CN104237153A - Online rapid detection system for gas content of transformer oil - Google Patents
Online rapid detection system for gas content of transformer oil Download PDFInfo
- Publication number
- CN104237153A CN104237153A CN201310224837.XA CN201310224837A CN104237153A CN 104237153 A CN104237153 A CN 104237153A CN 201310224837 A CN201310224837 A CN 201310224837A CN 104237153 A CN104237153 A CN 104237153A
- Authority
- CN
- China
- Prior art keywords
- gas
- module
- oil
- detection system
- temperature
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Landscapes
- Investigating Or Analysing Materials By Optical Means (AREA)
Abstract
The invention discloses an online rapid detection system for the gas content of transformer oil. The system comprises an ARM equipped processing operation circuit, an infrared spectrum generator, a spectrum recognition module, an oil-gas separation module, an A/D conversion module, and a power module. The infrared spectrum generator, the spectrum recognition module, and the oil-gas separation module are all arranged in a constant temperature system. The infrared spectrum generator and the oil-gas separation module are respectively connected to the spectrum recognition module, which is connected to the A/D conversion module. And the A/D conversion module is in connection with the ARM equipped processing operation circuit. The system provided by the invention can rapidly improve the gas solubility calculation speed to realize more efficient online monitoring.
Description
Technical field
The present invention relates to technical field of electric equipment, specifically a kind of gas content in transformer oil on-line quick detection system.
Background technology
Oil dissolved gas monitoring technology, by to the measurement of Dissolved Gases in Insulating Oil and analysis, achieve the on-line monitoring to high-power transformer internal operation state, can Timeliness coverage and diagnosis its internal fault, grasping the operation conditions of equipment at any time, is be acknowledged as most efficient pressure swing device monitoring, diagnosing means at present.The subject matter that the Real-Time Monitoring realizing transformer by these means will solve has: 1, oil dissolved gas is separated fast, thoroughly.2, the Obtaining Accurate of each concentration of component data of gas.Sample time is long, or degassed not thorough, all can affect the accuracy of Monitoring Data.This device, based on vacuum outgas principle, can realize being thoroughly separated fast oil dissolved gas, and each component gas absorbs the acquisition that infrared spectrum effect realizes gas classification and concentration.
Summary of the invention
The object of this invention is to provide a kind of gas content in transformer oil on-line quick detection system, gas solubility computing velocity can be improved fast, realize reaching on-line monitoring more efficiently.
In order to reach above-mentioned purpose of design, the technical solution used in the present invention is as follows:
A kind of gas content in transformer oil on-line quick detection system, comprise process computing circuit, infrared spectrum generator, spectral matching factor module, gas-oil separation module, A/D modular converter, the power module of band ARM, described infrared spectrum generator, spectral matching factor module, gas-oil separation module are all arranged in constant temperature system, external spectrum generating apparatus, gas-oil separation module are connected respectively to spectral matching factor module, described spectral matching factor model calling is to A/D modular converter, and A/D modular converter is connected to the process computing circuit of band ARM.
Preferably, the described process computing circuit of ARM, infrared spectrum generator, spectral matching factor module, gas-oil separation module, the A/D modular converter be with is connected respectively to power module.
Preferably, described gas-oil separation module adopts vacuum outgas principle, dissolves the gas of some in certain temperature and liquid under pressure, and when temperature increases or pressure reduces, in liquid, dissolved gases quantity reduces; Otherwise when temperature reduces or pressure increases, in liquid, the amount of dissolved gas can increase; When not changing fluid temperature and pressure, by producing vacuum in equipment, the free gas in liquid and dissolved gas being discharged, then discharges system by automatic exhaust steam valve, thus by the gas removal in liquid.
Preferably, described infrared spectrum generator provides broadband IR source, narrow band light is formed through different optical filters, each optical filter only allows through a narrow-band spectrum, its centre frequency is corresponding with the characteristic absorption frequency of preselected gas molecule, to excite certain gas molecule, utilize the gas of a certain kind to the difference of the narrow band light absorption spectrum of characteristic frequency to realize distinguishing of gaseous species, obtain gas concentration by the absorption intensity difference of gas to spectrum of variable concentrations.
Preferably, described constant temperature system is made up of well heater, heater power source and temperature detect switch (TDS).
More preferably, its process is: through spectral matching factor module, detects the concentration of component each in gas, converts the directly proportional simulating signal with concentration to, carries out analog to digital conversion through A/D modular converter, sends into computing circuit, obtains final detection result.
More preferably, its concrete steps are:
1) start up system, and carry out self-inspection;
2) as system is abnormal, show failure code, as system is normal, then start heated at constant temperature;
3) detect temperature in constant temperature system whether to stablize, as unstable rule restarts heated at constant temperature, as stable then gas-oil separation module oil-feed;
4) by gas-oil separation module to oil carry out repeatedly degassed, concentrated after send into sensing chamber;
5) start infrared spectrum generator, and the light belt produced is radiated in the gas of step 4, obtains gas concentration by the absorption intensity difference of gas to spectrum of variable concentrations;
6) spectral matching factor module is started, the gas concentration simulating signal obtained in detecting step 5;
7) simulating signal is converted to digital signal by A/D modular converter;
8) by being with the process computing circuit of ARM to process digital signal, analyze, gas concentration testing result is obtained.
The beneficial effect of gas content in transformer oil on-line quick detection system of the present invention is: by using the analysis mechanisms of brand-new measuring principle, greatly can improve the sampling analysis speed of oil product, greatly improves accuracy of detection simultaneously.
Adopt laser imaging, utilize high-purity CO
2laser, can greatly improve the measuring precision and scope, pass through signal transacting, A/D conversion can be carried out to the data gathered, filter various interference noise and distortion data in source, high precision sample analysis data is provided, finally in a digital manner data after process are directly sent to backstage, greatly improve measuring accuracy, avoid the test error that causes due to reasons such as distances in transmitting procedure and interference, obtain True Data.Sample rate also improves greatly simultaneously, and analysis efficiency improves several times.
By adopting vacuum outgas, greatly can improve degassing efficiency and oil-feed, degassed, data analysis overall process within 1 hour, can be completed, can detect continuously; Use the analysis mechanisms of brand-new measuring principle, the accuracy of detection of gas can be improved.There is high-precision constant temperature system, can work under the rugged surroundings of high temperature, low temperature completely, the stability of system and the accuracy of data can be ensured.
Accompanying drawing explanation
Fig. 1 is the structural representation of gas content in transformer oil on-line quick detection system of the present invention;
Fig. 2 is the process flow diagram of gas content in transformer oil on-line quick detection system of the present invention.
Embodiment
Below in conjunction with accompanying drawing, optimum implementation of the present invention is described in further detail.
As shown in Figure 1, gas content in transformer oil on-line quick detection system described in the embodiment of the present invention, comprise the process computing circuit of band ARM, infrared spectrum generator, spectral matching factor module, gas-oil separation module, A/D modular converter, power module, described infrared spectrum generator, spectral matching factor module, gas-oil separation module is all arranged in constant temperature system, external spectrum generating apparatus, gas-oil separation module is connected respectively to spectral matching factor module, described spectral matching factor model calling is to A/D modular converter, A/D modular converter is connected to the process computing circuit of band ARM.
The process computing circuit of described band ARM, infrared spectrum generator, spectral matching factor module, gas-oil separation module, A/D modular converter are connected respectively to power module.
Described gas-oil separation module adopts vacuum outgas principle, and the principle of vacuum outgas is according to Henry's law, dissolves the gas of some in certain temperature and liquid under pressure, and when temperature increases or pressure reduces, in liquid, dissolved gases quantity reduces; Otherwise when temperature reduces or pressure increases, in liquid, the amount of dissolved gas can increase.When not changing fluid temperature and pressure, by producing vacuum in equipment, the free gas in liquid and dissolved gas being discharged, then discharges system by automatic exhaust steam valve, thus by the gas removal in liquid.
Described infrared spectrum generator provides broadband IR source, forms narrow band light through different optical filters.Each optical filter only allows through a narrow-band spectrum, and its centre frequency is corresponding with the characteristic absorption frequency of preselected gas molecule, to excite certain gas molecule.Utilize the gas of a certain kind to the difference of the narrow band light absorption spectrum of characteristic frequency to realize distinguishing of gaseous species, obtain gas concentration by the absorption intensity difference of gas to spectrum of variable concentrations.
Described infrared spectrum identification module, can greatly improve the measuring precision and scope, pass through signal transacting, A/D conversion can be carried out to the data gathered, filter various interference noise and distortion data in source, high precision sample analysis data is provided, finally in a digital manner data after process are directly sent to backstage, greatly improve measuring accuracy, avoid the test error that causes due to reasons such as distances in transmitting procedure and interference, obtain True Data.Sample rate also improves greatly simultaneously, and analysis efficiency improves several times.
Described constant temperature system is made up of well heater, heater power source and temperature detect switch (TDS), and gas-oil separation module, infrared spectrum generator and infrared identification module are all placed in constant temperature system.Constant efforts temperature makes oil-gas separation efficiency, and the stability of infrared identification module data obtains powerful guarantee.
The process computing circuit of described band ARM take arm processor as core, external 256M byte RAM storer, the non-volatile FLASH memory of 128M byte, periphery comprises Ethernet, RS232, RS485, USB, the interfaces such as I2C and I/O input and output, realize data acquisition, analysis, and external communication function.
As shown in Figure 2, its principle is: after device receives start-up command, and first system carries out self-inspection, starts temperature control system and carries out preheating.After system stability, open in-line, transformer relies on self oil pressure to enter degasser through sample tap (band T-valve), sample component is after repeatedly degassed, be concentrated in drip catcher, Residual oil enters fuel tank, and then sample component is purged to rapidly measurement air chamber, through spectral matching factor module, the concentration of each component is detected, converts the directly proportional simulating signal with concentration to, carry out analog to digital conversion through A/D modular converter, send into computing circuit, obtain final detection result.
Concrete steps are:
1) start up system, and carry out self-inspection;
2) as system is abnormal, show failure code, as system is normal, then start heated at constant temperature;
3) detect temperature in constant temperature system whether to stablize, as unstable rule restarts heated at constant temperature, as stable then gas-oil separation module oil-feed;
4) by gas-oil separation module to oil carry out repeatedly degassed, concentrated after send into sensing chamber;
5) start infrared spectrum generator, and the light belt produced is radiated in the gas of step 4, obtains gas concentration by the absorption intensity difference of gas to spectrum of variable concentrations;
6) spectral matching factor module is started, the gas concentration simulating signal obtained in detecting step 5;
7) simulating signal is converted to digital signal by A/D modular converter;
8) by being with the process computing circuit of ARM to process digital signal, analyze, gas concentration testing result is obtained.
Above content is the further description done the present invention in conjunction with concrete preferred implementation, and being convenient to these those skilled in the art can understand and apply the invention, and can not assert that specific embodiment of the invention is confined to these explanations.For general technical staff of the technical field of the invention, some simple deduction or replace can also be made without departing from the inventive concept of the premise, and need not through performing creative labour.Therefore, those skilled in the art are according to announcement of the present invention, and the simple modifications made the present invention all should within protection scope of the present invention.
Claims (7)
1. a gas content in transformer oil on-line quick detection system, it is characterized in that: the process computing circuit, infrared spectrum generator, spectral matching factor module, gas-oil separation module, A/D modular converter, the power module that comprise band ARM, described infrared spectrum generator, spectral matching factor module, gas-oil separation module are all arranged in constant temperature system, external spectrum generating apparatus, gas-oil separation module are connected respectively to spectral matching factor module, described spectral matching factor model calling is to A/D modular converter, and A/D modular converter is connected to the process computing circuit of band ARM.
2. gas content in transformer oil on-line quick detection system according to claim 1, is characterized in that: the process computing circuit of described band ARM, infrared spectrum generator, spectral matching factor module, gas-oil separation module, A/D modular converter are connected respectively to power module.
3. gas content in transformer oil on-line quick detection system according to claim 1, it is characterized in that: described gas-oil separation module adopts vacuum outgas principle, the gas of some is dissolved in certain temperature and liquid under pressure, when temperature increases or pressure reduces, in liquid, dissolved gases quantity reduces; Otherwise when temperature reduces or pressure increases, in liquid, the amount of dissolved gas can increase; When not changing fluid temperature and pressure, by producing vacuum in equipment, the free gas in liquid and dissolved gas being discharged, then discharges system by automatic exhaust steam valve, thus by the gas removal in liquid.
4. gas content in transformer oil on-line quick detection system according to claim 1, it is characterized in that: described infrared spectrum generator provides broadband IR source, narrow band light is formed through different optical filters, each optical filter only allows through a narrow-band spectrum, its centre frequency is corresponding with the characteristic absorption frequency of preselected gas molecule, to excite certain gas molecule, utilize the gas of a certain kind to the difference of the narrow band light absorption spectrum of characteristic frequency to realize distinguishing of gaseous species, gas concentration is obtained by the absorption intensity difference of gas to spectrum of variable concentrations.
5. gas content in transformer oil on-line quick detection system according to claim 1, is characterized in that: described constant temperature system is made up of well heater, heater power source and temperature detect switch (TDS).
6. the gas content in transformer oil on-line quick detection system according to claim 1 or 2 or 3 or 4 or 5, it is characterized in that: its process is: through spectral matching factor module, the concentration of component each in gas is detected, convert the directly proportional simulating signal with concentration to, analog to digital conversion is carried out through A/D modular converter, send into computing circuit, obtain final detection result.
7. gas content in transformer oil on-line quick detection system according to claim 6, is characterized in that: its concrete steps are:
1) start up system, and carry out self-inspection;
2) as system is abnormal, show failure code, as system is normal, then start heated at constant temperature;
3) detect temperature in constant temperature system whether to stablize, as unstable rule restarts heated at constant temperature, as stable then gas-oil separation module oil-feed;
4) by gas-oil separation module to oil carry out repeatedly degassed, concentrated after send into sensing chamber;
5) start infrared spectrum generator, and the light belt produced is radiated in the gas of step 4, obtains gas concentration by the absorption intensity difference of gas to spectrum of variable concentrations;
6) spectral matching factor module is started, the gas concentration simulating signal obtained in detecting step 5;
7) simulating signal is converted to digital signal by A/D modular converter;
8) by being with the process computing circuit of ARM to process digital signal, analyze, gas concentration testing result is obtained.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310224837.XA CN104237153A (en) | 2013-06-07 | 2013-06-07 | Online rapid detection system for gas content of transformer oil |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310224837.XA CN104237153A (en) | 2013-06-07 | 2013-06-07 | Online rapid detection system for gas content of transformer oil |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104237153A true CN104237153A (en) | 2014-12-24 |
Family
ID=52225661
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310224837.XA Pending CN104237153A (en) | 2013-06-07 | 2013-06-07 | Online rapid detection system for gas content of transformer oil |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104237153A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105866055A (en) * | 2016-03-28 | 2016-08-17 | 国网山东省电力公司东营市东营区供电公司 | Method for diagnosing oil-filled electrical equipment |
| CN105973297A (en) * | 2016-05-04 | 2016-09-28 | 国网山东省电力公司桓台县供电公司 | Transformer monitoring alarming system |
| CN110888002A (en) * | 2019-10-11 | 2020-03-17 | 大唐水电科学技术研究院有限公司 | Distribution transformer health assessment method |
| CN113702332A (en) * | 2021-08-23 | 2021-11-26 | 贵州电网有限责任公司 | SF6 electrical equipment fault component CO2Concentration detection device and method |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4236404A (en) * | 1976-08-31 | 1980-12-02 | General Electric Company | Device for monitoring dissolved gases in electrical insulating liquids such as transformer oils |
| CN101458234A (en) * | 2009-01-08 | 2009-06-17 | 上海交通大学 | Portable power transformer fault diagnostic apparatus |
| CN101975761A (en) * | 2010-10-26 | 2011-02-16 | 西安交通大学 | Fourier transform infrared spectrum quantitative analysis-based transformer oil-immersed gas analysis system and analysis method thereof |
| CN102539338A (en) * | 2011-12-30 | 2012-07-04 | 昆山和智电气设备有限公司 | Online monitoring system for gas content in transformer oil by using photoacoustic spectrum |
| WO2012104859A1 (en) * | 2011-02-01 | 2012-08-09 | Reliance Industries Ltd. | Apparatus for online analysis of viscous fluids using spectroscopy |
| CN202404070U (en) * | 2011-12-30 | 2012-08-29 | 昆山和智电气设备有限公司 | System for monitoring content of gas in transformer oil in online manner |
-
2013
- 2013-06-07 CN CN201310224837.XA patent/CN104237153A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4236404A (en) * | 1976-08-31 | 1980-12-02 | General Electric Company | Device for monitoring dissolved gases in electrical insulating liquids such as transformer oils |
| CN101458234A (en) * | 2009-01-08 | 2009-06-17 | 上海交通大学 | Portable power transformer fault diagnostic apparatus |
| CN101975761A (en) * | 2010-10-26 | 2011-02-16 | 西安交通大学 | Fourier transform infrared spectrum quantitative analysis-based transformer oil-immersed gas analysis system and analysis method thereof |
| WO2012104859A1 (en) * | 2011-02-01 | 2012-08-09 | Reliance Industries Ltd. | Apparatus for online analysis of viscous fluids using spectroscopy |
| CN102539338A (en) * | 2011-12-30 | 2012-07-04 | 昆山和智电气设备有限公司 | Online monitoring system for gas content in transformer oil by using photoacoustic spectrum |
| CN202404070U (en) * | 2011-12-30 | 2012-08-29 | 昆山和智电气设备有限公司 | System for monitoring content of gas in transformer oil in online manner |
Non-Patent Citations (1)
| Title |
|---|
| 国家电网公司武汉高压研究所: "《电离监测与故障诊断技术全书 变压器、电抗器、互感器卷 上》", 30 September 2005 * |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105866055A (en) * | 2016-03-28 | 2016-08-17 | 国网山东省电力公司东营市东营区供电公司 | Method for diagnosing oil-filled electrical equipment |
| CN105973297A (en) * | 2016-05-04 | 2016-09-28 | 国网山东省电力公司桓台县供电公司 | Transformer monitoring alarming system |
| CN110888002A (en) * | 2019-10-11 | 2020-03-17 | 大唐水电科学技术研究院有限公司 | Distribution transformer health assessment method |
| CN113702332A (en) * | 2021-08-23 | 2021-11-26 | 贵州电网有限责任公司 | SF6 electrical equipment fault component CO2Concentration detection device and method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102539338B (en) | Online monitoring system for gas content in transformer oil by using photoacoustic spectrum | |
| CN105606666A (en) | Gas sensor based portable switch cabinet partial discharge detection device and method | |
| CN202404070U (en) | System for monitoring content of gas in transformer oil in online manner | |
| CN102721645A (en) | Portable SF6 gas resolvent photoacoustic spectrum detecting device and method | |
| CN104237153A (en) | Online rapid detection system for gas content of transformer oil | |
| CN105548024A (en) | Photoacoustic spectrometry gas detection device based on pulse infrared light source | |
| CN107966419B (en) | On-line measuring device for absolute humidity of gas in flue gas or pipeline gas | |
| CN203551465U (en) | On-line monitoring system for transformer oil | |
| CN204008434U (en) | Gas decomposition product device in optoacoustic spectroscopy on-line monitoring SF6 electrical equipment | |
| CN104198461B (en) | Industrial process gas analyzer based on Raman effect | |
| CN202631418U (en) | Portable photoacoustic spectrometry detection device for SF6 gas decomposer | |
| CN109459411A (en) | A kind of detection platform for spectral type fibre optical sensor | |
| CN105300889B (en) | The method and device of trace gas concentration is measured as photoacoustic cell using diffusing reflection integral chamber | |
| CN104990883A (en) | Device for detecting gas concentration by spectrometer | |
| CN110907395A (en) | Direct absorption type TDLAS gas analyzer and method | |
| CN209911211U (en) | Degassing-free device for detecting dissolved gas and micro water in oil | |
| CN110907394A (en) | Heat tracing extraction type TDLAS gas analysis system and method | |
| CN103454114B (en) | The diagnosis of mesolow gas pressure regulator, governor operation troubles and safety early warning device and method | |
| CN113109397B (en) | SO in flue gas 3 Concentration on-line monitoring system and method thereof | |
| CN206292156U (en) | A kind of flue gas analyzer | |
| CN211576948U (en) | Automatic comprehensive smoke and dust tester | |
| CN206818606U (en) | Electric automobile power battery system fire produces the qualitative and quantitative analysis device of gas | |
| CN201724899U (en) | Sulfur hexafluoride gas humidity detector | |
| CN209841664U (en) | Gas detection device in oil based on laser photoacoustic spectrometry | |
| CN104748918B (en) | Oil leakage detection device for power capacitor |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20141224 |
|
| RJ01 | Rejection of invention patent application after publication |