Abstract

The power unit is an important component of the main circuit generators excitation system, when the power unit of the main circuit failure, failure can be found fast, accurate, timely troubleshooting and stable operation of the excitation system is very important. This paper summarizes the fault type of generator excitation power unit and common fault analysis, through the simulation of MATLAB power unit is the main circuit fault types, fault spectrum analysis focuses on the quantitative fault feature extraction and fault classification, proposes a truth table method for fast fault diagnosis strategy of the main loop of power unit, the experiment platform verify fault categories, provide the basis for excitation system power unit failure diagnosis.

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