Industrial Power Quality Issues

ERG was retained by North American Stainless, Inc., a specialty steel producer, to investigate the existence and impact, if any, of significant power quality issues being alleged by the electric utility serving the mill. These issues resulted from the catastrophic failure of the mill’s static var system (SVC). ERG analyzed the extent to which the mill was producing harmonic voltages and currents with reduced SVC operation, in comparison to allowable limits under applicable U.S. and international standards. In addition, ERG analyzed the potential for problems which could occur at the utility’s nearby generating station, as a result of harmonic distortion reflected into the transmission system. ERG sponsored expert testimony in a complaint proceeding before the Kentucky Public Utilities Commission regarding a proposed special tariff which was filed by the utility for service to the mill.

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