Analysis of ferroresonance in a neutral grounding system with nonlinear core loss

作者：Hui Meng^*; Zhang Yan Bin; Liu Chong Xin

来源：Chinese Physics B, 2009, 18(5): 1787-1791.

DOI：10.1088/1674-1056/18/5/012

• ferroresonance
• chaotic behaviour
• nonlinear core loss

The chaotic behaviour exhibited by a typical ferroresonant circuit in a neutral grounding system is investigated in this paper. In most earlier ferroresonance studies the core loss of the power transformer was neglected or represented by a linear resistance. However, this is not always true. In this paper the core loss of the power transformer is modelled by a third order series in voltage and the magnetization characteristics of the transformer are modelled by an 11th order two-term polynomial. Extensive simulations are carried out to analyse the effect of nonlinear core loss on transformer ferroresonance. A detailed analysis of simulation results demonstrates that, with the nonlinear core loss model used, the onset of chaos appears at a larger source voltage and the transient duration is shorter.

• 出版日期2009-5
• 单位西安交通大学