A Study on the Accuracy and Stability of Cable Internal Impedances

カテゴリ: 研究会(論文単位)

論文No: HV20002

グループ名: 【B】電力・エネルギー部門 高電圧研究会

発行日: 2020/01/23

タイトル(英語): A Study on the Accuracy and Stability of Cable Internal Impedances

著者名: Zhao Huanfeng(University of Manitoba),Ametani Akihiro (University of Manitoba),Gole Aniruddha(University of Manitoba),Silva Jeewantha(Manitoba Hydro International),N/A N/A(N/A),N/A N/A(N/A),N/A N/A(N/A),N/A N/A(N/A),N/A N/A(N/A),N/A N/A(N/A),N/A N/A(N/A),

著者名(英語): Huanfeng Zhao(University of Manitoba),Akihiro Ametani(University of Manitoba),Aniruddha Gole(University of Manitoba),Jeewantha Silva(Manitoba Hydro International),N/A N/A(N/A),N/A N/A(N/A),N/A N/A(N/A),N/A N/A(N/A),N/A N/A(N/A),N/A N/A(N/A),N/A N/A(N/A),N/A N/A(N/A),N/A N/A(N/A),N/A N/A(N/A),N/A N/A(N/A)

キーワード: Cable|internal impedance|EMTP|accuracy|stability|Cable|internal impedance|EMTP|accuracy|stability

要約(日本語): This paper investigates the accuracy and numerical stability of cable internal impedances implemented in existing EMTPs. Schelkunoff’s impedance formula occasionally results in numerical instability because of a number of modified Bessel’s functions with complex variables. Closed-form formulas are in general stable, but an exponential function involved in complex hyperbolic functions can become too large and can give an in-correct result. Especially when a commercial software is used, a care should be taken.

要約(英語): This paper investigates the accuracy and numerical stability of cable internal impedances implemented in existing EMTPs. Schelkunoff’s impedance formula occasionally results in numerical instability because of a number of modified Bessel’s functions with complex variables. Closed-form formulas are in general stable, but an exponential function involved in complex hyperbolic functions can become too large and can give an in-correct result. Especially when a commercial software is used, a care should be taken.

原稿種別: 英語

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