Short circuit current analysis of DFIG wind turbines with crowbar protection

2009 ◽  
Author(s):  
H.L. Zhou ◽  
G. Yang ◽  
D.Y. Li
Keyword(s):  
Wind Turbines ◽  
Short Circuit ◽  
Short Circuit Current ◽  
Current Analysis ◽  
Crowbar Protection

Symmetrical Short Circuit Current Characteristics of Doubly Fed Induction Generator Wind Turbine with Crowbar Protection

2012 ◽  
Vol 512-515 ◽  
pp. 782-787
Author(s):  
Jia Jun Zhai ◽  
Bu Han Zhang ◽  
Kui Wang ◽  
Wen Shao ◽  
Cheng Xiong Mao
Keyword(s):  
Wind Turbine ◽  
Wind Turbines ◽  
Short Circuit ◽  
Short Circuit Current ◽  
Induction Generator ◽  
Doubly Fed Induction Generator ◽  
Operating Characteristics ◽  
Doubly Fed ◽  
Crowbar Protection ◽  
Short Circuit Fault

Doubly fed induction generator (DFIG) is now becoming one of most widely used wind turbines in global market for wind power generation, due to its outstanding advantages. However, the DFIG is sensitive to grid faults. The DFIG will have to be removed from the grid if there’s no protection appliance in it. Therefore, the crowbar protection is widely used in the world for improving the low voltage ride-through ability of wind turbines. This paper analysed the operating characteristics and short-circuit current of DFIG under symmetrical short-circuit fault with respect to different sags to grid voltage, which on the basis of DFIG wind turbine with crowbar protection. And the expressions of short-circuit current under symmetrical short-circuit fault for DFIG were derived. The effectiveness of the expression was simulated in PSCAD/EMTDC.

Short-Circuit Current Contribution of Doubly-Fed Wind Turbines according to IEC and IEEE Standards

2020 ◽  
pp. 1-1
Author(s):  
F. Jimenez-Buendia ◽  
A. Honrubia-Escribano ◽  
A. Lorenzo-Bonache ◽  
E. Artigao-Andicoberry ◽  
E. Gomez-Lazaro
Keyword(s):  
Wind Turbines ◽  
Short Circuit ◽  
Short Circuit Current ◽  
Current Contribution ◽  
Ieee Standards ◽  
Doubly Fed

scholarly journals Review on Short-circuit Current Analysis and Suppression Techniques for MMC-HVDC Transmission Systems

2020 ◽  
Vol 10 (19) ◽  
pp. 6769
Author(s):  
Boyu Qin ◽  
Wansong Liu ◽  
Ruowei Zhang ◽  
Jialing Liu ◽  
Hengyi Li
Keyword(s):  
Direct Current ◽  
Short Circuit ◽  
Short Circuit Current ◽  
Power Grids ◽  
Stable Operation ◽  
Current Analysis ◽  
Transmission Systems ◽  
Hvdc Transmission ◽  
Dc Power ◽  
Short Circuit Calculation

The modular multilevel converter (MMC) has been widely adopted in high voltage direct current (HVDC) transmission systems due to its significant advantages. MMC-HVDC is developing towards multi-terminal direct current (MTDC) power grid for reliability enhancement. However, there exist a huge amplitude and a steep rise in fault current due to the low impedances of DC lines and MMCs, which threaten the security and reliability of the DC power grids. It is necessary to restrain the DC short circuit current in order to ensure the safe and stable operation of DC power grids. This paper gives a comprehensive review and evaluation of the proposed DC short-circuit current analysis and suppression techniques used in MMC-based MTDC power girds, in terms of MMC modeling, short circuit calculation, and suppression method. In addition, future trends of countermeasures to short circuit current in MMC-based MTDC power grids are also discussed.

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