Voltage profile calculation in Distribution Networks under sinusoidal and distorted operation

Due to the growth of Distributed Generation, also in Low Voltage Distribution Networks, in which single-phase generators may be connected to the grid, the voltage calculation it is necessary for each phase of the system. This is an important issue because an non-uniform connection of the single-phase generations on the three phases causes voltage imbalances along the feeders. Moreover, harmonic current injection leads to voltage distortion at the end user side. In this paper a general voltage calculation algorithm is presented. This algorithm allows to calculate the phase voltages in the time-domain also when nonlinear devices are connected to the grid, i.e. under distorted regime. This is very useful for Power Quality issues.