Transformer fault diagnosing system

Abstract

The invention discloses a transformer fault diagnosing system. The transformer fault diagnosing system comprises a data collecting module, a data processing module, a fault diagnosing module and a monitoring platform, wherein the data collecting module collects sound signals transmitted by a transformer in work; the data processing module processes the collected sound signals to obtain the sound feature information of the sound signals; the fault diagnosing module is used for comparing the obtained sound feature information with the prestored sound feature information of the sound signals transmitted by the transformer in normal work to determine whether the transformer is faulted and outputting diagnosing results to the monitoring platform; the monitoring platform is used for receiving the diagnosing results and issuing alarm and reminding maintenance personnel for maintaining when the diagnosing results show that the transformer is faulted. The transformer fault diagnosing system isconvenient to use, can determine different fault state of the transformer of a substation through different sound signals transmitted by the transformer, thereby improving the degree of integration, reducing the number of times of inspection by workers and saving the costs.

Description

technical field [0001] The invention relates to the technical field of power equipment monitoring, in particular to a transformer fault diagnosis system. Background technique [0002] At present, the status monitoring of transformers mainly involves abnormal voltage, abnormal current, abnormal temperature, etc., which require different sensor units for monitoring. After the transformer is switched on and energized, the alternating magnetic flux in the iron core will produce a force vibration between the silicon steel sheets of the iron core. Therefore, there will be a "humming" sound, and the size of this sound is proportional to the voltage and current applied to the transformer. In normal operation, the sound of the transformer core should be uniform, but if abnormal current or voltage occurs, the characteristics of this sound will change. At the same time, other conditions such as loose parts of the transformer, iron core failure, inter-turn short circuit, etc. will cau...

AI Technical Summary

Problems solved by technology

In normal operation, the sound of the transformer iron core should be uniform, but if abnormal current or abnormal voltage occurs, the characteristics of this sound will change

At the same time, other conditions such as loose parts of the transformer, iron core failure, inter-turn short circuit, etc. will cause the change of this sound characteristic

[0003] At present, the monitoring form of transformer sound is mainly based on regular inspections by staff, and problems cannot be found in time, and the main problems reflected are only abnormal voltage and abnormal current. The subjective judgment factors are also relatively large, and there is a lack of quantitative indicators.

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