The phase shift angle between current and voltage could be used as a quench indictor to avoid a thermal runaway due to this angle is very sensitive to resistance changes in the cable.

• 由于交流超导电缆的电压与电流相位差对电阻的变化非常敏感，所以可以被用作判断失超的预警参数用来避免热溃式失超的发生。