Paper Info
Title
Location of Single Phase to Ground Faults in Distribution Networks Based on Synchronous Transients Energy Analysis
Abstract
As a result of small fault current, high level of noise and a large penetration of distributed generators (DG), in the neutral non-effectively grounded medium-voltage (MV) distribution networks, it is quite difficult to locate the faulted line section for single phase to ground faults. In this paper, using a technique based on synchronized measurements in distribution networks, a fault location method based on the analysis of the energy of the transient zero-sequence current in the selected frequency band (SFB) is proposed. The equivalent impedance of the distribution network with lateral branches is studied with an equivalent network, and the phase-frequency characteristics of the equivalent impedance are analyzed. The SFB, within which the transient energy of the faulty line section is larger than that of the healthy line sections is determined. A combined fault-section location criterion is proposed and the implementation scheme is illustrated with the distribution level phasor measurement units. Numerical simulations of the IEEE 34 node system and the field experiments of a 10kV distribution network validate the feasibility and effectiveness of the proposed method.
Year
DOI
Venue
2020
10.1109/TSG.2019.2938667
IEEE Transactions on Smart Grid
Keywords
DocType
Volume
Active distribution networks,fault location,neutral non-effectively grounded system,single phase to ground faults,transient zero-sequence current
Journal
11
Issue
ISSN
Citations 
1
1949-3053
3
PageRank 
References 
Authors
0.45
0
7
Name
Order
Citations
PageRank
Xuewen Wang130.45
Hengxu Zhang230.45
Fang Shi330.45
Qiuwei Wu46019.97
Vladimir V. Terzija58014.28
Wei Xie631.13
Chen Fang730.45