Wavelet transform based power transmission line fault location using GPS for accurate time synchronization

2002 ◽  
Author(s):  
Gi-Taek Kim ◽  
Hyuck-Soo Kim ◽  
Hmg-Yong Choi
Keyword(s):  
Wavelet Transform ◽  
Transmission Line ◽  
Fault Location ◽  
Power Transmission ◽  
Time Synchronization ◽  
Power Transmission Line

Fault Location Scheme for Transmission Lines Using Kaiser Self-Convolution Windowed FFT Phase Comparison

2014 ◽  
Vol 596 ◽  
pp. 659-663
Author(s):  
Guo Chen Fan ◽  
Yong Li Zhu ◽  
Hong Wei Yan ◽  
Yan Feng Gao
Keyword(s):  
Transmission Line ◽  
Transmission Lines ◽  
Fault Location ◽  
Power Transmission ◽  
Phase Spectrum ◽  
Power Transmission Line ◽  
Excellent Performance ◽  
Location Accuracy ◽  
Spectral Leakage ◽  
Convolution Window

In order to improve the fault location accuracy, and eliminate the influence of spectral leakage in power transmission line fault location, we proposed a novel fault location scheme for transmission lines based on multi-measurements and phase comparison with Kaiser self-convolution windows FFT, which can locate the fault between two adjacent towers in the fault-prone segment. It is based Kaiser self-convolution window's excellent performance of leakage suppression, which can effectively solve the phase current fault component is relatively large errors due to spectral leakage problem. Firstly, this paper analyzes the causes of the phase spectrum leakage, then elaborates the sidelobe characteristics of Kaiser self-convolution window, and lists phase comparative fault location using steps, finally, verifies the correctness of the proposed method by simulation. The results show that the proposed method can effectively suppress spectral leakage, has a high location accuracy, a wide applicability and its solving of phase difference is precise.

scholarly journals Recovery time reduction of a damaged 6-35 kV transmission line after double earth fault applying the iteration fault location method

2018 ◽  
Vol 58 ◽  
pp. 01007 ◽  
Author(s):  
A.L. Kulikov ◽  
V.J. Osokin ◽  
M.D. Obalin
Keyword(s):  
Transmission Line ◽  
Power Supply ◽  
Recovery Time ◽  
Fault Location ◽  
Power Transmission ◽  
Power Transmission Line ◽  
Calculation Error ◽  
Location Method ◽  
Medium Voltage ◽  
Phase Coordinates

The task of determining the fault location on a power line is difficult and the longest operations to restore damaged areas of the network. Determining fault location with double earth faults is a priority due to the high wear of medium voltage networks and the absent of currently accurate algorithms. The usage of the phase coordinates method allows to obtain the calculated relations for determining the distances to the nearest and furthest point of damage. A significant increase in the accuracy is achieved by using iterative recalculation, the essence of which is to rectify such parameters as the transient resistance, the voltage at the neutral point of the load and the distance to the damage. The proposed algorithms allow reducing the calculation error and reducing the bypass zone of the damaged line, which in turn determines the power transmission line recovery time and increases the reliability of the power supply network.

Stabilization of a Power Transmission Line Oscillations

2002 ◽  
Vol 29 (3-4) ◽  
pp. 9
Author(s):  
M. I. Kazakevitch ◽  
Ye. V. Horokhov ◽  
M. S. Khorol'sky ◽  
S. V. Turbin
Keyword(s):  
Transmission Line ◽  
Power Transmission ◽  
Power Transmission Line
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