Single-Phase Ground Fault Location of Distribution Network with DG Based on CEEMD

2020 ◽  
Author(s):  
Qin Qingshan ◽  
Xie Xiuying ◽  
Tian Chongyi ◽  
Wang Ruiqi
Keyword(s):  
Fault Location ◽  
Single Phase ◽  
Distribution Network ◽  
Ground Fault

scholarly journals Reflected Traveling Wave Based Single-Ended Fault Location in Distribution Networks

Energies ◽  
2020 ◽  
Vol 13 (15) ◽  
pp. 3917 ◽  
Author(s):  
Yangang Shi ◽  
Tao Zheng ◽  
Chang Yang
Keyword(s):  
Traveling Wave ◽  
Power Distribution ◽  
Fault Location ◽  
Single Phase ◽  
Distribution Network ◽  
Distribution Networks ◽  
Power Distribution Networks ◽  
Reflected Waves ◽  
Ground Fault ◽  
Location Methods

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.

Transient Component-Based Distribution Network Single-Phase Ground Fault Location

2013 ◽  
Vol 448-453 ◽  
pp. 2498-2502
Author(s):  
Zeng Ping Wang ◽  
Jia Liu ◽  
Wei Hua Luo
Keyword(s):  
Fault Location ◽  
Single Phase ◽  
Theoretical Study ◽  
Distribution Network ◽  
Actual System ◽  
Ground Fault ◽  
Method Accuracy ◽  
Fault Information ◽  
Ground Fault Detection ◽  
Localization Criterion

The paper study the single-phase ground Fault Location. Which analysis neutral non-effectively grounded distribution network transient characteristics of single-phase. and verify the HHT method accuracy that through the actual system simulation of single-phase ground fault experiments .It proposed the fault localization criterion which is based on parameter identification. current single-phase ground fault detection and section targeting methods. The paper proposed the implementation which fault information is incomplete. It is help for theoretical study and power engineering..

Online Method for Location of Single Phase to Ground Fault through Cement Pole in Distribution Network

2014 ◽  
Vol 494-495 ◽  
pp. 1739-1742
Author(s):  
Hong Yu Yang
Keyword(s):  
Theoretical Analysis ◽  
Distribution System ◽  
Distribution Systems ◽  
Fault Location ◽  
Single Phase ◽  
Distribution Network ◽  
Voltage Gradient ◽  
Simulation Experiments ◽  
Location Method ◽  
Ground Fault

In China,most of distribution system is neutral noneffectively grounded. And the single-phase fault often happens through cement pole. In this paper,firstly,the voltage of the fault phase and the current of cement pole are derived in 10kV neutral noneffectively grounded distribution systems when cement pole has single-phase ground fault.Secondly,the online fault location method is proposed based on voltage gradient of cement pole.Thirdly,the resistence characristic of cement pole is analyzed and the distance obtained from the gradient voltage of cement pole is given.Finally, the theoretical analysis and simulation experiments show that the method is feasible.

A Distribution Network Fault Location Method Based on Reverse Wave and Wavelet Analysis

2015 ◽  
Vol 713-715 ◽  
pp. 1369-1372
Author(s):  
Xue Ming Zhai ◽  
Huan Xia ◽  
Long An
Keyword(s):  
Generating Functions ◽  
Fault Location ◽  
Single Phase ◽  
Travelling Waves ◽  
Distribution Network ◽  
Travelling Wave ◽  
Location Method ◽  
Ground Fault ◽  
Modulus Maximum ◽  
Network Fault

Based on the analysis of the transient process of the electric line’s developing ground fault, this paper applies the oppositely-directed travelling wave fault location method to fault location in distribution network. Simultaneously, this paper chooses proper wavelet generating functions to find the modulus maximum of oppositely-directed travelling waves and summarizes the methods and steps of this oppositely-directed travelling wave fault location. Finally, PSCAD/EMTDC is used to simulate the single-phase ground fault to verify the oppositely-directed travelling wave fault location method.

Research on Single-Phase Grounding Fault in Distribution Networks with a DC Power Positioning Method

2014 ◽  
Vol 530-531 ◽  
pp. 353-356
Author(s):  
Run Sheng Li
Keyword(s):  
Power Distribution ◽  
Single Phase ◽  
Distribution Network ◽  
Distribution Networks ◽  
Power Distribution Network ◽  
Power Outage ◽  
Location Method ◽  
Fault Resistance ◽  
Ground Fault ◽  
Positioning Method

Due to the high ground fault resistance and the complexity of power distribution network structure (such as too many nodes, branches and too long lines), adopting common traveling wave method and ac injection method can not effectively locate the single-phase grounding fault in the distribution network system.To solve above problems and determine the position of the point of failure prisely, this paper adopted the dc location method of injecting the dc signal from the point of failure under the power outage offline. This paper introduces the single phase dc method and the method of three phase dc, and the simulation shows that the dc location method is effective and feasible.

Sign in / Sign up

Export Citation Format

Share Document