control for rotor side converter combine the improved Stator-Voltage Orientation control for grid-side converter, static synchronous compensator combine the HICS, and stator series resistor combine the HICS to suppress the electromagnetic transient response of wind turbine generator with rotor inrush current, dc-link voltage fluctuation, power transient oscillation peak of wind turbine generator, and rotor inrush speed in two grid voltage sag case because of the three-phase ground fault. The MATLAB/Simulink of Simpower System software is used to simulation the test system with phasor method to compare the effect of these three LVRT technology to respect the Taiwan Power Company LVRT requirements and protective relays restrictions.