Aiming at the magnetic field change due to the inter-turn short-circuit of dry-type air core reactor

the inter-turn short circuit magnetic field detection scheme of dry-type air core reactor based on reluctance effect is analyzed through the combination of theoretical research

modeling and simulation as well as prototype test. In the simulation process

the finite element model of inter-turn short circuit of reactor is set up

and the calculation of magnetic field change at different positions and different fault degrees is completed. Based on the simulation results

the measurement position of the magnetic field is determined

and the magnetic field measurement test of the inter-turn short circuit of the reactor is performed by using the reluctance effect sensor. The test results show that the reluctance effect sensor in application does not affect the normal operation of reactor because it is not in contact with reactor in the measurement process; Secondly

the reluctance effect sensor can effectively reflect the magnetic field change in case of fault of the reactor

and the feasibility of the reluctance effect sensor to measure the inter -turn short circuit magnetic field of dry-type air core reactor is verified.