Bulk distribution of fault currents in a MHD faraday channel

A general impulse excitation technique is developed for exact two-dimensional analyses of electric faults. The exact impulse response function is derived and used to determine analytically the distribution of the fault current in the plasma core for the three specific cases: (1) short circuit of one load, (2) one load rejection, and (3) short circuit between two adjacent electrodes. The obtained fault currents are also presented in three dimensional plots for clarity. The results show that the faults hardly affect the core of the plasma, and that the perturbation currents flow in the thin boundary layers adjacent to the electrodes.