The Research On Rotor Winding Inter Turn Short-Circuit Of Turbine Generator Based On The Reluctance Network Model

The fault causes of generator rotor inter turn short circuit has been analyzed deeply, and the shortage of the traditional methods and the significance of researching the new study method are pointed out. The method that uses the reluctance network model to imitate the generator rotor inter turn short circuit fault has been put forward. According to the alike between magnetic circuit and electric circuit, the reluctance network model of turbine generator has been set up. The differential equations were set up based on that the variable was the stator winding branch current. The variation of rotor magnetic potential has been analyzed detailed when the different places of rotor winding happened the different deep inter turn short circuit fault. At the same time, the solution to uniform air-gap permeance was analyzed. Taking stator winding branch circuit as criterion, using the reluctance network model and MATLAB software simulated different rotor inter turn short circuit on different places. By means of the generator rotor inter turn short circuit experiment of the machine experimental laboratory units. The concerned theory above is verified concretely. The result coincides with the theory. The validity of the reluctance network model was declared.