Distribution grid security management with high DG penetration rate: Situation in France and some future trends

The major change in the last decade concerning distribution network is related to the penetration of distributed generation (DG). The current practice in France concerning the connection of DG was to fit the network to the worse case of use of DG to avoid any problem. This approach will reach his limits and many developments will be necessary to optimize the network operation, taking the presence of DG into account. In this document, we introduce some research topics going on in our team as voltage control, management of load and generation, stability analysis of networks with DG, optimization of use of fault indicator, choice of optimal configuration and automatic post fault restoration, distribution system availability assessment. We also stress on the problem of interdependency between power and ICT infrastructures.