Elimination of chaotic ferroresonance in power system with nonliear core loss

Author

Hui, Meng ; Zhang, Yanbin ; Liu, Chongxin

Author_Institution

Sch. of Electr. Eng., Xi´´an JiaoTong Univ., Xi´´an, China

fYear

2009

fDate

16-19 Aug. 2009

Abstract

This paper investigates the chaotic behavior exhibited by a typical ferroresonant circuit in neutral-grounded system. In this paper the core loss of power transformer is modeled by a third order series in voltage and the magnetization characteristics of transformer is modeled by an 11th order two-term polynomial. Numerous simulations were carried out to analyze the effect of nonlinear core loss on transformer ferroresonance. The simulation results demonstrate that i) the core loss model of transformer is an important factor in obtaining the chaotic behavior of ferroresonance, ii) connecting the neutral resistance to the system exhibits a great mitigating effect on the voltage ferroresonance.

Keywords

ferroresonant circuits; losses; polynomials; power transformers; 11th order two-term polynomial; chaotic ferroresonance elimination; ferroresonant circuit; neutral-grounded system; nonliear core loss; power system; power transformer core loss; Analytical models; Chaos; Circuits; Core loss; Ferroresonance; Magnetization; Polynomials; Power system modeling; Power systems; Power transformers; chaotic behavior; ferroresonance; neutral resistance; nonlinear core loss;

fLanguage

English

Publisher

ieee

Conference_Titel

Electronic Measurement & Instruments, 2009. ICEMI '09. 9th International Conference on

Conference_Location

Beijing

Print_ISBN

978-1-4244-3863-1

Electronic_ISBN

978-1-4244-3864-8

Type

conf

DOI

10.1109/ICEMI.2009.5274248

Filename

5274248