Optimization of the Operating Point of Multi-Reactive Power Compensation Equipment Considering Facility Characteristics

Increased integration of renewable energy sources, which are typically inverter-based, has heightened concerns about voltage stability in power systems. This paper presents an optimization strategy for the operating points of reactive power compensation equipment, specifically Flexible AC Transmission Systems (FACTS) and fixed shunt capacitors, to enhance voltage stability. The proposed method employs QV sensitivity to linearize the relationship between reactive power and voltage, formulating the optimization problem as a Mixed Integer Quadratic Programming (MIQP) problem. By leveraging the unique characteristics of FACTS and shunt devices, the method aims to minimize voltage deviations and reactive power imbalance without extensive power flow calculations. Simulation results on the IEEE 39-bus system demonstrate the effectiveness of the proposed strategy in maintaining voltage stability and optimizing the reactive power response under various loading conditions.