The dry-type air core reactor is an inductor coil

is a key component in the power system and its own temperature rise and the temperature rise of the supporting fittings are essential for safe operation.With the increase of the reactor capacity

the temperature rise measurement of the reactor and simulation technology is more and more important. In this paper

the study is made from such aspects as the structure of reactor

magnetic field and temperature field. The simulation calculation method and result of the temperature rise of the reactor are introduced. The highest temperature rise point of the reactor coil and the influence of material of the support fittings on the temperature are found from the theoretical calculation. It is concluded throughout simulation calculation of reactor that at steady operation

the temperature distributionofthereactorwindingishighontopandlowonthebottomandthehotspotlocationisontheupperendof theintermediatelayerwhichisenclosed.Inthestrongmagneticfield

the heating of aluminum alloy is higher than that of stainless steel and the latter is recommended to be used as the support material of the reactor.