Decentralized Communication Based Two-Tier Volt-Var Control Strategy for Large-Scale Centralized Photovoltaic Power Plant

Long-distance power transmission makes a large-scale centralized photovoltaic (PV) power plant (CPPP) integrated into a weak power grid with a low short circuit ratio. Under this condition, small fluctuations in PV power are likely to cause significant fluctuations in system-wide voltage. To overcome this problem, a novel CPPP Volt-Var control (VVC) strategy is proposed. Unlike the conventional VV...