Modeling of transient states is one of the important part of power system analysis. Also, the EMTP/ATP is the standard software widely used universally accepted program by the electrical engineers for digital simulation of Electromagnetic Transient phenomena , as well as electromechanically behaviors of electrical power systems . In this paper , a new method has been introduced to teach the Ms Students of electrical engineering as a part of power system transient course .Simulation of fault arc by EMTP/ATP has been presented in order to teach the principles fault arc modeling in power systems and to analyze the simulation results of transient states . As the first part of this paper, the fault arc model in power systems and its distinction in TACS has been clarified .At the second part, the step simulation of arc model in TACS has been presented. The effectiveness of this method has been shown in several semesters with more than 20 students and it can improve the understanding of TACS capabilities and fault arc mpdel.Modeling of transient states is one of the important part of power system analysis. Also, the EMTP/ATP is the standard software widely used universally accepted program by the electrical engineers for digital simulation of Electromagnetic Transient phenomena , as well as electromechanically behaviors of electrical power systems . In this paper , a new method has been introduced to teach the Ms Students of electrical engineering as a part of power system transient course .Simulation of fault arc by EMTP/ATP has been presented in order to teach the principles fault arc modeling in power systems and to analyze the simulation results of transient states . As the first part of this paper, the fault arc model in power systems and its distinction in TACS has been clarified .At the second part, the step simulation of arc model in TACS has been presented. The effectiveness of this method has been shown in several semesters with more than 20 students and it can i
