Title :
Protecting large machines from arcing faults
Author_Institution :
Beckwith Electr. Co., Inc., Largo, FL, USA
Abstract :
This paper presents a new protection method to detect arcing faults along the entire winding and up to the terminals of the step-up transformer. This protection can trip the unit before extensive damage occurs. This paper also shows the protection engineer how to properly identify the faulted phase. Faulted phase identification is important since it will greatly aid locating the source of an intermittent arcing fault.
Keywords :
arcs (electric); fault location; machine protection; machine windings; power transformers; synchronous machines; faulted phase identification; intermittent arcing fault location; large synchronous machine protection; step-up transformer; winding; Delay effects; Fault location; Generators; Grounding; Resistors; Stator windings;
Conference_Titel :
Protective Relay Engineers, 2011 64th Annual Conference for
Conference_Location :
College Station, TX
Print_ISBN :
978-1-4577-0494-9
DOI :
10.1109/CPRE.2011.6035626
