Title :
Circulating Ground Currents
Author :
Brown, William A. ; Kennedy, James M. ; Linkhart, Charles
Author_Institution :
Schneider Electr., Nashville, TN, USA
Abstract :
THe paralleling of uninterruptible power supplies (UPSs) with generators during UPS bypass operations can result in high magnitude circulating ground currents under certain conditions. This article explores the phenomena that cause this system behavior, presents data from an actual documented occurrence, and discusses the methods to reduce or eliminate such circulating currents.
Keywords :
electric generators; uninterruptible power supplies; UPS; generators; high magnitude circulating ground currents; uninterruptible power supplies; Circuit breakers; Current measurement; Generators; Harmonic analysis; Switches; Uninterruptible power systems; Windings;
Journal_Title :
Industry Applications Magazine, IEEE
DOI :
10.1109/MIAS.2010.939637
