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Title The study of ferroresonance effects in electric power equipment
Journal International journal of Engineering And Applied Science
Publisher Faculty of Engineering, Nnamdi Azikiwe University, Awka Nigeria.
Issue 1
ISSN 1119-8109
Pages 72-77
Subject Electrical Engineering
Date of Publication 2010

AUTHOR(S) O. A. Ezechukwu, J.O. Ikelionwu

ABSTRACT

Ferroresonance causes overvoltages and overcurrents which may jeopardize the safety of power system equipment. In this paper, a comprehensive study of the phenomenon was made using a 3 phase,core type,100kva,33/0.415kv Dy11 power transformer and Matlab simulations. Atani injection substation, in Onitsha, was taken as a model and parameters were taken from there for the studies. The results show that ferroresonce can cause dangerous over voltages and overcurrents in core type transformers. Methods of mitigating ` ferroresonance effects in power system equipment are also suggested.


Keywords: Ferroresonance; over-voltage; transformer; power system




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