Characterization of power quality problems associated with large commercial customers served from large underground distribution network systems

Abstract

The ever increasing utilization of sensitive electronic loads for productivity and energy efficiency improvements make the characterization of power quality supplied by the electric utility a growing concern. This paper describes the results of a project designed to characterize the power quality supplied to various classes of large commercial customers on the network distribution systems in Manhattan. The effects of power quality on the operation of different types of commercial facilities is also discussed. Items addressed include long term voltage regulation, voltage sags due to system faults, and harmonic distortion caused by end user loads.<>