Aiming to the short circuit test system

this paper discussed the generation mechanism of the overvoltage during the breaking progress for the high voltage current limiting fuse and set up a dynamic simulation model to simulate the breaking progress of the fuse based on MATLAB.A numerical calculation model was established for electromagnetic transient progress.A great deal of calculations of the overvoltage were carried out by using Callahan algorithm.The results were almost the same as the fact.It illuminates that the two methods are both correct.The breaking voltage of the high voltage current limiting fuse in short circuit test can be simulated using the two methods.They can also be used to calculate the overvoltage of the other nonlinear circuit and electromagnetism transient process.