Applying Dynamic Load Estimation and Distributed-parameter Line Model to Enhance the Accuracy of Impedance-based Fault-location Methods for Power Distribution Networks

2013 ◽  
Vol 41 (14) ◽  
pp. 1334-1362 ◽  
Author(s):  
Rahman Dashti ◽  
Javad Sadeh
Energies ◽  
2020 ◽  
Vol 13 (15) ◽  
pp. 3917 ◽  
Author(s):  
Yangang Shi ◽  
Tao Zheng ◽  
Chang Yang

Traveling wave (TW)-based fault-location methods have been used to determine single-phase-to-ground fault distance in power-distribution networks. The previous approaches detected the arrival time of the initial traveling wave via single ended or multi-terminal measurements. Regarding the multi-branch effect, this paper utilized the reflected waves to obtain multiple arriving times through single ended measurement. Potential fault sections were estimated by searching for the possible traveling wave propagation paths in accordance with the structure of the distribution network. This approach used the entire propagation of a traveling wave measured at a single end without any prerequisite of synchronization, which is a must in multi-terminal measurements. The uniqueness of the fault section was guaranteed by several independent single-ended measurements. Traveling waves obtained in a real 10 kV distribution network were used to determine the fault section, and the results demonstrate the significant effectiveness of the proposed method.


IEEE Access ◽  
2019 ◽  
Vol 7 ◽  
pp. 181972-181982 ◽  
Author(s):  
Rui Chen ◽  
Xin Yin ◽  
Xianggen Yin ◽  
Yilin Li ◽  
Jiayuan Lin

2018 ◽  
Vol 8 (7) ◽  
pp. 1034 ◽  
Author(s):  
Rahman Dashti ◽  
Seyed Salehizadeh ◽  
Hamid Shaker ◽  
Maryamsadat Tahavori

IEEE Access ◽  
2018 ◽  
Vol 6 ◽  
pp. 1342-1349 ◽  
Author(s):  
Rahman Dashti ◽  
Mohammad Daisy ◽  
Hamid Reza Shaker ◽  
Maryamsadat Tahavori

2011 ◽  
Vol 383-390 ◽  
pp. 2479-2483
Author(s):  
Qiao Lin Ding ◽  
Zhen Dong Yang ◽  
Ru Jun Xu

The 10kV distribution networks have complicated geographical environment and the lines with many branches, as well as high grounding resistance at fault point, thus result the difficult of locating fault. Traveling wave fault-location methods locate fault by the time of traveling wave from fault point to receiver or wave subtraction from fault point to two sides receivers, and the advantages of the methods are fast and have high precision. This paper introduced A, B, C, E four types traveling wave fault-location methods and their characteristics. Many simulations are taken for single-phase earth fault in a 10kV power distribution line with branches. By comparing the waves reflected from normal line and the fault one, the fault distance is determined by the first distortion point. As a result, the simulations indicate that the fault-location precision meet the actual requirement, Type C traveling wave fault-location method is feasible for the fault location in distribution networks.


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