Fuzzy-Based Reactive Power Control for Smart PV Inverters in LV Distribution Systems

Future society entails new paradigms in how the world will work; new ideas as Smart Grid, Smart Cities, Smart Homes, and their interactions have been established and studied. With the inclusion of Information and Communication Technology (ICT) components into the low-voltage (LV) distribution grid, some measurement signals from smart meters are available for distribution network control with high penetration of photovoltaic systems (PV). This paper takes a local voltage-control strategy for smart LV distribution networks, by using a fuzzy based methodology using local information collected from smart meters as status information source of the grid. Comparative studies are presented for a smart home LV distribution system to validate the method, showing the robustness of proposed method compared with the traditional local approaches. To illustrate the applicability of the proposed method, a real-time digital simulator for smart distribution power grids with a the developed voltage-control system are used. The results show the proposed method can simultaneously mitigate the PV reactive power injection, as well as minimize the voltage rise and power losses. (C) 2017, IFAC (International Federation of Automatic Control) Hosting by Elsevier Ltd. All rights reserved.