Specific Energy Concept Applied to Electronic Equipment in Industrial Processes Having Distributed Generation

Abstract

Appliances used in commercial and industrial networks, being very sensitive equipment, are affected by voltage sags. Information about sensitivity is normally presented in time/voltage graphs, where the voltage is of a constant magnitude. This is not the case when distributed generation (DG) is involved, where due to the distributed generator disconnection the voltage magnitude could have one or two sharp changes. The methodology presented here, based upon the I2 t and V2 t change with time, allows the study of such phenomenon. Also the time-voltage and time-current coordination could be studied easily by using the proposed methodology