CN204203404U - The real-time identification system of lightning fault based on ultraviolet corona detector - Google Patents
The real-time identification system of lightning fault based on ultraviolet corona detector Download PDFInfo
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- CN204203404U CN204203404U CN201420408877.XU CN201420408877U CN204203404U CN 204203404 U CN204203404 U CN 204203404U CN 201420408877 U CN201420408877 U CN 201420408877U CN 204203404 U CN204203404 U CN 204203404U
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Abstract
The utility model discloses the real-time identification system of a kind of lightning fault based on ultraviolet corona detector, comprise, the ultraviolet data acquisition unit being arranged on the thunder and lightning signal on electric power line pole tower cross-arm and the thunder and lightning category identification unit being arranged on transformer station inside, ultraviolet data acquisition unit and the thunder and lightning category identification unit of thunder and lightning signal pass through dedicated radio link, beneficial effect is, ultraviolet is utilized to realize the on-line checkingi of thunder and lightning near high-voltage transmission line pole tower, effectively can observe the discharge scenario of thunder and lightning near shaft tower, there is continuous detecting, at a distance, do not have a power failure, do not contact, the feature such as not disintegrate, the detection means of a kind of advanced person is provided to power circuit state-detection, and then instruct high-voltage transmission line pole tower to take specific aim stronger, the lightning protection measures that lightning protection effect is good, the utility model manufacture craft is simple, small investment, instant effect, workable, be applicable to the large-scale promotion application that transmission line of electricity implements the measure of lightning protection prediction scheme.
Description
Technical field
The utility model relates to power equipment professional skill field; Particularly relate to the real-time identification system of a kind of lightning fault based on ultraviolet corona detector.
Background technology
In recent years, along with the continuous enhancing of global warming trend, city transmission line lightning stroke trip-out rate remains high; But, the development of a modern line urban distribution network is had higher requirement to power supply reliability again, power grid enterprises take multiple Lightning stroke Protection Measures for Over-Head Lines for existing lightning strike accident, typically have, erection lightning conducter, installation leakage conductor, erection coupling ground wire, reduction pole tower ground resistance etc., above-mentioned unitized lightning protection measures brings high, the goodish situation of lightning protection effect of investment.The generation of lightning strike accident, development have certain dispersiveness and statistically, the type decided of the lightning fault validity of lightning protection measures.Therefore, industry active demand is easily sent out the lightning fault of transmission line of electricity and is a little carried out fault type discriminating, and does statistical study, and then the lightning protection measures that specific aim is comparatively strong, lightning protection effect is good is taked in guidance.
Transmission line of lightning strike fault comprises the lightning stroke process of shielding and counterattack.Wherein shielding lightning stroke process is that the lightning conducter that thunder and lightning is walked around above electrical lead hits electrical lead, i.e. lightning shielding failure procedure.Lightning wave is propagated in row ripple mode on electrical lead, and flashover occurs at the insulator chain place walking to shaft tower, and then forms stable discharging electric arc, causes shielding thunderbolt trip accident.The counterattack lightning stroke process of thunder and lightning is that thunder and lightning hits shaft tower or lightning conducter, lightning conducter serves effective thunder and lightning interception function, when thunder and lightning walks to shaft tower place at lightning-arrest above-the-line promotion, due to pole tower ground resistance and shaft tower impedance reason, cause the cross arm of tower place current potential of insulator chain higher than electrical lead current potential, there is flashover, and then cause stable discharging electric arc, cause counterattack lightning stroke trip accident.The discharge process of two kinds of different lightning fault types is different, and around shocking for discharge to cross arm of tower through insulator chain from wire; Counterattack thunder is that cross arm of tower starts through the electric discharge of insulator chain guiding line, and ultraviolet imagery technology can catch the electronics trace in discharge process, and then imaging.Ultraviolet wavelength coverage is 40 ~ 400nm.Also containing ultraviolet in sunshine, but absorb the component of part wavelength due to the ozonosphere of the earth, be in fact radiated ground solar ultraviolet spectrum all at more than 300nm, the wavelength region may lower than 300nm is called solar blind.People utilize this feature, work out daylight (blind area) type ultraviolet detector.The service band of this instrument, between 240 ~ 280nm, can carry out testing in the sun, more easy to detect than infrared imaging.
From imaging analysis electronics trace, by identifying the discharge process of thunder and lightning, differentiate that the thunderbolt of shaft tower is around shocking, or counterattack thunder, thus, can Judging fault easily to send out a fault at shaft tower place be shielding thunderbolt trip accident, or counterattack lightning stroke trip accident.
Utility model content
Technical problem to be solved in the utility model is, provides a kind of lightning fault based on ultraviolet corona detector real-time identification system.
The technical scheme that the utility model adopts is, the real-time identification system of a kind of lightning fault based on ultraviolet corona detector, comprise, the ultraviolet data acquisition unit being arranged on the thunder and lightning signal on electric power line pole tower cross-arm and the thunder and lightning category identification unit being arranged on transformer station inside, described thunder and lightning signal ultraviolet data acquisition unit and thunder and lightning category identification unit pass through dedicated radio link.
The ultraviolet data acquisition unit of described thunder and lightning signal, comprises, the ultraviolet imaging unit be electrically connected successively, UV image frame unit, image transforming unit and image transmission module unit; Each circuit unit in the ultraviolet data acquisition unit that described solar-electricity source unit is thunder and lightning signal provides electric power, and the geometric center of insulator chain on electric power line pole tower cross-arm is aimed at the visual field center of ultraviolet imaging unit, and observed range is 3-5 rice.
Described thunder and lightning category identification unit, comprises, the image receiver module unit be electrically connected successively, image identification unit and lightning fault type identification unit.
Described ultraviolet imaging unit adopts SONY XCDSX910UV ultraviolet C CD video camera; The JZ8-xx series wireless data transmission module that image transmission module unit and image receiver module unit adopt Ji Zhuo Science and Technology Ltd. of Shenzhen to produce.
The beneficial effects of the utility model are, ultraviolet is utilized to realize the on-line checkingi of thunder and lightning near high-voltage transmission line pole tower, effectively can observe the discharge scenario of thunder and lightning near shaft tower, there is continuous detecting, at a distance, do not have a power failure, do not contact, the feature such as not disintegrate, the detection means of a kind of advanced person is provided to power circuit state-detection, and then instruct high-voltage transmission line pole tower to take specific aim stronger, the lightning protection measures that lightning protection effect is good, the utility model manufacture craft is simple, small investment, instant effect, workable, be applicable to the large-scale promotion application that transmission line of electricity implements the measure of lightning protection prediction scheme.
Accompanying drawing explanation
Fig. 1 is the insulator chain place ultraviolet image schematic diagram of counterattack thunder and lightning at shaft tower;
Fig. 2 is the insulator chain place ultraviolet image schematic diagram of shielding thunder and lightning at shaft tower;
Fig. 3 is the block scheme of the utility model based on the real-time identification system of lightning fault of ultraviolet corona detector;
Fig. 4 is the electrical schematic diagram of the image transforming unit circuit of the utility model ultraviolet image;
Fig. 5 is the level diagram of the image transforming unit of the utility model ultraviolet image;
Fig. 6 is the image schematic diagram of strikeing back thunder and lightning after the process of the utility model ultraviolet imagery;
Fig. 7 is the image schematic diagram of shielding thunder and lightning after the process of the utility model ultraviolet imagery.
In figure:
10, ultraviolet data acquisition unit 20, solar-electricity source unit
30, ultraviolet imaging unit 32, UV image frame unit
35, image transforming unit 40, image transmission module unit
50, thunder and lightning category identification unit 60, image receiver module unit
70, image identification unit 80, lightning fault type identification unit.
Embodiment
Below in conjunction with the drawings and specific embodiments, the utility model is described in further detail:
As shown in Figure 3, the utility model is based on the real-time identification system of lightning fault of ultraviolet corona detector, comprise, be arranged on the ultraviolet data acquisition unit 10 of the thunder and lightning signal on electric power line pole tower cross-arm and be arranged on the thunder and lightning category identification unit 50 of transformer station inside, ultraviolet data acquisition unit 10 and the thunder and lightning category identification unit 50 of described thunder and lightning signal pass through dedicated radio link.
The ultraviolet data acquisition unit 10 of described thunder and lightning signal, comprises, the ultraviolet imaging unit 30 be electrically connected successively, UV image frame unit 32, image transforming unit 35 and image transmission module unit 40; Each circuit unit in the ultraviolet data acquisition unit 10 that described solar-electricity source unit 20 is thunder and lightning signal provides electric power.Described ultraviolet imaging unit 30 adopts SONY XCDSX910UV ultraviolet C CD video camera, 1280 * 960 SXGA 15fps; Every two field picture is 1280 *, 960 some compositions, formation 15 two field picture per second.Ultraviolet imaging unit 30 is hung on the top of shaft tower insulator chain usually, adjacent with bird-scaring unit, solar-electricity source unit 20 is arranged on the sunny side of shaft tower, the geometric center of insulator chain on electric power line pole tower cross-arm is aimed at the visual field center of ultraviolet imaging unit 30, and observed range is 3-5 rice.
As shown in Figure 1 and Figure 2, the white portion in ultraviolet image is image formed by ionization light-emitting zone, and its brightness changes, strength of discharge its brighter display stronger with lightning discharge intensity.
As shown in Figures 4 to 7, according to above-mentioned characteristic, image transforming unit 35, that is, the pre-process circuit of ultraviolet image, this circuit adopts Digital Image Processing algorithm to be extracted image parameter for the quantification to testing result, image is also converted to gray level image by continuous or random cut-away view picture frame from video, then adopt Threshold segmentation that image is converted to bianry image, i.e. " 1 " or " 0 ", thus achieve the segmentation of hot spot luminance area, meanwhile, decrease the volume of transmitted data of image transmission module unit 40 and image receiver module unit 60.Image transforming unit 35 is made up of two integrated transporting dischargings, and input voltage ui receives the in-phase input end of amplifier Al and the inverting input of A2 respectively, and reference voltage UH and UL is added in the inverting input of Al and the in-phase input end of A2 respectively.The output terminal of two integrated transporting dischargings, respectively by being connected in parallel after a diode, becomes the output terminal of image transforming unit 35.
As input voltage ui>URH, the output uO2=-UOM of the output uO1=+UOM of ui>URL, integrated transporting discharging A1, A2.Diode D1 conducting D2 is ended, and stabilivolt DZ is operated in voltage stabilizing state, output voltage uO=+UZ.As input voltage ui<URL, the output uO2=+UOM of the output uO1=-UOM of ui<URH, integrated transporting discharging A1, A2.Diode D2 conducting D1 is ended, and stabilivolt DZ is operated in voltage stabilizing state, output voltage uO=+UZ.As URL<ui<URH, uO1=uO2=-UOM, so D1 and D2 all ends, stabilivolt ends, uO=0.URH and URL is respectively two threshold voltages becoming image transforming unit 35, if URH and URL is all greater than zero, then transport property as shown in Figure 5.
Definition " 1 " is highlight bar, " 0 " is blackening district, on each picture frame, counterattack thunder and lightning in the ultraviolet image feature at the insulator chain place of shaft tower is, highlight bar concentrates on the top of each picture frame of intercepting, and shielding thunder and lightning in the ultraviolet image feature at the insulator chain place of shaft tower is, highlight bar concentrates on the below of each picture frame of intercepting.
Described thunder and lightning category identification unit 50, comprises, the image receiver module unit 60 be electrically connected successively, image identification unit 70 and lightning fault type identification unit 80.The JZ8-xx series wireless data transmission module that image transmission module unit 40 and image receiver module unit 60 adopt Ji Zhuo Science and Technology Ltd. of Shenzhen to produce.This module adopts SI4432 chip, and bare board volume is little, facilitates embedded use.Strong interference immunity, and be with filtering circuit, receiving sensitivity is high, and power is large, and transmit reliable and stable, transmitting range is far away.This module adopts the modulation system of GFSK, and sighting distance transmitting distance can reach 3000m; Its interface mode can be: TTL, RS-232, RS-485 interface; Data transmit-receive conversion automatically complete, as long as to interface receive/send out data, switching time is short; Can be used for point-to-point, point-to-multipoint, the multiple combinations of communication mode such as how point-to-point; Longer Frame can be transmitted; The aerial false data produced is fallen in automatic fitration, Long-Time Service good reliability, failure rate is low.
Transmission line of lightning strike has dispersed and statistically, different shaft towers is in different mima type microreliefs, often change at different fault types in season and differ, differentiate in real time for lightning fault with regard to needs, by adding up the lightning fault characteristic of certain shaft tower, and then instruct the thunder And Lightning Preventive Measures decision-making of transmission line of electricity.Image identification unit 70 and lightning fault type identification unit 80 are by adding up the Frame after a thunderstorm, timely discrimination lightning fault type, namely, highlight bar above each Frame or below, the lightning fault type of highlight bar above each Frame is the fault type that counterattack thunder causes shaft tower, and highlight bar is the fault type that around shocking causes shaft tower in the lightning fault type of the below of each Frame.
Also by after one or several thunderstorm season, the data statistics of the lightning fault type of certain shaft tower can be drawn, causes the lightning fault type of certain shaft tower normally to strike back thunder or around shocking, and then instruct the lightning protection measures taking specific aim stronger of shaft tower.
The utility model utilizes ultraviolet to realize the on-line checkingi of thunder and lightning near high-voltage transmission line pole tower, effectively can observe the discharge scenario of thunder and lightning near shaft tower, features such as there is continuous detecting, have a power failure at a distance, or not do not contact, do not disintegrate, the detection means of a kind of advanced person is provided to power circuit state-detection, and then instruct high-voltage transmission line pole tower to take the lightning protection measures that specific aim is comparatively strong, lightning protection effect is good, manufacture craft is simple, with low cost, workable, be suitable for the large-scale promotion application that power circuit implements lightning protection measures.
Claims (4)
1. the real-time identification system of the lightning fault based on ultraviolet corona detector, it is characterized in that, comprise, be arranged on the ultraviolet data acquisition unit (10) of the thunder and lightning signal on electric power line pole tower cross-arm and be arranged on the thunder and lightning category identification unit (50) of transformer station inside, described thunder and lightning signal ultraviolet data acquisition unit (10) and thunder and lightning category identification unit (50) pass through dedicated radio link; The ultraviolet data acquisition unit (10) of described thunder and lightning signal, comprises, the ultraviolet imaging unit (30) be electrically connected successively, UV image frame unit (32), image transforming unit (35) and image transmission module unit (40).
2. the real-time identification system of the lightning fault based on ultraviolet corona detector according to claim 1, it is characterized in that, each circuit unit in the ultraviolet data acquisition unit (10) that solar-electricity source unit (20) is thunder and lightning signal provides electric power, the geometric center of insulator chain on electric power line pole tower cross-arm is aimed at the visual field center of ultraviolet imaging unit (30), and observed range is 3-5 rice.
3. the real-time identification system of the lightning fault based on ultraviolet corona detector according to claim 1, it is characterized in that, described thunder and lightning category identification unit (50), comprise, the image receiver module unit (60) be electrically connected successively, image identification unit (70) and lightning fault type identification unit (80).
4. the real-time identification system of the lightning fault based on ultraviolet corona detector according to Claims 2 or 3, is characterized in that, described ultraviolet imaging unit (30) adopts SONY XCDSX910UV ultraviolet C CD video camera; The JZ8-xx series wireless data transmission module that image transmission module unit (40) and image receiver module unit (60) adopt Ji Zhuo Science and Technology Ltd. of Shenzhen to produce.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105614988A (en) * | 2016-03-07 | 2016-06-01 | 中国人民解放军总后勤部卫生部药品仪器检验所 | Novel jacket |
| CN106781179A (en) * | 2017-01-10 | 2017-05-31 | 国网浙江嵊州市供电公司 | A kind of mountain fire monitoring system |
| CN109799431A (en) * | 2019-01-28 | 2019-05-24 | 国网山东省电力公司潍坊供电公司 | Line insulator lightning fault localization method and device based on the strong light of Lightning transients |
-
2014
- 2014-07-23 CN CN201420408877.XU patent/CN204203404U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105614988A (en) * | 2016-03-07 | 2016-06-01 | 中国人民解放军总后勤部卫生部药品仪器检验所 | Novel jacket |
| CN105614988B (en) * | 2016-03-07 | 2018-01-12 | 中国人民解放军总后勤部卫生部药品仪器检验所 | A kind of jacket |
| CN106781179A (en) * | 2017-01-10 | 2017-05-31 | 国网浙江嵊州市供电公司 | A kind of mountain fire monitoring system |
| CN109799431A (en) * | 2019-01-28 | 2019-05-24 | 国网山东省电力公司潍坊供电公司 | Line insulator lightning fault localization method and device based on the strong light of Lightning transients |
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