Verifying resonant grounding in distribution systems

Abstract

ISSN 0895-0156/02/$17.00©2002 IEEE F ollowing deregulation within the electricity sector, the quality of electric power supply is a key factor for distribution companies. There has been a considerable increase in the number of users with equipment that is vulnerable to minor interruptions. One way of improving power quality is to use resonant grounding whereby the compensatory effect of the coil minimizes the fault current and allows service to be maintained during a fault. The disadvantage posed here is the difficulty of selective fault detection, which is, in fact, due to the low levels of fault currents. I. Zamora, A.J. Mazón, K.J. Sagastabeitia, O. Picó, and J.R. Saenz are with the University of the Basque Country, Spain. Verifying Resonant Grounding in Distribution Systems