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.
关键词
干式空心电抗器/匝间短路/磁阻效应/磁场
Key words
dry-type air-core reactor/inter-turn short circuit/reluctance effect/magnetic field
维普
万方数据