Active management of LV residential networks under high PV penetration

Active network management through residential owned devices, such as battery systems and smart inverters, has been introduced as a promising solution to mitigate voltage issues caused by rooftop solar. Existing decentralized approaches to determining setpoints for these devices, require network visibility and timed coordination to consider the impact of multiple control actions prescribed simultaneously by different controllers. To address this issue, we propose an online decentralized rulebased control approach, which prevents overvoltage/undervoltage by determining dynamic setpoints of PV smart inverters and battery systems, based on online measured connection point voltage. In the proposed method, successive control actions ensure that the voltage gradually converges to the desired region, and coordination between controllers occurs implicitly via the power system. The effectiveness of the proposed method is assessed on a real 30-bus feeder and achieves results that are within 4% of those obtained by a centralised multi-period AC OPF with perfect forecast.