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A wave‐front‐time dependent corona model for transmission‐line surge calculations
Author(s) -
Noda Taku,
Nose Naoko,
Nagaoka Naoto,
Ametani Akihiro
Publication year - 1999
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(199910)129:1<29::aid-eej4>3.0.co;2-g
Subject(s) - corona (planetary geology) , transmission line , surge , nonlinear system , voltage , electric power transmission , discretization , corona discharge , physics , mechanics , line (geometry) , lightning (connector) , computational physics , electrical engineering , engineering , mathematical analysis , mathematics , geometry , power (physics) , quantum mechanics , astrobiology , venus
For transmission‐line surge studies, the inclusion of corona discharge due to high voltage surges is important as well as the inclusion of frequency‐dependent effects. Because the charge‐voltage (q‐v) curve of a lightning surge is different from that of a switching surge, a corona model should reproduce different q‐v curves for different wave‐front times. The present paper proposes a wave‐front time dependent corona model which can express the dependence by a simple calculation procedure as accurately as a rigorous finite‐difference method which requires an enormous calculation time. The simplicity enhances the incorporation of the corona model into a line model, because a large number of models are to be inserted into the line model by discretization. The q‐v curves calculated by the proposed method agrees well with field tests. This paper also proposes an efficient method to deal with nonlinear corona branches in distributed‐parameter line model using the trapezoidal rule of integration and the predictor‐corrector method. © 1999 Scripta Technica, Electr Eng Jpn, 129(1): 29–38, 1999