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Fault Line Detection Methodology for Four Parallel Lines on the Same Tower
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 Title & Authors
Fault Line Detection Methodology for Four Parallel Lines on the Same Tower
Li, Botong; Li, Yongli; Yao, Chuang;
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 Abstract
A method for faulted line detection of four parallel lines on the same tower is presented, based on four-summing and double-differential sequences of one terminal current. Four-summing and double-differential sequences of fault current can be calculated using a certain transformation matrix for parameter decoupling of four parallel transmission lines. According to fault boundary conditions, the amplitude and phase characteristics of four-summing and double-differential sequences of fault current is studied under conditions of different types of fault. Through the analysis of the relationship of terminal current and fault current, a novel methodology for fault line detection of four parallel transmission line on the same tower is put forward, which can pick out the fault lines no matter the fault occurs in single line or cross double lines. Simulation results validate that the methodology is correct and reliable under conditions of different load currents, transient resistances and fault locations.
 Keywords
Four parallel lines on the same tower;Fault line detection;Fault in single line;Fault cross double lines;Four-summing sequence;Double-differential sequence;
 Language
English
 Cited by
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