Automated Testing Of Solid-State Watthour Meters In The Presence Of Harmonic Distortion

Harmonic distortion of load voltages and currents have the potential to create registration errors in revenue metering equipment. Electric utilities have developed standardized testing practices for evaluating the performsnce of revenue meters at the fundamental frequency. However there is no standudized procedlue for testing the accuracy of such metcrs in the presence of harmonic distortion. This paper describes the development of a measurement facility for evaluating solid-state watthour meters under a variety of operating conditions. The p'upose of this facility is to evaluate various lab standards for characterizing the performance of revenue meters.