CN107015128A - The device for detecting corona discharge of number of photons is compensated based on supersonic sounding - Google Patents
The device for detecting corona discharge of number of photons is compensated based on supersonic sounding Download PDFInfo
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- CN107015128A CN107015128A CN201710316983.3A CN201710316983A CN107015128A CN 107015128 A CN107015128 A CN 107015128A CN 201710316983 A CN201710316983 A CN 201710316983A CN 107015128 A CN107015128 A CN 107015128A
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- photons
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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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- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S15/00—Systems using the reflection or reradiation of acoustic waves, e.g. sonar systems
- G01S15/02—Systems using the reflection or reradiation of acoustic waves, e.g. sonar systems using reflection of acoustic waves
- G01S15/06—Systems determining the position data of a target
- G01S15/08—Systems for measuring distance only
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- Computer Networks & Wireless Communication (AREA)
- Testing Relating To Insulation (AREA)
Abstract
The present invention relates to a kind of device for detecting corona discharge that number of photons is compensated based on supersonic sounding, ultrasonic distance measuring module is housed on head, ultraviolet imager, CCD camera, vertical controlled motor is installed in head, horizontal controlled motor, CPU is received after host computer command signal, output control signal gives horizontal controlled motor, vertical controlled motor drives the head to position objective body to be measured, CPU connects canonical parameter memory module respectively, control system, ultrasonic distance measuring module, ultraviolet imager, number of photons is detected using ultraviolet imager, distance between ultraviolet imager and target object surface is obtained using ultrasound measurement module, the equivalent distances formula that this distance is substituted into useful photon number can obtain equivalent number of photons.The device can prevent that producing more space interference because of distance increase enters detecting system, makes the number of photons under different distance have comparativity, effectively improves the accuracy of ultraviolet partial discharge detection number of photons, and structure arrangement is simple, with higher practical value.
Description
Technical field
The present invention relates to a kind of device of ultraviolet imagery detection corona discharge number of photons, will day total blindness's ultraviolet imager with
Ultrasonic sensor modules are combined, and are carried out equivalent process to number of photons obtained by the detection at the different distance of objective body to be measured, are made
Under the equivalent observed range to unification of its result.
Background technology
It is well known that shelf depreciation is the main cause of Electric Power Equipment Insulation aging, and insulator rises in transmission line of electricity
Support wire, prevent that electric current from returning the effect on ground, therefore detected it is very necessary effectively in real time to it.Shelf depreciation
Often with electric discharge phenomena such as corona, electric arcs, and corona generally entails electric pulse, ultrasonic wave, light (predominantly ultraviolet light), part
The generation of heating, thus corona detection can effectively failure judgement position and strength of discharge.
Blind type ultraviolet imagery detection technology with the advantages of its noncontact, strong antijamming capability, high positioning precision extensively should
For in the detection of power system device corona discharge, wherein number of photons to be the pass of quantization strength of discharge in ultraviolet imagery detection technology
Bond parameter, and with instrument gain, detecting distance, the change of current impulse and change.In Practical Project, instrument gain and electric current
Pulse can be controlled in required value, but detecting distance can change because of position difference at corona discharge, as shown in figure 3, using purple
Outer imaging device carries out the imaging center point A and ultrasonic ranging central point B of discharge examination, test point and equipment to discharge equipment
Between distance be d1When output testing result be a, and when detecting distance be d2When testing result be b (a ＜ b), this result in detection knot
Fruit does not possess comparability, and the specific number of photons threshold value of ultraviolet imagery detection will also be difficult to determine.Therefore, being necessary to obtain quilt
The distance between measuring point and test point, and arrive number of photons is equivalent under unified gauged distance, eliminate distance factor and detection is tied
The influence of fruit.
At present, blind type ultraviolet imager can directly obtain the number of photons of corona discharge, but still need to artificial measuring instrument and arrive
Distance at electric discharge does not possess real-time to carry out after discharge strength assessment；Simultaneously because lack objective module, it is difficult
Exempt to cause to judge by accident due to staff's error to cause unnecessary loss, this is just in the urgent need to one possesses real-time, structure
Simply, the detection mode of simple operation.
The content of the invention
The present invention does not have comparability problem for the number of photons that current ultraviolet imager is detected under different distance, carries
Having gone out ultraviolet imager in a kind of corona detection device that number of photons is compensated based on ultrasonic ranging, the device can directly be detected
Power equipment corona discharge number of photons, the ultrasonic distance measuring module of transceiver can obtain observed range in real time, therefore, it is possible to and
When detect power equipment corona discharge number of photons, and obtain the equivalent number of photons under gauged distance.Meanwhile, ultrasonic ranging mould
Block also has that adaptive faculty is strong, simple in construction under adverse circumstances (such as dust), the features such as be easy to combine with ultraviolet imager, can
Effectively to solve existing ultraviolet imager number of photons comparativity and real-time monitoring problem.
To achieve the above object, the technical scheme is that：A kind of corona for compensating number of photons based on supersonic sounding is put
Electric detection means, including horizontal controlled motor, vertical controlled motor, ultrasonic distance measuring module, ultraviolet imager, head, CPU,
Wireless communication module, canonical parameter memory module, control system, the head top are respectively provided with ultrasonic distance measuring module, purple
Vertical controlled motor, horizontal controlled motor are installed, the head is arranged on fixed bottom in outer imager, CCD camera, the head
On seat；CPU in the head is received after host computer command signal, and output control signal is to horizontal controlled motor, vertical control
Motor drives head to position objective body to be measured, and the CPU connects canonical parameter memory module, control system, ultrasonic wave respectively
Range finder module, ultraviolet imager, for by the standard observation distance of setting be stored in canonical parameter memory module, by it is ultraviolet into
As instrument detects number of photons, by the distance between ultrasound measurement module acquisition ultraviolet imager and target object surface；The CPU leads to
Wireless communication module connection host computer is crossed, CPU measures measured point to the distance value of ultraviolet imager according to ultrasound measurement module, right
The number of photons that ultraviolet imager is detected under different distance carries out equivalent process, and the shadow caused is detected to number of photons to eliminate distance
Ring, the testing result under different detecting distances is possessed comparativity.
The ultrasound measurement module is consistent with the direction of ultraviolet imager, and both are fitted in cradle head structure head up and down
Centre position, and fixed with cushion socket.
The ultrasonic distance measuring module passes through the number of photons of acquisition the range data of acquisition, ultraviolet imager respectively
CPU is sent to control system, and CPU is equivalent to standard observation distance by number of photons by control system combined standard observed range
Under, then the result is uploaded to by host computer by wireless communication module.
Ultrasound measurement module is measured measured point to the distance value substitution equivalent distances formula of ultraviolet imager by the CPU：
gd0=gd1(d1/d0)1.222, wherein, d1For detecting distance, gd1For apart from d1Under the number of photons that detects, d0United for number of photons
One standard observation distance, gd0 is equivalent number of photons of the testing result under gauged distance d0, using formula by ultraviolet imager
Under the equivalent standard observation distance arrived of the number of photons observed result of acquisition.
The beneficial effects of the invention are as follows:
The present invention solves the problem of conventional electric power equipment detection electric discharge number of photons does not possess comparativity under different distance.
Using ultrasonic distance measuring module measure test point to range finder module distance, the distance be approximately equal to ultraviolet imager to test point it
Between distance, with this measured value by control system corrected modular system store observed range under, can be effectively by not
It is equivalent under unified parameters with the number of photons under measurement distance.Ageing and adaptability based on ultrasonic wave, the combination unit light
Subnumber compensation precision is high, practical.
Brief description of the drawings
Fig. 1 is the device for detecting corona discharge system block diagram that number of photons is compensated based on supersonic sounding of the invention；
Fig. 2 is the device for detecting corona discharge structural upright schematic diagram that number of photons is compensated based on supersonic sounding of the invention；
Fig. 3 is that ultraviolet imagery device carries out discharge examination schematic diagram to discharge equipment；
Fig. 4 is the device for detecting corona discharge embodiment stereochemical structure that number of photons is compensated based on supersonic sounding of the invention
Figure；
Fig. 5 is the device for detecting corona discharge specific workflow figure that number of photons is compensated based on supersonic sounding of the invention；
Fig. 6 is the ultraviolet imagery collection of illustrative plates of ultraviolet source.
Embodiment
The invention will be further described with embodiment below in conjunction with the accompanying drawings.
As shown in figure 1, a kind of device for detecting corona discharge system that number of photons is compensated based on supersonic sounding, including ultrasonic wave
Range finder module 1, ultraviolet imager 2, control system, horizontal controlled motor, vertical controlled motor, CPU, wireless communication module, mark
Quasi- parameter memory module, host computer.
Such as Fig. 2, shown in 4, head 5 is respectively provided with ultrasonic distance measuring module 1, ultraviolet imager 2, CCD camera 3, dissipated above
Hot mouth 4, firm banking 6, vertical controlled motor 7, horizontal controlled motor 8.
As shown in figure 5, the CPU in head 5 is received after host computer command signal, output control signal gives horizontal controlled motor
8th, vertical controlled motor 7 is to drive head 5 to position objective body to be measured, and the standard observation distance of setting is stored in into canonical parameter
In module；Canonical parameter memory module, control system, ultrasonic distance measuring module 1 are connected with CPU respectively, and according to supersonic sounding
Module 1 measures measured point to the distance value of ultraviolet imager 2, and the number of photons that ultraviolet imager under different distance 2 is detected is carried out
Equivalent process.
Ultrasonic distance measuring module 1, can use the position of ultraviolet imager location equipment partial discharge, then using ultrasonic ranging
Ultrasonic wave is launched in device aligning equipment partial discharge position, the ultrasonic signal for receiving to return using ultrasonic wave receiving module, by surveying
Amount ultrasonic wave time of return combination velocity of sound formula obtains detection range.Selected module of the present invention is single channel range finder module, works as receipts
Detection mode can be entered after to the effective instruction of main frame, after the response time as defined in waiting, reusing function reading can obtain
Range data is obtained, i.e., as the distance at ultraviolet imager to corona discharge, is exported by data wire.
The number of photons that the range data of the acquisition of ultrasonic distance measuring module 1, ultraviolet imager 2 are detected is sent by CPU respectively
To control system, the observed range of combined standard parameter memory module is unified number of photons equivalent arrive under observed range, then pass through
Result is uploaded to host computer by wireless communication module.
Ultrasonic distance measuring module 1, is analyzed from model KS109, using single channel range finder module SK109, when receiving
Detection mode can be entered after the effective instruction of main frame, wait after the defined response time, reuse function reading read register
Value, can obtain range data, i.e., as the distance at ultraviolet imager to corona discharge, then be exported by data wire.Day total blindness
Ultraviolet imager 2, its model ZF-S2 type ultraviolet imagers, resolution ratio be 600 × 480, visual field (H × V) be 5 ° ×
3.75 °, minimum ultraviolet luminous sensitivity is 3 × 10-18watt/cm2, can carry out number of photons to there is the power equipment of corona discharge
Detection.It is fixed on as shown in Fig. 2 ultrasonic distance measuring module 1 is fitted with ultraviolet imager about 2 on head 5, between the two
Away from very little, and ultrasonic wave uses receiver-transmitter integrated module, so the distance that ultrasonic distance measuring module 1 measures at electric discharge is approximately equal to
Distance at ultraviolet imager to electric discharge.Both respectively join measurement distance and number of photons with mark the observed range knot of storage system
Close to send to control system and substitute into apart from equivalent formulation, equivalent number of photons is sent to host computer by wireless WIFI again.
In specific detection, to ensure the validity of institute's light-metering subnumber, mended proposed by the present invention based on ultrasonic ranging
The corona discharge ultraviolet imagery detection number of photons equipment gain repaid is set to 15%, by adjusting horizontal vertical motor control head
So that objective body is in the angular field of view of ultraviolet imager and ultrasonic sensor.Detection insulator surface electricity as shown in Figure 4
Corona phenomenon, because ultrasonic distance measuring module 1, ultraviolet imager are installed and spacing very little about 2 so that ensure at electric discharge with
Range finder module apart from d1With at electric discharge to ultraviolet imager apart from d2It is identical, and distance parameter read by ranging software
Function is obtained from register.
Number of photons carries out synthesis acquisition by ultraviolet image and visible images by corresponding software in control system, such as schemes
6 show ultraviolet image synthesizes collection of illustrative plates with visible images, can obtain photon numbers at the electric discharge gathered under 15% gain and be
1500, distance is d between the target point and ultrasound measurement module that obtain in control system1=3m (actual range is 2.93m), mark
The observed range of quasi- memory module is set to d0=6m.
Because under same strength of discharge, with the increase of distance, ultraviolet image hot spot is gradually reduced, corresponding number of photons
Reduce therewith, therefore, it is necessary to which to enter row distance to number of photons equivalent during actual measurement.Present invention employs power function modification method
(bibliography：Wang Shenghui, Feng Hongen, rule side is into the distance correction of corona discharge ultraviolet imagery detection number of photons, high voltage skill
Art, 1 (41):194-201,2015), the equivalent formulation under different distance is：
gd0=gd1(d1/d0)1.222 (1)
Wherein, d1For detecting distance, gd1For apart from d1Under the number of photons that detects, d0Seen for the unified standard of number of photons
Ranging is from gd0 is equivalent number of photons of the testing result under gauged distance d0.Ultraviolet imager is apart from d1What=3m was obtained puts
Electric light subnumber gd1=1500, the equivalent observation to 6m of number of photons observed result obtained ultraviolet imager using formula (1) away from
From under, equivalent number of photons under gauged distance is 643, it is now equivalent after result there is comparability, Site Detection can be met
Need.
The present invention, can be effectively by photon using ultrasonic distance measuring module compensation ultraviolet imager detection corona discharge number of photons
Number is equivalent to be arrived under same observed range, testing result is had comparativity.While the device combination ultrasonic measuring distance technology and purple
Outer discharge detecting technique, the acoustooptical phenomenon produced using shelf depreciation, to realizing online ranging and to noncontact, remote condition
Under corona discharge strength assessment it is of great advantage.
Claims (4)
1. a kind of device for detecting corona discharge that number of photons is compensated based on supersonic sounding, including horizontal controlled motor (8), vertical control
Motor (7) processed, ultrasonic distance measuring module (1), ultraviolet imager (2), head (5), CPU, wireless communication module, canonical parameter are deposited
Store up module, control system, it is characterised in that：Head (5) top is respectively provided with ultrasonic distance measuring module (1), ultraviolet imagery
Vertical controlled motor (7), horizontal controlled motor (8), the head (5) are installed in instrument (2), CCD camera (3), the head (5)
On firm banking (6)；CPU in the head (5) is received after host computer command signal, and output control signal is to level
Controlled motor (8), vertical controlled motor (7) drive head (5) to position objective body to be measured, and the CPU connects standard ginseng respectively
Number memory modules, control system, ultrasonic distance measuring module (1), ultraviolet imager (2), for by the standard observation distance of setting
Canonical parameter memory module is stored in, number of photons is detected by ultraviolet imager (2), obtains purple by ultrasound measurement module (1)
Distance of the outer imager (2) between target object surface；The CPU connects host computer by wireless communication module, and CPU is according to super
Sound ranging module (1) measures measured point to the distance value of ultraviolet imager (2), and ultraviolet imager under different distance (2) is detected
Number of photons carry out equivalent process, the influence that causes is detected to number of photons to eliminate distance, makes the detection under different detecting distances
As a result possesses comparativity.
2. the device for detecting corona discharge according to claim 1 that number of photons is compensated based on supersonic sounding, it is characterised in that：
The ultrasound measurement module (1) is consistent with the direction of ultraviolet imager (2), and both are fitted in head (5) structure head up and down
Portion centre position, and fixed with cushion socket.
3. the device for detecting corona discharge according to claim 1 that number of photons is compensated based on supersonic sounding, it is characterised in that：
The number of photons of acquisition is passed through CPU by the range data of acquisition, ultraviolet imager (2) by the ultrasonic distance measuring module (1) respectively
Send to control system, CPU is by control system combined standard observed range, by under the equivalent distance to standard observation of number of photons,
The result is uploaded to by host computer by wireless communication module again.
4. the device for detecting corona discharge according to claim 3 that number of photons is compensated based on supersonic sounding, it is characterised in that：
Ultrasound measurement module (1) is measured measured point to the distance value substitution equivalent distances formula of ultraviolet imager (2) by the CPU：gd0
=gd1(d1/d0)1.222, wherein, d1For detecting distance, gd1For apart from d1Under the number of photons that detects, d0It is unified for number of photons
Standard observation distance, gd0 is equivalent number of photons of the testing result under gauged distance d0, using formula by ultraviolet imager
(2) under the equivalent standard observation distance arrived of number of photons observed result obtained.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710316983.3A CN107015128A (en) | 2017-05-08 | 2017-05-08 | The device for detecting corona discharge of number of photons is compensated based on supersonic sounding |
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| CN201710316983.3A CN107015128A (en) | 2017-05-08 | 2017-05-08 | The device for detecting corona discharge of number of photons is compensated based on supersonic sounding |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109709460A (en) * | 2019-02-11 | 2019-05-03 | 成都福森元光电科技有限公司 | A kind of blind type ultraviolet imagery system Photoncounting methods |
| TWI662289B (en) * | 2018-07-02 | 2019-06-11 | 廣達電腦股份有限公司 | Tracking distance measuring system and method thereof |
| CN112034315A (en) * | 2020-08-27 | 2020-12-04 | 中国南方电网有限责任公司超高压输电公司检修试验中心 | Hand-held charging type partial discharge detection positioning instrument |
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| CN105510787A (en) * | 2016-01-26 | 2016-04-20 | 国网上海市电力公司 | Portable ultrasonic, infrared and ultraviolet detector based on image synthesis technology |
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| CN202049219U (en) * | 2011-04-18 | 2011-11-23 | 成都凯迈科技有限公司 | Detecting device based on ultraviolet photon corona detection method |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| TWI662289B (en) * | 2018-07-02 | 2019-06-11 | 廣達電腦股份有限公司 | Tracking distance measuring system and method thereof |
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| CN112034315A (en) * | 2020-08-27 | 2020-12-04 | 中国南方电网有限责任公司超高压输电公司检修试验中心 | Hand-held charging type partial discharge detection positioning instrument |
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