This paper proposes a new faulted phase selection scheme for transmission lines in power systems. The proposed scheme originally develops a virtual instantaneous energy for the current and voltage signals; then utilizes the ratio of the instantaneous energy of current to that of the voltage as an index for phase selection; finally compares the indexes with their corresponding thresholds to select the faulted phases. A typical double source-supplied power system is established in PSCAD/EMTDC to verify the proposed scheme. The simulation results have demonstrated that the proposed method can select the faulted phases correctly under different fault conditions such as different fault resistances, fault locations and fault inception angles. Moreover, it has a considerable fast respond speed to a fault, is immune to white Gaussian noise and tolerant of high fault resistances.