CN106596722A - Live-line detection method and device for insulator and detecting instrument - Google Patents
Live-line detection method and device for insulator and detecting instrument Download PDFInfo
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- CN106596722A CN106596722A CN201710002517.8A CN201710002517A CN106596722A CN 106596722 A CN106596722 A CN 106596722A CN 201710002517 A CN201710002517 A CN 201710002517A CN 106596722 A CN106596722 A CN 106596722A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N29/00—Investigating or analysing materials by the use of ultrasonic, sonic or infrasonic waves; Visualisation of the interior of objects by transmitting ultrasonic or sonic waves through the object
- G01N29/04—Analysing solids
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2291/00—Indexing codes associated with group G01N29/00
- G01N2291/02—Indexing codes associated with the analysed material
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- General Physics & Mathematics (AREA)
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- Investigating Or Analyzing Materials By The Use Of Ultrasonic Waves (AREA)
Abstract
The invention provides a live-line detection method and device for an insulator and a detecting instrument. The live-line detection method for the insulator includes the steps that excitation vibration waves of preset frequency are reflected to the bottom of the insulator to be detected, then acoustics resonance detection analysis software is utilized for analyzing feedback waves, for the excitation vibration waves, of the insulator, and then an analysis result is obtained. By the utilization of the method, live-line detection is achieved for the post insulator, economic loss caused by power cut overhauling is reduced, the working efficiency of an operation and maintenance worker is improved when the worker detects the defect of the insulator, and the labor intensity of the worker is lowered.
Description
Technical field
The application is related to technical field of electric power, more particularly to a kind of method of live detection insulator, device and detector.
Background technology
The improvement project of power equipment is constantly carried out, length of service near or above critical limit equipment proportional still
Right very high, especially high voltage distribution installation, including primary cut-out.Primary cut-out operation practice have shown that, affect its work
The vitals of reliability is support insulator, and its mechanical strength is the emphasis having to check for, and the destruction of insulator can cause to use
Family has a power failure or other accidents.
The working practice of many power grid enterprises and power station shows that the effective method for preventing this kind of destruction is in insulation
In sub- running, their defects outwardly and inwardly are found out.It is which that support insulator keeps the basic norm of its mechanical strength
Characteristic frequency in time do not change speciality.At present, typically adopt Non-Destructive Testing diagnostic techniquess both at home and abroad to judge porcelain pillar
Whether insulator is intact.
However, Non-Destructive Testing diagnostic techniquess need to have a power failure can just be detected, so bring very big inconvenient and certain
Economic loss, and exterior insulator and internal various crackles and mechanical strength cannot be detected in advance the defect such as reduce.
The content of the invention
This application provides a kind of method of live detection insulator, device and detector, are needed with overcoming in prior art
Has a power failure the isolator detecting that can just carry out, and so as to bring very big inconvenient and certain economic loss, and cannot examine in advance
Go out the problem of the defect such as exterior insulator and internal various crackles and mechanical strength reduction.
For achieving the above object, this application provides technical scheme below：
A kind of method of live detection insulator, including：By the base flange of insulator to be detected to described to be detected
The excited vibration ripple of the bottom emission predeterminated frequency of insulator；
Receive the feedback wave for the excited vibration ripple that the insulator to be measured sends；
The waveform frequency spectrum of feedback wave described in software analysis is tested and analyzed using acoustic resonance, analysis result is obtained.
Preferably, the analysis result includes：Whether the inside and outside of the insulator has crackle, the position of the crackle and institute
State the mechanical strength value of insulator to be detected.
Preferably, also include：The excited vibration ripple, the feedback wave and the analysis result are stored.
Preferably, also include：The analysis result is carried out into voice broadcast.
A kind of device of live detection insulator, including：
Transmitter unit, it is pre- to the bottom emission of the insulator to be detected for the base flange by insulator to be detected
If the excited vibration ripple of frequency；
Receiving unit, for receiving the feedback wave for the excited vibration ripple that the insulator to be measured sends；
Analytic unit, for the waveform frequency spectrum of feedback wave described in software analysis is tested and analyzed using acoustic resonance, is divided
Analysis result.
Preferably, the analysis result includes：Whether the inside and outside of the insulator has crackle, the position of the crackle and institute
State the mechanical strength value of insulator to be detected.
Preferably, also include：Memory element, for the excited vibration ripple, the feedback wave and the analysis are tied
Fruit is stored.
Preferably, also include：Voice broadcast unit, for the analysis result is carried out voice broadcast.
A kind of insulator detector, including：Insulated handle, shell and the as above live detection insulation described in any one
The device of son.
From above technical scheme, this application provides a kind of method of live detection insulator, device and detector,
Wherein, excited vibration ripple of the method for the live detection insulator by the bottom reflection predeterminated frequency to insulator to be detected,
Then the feedback wave that software analysis insulator is returned for excited vibration ripple is tested and analyzed using acoustic resonance, so as to be analyzed
As a result.The live detection of support insulator is the method achieved, the economic loss brought because of interruption maintenance is reduced, and is improve
The work efficiency that operation maintenance personnel is detected to defects of insulator, reduces the labor intensity of staff.
Description of the drawings
In order to be illustrated more clearly that the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing
Accompanying drawing to be used needed for having technology description is briefly described, it should be apparent that, drawings in the following description are only this
Inventive embodiment, for those of ordinary skill in the art, on the premise of not paying creative work, can be with basis
The accompanying drawing of offer obtains other accompanying drawings.
Fig. 1 is a kind of flow chart of the method for live detection insulator that the embodiment of the present application one is provided；
Fig. 2 is a kind of flow chart of the method for live detection insulator that the embodiment of the present application two is provided；
Fig. 3 is a kind of structural representation of the device of live detection insulator that the embodiment of the present application three is provided；
Fig. 4 is a kind of structural representation of the device of live detection insulator that the embodiment of the present application four is provided；
Fig. 5 is a kind of structural representation of insulator detector that the embodiment of the present application five is provided.
Specific embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Site preparation is described, it is clear that described embodiment is only a part of embodiment of the invention, rather than the embodiment of whole.It is based on
Embodiment in the present invention, it is every other that those of ordinary skill in the art are obtained under the premise of creative work is not made
Embodiment, belongs to the scope of protection of the invention.
Need in prior art power failure just carry out isolator detecting to overcome, it is very big inconvenient and certain so as to bring
Economic loss, and exterior insulator and internal various crackles and mechanical strength cannot be detected in advance the asking for defect such as reduce
Topic, this application provides a kind of method of live detection insulator, device and detector, concrete scheme is as described below：
Embodiment one
The embodiment of the present application one provides a kind of method of live detection insulator, as shown in figure 1, Fig. 1 is the application reality
The flow chart for applying a kind of method of live detection insulator of the offer of example one, the method include：
S101：By excitation from the base flange of insulator to be detected to the bottom emission predeterminated frequency of insulator to be detected
Vibration wave；
In this application, it is possible to use activator produce frequency be 1000～10000Hz random vibrations because, in frequency
For 1000～10000Hz when there is linear characteristic, and load to insulator with enough power.
S102：Receive the feedback wave for excited vibration ripple that insulator to be measured sends；
S103：The waveform frequency spectrum of software analysis feedback wave is tested and analyzed using acoustic resonance, analysis result is obtained.
By to insulator bottom emission special incentive vibration wave, while its vibrational feedback ripple is received, Jing special-purpose softwares, such as
Whether the waveform frequency spectrum that acoustic resonance detection and analysis software etc. carries out automatically analyzing the feedback wave is normal, you can judge the insulator
Inside and outside whether to have crackle, whether the general position of crackle, mechanical strength reduce or lose, and the defect such as whether insulator aging,
The accuracy of porcelain vase flaw detection, safety, practicality, high efficiency are lifted into new height, live detection porcelain vase crackle is realized, can
To avoid causing major accident because insulator fractures.
Vibroacoustics detection does not have theoretical direction and the practical basis for shaping at present in China still in blank stage,
There is no the instrument and equipment for shaping, need to carry out a series of research work.
The vibrational state of one object is different, and the sound for showing as sending is different, is vibrated due to them
Amplitude, the frequency of vibration, A vibrate the difference of duration and single vibration and complex vibration etc..These physical quantity with
The material of vibrating object is related to the performance of structure etc..Used as a vibrational system, in the case of single-frequency, machinery shakes
Dynamic fundamental equation is：
F=Zu
In formula, the driving force of F --- mechanical vibration
The vibration velocity of u --- particle
Z --- equivalent mechanical impedance
For
In formula, M represents equivalent mass, and C represents equivalent compliance, and R represents equivalent loss resistance, numerical value and the splicing state of Z
It is closely related.By measuring Z, or in mono- Timing measurement u of F, it is possible to which the vibration equivalent mechanical impedance of insulator is detected.
The damage status of support insulator can according to its mechanical strength be bearing capacity (support insulator destroy when most
Little stress) judging, and the mechanical strength value of support insulator can encourage sound wave by the certain frequency applied to insulator,
Assessment insulator is judged with the reaction power frequency spectrum of mechanical effect of vibration.
There is limit of rupture load in the bearing capacity of support insulator, calculate according to below equation：
P1/P0=(1/ ω 0 of ω) 2
In formula：P0 represents the ultimate load of unbroken insulator, and P1 represents the ultimate load of damaged insulator, ω
The mid frequency of the 0 dynamic respons frequency spectrum for representing unbroken insulator, ω 1 represent the dynamic respons frequency spectrum of damaged insulator
Mid frequency.
When a vibration signal is applied to insulator by base flange, it will be vibrated under its all of vibration shape,
The relative intensity of different shape depending on signal frequency and amplitude, therefore, vibration signal response is system all natural shapes frequency
Rate and the function of damping.Using 16 high-speed a/d (number-mould) conversions or digital transient capture equipment, system can be responded
Transient signal is stored in calculator memory in digital form.The data of storage can be processed after sensing, be obtained each
Plant the loagithmic decrement of mode.Fast Fourier transform method can also be adopted, amplitude versus time data are transformed into into amplitude-frequency
Rate data.Using above-mentioned technology, the response time record that can be hit produced by insulator becomes the frequency spectrum for responding.Such one
Come, in the natural frequency of the very indistinguishable tested insulator of time domain, be easy to from its maximum be recognized in frequency spectrum.
From above technical scheme, the embodiment of the present application one provides a kind of method of live detection insulator, passes through
To the excited vibration ripple of the bottom reflection predeterminated frequency of insulator to be detected, then software analysis are tested and analyzed using acoustic resonance
The feedback wave that insulator is returned for excited vibration ripple, so as to obtain analysis result.The method achieve the band of support insulator
Electric quick detection, reduces the economic loss brought because of interruption maintenance, and improves what operation maintenance personnel was detected to defects of insulator
Work efficiency, reduces the labor intensity of staff, and improves defects of insulator accuracy of detection, reduces because of detection meanss
The electric fault economic loss that deficiency causes.
Embodiment two
On the basis of embodiment one, the embodiment of the present application two provides a kind of side of more specifically live detection insulator
Method, as shown in Fig. 2 Fig. 2 is a kind of flow chart of the method for live detection insulator that the embodiment of the present application two is provided.The method
Including：
S101：By excitation from the base flange of insulator to be detected to the bottom emission predeterminated frequency of insulator to be detected
Vibration wave；
S102：Receive the feedback wave for excited vibration ripple that insulator to be measured sends；
S103：The waveform frequency spectrum of software analysis feedback wave is tested and analyzed using acoustic resonance, analysis result is obtained.
Wherein, analysis result includes：The inside and outside machine for whether having crackle, the position of crackle and insulator to be detected of insulator
Tool intensity level.
S104：Excited vibration ripple, feedback wave and analysis result are stored.
In the present embodiment, analysis result can be stored, so as to leave evidence, in order to follow-up examination.Specifically
, a number of measurement data of storage can be preset (such as 1000 groups, 2000 groups ... 7000 groups, up to 10000 groups etc., at this
Do not limit in application, can set according to actual needs), then directly empty data or deleted after being uploaded to host computer again；
Or, every Preset Time (such as 5 days, a week, two weeks etc., the application is not equally limited) carry out storage renewal, by upper
State scheme to reduce storing pressure.
In the present embodiment, step S105 can also be included：Analysis result is carried out into voice broadcast.
By analysis result is carried out voice broadcast, testing result can be informed into staff directly, so as to the people that works
Member prepares as early as possible, and when serious problems occurs in insulator to be needed to change, staff can prepare related tool in advance, to save
Time.
It should be noted that in this application, the order of step S104 and step S105 is not limited, that is, carry out voice and broadcast
Report is not sequentially limited with the time order and function that stored, can first be reported and be stored again, it is also possible to first store and report again, can be with
Report while storage.
Specifically, the present embodiment mutually can be referred to the same or analogous part of embodiment, no longer gone to live in the household of one's in-laws on getting married in the present embodiment
State.
Embodiment three
On the basis of embodiment one, present application example three provides a kind of device of live detection insulator, such as Fig. 3 institutes
Show, Fig. 3 is a kind of structural representation of the device of live detection insulator that the embodiment of the present application three is provided.The device includes：
Transmitter unit 201, receiving unit 202, while with transmitter unit 201, receive single 202 analytic units 203 being connected, wherein,
Transmitter unit 201, it is pre- to the bottom emission of insulator to be detected for the base flange by insulator to be detected
If the excited vibration ripple of frequency；
Receiving unit 202, for receiving the feedback wave for excited vibration ripple that insulator to be measured sends；
Analytic unit 203, for the waveform frequency spectrum of software analysis feedback wave is tested and analyzed using acoustic resonance, is analyzed
As a result.
Wherein, analysis result includes：The inside and outside machine for whether having crackle, the position of crackle and insulator to be detected of insulator
Tool intensity level.
The device of the live detection insulator provided by the present embodiment three is pre- by the bottom reflection to insulator to be detected
If the excited vibration ripple of frequency, then test and analyze what software analysis insulator was returned for excited vibration ripple using acoustic resonance
Feedback wave, so as to obtain analysis result.The powered quick detection of support insulator is the method achieved, is reduced because of interruption maintenance band
The economic loss come, and the work efficiency that operation maintenance personnel is detected to defects of insulator is improve, reduce the work of staff
Intensity, and defects of insulator accuracy of detection is improve, reduce the electric fault economic loss caused because of the deficiency of detection meanss.
Example IV
The embodiment of the present application four provides a kind of device with specific live detection insulator, as shown in figure 4, Fig. 4 Fig. 4
A kind of structural representation of the device of the live detection insulator provided for the embodiment of the present application four.The device includes：Transmitting is single
Unit 201, receiving unit 202, while with transmitter unit 201, receive single 202 analytic units 203 being connected, and analytic unit 203
Connected memory element 204, wherein,
Transmitter unit 201, it is pre- to the bottom emission of insulator to be detected for the base flange by insulator to be detected
If the excited vibration ripple of frequency；
Receiving unit 202, for receiving the feedback wave for excited vibration ripple that insulator to be measured sends；
Analytic unit 203, for the waveform frequency spectrum of software analysis feedback wave is tested and analyzed using acoustic resonance, is analyzed
As a result.
Wherein, analysis result includes：The inside and outside machine for whether having crackle, the position of crackle and insulator to be detected of insulator
Tool intensity level.
Memory element 204, for excited vibration ripple, feedback wave and analysis result are stored.
Specifically, the device can also include：The voice broadcast unit 205 being connected with analytic unit 203, for analyzing
As a result carry out voice broadcast.
Specifically, the present embodiment be based on the corresponding device of method described in embodiment two, it is same or similar where can
Mutually refer to, repeat no more in this application.
Embodiment five
The embodiment of the present application five provides a kind of insulator detector, including：Insulated handle 301, shell 302 and strictly according to the facts
The device 303 of the live detection insulator provided by example three or example IV any one is applied, wherein,
Shell 302 is used for the device 303 for holding live detection insulator to detect to insulator to be measured；
Insulated handle 301 is used for support housing 302, while being easy to staff hand-held.
Finally, in addition it is also necessary to explanation, herein, such as first and second or the like relational terms be used merely to by
One entity or operation are made a distinction with another entity or operation, and are not necessarily required or implied these entities or operation
Between there is any this actual relation or order.And, term " including ", "comprising" or its any other variant are anticipated
Covering including for nonexcludability, so that a series of process, method, article or equipment including key elements not only includes that
A little key elements, but also including other key elements being not expressly set out, or also include for this process, method, article or
The intrinsic key element of equipment.In the absence of more restrictions, the key element for being limited by sentence "including a ...", does not arrange
Except also there is other identical element in including the process of key element, method, article or equipment.
In this specification, each embodiment is described by the way of progressive, and what each embodiment was stressed is and other
The difference of embodiment, between each embodiment identical similar portion mutually referring to.
The foregoing description of the disclosed embodiments, enables professional and technical personnel in the field to realize or use the application.
Various modifications to these embodiments will be apparent for those skilled in the art, as defined herein
General Principle can be realized in the case of without departing from spirit herein or scope in other embodiments.Therefore, the application
The embodiments shown herein is not intended to be limited to, and is to fit to and principles disclosed herein and features of novelty phase one
The most wide scope for causing.
Claims (9)
1. a kind of method of live detection insulator, it is characterised in that include：
By excited vibration from the base flange of insulator to be detected to the bottom emission predeterminated frequency of the insulator to be detected
Ripple；
Receive the feedback wave for the excited vibration ripple that the insulator to be measured sends；
The waveform frequency spectrum of feedback wave described in software analysis is tested and analyzed using acoustic resonance, analysis result is obtained.
2. method according to claim 1, it is characterised in that the analysis result includes：Inside and outside the insulator it is
The no mechanical strength value for having crackle, the position of the crackle and the insulator to be detected.
3. method according to claim 1, it is characterised in that also include：By the excited vibration ripple, the feedback wave with
And the analysis result is stored.
4. method according to claim 1, it is characterised in that also include：The analysis result is carried out into voice broadcast.
5. a kind of device of live detection insulator, it is characterised in that include：
Transmitter unit, presets frequency to the bottom emission of the insulator to be detected for the base flange by insulator to be detected
The excited vibration ripple of rate；
Receiving unit, for receiving the feedback wave for the excited vibration ripple that the insulator to be measured sends；
Analytic unit, for the waveform frequency spectrum of feedback wave described in software analysis is tested and analyzed using acoustic resonance, obtains analysis knot
Really.
6. device according to claim 5, it is characterised in that the analysis result includes：Inside and outside the insulator it is
The no mechanical strength value for having crackle, the position of the crackle and the insulator to be detected.
7. device according to claim 5, it is characterised in that also include：Memory element, for by the excited vibration
Ripple, the feedback wave and the analysis result are stored.
8. device according to claim 1, it is characterised in that also include：Voice broadcast unit, for the analysis is tied
Fruit carries out voice broadcast.
9. a kind of insulator detector, it is characterised in that include：Insulated handle, shell and such as claim 5-8 any one
The device of described live detection insulator.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710002517.8A CN106596722A (en) | 2017-01-03 | 2017-01-03 | Live-line detection method and device for insulator and detecting instrument |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710002517.8A CN106596722A (en) | 2017-01-03 | 2017-01-03 | Live-line detection method and device for insulator and detecting instrument |
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| CN201710002517.8A Pending CN106596722A (en) | 2017-01-03 | 2017-01-03 | Live-line detection method and device for insulator and detecting instrument |
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Cited By (5)
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| CN110883764A (en) * | 2019-12-09 | 2020-03-17 | 国网智能科技股份有限公司 | Transformer substation insulator live working robot system and method |
| CN111208393A (en) * | 2018-11-22 | 2020-05-29 | 国网河南省电力公司平顶山供电公司 | Ground detection method for operation condition of line insulator |
| CN113340991A (en) * | 2021-06-21 | 2021-09-03 | 海南电网有限责任公司乐东供电局 | Vibration acoustic detection device for porcelain post insulator |
| WO2022105556A1 (en) * | 2020-11-23 | 2022-05-27 | 太景科技(南京)有限公司 | Insulator detection apparatus, detection method, and insulator |
| CN114545106A (en) * | 2020-11-26 | 2022-05-27 | 国网天津市电力公司 | Composite insulator aging degree testing method |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111208393A (en) * | 2018-11-22 | 2020-05-29 | 国网河南省电力公司平顶山供电公司 | Ground detection method for operation condition of line insulator |
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| CN114545106A (en) * | 2020-11-26 | 2022-05-27 | 国网天津市电力公司 | Composite insulator aging degree testing method |
| CN113340991A (en) * | 2021-06-21 | 2021-09-03 | 海南电网有限责任公司乐东供电局 | Vibration acoustic detection device for porcelain post insulator |
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Application publication date: 20170426 |