Case study of distrubution-unified power flow controller (D-UPFC) in the clustered PV system

This paper shows the case study of D-UPFC in the clustered PV system. D-UPFC mainly controls distribution voltage and thus, it is installed in the low-voltage distribution system connects with clustered PV system. Proposed D-UPFC topology is shown and compared with existing topology. The proposed topology can decrease the transformer capacity compared with existing topology. In the case study, voltage control and dynamic characteristic of D-UPFC are analyzed. Forward power flow, reverse power flow, and load power factor change conditions are simulated using ATP-EMTP tool.