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Material Evaluation: Self Damping Wire Sd/Acsr Conductor Failures, Daniel F. Weyer
Material Evaluation: Self Damping Wire Sd/Acsr Conductor Failures, Daniel F. Weyer
Department of Mechanical and Materials Engineering: Dissertations, Theses, and Student Research
Following numerous 954 ACSR SD Wire failures from 2010 to 2012, Nebraska Public Power District (NPPD) implemented an inspection program to determine the extent of condition for this type of widely used conductor. NPPD transmission system includes over 2000 miles of this particular conductor.
Transmission line splices are installed every 15-20 spans, with failures being located in a span containing a splice. NPPD worked with Kinectrics to complete electromagnetic field inspections for three days in 2013, with retesting performed in 2015. Throughout this inspection of 54 spans of conductor, 36 were found to have deterioration and corrosion.
Over 80% of …