In the problem of high voltage ride through (HVRT) of doubly\|fed induction generator (DFIG), the transient overcurrent caused by voltage swell is not enough to trigger crowbar protection action, which makes the short\|circuit current characteristics of stator and rotor under HVRT more complex than those in the case of low voltage ride through (LVRT). Different from the inherent analysis of stator and rotor current, the expressions which take into account the combined influence of electromagnetic transient transition process and rotor side converter (RSC) regulation are derived. On this basis, considering the requirements of grid connection specification for DFIG reactive current support, the outputs of RSC and grid side converter (GSC) related to the swell amplitude are controlled, so as to make DFIG work in the reactive support state. The simulation results show that the expressions of stator and rotor current accurately describe the fault current during HVRT, and the results are more general and are of great significance to the calculation of fault electrical quantity. The improved reactive current configuration realizes the HVRT of DFIG. This research has a certain reference value for mastering the dynamic process of DFIG.