Fault intelligent identification method for transformer winding

Abstract

The invention discloses a fault intelligent identification method for a transformer winding. The method comprises the following steps: actively injecting the pulse signal into a transformer device to obtain a network curve of a transformer winding; obtaining a transformer vibration frequency response curve based on a vibration frequency response method; extracting the characteristics of the obtained network curve of the transformer winding; extracting the characteristics of the obtained vibration frequency response curve; extracting the winding network curve characteristics of the transformer winding fault database and the vibration frequency response curve characteristics for training a support vector machine SVM; inputting the winding network curve characteristics and the vibration frequency response curve characteristics newly detected into the SVM for identifying the winding fault, and confirming whether the interior of the transformer device has the winding fault. The scientificity, high efficiency and accuracy of the fault detection and diagnosis of the transformer winding are improved.

Description

technical field [0001] The invention relates to a method for identifying internal faults of power equipment, in particular to an intelligent identification method for transformer winding faults. Background technique [0002] The transformer is one of the important equipment in the power system, and its operation stability and reliability are of great significance to ensure the safety of the power system. With the increasing capacity of my country's power grid, the short-circuit capacity is also increasing, and the reliability of the power transformer, which is the core equipment of the power system, is becoming more and more important. Once an accident occurs, it will lead to large-scale power outages and bring Huge economic losses, the consequences are more serious. With the rapid development of my country's economy, the capacity of the power grid is expanding day by day, and the short-circuit capacity of the system is also increasing. The statistics of transformer damage c...

AI Technical Summary

Problems solved by technology

With the increasing capacity of my country's power grid, the short-circuit capacity is also increasing, and the reliability of the power transformer, which is the core equipment of the power system, is becoming more and more important. Once an accident occurs, it will lead to large-scale power outages and bring Huge economic losses, the consequences are more serious

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