Reactive Voltage Control in Photovoltaic Power Stations Considering Source-Load Uncertainty

This study presents an optimization strategy for mitigating voltage fluctuations and network losses in the grid due to the integration of large-scale photovoltaic (PV) stations. It introduces a reactive power management framework that accommodates the uncertainties of generation and load. By forecasting the PV station's active power and the regional grid's load demand, the strategy sets a voltage control objective at the PV station's grid integration point. A dual-layer optimization model for reactive power and voltage regulation is proposed, guiding the adjustment of control variables such as inverters, Static Var Generators (SVG), On-Load Tap Changers (OLTC), and Capacitor Banks (CBs). Simulation results demonstrate the effectiveness of this approach in maintaining voltage stability and reducing network losses.