scholarly journals An improved natural frequency based transmission line fault location method with full utilization of frequency spectrum information

2021 ◽  
Author(s):  
Yuan Nie ◽  
Yu Liu ◽  
Dayou Lu ◽  
Binglin Wang
Keyword(s):  
Transmission Line ◽  
Natural Frequency ◽  
Frequency Spectrum ◽  
Fault Location ◽  
Location Method ◽  
Full Utilization

The Method Analysis of Overhead Transmission Line Single-Phase Grounding Fault Detection and Location

2014 ◽  
Vol 1030-1032 ◽  
pp. 1360-1365
Author(s):  
Yun Hong Dai ◽  
Shi Bin Liang ◽  
Ming Yao Hu ◽  
Ying Na Li ◽  
Zhen Gang Zhao ◽  
...  
Keyword(s):  
Fault Detection ◽  
Transmission Line ◽  
Fault Location ◽  
Single Phase ◽  
Small Current ◽  
Location Method ◽  
Overhead Transmission Line ◽  
Advantages And Disadvantages ◽  
Supply And Distribution ◽  
Space Truss

Small current grounding power system is widely used in overhead transmission line in medium voltage distribution network in China. Because of its long lines, branch, space truss structure is complex, low level of automation, It is easily influenced by outside force and the natural environment, and single-phase grounding failure rate is high. It is an important topic to quickly and accurately detect the location of the fault line, and improve the reliability of power supply and distribution system.This paper has carried on the induction and the comparison of various fault detection and location method of overhead transmission line which is currently used in single phase to ground, and analyzed their advantages and disadvantages,given the corresponding conclusions, provided the reference for finding out the reasonable single-phase earth fault location method or improvement.

Fault Location for Transmission Line with Shunt Reactors

2012 ◽  
Vol 605-607 ◽  
pp. 815-818
Author(s):  
Xin Dong Liu ◽  
Rong Guo ◽  
Rui Ming Zeng
Keyword(s):  
Transmission Line ◽  
Frequency Spectrum ◽  
Fault Location ◽  
Transient Signal ◽  
Fundamental Wave ◽  
Location Algorithm ◽  
Shunt Reactors

Taking the influence caused by shunt reactors into account, proposes a new fault location algorithm. Based on distributed modal, the algorithm constructs frequency spectrum equations of the faulty network with line parameters to identify, extracts fundamental wave and harmonics of transient signal to solve equations to obtain fault position and exact parameters.

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