During operation of dry-type air core reactor

the vibration caused by electrodynamic force is one of the main reasons of its interturn short circuit. In order to study further the electrodynamic force distribution of the reactor in the interturn short circuit

the field circuit coupling model of 5-encapsulated reactor is set up by using finite element software so to perform simulation study of the magnetic field

current and electrodynamic force distribution of dry-type air core reactor in normal operation and in the interturn short-circuit condition. The results show that the electrodynamic force of dry-type air core reactor in normal operation shows the trend of squeezing reactor. In case of interturn short circuit

the short-circuit current which phase lags other encapsulated current by 90°and the amplitude is extremely large will flow in the short circuit turn. The electrodynamic force on the short circuit turn will

due to to the influence of short circuit current and distortion electromagnetic field near the short circuit turn

increases rapidly and phase will also change. The study work comprehensively reveals the operation condition of the reactor under interturn short circuit and provides theoretical reference for the design

operation and maintenance of the reactor.