Analysis of distributed generation effect on system losses in distribution network

Distributed generation (DG) connected to the distribution network changes the network power flows, voltage pro files and losses. In this paper, the effects of DG on distribution network active losses are studied in three factors including the DG penetration, location and dispersion levels. The loss sensitivity factor (LSF) is adopted to analyze the effect of location on active losses. In multi-DG cases, a new approach is presented to analyze the effects caused by different DG dispersion levels. It is the combination of enumeration method and Monte-Carlo method. And in order to give a quantitative conclusion, plenty of simulations are tested on the IEEE 33-bus test system. The simulation results provide suggestions and references for DG optimization allocation.