The value of loss and the temperature distribution of UHV shunt reactor are important for structural design of shunt reactor. Because the discontinuous structure of core limp leads that the main magnetic flux reduces and the leakage flux increases as well as the loss increases

which causes local overheat problem of shunt reactor.The paper builds the simple shunt reactor 3D model and analyzes the magnetic field to get the value of the total loss. At the same time this paper builds the 3D model of the reactor cooling device and couples the loss as thermal load to analyze the inner temperature and fluid field and hotspot. In this article

the verification results are basically identical with the calculated value

which verifies the correctness and effectiveness of the proposed method.