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A Metal‐Oxide Surge Arrester model with active V‐I characteristics
Author(s) -
Hagiwara Toyohisa,
Funabashi Toshihisa,
Watanabe Hideto,
Takeuchi Nobutaka,
Ueda Toshiaki
Publication year - 1997
Publication title -
electrical engineering in japan
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.136
H-Index - 28
eISSN - 1520-6416
pISSN - 0424-7760
DOI - 10.1002/(sici)1520-6416(199710)121:1<35::aid-eej5>3.0.co;2-0
Subject(s) - waveform , voltage , surge arrester , surge , nonlinear system , impulse (physics) , inductance , electrical engineering , equivalent circuit , engineering , transformer , mechanics , control theory (sociology) , materials science , physics , computer science , control (management) , quantum mechanics , artificial intelligence
Generally a model of Metal Oxide Surge Arrester (MOSA) for numerical analysis uses a nonlinear resistance. But actual Voltage‐Current (V‐I) characteristics of MOSA have a hysteresis loop in the time domain like the i‐Φ characteristic of a transformer and frequency dependency. The authors have investigated the relation between the actual V‐I hysteresis characteristics obtained by some current waveforms and the static V‐I characteristics. From the voltage difference between the above two characteristics, an equation was derived and a new model of MOSA was developed. This model consists of a nonlinear resistance representing the fundamental V‐I characteristic, a linear inductance, and a voltage source that depends on the absorbed energy. The calculated results by the proposed model are compared with measurement results by using the waveform of standard impulse current, steep front current, and oscillated current. The accuracy of the model has been confirmed to be satisfactory. The model is expected to be useful to investigate insulation coordination of power systems. © 1997 Scripta Technica, Inc. Electr Eng Jpn, 121 (1): 35–42, 1997