CN110531233A - GIS disc insulator surface state detection device and method based on ultrasonic wave injection - Google Patents
GIS disc insulator surface state detection device and method based on ultrasonic wave injection Download PDFInfo
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- CN110531233A CN110531233A CN201910912995.1A CN201910912995A CN110531233A CN 110531233 A CN110531233 A CN 110531233A CN 201910912995 A CN201910912995 A CN 201910912995A CN 110531233 A CN110531233 A CN 110531233A
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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
- 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
- G01N29/44—Processing the detected response signal, e.g. electronic circuits specially adapted therefor
- G01N29/48—Processing the detected response signal, e.g. electronic circuits specially adapted therefor by amplitude comparison
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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
- G01R31/1209—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 acoustic measurements
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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
- G01R31/1227—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 of components, parts or materials
- G01R31/1245—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 of components, parts or materials of line insulators or spacers, e.g. ceramic overhead line cap insulators; of insulators in HV bushings
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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
- G01N2291/023—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
- G01N2291/26—Scanned objects
- G01N2291/263—Surfaces
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Abstract
The invention discloses a kind of GIS disc insulator surface state detection devices and method based on ultrasonic wave injection, ultrasonic wave injection sensor is placed at GIS disc insulator and GIS cavity interface, sensor is injected by pulse excitation source forcing and generates ultrasonic signal, carries out the reception of signal in disc insulator opposite side using ultrasonic receiver sensor.The judgement for receiving signal and run the reception signal progress disc insulator surface filth state after some time when just putting into operation by comparing equipment.This method for GIS disc insulator surface state can not live detection difficult point provide it is a kind of can in equipment running process live detection method.
Description
Technical field
The invention belongs to electrical device status live detection technical fields, and in particular to it is a kind of based on ultrasonic wave injection
GIS (gas insulated combined electrical equipment gas insulated substation, GIS) disc insulator surface state live detection and
Analysis method.
Background technique
Closed gas insulation in combined electric appliance (Gas Insulated Switchgear, GIS) has occupied area small, good
Good insulation performance and be widely used in power grid.But due to its full-closed structure feature, once there is thing
Seriously much from opening-type equipment, fault restoration is especially complicated for consequence score caused by therefore.In all kinds of accidents of GIS, by
The edge flashing caused by disc insulator filth is most commonly seen accident.GIS device on-site assembly, assembled at the scene
Easily enter all kinds of filths such as dust, particle in journey, these are filthy mobile to disc insulator in long-term operational process, attached
On basin surface, when the degree for gathering certain is possible to lead to basin flashover.Since disc insulator is closed
In GIS cavity, and GIS is extremely sensitive to field distribution, there is presently no a kind of method can to its surface filth state into
Row detection is especially even more no corresponding detection means in the process of running.Which results in only when basin flashover disintegrates
The filthy situation on basin surface could be specified afterwards.
Therefore live detection can be carried out to its surface state in the GIS device operation phase and divide by being badly in need of one kind at present
The method of analysis, the present invention are directed to this problem, propose a kind of GIS disc insulator surface state electrification based on ultrasonic wave injection
Detection and analysis method.
Summary of the invention
The present invention provides it is a kind of based on ultrasonic wave injection GIS disc insulator surface state detection device and method,
The device and method can carry out live detection to disc insulator surface state when GIS is run.
In order to achieve the above objectives, the present invention is based on the GIS disc insulator surface state detection device of ultrasonic wave injection, packets
Include impulse generator, ultrasonic wave injection sensor, ultrasonic receiver sensor and oscillograph, the output end of impulse generator and super
Sound wave injects the input terminal connection of sensor, and the output end of ultrasonic receiver sensor is connected with the input terminal of oscillograph；Ultrasound
Wave injection sensor is mounted on the intersection of disc insulator Yu GIS shell, and ultrasonic receiver sensor is mounted on outside GIS shell
Wall；Ultrasonic receiver sensor passes through disc insulator for receiving the ultrasonic signal as caused by ultrasonic wave injection sensor
The surface acoustic wave that surface is formed, oscillograph is for acquiring and showing the surface acoustic wave that ultrasonic receiver sensor receives.
Further, ultrasonic sensor is identical with the performance parameter of ultrasonic wave injection sensor.
Further, ultrasonic receiver sensor is oppositely arranged with ultrasonic wave injection sensor.
GIS disc insulator surface state detection method based on ultrasonic wave injection, comprising the following steps:
Step 1 puts into operation in one month in GIS device, and ultrasonic wave injection sensor is mounted on outside disc insulator and GIS
The intersection of shell；Ultrasonic signal is generated using impulse generator excitation ultrasound wave injection sensor；It is injected and is sensed by ultrasonic wave
Ultrasonic signal caused by device is injected into disc insulator surface, forms surface acoustic wave, surface acoustic wave is along disc insulator table
Face propagates to ultrasonic receiver sensor, ultrasonic receiver sensor by the signal received be transferred to oscillograph be acquired and
Display；Using the signal detected at this time as basic data；
Step 2, any time detects disc insulator according to step 1 method in equipment running process；
Step 3 compares ultrasonic signal and basic data that step 2 detection obtains, when ultrasonic signal amplitude reduces
20% or more, then judge that disc insulator surface exists filthy at this time；Otherwise, there is no filths on disc insulator surface.
Further, in step 1, it is 20kHz~100kHz that ultrasonic wave, which injects sensor signal frequency range,.
Further, it in step 1, puts into operation in one week in GIS device, disc insulator is detected.
Compared with prior art, the present invention at least has technical effect beneficial below:
1) device of the present invention forms surface wave on disc insulator surface using ultrasonic wave, and ultrasonic wave, which receives, to be passed
Sensor is transferred to oscillograph after receiving surface wave, and the acquisition and display of surface wave are carried out by oscillograph, can intuitively show table
The waveform of surface wave.The present apparatus is easy to connect, when not needing detection, ultrasonic wave can be injected to sensor and ultrasonic wave receives sensing
Device is removed from GIS shell, is being installed when needing to detect.By detecting twice, can be realized in the energized state to basin
The surface filth state of formula insulator is detected.
2) GIS disc insulator surface state there is no effective detection method at present in operation, and it is existing that present solution provides one kind
Field is easy to implement, low in cost, and can not have a power failure in GIS operational process and can examine to its disc insulator surface state
The method surveyed and judged solves this live problem.Method of the present invention, using ultrasonic signal in disc insulator table
When face is propagated, when disc insulator surface is attached with particle, the principle that ultrasonic signal will be made substantially to decay surpasses based on the received
The intensity of acoustical signal detects the surface state of disc insulator, and testing result is accurate.
Further, it puts into operation in one week in GIS device, disc insulator is detected, disc insulator is the most at this time
Completely, collected surface acoustic wave is as a result more accurate as basic data during this period.
Detailed description of the invention
Fig. 1 is disc insulator schematic front view；
Fig. 2 is disc insulator schematic side view；
Fig. 3 a is the actually detected exemplary diagram of clean disc insulator；
Fig. 3 b is the actually detected exemplary diagram of the attached salt disc insulator in surface；
In attached drawing: 1- ultrasonic wave injection sensor, 2- ultrasonic receiver sensor, 3-GIS guide rod, 4- disc insulator,
5- impulse generator, 6- oscillograph, 7-GIS shell.
Specific embodiment
In order to make the purpose of the present invention and technical solution be more clear and be easy to understand.Below in conjunction with drawings and examples,
The present invention is further described in detail, and described herein the specific embodiments are only for explaining the present invention, is not intended to
Limit the present invention.
In the description of the present invention, it is to be understood that, term " center ", " longitudinal direction ", " transverse direction ", "upper", "lower",
The orientation or positional relationship of the instructions such as "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outside" is
It is based on the orientation or positional relationship shown in the drawings, is merely for convenience of description of the present invention and simplification of the description, rather than instruction or dark
Show that signified device or element must have a particular orientation, be constructed and operated in a specific orientation, therefore should not be understood as pair
Limitation of the invention.In addition, term " first ", " second " are used for description purposes only, it is not understood to indicate or imply opposite
Importance or the quantity for implicitly indicating indicated technical characteristic.Define " first " as a result, the feature of " second " can be bright
Show or implicitly include one or more of the features.In the description of the present invention, unless otherwise indicated, " multiple " contain
Justice is two or more.In the description of the present invention, it should be noted that unless otherwise clearly defined and limited, art
Language " installation ", " connected ", " connection " shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or
It is integrally connected；It can be mechanical connection, be also possible to be electrically connected；It can be directly connected, it can also be by between intermediary
It connects connected, can be the connection inside two elements.For the ordinary skill in the art, can be understood with concrete condition
The concrete meaning of above-mentioned term in the present invention.
Referring to Figures 1 and 2, a kind of GIS disc insulator surface state detection device based on ultrasonic wave injection, including arteries and veins
Rush generator 5, ultrasonic wave injection sensor 1, ultrasonic receiver sensor 2 and oscillograph 6, the output end of impulse generator 5 and
Ultrasonic wave injects the input terminal connection of sensor 1, and the output end of ultrasonic receiver sensor 2 is connected with the input terminal of oscillograph 6.
Ultrasonic wave injection sensor 1 is mounted on the intersection of disc insulator 4 Yu GIS shell 7, and ultrasonic receiver sensor 2 is mounted on
7 outer wall of GIS shell and with ultrasonic wave injection sensor 1 be oppositely arranged.Ultrasonic receiver sensor 2 is infused for receiving by ultrasonic wave
Enter ultrasonic signal caused by sensor 1 and pass through the surface acoustic wave that 4 surface of disc insulator is formed, oscillograph 6 is for acquiring
And show the surface acoustic wave that ultrasonic receiver sensor 2 receives.
Preferably, ultrasonic sensor 2 has and ultrasonic wave injects the duplicate performance parameter of sensor 1.
A kind of GIS disc insulator surface state live detection method based on ultrasonic wave injection, comprising the following steps:
Ultrasonic wave injection sensor 1 is placed on the intersection of disc insulator 4 Yu GIS shell 7 by step 1), is placed herein
Place can inject a signal into the inner surface of disc insulator, form surface acoustic wave.Ultrasonic wave injects sensor signal frequency range
Using 20kHz~100kHz.Believed using the ultrasonic wave that 5 excitation ultrasound wave of impulse generator injection sensor 1 generates respective range
Number, it is 2kV that impulse generator 5, which generates amplitude, and forward position is the high-voltage pulse signal of 10ns, signal excitation ultrasonic wave injection sensing
Device 1 generates ultrasonic signal.The ultrasonic signal as caused by ultrasonic wave injection sensor 1 is injected into 4 surface of disc insulator,
It forms surface acoustic wave and travels to opposite side along 4 surface of disc insulator, it is right about GIS guide rod 3 in ultrasonic wave injection 1 opposite side of sensor
Claim location arrangements ultrasonic receiver sensor 2, the signal that ultrasonic receiver sensor 2 detects is sent into oscillograph 6 and is shown
And acquisition, oscillograph uses TEK4054, with 500MHz bandwidth, 2.5GHz sample rate.
Ultrasonic signal, when 4 surface of disc insulator is attached with particle, will make to surpass when 4 surface of disc insulator is propagated
Acoustical signal substantially decays, thus according to this feature can ultrasonic signal based on the received intensity to the surface shape of disc insulator
State is detected.When on-site test, one-time detection is carried out in GIS device puts into operation one month, is made with the signal detected at this time
For basic data.
Step 2) any time in subsequent equipment running process detects it, the ultrasound that will be detected at this time
Signal is compared with basic data, if ultrasonic signal amplitude reduces 20% or more, judges disc insulator table at this time
There is filth in face, handled.
Analysis result is shown in order to more obvious, attached drawing 3a is provided to be obtained when laboratory is studied
Basin surface is there is no the actually detected of filth as a result, Fig. 3 b is the actually detected result for having smeared 200mg salt as filth when.
When disc insulator cleaning, the amplitude of the peak value detected is 0.25V, and when with filthy, the peak value detected
Amplitude be 0.15V, amplitude reduces 40%.It is filthy to can be clearly seen that disc insulator surface exists from Fig. 3 a and Fig. 3 b
Whether to detection signal influence.
The above description is merely a specific embodiment, but scope of protection of the present invention is not limited thereto, any
Belong to those skilled in the art in the technical scope disclosed by the present invention, any changes or substitutions that can be easily thought of, all answers
It is included within the scope of the present invention.Therefore, protection scope of the present invention should be subject to the protection scope in claims.
Claims (6)
1. the GIS disc insulator surface state detection device based on ultrasonic wave injection, which is characterized in that including impulse generator
(5), ultrasonic wave injection sensor (1), ultrasonic receiver sensor (2) and oscillograph (6), the impulse generator (5) it is defeated
Outlet is connected with the input terminal of ultrasonic wave injection sensor (1), the output end and oscillograph of the ultrasonic receiver sensor (2)
(6) input terminal connection；Ultrasonic wave injection sensor (1) is mounted on the boundary of disc insulator (4) Yu GIS shell (7)
Place, the ultrasonic receiver sensor (2) are mounted on GIS shell (7) outer wall；The ultrasonic receiver sensor (2) is for connecing
It receives the ultrasonic signal as caused by ultrasonic wave injection sensor (1) and passes through the surface acoustic wave that disc insulator (4) surface is formed,
The oscillograph (6) is for acquiring and showing the surface acoustic wave that ultrasonic receiver sensor (2) receives.
2. the GIS disc insulator surface state detection device based on ultrasonic wave injection, which is characterized in that the supersonic sensing
Device (2) is identical with the ultrasonic wave injection performance parameter of sensor (1).
3. the GIS disc insulator surface state detection device based on ultrasonic wave injection, which is characterized in that the ultrasonic wave receives
Sensor (2) is oppositely arranged with ultrasonic wave injection sensor (1).
4. the GIS disc insulator surface state detection method based on ultrasonic wave injection, which comprises the following steps:
Step 1 puts into operation in one month in GIS device, and ultrasonic wave injection sensor (1) is mounted on disc insulator (4) and GIS
The intersection of shell (7)；Ultrasonic signal is generated using impulse generator (5) excitation ultrasound wave injection sensor (1)；By ultrasound
Ultrasonic signal caused by wave injection sensor (1) is injected into disc insulator (4) surface, forms surface acoustic wave, sound surface
Wave propagates to ultrasonic receiver sensor (2) along disc insulator (4) surface, and the ultrasonic receiver sensor (2) will receive
To signal be transferred to oscillograph (6) and be acquired and show；Using the signal detected at this time as basic data；
Step 2, any time detects disc insulator (4) according to step 1 the method in equipment running process；
Step 3 compares ultrasonic signal and basic data that step 2 detection obtains, when ultrasonic signal amplitude reduces by 20%
More than, then judge that disc insulator surface exists filthy at this time；Otherwise, there is no filths on disc insulator surface.
5. the GIS disc insulator surface state detection method according to claim 4 based on ultrasonic wave injection, feature
It is, in the step 1, it is 20kHz~100kHz that ultrasonic wave, which injects sensor (1) signal frequency range,.
6. the GIS disc insulator surface state detection method according to claim 4 based on ultrasonic wave injection, feature
It is, in the step 1, puts into operation in one week in GIS device, disc insulator (4) is detected.
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Cited By (3)
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| CN114137080A (en) * | 2021-12-07 | 2022-03-04 | 国网河南省电力公司检修公司 | GIS basin-type insulator surface state detection method |
| CN114200268A (en) * | 2021-12-07 | 2022-03-18 | 国网河南省电力公司检修公司 | Basin-type insulator surface state detection system and detection method based on modal analysis |
| CN114324607A (en) * | 2021-05-12 | 2022-04-12 | 国网山西省电力公司电力科学研究院 | Insulator surface crack detection device and method based on ultrasonic guided wave energy |
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