Study on Transformer Fault for 220kV Substation

Transformer short-circuit accident caused by external short-circuit fault is analyzed and the basic parameters and process structure of transformer are introduced. The process and treatment of fault are expounded. The fault type is simulated and the fault degree is calculated quantitatively. By analyzing the results of fault recording, protection action, electrical test and gas chromatography test, the basic cause and fault location of transformer fault are determined and the corresponding preventive measures are put forward.