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New insight into the detection of high-impedance arcing faults on DC trolley systems.

Authors
Li J; Kohler JL
Source
IEEE Trans Ind Appl 1999 Sep/Oct; 35(5):1169-1173
Link
https://doi.org/10.1109/28.793379
NIOSHTIC No.
20000812
Abstract
High-impedance arcing faults are difficult to detect with conventional switchgear, and the presence of these faults in coal mine power systems represents a significant fire hazard. Research was performed to identify plausible techniques that would discriminate between the high-impedance arcing faults and legitimate load currents on the dc trolley system. This paper briefly summarizes that effort and focuses on the frequency characteristics of the arc current. After the arc was modeled as a stochastic process, good agreement was obtained between experimental observations and mathematical predictions.
Keywords
Mine-fires; Electrical-hazards; Coal-mining; Electrical-resistance; Power-generation; Author Keywords: DC power systems; dc trolley systems; electrical safety; ground-fault detection; high impedance; mine power systems
CODEN
ITIACR
Publication Date
19990901
Document Type
Journal Article
Fiscal Year
1999
Issue of Publication
5
ISSN
0093-9994
NIOSH Division
PRL
Priority Area
Control Technology & Personal Protective Equipment; Other Occupational Concerns
Source Name
IEEE Transactions on Industrial Applications
State
PA
Page last reviewed: October 28, 2022
Content source: National Institute for Occupational Safety and Health Education and Information Division