The impact of light sources operation on accuracy of the intelligent metering system

This article describes impact of light sources to accuracy the intelligent metering system. The light sources contains the electronics converters and ballasts. These devices generate harmonics to distribution grid and they have impact to accuracy of the measurement. It is describes the verification of the measurement with using a programmable source witch can generate harmonics. There are two approaches how to measure the error: the first one is according to an amplitude law. The second approaches is measurement with using real harmonics witch were measured witch network power analyser.