CN103675626B - Photon type location ultraviolet detection method - Google Patents
Photon type location ultraviolet detection method Download PDFInfo
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- CN103675626B CN103675626B CN201310722677.1A CN201310722677A CN103675626B CN 103675626 B CN103675626 B CN 103675626B CN 201310722677 A CN201310722677 A CN 201310722677A CN 103675626 B CN103675626 B CN 103675626B
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Abstract
A kind of photon type location ultraviolet detection method, comprise the steps: a, the external discharge position of detected device is found and/or located: b, the ultraviolet photon that the external discharge position of detected device produces to be gathered: while described image-forming module is found and/or navigated to the external discharge position of detected device, ultraviolet photon gathers the ultraviolet photon that described in Structure Receive, external discharge position produces, and converts digital signal to; C, signal send: described image-forming module and described ultraviolet photon gather structure by sending module, send to background processing system respectively.The present invention is owing to have employed image-forming module and ultraviolet focal-plane, find by the external discharge position of non-contacting mode to detected device and/or locate, and the ultraviolet photon that outside discharge part position produces is counted simultaneously, there is cost low, easy of integration, high sensitivity, high reliability and simple operation and other advantages.
Description
Technical field
The corona discharge that the present invention relates to power transmission and transforming equipment outside detects applied technical field, particularly relates to a kind of photon type location ultraviolet detection method.
Background technology
The insulating medium of power equipment, under enough strong electric field action, can discharge within the scope of the corona of its outside, and this electric discharge does not form conductive channel only to cause the insulation corona short circuit between conductor and is limited.Corona discharge all can have some to affect on insulating medium each time, and the impact of slight corona discharge on Electric Power Equipment Insulation is less, and the decline of dielectric strength is slower; And strong corona discharge, then dielectric strength can be made to decline very soon.Therefore, corona discharge is the main cause causing the deterioration of power transmission and transforming equipment insulating medium, and monitoring corona discharge amount can assess the duty of power transmission and transforming equipment insulating medium.This corona discharge is also corona discharge, can produce ultraviolet photon in the process of corona discharge, and its ultraviolet light intensity (ultraviolet light subnumber) and corona discharge amount are contacted directly.How detecting corona discharge amount early will be an important topic of electric power netting safe running.To formulate and the strict detection code of execution science is the Main Means ensureing electric power netting safe running, but at present mainly by manual inspection, manual inspection often can not discovery power transmission and transforming equipment corona discharge promptly and accurately and accident defect.
The main flow of current detection corona discharge is for using ultraviolet imager, but this detection technique can only detect qualitatively to corona discharge, its principle is by carrying out image calculating to ultraviolet hot spot, draw the coarse value of discharging light subnumber value, so can not the defect level of embodiment device trouble spot really.And can not carry out in real time, detecting accurately to power equipment, ensure safe operation.
Summary of the invention
In order to overcome the problems referred to above, the present invention to society provide a kind of accurately can draw corona discharge time the photon type ultraviolet detection method of ultraviolet light subnumber that produces.
Technical scheme of the present invention is: provide a kind of photon type to locate ultraviolet detection method, comprise the steps:
A, the external discharge position of detected device is found and/or is located:
Find and/or locate the external discharge position of detected device with image-forming module, and obtain the image of the detected device at least containing external discharge position;
B, the ultraviolet photon that the external discharge position of detected device produces to be gathered:
While described image-forming module is found and/or navigated to the external discharge position of detected device, ultraviolet photon gathers the ultraviolet photon that described in Structure Receive, external discharge position produces, and converts described ultraviolet photon signal to digital signal;
C, signal send:
Described image-forming module and described ultraviolet photon gather structure by sending module, respectively described image and described digital signal are sent to background processing system.
As improvement of the present invention, described ultraviolet photon gathers structure and comprises optical system, ultraviolet filter and ultraviolet focal-plane successively, described ultraviolet focal-plane and digital processing system are electrically connected, described ultraviolet filter is configured to only allow ultraviolet photon to pass through, described ultraviolet focal-plane converts the ultraviolet photon signal received to simulating signal, and described digital processing system converts described simulating signal to digital signal.
As improvement of the present invention, also comprise data storing steps, arrange a memory module be electrically connected with described sending module, described image-forming module, described ultraviolet photon gather structure and described image, described digital signal are stored in described memory module respectively.
As improvement of the present invention, described image-forming module is Visible-light CCD image-forming module or visible ray cmos imaging module.
The present invention is owing to have employed image-forming module and ultraviolet focal-plane, find by the external discharge position of non-contacting mode to detected device and/or locate, and the ultraviolet photon that outside discharge part position produces is counted simultaneously, thus know the defect level at detected device fault point (electric discharge position) exactly, there is cost low, easy of integration, high sensitivity, high reliability and simple operation and other advantages.
Accompanying drawing explanation
Fig. 1 is the perspective view of the present invention when being connected with mount pad.
Fig. 2 is photon type location ultraviolet detector square frame principle schematic diagram in Fig. 1.
Wherein: 1. optical system; 2. ultraviolet filter; 3. ultraviolet focal-plane; 4. digital processing system; 5. memory module; 6. sending module; 7. image-forming module; 8. ultraviolet photon gathers structure; 100. photon type location ultraviolet detectors; 200. mount pad.
Embodiment
The invention provides a kind of photon type location ultraviolet detection method, comprise the steps:
A, the external discharge position of detected device is found and/or is located:
Find and/or locate the external discharge position of detected device with image-forming module, and obtain the image of the detected device at least containing external discharge position;
B, the ultraviolet photon that the external discharge position of detected device produces to be gathered:
While described image-forming module is found and/or navigated to the external discharge position of detected device, ultraviolet photon gathers the ultraviolet photon that described in Structure Receive, external discharge position produces, and converts described ultraviolet photon signal to digital signal;
C, signal send:
Described image-forming module and described ultraviolet photon gather structure by sending module, respectively described image and described digital signal are sent to background processing system.Then background processing system is by software computing with after analyzing, user is shown to by display interface, user just can obtain from display interface the quantity that external discharge position produces ultraviolet photon intuitively, thus knows the defect level of detected device fault point exactly.
In the ultraviolet detection method of photon type location, to the external discharge position of of a detected device position, the quantity of ultraviolet photon and the position at external discharge position can be detected simultaneously.Also to the external discharge position of multiple positions of detected device, multiple position can be detected simultaneously and sends the quantity of ultraviolet photon and the position at external discharge position.
In the ultraviolet detection method of photon type location, described ultraviolet photon gathers structure and comprises the optical system, ultraviolet filter and the ultraviolet focal-plane that set gradually, described ultraviolet focal-plane and digital processing system are electrically connected, described ultraviolet filter is configured to only allow ultraviolet photon to pass through, filter the bias light in visible ray, described ultraviolet focal-plane converts the ultraviolet photon signal received to simulating signal, and described simulating signal is by converting digital signal to after described digital processing system.
In the ultraviolet detection method of photon type location, also comprise data storing steps, arrange a memory module be electrically connected with described sending module, described image-forming module, described ultraviolet photon gather structure and described image, described digital signal are stored in described memory module respectively.Described image-forming module is Visible-light CCD image-forming module or visible ray cmos imaging module.
When detecting the external discharge position of detected device, described image-forming module obtains in the image (visible images) of detected device, at least comprise described external discharge position, the visual field shown in described image is more than or equal to described external discharge position, and the one-tenth frame of described image-forming module aims at described external discharge position.Described image-forming module receive the described external discharge position aimed at by described one-tenth frame the ultraviolet photon that produces.The benefit of such operation is, very accurately can must know position and its ultraviolet light subnumber produced at described external discharge position, thus know the defect level at detected device fault point (electric discharge position) accurately.
In said method, described ultraviolet focal-plane adopts back illumination photodiode array and silicon sensing circuit in preparation, is obtained the ultraviolet FPA blended together by indium bump joining mode.Described ultraviolet focal-plane can also be mutually integrated with ultraviolet focal-plane array with diffractive microlens array, described diffractive microlens array and ultraviolet focal-plane array phase integrated technology, it is the making carrying out diffraction microlens array on the same chip of ultraviolet focal-plane array, diffraction lens array is prepared in the back side of ultraviolet focal-plane array, and adopting double-sided alignment technology, the fine process of combination multicoating and stripping prepares diffraction microlens array.Described double-sided alignment technology comprises the two-sided photoetching technique simultaneously exposed, or one side exposes, the photoetching technique of the infrared aligning of reverse side, or the photoetching technique that one side exposes, reverse side is aimed at split field.
Refer to Fig. 1 and Fig. 2, what Fig. 1 and Fig. 2 disclosed is a kind of photon type location ultraviolet detector use figure and frame principle figure thereof, comprise photon type location ultraviolet detector 100 and mount pad 200, described photon type location ultraviolet detector 100 is arranged on described mount pad 200, described photon type location ultraviolet detector 100 can rotate or rotate on described mount pad 200, thus carries out periodical inspection to detected device.Described photon type location ultraviolet detector 100 comprises image-forming module 7, ultraviolet photon gathers structure 8 and sending module 5, described image-forming module 7 is found and/or is located the external discharge position of detected device, and obtain the image (visible images) of the detected device at least containing described external discharge position, described ultraviolet photon gathers the ultraviolet photon that structure 8 receives the generation of described external discharge position simultaneously, described ultraviolet photon gathers structure 8 and converts ultraviolet photon signal to digital signal, described image and described digital signal send to background processing system by described sending module 5.
In the present embodiment, described ultraviolet photon gathers structure 8 and comprises the optical system 1, ultraviolet filter 2 and the ultraviolet focal-plane 3 that set gradually, described ultraviolet focal-plane 3 is electrically connected with digital processing system 4, described ultraviolet filter 2 is configured to only allow ultraviolet photon to pass through, and filters other bias lights in visible ray.Described ultraviolet focal-plane 3 converts the ultraviolet photon signal received to simulating signal, and described simulating signal is by converting digital signal to after described digital processing system 4.
In the present embodiment, described photon type location ultraviolet detector 100 also comprises the memory module 5 be electrically connected with described sending module 6, and described image-forming module 7, described ultraviolet photon gather structure 8 and described image, described digital signal be stored in described memory module 5 respectively.Described sending module 6 is wireless network communication module and/or serial communication module.Described image-forming module 7 is Visible-light CCD image-forming module or visible ray cmos imaging module, and described image-forming module 7 can also replace with ultraviolet imager or ultraviolet camera.
In the present embodiment, described image-forming module 7 and described ultraviolet photon gather structure 8 radial direction and arrange in space, and namely described image-forming module 7 is arranged on described ultraviolet photon and gathers the top of structure 8, below, left or right.When detecting the external discharge position of detected device, the frame that becomes that one-tenth frame and the described ultraviolet photon of described image-forming module 7 gather structure 8 aims at described external discharge position simultaneously, and send to background processing system to process the described image obtained and described digital signal, although there is certain error in this method, but background processing system is by after carrying out certain correction to described error, described error is negligible, do not affect the relevant informations such as the position at described external discharge position and its ultraviolet light subnumber produced, thus know the defect level at detected device fault point (electric discharge position) accurately.
In the present embodiment, beam splitter can also be comprised, described beam splitter is arranged on the front of described image-forming module 7 and described ultraviolet photon collection structure 8, the light beam entering into described photon type location ultraviolet detector 100 is divided into the identical light beam of two-way by described beam splitter, one road light beam is received by described image-forming module 7, and another road light beam is gathered structure 8 by described ultraviolet photon and receives.The benefit of such design is, described image-forming module 7 and described ultraviolet photon gather structure 8 and can detect the external discharge position of detected device simultaneously, and what can ensure that described image-forming module 7 and described ultraviolet photon gather that structure 8 detects is identical point, the relevant information such as the position at described external discharge position and its ultraviolet light subnumber produced more accurately, thus know the defect level at detected device fault point (electric discharge position) accurately.
The effect of described beam splitter the light beam of input is divided into two bundles or multi-beam (being referred to as beamlet or son bundle), and these beamlets can export along required direction.Beamlet can be the light beam that power is equal, also can be the light beam of different capacity, to meet the needs of different application.
In the present embodiment, to the external discharge position of of a detected device position, the quantity of ultraviolet photon and the position at described external discharge position can be detected simultaneously.Also to the external discharge position of multiple positions of detected device, multiple position can be detected simultaneously and sends the quantity of ultraviolet photon and the position at described external discharge position.
In the present embodiment, completely reflecting mirror can also be comprised, described full transmitting mirror is arranged on the middle position of described optical system 1, the described a part of light beam (ultraviolet photon and/or sunshine) entering into described photon type location ultraviolet detector 100 will reflex on spectroscope through described completely reflecting mirror, the photon of described dichroic mirror is received by described image-forming module 7, and another part light beam is gathered structure 8 by described ultraviolet photon and receives.
In the present embodiment, what the preparation of described ultraviolet focal-plane 3 adopted is back illumination photodiode array and silicon sensing circuit, is obtained the technology of the ultraviolet FPA blended together by indium bump joining mode.Because gallium nitride (GaN) is that ultraviolet focal-plane all grows on a sapphire substrate, due to the character of sapphire insulation, ultraviolet focal-plane array can not collect signal through substrate as silicon-based detector, therefore ultraviolet focal-plane array must be detector back side induced radiation, and front is connected with silicon sensing circuit.
Described ultraviolet focal-plane 3 can also be mutually integrated with ultraviolet focal-plane array with diffractive microlens array, described diffractive microlens array and ultraviolet focal-plane array phase integrated technology, it is the making carrying out diffraction microlens array on the same chip of ultraviolet focal-plane array, diffraction lens array is prepared in the back side of ultraviolet focal-plane array, and adopting double-sided alignment technology, the fine process of combination multicoating and stripping prepares diffraction microlens array.Double-sided alignment technology comprises the two-sided photoetching technique simultaneously exposed, or one side exposes, the photoetching technique of the infrared aligning of reverse side, or the photoetching technique that one side exposes, reverse side is aimed at split field.
Described diffractive microlens array collects mutually with ultraviolet focal-plane array, the performance of described ultraviolet focal-plane 3 can be improved, described ultraviolet focal-plane array and the integrated detector of small size that makes of described micro lens array have large photosensistive surface detector sensitivity, and described ultraviolet focal-plane array is GaN/AlGaN(aluminum gallium nitride) p-i-n type back-illuminated type 32 × 32 ultraviolet focal-plane array.Described ultraviolet focal-plane 3 can receive one by one to photon, the ultraviolet photon numerical value then discharged in statistic processes.The sensitivity of described photon type location ultraviolet detector can reach 18 powers of 10, so accurately, in real time degree of discharge can be detected in early days.
Described photon type location ultraviolet detector 100 adopts high-performance ultraviolet focal-plane Detection Techniques, merged super low-power consumption technology simultaneously, the principle of this technology is for closing when can accomplish dormancy to the great described image-forming module 7 of power consumption, open during use, this mechanism can reduce the power consumption of described photon type location ultraviolet detector greatly again.The volume that described photon type locates ultraviolet detector is very little, can realize portable and on-line monitoring two kinds of working methods, achieves the function of remote measurement in real time and quantitative measurment active prevention.
Described photon type location ultraviolet detector 100 combines the principle absorbing ultraviolet light based on solute molecule, creates the frontier of power transmission and transforming equipment corona discharge UV detect.Meet the requirement of the electrical network extra-high voltage equipment UV detect such as high-voltage corona peculiar spectrum, hypersensitivity photon counting, corona location, technically, photon type location ultraviolet detector can be regarded as a professional high sensitivity and can locate corona detector.
Described photon type location ultraviolet detector 100 carries out periodical inspection to detected device, when finding that there is electric phenomenon the outside of detected device, detects at once to outside discharge part position.First, find with described image-forming module 7 and/or locate the external discharge position of detected device, and obtaining the image (visible images) of the detected device at least containing described external discharge position.Secondly, find and/or navigate to the described external discharge position of detected device at described image-forming module 7 while, described ultraviolet photon gathers structure 8 and receives only the ultraviolet photon produced from described external discharge position, and described ultraviolet photon gathers structure 8 and converts ultraviolet photon signal to digital signal.Finally, described image-forming module 7 and described ultraviolet photon gather structure 8 and described image and described digital signal are stored in described memory module 5, and send to background processing system by described sending module 6.Background processing system, by software computing with after analyzing, is shown to user by display interface, and user just can obtain from display interface the quantity that external discharge position produces ultraviolet photon intuitively, thus knows the defect level of detected device fault point exactly.
The present invention, owing to have employed described image-forming module 7 and described ultraviolet focal-plane 3, overcomes the shortcoming that traditional silicon ultraviolet strengthens the type sensors such as detector, ultravioplet photomultiplier, micro-channel plate detector, ultraviolet CCD.Meet the requirement of the electrical network extra-high voltage equipment UV detect such as high-voltage corona detection, hypersensitivity photon counting, corona location simultaneously.Described photon type location ultraviolet detector 100 cost is low, easy of integration, there are high sensitivity and high reliability, simple to operate, adopt the early discharge of non-contacting mode to the accident defect point of measured device carry out Measurement accuracy and accurately locate, and antistatic interference and anti-clutter interference ability strong.
Claims (4)
1. a photon type location ultraviolet detection method, is characterized in that, comprise the steps:
The external discharge position of detected device is found and/or is located:
Find and/or locate the external discharge position of detected device with image-forming module, and obtain the image of the detected device at least containing external discharge position;
The ultraviolet photon that the external discharge position of detected device produces is gathered:
While described image-forming module is found and/or navigated to the external discharge position of detected device, ultraviolet photon gathers the ultraviolet photon that described in Structure Receive, external discharge position produces, and converts described ultraviolet photon signal to digital signal;
Signal sends:
Described image-forming module and described ultraviolet photon gather structure by sending module, respectively described image and described digital signal are sent to background processing system.
2. photon type location according to claim 1 ultraviolet detection method, it is characterized in that: described ultraviolet photon gathers structure and comprises optical system, ultraviolet filter and ultraviolet focal-plane successively, described ultraviolet focal-plane and digital processing system are electrically connected, described ultraviolet filter is configured to only allow ultraviolet photon to pass through, described ultraviolet focal-plane converts the ultraviolet photon signal received to simulating signal, and described digital processing system converts described simulating signal to digital signal.
3. photon type location according to claim 1 and 2 ultraviolet detection method, it is characterized in that: also comprise data storing steps, arrange a memory module be electrically connected with described sending module, described image-forming module, described ultraviolet photon gather structure and described image, described digital signal are stored in described memory module respectively.
4. photon type location according to claim 1 and 2 ultraviolet detection method, is characterized in that: described image-forming module is Visible-light CCD image-forming module or visible ray cmos imaging module.
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| CN104111413B (en) * | 2014-07-18 | 2017-10-03 | 深圳供电局有限公司 | Device and method for evaluating corona discharge of power transmission and transformation equipment |
| CN105574950A (en) * | 2014-10-14 | 2016-05-11 | 深圳供电局有限公司 | Ultraviolet inspection method, handheld data acquisition equipment and server |
| CN105301455A (en) * | 2015-11-04 | 2016-02-03 | 上海电气电站设备有限公司 | All-weather large-scale turbonator stator winding corona accurate positioning method |
| 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 |
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| US6620347B1 (en) * | 1999-10-06 | 2003-09-16 | Coherent, Inc. | Crystalline filters for ultraviolet light sensors |
| CN101551435B (en) * | 2009-05-15 | 2011-06-08 | 湖北省电力试验研究院 | Method for detecting corona discharging and device thereof |
| CN101666852A (en) * | 2009-10-16 | 2010-03-10 | 曲娜 | Arcing and corona detection system for overhead power line with power supplied by induction current in high-voltage alternating electric field |
| CN201689138U (en) * | 2010-03-25 | 2010-12-29 | 浙江红相科技有限公司 | Solar-blinded ultraviolet imaging instrument based on narrow-band spectrum |
| CN102230952B (en) * | 2011-04-18 | 2014-11-19 | 成都凯迈科技有限公司 | Corona detection method based on ultraviolet photons |
| CN103424673A (en) * | 2013-06-17 | 2013-12-04 | 上海理工大学 | Corona detection system and corona detection method thereof |
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Effective date of registration: 20220307 Address after: 3 / F, unit 2, building 1, Yuehan international, 38 Jinye Road, high tech Zone, Xi'an, Shaanxi 710000 Patentee after: XI'AN SIMUL ELECTRIC Co.,Ltd. Address before: 518000 second and third floors, No. 1301-8 sightseeing Road, dabuxiang community, Guanlan new area, Shenzhen, Guangdong Patentee before: SHENZHEN SIMUL YINXING ELECTRICAL CO.,LTD. |