CN107576379A - A kind of oil-filled transformer body noise-monitoring equipment and method - Google Patents
A kind of oil-filled transformer body noise-monitoring equipment and method Download PDFInfo
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- CN107576379A CN107576379A CN201710665587.1A CN201710665587A CN107576379A CN 107576379 A CN107576379 A CN 107576379A CN 201710665587 A CN201710665587 A CN 201710665587A CN 107576379 A CN107576379 A CN 107576379A
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- pipeline
- oil
- analysis system
- sonic transducer
- filled transformer
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Abstract
The present invention, which provides a kind of oil-filled transformer body noise-monitoring equipment and method, described device, to be included：Pipeline, sonic transducer and signal processing and analysis system；Described pipeline one end is blind end, and the other end is openend, and the openend is connected with oil tank for oil immersion type transformer；The sonic transducer is installed on inside the pipeline, and the sonic transducer is connected with the signal processing and analysis system of the pipeline external.Device provided by the invention passes through a pipeline being connected with oil tank for oil immersion type transformer, sonic transducer is disposed in pipeline, receive the operation sound of oil-filled transformer, monitor the state of oil-filled transformer, interference of the ambient noise to transformer body noise monitoring can significantly be reduced, when can reduce oil-filled transformer body noise in receive process simultaneously, the decay and distortion of propagation.
Description
Technical field
The present invention relates to power transformer on-line monitoring technique field, more particularly, to a kind of oil-filled transformer sheet
Bulk noise monitoring device and method.
Background technology
On-line monitoring is the basis of status of electric power maintenance and according to increasingly being paid close attention to by power industry.To oil
For immersion transformer, the existing monitoring of oil dissolved gas, the monitoring of shelf depreciation, temperature monitoring, water content monitoring etc. are more
Kind monitoring technology.But the generation of gas, local electric discharge, the change of temperature, change of water content etc., often transformer
State have occurred and that change, or even caused by breaking down.This means that existing oil-filled transformer status monitoring
The monitoring of the early stage problem of technology and diagnosis capability still have to be hoisted.
Some mechanical breakdowns occur inside oil-filled transformer, during such as winding deformation, loosening, electric discharge, its this bulk noise is
Quarter can change, therefore the on-line monitoring based on acoustical signal is a kind of effective means.Common methods are apart from transformation at present
Microphone is installed outside device, utilizes the failure that analysis transformer is likely to occur in the acoustical signal measured.But the sound that microphone measures
Signal is as produced by the vibration of transformer core and winding etc., by transformer oil, transformer-cabinet, is eventually spread to air
In.The signal of this transformer body noise measuring method measurement, it experienced the complexity again to air from liquid to solid and propagate
Process, actually have occurred that larger decay and distortion.Secondly, the environment where transformer is often more complicated, may
Corona noise, fan noise, reactor noise, animal cry etc. be present.These noises can all give the standard of transformer body noise
Really measure to disturb, so as to influence the reliability of the transformer online monitoring based on acoustical signal.
The content of the invention
To solve in the prior art, in transformer body noise monitoring, meeting generation environment noise brings influence to monitoring,
The interference of decay and distortion is easily produced during sound transmission simultaneously, proposes a kind of oil-filled transformer body noise monitoring
Device and method.
According to an aspect of the present invention, there is provided a kind of oil-filled transformer body noise-monitoring equipment, including：Pipeline,
Sonic transducer and signal processing and analysis system；Described pipeline one end is blind end, and the other end is openend, the openend and oil
The fuel tank of immersion transformer is connected；The sonic transducer is installed on inside the pipeline, outside the sonic transducer and the pipeline
The signal processing and analysis system in portion is connected.
Wherein, in addition to stuffing-box and sensor wire, the stuffing-box are arranged on the pipeline, the sensor electricity
Cable is connected by stuffing-box from by the sonic transducer with the signal processing and analysis system.
Preferably, the rubber in the stuffing-box is nitrile rubber.
Wherein, in addition to underwater electrical connector and sensor wire, the underwater electrical connector are arranged on pipeline, the sensing
Device cable is connected by underwater electrical connector from by the sonic transducer with the signal processing and analysis system.
Wherein, the pipeline longitudinal section is Z-type or S types.
Wherein, the cross-section of pipeline is circle, square, rectangle or other regular polygons.
Wherein, the signal processing and analysis system is using LAN-XI data acquisition and analysis systems or other same types
Data acquisition and analysis system.
Wherein, the pipeline uses metal material.
Wherein, the pipeline use for posted sides pipeline.
According to another aspect of the present invention, there is provided a kind of oil-filled transformer body noise monitoring method, including, based on upper
A kind of oil-filled transformer body noise-monitoring equipment stated, the sound that oil-filled transformer is received by the sonic transducer are believed
Number, and give the transmission of sound signals to signal processing and analysis system；
By the signal processing and analysis system, the running status of the oil-filled transformer is monitored.
Device provided by the invention, by a pipeline being connected with oil tank for oil immersion type transformer, the placement sound in pipeline
Sensor, the operation sound of oil-filled transformer is received, monitor the state of oil-filled transformer, can significantly reduce ambient noise pair
The interference of transformer body noise monitoring, while when can reduce oil-filled transformer body noise in receive process, propagation
Decay and distortion.
Brief description of the drawings
Fig. 1 is a kind of structure chart of oil-filled transformer body noise-monitoring equipment provided in an embodiment of the present invention；
Fig. 2 is a kind of flow chart of oil-filled transformer body noise monitoring method provided in an embodiment of the present invention.
Marked in accompanying drawing：1- pipelines；2- sonic transducers；3- signal processing and analysis systems；4- sensor cables；5- fillers
Letter；6- oil tank for oil immersion type transformer.
Embodiment
To make the purpose, technical scheme and advantage of the embodiment of the present invention clearer, below in conjunction with the embodiment of the present invention
In accompanying drawing, the technical scheme in the embodiment of the present invention is explicitly described, it is clear that described embodiment be the present invention
Part of the embodiment, rather than whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art are not having
The every other embodiment obtained under the premise of creative work is made, belongs to the scope of protection of the invention.
With reference to figure 1, Fig. 1 is a kind of structure of oil-filled transformer body noise-monitoring equipment provided in an embodiment of the present invention
Figure, the oil-filled transformer body noise-monitoring equipment include：Pipeline 1, sonic transducer 2 and signal processing and analysis system 3, institute
It is blind end to state described pipeline one end, and the other end is openend, and the openend is connected with oil tank for oil immersion type transformer 6；It is described
Sonic transducer 2 is installed on inside the pipeline, the phase of signal processing and analysis system 3 of the sonic transducer and the pipeline external
Even.
Specifically, in use, the oil of fuel tank can fill pipeline in oil-filled transformer, oil-filled transformer is being transported
Noise during row can be propagated by pipeline, and sonic transducer can receive the sound for being propagated through and in pipeline,
And sound is converted into electric signal and is sent to signal processing and analysis system, so as to which the running status reached to oil-filled transformer is entered
The effect of row monitoring.
By this device, when being run to oil-filled transformer the collection of this bulk noise propagated not over air, from
And the sound attenuating in monitoring process and distortion are drastically reduce the area, while reduce ambient noise and transformer body noise is supervised
The interference of survey.
On the basis of above-described embodiment, described device also includes also including stuffing-box 5 and sensor wire 4, described to fill out
Expect that letter 5 is arranged on the pipeline 1, the sensor cable 4 is by stuffing-box 5 from by the sonic transducer 2 and the signal
Acquisition analysis system 3 is connected.The nitrile rubber that rubber in the stuffing-box uses.
Specifically, being open on the position that sound transducer is laid to pipeline, and stuffing-box is installed, sensor
Cable is connected by stuffing-box with the signal processing and analysis system outside pipeline.In stuffing-box, the rubber used is using fourth
Fine rubber.
By this device, in the case that stuffing-box ensure that the oil inside pipeline is not spilt, sensor wire is passed from sound
Sensor is connected in signal processing and analysis system.
On the basis of the various embodiments described above, in addition to underwater electrical connector and sensor wire 4, the underwater electrical connector peace
On pipeline, the sensor cable 4 is by underwater electrical connector from by the sonic transducer 2 and the signal processing and analysis system
System 3 is connected.
Specifically, underwater electrical connector can be as the refill-unit of stuffing-box, for sensor cable is guided inside pipeline
It is connected to pipeline external, and with signal processing and analysis system.
By this device, the flexibility of the present apparatus is improved, different devices may be selected under various circumstances and sensed
Device cable guide.
On the basis of the various embodiments described above, the pipeline longitudinal section is Z-type or S types, and the cross-section of pipeline is circle,
Square, rectangle or other regular polygons.
Specifically, the longitudinal section of pipeline can be Z-type or S types, under different use conditions, device installation is added
Flexibility, meanwhile, cross-section of pipeline is circle, square, rectangle or other polygons.
On the basis of the various embodiments described above, the signal processing and analysis system is using LAN-XI data collection and analysis
System.
Specifically, the data collecting system being connected with sonic transducer is using LAN-XI data collecting systems.
LAN-XI data collecting systems, which can record, to obtain time data from up to 12 sound with vibration data passage.
The system uses the firmware installed in LAN-XI front end hardware modules, and input channel, dynamic range and connector type can be done
Go out selection.The acquisition module generally with a Battery pack block combiner, forms moveable long-range recorder, in addition, also acceptable
Power network, external direct current and POE.Module control is easy, conveniently starts and terminates record.
On the basis of the various embodiments described above, the posted sides pipeline for metal material that the pipeline uses.
Specifically, for the pipeline that is connected with oil tank for oil immersion type transformer using external diameter and wall ratio 10-20's
Posted sides pipeline, it is common metal material such as stainless steel, aluminum or copper pipeline that material, which is typically selected,.
By this device, interference of the outside noise to sonic transducer can be greatly decreased using the pipeline of heavy wall, lifted to oil
The accuracy of immersion transformer body noise monitoring.
With reference to figure 2, Fig. 2 is a kind of flow of oil-filled transformer body noise monitoring method provided in an embodiment of the present invention
Figure, methods described include：
S101, based on oil-filled transformer body noise-monitoring equipment, oil immersed type transformation is received by the sonic transducer
The voice signal of device, and give the transmission of sound signals to signal processing and analysis system；
S102 is monitored by the signal processing and analysis system to the running status of the oil-filled transformer.
Specifically, in use, the oil of fuel tank can fill pipeline in oil-filled transformer, oil-filled transformer is being transported
Noise during row can be propagated by pipeline, and sonic transducer can receive the sound for being propagated through and in pipeline,
And sound is converted into electric signal and is sent to signal processing and analysis system, so as to which the running status reached to oil-filled transformer is entered
The effect of row monitoring.
By the method, it can significantly reduce interference of the ambient noise to transformer body noise monitoring, while oil can be reduced
When immersion transformer body noise is in receive process, the decay and distortion of propagation.
Finally, the present processes are only preferable embodiment, are not intended to limit the scope of the present invention.It is all
Within the spirit and principles in the present invention, any modification, equivalent substitution and improvements made etc., the protection of the present invention should be included in
Within the scope of.
Claims (10)
- A kind of 1. oil-filled transformer body noise-monitoring equipment, it is characterised in that including：Pipeline, sonic transducer and signal are adopted Set analysis system；Described pipeline one end is blind end, and the other end is openend, the openend and oil tank for oil immersion type transformer phase Even；The sonic transducer is installed on inside the pipeline, the signal processing and analysis system of the sonic transducer and the pipeline external System is connected.
- 2. device according to claim 1, it is characterised in that also including stuffing-box and sensor wire, the stuffing-box On the pipeline, the sensor cable is by stuffing-box from by the sonic transducer and the signal processing and analysis system System is connected.
- 3. device according to claim 2, it is characterised in that the rubber in the stuffing-box is nitrile rubber.
- 4. device according to claim 1, it is characterised in that also including underwater electrical connector and sensor wire, the water Touch plug-in unit to be arranged on pipeline, the sensor cable is adopted by underwater electrical connector from by the sonic transducer and the signal Set analysis system is connected.
- 5. device according to claim 1, it is characterised in that the pipeline longitudinal section is Z-type or S types.
- 6. device according to claim 1, it is characterised in that the cross-section of pipeline for circle, square, rectangle or Regular polygon.
- 7. device according to claim 1, it is characterised in that the signal processing and analysis system is using LAN-XI numbers According to acquisition analysis system or the data acquisition and analysis system of other same types.
- 8. device according to claim 1, it is characterised in that the pipeline uses metal material.
- 9. device according to claim 1, it is characterised in that the pipeline use for posted sides pipeline.
- A kind of 10. oil-filled transformer body noise monitoring method, it is characterised in that including：The device provided based on claim 1, the voice signal of oil-filled transformer is received by the sonic transducer, and by institute State transmission of sound signals and give signal processing and analysis system；By the signal processing and analysis system, the running status of the oil-filled transformer is monitored.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710665587.1A CN107576379A (en) | 2017-08-07 | 2017-08-07 | A kind of oil-filled transformer body noise-monitoring equipment and method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710665587.1A CN107576379A (en) | 2017-08-07 | 2017-08-07 | A kind of oil-filled transformer body noise-monitoring equipment and method |
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| CN107576379A true CN107576379A (en) | 2018-01-12 |
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| CN201710665587.1A Pending CN107576379A (en) | 2017-08-07 | 2017-08-07 | A kind of oil-filled transformer body noise-monitoring equipment and method |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110595597A (en) * | 2019-10-24 | 2019-12-20 | 国网湖南省电力有限公司 | Installation equipment for internal noise monitoring sensor of oil-immersed transformer and correction method thereof |
| CN112285796A (en) * | 2020-10-10 | 2021-01-29 | 国网湖南省电力有限公司 | Oil-immersed reactor noise prediction method based on reciprocity principle |
| CN113257543A (en) * | 2021-04-02 | 2021-08-13 | 山东电力设备有限公司 | Internal noise measuring device for transformer oil tank |
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| CN106405349A (en) * | 2016-09-20 | 2017-02-15 | 国网上海市电力公司 | Method and system of intrusion ultra high frequency and ultrasonic detection of partial discharge in transformer oil |
| CN206002196U (en) * | 2016-08-30 | 2017-03-08 | 广东电网有限责任公司电力科学研究院 | A kind of oil-immersed power transformer basket vibration monitoring system |
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| CN201804668U (en) * | 2010-09-16 | 2011-04-20 | 保定天威集团(江苏)五洲变压器有限公司 | Oil tank for transformers |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110595597A (en) * | 2019-10-24 | 2019-12-20 | 国网湖南省电力有限公司 | Installation equipment for internal noise monitoring sensor of oil-immersed transformer and correction method thereof |
| CN110595597B (en) * | 2019-10-24 | 2024-03-12 | 国网湖南省电力有限公司 | Installation equipment of noise monitoring sensor in oil immersed transformer and correction method thereof |
| CN112285796A (en) * | 2020-10-10 | 2021-01-29 | 国网湖南省电力有限公司 | Oil-immersed reactor noise prediction method based on reciprocity principle |
| CN113257543A (en) * | 2021-04-02 | 2021-08-13 | 山东电力设备有限公司 | Internal noise measuring device for transformer oil tank |
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Application publication date: 20180112 |