TAKAHASHI Ryu, a second-year student of the master’s course in the Network Design Program, the Graduate School of Advanced Mathematical Sciences (FUKUYAMA Yoshikazu Laboratory), received the Excellent Paper Presentation Award A at the 2025 IEEJ Power and Energy Conference held at the Senbaru Campus of the University of the Ryukyus from September 17 to 19, 2025. This award is given annually to young researchers and engineers under the age of 35 who have presented outstanding papers.
TAKAHASHI, FUKUYAMA, YOSHIDA, OI, JINTSUGAWA, FUJIMOTO:
“Connection Phase Estimation of Pole Mounted Distribution Transformers by Majority Voting of High-Quality Solutions Using Only Selected Stages,” Paper I-3, the IEEJ Power and Energy Conference, September 2024
In power distribution systems in Japan, a voltage of 6,600 V on high-voltage distribution lines is lowered to 100 V or 200 V on low-voltage distribution lines using pole-mounted transformers to distribute electric power to users. At this time, two of the three phases of the high-voltage distribution line are selected as connection phases and connected to the pole-mounted transformer to lower the voltage. However, because, for example, many pole-mounted transformers are installed and the connection phases are determined at the installation site, it is not possible for electric power companies to completely manage the connection phases of pole-mounted transformers.
In this paper, they propose a connection phase estimation of pole-mounted distribution transformers by majority voting of high-quality solutions using only selected stages. The effectiveness of the proposed method was verified by comparison with the conventional method using a distribution system model.
