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FAULT DIAGNOSIS METHOD FOR STEAM TURBINE GENERATOR (STG)
FAULT DIAGNOSIS METHOD FOR STEAM TURBINE GENERATOR (STG)
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机译：汽轮发电机组故障诊断方法
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#$%^&*AU2020102137A420201015.pdf#####ABSTRACT A fault diagnosis method for a steam turbine generator (STG) includes: acquiring operating parameters, namely a stator voltage, a motor shaft temperature, a stator temperature, a rotor speed, and a rotor temperature, of a STG to be diagnosed; diagnosing, by a neural network model which includes a stacked autoencoder and a plurality of K-means classifiers, whether or not the STG to be diagnosed is faulty according to the operating parameters of the STG to be diagnosed to obtain a fault type of the STG to be diagnosed; acquiring a negative-sequence current of a stator of the STG to be diagnosed; and correcting the fault type of the STG to be diagnosed according to the negative-sequence current of the stator to obtain a diagnostic result on the STG to be diagnosed. The present invention can improve accuracy in fault diagnosis on the STG.1/1 DRAWINGS 100 Acquire operating parameters of a steam turbine generator to be diagnosed 200 Diagnose, by a neural network model, whether or not the steam turbine generator to be diagnosed is faulty according to the operating parameters of the steam turbine generator to be diagnosed to obtain a fault type of the steam turbine generator to be diagnosed 300 Acquire a negative-sequence current of a stator of the steam turbine generator to be diagnosed 400 Correct the fault type of the steam turbine generator to be diagnosed according to the negative-sequence current of the stator to obtain a diagnostic result on the steam turbine generator to be diagnosed FIG. 1 201 Generator parameter acquisition module 202 Fault diagnosis module 203 Negative-sequence current acquisition module 204 Correction module FIG. 2
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