Abstract This paper discusses how the fault locations, action of crowbar protection and the proportional and integral coefficient of rotor side inverter affect the magnitude and decay time of doubly-fed induction generator(DFIG)’s short-circuit current. The simulation indicates the “multi-waveform” fault characteristics of DFIG current fed into the grid, which is due to the multi rotor exciting models. Based on this, a grid connecting-point protection scheme for wind farm is proposed. The scheme is composed of advanced current protection and low voltage protections, which can not only reliably remove the fault happened on the tie line, but also ensure the wind farm to operate under fault condition. The proposed protection scheme is of great significance to realizing the reliable operation and fast fault restoration of the grid with high penetration wind generators.
Han Aoyang,Zhang Zhe,Yin Xianggen等. Research on Fault Characteristic and Grid Connecting-Point Protection Scheme for Wind Power Generation With Doubly-Fed Induction Generator[J]. Transactions of China Electrotechnical Society, 2012, 27(4): 233-239.
2012, Vol. 27 
