Automatic voltage and reactive power control in distribution systems: Dynamic coupling analysis

The paper focuses on the dynamic response of a secondary voltage control scheme for distribution networks. The proposed control is based on a hierarchical architecture and is similar to the hierarchical voltage control implemented in some countries in high voltage transmission systems. The objective of the paper is to show a possible undesired dynamic coupling of different reactive power control loops of network generators. The effect of an algebraic decoupling matrix of the secondary voltage control as well as its effects simulated on a real-world case study are also duly discussed.