Proceedings of the KIEE Conference (대한전기학회:학술대회논문집)
- 2009.07a
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- Pages.42_43
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- 2009
Analysis and simulation of PT ferroresonance
PT철공진의 원인분석 및 현상모의
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Kang, Yong-Cheol
(Chonbuk National University) ;
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Lee, Byung-Eun
(Chonbuk National University) ;
- Zheng, Tai-Ying (Chonbuk National University) ;
- Jang, Sung-Il (Hankook IED Inc.) ;
- Kim, Yong-Gyun (Hankook IED Inc.)
- Published : 2009.07.14
Abstract
Ferroresonance is a resonance condition between a nonlinear iron core of a potential transformer (PT) and a capacitance. It can lead to PT voltages several times the normal equipment ratings, and cause the isolation broken and damage to equipments near the PT. This paper proposes a analysis method of PT ferroresonance in the time domain. Based on the simplified equivalent circuit, a differential equation was found and the flux was calculated when ferroresonance generates. The forced response and natural response were also analyzed. The performance of proposed analysis method was verified with the EMTP-RV generated data. The method can help analysis chaotic ferroresonance and periodic ferroresonance.
Keywords