Research on the Reactive Optimization Model and Its Algorithm with Flexible Objectives Containing Voltage-Infeasible Nodes

The paper conducts a systematic study of the infeasibility problem. Based on wattles voltage in substation, the paper divides the weak zone and non-weak zone, sets different control targets for different zones, and proposes the reactive optimization model with flexible objectives containing voltage-infeasible nodes which can automatically identify the weak zone. The parallel co-evolutionary algorithm with population sequential updating strategy is used to solve the model. Finally, the effectiveness of model is verified with the 63-node system as an example, and the model reduces the active power loss and the degree of voltage deviation for voltage-infeasible nodes.