A Coordinated Active and Reactive Power Dynamic Optimization Method for Distribution Networks Based on Linearized Voltage Sensitivity

Rapid growth in renewable energy installed capacity poses new challenges to the traditional distribution network control. The high penetration of distributed photovoltaic (PV) systems introduces issues such as voltage violations and reverse power flow, which are difficult to manage using conventional control methods. Against this backdrop, feeder load has emerged as a promising resource for active power regulation due to its aggregative properties.This paper proposes a coordinated active and reactive power optimization method based on voltage sensitivity, incorporating feeder load power control into the distribution network optimization framework. By leveraging the ZBus model and a fixed-point iteration method, the approach achieves sensitivity linearization and rapid power flow calculation. The proposed method enhances control efficiency and renewable energy utilization, while ensuring the safety, power quality, and economic operation of the distribution network. Furthermore, an active-reactive power optimization model is developed and solved, providing technical support for the optimization of modern power systems.