Estimation of end user voltage quality including background distortion

Often power electronic converters are used to increase the energy efficiency of electrical loads, even though these power electronic devices may create a distortion of the grid voltage, inversely affecting the energy efficiency of other electrical components integrated in the grid. In this paper simulations are performed to analyse the distortion generated by loads and a measurement campaign has been set up to estimate the background distortion of the supply voltage. The background distortion is integrated in the simulation model leading to correct estimation of the end user voltage quality. Simulations are evaluated resulting in summation rules to estimate the voltage distortion at the end user.