YBCO超导体由于其优异的高场性能，被看作是可在液氮温区实现强电应用的超导材料。然而在实际应用中仍存在以下问题：①YBCO高温超导带材在热、力作用下异性材料交界面热传导机理不明；②超导带材的绝缘层通常采用热的不良导体，失超后能量难以耗散，严重威胁设备的安全稳定运行。本课题首先提出一种基于磁显微法的可定位温度动态分布测量方法，从宏观上实验研究超导带材的表面温度及电流密度动态分布变化规律；基于非平衡态分子动力学方法，分析微观结构变化对于异性材料交界面热导的影响规律，揭示其交界面传热机理；据此建立超导线圈3D/2D混合维度有限元模型，分析失超后热应力作用下各向异性热传导行为及其关键影响因素，阐释暂态情况下超导线圈复杂多层结构热传导机制；基于泛克里金法，研究适用于超导线圈的全局优化算法，并建立超导线圈能量耗散优化模型。研究成果可为超导带材制备以及超导电力设备的失超保护和结构优化提供理论依据。

YBCO superconductors are considered as superconducting materials for high-voltage applications in the temperature range of liquid nitrogen due to their excellent high-field properties. However, there are problems to be solved in the practical applications: The thermal conduction mechanism at the anisotropic materials interface of YBCO high-temperature superconducting tapes under the action of heat and force is unknown; Insulating layers materials of superconducting tapes are bad conductors of heat. It is difficult to dissipate energy after quench and heat production of superconductors which seriously threatens the safe and stable operation of equipment. Firstly, this topic proposes magnetic microscopic method for measuring the positional temperature dynamic distribution, and the surface temperature and surface current density distribution characteristics of superconducting tapes are studied through experiments on a macro scale. The effect of microstructural changes on thermal conductivity at interface of anisotropic materials by non-equilibrium molecular dynamics method, and heat transfer mechanism are revealed. 3D/2D mixed dimension models of superconducting coils are structured, the anisotropic heat conduction behaviors and their key influencing factors under thermal stress after quenching are analyzed, and the principles of thermal conduction under transient states of superconducting coils are explained. Based on the universal kriging method, the global optimization algorithm are studied and the energy dissipation optimization design models of the superconducting coils are established. The research results provide theoretical basis for preparation of superconducting coils, quench protection and structural optimization designs of superconducting power equipment.