Analysis and Modeling of High Impedance Fault

International Journal of Electrical and Electronics Engineering
© 2015 by SSRG - IJEEE Journal
Volume 2 Issue 3
Year of Publication : 2015
Authors : Nikita Khandare, Prof. Mrs. Preeti Khatri
How to Cite?

Nikita Khandare, Prof. Mrs. Preeti Khatri, "Analysis and Modeling of High Impedance Fault," SSRG International Journal of Electrical and Electronics Engineering, vol. 2,  no. 3, pp. 1-5, 2015. Crossref,


 A high impedance fault (HIF) results when an energized primary conductor comes in contact with a quasiinsulating object such as a tree, structure or equipment, or falls to the ground. The significance of these previously undetectable faults is that they represent a serious public safety hazard as well as a risk of arcing ignition of fires. A high impedance fault is characterized by having impedance sufficiently high that it is not detected by conventional over current protection, such as fuses and over current relays. Unlike low impedance short circuits, which involve relatively large fault currents and are readily detectable by conventional over current protection, these HIFs represent little threat of damage to power system equipment. High impedance faults produce current levels in the 0 to 85 ampere range. Typically, an HIF exhibits arcing and flashing at the point of contact. In this paper, high impedance fault is analyzed and it is modeled using MATLAB Simulink tool for deploying proper protection scheme in distribution system.


 Distribution system, Fault detection, High Impedance Fault, HIF modeling, nonlinearity.


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