Transformer diagnosis system and diagnosis method

Abstract

The invention discloses a transformer diagnosis system which comprises a transformer, a sensor, an analog filter module, a power supply module, an RS232 transceiving module, a PC upper computer, a sampling control module, a battery and a DC-DC circuit. According to the invention, acoustic features generated during transformer failure detection in a frequency range of 20Hz-10kHz are compared to diagnose the operation state of a transformer; and the magnetically mounted vibration or acoustic sensor clings to the surface of the transformer to perform signal monitoring, is high in signal to noise ratio and convenient to mount, is less influenced by external interference, does not influence normal operation of the transformer and does not cause damage to the transformer structure. The invention also discloses a transformer diagnosis method using the transformer diagnosis system.

Description

technical field

[0001] The invention relates to the technical field of transformers, in particular to a transformer diagnosis system, and also relates to a diagnosis method using the transformer diagnosis system. Background technique

[0002] The echolocation technology of sound waves and vibration waves has broad application prospects in the power industry, especially when transformers are in normal operation, because the alternating current passes through the windings of the transformer to generate periodically changing alternating magnetic flux in the iron core, causing the iron core The vibration of the transformer will emit a uniform humming sound. Once the iron core winding in the transformer fails or arc discharge occurs, its acoustic characteristics will also change accordingly and present certain inherent characteristics. Therefore, the acoustic characteristic signal of transformer equipment can represent the operating state of the transformer.

[0003] At present,...

Examples

Embodiment Construction

[0014] The implementation of the present invention will be described in detail below in conjunction with the accompanying drawings, but they do not constitute a limitation to the present invention, they are only examples, and at the same time, the advantages of the present invention will become clearer and easier to understand.

[0015] Referring to the accompanying drawings, it can be seen that the transformer diagnosis system of the present invention includes a transformer 1, a sensor 2, an analog filter module 3, a power supply module 4, an RS232 transceiver module 5, a PC upper computer 6, a sampling control module 7, a battery 8 and a DC-DC circuit 9. The battery 8 is connected to the input end of the DC-DC circuit 9, and the output end of the DC-DC circuit 9 is respectively connected to the sensor 2, the analog filter module 3 and the power supply module 4, and the analog filter module 3 and the power supply The output end of module 4 is all connected with sampling contro...

technical field

[0001] The invention relates to the technical field of transformers, in particular to a transformer diagnosis system, and also relates to a diagnosis method using the transformer diagnosis system. Background technique

[0002] The echolocation technology of sound waves and vibration waves has broad application prospects in the power industry, especially when transformers are in normal operation, because the alternating current passes through the windings of the transformer to generate periodically changing alternating magnetic flux in the iron core, causing the iron core The vibration of the transformer will emit a uniform humming sound. Once the iron core winding in the transformer fails or arc discharge occurs, its acoustic characteristics will also change accordingly and present certain inherent characteristics. Therefore, the acoustic characteristic signal of transformer equipment can represent the operating state of the transformer.

[0003] At present,...

Examples

Embodiment Construction

[0014] The implementation of the present invention will be described in detail below in conjunction with the accompanying drawings, but they do not constitute a limitation to the present invention, they are only examples, and at the same time, the advantages of the present invention will become clearer and easier to understand.

[0015] Referring to the accompanying drawings, it can be seen that the transformer diagnosis system of the present invention includes a transformer 1, a sensor 2, an analog filter module 3, a power supply module 4, an RS232 transceiver module 5, a PC upper computer 6, a sampling control module 7, a battery 8 and a DC-DC circuit 9. The battery 8 is connected to the input end of the DC-DC circuit 9, and the output end of the DC-DC circuit 9 is respectively connected to the sensor 2, the analog filter module 3 and the power supply module 4, and the analog filter module 3 and the power supply The output end of module 4 is all connected with sampling contro...

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