REBCO-coated conductor is widely used in various HTS power applications. The HTS coils for power applications are generally impregnated with epoxy resin to enhance their mechanical stability, and the coil conductors would be subjected to transverse compressive loading in these applications. Although the effect of various operating conditions on the quench characteristics of REBCO-coated conductor have been investigated, the effects of compressive stress on quench characteristics of epoxy-impregnated REBCO-coated conductor has rarely been reported. This study examined the effects of transverse compressive loading on the minimum quench energy (MQE) and normal zone propagation velocities (NZPV) of epoxy-impregnated REBCO-coated conductor. The critical current of the conductor shows little degradation when transverse compressive stress is applied up to 80 MPa. Under the same compressive stress, the MQE decreases but the NZPV increases with the transport current. For fixed transport current, compressive stress increases the thermal contact conductance between conductor and epoxy which allows the heater energy of the conductor dissipating faster towards the surrounding epoxy, resulting in the increase of MQE and decrease of NZPV when increasing transverse compressive stress. The results indicate that higher compressive stress is helpful to decrease the quench damage of the conductor.

REBCO涂层导体广泛用于各种HTS电源应用中。用于电力应用的高温超导线圈通常用环氧树脂浸渍以增强其机械稳定性，并且在这些应用中，线圈导体将承受横向压缩载荷。尽管已经研究了各种操作条件对REBCO涂层导体的淬火特性的影响，但很少报道压应力对环氧浸渍REBCO涂层导体的淬火特性的影响。这项研究检查了横向压缩载荷对环氧浸渍REBCO涂层导体的最小淬火能（MQE）和法向区域传播速度（NZPV）的影响。当施加最高80 MPa的横向压缩应力时，导体的临界电流几乎没有下降。在相同的压缩应力下，MQE随运输电流的增加而降低，而NZPV随运输电流的增加而增加。对于固定的传输电流，压应力会增加导体与环氧树脂之间的热接触电导率，从而使导体的加热器能量更快地向周围的环氧树脂消散，从而导致MQE的增加和NZPV的降低（横向应力的增加）。结果表明，较高的压应力有助于减小导体的淬火损伤。压应力增加了导体与环氧树脂之间的热接触电导率，使导体的加热器能量更快地向周围的环氧树脂消散，从而导致当横向压缩应力增大时，MQE增大，NZPV减小。结果表明，较高的压应力有助于减小导体的淬火损伤。压应力增加了导体与环氧树脂之间的热接触电导率，使导体的加热器能量更快地向周围的环氧树脂消散，从而导致当横向压缩应力增大时，MQE增大，NZPV减小。结果表明，较高的压应力有助于减小导体的淬火损伤。