On-line monitoring system for noise and vibration of transformer

Abstract

The invention relates to an on-line monitoring system for noise and vibration of a transformer. The system comprises a transformer signal acquisition module, a data acquisition module, an industrial personal computer, a wireless communication module and a remote terminal, wherein the transformer signal acquisition module is integrated on a box body, the data acquisition module and the industrial personal computer are arranged in the box body, the transformer signal acquisition module is connected with the data acquisition module, the data acquisition module is connected with the industrial personal computer, the industrial personal computer is connected with the remote terminal through the wireless communication module, and the transformer signal acquisition module comprises a voltage/current sensor, a vibration acceleration sensor, a Hall sensor and an oil chromatography monitoring device. Compared with the prior art, the on-line monitoring system has the advantages of comprehensive and accurate monitoring, low cost and the like.

Description

technical field [0001] The invention relates to the technical field of on-line monitoring equipment, in particular to an on-line monitoring system for transformer noise and vibration. Background technique [0002] Transformer is an important part of the power system, it has an irreplaceable role, and its operating status has a great impact on the safety and economic operation of the power system. In the long-term operation of transformers, failures and accidents caused by various reasons cannot be completely avoided. Therefore, the correct diagnosis and early prediction of faults are of more urgent practicality and importance. However, the fault diagnosis of transformers is a very complicated problem. Many factors such as transformer capacity, voltage level, insulation performance, working environment, operation history and even products of different manufacturers will affect the diagnosis results. [0003] At present, the most important method for on-line monitoring of tr...

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Problems solved by technology

However, the fault diagnosis of transformers is a very complicated problem. Many factors such as transformer capacity, voltage level, insulation performance, working environment, operation history and even products of different manufacturers will affect the diagnosis results.

[0003] At present, the most important method for on-line monitoring of transformers is chromatographic analysis of dissolved gases in transformer oil or using a single vibration signal to reflect the deformation of transformer windings. However, chromatographic analysis of dissolved gases in transformer oil is mainly aimed at judging faults such as overheating and discharge of transformers. For example, mechanical failure, control circuit failure, etc. cannot be reflected in time; but only a single vibration signal is used to monitor the failure of the transformer, and there will be certain errors

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