The effects of connecting high amounts of nonlinear appliances to the supply network

The increase in nonlinear appliances in households is largely driven by their affordability. In the case of lighting appliances, it is necessary to use energy-saving light sources. A case study of the possibility of simultaneous connection of large amounts of lighting appliances and other nonlinear appliances used in households is conducted in this paper. A variant of distribution systems in housing estate is selected as an example. Simultaneous operation of a large number of these appliances in certain time periods and thus possible voltage distortion caused by higher order harmonics can be expected. This paper deals with two variants of possible load. In the first case the scenario with probable load is chosen. In the second case it is verified for extreme harmonics influence. Calculations are performed for the radial and the meshed network. In the particular case, calculations are verified by measurement.