One of the most challenging events for distance relays is a transient phenomenon known as power swing, which can have damaging results to the system. The occurrence of power swing can cause the impedance trajectory to enter protective zones of distance relays that may lead them to the wrong operation. Malfunction of distance relays can create instability in power systems, and a large blackout may occur in these networks. The purpose of this paper is to introduce a new method based on using the mean value of sampled data from the current signal to recognize power swing from simultaneous faults. This method has been tested using DIgSILENT and MATLAB software on a two-bus network with parallel lines. The obtained results demonstrate that the proposed scheme is capable of detecting various types of power swings, including both unstable and stable power swing. The presented method in this paper also has an accurate operation to detect simultaneous symmetric faults. Besides, this method is planned for a protection system with a central controller using the IEC-61850 standard.