Title :
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
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;
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
DOI :
10.1109/ICEMI.2009.5274248
