CN105699866B - The method for detecting rail traffic insulating element using UV corona technology - Google Patents
The method for detecting rail traffic insulating element using UV corona technology Download PDFInfo
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- CN105699866B CN105699866B CN201610095905.0A CN201610095905A CN105699866B CN 105699866 B CN105699866 B CN 105699866B CN 201610095905 A CN201610095905 A CN 201610095905A CN 105699866 B CN105699866 B CN 105699866B
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/12—Testing dielectric strength or breakdown voltage ; Testing or monitoring effectiveness or level of insulation, e.g. of a cable or of an apparatus, for example using partial discharge measurements; Electrostatic testing
- G01R31/1218—Testing dielectric strength or breakdown voltage ; Testing or monitoring effectiveness or level of insulation, e.g. of a cable or of an apparatus, for example using partial discharge measurements; Electrostatic testing using optical methods; using charged particle, e.g. electron, beams or X-rays
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Abstract
A method of detecting rail traffic insulating element using UV corona technology, rail traffic insulating element can send out the feature of ultraviolet light before not yet damaging in the process of running, the ultraviolet light that rail traffic insulating element is sent out is classified, the rank residing for electric discharge ultraviolet light sent out using UV sensor detection rail traffic insulating element, to judge the insulation status residing for rail traffic insulating element, to carry out insulation status forecast before rail traffic insulating element insulation performance is not yet destroyed completely, prevent rail traffic insulating element from damaging.Thus the present invention judges the insulation performance of rail traffic insulating element using the insulation situation of UV corona technology detection rail traffic insulating element, have non-contact detecting, can forecast insulation status in advance, effectively avoid the occurrence of over-heated fault.
Description
Technical field
The present invention relates to a kind of component detection methods of rail traffic, and in particular to and it is a kind of to utilize UV corona technology,
To the insulating elements such as contact net, insulator, locomotive high-voltage equipment in Transit Equipment, the method for being detected control belongs to rail
Road traffic component monitoring of equipment control technology field.
Background technology
As the source of electric railway railroad traction, power supply system is most important, is the important composition portion of rail traffic
Point, power supply system is mainly made of substation, contact net, insulator, locomotive high-voltage equipment, electric pole etc., and power supply system is height
High current, the insulation degradation of component is pressed to directly result in the reduction of safety coefficient, conevying efficiency.For example, current electric railway
Service time has been up to decades, has been run up to 8 years high ferro such as military wide circuit；And as the crucial portion of power supply system
Part, the maintenance and repair of insulator at present still mainly by manually observe or by tools such as megameters periodically to examine, failure repaiies
Mode carries out, and the manpower and materials that this mode expends are big, and by taking Beijing-Guangzhou Railway road as an example, the quantity of insulator is at 150,000 or more, pole
Easily there is missing inspection, false retrieval, and equipment deterioration state does not have judging basis, while the not method of long term monitoring, therefore compels to be essential
Want a kind of method and product that comprehensive detection assessment can be done to the deterioration state of insulator.It is high for substation, contact net, locomotive
Pressure equipment, electric pole etc. require the component of insulation performance more ripe non-contact detection method and device.
By patent retrieval do not find have with the patent literature of same technique of the present invention, have certain relationship with the present invention
Patent mainly have it is following：
1, Patent No. CN201510312179.9, entitled " the distribution partial discharge flashover based on ultraviolet optical detection technique exists
The utility model patent of line monitoring system ", which disclose a kind of, and the distribution partial discharge flashover based on ultraviolet optical detection technique exists
Line monitoring system, the system include data acquisition module, communication module and control terminal, and the data acquisition module includes successively
Ultraviolet light transducer, photoelectric conversion unit, AD conversion unit, the master controller of connection；The photoelectric conversion unit and modulus
Reversed scaling circuit and high-pass filter are equipped between converting unit, ultraviolet light transducer receives ultraviolet light pulse, passes through
Photoelectric conversion module is converted to the current pulse signal of negative sense, through preposition reversed scaling circuit, obtains forward voltage signal,
Forward voltage signal filters out low-frequency disturbance by high-pass filter；Signal is sent to device master controller after carrying out analog-to-digital conversion.
By using advanced ultraviolet optical sensing, the office to one of the main forms of distribution facility failure hidden danger may be implemented
It puts flashover and shifts to an earlier date control and early warning.
2, Patent No. CN201310327941.1, the hair of entitled " contactless ultraviolet pulse discharge monitoring device "
Bright patent, which disclose a kind of contactless ultraviolet pulse discharge monitoring device, including sensor group, with sensor group phase
Signal condition unit even, the microprocessor that is connected with signal condition unit, be also associated on the microprocessor power supply unit,
Storage unit, display unit and control unit are also associated with communication unit and GPS positioning unit on the microprocessor, described
Sensor group includes UV sensor.The invention is monitored discharge scenario by UV sensor, is single by communicating
Member carries out telecommunication, is positioned by GPS positioning unit, not by High-frequency Interference, and can puncture insulation in shelf depreciation, destroy
It finds before power equipment to discharge and alarm and take measures, ensure the stabilization and safety of electric system, there is sensitivity
The advantages that high, small, easy to carry.
3, Patent No. CN201010244378.8, it is entitled " ultraviolet method power cable on-line condition monitoring assesses instrument "
Patent of invention, which disclose a kind of ultraviolet method power cable on-line condition monitoring assess instrument, by the ultraviolet inspection of shelf depreciation
Survey unit, dielectric parameter measurement unit, temperature detecting unit, central control processing unit, GSM data communication units and electricity
Power management circuits are constituted；The output end of shelf depreciation ultraviolet detection unit and the output end of dielectric parameter measurement unit and
The output end of temperature detecting unit is connect with the input terminal of central control processing unit respectively；The output of central control processing unit
End is connect by CAN bus with the input terminal of GSM data communication units；The output end of electric power management circuit respectively with shelf depreciation
Ultraviolet detection unit, dielectric parameter measurement unit, temperature detecting unit, central control processing unit and GSM data are logical
Believe the power end connection of unit.Assessment is with the buried lower cable temperature of on-line checking, shelf depreciation, dielectric property variation and environment shape
The parameters such as condition have the advantages that detection result is reliably sensitive, testing cost is relatively low.
So although these above-mentioned patents are directed to and are monitored using ultraviolet light, and propose some specific monitorings
Method, but all do not propose how to be detected control to the urban transportation insulating element using ultraviolet light corona technology
The method and device of system, and existing the urban transportation insulating element is generally all in more severe operating mode place work
Make, it is easy to insulation performance in poor quality occur, the insulation degradation of component will result directly in safety coefficient, the drop of conevying efficiency
It is low, so still needing further to be improved.
Invention content
It is an object of the invention to be directed to the problems of existing rail traffic insulating element performance detection, propose a kind of
The method for detecting rail traffic insulating element using UV corona technology, this kind of detection method have detection rail traffic in detail exhausted
The monitoring function of edge part operating status, can prejudge in advance in this way rail traffic insulating element with the presence or absence of potential faults, what
Kind potential faults can also accomplish further lifetime of system analysis.
In order to reach this purpose, rail traffic insulating element is detected using UV corona technology the present invention provides a kind of
Method, according to electrion feature, rail traffic insulating element will damage it in the process of running, when insulating element is in
It is preceding to send out ultraviolet light because of decreasing insulating, Discharge Phenomena；The ultraviolet light that rail traffic insulating element is sent out
It is classified, the rank residing for electric discharge ultraviolet light sent out using UV sensor detection rail traffic insulating element is come
The insulation status residing for rail traffic insulating element is judged, to not yet be destroyed completely in rail traffic insulating element insulation performance
Insulation status forecast is carried out before, prevents rail traffic insulating element from damaging.
Further, the electric discharge ultraviolet light sent out using UV sensor detection rail traffic insulating element
Residing rank is that UV sensor is arranged in rail traffic insulating element insulation position the weakest, is sensed by ultraviolet light
The ultraviolet light that device in real time sends out rail traffic insulating element is detected, exhausted using UV sensor detection rail traffic
The electric discharge ultraviolet light that edge part is sent out, and the electric discharge ultraviolet signal that rail traffic insulating element is sent out is converted into voltage
Signal, then by voltage signal after being filtered of the filter and amplification of signal conditioning circuit and software systems, with setting
Threshold value is compared to statistics umber of pulse, judges that the electric discharge of insulation of electrical installation damage position is strong according to the dense degree of pulse
Degree.
Further, the electric discharge ultraviolet light sent out using Ultraviolet sensor detection rail traffic insulating element is
UV sensor is installed at rail traffic insulating element most weak position, UV sensor is by detecting rail traffic
The ultraviolet light that insulating element is sent out judges electric discharge or the presence of flame indirectly, and by the directly proportional output signal of signal strength
It is analyzed to the processing of master system software.
Further, the electric discharge ultraviolet signal that rail traffic insulating element is sent out is converted to voltage signal
It is that electric discharge ultraviolet signal will be converted to after UV sensor detects the ultraviolet light that rail traffic insulating element is sent out
Voltage signal；Critical point before rail traffic insulating element punctures generates corona first, and Ultraviolet sensor is able to detect that
Smaller discharge pulse, when arc discharge occurs, electric discharge amplitude significantly improves, and increases in the same direction with voltage class；With insulation
It destroys and increases, strength of discharge gradually increases to tripping, and discharge waveform amplitude mutates, and whole process meets gas discharge development
Process, the UV power that Ultraviolet sensor can generate gas discharge accurately measure, and output quantization voltage signal, foundation is set
Fixed threshold determination is by the state of insulation of test specimen.
Further, the filtering of the filter and amplification and software systems by voltage signal Jing Guo signal conditioning circuit
Processing is that ultraviolet phototube will be used to be used as signal collecting element, after UV sensor acquisition signal, by signal condition and
Signal acquisition module generates pulse signal, and test to ultraviolet pulse completes signal acquisition using related algorithm, later by letter
The processing of number conditioning module uploads to ftp server and upper computer software, and upper computer analyzing software is mounted on ftp server, soft
Part receives the data file of UV corona detector by FTP modes, solves the data of new record, and the image of component of detection is shown
It is intuitively shown with waveform in host computer, and by the ultraviolet light data of detection..
Further, it is according to rail traffic insulating element that the threshold value with setting, which is compared to statistics umber of pulse,
The ultraviolet light corona sent out is demarcated in different intensity of each stage using UV pulse method, and produces standard value,
Then the intensity of UV pulse method detection rail traffic insulating element UV corona is used, then is compared with standard value, according to
The dense degree of pulse come judge insulation of electrical installation damage position strength of discharge.
The advantage of the invention is that：
The present invention detects the insulation situation of rail traffic insulating element using UV corona technology, in rail traffic insulation division
When the insulation performances of the insulating elements such as the insulator of part reduces, if there is the increase of fault of construction or surface filth and humidity,
Corona and shelf depreciation are just will produce, sustainable development can lead to flashover and tripping to a certain extent, at this moment corona and surface part
The ultraviolet light of specific band can be radiated in discharge process, the present invention passes through the most weak part setting in rail traffic insulating element
UV sensor, the intensity of UV corona is detected using UV pulse method, and is compared to unite by the threshold value with setting
Umber of pulse is counted, thus judges the insulation performance of rail traffic insulating element, there is non-contact detecting, can forecast insulation shape in advance
Condition effectively avoids the occurrence of over-heated fault.
Description of the drawings
Fig. 1 is present system software control schematic diagram.
Specific implementation mode
It is next in the following with reference to the drawings and specific embodiments that the present invention is further explained.
Embodiment one
By attached drawing 1 as can be seen that detecting rail traffic insulating element using UV corona technology the present invention relates to a kind of
Method, according to electrion feature, rail traffic insulating element in the process of running not yet damage before can send out ultraviolet light
Feature, the ultraviolet light that rail traffic insulating element is sent out is classified, utilize UV sensor detect rail traffic
The rank residing for electric discharge ultraviolet light that insulating element is sent out, to judge the insulation status residing for rail traffic insulating element, from
And insulation status forecast is carried out before rail traffic insulating element insulation performance is not yet destroyed completely, prevent rail traffic from insulating
Parts damages.
Further, the electric discharge ultraviolet light sent out using UV sensor detection rail traffic insulating element
Residing rank is that UV sensor is arranged in rail traffic insulating element insulation position the weakest, is sensed by ultraviolet light
The ultraviolet light that device in real time sends out rail traffic insulating element is detected, and is put what rail traffic insulating element was sent out
Electric ultraviolet signal is converted to voltage signal, then voltage signal is passed through to the filter and amplification and software systems of signal conditioning circuit
Be filtered after, with the threshold value of setting be compared to statistics umber of pulse, judge electrically to set according to the dense degree of pulse
The strength of discharge of standby insulation damages position.
Further, the electric discharge ultraviolet light sent out using Ultraviolet sensor detection rail traffic insulating element is
UV sensor is installed at rail traffic insulating element most weak position, UV sensor is by detecting rail traffic
The ultraviolet light that insulating element is sent out judges electric discharge or the presence of flame indirectly, and by the directly proportional output signal of signal strength
It is analyzed to the processing of master system software.
Further, the electric discharge ultraviolet signal that rail traffic insulating element is sent out is converted to voltage signal
It is that electric discharge ultraviolet signal will be converted to after UV sensor detects the ultraviolet light that rail traffic insulating element is sent out
Voltage signal；Critical point before rail traffic insulating element punctures generates corona first, and Ultraviolet sensor is able to detect that
Smaller discharge pulse, when arc discharge occurs, electric discharge amplitude significantly improves, and increases in the same direction with voltage class；With insulation
It destroys and increases, strength of discharge gradually increases to tripping, and discharge waveform amplitude mutates, and whole process meets gas discharge development
Process accurately measures the UV power that gas discharge generates by Ultraviolet sensor, output quantization voltage signal, and foundation is set
Fixed threshold determination is by the state of insulation of test specimen.
Further, the filtering of the filter and amplification and software systems by voltage signal Jing Guo signal conditioning circuit
Processing is that ultraviolet phototube will be used to be used as signal collecting element, after UV sensor acquisition signal, by signal condition and
Signal acquisition module generates pulse signal, and test to ultraviolet pulse completes signal acquisition using related algorithm, later by letter
The processing of number conditioning module uploads to ftp server and upper computer software, and upper computer analyzing software is mounted on ftp server, soft
Part receives the data file of UV corona detector by FTP modes, solves the data of new record, and the image of component of detection is shown
It is intuitively shown with waveform in host computer, and by the ultraviolet light data of detection.
Further, it is according to rail traffic insulating element that the threshold value with setting, which is compared to statistics umber of pulse,
The ultraviolet light corona sent out is demarcated in different intensity of each stage using UV pulse method, and produces standard value,
Then the intensity of UV pulse method detection rail traffic insulating element UV corona is used, then is compared with standard value, according to
The dense degree of pulse come judge insulation of electrical installation damage position strength of discharge.
The present invention concrete operation step be（Such as attached drawing 1）：
1, power supply is opened, instrument hardware proceeds by initialization；
2, start hardware device self-test, if self-test will not be by that will send out fault alarm, be concurrently out of order code；
If 3, data initialization by that will be detected LOOP, if measure loop by self-test（LOOP）It was found that hardware anomalies
Failure code will equally be sent out；
If 4, data initialization, LOOP no abnormality seens are detected, detection will be sent out by serial ports or bluetooth by host computer and referred to
It enables, opens detection button, parse user instruction；
5, by the detection position of detection part needed for the Ultraviolet sensor of test equipment and ultraviolet phototube alignment lens, by
Ultraviolet sensor and ultraviolet phototube camera lens acquisition ultraviolet signal and ADC；
It 6, will acquisition ultraviolet signal and ADC feeding processing module progress Digital Signal Processing；
7, the digital signal handled well and standard ultraviolet light are compared, and are carried out at data analysis by backstage
Reason；
8 but find data exception, exceed range of normal value, early warning will be carried out, and data will be recorded, while by long-range
Means of transportation carries out data transferring.
The advantage of the invention is that：
The present invention detects the insulation situation of rail traffic insulating element using UV corona technology, in rail traffic insulation division
When the insulation performances of the insulating elements such as the insulator of part reduces, if there is the increase of fault of construction or surface filth and humidity,
Corona and shelf depreciation are just will produce, sustainable development can lead to flashover and tripping to a certain extent, at this moment corona and surface part
The ultraviolet light of specific band can be radiated in discharge process, the present invention passes through the most weak part setting in rail traffic insulating element
UV sensor, the intensity of UV corona is detected using UV pulse method, and is compared to unite by the threshold value with setting
Umber of pulse is counted, thus judges the insulation performance of rail traffic insulating element, there is non-contact detecting, can forecast insulation shape in advance
Condition effectively avoids the occurrence of over-heated fault.
Claims (5)
1. a kind of method detecting rail traffic insulating element using UV corona technology, it is characterised in that：Rail traffic is insulated
Component can send out the feature of ultraviolet light before not yet damaging in the process of running, rail traffic insulating element be sent out ultraviolet
Light is classified, the rank residing for electric discharge ultraviolet light sent out using UV sensor detection rail traffic insulating element,
The insulation status residing for rail traffic insulating element is judged, to not yet completely broken in rail traffic insulating element insulation performance
Insulation status forecast is carried out before bad, prevents rail traffic insulating element from damaging；Described detects rail using UV sensor
The rank residing for electric discharge ultraviolet light that road traffic insulating element is sent out is the weakest in the insulation of rail traffic insulating element
UV sensor is arranged in position, and the ultraviolet light sent out in real time to rail traffic insulating element by UV sensor is examined
It surveys, and the electric discharge ultraviolet signal that rail traffic insulating element is sent out is converted into voltage signal, then voltage signal is passed through
After being filtered of the filter and amplification of signal conditioning circuit and software systems, statistics pulse is compared to the threshold value of setting
Number judges that insulation of electrical installation damages the strength of discharge of position according to the dense degree of pulse；Described is exhausted by rail traffic
It is that UV sensor detects rail traffic insulation division that the electric discharge ultraviolet signal that edge part is sent out, which is converted to voltage signal,
After the ultraviolet light that part is sent out, electric discharge ultraviolet signal will be converted to voltage signal；Rail traffic insulating element punctures
Preceding critical point generates corona first, and UV sensor is able to detect that smaller discharge pulse, when arc discharge occurs, puts
Electric amplitude significantly improves, and increases in the same direction with voltage class；As insulation breakdown increases, strength of discharge gradually increases to tripping,
Discharge waveform amplitude mutates, and whole process meets gas discharge evolution, and UV sensor can be to gas discharge
The UV power of generation accurately measures, output quantization voltage signal, and the threshold determination according to setting is by the state of insulation of test specimen.
2. utilizing the method for UV corona technology detection rail traffic insulating element as described in claim 1, it is characterised in that：
The electric discharge ultraviolet light sent out using UV sensor detection rail traffic insulating element is insulated in rail traffic
UV sensor is installed at the most weak position of component, what UV sensor was sent out by detecting rail traffic insulating element
Ultraviolet light judge indirectly electric discharge or flame presence, and by signal strength it is directly proportional output signal to master system software
Processing analysis.
3. utilizing the method for UV corona technology detection rail traffic insulating element as described in claim 1, it is characterised in that：
It is described by voltage signal by signal conditioning circuit filter and amplification and software systems be filtered be will use it is ultraviolet
Photoelectric tube is as signal collecting element, after UV sensor acquires signal, by signal condition and signal acquisition module, generates
Pulse signal, test to ultraviolet pulse complete signal acquisition using related algorithm, pass through later in Signal-regulated kinase processing
Ftp server and upper computer software are passed to, upper computer analyzing software is mounted on ftp server, and software is received by FTP modes
The data file of UV corona detector solves the data of new record, by the image of component of detection include in host computer, and will detection
Ultraviolet light data intuitively shown with waveform.
4. utilizing the method for UV corona technology detection rail traffic insulating element as described in claim 1, it is characterised in that：
It is the ultraviolet light electricity sent out according to rail traffic insulating element that the described threshold value with setting, which is compared to statistics umber of pulse,
It swoons and is demarcated using UV pulse method in different intensity of each stage, and produce standard value, then use ultraviolet pulse
Method detects the intensity of rail traffic insulating element UV corona, then is compared with standard value, according to the dense degree of pulse come
Judge the strength of discharge of insulation of electrical installation damage position.
5. utilizing the method for UV corona technology detection rail traffic insulating element as described in claim 1, it is characterised in that：
The ultraviolet light sent out in real time to rail traffic insulating element by UV sensor is detected concrete operation step
It is：
A. power supply is opened, instrument hardware proceeds by initialization；
B. start hardware device self-test, if self-test will not be by that will send out fault alarm, be concurrently out of order code；
C. if data initialization by that will be detected LOOP, if measure loop by self-test（LOOP）It was found that hardware anomalies will be same
Sample sends out failure code；
D. if data initialization, LOOP no abnormality seens are detected, detection instruction will be sent out by serial ports or bluetooth by host computer, and beaten
Detection button is opened, user instruction is parsed；
E. by the detection position of detection part needed for the UV sensor of test equipment and ultraviolet phototube alignment lens, by purple
Outside line sensor and ultraviolet phototube camera lens acquisition ultraviolet signal and ADC；
It F. will acquisition ultraviolet signal and ADC feeding processing module progress Digital Signal Processing；
G. the digital signal handled well and standard ultraviolet light are compared, and Data Analysis Services is carried out by backstage；
But it was found that data exception, exceeds range of normal value, will carry out early warning, and will record data, while passing through teletransmission work
Tool carries out data transferring.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2767959C1 (en) * | 2021-03-12 | 2022-03-22 | федеральное государственное бюджетное образовательное учреждение высшего образования «Томский государственный университет систем управления и радиоэлектроники» | Method of controlling defectiveness of insulation of winding wires |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105866649A (en) * | 2016-06-28 | 2016-08-17 | 株洲壹星科技股份有限公司 | Method for detecting insulation performance of locomotive electrical equipment by ultraviolet corona |
| CN108181554A (en) * | 2017-12-13 | 2018-06-19 | 成都深蓝动力科技有限公司 | A kind of on-Line Monitor Device of motor insulation performance |
| CN109444689B (en) | 2018-11-19 | 2020-03-27 | 中国矿业大学 | Subway/coal mine backflow track insulation damage position and transition resistance monitoring method thereof |
| RU2737515C1 (en) * | 2020-02-21 | 2020-12-01 | федеральное государственное бюджетное образовательное учреждение высшего образования «Томский государственный университет систем управления и радиоэлектроники» | Method of controlling winding insulation defectiveness |
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| KR101028884B1 (en) * | 2008-12-30 | 2011-04-12 | 한국전기안전공사 | Partial discharge measuring apparatus using UV sensor array and method thereof |
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| US6104297A (en) * | 1999-01-20 | 2000-08-15 | Danilychev; Vladimir A. | Corona discharge detection system |
| CN1858606A (en) * | 2006-05-31 | 2006-11-08 | 清华大学深圳研究生院 | Corona detecting method and system for insulator remote surface on optical amplifier |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| RU2767959C1 (en) * | 2021-03-12 | 2022-03-22 | федеральное государственное бюджетное образовательное учреждение высшего образования «Томский государственный университет систем управления и радиоэлектроники» | Method of controlling defectiveness of insulation of winding wires |
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