  This study presents a method to locate power system disturbance using
wide-area synchrophasor measurements. The merits of the proposed method include
robustness and easy for visualization. In addition, the proposed method
facilitates the calculation of electromechanical wave propagation speed
distribution. An example of locating the disturbance and generating the
propagation speed distribution is demonstrated based on FNET/GridEye, a
distribution-level wide-area measurement system. Without losing generality, the
proposed method can be implemented in any other wide-area measurement systems.
