CN102499227A - CT (current transducer) energy acquisition-based ultrasonic bird repelling device for series compensation platform - Google Patents
CT (current transducer) energy acquisition-based ultrasonic bird repelling device for series compensation platform Download PDFInfo
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- CN102499227A CN102499227A CN2011103008730A CN201110300873A CN102499227A CN 102499227 A CN102499227 A CN 102499227A CN 2011103008730 A CN2011103008730 A CN 2011103008730A CN 201110300873 A CN201110300873 A CN 201110300873A CN 102499227 A CN102499227 A CN 102499227A
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Abstract
The invention provides a CT (current transducer) energy acquisition-based ultrasonic bird repelling device for a series compensation platform, and can effectively prevent and control the problem of bird trouble of a series capacitor compensation device. In the ultrasonic bird repelling device, a circuit energy acquisition CT is adopted to supply power, large current passing through a circuit is converted into a required current, the current passes through an isolated CT realize electrical isolation, the high frequency part of power frequency current is filtered by virtue of a low-pass filter, direct current voltage is rectified and output by virtue of a rectifier, a high-frequency signal generator generates a high-frequency voltage signal between 16 and 25kHz immediately, and the high-frequency voltage signal is loaded to a piezoelectric ceramic plate of an ultrasonic speaker and is amplified to generate a high-volume ultrasonic wave which is between 16 and 25kHz and has a sound pressure level not lower than 90dB by virtue of the speaker. According to the bird repelling device, the energy acquisition CT is used as a power supply to guarantee stable high-power output, so that all-weather 24-hour uninterrupted large-area bird repelling is guaranteed; and a mode that two ultrasonic speakers are connected in parallel is adopted, and ultrasonic wave with variable frequencies is alternately and continuously generated, so that birds cannot adapt to the ultrasonic wave, and the durability of bird repelling effect is guaranteed.
Description
Technical field
The invention belongs to electric equipment protection device field, specifically relate to a kind of based on CT get can series compensation platform use the supersonic wave bird driving device.
Background technology
In high pressure, super-pressure and even extra-high voltage electric power Equipment Design process, should take into full account birds and nest, peck at etc., and take effectively to drive the bird measure and weaken or eliminate power system and the safety of power equipment operation and the adverse effect of reliability.Guaranteeing to drive under the prerequisite of bird effect, also should prevent the injury that improper measures possibly cause wild birds.Current, the scarer of in power transmission and transforming equipment, using and technology mainly contain pneumatic reflective mirror bird-scaring unit, voice bird-scaring unit, high-voltage electronic pulse electric shock and drive bird, capacitor discharge and produce empty quick-fried, high light and drive bird and drive bird and sting etc.
Pneumatic reflective mirror bird-scaring unit is a bird-scaring unit the earliest, and its principle is under wind action, and the wind bowl reflective mirror on the bird-scaring unit rotates and reaches the purpose of threatening birds.The characteristics of such scarer are cheap.
At present, on transmission line of electricity, using scarer the most extensive and relatively simple for structure is pneumatic reflective mirror scarer.This scarer generally is placed in the transmission pole top of tower, and reflex reflector lens and connecting rod thereof rotate with the wind, utilizes rotation, reflection ray irradiation and birds self mirror image of connecting rod to deter birds.But this scarer has following three shortcomings, the one, and effect is relatively poor under calm or cloudy environment, and the 2nd, birds can adapt to after a period of time, and the 3rd, after being influenced by wind and weather and sand and dust etc. out of doors, can damage in device.The scarer widespread usage of other type schemes such as the cry of acupuncture, machinery swing, radium-shine laser, birds wail sound and natural enemy, ultrasonic, high-voltage pulse electric shock, but also all be to only limit to transmission line of electricity.To power equipment, series capacitor compensation equipment particularly, scarer is not also seen practical application.
The voice bird-scaring unit is the bird-scaring unit that utilizes fabrication techniques such as speech chip or MP3; The birds wail sound of played pre-recorded and/or the cry of birds natural enemy are frightened birds; Characteristics are to have the fulminant bird effect of driving, but because the kind of bird is a lot, and the kind in the sound bank of domestic birds is limited; So birds can adapt within a short period of time.The power of voice bird-scaring unit is big, and service life is short, is applied in power transmission and transformation unit and also can causes noise pollution.
High-voltage pulse electric shock bird-scaring unit; Be to utilize electrion electric shock birds; For example application number is CN201020545346.7, and denomination of invention is the utility model patent of " a kind of electric shock bird-scaring unit that utilizes the line influence power supply ", and the scarer power supply is used the line influence power taking; After the AC power process rectifying and wave-filtering voltage stabilizing of taking out, give the power supply of a big capacity energy-storage travelling wave tube charging back as booster circuit.Booster circuit can change to the low-voltage direct of 3-5V the high pressure more than the 6000V, falls on the charged electrode that is installed on the shaft tower cross-arm when bird, is shied after the electric shock immediately.The method can work the mischief to birds, simultaneously to maintainer's security presence hidden danger.This device has certain bird effect of driving, but its bird scope of driving is extremely limited, has only bird to drop on competence exertion effect on its pole plate, and service life is short, and may damage birds.When being used for the iron tower of power transmission and transformation unit, also can make troubles and some potential safety hazards to iron tower maintenance up and down.
Capacitor discharge produces that empty quick-fried to drive bird with high light be to utilize capacitor discharge to produce empty detonans and high light, thereby drives birds, has and necessarily drives the bird effect; For example application number is CN200620095701.9; Denomination of invention is the utility model patent of " a kind of sound, light, machine scarer ", adopts high voltage pulse to ignite the storage capacitor discharge, produces the flash of light of explosive sound and forceful electric power; Air blast promotes to drive the bird hand and does mechanical action simultaneously; Reach sound, light, mechanical triple bird effects of driving, this device sphere of action reaches 200 meters, can realize remote operation.But its bird scope of driving is extremely limited, and high light also receives its angle limits.Because the capacitor discharge immediate current is very big, so service life is shorter.
Supersonic wave bird driving device worsens the living environment of bird through sending ultrasonic, makes it away from iron tower, and effect is lasting; Low in energy consumption, than the dependable performance of sound bird-scaring unit, supersonic wave bird driving device is quieter than sound bird-scaring unit, and its maintenance is littler than sound bird-scaring unit.Research about the supersonic wave bird driving device begins; Application number as far back as application in 2003 is CN200320112896.X; Denomination of invention is the utility model patent of " supersonic wave bird driving device ", and major function is to utilize singlechip technology, sends the ultrasonic of a certain frequency immediately; Birds are upset and leave present place, comprise power unit, timing reset circuit, main control unit part, driving and phonation unit part.This device circuit is complicated, causes manufacturing cost to improve.
Application number is CN200820202817.7; Denomination of invention is the utility model patent of " power system bird-scaring unit "; Device adopts single-chip microcomputer to send the nervous system of ultrasonic stimulation birds; Destroy the living environment of birds, and, make birds to adapt to owing to adopt ultrasonic frequency and the different working mechanism that constantly changes.But the lasting power supply of needs of device, it is bigger to consume energy.
Application number is CN201020680925.2; Denomination of invention is the utility model patent of " ultra-high-tension power transmission line supersonic wave bird driving device "; Relate to a kind of ultra-high-tension power transmission line supersonic wave bird driving device, device utilizes photovoltaic cell module and accumulator as power supply, cooperates ultrasonic and light emitting diode acting in conjunction that birds are had spread effect; Simultaneously through the hyperacoustic wavelength of the regular or irregular adjustment of control device, can prevent the harm that birds are caused transmission line of electricity.The power supply device of this device has photovoltaic cell module and accumulator two parts; When continuous rainy weather, can only energy be provided by accumulator; And the electric energy of accumulator is limited, needs manual detection accumulator dump energy, does not have the situation that electricity and overcast and rainy scarer can't operate as normal to avoid accumulator.
In sum; The scarer know-why that has at present obtained to use differs; Result of use also is not quite similar, and is applicable to equipment such as power transmission and transformation iron towers more, and the bird technology of driving that series compensation platform is used then is not seen in the document of publishing with research of installing and application.
String mends that device generally all is installed in open-air transformer station or string is mended in the station, and its surrounding enviroment are away from the city, and are meagrely-populated, is avian reproduction, movable good place.In recent years, the dynamics of China environmental protection is strengthened day by day, and wildlifes such as birds are also increasing, and the bird pest problem of thereupon bringing can not be ignored.How primary equipments such as the MOV (metal oxide pressure-limiting device) of string benefit device, spark gap are arranged on the series compensation platform that is made up of support insulator and oblique sliding insulator in the open.Tiltedly draw composite insulator and composite bushing MOV to realize insulation function by composite insulation outer coat, the composite of these rubber materials damages because of pecking at of birds easily, because of birds are nested, the ight soil of birds also may cause electric flashover.Birds get into spark gap, then are easy to cause the malfunction accident of spark gap.Series compensation platform also is the zone that invaded and harassed by birds; Because the platform area is bigger; Between capacitor pack support top, the capacitor pack support and capacitor pack support below, the steel construction plane of platform and various utilizable plane or lead top all possibly suffer filthy influences such as the nesting of birds, activity and ight soil.In a word, bird pest possibly become the influence string and mend one of hidden danger of device and even power system security reliability service, and this seems particularly outstanding in the movable frequent zone of some birds, and the safe and reliable operation that whole string is mended device and even power system brings hidden danger.
Summary of the invention
The object of the invention be to provide a kind of based on CT get can series compensation platform use the supersonic wave bird driving device; Adopt the ultrasonic mode to drive bird,, can realize driving bird on a large scale satisfying under the strict demand prerequisite of series capacitor compensation apparatus platform to field intensity and flashover; Promptly guarantee protection to MOV (metal oxide pressure-limiting device); Take into account other equipment on the series compensation platform again, device get can the unit dependable performance, can realize that round-the-clock 24 hours continual large tracts of land drive bird; And scarer can not work the mischief to birds, mends the device maintenance personal can for string yet and bring potential safety hazard.
The basic principle of supersonic wave bird driving device is that the ultrasonic that sends outside human auditory's scope is driven birds.
For realizing the foregoing invention purpose, the technical scheme that the present invention takes is:
A kind of based on CT get can series compensation platform use the supersonic wave bird driving device, its improvements are that said scarer comprises that circuit is got can CT and bird-scaring unit; It can CT be the bus-type structure that said circuit is got, and comprises Secondary Winding and shell, and said Secondary Winding places enclosure; Said bird-scaring unit comprises isolates CT, low pass filter, rectifier, high voltage silicon rectifier stack, HF signal generator and ultrasonic speaker, and said bird-scaring unit adopts the metal-back encapsulation.
Wherein: said scarer adopts circuit to get can the CT power supply, and electric current said the isolations CT realization electrical isolation of flowing through is through the HFS of low pass filter filters out power current; Through the rectifier rectification output dc voltage; HF signal generator generates high-frequency voltage signal immediately, and high-frequency voltage signal is loaded on the piezoelectric ceramic piece of ultrasonic speaker, and piezoelectric ceramic piece produces mechanical oscillation; Amplify through ultrasonic speaker, send ultrasonic.
Wherein: it can CT be straight-through current transformer that said circuit is got, and comprises two Secondary Winding, is equipped with iron core in the coil of Secondary Winding; Said Secondary Winding adopts epoxy resin to be cast in shell.
Wherein: after said bird-scaring unit adopts the metal-back encapsulation, leave circuit and get the incoming line of ability CT and the line outlet of ultrasonic speaker.
Wherein: parallel connection inserts said high voltage silicon rectifier stack between said rectifier and the HF signal generator.
Wherein: the winding and the Secondary Winding of screen layer are set in the middle of said isolation CT comprises, winding coil seals with being stained with pine.
Wherein: said low pass filter adopts the twin-stage co-mode coil.
Wherein: said high voltage silicon rectifier stack is composed in series by kenotron.
Wherein: said bird-scaring unit and circuit are got and can be arranged on the same support by CT, or are arranged on the different supports.
Wherein: when on the series capacitor compensation device, using said scarer, scarer is positioned over metal oxide pressure-limiting device group periphery, or is positioned over spark gap or capacitor group periphery.
Owing to adopted technique scheme, compared with prior art, beneficial effect of the present invention comprises:
1) gets and equipment performance to stablize
The power supply of bird-scaring unit adopts the ability CT equipment of getting commonly used on the series compensation platform; It is simple in structure and non-maintaining not fragile to get ability CT; Do not receive sunlight and climatic effect, the big and energy supply of power output is stable, has guaranteed that round-the-clock 24 hours continual large tracts of land of bird-scaring unit drive the bird effect;
2) effectiveness of bird-scaring unit is good
The whole metal-back that adopts of bird-scaring unit encapsulates; The surface only leave get can CT incoming line and the outlet of ultrasonic speaker; Guaranteed that farthest the inner high-frequency signal of bird-scaring unit can not cause interference to secondary devices such as measure case on the platform, met on the platform equipment the requirement of electromagnetic shielding;
3) the supersonic wave bird driving mode is applicable to string benefit device more
String will make a noise when mending device operation itself, and birds give a blood-curdling scream and the effect of cry in the noisy environment of device own of natural enemy can be had a greatly reduced quality, and near the staff also may disturbing; Bird-scaring unit adopts the ultrasonic mode to drive bird, than the dependable performance of sound bird-scaring unit; String is mended complex equipments on the apparatus platform, and it is numerous to be subject to the position that bird pest threatens, and the supersonic wave bird driving mode has solved mechanical pendulous device and radium-shine laser can only drive bird among a small circle, and that can not satisfy that string mends device drives the bird requirement; The supersonic wave bird driving mode has been avoided the discharge of high-voltage electric shock device to mend device itself to string and has been brought infringement in addition, has satisfied string and has mended the strict demand of apparatus platform to field intensity and flashover;
4) the bird-scaring unit circuit design is reasonable, long service life
Inner at bird-scaring unit, parallel connection inserts high voltage silicon rectifier stack between rectifier and the HF signal generator, and breakdown diode was realized bypass when voltage was excessive, prevents to damage because of the line current disturbance causes the IC circuit of HF signal generator;
5) it is big to drive the bird scope
Because the principle that ultrasonic is to all the winds propagated in medium, the position that two ultrasonic speakers of bird-scaring unit are mended on the apparatus platform at string had both guaranteed that concentrated energy came emphasis that MOV is launched ultrasonic, can take into account other equipment on the platform again;
6) be difficult for being adapted to by birds
Bird-scaring unit adopts the mode of two ultrasonic speaker parallel connections, through the control signal of HF signal generator, alternately sends the ultrasonic of change of frequency continuously, has guaranteed that ultrasonic is not adapted to by birds, has guaranteed to drive the persistence of bird effect;
7) versatility is good
It is the bird-scaring unit to the series capacitor compensation device that the string benefit is used based on the supersonic wave bird driving apparatus of getting ability CT; Also can be at fault current limiter etc. other have circuit and get and can use on the power equipment of condition; Only need to change get can CT parameter and the position of adjustment bird-scaring unit get final product, have good versatility;
8) the scarer volume is little, power is big, cheap
Description of drawings
Below in conjunction with accompanying drawing the present invention is further specified.
Fig. 1 string is mended the supersonic wave bird driving device of using based on getting ability CT;
The position view of Fig. 2 scarer on series compensation platform;
The position side schematic view of Fig. 3 scarer on series compensation platform;
Fig. 4 scarer the support reformation sketch map;
Fig. 5 scarer the support reformation side schematic view;
Wherein: the CT-current transformer; The GAP-spark gap; The MOV-metal oxide pressure-limiting device; The LPE-low pass filter; The IC-HF signal generator.
Embodiment
Below in conjunction with instance the present invention is carried out detailed explanation.
The supersonic wave bird driving device that the present invention proposes utilizes circuit CT to get can provide the scarecrow device energy needed.Realize electrical isolation through isolating CT earlier; Then through the low pass filter filters out high-frequency harmonic; Produce DC voltage through rectifier again and supply power to HF signal generator, HF signal generator produces the high-frequency voltage signal of 16kHz～25kHz immediately, and high-frequency voltage signal is loaded on the piezoelectric ceramics of ultrasonic speaker and produces mechanical oscillation; Amplify to produce the big volume ultrasonic that 16kHz～25kHz, sound pressure level are not less than 90dB through loudspeaker, realize the effect of expulsion birds.The present invention is joining the supersonic wave bird driving device of using on the power capacitor reactive compensation installation first.
The supersonic wave bird driving device of this patent invention can be launched high-power ultrasonics; Cover the solid space at whole flat and whole device place; Reduce string greatly and mend the probability that device receives the birds infringement, can not cause noise pollution, also can not damage birds to environment.Because series compensation platform and ground are high-insulations, thus on the platform power supply of equipment take usually circuit get can and optical fiber send the mode of ability.Supersonic wave bird driving device adopts circuit to get and can supply power by CT; The electromagnetic induction principle of the big electric current that flows through in the circuit through coil obtained needed electric current; Electric current is flowed through and is isolated CT realization electrical isolation; Pass through the HFS of low pass filter filters out power current then; Through the required DC voltage of rectifier rectification output HF signal generator, HF signal generator generates the high-frequency voltage signal of 16kHz～25kHz immediately then, and high-frequency voltage signal is loaded on the piezoelectric ceramic piece of ultrasonic speaker.Because piezo-electric effect, piezoelectric ceramic piece produces mechanical oscillation, is not less than the big volume ultrasonic of 90dB through loudspeaker amplification generation 16kHz～25kHz, sound pressure level.Bird-scaring unit adopts the mode of two ultrasonic speaker parallel connections, through the control signal of HF signal generator, alternately sends the ultrasonic of change of frequency continuously, guarantees that ultrasonic is not adapted to by birds, has guaranteed to drive the persistence of bird effect.
The metal shell of bird-scaring unit is realized integrally closed, has good electromagnetic shielding, the surface only leave get can CT incoming line and the outlet sound mouth of ultrasonic speaker.Two ultrasonic speaker symmetric arrays arranged side by side are in a side of MOV group separately, and are in the centre position emission ultrasonic of MOV height, and the arrangement of bird-scaring unit is as much as possible near platform edges, and particular location is referring to Fig. 2.Mend the equipment that receives bird pest threat maximum in the device because MOV is a string, such position arrangement can concentrate the emission ultrasonic to protect to MOV, also can take into account miscellaneous equipment on the platform simultaneously.
Circuit is got ability CT:
Circuit get can CT be the straight-through current transformer that is installed in the low-voltage bus bar line side, its operating frequency 50Hz adopts casting insulatedly, and secondary coil is taked good electromagnetic shielding measure.Circuit is got and can be had dry type, little, in light weight, the non-maintaining advantage of volume by CT, and is suitable for outdoor installation, and design is all meeting relevant criterion aspect being suitable for.It can the CT overall structure be bus-type that circuit is got, and mainly is made up of shell and Secondary Winding.Secondary Winding places in the screening can, and is cast in shielding case with epoxy resin, and the enclosing cover of shielding case is fastening with hexagon socket head cap screw and shielding case, leaves the secondary connection box in the bottom of shell.A winding (bus) passes from the center, hole in the middle of the transformer.Circuit get can the CT shell and series compensation platform between current potential be zero, and have two independently Secondary Winding, promptly each secondary coil respectively has iron core.The screening can material that circuit is got ability CT is a cast aluminium, and its surface transition is slick and sly, roughness is consistent.After the screening can assembling, require good seal performance.Secondary outlet terminal (comprising bolt, nut, pad etc.) is processed with copper or copper alloy, and reliable antirust coat is arranged.The humidity resistance of secondary leading-out terminal daughter board should be good.Circuit is got and can be required through seal tightness test, power frequency withstand test, the test of turn-to-turn overvoltage, error type approval test and error routine inspection by CT.
Isolate CT:
Isolate the electrical isolation that CT (containing iron core) realizes getting ability CT and bird-scaring unit mainframe box, its operating frequency is 50Hz, and saturation current is 2 times of rated current.Add screen layer between the winding of isolation CT, the Secondary Winding, and go out to go between to ground wire terminal, insulating requirements realizes that 3000V is withstand voltage, and winding coil requires with being stained with the pine sealing.
Low pass filter:
Low pass filter adopts high-performance AC power line filter DGC-10AJ, and its operating frequency is 50Hz.Wave filter adopts the twin-stage co-mode coil, has very big (CM/DM) and inserts loss, has good common mode and DM EMI rejection characteristic, can suppress various high frequency transient effectively and disturb, and satisfies FCC B level and the requirement of GJB 9254B level.
Rectifier:
Rectifier is that model is the bridge rectifier of KBPC25-10, and maximum operating currenbt is 25A, and inverse peak voltage is 1000V.
High voltage silicon rectifier stack:
The model of high voltage silicon rectifier stack is 2DLW10A/10V, carries radiator, is composed in series by many kenotrons (silicon grain), plays the effect of direct current pressure limiting, is used to protect the IC circuit of HF signal generator.
HF signal generator:
HF signal generator is based on high-frequency signal generation integrated circuit and the signal amplification circuit of DSP TMS320F28335, and by the DC-voltage supply of rectifier output, high-frequency signal is immediately a voltage signal in 16kHz～25kHz scope.
Ultrasonic speaker:
The model of ultrasonic speaker is KS-5120, and operating frequency 20 ± 5kHz meets the scope of driving the bird frequency of 16kHz～25kHz.The typical position of ultrasonic speaker is organized near the intersection point on longitudinal axis (vertical with the long limit of series compensation platform) and the long limit of series compensation platform at MOV, also can be arranged near spark gap, the capacitor group.
The support system of bird-scaring unit adopts the material identical with the CT support, also can make bird-scaring unit and CT use the CT stent support side by side through transforming the CT support.
Invention has been described according to specific exemplary embodiment here.It will be conspicuous under not departing from the scope of the present invention, carrying out suitable replacement to one skilled in the art or revise.Exemplary embodiment only is illustrative, rather than to the restriction of scope of the present invention, scope of the present invention is by appended claim definition.
Claims (10)
- One kind based on CT get can series compensation platform use the supersonic wave bird driving device, it is characterized in that said scarer comprises that circuit is got can CT and bird-scaring unit; It can CT be the bus-type structure that said circuit is got, and comprises Secondary Winding and shell, and said Secondary Winding places enclosure; Said bird-scaring unit comprises isolates CT, low pass filter, rectifier, high voltage silicon rectifier stack, HF signal generator and ultrasonic speaker, and said bird-scaring unit adopts the metal-back encapsulation.
- 2. as claimed in claim 1 a kind of based on CT get can series compensation platform use the supersonic wave bird driving device; It is characterized in that said scarer adopts circuit to get can the CT power supply, and electric current said the isolations CT realization electrical isolation of flowing through is through the HFS of low pass filter filters out power current; Through the rectifier rectification output dc voltage; HF signal generator generates high-frequency voltage signal immediately, and high-frequency voltage signal is loaded on the piezoelectric ceramic piece of ultrasonic speaker, and piezoelectric ceramic piece produces mechanical oscillation; Amplify through ultrasonic speaker, send ultrasonic.
- 3. as claimed in claim 1 a kind of based on CT get can series compensation platform use the supersonic wave bird driving device, it is characterized in that said circuit get can CT be straight-through current transformer, comprise two Secondary Winding, be equipped with iron core in the coil of Secondary Winding; Said Secondary Winding adopts epoxy resin to be cast in shell.
- 4. as claimed in claim 1 a kind of based on CT get can series compensation platform use the supersonic wave bird driving device, it is characterized in that said bird-scaring unit adopts the metal-back encapsulation after, leave circuit get can CT incoming line and the line outlet of ultrasonic speaker.
- 5. as claimed in claim 1 a kind of based on CT get can series compensation platform use the supersonic wave bird driving device, it is characterized in that between said rectifier and the HF signal generator that parallel connection inserts said high voltage silicon rectifier stack.
- 6. as claimed in claim 1 a kind of based on CT get can series compensation platform use the supersonic wave bird driving device, it is characterized in that said isolation CT is provided with the winding and the Secondary Winding of screen layer in the middle of comprising, winding coil seals with being stained with pine.
- 7. as claimed in claim 1 a kind of based on CT get can series compensation platform use the supersonic wave bird driving device, it is characterized in that said low pass filter adopts the twin-stage co-mode coil.
- 8. as claimed in claim 1 a kind of based on CT get can series compensation platform use the supersonic wave bird driving device, it is characterized in that said high voltage silicon rectifier stack is composed in series by kenotron.
- 9. as claimed in claim 1 a kind of based on CT get can series compensation platform use the supersonic wave bird driving device, it is characterized in that said bird-scaring unit and circuit get ability CT and can be arranged on the same support, or be arranged on the different supports.
- 10. as claimed in claim 1 a kind of based on CT get can series compensation platform use the supersonic wave bird driving device; When it is characterized in that on the series capacitor compensation device, using said scarer; Scarer is positioned over metal oxide pressure-limiting device group periphery, or is positioned over spark gap or capacitor group periphery.
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| CN201110300873.0A CN102499227B (en) | 2011-09-29 | 2011-09-29 | CT (current transducer) energy acquisition-based ultrasonic bird repelling device for series compensation platform |
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| US8934319B2 (en) | 2012-10-18 | 2015-01-13 | Bird-B-Gone, Inc. | Portable noisemaker |
| CN104396935A (en) * | 2014-11-24 | 2015-03-11 | 广西高农机械有限公司 | Ultrasonic bird dispeller |
| CN107800198A (en) * | 2017-11-21 | 2018-03-13 | 中国电力科学研究院有限公司 | A kind of power supply and its control method for series compensation device power supply |
| CN108512172A (en) * | 2018-05-28 | 2018-09-07 | 鼎力联合（深圳）高新技术有限公司 | Scarer and bird repellent method |
| CN109077051A (en) * | 2018-10-01 | 2018-12-25 | 国网山东省电力公司枣庄供电公司 | A kind of induction charging type bird-scaring unit device |
| CN111513054A (en) * | 2020-04-09 | 2020-08-11 | 国家电网有限公司 | Bird repelling method and bird repelling device based on ultrasonic waves |
| CN111901702A (en) * | 2020-09-03 | 2020-11-06 | 朝长明 | Signal receiving and transmitting device for 5G base station construction |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8934319B2 (en) | 2012-10-18 | 2015-01-13 | Bird-B-Gone, Inc. | Portable noisemaker |
| CN104396935A (en) * | 2014-11-24 | 2015-03-11 | 广西高农机械有限公司 | Ultrasonic bird dispeller |
| CN107800198A (en) * | 2017-11-21 | 2018-03-13 | 中国电力科学研究院有限公司 | A kind of power supply and its control method for series compensation device power supply |
| CN108512172A (en) * | 2018-05-28 | 2018-09-07 | 鼎力联合（深圳）高新技术有限公司 | Scarer and bird repellent method |
| CN109077051A (en) * | 2018-10-01 | 2018-12-25 | 国网山东省电力公司枣庄供电公司 | A kind of induction charging type bird-scaring unit device |
| CN111513054A (en) * | 2020-04-09 | 2020-08-11 | 国家电网有限公司 | Bird repelling method and bird repelling device based on ultrasonic waves |
| CN111513054B (en) * | 2020-04-09 | 2022-08-02 | 国家电网有限公司 | Bird repelling method and bird repelling device based on ultrasonic waves |
| CN111901702A (en) * | 2020-09-03 | 2020-11-06 | 朝长明 | Signal receiving and transmitting device for 5G base station construction |
| CN111901702B (en) * | 2020-09-03 | 2022-05-06 | 北京华航测通科技有限公司 | Signal receiving and transmitting device for 5G base station construction |
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| CN102499227B (en) | 2014-05-07 |
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