سال انتشار: ۱۳۸۶

محل انتشار: بیست و دومین کنفرانس بین المللی برق

تعداد صفحات: ۸

نویسنده(ها):

Badrkhani – Electrical Engineering Department of Tehran University
Sanaye Pasand – Electrical Engineering Department of Tehran University

چکیده:

This paper investigates the effect of two types of the ferroresonance suppression circuits (FSC) on fast suppression of the phenomenon of
ferroresonance in coupling capacitor voltage transformers (CCVT). The magnetizing inductance of step down transformer is precisely modeled for factual simulation of ferroresonance oscillations in CCVT. It will be shown that by means of fine-tuning of suppression circuits using least squares curve fitting method, the transient response of the CCVT during faults and switching incidents can be improved in addition to fastsuppression of ferroresonance oscillations. The effect of passive overvoltage protection device on limiting the overvoltages during ferroresonance
oscillations is also investigated.