Fault section identification of distribution network based on zero sequence current distribution characteristics

2021 ◽  
Author(s):  
Yirong Su ◽  
Weiwei Zhang ◽  
Huamin Liang ◽  
Lutong Yang
Keyword(s):  
Current Distribution ◽  
Distribution Network ◽  
Distribution Characteristics ◽  
Zero Sequence ◽  
Fault Section Identification

scholarly journals A novel fault section locating method based on distance matching degree in distribution network

2021 ◽  
Vol 6 (1) ◽  
Author(s):  
Zhenxing Li ◽  
Jialing Wan ◽  
Pengfei Wang ◽  
Hanli Weng ◽  
Zhenhua Li
Keyword(s):  
Single Phase ◽  
Distribution Network ◽  
Matlab Simulink ◽  
Grounding Resistance ◽  
Blind Zone ◽  
System Transition ◽  
Transition Resistance ◽  
Zero Sequence ◽  
Matching Degree ◽  
Amplitude Characteristics

AbstractFault section location of a single-phase grounding fault is affected by the neutral grounding mode of the system, transition resistance, and the blind zone. A fault section locating method based on an amplitude feature and an intelligent distance algorithm is proposed to eliminate the influence of the above factors. By analyzing and comparing the amplitude characteristics of the zero-sequence current transient components at both ends of the healthy section and the faulty section, a distance algorithm with strong abnormal data immune capability is introduced in this paper. The matching degree of the amplitude characteristics at both ends of the feeder section are used as the criterion and by comparing with the set threshold, the faulty section is effectively determined. Finally, simulations using Matlab/Simulink and PSCAD/EMTDC show that the proposed section locating method can locate the faulty section accurately, and is not affected by grounding mode, grounding resistance, or the blind zone.

scholarly journals Voltage Protection and Harmonics Cancellation in Low Voltage Distribution Network

2018 ◽  
Vol 7 (04) ◽  
pp. 01-07
Author(s):  
Prof. Amruta Bijwar, Prof. Madhuri Zambre
Keyword(s):  
Direct Current ◽  
Current Distribution ◽  
Low Voltage ◽  
Distribution Network ◽  
Control Unit ◽  
Future Generation ◽  
Distribution Networks ◽  
Current Control ◽  
Voltage Distribution ◽  
Monitor Function

Nowadays low voltage distribution network is considered as worldwide future generation distribution network. But the major concern is harmonics generation and steps taken to cancel those harmonics. In our proposed work, low voltage distribution network is designed with low voltage and harmonics are cancelled in our method. The combination of current control unit and voltage control unit will give extra reliable power solution to increase the required capacity of low voltage grids. The high voltage protection gears are used in worst environment for low voltage and low current distribution network test is preferable to assess a variety of operation uniqueness. Therefore, it has few restrictions in implementation of economic in addition to process methodologies. In our work a 48V direct current base up-scale low voltage distribution network test is urbanized to allow the copy and surveillance of a variety of phenomenon of direct current distribution networks. The proposed system provide stretchy pattern ability by introduce S-connectors and T-connectors module that will be proscribed distantly, and near real time monitor function through by means of a data acquisition system associated toward the nodes. Each connector be able to calculate Power, Voltage and current with up to 250 kHz frequency. To calculate power quality and to understand the performance of the distribution network, frequency analysis is required along with collected data.

Development of new concept optical zero-sequence current/voltage transducers for distribution network

1991 ◽  
Vol 6 (1) ◽  
pp. 414-420 ◽  
Author(s):  
E. Aikawa ◽  
A. Ueda ◽  
M. Watanabe ◽  
H. Takahashi ◽  
M. Imataki
Keyword(s):  
Distribution Network ◽  
Current Voltage ◽  
Zero Sequence

Development of New Concept Optical Zero-Sequence Current/Voltage Transducers for Distribution Network

1991 ◽  
Vol 11 (1) ◽  
pp. 68
Author(s):  
E. Aikawa ◽  
A. Ueda ◽  
M. Watanabe ◽  
H. Takahashi ◽  
M. Imataki
Keyword(s):  
Distribution Network ◽  
Current Voltage ◽  
Zero Sequence
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