Calculation and analysis of the additional loss and temperature rise in controllable reactor

This paper presents a method of solving the problems of additional loss and overheating based on the finite element theory by adopting the method of A, φ-A on a controllable reactor of 1000kv-200MVAR. The finite element analysis software ANSOFT is used to establish the 3D model, through a series of accurate calculation and analysis of the controllable reactor on three-dimensional (3D) leakage magnetic field, the eddy current distribution and loss of the structures with or without electromagnetic shield in the controllable reactor can be obtained. Besides, a method on how to reduce the eddy current loss is given in this paper based on calculation result. The temperature distribution is obtained by adopting magnetic-thermal coupling analysis based on the heat transfer theory. By analyzing leakage magnetic field of the controllable reactor, the method is used to reduce eddy current loss and prevent from overheating has been given in this paper, which has important significance to the controllable reactor of energy saving, safe and economic operation.