CN205679556U - Oil-immersed power transformer inflation stores analogue experiment installation - Google Patents
Oil-immersed power transformer inflation stores analogue experiment installation Download PDFInfo
- Publication number
- CN205679556U CN205679556U CN201620483487.8U CN201620483487U CN205679556U CN 205679556 U CN205679556 U CN 205679556U CN 201620483487 U CN201620483487 U CN 201620483487U CN 205679556 U CN205679556 U CN 205679556U
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- oil
- power transformer
- metal box
- immersed power
- inflation
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- 238000002474 experimental method Methods 0.000 title claims abstract description 30
- 238000009434 installation Methods 0.000 title claims abstract description 13
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims abstract description 46
- 239000002184 metal Substances 0.000 claims abstract description 44
- 229910052751 metal Inorganic materials 0.000 claims abstract description 44
- 229910052757 nitrogen Inorganic materials 0.000 claims abstract description 23
- 238000007789 sealing Methods 0.000 claims abstract description 4
- 238000012360 testing method Methods 0.000 claims description 7
- 239000000853 adhesive Substances 0.000 claims description 3
- 230000001070 adhesive effect Effects 0.000 claims description 3
- 238000000034 method Methods 0.000 abstract description 15
- 238000003860 storage Methods 0.000 abstract description 13
- 230000008859 change Effects 0.000 abstract description 12
- 230000008569 process Effects 0.000 abstract description 9
- 230000006872 improvement Effects 0.000 abstract description 5
- 239000011810 insulating material Substances 0.000 description 11
- 239000007787 solid Substances 0.000 description 10
- 238000001035 drying Methods 0.000 description 5
- 230000007774 longterm Effects 0.000 description 3
- 238000005259 measurement Methods 0.000 description 3
- 230000032683 aging Effects 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 238000005538 encapsulation Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 238000004088 simulation Methods 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000001680 brushing effect Effects 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 238000000151 deposition Methods 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 239000010931 gold Substances 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 238000000227 grinding Methods 0.000 description 1
- 230000036571 hydration Effects 0.000 description 1
- 238000006703 hydration reaction Methods 0.000 description 1
- 238000007654 immersion Methods 0.000 description 1
- 238000001764 infiltration Methods 0.000 description 1
- 230000008595 infiltration Effects 0.000 description 1
- 238000005304 joining Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 239000003973 paint Substances 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
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- Testing Resistance To Weather, Investigating Materials By Mechanical Methods (AREA)
Abstract
The utility model relates to a kind of oil-immersed power transformer inflation and stores analogue experiment installation, device includes the metal box of sealing and the pressure sensor being arranged on metal box, temperature sensor and dew point transducer, during experiment, in metal box is located at high/low temperature experimental box and inside is full of nitrogen, this device can simulate oil-immersed power transformer inflation store when under variation of ambient temperature internal pressure, temperature and humidity is (i.e., dew point) change, by to the record of data and analysis, thus the Changing Pattern of internal moisture content when understanding that oil-immersed power transformer inflates storage for a long time, the improvement of the state estimation during storing for oil-immersed power transformer inflation and inflation storage process and management is provided fundamental basis.
Description
Technical field
The utility model belongs to oil-immersed power transformer inflation storing technology field, is specifically related to a kind of oil-immersed type power
Transformer inflation stores analogue experiment installation.
Background technology
Oil-immersed power transformer is the important critical electrical equipment in electrical network and power plant, and oil-immersed power transformer is in storage
Would generally be vented during depositing in oil tank of transformer oily, be then often filled with dry nitrogen and keep malleation, outside avoiding
The infiltration of portion's moisture.At present, when the inflation of domestic large oil immersed power transformer stores, the drying nitrogen being filled with requires dew point
＜-40 DEG C, normally only carries out gas pressure monitoring, and installs automatic air supply device.
Oil-immersed power transformer nitrogen charging stores and originally belongs to interim measure, but is because a variety of causes, in transformer factory and
The situation that the long-time nitrogen charging of engineering site is deposited is of common occurrence.But domestic at present do not form unified longer-term storage journey
Preface part and technological requirement, do not have long-time nitrogen charging to deposit special requirement of experiment or the installation and debugging points for attention of transformer, and
And also do not have long-time nitrogen charging to deposit process experience for reference and use for reference, thus transformer can not evaded and dispatch from the factory after experiment terminates
Long-time nitrogen charging is deposited exists bigger quality risk.
In a low temperature of very long in the winter time, the moisture in the nitrogen being filled with in transformer will present full with the reduction of temperature
And precipitation, thus absorbed by insulating materials, and the water content in insulating paper is affect its electric property and aging speed important
Factor, after water content exceedes the limit value of regulation, its electric property drastically declines, and aging speed dramatically speeds up, should at Practical Project
In with, the engineering project causing due to transformer quality is stagnated of common occurrence, and high-power transformer depot repair needs height
High transport and maintenance cost, can affect the progress of project simultaneously, cause bigger economic loss.Therefore, in order to reduce change
Depressor inflation store during it may happen that hidden danger of quality, it is necessary to understand transformer long term storage when internal moisture content change
Law, to formulate longer-term storage program file and technological requirement.
Utility model content
The purpose of this utility model is to provide a kind of oil-immersed power transformer inflation and stores analogue experiment installation, Neng Goumo
Intend internal pressure, the change of temperature and humidity (that is, dew point) under variation of ambient temperature when oil-immersed power transformer inflation stores
Change, by the record of data and analysis, thus internal moisture content when understanding that oil-immersed power transformer inflates storage for a long time
Changing Pattern, the state estimation during storing for oil-immersed power transformer inflation and inflation storage process and management
Improvement is provided fundamental basis.
The utility model be the technical scheme is that
A kind of oil-immersed power transformer inflation stores analogue experiment installation, including the metal box sealing and be arranged on gold
Belong to the pressure sensor on case, temperature sensor and dew point transducer, pressure sensor, temperature sensor and dew point transducer
Test lead is respectively positioned on inside metal box, the output of pressure sensor, temperature sensor and dew point transducer respectively with metal box
Outside industrial computer connects, and during experiment, in metal box is located at high/low temperature experimental box and inside is full of nitrogen.
Further, under the test lead of pressure sensor, temperature sensor and dew point transducer is respectively positioned in metal box
Portion.
Further, pressure sensor, temperature sensor and dew point transducer all use and are threadably mounted on metal box simultaneously
Thread locking adhesive is used to carry out encapsulation process.
The beneficial effects of the utility model are:
This device uses metal box simulation oil-immersed power transformer oil tank, uses high/low temperature experimental box simulated environment temperature
Change, employing pressure sensor are measured the internal nitrogen pressure of metal box in real time, are used temperature sensor to measure in real time in metal box
Portion's nitrogen temperature, employing dew point transducer are measured the internal nitrogen dew point of metal box in real time, are used industrial computer to enter the data gathering
Row record and analysis；This device can simulate internal under variation of ambient temperature when oil-immersed power transformer inflation stores pressure
Power, the change of temperature and humidity (that is, dew point), by the record of data and analysis, thus understand oil-immersed power transformer
The Changing Pattern of internal moisture content when long-term inflation stores, the state during storing for oil-immersed power transformer inflation is commented
Estimate and inflate storage process and the improvement of management is provided fundamental basis.
Brief description
Fig. 1 is the structural representation that oil-immersed power transformer inflation stores analogue experiment installation.
In figure: 1-metal box；2-pressure sensor；3-temperature sensor；4-dew point transducer.
Detailed description of the invention
With embodiment, the utility model is further described below in conjunction with the accompanying drawings.
As it is shown in figure 1, a kind of oil-immersed power transformer inflation stores analogue experiment installation, including the metal box 1 sealing
And the pressure sensor being arranged on metal box 1 the 2nd, temperature sensor 3 and dew point transducer 4, pressure sensor the 2nd, temperature passes
It is internal that the test lead of sensor 3 and dew point transducer 4 is respectively positioned on metal box 1, pressure sensor the 2nd, temperature sensor 3 and dew point sensor
The output of device 4 is connected with the industrial computer outside metal box 1 respectively, and during experiment, it is interior and interior that metal box 1 is located at high/low temperature experimental box
Portion is full of nitrogen.
This device uses metal box 1 to simulate oil-immersed power transformer oil tank, use high/low temperature experimental box simulated environment temperature
Degree change, employing pressure sensor 2 are measured the internal nitrogen pressure of metal box 1 in real time, are used temperature sensor 3 to measure metal in real time
The internal nitrogen temperature of case 1, employing dew point transducer 4 are measured the internal nitrogen dew point of metal box 1 in real time, are used industrial computer to collection
Data record and analyze；This device can be simulated when oil-immersed power transformer inflation stores interior under variation of ambient temperature
Portion's pressure, the change of temperature and humidity (that is, dew point), by the record of data and analysis, thus understand that oil-immersed type power becomes
The Changing Pattern of internal moisture content when storage inflated for a long time by depressor, the shape during storing for oil-immersed power transformer inflation
The improvement of state assessment and inflation storage process and management is provided fundamental basis.
As it is shown in figure 1, in the present embodiment, the test lead of pressure sensor the 2nd, temperature sensor 3 and dew point transducer 4 is equal
It is positioned at the middle and lower part of metal box 1.Test lead is located at the middle and lower part of metal box 1, more uniform experiment sample can be obtained.
In the present embodiment, pressure sensor the 2nd, temperature sensor 3 and dew point transducer 4 all use and are threadably mounted at metal
On case 1 and use thread locking adhesive to carry out encapsulation process.
In the present embodiment, the tool of metal box the 1st, pressure sensor the 2nd, temperature sensor the 3rd, dew point transducer 4 and industrial computer
Body parameter is:
Metal box 1 uses Q235-B Plate Welding to form, steel plate thickness 2mm, a size of 1m × 0.8m × 1m, outer wall brushing
Antirust paint, Experiment Metal case 1 reserve each sensor install screwed hole (see each sensor threads size), reserved location is in sidewall
Bottom.
Pressure sensor 2 uses OMEGA-PX309 pressure sensor 2, model PX309-030A5V, range 0 ~ 30psi,
Precision is ± 0.25%, operating temperature :-40～85 DEG C (in each transformer factory's location environment temperature extreme variation of China
Interval is about between-30～45 DEG C), use 1 4-18 NPT that screw thread is installed and be connected with Experiment Metal case 1.
Temperature sensor 3 uses OMEGA-RTD sensor, and model is PR-21E-3-100-A-M6-0160-M12-1, surveys
Temperature element is PT100-A level, measures scope-50 DEG C～150 DEG C, uses M8 to install screw thread and is connected with Experiment Metal case 1.
Dew point transducer 4 uses Vailsla OY DMT143 sensor, and operation principle is capacitance-resistance method, and measurement scope is-80
To+20 DEG C, operating pressure is less than 5Mpa, and resolution ratio is 0.1 DEG C, and in typical case's range, precision is ± 2 DEG C, meets simulated experiment dew point
Measurement uses, and uses ISO 228-G 1/2 to install screw thread and is connected with Experiment Metal case 1.
Industrial computer is for grinding magnificent 510 industrial computers, and CPU is Intel P43.06, inside saves as DDR2G, CD-ROM drive, 4 serial ports 1 parallel ports,
Hard disk 100G, 2 preposition USB port, join standard key mouse.Pressure gauge, temperature sensor the 3rd, dew point transducer 4 passes through respective data wire
It is connected with industrial computer serial ports.
A kind of oil-immersed power transformer based on above-mentioned oil-immersed power transformer inflation storage analogue experiment installation fills
Gas stores analogue experiment method, comprises the steps:
1) by the quality of solid insulating material in oil-immersed power transformer oil tank divided by oil-immersed power transformer oil tank
Then ratio be multiplied by metal box 1 volume and draw the mass value of the required solid insulating material of experiment by volume, and according to oil immersed type electricity
Each different types of solid insulating material proportioning in power oil tank of transformer, the required solid insulating material of the good experiment of configuration, and
It is dried process；
2) solid insulating material is placed on metal box 1 internal, be filled with after metal box 1 is vacuumized outlet dew point less than-
The drying nitrogen of 40 DEG C (-45 DEG C), keeps metal box 1 malleation (interior pressure is 0.13Mpa) and No leakage；
3) metal box 1 is put into high/low temperature experimental box, by the simulation oil-immersed power transformer inflation of high/low temperature experimental box
High temperature low-temperature circulating change during storage, opens pressure, temperature and the dew point of industrial computer (in real time) record drying nitrogen respectively
Data；
4) by industrial computer, data are analyzed, draw experiment conclusion.
In step 1), ensure that joining of quality-volume accounting and different solid insulating material by accurate calculating
The upper oil-immersed power transformer simulating reality all completely of ratio, analog result is truer, is dried place to solid insulating material
Reason, it is to avoid the moisture in solid insulating material produces impact to experiment；In step 2) in, first vacuumize inflated with nitrogen again, in preventing
The impact on experiment for the moisture in portion's residual air；In step 3), high/low temperature experimental box uses high temperature low-temperature circulating changing pattern
Formula, simulates all temperature regimes may being subject to when long-time inflation stores；The method maximum simulated oil immersion electricity
The time of day that the inflation of power transformer stores, it is ensured that data are true, it is reliable to analyze, and are conducive to understanding oil-immersed power transformer
The Changing Pattern of internal moisture content when long-term inflation stores, the state during storing for oil-immersed power transformer inflation is commented
Estimate and inflate storage process and the improvement of management is provided fundamental basis.
When oil-immersed power transformer inflation stores, with the change of ambient temperature, in oil-immersed power transformer
Moisture in portion's solid insulating material and drying nitrogen can migrate back and forth, causes the change of moisture content in drying nitrogen, extremely
In the case of, it may occur that low temperature dew condensation phenomenon, affect transformer insulated, but the moisture in solid insulating material is difficult to directly
Measure, therefore, in step 4), by calculating, dew point value can be converted to relative hydration value, i.e. become with Determined By Dew Point Measurement
The method of average moisture content in depressor insulating paper, the method is existing method, and associated documents (e.g., DL/T580-2013) are given
Standard step and formula.
It should be appreciated that for those of ordinary skills, can be improved according to the above description or be converted,
And all these modifications and variations all should belong to the protection domain of the utility model claims.
Claims (3)
1. oil-immersed power transformer inflation stores analogue experiment installation, it is characterised in that: include the metal box that seals with
And pressure sensor, temperature sensor and the dew point transducer being arranged on metal box, pressure sensor, temperature sensor and dew
The test lead of point sensor is respectively positioned on inside metal box, and the output of pressure sensor, temperature sensor and dew point transducer divides
Not being connected with the industrial computer outside metal box, during experiment, in metal box is located at high/low temperature experimental box and inside is full of nitrogen.
2. oil-immersed power transformer inflation as claimed in claim 1 stores analogue experiment installation, it is characterised in that: pressure passes
The test lead of sensor, temperature sensor and dew point transducer is respectively positioned on the middle and lower part of metal box.
3. oil-immersed power transformer inflation as claimed in claim 1 stores analogue experiment installation, it is characterised in that: pressure passes
Sensor, temperature sensor and dew point transducer all use and are threadably mounted on metal box and use thread locking adhesive to carry out at sealing
Reason.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620483487.8U CN205679556U (en) | 2016-05-25 | 2016-05-25 | Oil-immersed power transformer inflation stores analogue experiment installation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620483487.8U CN205679556U (en) | 2016-05-25 | 2016-05-25 | Oil-immersed power transformer inflation stores analogue experiment installation |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205679556U true CN205679556U (en) | 2016-11-09 |
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| CN201620483487.8U Active CN205679556U (en) | 2016-05-25 | 2016-05-25 | Oil-immersed power transformer inflation stores analogue experiment installation |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105784770A (en) * | 2016-05-25 | 2016-07-20 | 国家电网公司 | Simulation experiment device for air inflation and storage of oil immersible power transformer and experiment method thereof |
| CN106680434A (en) * | 2017-01-04 | 2017-05-17 | 中国南方电网有限责任公司超高压输电公司检修试验中心 | Device and method for monitoring moisture content of insulating paper during transformer storage and transportation |
| CN106771909A (en) * | 2016-12-08 | 2017-05-31 | 山东电力设备有限公司 | Built-in electrical insulation condition test appraisal procedure under the conditions of a kind of transformer inflation accumulating |
-
2016
- 2016-05-25 CN CN201620483487.8U patent/CN205679556U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105784770A (en) * | 2016-05-25 | 2016-07-20 | 国家电网公司 | Simulation experiment device for air inflation and storage of oil immersible power transformer and experiment method thereof |
| CN106771909A (en) * | 2016-12-08 | 2017-05-31 | 山东电力设备有限公司 | Built-in electrical insulation condition test appraisal procedure under the conditions of a kind of transformer inflation accumulating |
| CN106771909B (en) * | 2016-12-08 | 2019-03-29 | 山东电力设备有限公司 | Built-in electrical insulation condition test appraisal procedure under the conditions of a kind of inflation storage and transportation of transformer |
| CN106680434A (en) * | 2017-01-04 | 2017-05-17 | 中国南方电网有限责任公司超高压输电公司检修试验中心 | Device and method for monitoring moisture content of insulating paper during transformer storage and transportation |
| CN106680434B (en) * | 2017-01-04 | 2023-05-16 | 中国南方电网有限责任公司超高压输电公司检修试验中心 | Device and method for monitoring moisture content of insulating paper during storage and transportation of transformer |
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| GR01 | Patent grant |