A New Methodological Approach to Quality Assurance of Energy Meters Under Non-Sinusoidal Conditions

In this paper the authors propose a methodology to guide verification of energy meters under sinusoidal and non sinusoidal conditions. At first, it is presented a brief review about definitions of the quantities that should be measured or monitored for revenue purposes and their relationship with electrical quantities that are recognized to be important in terms of metering accuracy. Then, a design of experiment that allows testing meters under a combination of disturbances showing positive and negative correlation is described. Finally, a hardware and software system to perform verification procedures in complex situation is presented with some preliminary analyses