CN205003132U - Dissolved gas on -line monitoring device in high accuracy oil - Google Patents
Dissolved gas on -line monitoring device in high accuracy oil Download PDFInfo
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- CN205003132U CN205003132U CN201520661117.4U CN201520661117U CN205003132U CN 205003132 U CN205003132 U CN 205003132U CN 201520661117 U CN201520661117 U CN 201520661117U CN 205003132 U CN205003132 U CN 205003132U
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Abstract
The utility model discloses a dissolved gas on -line monitoring device in high accuracy oil, this system include automatic dynamic calibration unit, oil circulation mechanism, oil -gas separation unit, gaseous detecting element and multistage temperature automatically regulated unit, the gaseous detecting element of automatic dynamic calibration unit connection implements automatic dynamic calibration to detecting, the oil that oil circulation mechanism controls was monitored carries out the circulation flow, delivers to the oil -gas separation unit with oil, gas outgased during the oil -gas separation unit carried out oil to be sent to gaseous detecting element with gas and carry out the gas component detection, the multistage temperature automatically regulated unit control oil temperature of being monitored. This system is accurate monitoring H2, CO, CO2, CH4, C2H2, C2H4, C2H6, O2 and N2 in succession. They install treat the supervise the transformer on to guarantee the latent defect of stage discovery in early days. Thereby reduce non - scheduled outage and accident hazard.
Description
Technical field
The utility model relates to power equipment state monitoring and fault diagnosis technology field, specifically relates to a kind of on-Line Monitor Device for transformer.
Background technology
High-power transformer is as the major equipment of electrical production and conveying, and be one of nucleus equipment of whole transformer substation system, its security performance is most important.Due to all many-sided reasons, the pernicious fault of equipment happens occasionally, once there is catastrophic failure, necessary interruption maintenance, has had a strong impact on the safe and stable operation of electrical network, will cause heavy economic losses.Therefore, for guaranteeing the safe operation of high-power transformer, the prophylactic repair of high-power transformer will substitute by state-maintenance, this is also the developing direction of transformer maintenance mode from now on.
Transformer oil chromatographic on-Line Monitor Device can be carried out state to high-power transformer and be implemented on-line monitoring, by analyzing characteristic gas concentration in oil, grasp the running status of equipment at any time, Timeliness coverage and its internal fault of diagnosis, and make up the shortcoming that laboratory chromatographic analytical approach can not monitor rapidly in time, for the running status grasping transformer in real time provides significant data, thus improving the management level of equipment, is therefore the important means ensureing transformer and network system safety and economic operation.
Transformer oil chromatographic on-Line Monitor Device can increase substantially the status monitoring level of high-power transformer, due to the significance of oil dissolved gas on-line monitoring, all this be done to excessive quantifier elimination development both at home and abroad after promoting.Early stage technology is generally detect single component hydrogen and survey combustible gas total amount.Use gas sensor to make sensor, this system can only play alarm function, can not clear failure situation, as the initial stage alarm of fault, is not that truly chromatogram is online.Along with the development of chromatographic technique and gas-oil separation technology, occurred the on-line chromatographic analysis technology can measuring 4-9 kind component concentration, gas-oil separation adopts film osmosis process, is then separated by chromatographic column, thermal conductance or hydrogen flame detector analysis.The defects such as it is long that this technology exists analytical cycle, and errors of analytical results is large.
Along with the fast development of power economy, give very big attention to the safe operation of power equipment both at home and abroad, on-line monitoring is had higher requirement.Development trend and the direction of this technology current are:
1. can detect whole nine kinds of components in the transformer oil specified in GB, data and testing laboratory's analysis result basically identical;
2. there is intelligent expert diagnostic function, can to various data analysis and judgement, monitoring inside transformer running status and fault progression trend;
3. analytical cycle is short, can detect once in several hours;
4. there is remote transmission data and calibration function;
5. stable and reliable for performance.
Utility model content
For prior art problem, the utility model provides test accurate a kind of high precision oil dissolved gas on-Line Monitor Device.
The technical solution of the utility model is as follows:
A kind of high precision oil dissolved gas on-Line Monitor Device, is characterized in that: comprise inlet valve, oil return valve, automatic dynamic alignment unit, oily cycling mechanism, gas-oil separation unit, gas detection cell, multi-step temperature automatic adjustment unit and system host; Described automatic dynamic alignment unit connects gas detection cell, carries out automatic dynamic calibration to detection; The insulating oil that described oily cycling mechanism controls monitored power transformer circulates, and oil is delivered to gas-oil separation unit; It is degassed that described gas-oil separation unit carries out oil dissolved gas, and gas is sent to gas detection cell and carries out gas composition detection; Described multi-step temperature automatic adjustment unit controls the oil temperature of the insulating oil of monitored power transformer.Described automatic dynamic alignment unit comprises gas bottle, and gas is bottled is loaded with calibration standard mixture, comprises H
2, CO, CO
2, CH
4, C
2h
2, C
2h
4, C
2h
6, O
2and N
2; The gas utilizing the insulating oil of the standard mixture of gas bottle to power transformer to separate carries out gas composition monitoring.
Described a kind of high precision oil dissolved gas on-Line Monitor Device also comprises water content detection unit, and water content detection unit is located between oily cycling mechanism and gas-oil separation unit.Described water content detection unit comprises trace moisture sensor.
The component concentration that described automatic dynamic alignment unit can be arranged according to user carries out calibrating various calibrating gas component concentration, the various calibrating gas component concentration of periodic calibration can be carried out according to the requirement of user, and the cycle of dynamic calibration can be selected according to actual monitoring result.
Described multi-step temperature automatic adjustment unit controls monitored oil temperature and is in 35 ± 0.1 DEG C of scopes.Multi-step temperature automatic adjustment unit is different from the varitrol of single-stage temperature, and it have employed at least 3 temperature elevating member and at least 3 cooling element, jointly completes the accurate control of temperature.
Described oily cycling mechanism comprises electromagnetic pump and flow control assembly.
Described oily cycling mechanism controls insulating oil and flows into monitoring device from transformer and be 30ml/min from the speed that monitoring device flows back to transformer.
Described gas-oil separation unit employs teflon tube and carries out gas-oil separation.This kind of material effectively can permeate the gas in insulating oil.
Described gas-oil separation unit also comprises bubble capture system, for absorbing the gas do not used in observation process, avoids these gases to recharge into transformer.
Described gas detection cell comprises plasma detecting device.Described plasma detecting device is made up of ionization chamber and arc chamber, has narrow road to communicate between two Room.When on the high-field electrode of two in arc chamber in addition after appropriate high-tension electricity, will produce electric discharge between two electrodes, gas to be measured various component will be ionized and form various ion, the discharge level of detection ion, thus obtain the Precise levels of various component.
Relative to prior art, the utility model device has following beneficial effect:
For Wang Nei transformer station emphasis transformer, after a kind of monitoring device of the present utility model is installed, relative to traditional off-line monitoring, by the data of high-precision on-Line Monitor Device teletransmission, we can grasp characteristic gas concentration in online monitoring analysis oil at any time, can grasp the running status of equipment at any time; The all failure gas of system energy precise monitoring, are installed to them on transformer to be monitored, to ensure that the stage finds potential defect in early days.Thus reduce unplanned outage and accident hazard.Concrete beneficial effect comprises following aspect:
(1) change transformer Intensive care technology, thoroughly broken away from and only frequently to sample the constraint following the tracks of transformer exception, the O&M cost of equipment can have been significantly reduced.
(2) achieve the Real-Time Monitoring of nine kinds of characteristic gas, broken the minimum detectability of traditional monitoring device and detected kind limitation, directly having expanded the analysis foundation of equipment state diagnosis.
(3) started the new model of monitoring device automatic dynamic calibration, avoided the passive situation of device failure in a long time, improve the reliability of device rig-site utilization, continuation.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of a kind of high precision oil dissolved gas on-Line Monitor Device of the present utility model
Embodiment
Below in conjunction with embodiment, the utility model is described further:
A kind of high precision oil dissolved gas on-Line Monitor Device, comprises inlet valve, oil return valve, automatic dynamic alignment unit, oily cycling mechanism, gas-oil separation unit, gas detection cell, multi-step temperature automatic adjustment unit and system host; Described automatic dynamic alignment unit connects gas detection cell, carries out automatic dynamic calibration to detection; The insulating oil that described oily cycling mechanism controls monitored power transformer circulates, and oil is delivered to gas-oil separation unit; It is degassed that described gas-oil separation unit carries out oil dissolved gas, and gas is sent to gas detection cell and carries out gas composition detection; Described multi-step temperature automatic adjustment unit controls the oil temperature of the insulating oil of monitored power transformer.Described automatic dynamic alignment unit comprises gas bottle, and gas is bottled is loaded with calibration standard mixture, comprises H
2, CO, CO
2, CH
4, C
2h
2, C
2h
4, C
2h
6, O
2and N
2; The gas utilizing the insulating oil of the standard mixture of gas bottle to power transformer to separate carries out gas composition monitoring.
Described a kind of high precision oil dissolved gas on-Line Monitor Device also comprises water content detection unit, and water content detection unit is located between oily cycling mechanism and gas-oil separation unit.Described water content detection unit comprises trace moisture sensor.
The component concentration that described automatic dynamic alignment unit can be arranged according to user carries out calibrating various calibrating gas component concentration, the various calibrating gas component concentration of periodic calibration can be carried out according to the requirement of user, and the cycle of dynamic calibration can be selected according to actual monitoring result.
Described multi-step temperature automatic adjustment unit controls monitored oil temperature and is in 35 ± 0.1 DEG C of scopes.Multi-step temperature automatic adjustment unit is different from the varitrol of single-stage temperature, and it have employed at least 3 temperature elevating member and at least 3 cooling element, jointly completes the accurate control of temperature.
Described oily cycling mechanism comprises electromagnetic pump and flow control assembly.
Described oily cycling mechanism controls insulating oil and flows into monitoring device from transformer and be 30ml/min from the speed that monitoring device flows back to transformer.
Described gas-oil separation unit employs teflon tube and carries out gas-oil separation.This kind of material effectively can permeate the gas in insulating oil.
Described gas-oil separation unit also comprises bubble capture system, for absorbing the gas do not used in observation process, avoids these gases to recharge into transformer.
Described gas detection cell comprises plasma detecting device.Described plasma detecting device is made up of ionization chamber and arc chamber, has narrow road to communicate between two Room.When on the high-field electrode of two in arc chamber in addition after appropriate high-tension electricity, will produce electric discharge between two electrodes, gas to be measured various component will be ionized and form various ion, the discharge level of detection ion, thus obtain the Precise levels of various component.
The gordian technique of the utility model device is pin-point accuracy and pinpoint accuracy, reach this object, its detecting unit and the monitored insulating oil circulated, should operate in a stable temperature environment, temperature is more stable, Detection results is unreasonable to be thought, therefore, native system devises multi-step temperature automatic adjustment unit, the temperature including at least 3 grades controls, establish one independently, stationary temperature environment, remain at+35 DEG C ± 0.1 DEG C, it is not affected by the external environment, no matter environment temperature is-50 DEG C or+55 DEG C, also do not affect by oil temperature, no matter oil temperature is-40 DEG C or+120 DEG C,
The utility model device have employed automatic dynamic collimation technique, gas bottle in equipment is loaded with certified calibration gas mixture body, this gas can be traced to the source to MorganSchaffer (J. P. Morgan & Co.) the oily testing laboratory of NIST and IEC certification, system uses these gases to carry out automatic calibration automatically, and calibration process is dynamic, be can adjust the difference of testing standard according to the repeatability of test and operator.
Device using method of the present utility model is as follows:
Device of the present utility model is connected to transformer by oil inlet pipe and scavenge pipe, and intrasystem inlet valve and oil return valve are in open mode, and intrasystem oily cycling mechanism controls transformer oil and flows through system with constant speed; Intrasystem multi-step temperature automatic adjustment unit makes the transformer oil temperature passed through be basicly stable numerical value, also ensures that each components and parts of system all work under stationary temperature environment simultaneously, to ensure the accuracy of monitoring; When insulating oil is by the gas-oil separation unit of system, oil dissolved gas can be infiltrated, and is sent to gas detection cell and carries out gas composition detection, and unnecessary gas can be captured; Meanwhile, the water content detection unit that system has, detects water content in oil content; All Monitoring Data, can be stored in the main frame of equipment, can download these data with personal computer, for user provides the online monitoring data of Gas in Oil of Transformer.
Device of the present utility model can continuous precise monitoring H
2, CO, CO
2, CH
4, C
2h
2, C
2h
4, C
2h
6, O
2and N
2.They are installed on transformer to be monitored, to ensure that the stage finds potential defect in early days.Thus reduce unplanned outage and accident hazard.
The utility model system can detect outside seven kinds of failure gas, can also detect O
2, N
2, for producers' analyzing and diagnosing.Main sensing range is as follows:
Following table shows the contrast of the utility model a kind of high precision oil dissolved gas on-Line Monitor Device and off-line chromatographic data.Table 1 is certain 220kV Substation No.1 main-transformer, in January, 2014 to April part off-line chromatographic data, table 2 is the same transformer, uses the on-line chromatograph data of the utility model system on April 13rd, 2014 to April 17
Table 1 off-line chromatographic data
The on-line chromatograph data of table 2 the utility model system
The on-line chromatograph data of continued 2 the utility model system
Compare according to above-mentioned table 1 and table 2, can draw and analyze conclusion as follows:
1) by the data of on-Line Monitor Device, we can grasp characteristic gas concentration in online monitoring analysis oil at any time, the running status of equipment can be grasped at any time, this is relative to traditional offline inspection, lab analysis, possess obvious real-time and economical advantage, the data in before traditional offline inspection laboratory are very few, and this is unfavorable for the running status grasping transformer in time;
2) above-mentioned digital proof, system contrasts more identical with testing laboratory chromatographic data, and data redundancy is better, and reproducible is the whether trustworthy essential characteristic of system;
3) monitoring range of the utility model monitoring device is wide, and little to the resolution of gas composition, finds the state change of voltage transformer system fast, accomplishes to penetrate deeply into all things.
Claims (6)
1. a high precision oil dissolved gas on-Line Monitor Device, is characterized in that: comprise inlet valve, oil return valve, automatic dynamic alignment unit, oily cycling mechanism, gas-oil separation unit, gas detection cell, multi-step temperature automatic adjustment unit and system host; Described automatic dynamic alignment unit connects gas detection cell, carries out automatic dynamic calibration to detection; The insulating oil that described oily cycling mechanism controls monitored power transformer circulates, and oil is delivered to gas-oil separation unit; It is degassed that described gas-oil separation unit carries out oil dissolved gas, and gas is sent to gas detection cell and carries out gas composition detection; Described multi-step temperature automatic adjustment unit controls the oil temperature of the insulating oil of monitored power transformer; Described automatic dynamic alignment unit comprises gas bottle, and gas is bottled is loaded with calibration standard mixture, comprises H
2, CO, CO
2, CH
4, C
2h
2, C
2h
4, C
2h
6, O
2and N
2; The gas utilizing the insulating oil of the standard mixture of gas bottle to power transformer to separate carries out gas composition monitoring.
2. a kind of high precision oil dissolved gas on-Line Monitor Device as claimed in claim 1, it is characterized in that: also comprise water content detection unit, water content detection unit is located between oily cycling mechanism and gas-oil separation unit; Described water content detection unit comprises trace moisture sensor.
3. a kind of high precision oil dissolved gas on-Line Monitor Device as claimed in claim 1, is characterized in that: described oily cycling mechanism comprises electromagnetic pump and flow control assembly.
4. a kind of high precision oil dissolved gas on-Line Monitor Device as claimed in claim 1, is characterized in that: described gas-oil separation unit employs teflon tube and carries out gas-oil separation.
5. a kind of high precision oil dissolved gas on-Line Monitor Device as claimed in claim 1, it is characterized in that: described gas-oil separation unit also comprises bubble capture system, for absorbing the gas do not used in observation process, these gases are avoided to recharge into transformer.
6. a kind of high precision oil dissolved gas on-Line Monitor Device as claimed in claim 1, is characterized in that: described gas detection cell comprises plasma detecting device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520661117.4U CN205003132U (en) | 2015-08-28 | 2015-08-28 | Dissolved gas on -line monitoring device in high accuracy oil |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520661117.4U CN205003132U (en) | 2015-08-28 | 2015-08-28 | Dissolved gas on -line monitoring device in high accuracy oil |
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| Publication Number | Publication Date |
|---|---|
| CN205003132U true CN205003132U (en) | 2016-01-27 |
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| CN201520661117.4U Active CN205003132U (en) | 2015-08-28 | 2015-08-28 | Dissolved gas on -line monitoring device in high accuracy oil |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107064468A (en) * | 2017-03-22 | 2017-08-18 | 广西电网有限责任公司电力科学研究院 | Based on the oil dissolved gas monitoring device field test method for comparing analysis |
| CN107167450A (en) * | 2017-07-17 | 2017-09-15 | 上海禾楷电气科技有限公司 | Gas in Oil of Transformer and micro- water on-line detecting system |
| CN107367584A (en) * | 2017-08-08 | 2017-11-21 | 大唐东北电力试验研究所有限公司 | Gases Dissolved in Transformer Oil on-line monitoring system |
| CN107436328A (en) * | 2016-05-25 | 2017-12-05 | 上海金艺检测技术有限公司 | The calibration method of transformer insulation oil on-line chromatograph analyzer |
| WO2018103639A1 (en) * | 2016-12-06 | 2018-06-14 | 曾宁 | Network-based environment monitoring system, method, and computer readable storage medium |
| CN113567625A (en) * | 2021-07-22 | 2021-10-29 | 国电南瑞科技股份有限公司 | Automatic free gas measuring device for oil-immersed transformer |
-
2015
- 2015-08-28 CN CN201520661117.4U patent/CN205003132U/en active Active
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107436328A (en) * | 2016-05-25 | 2017-12-05 | 上海金艺检测技术有限公司 | The calibration method of transformer insulation oil on-line chromatograph analyzer |
| CN107436328B (en) * | 2016-05-25 | 2022-07-01 | 上海金艺检测技术有限公司 | Calibration method of transformer insulating oil online chromatographic analyzer |
| WO2018103639A1 (en) * | 2016-12-06 | 2018-06-14 | 曾宁 | Network-based environment monitoring system, method, and computer readable storage medium |
| CN107064468A (en) * | 2017-03-22 | 2017-08-18 | 广西电网有限责任公司电力科学研究院 | Based on the oil dissolved gas monitoring device field test method for comparing analysis |
| CN107167450A (en) * | 2017-07-17 | 2017-09-15 | 上海禾楷电气科技有限公司 | Gas in Oil of Transformer and micro- water on-line detecting system |
| CN107367584A (en) * | 2017-08-08 | 2017-11-21 | 大唐东北电力试验研究所有限公司 | Gases Dissolved in Transformer Oil on-line monitoring system |
| CN113567625A (en) * | 2021-07-22 | 2021-10-29 | 国电南瑞科技股份有限公司 | Automatic free gas measuring device for oil-immersed transformer |
| CN113567625B (en) * | 2021-07-22 | 2024-05-24 | 国电南瑞科技股份有限公司 | Automatic measuring device for free gas of oil immersed transformer |
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