Abstract—In this work, an overview of available papers are provided, at first ferroresonance phenomenon is introduced and then various type of ferroresonance in a potential transformer is simulated, then effect of neutral earth resistance on the onset of chaotic ferroresonance and duration of chaotic transient in a potential transformer including nonlinear core losses has been studied. It is expected that this resistance generally cause controlling ferroresonance overvoltages. The proposed approach was implemented using MATLAB, and results are presented. For confirmation this aspect simulation has been done on a one phase potential transformer rated 100VA, 275kV. Core losses is modelled in terms of voltage and includes nonlinearities in core losses .The simulation results show that connecting the neutral earth resistance on the system configuration, shows a great controlling effect on ferroresonance overvoltages.
Index Terms—Ferroresonance oscillation, stabilizing, chaos control, potential transformer, nonlinear core losses effect, neutral earth resistance.
Hamid Radmanesh is with the Electrical Engineering Department, Shahab Danesh Institute of Higher Education, ghom, Iran (e-mail: Hamid.firstname.lastname@example.org).
Hamid Mohammad Hossein is with Department of National Defence, Supreme National Defence University, Tehran, Iran.(e-mail: Hmh.email@example.com)
Moammad Bakhshandeh is with Aeronautical University of Science and Technology, Tehran, Iran. (e-mail: Hamid.firstname.lastname@example.org).
Cite: Hamid Radmanesh, Hamid Mohammad Hossein, and Mohammad Bakhshandeh, "Damping Nonlinear Oscillations in Potential Transformers Including Hysteresis Effect," International Journal of Modeling and Optimization vol. 2, no. 4, pp. 400-403, 2012.