Vector-LDC Setting for Increasing Possible PV Integration Amount into Distribution Network

Abstract

High penetration of PV becomes reality. It is bidirectional power flow of forward power flow and reverse power flow in distribution bank. It is necessary to set up vector-LDC which can exert voltage control effect during reverse power flow in distribution bank and does not unreasonably limit the amount of possible PV integration. However, there have been no reports on such setting methods so far, and evaluation of better vector-LDC setting method that can increase PV integration amount was incomplete. Therefore, the paper leads difference of reverse power flow limit of three representative vector-LDC setting methods, and shows profit or loss of those. It is useful finding to increase PV integration amount under voltage control using vector-LDC. Finally, which vector-LDC setting method is used, it is shown that mixing plurality of pole transformer taps to adapt to forward power flow greatly decreases reverse power flow amount.