Open AccessAnalytical expression for estimation of the fault location in cable line
Author(s) -
Liu Xin,
Wang Hui
Publication year - 2020
Publication title -
iet science, measurement and technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.418
H-Index - 49
eISSN - 1751-8830
pISSN - 1751-8822
DOI - 10.1049/iet-smt.2019.0462
Subject(s) - transmission line , fault (geology) , coaxial cable , line (geometry) , electrical impedance , expression (computer science) , electric power transmission , computer science , electronic engineering , terminal (telecommunication) , engineering , electrical engineering , telecommunications , mathematics , geology , geometry , cable gland , seismology , programming language
A new method for the fault location in a short cable line is proposed in this study. Based on the transmission line theory and circuit theorems, an analytical expression for estimating the fault location in the cable line is derived. According to the problem of incorrect estimation in the high‐frequency band, the corresponding essential reason is comprehensively explained. By solving this problem, the fault location can be obtained accurately by the proposed method. To validate the proposed method, some experiments with a 50 Ω coaxial cable are implemented and the accuracy of the proposed method is tested. Meanwhile, it has been validated in these experiments that the proposed method is independent of the fault impedance and terminal impedances.