CN105301542A - Full-solar-blind ultraviolet imaging quantified detection method based on photon counting technology - Google Patents
Full-solar-blind ultraviolet imaging quantified detection method based on photon counting technology Download PDFInfo
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- CN105301542A CN105301542A CN201510783885.1A CN201510783885A CN105301542A CN 105301542 A CN105301542 A CN 105301542A CN 201510783885 A CN201510783885 A CN 201510783885A CN 105301542 A CN105301542 A CN 105301542A
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Abstract
A full-solar-blind ultraviolet imaging quantified detection method based on a photon counting technology comprises the steps of: obtaining an ultraviolet photon counting equivalent value by adopting a formula shown in the specification; fixing a gain set value of a full-solar-blind ultraviolet detection instrument to the 60% position of a measuring range in a photon counting process; and carrying out photon counting in a specific area object, and carrying out counting on only a single discharge position, wherein a counting area covers all continuous points and more than 90% of stay points caused by rayleigh scattering. According to the invention, a full-solar-blind ultraviolet imaging instrument is used for detecting corona discharging, the specific position of corona discharging in a high-voltage electric device is obtained through an ultraviolet and visible light two-channel fused image in the ultraviolet imaging instrument, then ultraviolet photons at the corona discharging position are counted so as to carry out quantified analysis on the corona discharging, the influences factors such as the detecting distance, the environment humidity and the voltage level are modified, and an ultraviolet photon detection and correction formula superior to an existing standard.
Description
Technical field
The present invention relates to a kind of full-time blind ultraviolet imagery quantification detection method, especially relate to a kind of full-time blind ultraviolet imagery quantification detection method based on photon counting technique.
Background technology
High voltage alive equipment has a very wide distribution, and residing geographical environment is complicated, and electric pressure is various, easily occurs paradoxical discharge situation in long-time running.When after high voltage alive equipment generation paradoxical discharge, realize point of discharge location and order of severity quantitative analysis fast and accurately, the time of manual inspection investigation needed for point of discharge can be reduced by, alleviate the workload of operation maintenance personnel, shorten discharge defect release time, can monitor it in potential faults bud, the assessment discharge severity of objective, science, thus for high voltage alive equipment pre-preservation & testing and datumization management provides science, the data with comparability.
Ultraviolet imagery detection technique is the principle utilizing ultraviolet light detector to detect ultraviolet light, and the invisible ultraviolet that corona discharge produces is converted to visual image.When detected object release ultraviolet signal, spectrum enters ultraviolet imager optical system, visible ray and ultraviolet light are carried out light splitting by beam splitting system, ultraviolet detector accepts ultraviolet signal, combine with visible ray again through digital-to-analog conversion and superpose, finally on the screen of instrument, show visible ray and ultraviolet combination image.Ultraviolet imager, by the ultraviolet produced during detection charging equipment corona discharge, carrys out positioning equipment corona discharge defect, and utilizes corona photon counting to carry out the intensity of judgment device corona discharge, and then the assessment charging equipment defect order of severity.
Due to the real-time of corona detection, major part detects to be needed to carry out by day, and due to enter earth surface sunshine in the ultraviolet light that there is partial spectrum more or less, therefore, the full-time blind ultraviolet imager existed in the market, blind ultraviolet imager on the half and yctalopia ultraviolet imager can the impacts of to what extent filtering sunshine medium ultraviolet light, determine the promotional value of ultraviolet imager at high voltage alive equipment corona detection; In addition, the impact considering that ambient humidity, detecting distance and equipment electric pressure cause instrument detection ultraviolet light subnumber is also needed.
Ultraviolet imager is applied to high voltage alive equipment corona detection, and Applicative time is shorter at home, as a kind of emerging detection technique, there is no system, reliably corona discharge quantification and detects related specifications.Under prior art conditions, the photon counting result that dissimilar, different manufacturers, different model ultraviolet imager draws is different, even same equipment, under different distance, different humidity, different electric pressure condition, photon counting result is also different.At present, need the ultraviolet photon method of counting set up and there is comparability badly, provide technical basis to the quantification criterion of power equipment.
Summary of the invention
Technical matters to be solved by this invention, is just to provide a kind of full-time blind ultraviolet imagery quantification detection method based on photon counting technique, for charging equipment operation maintenance, detection and quantity of state management provide the quantitative data of science.
Solve the problems of the technologies described above, the technical solution used in the present invention is as follows:
Based on a full-time blind ultraviolet imagery quantification detection method for photon counting technique, it is characterized in that: comprise the step adopting following formula to try to achieve ultraviolet photon counting equivalent value:
Σ
5.5＝0.33d
2Σexp(0.4125-0.075d)*v*m*[1+(0.95-h)/0.95](1)；
Σ
5.5: for being converted to ultraviolet photon count value during 5.5m gauged distance, referred to as ultraviolet photon counting equivalent value;
D: be actual measuring distance, m;
Σ: for detecting the ultraviolet photon count value obtained when d measuring distance;
V: be electric pressure correction factor, 110kV and following electric pressure gets 1,220kV and above gets 0.5;
M: be electric discharge position correction factor, electric discharge position be insulator sheath and wire time coefficient get 1, during other positions, coefficient gets 0.3;
H: be test environment humidity, %;
During photon counting, full-time blind Ultraviolet Detector gain setting value is fixed on 60% place of range;
Carry out in specific section object during photon counting, and only count single discharge position, whole continuity point is contained in counting region, and contains the ionization point that more than 90% Rayleigh scattering causes as far as possible.
Beneficial effect: the present invention is according to a large amount of science, the laboratory simulation optimization of system and field measurement, consider the examined distance of UV detect result, ambient humidity, the influence factor at equipment electric pressure and electric discharge position, and adopt the impact of full-time blind ultraviolet imagery equipment filtering sunshine medium ultraviolet light, draw the correction formula (1) of ultraviolet photon count results, relate to ambient humidity, detecting distance, the impact that equipment electric pressure and electric discharge position are caused instrument detection ultraviolet light subnumber, for charging equipment operation maintenance, detection and quantity of state management provide the quantitative data of science, and this formula has intuitively simply, is easy to the advantage of application.
Accompanying drawing explanation
Fig. 1 is the full-time blind ultraviolet imager quantification detecting instrument principle schematic of employing of the present invention;
Fig. 2 is the experimental principle figure adopting pressure build-up test method in laboratory to test ultraviolet photon count value Changing Pattern under varying environment and measuring distance in the present invention.
Embodiment
Full-time blind ultraviolet imagery quantification detection method embodiment based on quantification photon counting technique of the present invention, comprises the step adopting following formula to try to achieve ultraviolet photon counting equivalent value:
Σ
5.5＝0.33d
2Σexp(0.4125-0.075d)*v*m*[1+(0.95-h)/0.95](1)；
Σ
5.5: for being converted to ultraviolet photon count value during 5.5m gauged distance, referred to as ultraviolet photon counting equivalent value;
D: be actual measuring distance, m;
Σ: for detecting the ultraviolet photon count value obtained when d measuring distance;
V: be electric pressure correction factor, 110kV and following electric pressure gets 1,220kV and above gets 0.5;
M: be electric discharge position correction factor, electric discharge position be insulator sheath and wire time coefficient get 1, during other positions, coefficient gets 0.3;
H: be test environment humidity, %;
During photon counting, full-time blind Ultraviolet Detector gain setting value is fixed on 60% place of range;
Carry out in specific section object during photon counting, and only count single discharge position, whole continuity point is contained in counting region, and contains the ionization point that more than 90% Rayleigh scattering causes as far as possible.
Carry out apparatus structure that said method uses and composition comprises:
One ultraviolet light beam separation vessel, light is decomposed into natural light and ultraviolet light by it;
One Visible Light Camera being provided with front visible light lens, to be located in natural light light path and to receive;
The blind filter of the one ultraviolet sun, to be located in ultraviolet light light path and to filter sunshine;
One ultraviolet-cameras being provided with front ultraviolet lens, to be located in the sunshine light path after being filtered and to receive;
One CCD camera, the ultraviolet-cameras described in connection;
One imaging importing processor, receives and mixes the image that Visible Light Camera and CCD camera send.
Adopt laboratory needle plate electrode pressure build-up test method to test ultraviolet photon count value Changing Pattern under varying environment and measuring distance in the present invention, ultraviolet photon counting experiments principle is see Fig. 2.
Composition: the automatic coupling voltage regulator T1 regulating trial voltage, realizes the step-up transformer T2 that voltage promotes, and plays the protective resistance R of metering function, measures capacitive divider C1 and the C2 of trial voltage, can produce the needle plate electrode A of stable electrical corona.
Primary coil tap one end ground connection of T2, the output terminal of another termination autotransformer, the secondary coil of T2 is in series with protective resistance R and needle plate electrode A.
One end ground connection of the primary coil T1 of autotransformer, other end input 220V alternating current.
The two ends of capacitive divider C1 and C2 are in parallel with excellent plate electrode.
Claims (1)
1. based on a full-time blind ultraviolet imagery detection method for quantification photon counting technique, it is characterized in that: comprise the step adopting following formula to try to achieve ultraviolet photon counting equivalent value:
Σ
5.5＝0.33d
2Σexp(0.4125-0.075d)*v*m*[1+(0.95-h)/0.95](1)；
Σ
5.5: for being converted to ultraviolet photon count value during 5.5m gauged distance, referred to as ultraviolet photon counting equivalent value;
D: be actual measuring distance, m;
Σ: for detecting the ultraviolet photon count value obtained when d measuring distance;
V: be electric pressure correction factor, 110kV and following electric pressure gets 1,220kV and above gets 0.5;
M: be electric discharge position correction factor, electric discharge position be insulator sheath and wire time coefficient get 1, during other positions, coefficient gets 0.3;
H: be test environment humidity, %;
During photon counting, full-time blind Ultraviolet Detector gain setting value is fixed on 60% place of range;
Carry out in specific section object during photon counting, and only count single discharge position, whole continuity point is contained in counting region, and contains the ionization point that more than 90% Rayleigh scattering causes.
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| CN201510783885.1A CN105301542A (en) | 2015-11-13 | 2015-11-13 | Full-solar-blind ultraviolet imaging quantified detection method based on photon counting technology |
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Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106940419A (en) * | 2017-05-08 | 2017-07-11 | 上海电力学院 | The ultraviolet detector of number of photons is compensated based on tellurometer survey |
| CN107179490A (en) * | 2017-06-12 | 2017-09-19 | 上海电力学院 | A kind of device for detecting corona discharge of Kinect rangings amendment number of photons |
| CN107192924A (en) * | 2017-03-21 | 2017-09-22 | 华北电力大学（保定） | A kind of non-common optical axis ultraviolet imager electric discharge point location antidote |
| CN109116197A (en) * | 2018-07-23 | 2019-01-01 | 北方夜视技术股份有限公司 | Day blind ultraviolet-cameras and ultraviolet photon method of counting |
| CN109143140A (en) * | 2018-07-23 | 2019-01-04 | 北方夜视技术股份有限公司 | Day, blind ultraviolet imager detected the caliberating device and scaling method of consistency |
| CN109544497A (en) * | 2018-11-21 | 2019-03-29 | 国网江苏省电力有限公司扬州供电分公司 | Image interfusion method and electronic equipment for transmission line faultlocating |
| CN110161374A (en) * | 2019-06-18 | 2019-08-23 | 苏州微纳激光光子技术有限公司 | A kind of day blind ultraviolet imagery background Xanthophyll cycle optical system and method |
| CN110244197A (en) * | 2019-04-22 | 2019-09-17 | 电子科技大学 | A kind of low-temperature plasma scalpel discharge stability detection device and detection method |
| CN110261747A (en) * | 2019-07-10 | 2019-09-20 | 重庆大学 | Ultraviolet discharge detector bearing calibration and device based on standard discharging model |
| CN111157110A (en) * | 2020-01-15 | 2020-05-15 | 上海电气输配电试验中心有限公司 | Photon counting space density calculation method for ultraviolet imaging and imaging equipment thereof |
| CN112255512A (en) * | 2020-10-10 | 2021-01-22 | 福州润森电气自动化有限公司 | Solar blind ultraviolet imaging device with laser ranging function and photon counting method |
| CN113721118A (en) * | 2021-09-26 | 2021-11-30 | 华北电力大学 | Ultraviolet imaging simulation experiment device for discharge of burr type defect on surface of conducting wire |
| CN113777451A (en) * | 2021-09-12 | 2021-12-10 | 华北电力大学 | Method for judging corona initial voltage by utilizing photon number based on discharge ultraviolet image |
| CN114002566A (en) * | 2021-11-09 | 2022-02-01 | 国网山东省电力公司电力科学研究院 | Partial discharge detection device and method based on multi-light fusion |
-
2015
- 2015-11-13 CN CN201510783885.1A patent/CN105301542A/en active Pending
Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107192924A (en) * | 2017-03-21 | 2017-09-22 | 华北电力大学（保定） | A kind of non-common optical axis ultraviolet imager electric discharge point location antidote |
| CN106940419A (en) * | 2017-05-08 | 2017-07-11 | 上海电力学院 | The ultraviolet detector of number of photons is compensated based on tellurometer survey |
| CN107179490A (en) * | 2017-06-12 | 2017-09-19 | 上海电力学院 | A kind of device for detecting corona discharge of Kinect rangings amendment number of photons |
| CN109116197A (en) * | 2018-07-23 | 2019-01-01 | 北方夜视技术股份有限公司 | Day blind ultraviolet-cameras and ultraviolet photon method of counting |
| CN109143140A (en) * | 2018-07-23 | 2019-01-04 | 北方夜视技术股份有限公司 | Day, blind ultraviolet imager detected the caliberating device and scaling method of consistency |
| CN109544497A (en) * | 2018-11-21 | 2019-03-29 | 国网江苏省电力有限公司扬州供电分公司 | Image interfusion method and electronic equipment for transmission line faultlocating |
| CN110244197A (en) * | 2019-04-22 | 2019-09-17 | 电子科技大学 | A kind of low-temperature plasma scalpel discharge stability detection device and detection method |
| CN110161374A (en) * | 2019-06-18 | 2019-08-23 | 苏州微纳激光光子技术有限公司 | A kind of day blind ultraviolet imagery background Xanthophyll cycle optical system and method |
| CN110261747A (en) * | 2019-07-10 | 2019-09-20 | 重庆大学 | Ultraviolet discharge detector bearing calibration and device based on standard discharging model |
| CN110261747B (en) * | 2019-07-10 | 2020-09-08 | 重庆大学 | Ultraviolet discharge detector correction method and device based on standard discharge model |
| CN111157110A (en) * | 2020-01-15 | 2020-05-15 | 上海电气输配电试验中心有限公司 | Photon counting space density calculation method for ultraviolet imaging and imaging equipment thereof |
| CN112255512A (en) * | 2020-10-10 | 2021-01-22 | 福州润森电气自动化有限公司 | Solar blind ultraviolet imaging device with laser ranging function and photon counting method |
| CN113777451A (en) * | 2021-09-12 | 2021-12-10 | 华北电力大学 | Method for judging corona initial voltage by utilizing photon number based on discharge ultraviolet image |
| CN113721118A (en) * | 2021-09-26 | 2021-11-30 | 华北电力大学 | Ultraviolet imaging simulation experiment device for discharge of burr type defect on surface of conducting wire |
| CN114002566A (en) * | 2021-11-09 | 2022-02-01 | 国网山东省电力公司电力科学研究院 | Partial discharge detection device and method based on multi-light fusion |
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