High-T_c superconducting power cable development

We have been developing a high-T_c superconducting power cable in order to cope with the continuous increase in power demand. Summarized herein are the results of our activities. Wire development and element development, including 50 m conductor developments and 30 m single cable prototype tests, have been conducted. Based on these researches, we have begun a new project of developing a 100 m, 66 kV/100 MVA three-phase power cable prototype. So far, we have designed the cable system, and have also estimated loss characteristics of the cable. We hope to certify the manufacturing ability and practicability, and also to extract necessary subjects for developing a field level power cable.