AUTHOR=Tang Shouquan , Li Minhong , Xie Hong , Wang Zhenzi , Yu Peng , Li Zhonghang , Wang Zhe , Chen Tengbiao , Wang Bangzhu TITLE=Development and demonstration of concentric-type HTS power cable for distribution grid in Shenzhen urban JOURNAL=Frontiers in Energy Efficiency VOLUME=1 YEAR=2023 URL=https://www.frontiersin.org/journals/energy-efficiency/articles/10.3389/fenef.2023.1160372 DOI=10.3389/fenef.2023.1160372 ISSN=2813-6799 ABSTRACT=

High-temperature superconducting (HTS) cable can transmit massive power with little dissipation in a limited corridor, which is an attractive solution for future power transmission. Shenzhen Power Supply energized a 400 m/10 kV/2.5 kA concentric HTS cable system on 28 September 2021 to power Ping’an Financial Centre, a Shenzhen’s landmark building, which was the debut of concentric HTS cable made of YBCO in the urban area of a megacity. For more than 1 year, the HTS cable system has been operating well and will continue to operate for a long time. This paper systematically reviews the system specification, cable and its accessories design, cryogenic cooling system design, type and exploratory test, project construction, pre-commissioning test, and operation of the demonstration cable system. Based on our R&D practice, we identify that cost, long-term reliability, and operational simplicity are the main hinders factors that need to be addressed to advance the large-scale application and we propose a set of solution ideas meanwhile.