The de-excitation is the last protection line for the generator when it＇s brokendown. The reliable and quick de-excitation ability dominates the safety level of the generator. In this paper, we use MATLAB software to do simulation analysis for the 600 MW turbo-dynamo unit, concretely comparing and analyzing the de-excitation time, when the system is under the circumstance of linear, nonlinear zinc oxide and silicon carbide resistor configuration, as well as the variety of working conditions. The result ...
