scholarly journals Accurate Location of Faults in Transmission Lines by Compensating for the Electrical Distance

Energies ◽  
2020 ◽  
Vol 13 (3) ◽  
pp. 767
Author(s):  
Xue Xue ◽  
Menghan Cheng ◽  
Tianyu Hou ◽  
Guanhua Wang ◽  
Nan Peng ◽  
...  
Keyword(s):  
Transmission Lines ◽  
Traveling Wave ◽  
Line Length ◽  
High Accuracy ◽  
Wave Method ◽  
Not Given ◽  
Transmission Line Model ◽  
Geographical Environment ◽  
Error Ratio ◽  
Traveling Wave Method

Accurately locating faults is quite important, especially when the geographical environment is complicated. If the exact location of the fault is not given, wrong route would be chosen, which will greatly slow down repair. This paper proposes an improved traveling wave method by compensating the electrical distance of transmission lines. The catenary model is constructed that considers parameters of the tower and the actual temperature. The actual line length is also derived by the catenary model. A 500 kV transmission line model is established by PSCAD/EMTDC. Various fault simulations are conducted and the results demonstrate that the presented method effectively reduces the error ratio of faulty segment positioning and locates faults with high accuracy.

Optimal Control of the Valve Based on Traveling Wave Method in the Water Hammer Process

2011 ◽  
Author(s):  
H. Z. Cao ◽  
F. Wang ◽  
J. L. Feng ◽  
H. P. Tan ◽  
Jiachun Li ◽  
...  
Keyword(s):  
Optimal Control ◽  
Traveling Wave ◽  
Water Hammer ◽  
Wave Method ◽  
Traveling Wave Method

scholarly journals Soliton dynamics in optical fibers using the generalized traveling-wave method

2016 ◽  
Vol 93 (4) ◽  
Author(s):  
Niurka R. Quintero ◽  
Franz G. Mertens ◽  
Anatoly Efimov ◽  
A. R. Bishop
Keyword(s):  
Optical Fibers ◽  
Traveling Wave ◽  
Wave Method ◽  
Soliton Dynamics ◽  
Traveling Wave Method

Damage Analysis of One-Dimensional Euler–Bernoulli Cracked Beam with Traveling Wave Method

2017 ◽  
Vol 09 (04) ◽  
pp. 1750048 ◽  
Author(s):  
Ya-Qiong Tang ◽  
Tuan-Jie Li ◽  
Qiong-Yao Yan
Keyword(s):  
Traveling Wave ◽  
Power Flow ◽  
Continuous Model ◽  
Analytic Solutions ◽  
Wave Method ◽  
Cracked Beam ◽  
Bending Vibration ◽  
One Dimensional ◽  
Flow Response ◽  
Traveling Wave Method

Based on the elastic fracture mechanics, we establish a continuous model of one-dimensional Euler–Bernoulli cracked beam using the traveling wave method, and analyze the damage characteristics of cracked beam through the changes of deflection and power flow response. First, the control equation of bending vibration of healthy beam is deduced by traveling wave method. Then, the reflection and transmission matrices of waves at force point, constraint point, crack point are derived. The analytic solutions of deflection and power flow are expressed explicitly as the function of crack location and size. The effects of crack width and depth on deflection and power flow response of cracked beam are revealed. Finally, the numerical example illustrates the effectiveness of the proposed method.

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