Based on a fully two-dimensional (2D) electrothermal model, the quench propagation characteristics of short superconducting YBa₂Cu₃O_7-x conductors (AMSC and SuperPower), including the minimum quench energy (MQE), normal zone propagation velocity (NZPV) and hot spot temperature rising rate, are studied by numerical simulations in this paper. It is found that different heater configurations, such as the size of heater and the duration of heat pulse, can result variations of the MQEs and NZPVs. During the quench propagation processes, the NZPV and the normal zone length (L_NZ), when viewed as functions of the hot spot temperature T_peak, i.e., NZPV(T_peak) and L_NZ(T_peak), are not sensitive to the heater configurations for relatively higher operating temperature from 50 K – 70 K. For both AMSC and SuperPower's YBCO conductor, the simulation results show that the hot spot temperature rising rate dT_peak/dt, as a nearly-linear function of T_peak, is almost not affected by heater configurations for a given fixed operating temperature in the regime 30 – 70 K. For a fixed operating temperature in the regime 30 – 50 K, the temperature rising rate of SuperPower's conductor can reach 1000 K/s ~ 6000 K/s as T_peak rising from ~110 K to 300 K, which makes it challenging to experimentally determine the NZPV prior the moment T_peak reaches the temperature limit 300 K. The relations L_NZ(T_peak) obtained for SuperPower's conductor can provide information for the selection of reference voltage employed to determine the NZPV.

基于完全二维（2D）电热模型，短超导YBa ₂ Cu ₃ O _7-x导体（AMSC和SuperPower）的猝灭传播特性，包括最小猝灭能量（MQE），法向区域传播速度（NZPV） ）和热点温度上升率，通过数值模拟进行了研究。发现不同的加热器配置，例如加热器的大小和热脉冲的持续时间，可能会导致MQE和NZPV的变化。在淬火传播过程中，当将NZPV和正常区域长度（L _NZ）作为热点温度T_峰值（即NZPV（T_峰值）的函数时，）和L _NZ（T_峰值），对于50 K – 70 K相对较高的工作温度对加热器配置不敏感。对于AMSC和SuperPower的YBCO导体，仿真结果均显示热点温度上升速率d T_峰值/ dt，作为T _peak的近似线性函数，在给定的固定工作温度为30 – 70 K的情况下，几乎不受加热器配置的影响。对于在30 – 50 K的固定工作温度下，温度的升高T_峰时SuperPower导体的速率可以达到1000 K / s〜6000 K / s从〜110 K上升到300 K，这使得在T_峰值达到温度极限300 K之前在实验上确定NZPV具有挑战性。SuperPower导体获得的关系L _NZ（T _peak）可为选择参考提供信息用于确定NZPV的电压。