Journal article
Test results of full-scale HTS cable models and plans for a 36 kV, 2 kArms utility demonstration
Cable systems using high-temperature superconducting (HTS) tapes are nearing technical feasibility. Several large-scale demonstrations are under way. This article summarizes the advancements and status of a development project aimed at demonstrating a 36 kV, 2 kA RMS AC cable system through installing a 30 m long full-scale functional model in a power utility substation.
The HTS cable line is designed to link two medium-voltage transformer stations in an urban environment. The expected benefits of such a system include reduced energy loss, ease of installation, increased power rating in a small cross section, and insensitivity to the surrounding soil conditions. Results will be presented from tests on several 2 kA-class AC conductors.
Electrical losses below 1 W/m at 2 kArms have been obtained in these cable conductors. The cable system consists of terminations, three HTS cables with conventional room-temperature dielectric and stress cones, and a closed-loop circulating cooling system maintaining the temperature between 74 and 84 K.
Critical issues before the commercialization of this technology is the improvement of the thermal insulation, the reliability and maintainability of the cooling system, and the reduction of materials costs.
Language: | English |
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Publisher: | IEEE |
Year: | 2001 |
Pages: | 2473-2476 |
ISSN: | 15582515 , 10518223 and 23787074 |
Types: | Journal article |
DOI: | 10.1109/77.920364 |
2 kA 30 m 36 kV 74 to 84 K Conductors Cooling HTSC power cables High temperature superconductors Large-scale systems Maintenance Power system modeling Superconducting cables Superconducting films Testing Thermal stresses closed-loop circulating cooling commercialization cooling cooling system energy loss high-temperature superconducting tapes high-temperature superconductors installation losses maintainability medium-voltage transformer stations power cable testing power rating power utility substation reliability superconducting cables superconducting tapes technical feasibility thermal insulation transformer substations