Modeling and experimental verification of high impedance arcing fault in medium voltage networks

Author

Elkalashy, Nagy I. ; Lehtonen, Matti ; Darwish, Hatem A. ; Izzularab, Mohamed A. ; Taalab, Abdel-Maksoud I.

Author_Institution

Power Syst. & High Voltage Eng., Helsinki Univ. of Technol., Espoo

Volume

14

Issue

2

fYear

2007

fDate

4/1/2007 12:00:00 AM

Firstpage

375

Lastpage

383

Abstract

A high impedance arcing fault due to a leaning tree in medium voltage (MV) networks is modeled and experimentally verified. The fault is represented in two parts; an arc model and a high resistance. The arc is generated by a leaning tree towards the network conductor and the tree resistance limits the fault current. The arcing element is dynamically simulated using thermal equations. The arc model parameters and resistance values are determined using the experimental results. The fault behavior is simulated by the ATP/EMTP program, in which the arc model is realized using the universal arc representation. The experimental results have validated the system transient model. Discrete wavelet transform is used to extract the fault features and therefore localize the fault events. It is found that arc reignitions enhance fault detection when discrete wavelet transform is utilized

Keywords

EMTP; arcs (electric); discrete wavelet transforms; fault currents; fault location; power distribution faults; power transmission faults; ATP-EMTP program; MV network; discrete wavelet transform; fault current; fault detection; fault feature extraction; high impedance arcing fault; leaning tree; medium voltage network; thermal equation simulation; transient model; Discrete wavelet transforms; EMTP; Equations; Immune system; Impedance; Medium voltage; Power engineering and energy; Power system modeling; Protection; Protective relaying;

fLanguage

English

Journal_Title

Dielectrics and Electrical Insulation, IEEE Transactions on

Publisher

ieee

ISSN

1070-9878

Type

jour

DOI

10.1109/TDEI.2007.344617

Filename

4150605