Electrical and physical characterization of earth faults for diverse bush species

Engineering Science and Technology, an International Journal

Douglas Pinto Sampaio Gomes¹  Cagil Ozansoy² 

[1] College of Engineering and Science, Victoria University, PO Box 14428, Melbourne, Vic 8001, Australia;Corresponding author.;

关键词: Bush fires;    Conduction continuity;    High impedance fault;    Ignition stages;    RMS fault current;   

DOI  :  

来源: DOAJ

【 摘 要 】

High Impedance Faults (HIFs) are disturbances with a potential to ignite bush fires. This work focuses on presenting physical and electrical phenomena associated with earth faults for a range of bush species. Phase to earth bush faults are analyzed in terms of the fault current limit and speed/nature of the fault current’s development. HIFs that lead to fires are shown to differ in terms of conduction continuity from those that do not result in ignition. Three stages of ignition development are investigated governing the physical phenomena of ignition of a bush species under a HIF scenario. The change Δ in the averaged fault RMS current is shown to yield patterns that signify various stages of ignition. In particular, the first zero-crossing in the Δ has been shown to correlate to the point when ignition progresses from initial contact stage to the moisture expulsion stage.

【 授权许可】

Unknown