Impact of Distributed Generation over Power Losses on Distribution System

This paper is an intent to quantify the impact of distributed generation (DG) over active and reactive power losses on distribution system. The novelty of this paper is the use of new a relevant index: DG penetration level, DG dispersion and DG technologies. Several simulations over a simple distribution system were done. Implications about location and size of DG units were considered using penetration (all scenarios possible) and dispersion levels (including utopian scenarios). Reactive and voltage support capacity was considered, including relative consumption as inductions generators (IG). Simulations over a test distribution system (11.47 kV) representative of Kumamoto area, Japan, were developed using a MatlabTM program coded including specific technologies models. Minimum losses profiles was obtained with better reactive capacity support Keywords; power losses; distributed generation, distribution system.