NDLI: Design, fabrication, and operation of the cryogenic system for a 220kV/300MVA saturated iron-core superconducting fault current limiter

Content Provider	IEEE Xplore Digital Library
Author	Hui Hong Guo Jun Niu Ji Bin Cui Bo Tian Qiang Li Li Zhong Wang Ying Xin Bin Su Zhi Hui Zhang Kai Zhang
Copyright Year	2013
Description	Author affiliation: Innopower Supercond. Cable Co., Ltd., Beijing, China (Hui Hong; Guo Jun Niu; Ji Bin Cui; Bo Tian; Qiang Li; Li Zhong Wang; Ying Xin) \|\| Beijing Electr. Res. Inst. of Econ. & Technologys, Beijing, China (Bin Su; Zhi Hui Zhang; Kai Zhang)
Abstract	High reliability is one of the key requirements for a power grid device. The reliability of a superconducting fault current limiter (SFCL) largely depends on the reliability of its cryogenic system. An open cryogenic system was designed and fabricated for a 220 kV / 300 MVA saturated iron-core SFCL, which composed of a dewar, heat insulation pipelines, a liquid nitrogen tank, a control circuit, and a vacuum pump. In its configuration, a HTS dc bias coil is immersed with liquid nitrogen inside the dewar. The control circuit constantly monitors the liquid nitrogen level and controls the supply of liquid nitrogen in accordance with the liquid nitrogen level. Nitrogen vapor is directly released into the environment. The SFCL including cryogenic system was installed in Shigezhuang substation of Tianjin, China. There are three operation modes for the cryogenic system. The first is the ac coil and the HTS coil being loaded with current. The second is the HTS coil being loaded with current while no current in the ac coil. The last mode is no current loading in both the coils. Operation data of the cryogenic system are analyzed to compare thermal load, pressure, and supply cycle of liquid nitrogen in the three operation modes.
Sponsorship	IEEE Beijing Sect.
Starting Page	508
Ending Page	509
File Size	272454
Page Count	2
File Format	PDF
e-ISBN	9781479900701
DOI	10.1109/ASEMD.2013.6780832
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2013-10-25
Publisher Place	China
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Coils Fabrication High-temperature superconductors Liquids Substations Superconducting fault limiter Cryogenics Liquid nitrogen cooling Cryogenic system Heat loss Nitrogen
Content Type	Text
Resource Type	Article

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