Impedance and Admittance of HVDC Overhead Transmission Lines

カテゴリ: 研究会(論文単位)

論文No: HV21045

グループ名: 【B】電力・エネルギー部門 高電圧研究会

発行日: 2021/01/25

タイトル(英語): Impedance and Admittance of HVDC Overhead Transmission Lines

著者名: 雨谷 昭弘(Uniivercity of manitoba / 中部大学),Liu John (Uniivercity of manitoba),Silva De Jeewantha(Manitoba Hydro International),Gole Anirudaha(Uniivercity of manitoba),山本 和男(中部大学)

著者名(英語): Akihiro Ametani(Uniiversity of manitoba / Chubu Univercity),John Liu(Uniiversity of manitoba),Jeewantha Silva De(Manitoba Hydro International),Anirudaha Gole(Uniivercsty of manitoba),Kazuo Yamamoto(Chubu University)

キーワード: Impedance|admittance|high-voltage|direct-current transmission|frequency zero|overhead line

要約(日本語): This paper investigates the basic electric parameters (impedance and admittance) of high-voltage dc (HVDC) transmission lines. It is made clear that the widely adopted Carson’s earth-return impedance cannot be used as the frequency approaches zero because

要約(英語): This paper investigates the basic electric parameters (impedance and admittance) of high-voltage dc (HVDC) transmission lines. It is made clear that the widely adopted Carson’s earth-return impedance cannot be used as the frequency approaches zero because the inductance tends to infinity. An accurate calculation of the earth-return impedance shows the inductance converging to a constant as f ? 0. However, the propagation velocity and characteristic impedance will tend to zero and infinity respectively if the accurate calculation is adopted. This problem is solved by adopting a distortion-less line concept. The concept enables the estimation of the transmission line’s conductance, either theoretically or by using a monitored voltage. Frequency responses of the wave propagation parameters using the estimated conductance, inductance together with the known dc resistance and space capacitance show physically reasonable characteristic of the HVDC transmission line.

本誌: 2021年1月28日・29日高電圧研究会

本誌掲載ページ: 61-66 p

原稿種別: 英語

PDFファイルサイズ: 1,269 Kバイト