Impact of different DG location on chargeability and voltage level of distribution networks

Abstract

The conventional structure of distribution grids has been changing due to the inclusion of distributed generation (DG) near to consumption centers. This inclusion could have several impacts on chargeability and voltage levels of the distribution systems. In this paper positive and negative impacts of DG penetration are characterized in terms of sizing and location of the DG. Three scenarios of DG sources located at head-feeder, mid-feeder and end-feeder busbars and several penetration levels of DG power are simulated in a local MV network. Indexes for lines chargeability and voltage levels are calculated to assess the impact of different scenarios of DG. We find that in this case voltage level variations are not significantly different for the all simulated scenarios of DG. On the other hand, we find that the magnitude and direction of the power flow affect the chargeability index and downstream locations of DG have stronger impact on this index.