Hanyu Liang;Jie Sheng;Xuan Zhou;Ran Li;Zhijian Jin
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Operating Reliability of In-Grid HTS Power Cables Based on Electromagnetic–Thermal–Hydraulic Analysis
High-temperature superconducting (HTS) power cables with low loss and large capacity are playing an indispensable role in power transmission. However, the reliability analysis of in-grid HTS power cables is hindered by the scarcity of failure data from demonstration projects. This paper investigates the electromagnetic–thermal behavior of in-grid HTS power cables under two failure modes: short-circuit fault and cooling system failure. To improve the reliability of the HTS power cable, this paper proposes a current-dependent overheating protection strategy and a reclosure strategy based on the maximum self-recovery temperature. The optimized strategies increase the operating probability of the normal state for the HTS power cable from 99.27% to 99.49%, demonstrating that HTS power cables can achieve high reliability in grids.
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The scope of the Society embraces planning, research, development, design, application, construction, installation and operation of apparatus, equipment, structures, materials and systems for the safe, reliable and economic generation, transmission, distribution, conversion, measurement and control of electric energy. It includes the developing of engineering standards, the providing of information and instruction to the public and to legislators, as well as technical scientific, literary, educational and other activities that contribute to the electric power discipline or utilize the techniques or products within this discipline.
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