Power systems are subjected to all kinds of random disturbances, showing the electromechanical dynamic. A lot of theoretical researches show that the disturbance power and frequency is propagating in the form of wave which is called electromechanical wave. But electromechanical wave theory is not widely used in actual power system. In this paper we focus on simulation study of electromechanical wave frequency sensitivity and propagation velocity and elaborating the simulation results with the electromechanical wave theory. Finally some summaries and expectations on electromechanical wave study are made.
 Tsai, S.S., Zhang, L., Phadke, A.G., et al. (2004) Study of Global Frequency Dynamic Behavior of Large Power Systems. Proceedings of 2004 IEEE PES Power Systems Conference and Exposition, New York, 10-13 October 2004.
 Tsai, S.-J., Zhang, L., Phadke, A.G., et al. (2007) Frequency Sensitivity and Electromechanical Propagation Simulation Study in Large Power Systems. IEEE Transactions on Circuits and Systems I: Regular Papers, 54, 1819-1828. http://dx.doi.org/10.1109/TCSI.2007.902542
 Semlyen, A. (1974) Analysis of Disturbance Propagation in Power Systems Based on a Homogeneoue Dynamic Model. IEEE Transactions on Power Apparatus and Systems, 93, 676-684. http://dx.doi.org/10.1109/TPAS.1974.294030
 Cresap, R.L. and Hauer, J.F. (1981) Emergence of a New Swing Mode in the Western Power System. IEEE Transactions on Power Apparatus and Systems, 100, 2037-2045. http://dx.doi.org/10.1109/TPAS.1981.316481
 Hauer, J.F. and Cresap R.L. (1981) Measurement and Modeling of Pacific AC Intertie Response to Random Load Switching. IEEE Transactions on Power Apparatus and Systems, 100, 353-359. http://dx.doi.org/10.1109/TPAS.1981.316863
 Thorp, J.S., Seyler, C.E. and Phadke, A.G. (1998) Electromechanical Wave Propagation in Large Electric Power Systems. IEEE Transactionson Circuits and Systems I: Fundamental Theory and Applications, 45, 614-622. http://dx.doi.org/10.1109/81.678472
 Parashar, M., Thorp, J.S. and Seyler, C.E. (2004) Continuum Modeling of Electromechanical Dynamics in Large-Scale Power Systems. IEEE Transactions on Circuits and Systems I: Regular Papers, 51, 1848-1858. http://dx.doi.org/10.1109/TCSI.2004.834480
 Thomas, A.J. and Mahajan, S.M. (2009) Electromechanical Wave Analysis through Transient Magnetic Modeling. IEEE Transactions on Power Delivery, 24, 2336-2343. http://dx.doi.org/10.1109/TPWRD.2009.2027504
 Scott, B. and Liu, Y.L. (2012) Electromechanical Wave Green’s Function Estimation from Ambient Electrical Grid Frequency Noise. 45th Hawaii International Conference on System Science (HICSS), Maui, 4-7 January 2012.