Akademik Veri Yönetim Sistemi
2025 16th International Conference on Electrical and Electronics Engineering, ELECO 2025, İstanbul, Türkiye, 27 - 29 Kasım 2025, (Tam Metin Bildiri)
This paper addresses overvoltage issues in low-voltage (LV) AC distribution networks using the volt-VAr (Q(V)) control function of smart inverters (SIs) connected to photovoltaic (PV) systems and battery energy storage systems (BESSs). Two optimization frameworks are proposed: (i) a rule-based approach and (ii) an optimal power flow (OPF)-based approach for selecting the most effective droop slope parameter. The rule-based method performs successive power flow simulations to identify the slope minimizing voltage deviations, while the OPF-based method formulates the problem as a mixed-integer linear program (MILP) using linearized power flow equations and a piecewise Q(V) droop representation. Both methods are implemented and validated on a real LV microgrid testbed at the Ricerca sul Sistema Energetico (RSE) facility, modeled in OpenDSS and verified against real measurements under dynamic load variations. Results show that both approaches achieve effective voltage control, with the OPF-based method providing superior regulation and computational efficiency.