Design of TV Disconnection Identification Method for Synchronous Motor Excitation System
This article introduces several fast judgment methods for stator TV and system TV disconnection or abnormality applicable to synchronous motor excitation systems.Through real-time comparison of dual TVs,voltage negative sequence component judgment,and the comprehensive judgment of stator TV disconnection through the electrical relationship between machine terminal voltage,excitation current,and stator current,the system TV disconnection is determined through the electrical relationship between machine terminal voltage and system voltage.The above methods can accurately This method effectively identifies different types of TV disconnection or abnormal situations,and is also suitable for slow melting of TV high-voltage side fuses,effectively ensuring the safety of excitation system regulation through voltage feedback.
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