CN206657012U - Based on the oil dissolved gas monitoring device field test system for comparing analysis - Google Patents
Based on the oil dissolved gas monitoring device field test system for comparing analysis Download PDFInfo
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- CN206657012U CN206657012U CN201720284154.7U CN201720284154U CN206657012U CN 206657012 U CN206657012 U CN 206657012U CN 201720284154 U CN201720284154 U CN 201720284154U CN 206657012 U CN206657012 U CN 206657012U
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Abstract
The utility model discloses a kind of based on the oil dissolved gas monitoring device field test system for comparing analysis,It is related to power equipment state monitoring and fault diagnosis research,Application field,It is capable of the system of the technical indicator such as field test oil dissolved gas monitoring device measurement accuracy for lacking in industry,Monitoring device performance issue present in engineer applied can not be found in time,And influence accurate measurements,Judge transformer,The state of insulation of high voltage reactor equipment,Even lead to the technical problem of electric power safety production event,It is connected using hydrogen generator with the entrance of calibrating gas automatic gauging instrument,The outlet of calibrating gas automatic gauging instrument is connected with the first interface of portable inspection instrument,The second interface of portable inspection instrument is connected with oil dissolved gas monitoring device,3rd interface of portable inspection instrument is connected with blank oil drum,The scheme that 4th interface of portable inspection instrument is connected with air pump,Overcome place suffered by traditional application model,Communication and the crucial problem of time conditions.
Description
Technical field
It the utility model is related to power equipment state monitoring and fault diagnosis research, application field, and in particular to Yi Zhongji
In the oil dissolved gas monitoring device field test system for comparing analysis.
Background technology
Oil dissolved gas is to reflect transformer, one of the key character parameter of the apparatus insulated performance of high voltage reactor, is transformation
The sign and the form of expression of the apparatus insulated deterioration of device, high voltage reactor.So monitoring transformer, high voltage reactor Oil-filled Electrical Equipments
Middle gas is it can be found that the insulation defect of its internal early stage, specific to take and by timely fault diagnosis and state evaluation
Treatment measures, avoid it from continuing to develop and deteriorate.
As electric power enterprise is increasingly deep in terms of research, application apparatus status monitoring assessment technique, solution gas in oil
Body monitoring device is had been widely used in transformer, high voltage reactor equipment；From the importance of high voltage electric equipment operational reliability
From the point of view of the price ratio of monitoring device, using monitoring technology, economically also there is significant advantage.Monitor the usual of oil dissolved gas
Method is：First, the transformer oil that oil sample collecting unit gathers is de-gassed place through oil circulation into Oil-gas Separation unit
Reason；Secondly, the gas after Oil-gas Separation is separated into each component gas successively through gas detection cell (being typically chromatographic column)；Again
It is secondary, the gas of each component is detected through gas detection cell (being typically detector), is converted to the electricity directly proportional to gas concentration
Signal；Finally, by each component gas concentration information after analog-to-digital conversion through data acquisition unit and field control and processing unit
Transmit into the server at monitoring and warning center, and for the inquiry of equipment operation maintenance personnel, analysis.
Visible color spectrum post, detector are the keys of oil dissolved gas monitoring device, but should in concrete engineering design and scene
During, due to the technical standard disunity of each equipment series, each vendor product quality is uneven, electronic component aging,
A series of reasons such as operation maintenance is insufficient, monitoring sensor mounting location is unreasonable, cause monitoring device to go out in engineer applied
Existing measurement accuracy (repeatability, error) does not reach《Gases Dissolved in Transformer Oil on-Line Monitor Device selects directive/guide》(DL/Z
249) requirement, even result in the false alarm of monitoring and warning, fail to report alert serious consequence.Being capable of scene however, lacking in industry
The system for examining the technical indicators such as oil dissolved gas monitoring device measurement accuracy (repeatability, error), it is impossible to find monitoring dress in time
The performance issue present in engineer applied is put, and influences accurate measurements, judge transformer, the insulation shape of high voltage reactor equipment
State, or even lead to electric power safety production event.Power-generating enterprise fails to break away from transformer (reactor) configuration one always
The using priciple of on-Line Monitor Device is covered, and then causes device to be in actual applications fixedly installed in substation field, can not
Censorship, so be difficult to find because of device aging and derived from measurement accuracy problem, it is difficult to measured value is directly used in assessment equipment
State, and accurate measurements, early warning transformer, the state of insulation of high voltage reactor equipment are influenceed, or even lead to electric power safety production
Event.
The content of the invention
The utility model provides a kind of oil dissolved gas monitoring device field test system based on comparison analysis, to solve
Lack the system for being capable of the technical indicator such as field test oil dissolved gas monitoring device measurement accuracy (repeatability, error) in industry,
Monitoring device performance issue present in engineer applied can not be found in time, and is influenceed accurate measurements, judged transformer, high pressure
The state of insulation of reactor arrangement, or even lead to the technical problem of electric power safety production event.
To solve the above problems, the utility model adopts the following technical scheme that realization：
A kind of oil dissolved gas monitoring device field test system based on comparison analysis, including hydrogen generator, the hydrogen
Gas generator is connected with the entrance of calibrating gas automatic gauging instrument, outlet and the portable inspection of the calibrating gas automatic gauging instrument
The first interface connection of instrument is tested, the second interface of the portable inspection instrument is connected with oil dissolved gas monitoring device, described portable
3rd interface of formula check meter is connected with blank oil drum, and the 4th interface of the portable inspection instrument is connected with air pump.
Preferably, the hydrogen generator is connected by tracheae with the entrance of the calibrating gas automatic gauging instrument；
The outlet of the calibrating gas automatic gauging instrument is connected by tracheae with the first interface of the portable inspection instrument.
Preferably, the portable inspection instrument includes the portable check meter of high concentration, the portable check meter of middle concentration, low concentration just
Take check meter.
Preferably, the hydrogen generator output pressure scope is 0~0.6MPa, and output flow range is 0~300mL/
Min, output pressure deviation are less than 0.001MPa, and output gas purity is 99.999%, peak power output 150W.
Preferably, the calibrating gas built in the calibrating gas automatic gauging instrument is mainly carbon monoxide, carbon dioxide, first
Alkane, ethane, ethene, acetylene, hydrogen.
Preferably, the air pump output pressure scope is 0 to 0.4MPa, and output flow range is 0~2000mL/min,
Output pressure deviation is less than 0.003MPa, and operating noise is less than 40dB, peak power output 125W.
Preferably, the blank oil drum is built with #25 transformer oil.
The utility model has the advantages that：
(1) crucial problem in place, communication and time conditions suffered by traditional application model is thoroughly overcome, it is real in a creative way
Show the technical indicators such as flexible inspection, the measurement accuracy (repeatability, error) for judging oil dissolved gas monitoring device, improve electric power
The maneuverability of equipment control response, enriches the means for ensureing power grid construction and equipment safety, realizes power generation apoplexy
The synthesis of danger, efficiency and cost is optimal.
(2) measurement reproducibility, measurement error, minimum inspection of field test oil dissolved gas monitoring device and sensor are realized
The technical indicators such as rising limit, broken away from monitoring device be fixedly mounted on after substation field can not censorship predicament, reached accurate
It was found that the reason such as chromatographic column and detector aging and cause monitoring sensitivity decline, the linearity drift the problems such as purpose.
(3) in-site modeling for realizing senior middle school's low concentration is examined, and different model monitoring device, oil gas can not be directed to by having reversed
Separation and gas detection cell carry out the predicament of the linear Inspection of gamut, improve the lean water of monitoring and warning management
It is flat.
(4) assay method of mark oil dissolved gas ostwald coefficient is realized, is avoided because of oil cylinder volume, temperature
Spend, with the mark oil relative deviation caused by the deviations such as oil mass and precision, gas amount and precision, oil dissolved gas repeatability will be marked
Relative standard deviation (Relative Standard Deviation, RSD) is controlled within 10%.
Brief description of the drawings
Fig. 1 is structural representation of the present utility model；
Fig. 2 is field test connection diagram of the present utility model.
Embodiment
To make the purpose of this utility model, technical scheme and advantage clearer, implement below in conjunction with the utility model
Accompanying drawing in example, the technical scheme in the embodiment of the utility model is clearly and completely described, it is clear that described reality
It is the utility model part of the embodiment to apply example, rather than whole embodiments.Generally it is described and illustrated herein in the accompanying drawings
The detailed description of embodiment of the present utility model is not intended to limit claimed the scope of the utility model, but only table
Show selected embodiment of the present utility model.Based on the embodiment in the utility model, those of ordinary skill in the art are not doing
Go out under the premise of creative work the every other embodiment obtained, belong to the scope of the utility model protection.
Fig. 1 is structural representation of the present utility model, as shown in figure 1, a kind of based on the oil dissolved gas monitoring for comparing analysis
Device field test system, including hydrogen generator, calibrating gas automatic gauging instrument, portable inspection instrument, air pump, blank oil
Bucket, wherein, portable inspection instrument includes the portable check meter of high concentration, the portable check meter of middle concentration, the portable check meter of low concentration.
As shown in figure 1, hydrogen generator by tracheae connects calibrating gas automatic gauging instrument before examining at the scene, and it is used for
Gas is provided.Calibrating gas automatic gauging instrument examine at the scene before connected respectively by tracheae high concentration portable inspection instrument, in
Concentration portable inspection instrument, low concentration portable inspection instrument, the required gas of mark oil is configured for providing.In addition, calibrating gas
The expectation concentration of oil dissolved gas is marked in automatic gauging instrument configuration needed for, calculates its internal all kinds of gas bottle respectively to portable
The air demand of formula check meter.Air pump connects high concentration portable inspection instrument, middle concentration portable inspection instrument, low concentration just respectively
Take formula check meter, for provide oiling, oil extraction, gas injection, exhaust needed for pressure.Blank oil drum passes through tracheae before examining at the scene
High concentration portable inspection instrument, middle concentration portable inspection instrument, low concentration portable inspection instrument are connected respectively, and are matched somebody with somebody for offer
Put the required blank oil of mark oil.High concentration portable inspection instrument, middle concentration portable inspection instrument, low concentration portable inspection instrument exist
Oil dissolved gas monitoring device is successively connected by oil pipe during field test, and for providing the mark needed for on-the-spot testing analytical control
Oil.
The output pressure scope that hydrogen generator conveys hydrogen to calibrating gas automatic gauging instrument is 0 to 0.6MPa, output
Range of flow is 0 to 300mL/min, and output pressure deviation is less than 0.001MPa, and output gas purity reaches 99.999%, maximum
Power reaches 150W.Gas built in calibrating gas automatic gauging instrument includes carbon monoxide, carbon dioxide, methane, ethane, second
Alkene, acetylene, hydrogen.Air pump to take formula check meter provide cylinder pressure output pressure scope be 0 to 0.4MPa, output flow
Scope is 0 to 2000mL/min, and output pressure deviation is less than 0.003MPa, and operating noise is less than 40dB, and peak power reaches
125W.High concentration portable inspection instrument, middle concentration portable inspection instrument, the oil cylinder working-pressure scope in low concentration portable inspection instrument
It is 0 to 0.4MPa, it is 0 to 5000mL that oily scope is marked in configuration, and configuration mark accuracy deviation is less than 10%, and peak power reaches
1500W。
In use, by #25 transformer oil, magnetic agitation vacuumizes 2 hours at a constant temperature, and vacuum is less than 10Pa, Ran Houting
Only stir, keep vacuum diel to remove dissolved gas therein, keep vacuum stand-by treated blank oil；Then will
In oil cylinder in blank oil vacuum suction portable inspection instrument, it is placed in constant temperature by piston injector balanced body slidably
Product change, set normal mixture body is taken to inject in portable inspection instrument using calibrating gas automatic gauging instrument, and through magnetic
Power stirring is until gas all dissolves.Thus in accordance withCalculate the original concentration of oil dissolved gas, wherein Xoil
It is the original concentration of oil dissolved gas, VgasIt is the initial volume of oil dissolved gas, VcylinderIt is that check meter inner cylinder is hollow
The volume of white oil；
Then, according to formula Xoi=KiCgiIt is and molten in a certain concrete component oil of application ostwald coefficient participation calculating
Solve gas i concentration, wherein XoiIt is a certain concrete component oil dissolved gas i concentration, KiIt is the oersted of the component gas
Grindelwald coefficient, CgiIt is the concentration of the component gas in gas phase in equilibrium conditions, and ostwald coefficient (K) is fixed
Justice is：K=balance when liquid phase in gas concentration/balance when gas phase in gas concentration, it is molten in a certain concrete component oil so as to complete
The concentration for solving gas i calculates.
Operation principle of the present utility model is further elaborated using certain transformer station as case below, as shown in Fig. 2 pressing
Realize and detect according to the following steps：
(1) need to examine 220kV Substation No.1 main transformer oil dissolved gas monitoring devices measurement accuracy (repeatability, error),
Whether the technical indicators such as minimum detectability reach the index of engineering design and meet the requirement of field application, therefore, monitoring and warning
Installed a kind of, applied to gas in No. 1 main transformer oil based on the oil dissolved gas monitoring device field test system for comparing analysis at center
Near body monitoring device, and examine the performance of monitoring device., can be according to monitoring device sensor in actual product control work
Quantity and site environment select specific installation number, position, but should not be too far with the distance of Gas in Oil of Transformer monitoring device.
(2) field device connects, and the standard oil (high, medium and low concentration) of three sets of check meters is respectively configured in laboratory first,
And the concentration of each component gas in standard oil is examined and determine, calculated with laboratory chromatographs.Secondly, in substation field with monitoring device
The high, medium and low concentration standard oil in check meter is measured, compares on-line monitoring and the result of offline inspection, and with monitoring device
Measurement accuracy judges whether the technical indicator of monitoring device reaches requirement.Judgment basis is《Gases Dissolved in Transformer Oil is online
Monitoring device selects directive/guide》(DL/Z 249) with《Transformer on-Line Monitor Device inspection specification part 2：In transformer oil
Dissolved gas on-Line Monitor Device》(DLT1432.2).
(3) checked oneself before examining, first check for plant running situation, judging the monitoring function of oil dissolved gas concentration just
Often；Secondly, remotely monitor situation is checked, the remote-monitoring function of monitoring main website platform is normal, and can data storage.
(4) functional check, hardware capability is first checked for, judges whether the hardware that monitoring device should possess is normal.Main inspection
Looking into content includes：1) flowline is entered, whether flange connection fastens reliably；2) can fuel tap reliably close and open；3) signal refers to
Show that lamp instruction is normal；4) whether the wiring of power supply and communication cable is firm, whether there is loose phenomenon；5) whether nebulizer gas pressure is normal；
6) whether system gas circuit, oil circuit leak detection are normal；If 7) there is wireless communication module, it need to check whether working condition is normal.Secondly, inspection
Look into software function.The main scope of examination includes：1) function for monitoring inspection.Operate monitoring device program, check its data acquisition,
Whether the major functions such as data diagnosis, data record and preservation are normal.2) self-recovering function is tested.Simulate in monitoring device power supply
After situations such as disconnected, monitoring device should be able to recover normal operation automatically.
(5) communication function is checked, whether test site device is normal to the passage for monitoring main website platform, and data transfer is without prolonging
When, packet loss phenomena such as.
(6) inspection technology index, the testing result by research and application device to portable tester Plays oil sample, sentences
Whether the measurement accuracy of disconnected monitoring device meets《Gases Dissolved in Transformer Oil on-Line Monitor Device selects directive/guide》(DL/Z
249-2012) with《Transformer on-Line Monitor Device inspection specification part 2：Gases Dissolved in Transformer Oil on-line monitoring dress
Put》(DLT1432.2), and field inspection record is write.
(7) performance for the inspection monitoring device for examining, analyzing oil dissolved gas monitoring device respectively with upper type is used, and is compared
To analyzing, demonstrating whether the technical indicators such as oil dissolved gas monitoring device measurement accuracy (repeatability, error), minimum detectability reach
To engineering design index and meet the requirement of field application.Just because of flexible Application is a kind of based on gas in the oil for comparing analysis
Body monitoring device field test system, it is able to fill up transformer, the scene inspection of high voltage reactor oil dissolved gas monitoring device shortage
The technology short slab of means is tested, improves the maneuverability of power equipment product control response, enriches and ensures power grid construction and equipment peace
Full means.Preferred embodiment of the present utility model is these are only, it is all in this use not to limit the utility model
Within new spirit and principle, any modification, equivalent substitution and improvements made etc., the protection of utility model should be included in
Within the scope of.
Claims (7)
- It is 1. a kind of based on the oil dissolved gas monitoring device field test system for comparing analysis, it is characterised in that：Including hydrogen generator, the hydrogen generator is connected with the entrance of calibrating gas automatic gauging instrument, the calibrating gas The outlet of automatic gauging instrument is connected with the first interface of portable inspection instrument, in the second interface and oil of the portable inspection instrument Gas controlling device is connected, and the 3rd interface of the portable inspection instrument is connected with blank oil drum, the portable inspection instrument 4th interface is connected with air pump.
- 2. system according to claim 1, it is characterised in that：The hydrogen generator is connected by tracheae with the entrance of the calibrating gas automatic gauging instrument；The outlet of the calibrating gas automatic gauging instrument is connected by tracheae with the first interface of the portable inspection instrument.
- 3. system according to claim 1, it is characterised in that：The portable inspection instrument includes the portable check meter of high concentration, the portable check meter of middle concentration, the portable check meter of low concentration.
- 4. system according to claim 1, it is characterised in that：The hydrogen generator output pressure scope be 0 ~ 0.6MPa, output flow range are 0 ~ 300mL/min, and output pressure deviation is less than 0.001MPa, and output gas purity is 99.999%, peak power output 150W.
- 5. system according to claim 1, it is characterised in that：Calibrating gas built in the calibrating gas automatic gauging instrument is mainly carbon monoxide, carbon dioxide, methane, ethane, second Alkene, acetylene, hydrogen.
- 6. system according to claim 1, it is characterised in that：The air pump output pressure scope is 0 to 0.4MPa, defeated Outflow scope is 0 ~ 2000mL/min, and output pressure deviation is less than 0.003MPa, and operating noise is less than 40dB, maximum work output Rate is 125W.
- 7. system according to claim 1, it is characterised in that：The blank oil drum is built with #25 transformer oil.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720284154.7U CN206657012U (en) | 2017-03-22 | 2017-03-22 | Based on the oil dissolved gas monitoring device field test system for comparing analysis |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201720284154.7U CN206657012U (en) | 2017-03-22 | 2017-03-22 | Based on the oil dissolved gas monitoring device field test system for comparing analysis |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108333026A (en) * | 2018-04-03 | 2018-07-27 | 南京天成环境科技工程有限公司 | A kind of modular portable air distributing device and its air distributing method compared for volatile organic gases online monitoring instruments |
| CN109001339A (en) * | 2018-09-26 | 2018-12-14 | 云南电网有限责任公司电力科学研究院 | The segmentation verification of transformer oil on-line chromatograph monitor device and Fault Locating Method |
| CN110794266A (en) * | 2019-10-22 | 2020-02-14 | 南方电网科学研究院有限责任公司 | Degradation testing system and method for transformer oil |
-
2017
- 2017-03-22 CN CN201720284154.7U patent/CN206657012U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108333026A (en) * | 2018-04-03 | 2018-07-27 | 南京天成环境科技工程有限公司 | A kind of modular portable air distributing device and its air distributing method compared for volatile organic gases online monitoring instruments |
| CN109001339A (en) * | 2018-09-26 | 2018-12-14 | 云南电网有限责任公司电力科学研究院 | The segmentation verification of transformer oil on-line chromatograph monitor device and Fault Locating Method |
| CN110794266A (en) * | 2019-10-22 | 2020-02-14 | 南方电网科学研究院有限责任公司 | Degradation testing system and method for transformer oil |
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