A Fault Diagnosis Approach for Power Grid with Information Fusion
نویسندگان
چکیده
Considering the development of power system automation and communications technology, this paper presents a fault diagnosis approach for power grid with information fusion based on multi-data resources which contain the switching-status data related to breakers and protection relays, and the continuous-time data derived from fault recorders. Fuzzy Petri nets and wavelet energy analysis are employed to extract fault features. The fuzzy integral theory is used to execute information fusion. Simulation example and calculations show that, the proposed approach significantly improves the diagnostic accuracy while effectively lowers the influence resulted from relay or breaker’s mal-operation or refuse-operation, and has good application value.
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