In view of common inter-turn short-circuit faults of reactors

a kind of finite element analysis method for the in ter-turn short-circuit fault of the dry-type air core reactor is proposed in this paper.Firstly

the three-dimensional finite element model of reactor is established.The correctness of the model is verified by calculating the inductance matrix.Then

the external circuit model is established based on the field-path coupling method to simulate the voltage variation of the reactor switching.Finally

the short circuit point is set in the finite element model for the analysis of short-circuit current

magnetic induction and electrodynamic force.It is shown by the study that in case of inter-turn short circuit fault

the shortcircuit current under steady-state voltage can suddenly increase

the magnetic induction intensity near the short-circuit point will become larger and the original symmetry will be destroyed

and the electric power at the short-circuit point will also be it suddenly becomes larger and has a tendency to diverge outward;At the instant of switching of the reactor

the distribution characteristics of short-circuit current

magnetic induction and electrodynamic force are similar to the steady-state process

but the value will increase sharply

which will have a greater impact on the stability of the reactor.