TRV under transformer limited fault condition and frequency-dependent transformer model

Autor:	Myomin Thein, Hiroaki Toda, Tadashi Koshizuka, Hisatoshi Ikeda, Eiichi Haginomori, Tetsuya Nakamoto, Masayuki Hikita
Rok vydání:	2011
Předmět:	Frequency response Leakage inductance Materials science business.industry Acoustics Linear variable differential transformer Electrical engineering Distribution transformer Current transformer law.invention law Rotary variable differential transformer Transformer Transformer effect business
Zdroj:	2011 IEEE Power and Energy Society General Meeting.
DOI:	10.1109/pes.2011.6039099
Popis:	The TRV amplitude factors of 4kVA and 300kVA transformers under transformer limited fault conditions were measured. The measured factors were 1.4 and were lower than the IEC standard. The frequency response of the transformer impedance was investigated using a frequency response analysis (FRA). FRA measurement graphs showed that the short-circuit inductance value of test transformers gradually decreases along with frequency. From this result, a frequency dependent transformer model was constructed. Simulated frequency response of transformer impedance was in good agreement with measured values. Simulated amplitude factor using frequency-dependent transformer model was 1.5 and is good agreement with measured values.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::4c4f99c0d28ec4f0bc82446acec60a9a https://doi.org/10.1109/pes.2011.6039099 Zobrazit plný text záznamu