Configurable stochastic model for high impedance faults simulations in electrical distribution systems

2022 ◽  
Vol 205 ◽  
pp. 107686
Author(s):  
L.H.P.C. Trondoli ◽  
G.N. Lopes ◽  
J.C.M. Vieira
Keyword(s):  
Stochastic Model ◽  
Distribution Systems ◽  
Electrical Distribution Systems ◽  
High Impedance ◽  
Electrical Distribution ◽  
High Impedance Faults

Phase balancing for aircraft electrical distribution systems

2015 ◽  
Vol 51 (3) ◽  
pp. 1781-1792 ◽  
Author(s):  
Michael Terorde ◽  
Housam Wattar ◽  
Detlef Schulz
Keyword(s):  
Distribution Systems ◽  
Electrical Distribution Systems ◽  
Electrical Distribution

scholarly journals Analysis of High Impedance Faults Current Using Fourier, Wavelet and Stockwell Transforms

2020 ◽  
Author(s):  
Gabriela N. Lopes ◽  
Luiz H. P. C. Trondoli ◽  
José Carlos M. Vieira
Keyword(s):  
Distribution Systems ◽  
Test Field ◽  
Medium Voltage ◽  
Detection Techniques ◽  
Promising Tool ◽  
High Impedance ◽  
Random Behavior ◽  
Key Characteristics ◽  
High Impedance Faults ◽  
High Degree

Detection of high impedance faults (HIFs) in distribution systems is a challenging task, which has attracted the interest of the researchers for decades. The HIF current random behavior and its lowmagnitude cause difficulties for a reliable detection by traditional protection methods. Therefore, the hazards for grid devices, people and animals safety, associated with HIFs, motivate the research of new detection techniques. However, there is no fully efficient solution for this problem. In this context, this paper aimed to characterize HIFs by a set of real measurements considering different type of soils employing Fourier (FT), Wavelet (WT) and Stockwell Transforms (ST). The measurements were performed at the fault spot in a medium voltage test field specially built for this purpose. The idea is to highlight key characteristics of the HIF current waveforms pointed out by each of transform and assess which ones can be used as a promising tool for HIF detection. The results showed that the HIF current can be characterized by the interharmonic behavior during the fault, extracted by FT and by the high degree of energy variations at specific decomposition levels of WT and ST.

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