Enhancing Distribution Grid Flexibility using Active Power Distribution Node Converter Interfaces

This paper investigates an active power distribution node (APDN) topology’s ability to improve distribution grid flexibility. Network flexibility demands the capability to accommodate dynamic power flow from a variety of power generation sources including higher penetrations of distributed energy resources. The TMMC-APDN interface accomplishes this by utilizing bi-directional ports and embedded energy storage to achieve power-routing and power-buffering functionality and selectively promote the utilization of connected sources and loads. It is important to evaluate the effectiveness of such features on a distribution system, and therefore, evaluate the benefits to system operation and power supply availability. The converter’s functionality will be evaluated using a stability analysis of the controller’s eigenvalues, availability calculations of the defined test system, and experimental testing of the converter modules.