Abstract: Without discriminating the nature of faults, the traditional three-phase reclosing performs after a set period of time, so the failure of reclosing will result in a secondary impact on the system. In order to avoid the damage of secondary impact caused by reclosing onto a permanent fault and increase the successful rate of reclosing, this paper proposes an adaptive three-phase reclosing strategy, which injects a voltage signal through the secondary side of the voltage transformer. According to the voltage on the primary port of the voltage transformer, this strategy determines whether the insulation of phase-to-phase fault points is recovered on the distribution network without shunt reactors, and whether it is time to reclose based on the nature of faults. After theoretical derivation and simulation verification on the PSCAD/EMTDC platform, the results prove that the proposed adaptive reclosing strategy can distinguish between a transient fault and a permanent fault, and prevent reclosing of distribution lines which tripping due to a permanent fault.