空芯螺管型超导储能磁体的优化设计方法

Optimization on solenoid superconducting magnet for SMES

微、小型超导储能系统由于运行操作灵活性和制造工艺简单而在电力系统中具有广泛的应用前景。作为超导储能系统的关键部件 ,储能超导磁体的优化设计 ,不仅应从技术上保证超导储能系统运行的安全可靠性 ,而且应能最大限度地降低制造成本。本文针对超导储能磁体系统的基本组成单元———螺管型超导磁体 ,从磁体绕组的基本参数如绕组厚度、径高比的变化出发 ,分析了螺管型储能超导磁体的储能效率 ,提出了螺管型超导储能磁体的优化设计方法。

This paper describes an optimization method for designing solenoid SMES magnet. Analysis on the magnet winding with NbTi wire reveals that the shape factors such as winding thickness, mean radius and ratio of mean radius to height have a strong influence on the magnetic energy storage. Results show that, for a given amount of superconducting material, the thinner the winding thickness and the shorter the winding length, the bigger the energy storage. Besides, hoop stresses developed by the huge electromagnetic force may be an additional factor affecting energy storage for big size magnet with a thin winding thickness.