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The National Institute for Occupational Safety and Health (NIOSH)





Mining Publication: Electrical Fault Detection on Downed DC Trolley Lines
Keywords: Circuit breakers Circuit protection Trolley wire
This page is archived for historical purposes and is no longer being maintained or updated. Contact NIOSH Mining if you need an accessible version.
Original creation date: February 1997
Authors: JS Peterson, GP Cole
Conference Paper - February 1997
Download PDF Document (0.33 MB)
NIOSHTIC2 Number: 20021274
SME Preprint 97-38, Society for Mining, Metallurgy, and Exploration, Inc., 1997 Feb:1-5
The National Institute for Occupational Safety and Health (NIOSH), Pittsburgh Research Center (PRC), has conducted research to improve electrical fault detection on coal mine direct current (dc) trolley systems. Present circuit breaker protection systems are current-magnitude-based and cannot discern between normal traffic and high resistance electrical faults. Tests were conducted at cooperating mines to assist in developing a neural-network-based detection algorithm for distinguishing between electrical faults and normal operation. The Fast Fourier Transform of the trolley rectified current signature served as baseline data for the neural network. During field tests, the algorithm performed with greater than 90% accuracy.
Image of publication Electrical Fault Detection on Downed DC Trolley LinesConference Paper - February 1997
Download PDF Document (0.33 MB)
NIOSHTIC2 Number: 20021274
SME Preprint 97-38, Society for Mining, Metallurgy, and Exploration, Inc., 1997 Feb:1-5
See Also
Detection of Downed Trolley Lines Using Arc Signature Analysis
A Passive Means to Detect Hot Trolley Insulators
Protecting Miners from Electrical Arcing Injury
Technology News 439 - Remote Reset Systems for Continuous Mining Machines Used In Extended Cuts
Technology News 456 - A Fault Detection Neural Network for DC Trolley System Protection
Technology News 474 - A Passive Means to Detect Hot Trolley Insulators
Page last reviewed: September 21, 2012
Page last updated: September 21, 2012
Content source: National Institute for Occupational Safety and Health, Mining Program
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