Application of reactive compensation equipment in industrial systems under aspects of harmonics and switching transients: A study of real case

It is well known that the presence of harmonics in electrical power grid, almost of them due to the use of electronic loads at residential, commercial and industrial plants, affects the behavior of the voltage and current, therefore harming the life and functioning of equipment. In addition, the strong sensitivity of these electronic loads the sudden voltage variations generated during the transient operation of reactive compensation equipment can lead to the shutdown or the burning of these sensitive loads. This paper presents the effects and problems solutions related to harmonics and switching transient on application of equipment for power factor correction in two industrial systems where the loads are driven by frequency inverters.