Analysis of the loss and thermal characteristics of a SMES (Superconducting Magnetic Energy Storage) magnet with three practical operating conditions. (15th January 2018)

• Record Type: Journal Article
• Authors: Xu, Ying; Ren, Li; Zhang, Zhongping; Tang, Yuejin; Shi, Jing; Xu, Chen; Li, Jingdong; Pu, Dongsheng; Wang, Zhuang; Liu, Huajun; Chen, Lei
• Is Part Of: Energy. Volume 143(2018)
• Page Start: 372
• Page End: 384
• Publication Date: 2018-01-15
• Subjects: AC loss -- Eddy current -- Joint resistance -- SMES -- Thermal analysis; Power resources -- Periodicals; Power (Mechanics) -- Periodicals; Energy consumption -- Periodicals; 333.7905
• DOI: 10.1016/j.energy.2017.10.087
• Languages: English
• ISSNs: 0360-5442

Abstract

Abstract: The losses of Superconducting Magnetic Energy Storage (SMES) magnet are not neglectable during the power exchange process with the grid. In order to prevent the thermal runaway of a SMES magnet, quantitative analysis of its thermal status is inevitable. In this paper, the loss characteristics of a self-developed 150 kJ SMES magnet are analyzed by means of experiments and simulations, including the loss of the joint resistance, the eddy current loss of the metal cooling structures and the AC loss of the superconducting magnet. A thermal model of the magnet was built to theoretically analyze the relationship between the current and magnet temperature variation. Three kinds of power compensation experiments were carried out to study the thermal characteristics of the SMES magnet. The temperature variation of the magnet under these three operating conditions was simulated. The simulation results and experimental results are compared and analyzed. Highlights: The loss characteristics of a SMES magnet are studied. Three kinds of power compensation experiments are carried out. A thermal model of the magnet is developed. The thermal characteristics of the magnet under three operating conditions are studied.