Abstract
This paper for the secondary system fault diagnosis Smart Substation location problem. By using fault feature, evidence table and information relationships, the basic evaluation method of the sampling abnormalities of relay apparatus, synchronization abnormalities of multiple MUs, channels abnormalities and operation abnormalities is specifically analysed. An example based on information relationships is given and the functional structure of the secondary fault diagnosis and evaluation system of the main and substation modes is designed, which provides reference for the basic technical methods and implementation methods for the fault diagnosis and location of the secondary system of Smart Substation.
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