%0 Journal Article %T Analysis of Short-circuit Characteristics and Calculation ofSteady-state Short-circuit Current for DFIG Wind Turbine %J 电力系统自动化 %D 2012 %X Large-scale doubly-fed induction generator(DFIG)wind turbines are connected to the grid and required toremain grid-connection during faults,the short-circuit current contributed by the generation has become a significantissue.However,the traditional calculation methods aiming at synchronous generators cannot be directly applied tothe DFIG wind turbines.A new method is needed to calculate the short-circuit current required by the planning, protection and control of the power grid.The short-circuit transition of DFIG under symmetrical and asymmetricshort-circuit conditions are mathematically deduced,and the short-circuit characteristics of DFIG are analyzed.Anew method is proposed to calculate the steady-state short-circuit current of DFIG based on the derived expressions. The time-domain simulations are conducted to verify the accuracy of the proposed method %K wind power generation %K doubly-fed induction generator(DFIG) %K short-circuit current %K transientcharacteristics %K wind power generation %K doubly-fed induction generator(DFIG) %K short-circuit current %K transientcharacteristics %U http://www.aeps-info.com/aeps/article/abstract/201112160?st=article_issue