Longitudinal field magnet quenching detection plasma interference dynamic compensation method and system

The invention discloses a plasma interference dynamic compensation method and system for quenching detection of a longitudinal field magnet, and the method comprises the steps: carrying out the offline calculation of fixed coupling inductance between plasma and a longitudinal field conductor according to a coupling mechanism between the polar magnetic flux of the plasma and the longitudinal field conductor; acquiring a longitudinal field current, a plasma current and a polar specific pressure, and inverting a dynamic coupling inductance between the plasma and the longitudinal field coil in real time according to a coupling mechanism between the plasma circumferential magnetic flux and the longitudinal field coil; and a corresponding dynamic compensation coefficient is generated by combining the dynamic coupling inductance and the fixed coupling inductance between the plasma and the longitudinal field magnet, so that dynamic accurate compensation for plasma coupling interference in quenching detection of the T