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Modeling ferroresonance phenomena on voltage transformer (VT)


Askari, Mohammad Tolou (2009) Modeling ferroresonance phenomena on voltage transformer (VT). Journal of Electrical Engineering, 9 (1). art. no. 9. pp. 1-8. ISSN 1582-4594


Ferroresonance in electromagnetic voltage transformers, fed through circuit breaker grading capacitance, is studied using nonlinear dynamics methods. The magnetising charact'eristic of a typical l00VA voltage transformer is represented by a single-valued two-term polynomial of the order seven.The system exhibits three types of ferroresonance: fundamental frequency ferroresonance, subharmonic ferroresonance and chaotic fcrroresonance, similar to high capacity power transformers fed through capacitive coupling from neighbouring lines or phases. Results also show that while fundamental frequency and subharmonic ferroresonancc can occur under commonplace operating conditions, chaotic states are unlikely in practice.

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Additional Metadata

Item Type: Article
Divisions: Faculty of Engineering
Publisher: Politechnica Publishing House
Keywords: Ferroresonance; Voltage transformer; ATP; Overvoltage; Transient analysis
Depositing User: Fatimah Zahrah @ Aishah Amran
Date Deposited: 27 Dec 2014 02:30
Last Modified: 24 Nov 2015 08:14
URI: http://psasir.upm.edu.my/id/eprint/15661
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