Detection of Local Temperature Change on HTS Cables via Time-Frequency Domain Reflectometry

29th International Symposium on Superconductivity

Bang, Su Sik^1 ; Lee, Geon Seok^1 ; Kwon, Gu-Young^1 ; Lee, Yeong Ho^1 ; Ji, Gyeong Hwan^1 ; Sohn, Songho^2 ; Park, Kijun^2 ; Shin, Yong-June^1

School of Electrical and Electronic Engineering, Yonsei University, Seoul

03722, Korea, Republic of^1

Korea Electric Power Corporation Research Insitute, Daejeon

34056, Korea, Republic of^2

关键词: Comparative analysis;    High temperature superconducting cables;    Local temperature;    Non-destructive diagnostic;    Power grids;    Simulation model;    Time frequency domain reflectometry;    Transmission and distribution;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/871/1/012100/pdf
DOI  :  10.1088/1742-6596/871/1/012100

来源: IOP

【 摘 要 】

High temperature superconducting (HTS) cables are drawing attention as transmission and distribution cables in future grid, and related researches on HTS cables have been conducted actively. As HTS cables have come to the demonstration stage, failures of cooling systems inducing quench phenomenon of the HTS cables have become significant. Several diagnosis of the HTS cables have been developed but there are still some limitations of the experimental setup. In this paper, a non-destructive diagnostic technique for the detection of the local temperature change point is proposed. Also, a simulation model of HTS cables with a local temperature change point is suggested to verify the proposed diagnosis. The performance of the diagnosis is checked by comparative analysis between the proposed simulation results and experiment results of a real-world HTS cable. It is expected that the suggested simulation model and diagnosis will contribute to the commercialization of HTS cables in the power grid.