In this paper

the reason causing the reactor abnormal is the accident due to impurity or foreign matter

which is checked by the authors with reference of abnormal treatment example of 750 kV shunt reactor and with adoption of site test as well as disassembly at the factory. The conventional check and test result of the reactor are analyzed and compared with combination of historical operation data of the equipment. The judgment method and conclusion is given with combination simulation calculation of the internal insulation margin of the reactor

the elimination method and process for the abnormality of the reactor is proposed and specific measures on status monitoring of strengthening grid operation reactor is proposed.