CN104407122B - Transformer insulation oil on-line parameter measuring system - Google Patents
Transformer insulation oil on-line parameter measuring system Download PDFInfo
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- CN104407122B CN104407122B CN201410798693.3A CN201410798693A CN104407122B CN 104407122 B CN104407122 B CN 104407122B CN 201410798693 A CN201410798693 A CN 201410798693A CN 104407122 B CN104407122 B CN 104407122B
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- oil
- transformer
- sample
- measuring system
- storage bottle
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- 238000009413 insulation Methods 0.000 title claims abstract description 31
- 239000000523 sample Substances 0.000 claims abstract description 71
- 238000011045 prefiltration Methods 0.000 claims abstract description 6
- 238000005070 sampling Methods 0.000 claims abstract description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 6
- 239000007787 solid Substances 0.000 claims description 5
- 238000004891 communication Methods 0.000 claims description 4
- 239000002699 waste material Substances 0.000 claims description 4
- 230000001939 inductive effect Effects 0.000 claims description 3
- 238000005259 measurement Methods 0.000 abstract description 11
- 238000005516 engineering process Methods 0.000 abstract description 3
- 238000012423 maintenance Methods 0.000 abstract description 3
- 238000000034 method Methods 0.000 description 6
- 238000001514 detection method Methods 0.000 description 4
- 238000001914 filtration Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000003745 diagnosis Methods 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 230000001050 lubricating effect Effects 0.000 description 1
- 238000000691 measurement method Methods 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
Abstract
The present invention is applicable to transformer maintenance technology field, a kind of transformer insulation oil on-line parameter measuring system is provided, comprise oil sample detector, two temperature sensors, at least one flexible pipe being connected to transformer sample connection, described two sensors insert upper and lower two sampling spots of transformer respectively and will receive temperature data and are sent to described oil sample detector, described flexible pipe is provided with prefiltration device, described transformer sample connection is provided with switch valve, described oil sample detector comprises housing and lid panel on the housing, oil storage bottle is provided with in described housing, air pump, oil sample probe unit, master control borad and power supply unit.The invention provides a kind of transformer insulation oil on-line measurement scheme, the Chief index of in-site measurement transformer oil can be realized, with the quality of actual response transformer oil, overcome environment and human factor, pass through present system, transformer life can be extended, improve the reliability of transformer, cut operating costs.
Description
Technical field
The invention belongs to transformer maintenance technology field in power industry Substation Electric Equipment, particularly relate to a kind of transformer insulation oil on-line parameter measuring system.
Background technology
The conventional maintenance measuring method of transformer oil is off-line measurement.Relevant national standard and the regulation of operation power code is run by transformer, the annual oil to each transformer, gather the oil sample of a glass cylinder or syringe at the scene, then oil sample is taken back laboratory, parameter required for measuring in laboratory, make measurement result high dispersion because processing procedure lacks control, necessary data and precision can not be provided to the trouble-saving risk management of transformer and the insulation processing program be applicable to.In addition, this process of classic method must wait for the time at least one week, just can obtain the measurement result in laboratory, and then be judged by transformer supvr.In addition, consider that environment temperature and humidity affects, during existing hand sampling under atmospheric environment, the oil of relatively dry has different susceptibilitys to humidity at different temperature, when carrying out sample measurement in laboratory conditions, temperature oily in transformer when the temperature of oil is not sampling already in lubricating cup, its numerical value can not represent the quality of original oil certainly.Testing result can be caused like this to there is very big error.
Summary of the invention
In view of the above problems, the object of the present invention is to provide a kind of transformer insulation oil on-line parameter measuring system, be intended to solve the technical matters that existing transformer insulation oil off-line measurement method efficiency is low, poor real, error are large.
The present invention adopts following technical scheme:
A kind of transformer insulation oil on-line parameter measuring system, comprise oil sample detector, two temperature sensors, at least one flexible pipe being connected to transformer sample connection, described two sensors insert upper and lower two sampling spots of transformer respectively and will receive temperature data and are sent to described oil sample detector, described flexible pipe is provided with prefiltration device, described transformer sample connection is provided with switch valve, described oil sample detector comprises housing and lid panel on the housing, oil storage bottle is provided with in described housing, air pump, oil sample probe unit, master control borad and power supply unit, described power supply unit is powered to oil sample detector, described oil storage bottle is by described soft pipe connection extremely described transformer sample connection, described oil storage bottle is divided into upper and lower two parts by the middle device that refilters arranged, the probe portion of wherein said oil sample probe unit inserts the latter half of described oil storage bottle, and described oil sample probe unit is connected to described master control borad, described oil storage bottle side is provided with air pump joint, described air pump is connected to described oil storage bottle by described air pump joint, for flexible pipe being vacuumized and being used for sending oil back to transformer.
Further, described flexible pipe has two, is connected to upper and lower two sample connections of transformer respectively.
Further, described flexible pipe has one, is connected to the sample connection in the middle of transformer.
Further, described panel is provided with the display screen, operation push-button and the communication interface that are connected to described master control borad.
Further, on described panel, be positioned at directly over described oil storage bottle and offer observation port.
Further, described housing side is also provided with the waste oil be connected with described oil storage bottle and exports.
Further, described panel is also provided with the power interface be connected with described power supply unit.
Further, described master control borad comprises oily specific inductive capacity computing module, oily water cut computing module, oily total moisture content computing module and solid insulation water cut computing module.
The invention has the beneficial effects as follows: the invention provides a kind of transformer insulation oil on-line measurement scheme, the Chief index of in-site measurement transformer oil can be realized, the real-time measuring data of transformer oil can be obtained, the quality of actual response transformer oil, according to temperature and the water cut of on-line measurement transformer oil, system obtains total air content that can obtain transformer solid insulation moisture content and transformer oil; And the whole robotization of measuring process does not need human intervention, just can make diagnosis to the operation of transformer oil at the scene without the need to waiting for, overcoming environment and people is the factor causing measuring error, not need to be with oil sample to return laboratory off-line measurement.By present system, transformer life can be extended, improve the reliability of transformer, cut operating costs.
Accompanying drawing explanation
Fig. 1 is a kind of structural drawing of the transformer insulation oil on-line parameter measuring system that the embodiment of the present invention provides;
Fig. 2 is the another kind of structural drawing of the transformer insulation oil on-line parameter measuring system that the embodiment of the present invention provides;
Fig. 3 is the cut-away view of the transformer insulation oil on-line parameter measuring system that the embodiment of the present invention provides;
Fig. 4 is the panel structure chart of the transformer insulation oil on-line parameter measuring system that the embodiment of the present invention provides.
Embodiment
In order to make object of the present invention, technical scheme and advantage clearly understand, below in conjunction with drawings and Examples, the present invention is further elaborated.Should be appreciated that specific embodiment described herein only in order to explain the present invention, be not intended to limit the present invention.
In order to technical solutions according to the invention are described, be described below by specific embodiment.
Fig. 1 and Fig. 2 respectively illustrates two kinds of structures of the transformer insulation oil on-line parameter measuring system that the embodiment of the present invention provides, and illustrate only the part relevant to the embodiment of the present invention for convenience of explanation.
See figures.1.and.2, and the inner structure of the oil sample detector shown in composition graphs 3, the transformer insulation oil on-line parameter measuring system that the present embodiment provides comprises oil sample detector 1, two temperature sensors 2, at least one flexible pipe 3 being connected to transformer sample connection, described two sensors 2 insert upper and lower two sampling spots of transformer respectively and will receive temperature data and are sent to described oil sample detector 1, described flexible pipe 3 is provided with prefiltration device 4, described transformer sample connection is provided with switch valve 5, described oil sample detector 1 comprises housing 11 and lid panel 12 on the housing, oil storage bottle 13 is provided with in described housing 11, air pump 14, oil sample probe unit 15, master control borad 16 and power supply unit 17, described power supply unit 17 powers to oil sample detector, described oil storage bottle 13 is communicated to described transformer sample connection by described flexible pipe 3, described oil storage bottle 13 is divided into upper and lower two parts by the middle device 18 that refilters arranged, the probe portion 151 of wherein said oil sample probe unit 15 inserts the latter half of described oil storage bottle 13, and described oil sample probe unit 15 is connected to described master control borad 16, described oil storage bottle 13 side is provided with air pump joint 19, described air pump 14 is connected to described oil storage bottle 13 by described air pump joint 19, described air pump is used for being vacuumized by flexible pipe before detection on the one hand, be used on the other hand sending oil back to transformer after detection.
The transformer insulation oil on-line parameter measuring system that the present embodiment provides has two kinds of connected modes, 2 oily connected modes as shown in Figure 1 and figure single-point oil connected mode as indicated with 2.
In Fig. 1, include two flexible pipes, be respectively fuel-displaced flexible pipe 31 and oil return hose 32, two pipelines are all provided with prefiltration device for tentatively filtering oil product, in addition, generally the sample connection of transformer has three, lay respectively at the upper bottom of transformer, in the present embodiment, each transformer sample connection installs a switch valve, in order to oil circuit control.According to 2 oily connected modes, fuel-displaced flexible pipe is connected to the upper sample connection of described transformer, oil return hose is connected to the lower sample connection of transformer.
In Fig. 2, only have a flexible pipe, this flexible pipe is responsible for fuel-displaced and oil return simultaneously, and flexible pipe is also provided with prefiltration device, installs single-point oil connected mode, flexible pipe is connected to sample connection in transformer.
The principle of work of above-mentioned two kinds of two kinds of connected modes is identical, only has path that is fuel-displaced, oil return different, no matter adopts which kind of mode, be all first flexible pipe is vacuumized avoid air humidity pollute after, then oil pumping is to oil sample detector continuously, and after detection, oily being drawn out of is back to transformer.Again transformer oil is taken out, iterative cycles when next time measures.
After having pumped, oil sample detector receives the temperature data coming from described two temperature sensors and transmit, and the oil temperature of transformer top, bottom is respectively TU=TU (t), Tb=Tb (t); Calculate the temperature of medial temperature Tts as transformer oil of two temperature, then oil sample detector can obtain the distribution plan of all parameters relative to the time.What first obtain is the dielectric strength Ud=Ud (t) of transformer oil and W/O amount Cw=Cw (t), then can total air content of accurate Calculation transformer solid insulation moisture content Cp=Cp (Cw, tts) and transformer oil according to Cw and TTS two mean values.
During specific implementation, first opening switch valve booster air pump, flexible pipe is vacuumized, then by the first half of transformer oil suction oil storage bottle, after refiltering device and filtering, enter oil storage bottle the latter half, after the detection of oil sample probe unit receives oil sample, export related data to master control borad, master control borad receives the temperature data that temperature sensor exports simultaneously, master control borad calculates specific inductive capacity and the water cut of oil product, then calculates total air content of transformer solid insulation moisture content and transformer oil further.
Preferred further, the panel structure chart shown in composition graphs 4, described panel 12 is provided with the display screen 121, operation push-button 122 and the communication interface 123 that are connected to described master control borad 16.The enforcement index parameter of transformer oil can be demonstrated in real time by described display screen, associative operation and setting can be carried out to oil sample detector by described operation push-button, the result data calculated can be uploaded to notebook computer by described communication interface, later notebook computer is analyzed further.
Preferred in addition, on described panel 12, be positioned at directly over described oil storage bottle 13 and offer observation port 124, oil conditions in oil storage bottle can be seen by described observation port.
Further, described housing side is also provided with the waste oil be connected with described oil storage bottle and exports 125, the useless assorted discharge can will filtered by described waste oil outlet.
Further, described panel is also provided with the power interface 126 be connected with described power supply unit, oil sample detector can be connected in AC power by this power interface.
To sum up, the invention provides a kind of transformer insulation oil on-line parameter measuring system, on-line measurement can obtain the real-time parameter data of transformer oil, the whole robotization of measuring process does not need human intervention, overcoming people is the factor causing error, study through long-term Real Time Monitoring, can run book be provided, thus sum up and understand the actual motion rule of transformer oil.
The foregoing is only preferred embodiment of the present invention, not in order to limit the present invention, all any amendments done within the spirit and principles in the present invention, equivalent replacement and improvement etc., all should be included within protection scope of the present invention.
Claims (8)
1. a transformer insulation oil on-line parameter measuring system, it is characterized in that, described system comprises oil sample detector, two temperature sensors, at least one flexible pipe being connected to transformer sample connection, described two sensors insert upper and lower two sampling spots of transformer respectively and will receive temperature data and are sent to described oil sample detector, described flexible pipe is provided with prefiltration device, described transformer sample connection is provided with switch valve, described oil sample detector comprises housing and lid panel on the housing, oil storage bottle is provided with in described housing, air pump, oil sample probe unit, master control borad and power supply unit, described power supply unit is powered to oil sample detector, described oil storage bottle is by described soft pipe connection extremely described transformer sample connection, described oil storage bottle is divided into upper and lower two parts by the middle device that refilters arranged, the probe portion of wherein said oil sample probe unit inserts the latter half of described oil storage bottle, and described oil sample probe unit is connected to described master control borad, described oil storage bottle side is provided with air pump joint, described air pump is connected to described oil storage bottle by described air pump joint, for flexible pipe being vacuumized and being used for sending oil back to transformer.
2. transformer insulation oil on-line parameter measuring system as claimed in claim 1, it is characterized in that, described flexible pipe has two, is connected to upper and lower two sample connections of transformer respectively.
3. transformer insulation oil on-line parameter measuring system as claimed in claim 1, it is characterized in that, described flexible pipe has one, is connected to the sample connection in the middle of transformer.
4. transformer insulation oil on-line parameter measuring system as described in any one of claim 1-3, is characterized in that, described panel is provided with the display screen, operation push-button and the communication interface that are connected to described master control borad.
5. transformer insulation oil on-line parameter measuring system as claimed in claim 4, is characterized in that, on described panel, is positioned at directly over described oil storage bottle and offers observation port.
6. transformer insulation oil on-line parameter measuring system as claimed in claim 4, it is characterized in that, described housing side is also provided with the waste oil be connected with described oil storage bottle and exports.
7. transformer insulation oil on-line parameter measuring system as claimed in claim 4, is characterized in that, described panel is also provided with the power interface be connected with described power supply unit.
8. transformer insulation oil on-line parameter measuring system as claimed in claim 4, it is characterized in that, described master control borad comprises oily specific inductive capacity computing module, oily water cut computing module, oily total moisture content computing module and solid insulation water cut computing module.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410798693.3A CN104407122B (en) | 2014-12-18 | 2014-12-18 | Transformer insulation oil on-line parameter measuring system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410798693.3A CN104407122B (en) | 2014-12-18 | 2014-12-18 | Transformer insulation oil on-line parameter measuring system |
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| CN104407122A CN104407122A (en) | 2015-03-11 |
| CN104407122B true CN104407122B (en) | 2016-04-06 |
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Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105137046B (en) * | 2015-08-21 | 2017-04-12 | 许继集团有限公司 | Detection device of micro water in transformer oil and transformer provided with same |
| CN105891452B (en) * | 2016-05-27 | 2017-10-27 | 国网浙江省电力公司宁波供电公司 | A kind of oil tank moisture detecting device |
| CN107703282A (en) * | 2017-08-16 | 2018-02-16 | 国网天津市电力公司电力科学研究院 | A kind of micro- water test device of 1000kV transformer insulation oils |
| CN108955926A (en) * | 2018-07-06 | 2018-12-07 | 深圳供电局有限公司 | A kind of analysis system applied to insulation oil temperature |
| CN215115863U (en) * | 2020-12-10 | 2021-12-10 | 国网上海市电力公司 | Detection apparatus for antioxidant content in transformer plant insulating oil |
| CN114487360A (en) * | 2022-02-17 | 2022-05-13 | 国家电网有限公司特高压建设分公司 | Gas content detector for insulating oil and control method thereof |
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| US7222518B2 (en) * | 2004-04-07 | 2007-05-29 | Hitachi Industrial Equipment Systems Co., Ltd. | Transformer monitoring system |
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Granted publication date: 20160406 Termination date: 20171218 |