Assessing the effect of nearly-zero energy buildings on distribution systems by means of quasi-static time series power flow simulations

In the present work, an integrated software able to assess the impact of the nearly-Zero Energy Buildings (nZEBs) over the distribution network is presented. The software creates quasi-static time series for the buildings consumption, generation and storage systems and combines this data with power flow analyses of the grid. The European regulation already imposed the massive use of nZEB in the short-term. To implement these systems, the use of a central coordination scheme at the distribution level is expected. However, nZEBs are being currently installed in a “selfish” manner, trying to minimise the energy exchanged with the grid based on an individual building basis. Therefore, it is necessary the development of a methodology and a tool to evaluate the impact of nZEB in this uncoordinated scenario that will take place in Europe in the coming years.