The effects of the transfer switching on the low voltage side of quality control center in FRIENDS

The authors have proposed FRIENDS as a concept of the future electric power system. In order to realize FRIENDS, it is necessary to design the concrete interior structure of quality control centers (QCC) which are newly installed between distribution substation and customers, and develop a method for controlling QCC appropriately. QCC is divided into two parts; high voltage side and low voltage side. Up to now, the authors have designed each part of QCC independently. This paper investigates the performance of QCC in more detail by integrating these two parts. Further, two kinds of novel method for transferring the power to be supplied from one feeder to the other feeder are presented. The effectiveness of the proposed method is ascertained through numerical simulation using the PSCAD/EMTDC.