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An evaluation method for power transfer capability enhanced by lightning countermeasures
Author(s) -
Takahashi Kazuhiro,
Inoue Atsuyuki,
Tanaka Kazuyuki
Publication year - 1996
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.4391160303
Subject(s) - maximum power transfer theorem , overhead (engineering) , lightning (connector) , electric power transmission , reliability engineering , power transmission , transmission line , reliability (semiconductor) , transfer (computing) , transmission (telecommunications) , ground , probabilistic logic , fault (geology) , power (physics) , computer science , electric power system , engineering , electronic engineering , electrical engineering , artificial intelligence , physics , quantum mechanics , seismology , parallel computing , geology
Various countermeasures are taken against lightning faults in power transmission lines to decrease their occurrence and improve transmission reliability. However, how much they enhance the power transfer capability has not yet been quantitatively evaluated. The conventional deterministic approach, which is widely used in power system planning methodology, is inadequate to deal with this issue. This paper proposes a new method for numerically defining the power transfer capability enhanced by countermeasures against lightning. The proposed method is based on a probabilistic approach in which several fault patterns are taken into consideration with their occurrence frequency and maximum transferable power. This paper also gives an example application of the proposed method to a model trunk transmission system. The effect of a third overhead ground wire on the increase of transfer capability of a 500 kV transmission line has been quantitatively evaluated.