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Development of a method for calculating the transmission‐line constants of a three‐phase enclosure‐type gas insulated bus taking the proximity effect into account
Author(s) -
Tanaka Yohei,
Yonezawa Rikido,
Noda Taku
Publication year - 2021
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/eej.23331
Subject(s) - enclosure , transmission line , emtp , admittance , electric power transmission , electrical impedance , method of moments (probability theory) , shunt (medical) , acoustics , engineering , mechanics , mathematical analysis , power (physics) , mathematics , electrical engineering , physics , electric power system , medicine , statistics , quantum mechanics , estimator , cardiology
Accurately calculating the transmission‐line constants of underground cables and gas insulated bus (GIB) is important for various types of power system simulations. When calculating the transmission‐line constants of a three‐phase enclosure‐type GIB, the Cable Constants supporting routine of EMTP is usually used. However, this routine could cause numerical errors, since the proximity effect is ignored for the calculation of series impedances and shunt admittances. In this paper, a method for calculating the transmission‐line constants of a three‐phase enclosure‐type GIB considering the proximity effect is proposed. Then, series impedances and shunt admittances are accurately calculated by the method of moments with a surface admittance operator (MoM‐SO) and method of moments (MoM), respectively. In this paper, the proposed method is verified by experiments using the small‐scale model of a three‐phase enclosure‐type GIB. Calculated results obtained by the proposed method agree well with the measured results.