Amplification and Compensation Effects with regard to Harmonics due to Integration of Electric Vehicles into an Existing Industrial Grid

Abstract:
Reducing CO2 emissions is a key challenge of the 21st century. Climate-friendly means of transport such as electric vehicles play an important role. The expansion of charging infrastructure is necessary to be able to charge electric vehicles. Employee parking lots are also seeing an increase in the number of charging stations, many of which are powered by the industrial grid. Electric vehicles are a new source of harmonics in the industrial grid, which is often already harmonically loaded itself. Previous studies have already shown that electric vehicles generate harmonics, especially in the higher order range. Individual harmonic orders can be degraded by battery electric vehicles (BEVs) and improved to some extent. Against this background, the impact of BEVs on individual harmonic orders is investigated in more detail. The investi-gation is carried out as a simulation in the grid calculation program DIgSILENT "PowerFactory". A given industrial grid with measurement data from the automotive industry is combined with BEVs charging in an employee parking lot. The impact of the BEVs on the individual harmonic orders is analyzed depending on different numbers of simultaneously charging BEVs and three BEV models. Depending on these parameters, the amplification and compensation effects of the voltage harmonics of the 2nd to 200th harmonic order in the industrial grid are investigated.