Research on Fault Monitoring and Simulation of Permanent Magnet Generator of Turbogenerator Unit

As an important component of large three-stage turbine-generator set, Permanent Magnet Generator (hereinafter called PMG) plays an important role in the safety and stable of the generator set. By studying the structure and load characteristics of pilot exciter, analyze the main failure modes of the PMG; Through SIMULINK model simulation, study the realization method of PMG fault monitoring criterion. This article introduces the model and simulation data of the ground short-circuit fault in detail, and the simulation verifies the effectiveness of using the zero sequence voltage to identify the ground short-circuit fault