CN110068753A - GIS detecting device for basin type insulator and method based on case vibration signal - Google Patents
GIS detecting device for basin type insulator and method based on case vibration signal Download PDFInfo
- Publication number
- CN110068753A CN110068753A CN201910405768.XA CN201910405768A CN110068753A CN 110068753 A CN110068753 A CN 110068753A CN 201910405768 A CN201910405768 A CN 201910405768A CN 110068753 A CN110068753 A CN 110068753A
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- gis
- disc insulator
- vibration signal
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01H—MEASUREMENT OF MECHANICAL VIBRATIONS OR ULTRASONIC, SONIC OR INFRASONIC WAVES
- G01H1/00—Measuring characteristics of vibrations in solids by using direct conduction to the detector
- G01H1/12—Measuring characteristics of vibrations in solids by using direct conduction to the detector of longitudinal or not specified vibrations
-
- 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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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Measurement Of Mechanical Vibrations Or Ultrasonic Waves (AREA)
- Testing Relating To Insulation (AREA)
Abstract
Based on the GIS detecting device for basin type insulator of case vibration signal and side, belong to power system device safe operation field, the detection device is made of charge amplifying circuit, signal amplification circuit, filter circuit, A/D conversion circuit, the output end connection signal input amplifier of charge amplifying circuit, signal amplification circuit output end connects the input terminal of filter circuit, the input terminal of the output end connection A/D conversion circuit of filter circuit.The probe of detection device is adsorbed on the mechanical oscillation signal that GIS device shell receives GIS device, and the mechanical oscillation signal received is converted to electric signal, and electric signal is presented in the form of waveform；It is compared and analyzed to normal GIS disc insulator and containing defective disc insulator waveform, the rule that vibration signal changes when defect occurs in the disc insulator obtained.The present invention can provide initial stage judgement for overhaul of the equipments, reduce the incidence of major accident, reduce the maintenance cost of equipment.
Description
Technical field
The invention belongs to power system devices to be safely operated field, be related to disc insulator defects detection, specifically relate to
And a kind of disc insulator defects detection based on case vibration signal.GIS is the English of gas insulated transformer substation in the present invention
Abbreviation.
Background technique
Gas insulated transformer substation (gas insulated substation, GIS) be by breaker, bus, disconnecting switch,
The High-Voltage Electrical Appliances of the compositions such as earthing switch, voltage transformer, current transformer, arrester and bushing.Disc insulator exists
Play a part of supporting conductor, isolation gas chamber and electric insulation in GIS, is link more weak in entire GIS.Statistical result
Show that failure caused by disc insulator defect accounts for the 37% of GIS total failare.Therefore the detection of its structural health is to realization industry peace
Full production, extension transformer equipment service life have great significance.Vibration signal detection is since detection sensitivity is high, non-destructive testing
The advantages that cause the concern of people.An inherent characteristic as GIS is vibrated, can reflect that low frequency caused by mechanical breakdown shakes
It is dynamic, it can also reflect high-frequency vibration caused by shelf depreciation.When GIS breaks down, operating status, which changes, will lead to electricity
The variation of magnetic force and mechanical force, and then vibrate and also change correspondingly, therefore it is exhausted to detect GIS benzvalene form to can use GIS vibration signal
Edge whether there is defect.
Summary of the invention
In order to which disc insulator is effectively detected out with the presence or absence of defect, the present invention provides one kind to be believed based on case vibration
Number GIS disc insulator detection method, can be judged disc insulator with the presence or absence of defect according to the variation of vibration signal.
Technical solution of the present invention: the GIS detecting device for basin type insulator based on case vibration signal, it is characterized in that the inspection
It surveys device to be made of charge amplifying circuit, signal amplification circuit, filter circuit, A/D conversion circuit, the output of charge amplifying circuit
Hold connection signal input amplifier, signal amplification circuit output end connect filter circuit input terminal, filter circuit it is defeated
The input terminal of outlet connection A/D conversion circuit；
The faint quantity of electric charge that the mechanical quantity of vibration signal is transformed by charge amplifying circuit is transformed into the voltage being proportional；Letter
The voltage signal that charge amplifying circuit is converted by number amplifying circuit amplifies；Filter circuit reduces the DC voltage of pulsation as far as possible
In alternating component, retain flip-flop, so that output waveform is become smoother；A/D conversion circuit is converted into analog signal
Digital signal, the voltage signal that will enter into A/D conversion circuit are exported in the form of specific value in waveform.
GIS disc insulator detection method based on case vibration signal is adsorbed it is characterized in that vibrating sensor is popped one's head in
Receive the mechanical oscillation signal of GIS device in GIS device shell, and the mechanical oscillation signal received be converted into electric signal,
Electric signal is presented in the form of waveform；It is carried out to normal GIS disc insulator and containing defective disc insulator waveform
There is the rule that vibration signal changes when defect in comparative analysis, the disc insulator obtained.
Under identical frequency, containing defective disc insulator compared with intact disc insulator, the whole of waveform becomes
Change trend is essentially identical, but the waveforms amplitude containing defective disc insulator vibration signal is obviously reduced；When vibration signal wave
Shape amplitude shows disc insulator existing defects when being less than 2.8kv.
Experiment show the present invention can accurately detect disc insulator containing it is defective when vibration signal variation, and
It can be effectively carried out the defects detection of disc insulator.
GIS is the english abbreviation of gas insulated transformer substation.
The beneficial effects of the present invention are: based on the GIS disc insulator detection method of case vibration signal for sending out ahead of time
Now GIS disc insulator inside defect that may be present or performance deterioration play obvious effect, can provide for overhaul of the equipments
Initial stage judgement, reduces the incidence of major accident, reduces the maintenance quantity and maintenance cost of equipment, really to realize GIS
Equipment state overhauling provides strong technological means.
Detailed description of the invention
Fig. 1 is the circuit diagram of detection device in the present invention.
Specific embodiment
Shown in Fig. 1, the GIS detecting device for basin type insulator based on case vibration signal, by charge amplifying circuit 1, signal
Amplifying circuit 2, filter circuit 3, A/D conversion circuit 4 form, the output end connection signal amplifying circuit input of charge amplifying circuit
End, signal amplification circuit output end connect the input terminal of filter circuit, and the output end of filter circuit connects the defeated of A/D conversion circuit
Enter end；
The faint quantity of electric charge that the mechanical quantity of vibration signal is transformed by charge amplifying circuit is transformed into the voltage being proportional；Letter
The voltage signal that charge amplifying circuit is converted by number amplifying circuit amplifies；Filter circuit reduces the DC voltage of pulsation as far as possible
In alternating component, retain flip-flop, so that output waveform is become smoother；A/D conversion circuit is converted into analog signal
Digital signal, the voltage signal that will enter into A/D conversion circuit are exported in the form of specific value in waveform.
Vibration signal detecting step
It being connected step 1: will test device, oscillograph and computer, the output end of detection device is connected with oscillograph input terminal,
Oscillograph is connected with computer enables waveform to present on computers.
Step 2: the probe that will test device is adsorbed onto the GIS of zero defect disc insulator in such a way that magnetic support is attracted
Device housings detect the vibration signal of GIS device shell, and vibration signal are imported into oscillograph, and by the oscillography of oscillograph institute
Shape imports computer and carries out preservation analysis.
Step 3: taking the receipts of different test points progress vibration signals on the GIS device shell of zero defect disc insulator
Collection, as normal data.
Step 4: the probe that will test device is adsorbed onto such a way that magnetic support is attracted containing defective disc insulator
GIS device shell is detected in GIS device shell and detection position corresponding with the GIS device shell of zero defect disc insulator
Vibration signal, and vibration signal is imported into oscillograph, and the importing computer of waveform shown in oscillograph is subjected to preservation analysis.
Step 5: the detection waveform of the GIS device shell containing defective disc insulator and zero defect benzvalene form are insulated
The detection waveform of the GIS device shell of son compares.The result shows that by the normal disc insulator being collected into computer and containing
The vibration signal waveforms of defective disc insulator compare and analyze, and find under identical frequency, contain defective benzvalene form
For insulator compared with intact disc insulator, the overall variation trend of waveform is essentially identical, but insulate containing defective benzvalene form
The waveforms amplitude of sub- vibration signal is obviously reduced.Intact disc insulator waveforms amplitude contains defective benzvalene form in 3.5kv
The waveforms amplitude maximum of insulator only has 2.8kv, therefore shows disc insulator when vibration signal waveforms amplitude is less than 2.8kv
Existing defects.Lot of experimental data meets this rule, it was demonstrated that the present invention can be used to detect the degree of impairment of disc insulator.
Claims (2)
1. the GIS detecting device for basin type insulator based on case vibration signal, it is characterized in that being amplified by charge amplifying circuit, signal
Circuit, filter circuit, A/D conversion circuit composition, the output end connection signal input amplifier of charge amplifying circuit, signal
Amplification circuit output end connects the input terminal of filter circuit, the input terminal of the output end connection A/D conversion circuit of filter circuit；Electricity
The faint quantity of electric charge that the mechanical quantity of vibration signal is transformed by lotus amplifying circuit is transformed into the voltage being proportional；Signal amplification
The voltage signal that charge amplifying circuit is converted by circuit amplifies；Filter circuit reduces the friendship in the DC voltage of pulsation as far as possible
Ingredient is flowed, retains flip-flop, output waveform is made to become smoother；Analog signal is converted into digital letter by A/D conversion circuit
Number, the voltage signal that will enter into A/D conversion circuit is exported in the form of specific value in waveform.
2. a kind of GIS disc insulator detection method based on case vibration signal, it is characterized in that by inspection described in claim 1
The probe for surveying device is adsorbed on the mechanical oscillation signal that GIS device shell receives GIS device, and the mechanical oscillation received are believed
Number electric signal is converted to, electric signal is presented in the form of waveform；To normal GIS disc insulator and contain defective benzvalene form
Insulation sub-waveform compares and analyzes, and the rule that vibration signal changes when defect occurs in the disc insulator obtained；In identical frequency
Under, containing defective disc insulator compared with intact disc insulator, the overall variation trend of waveform is essentially identical, but contains
The waveforms amplitude of defective disc insulator vibration signal is obviously reduced；The table when vibration signal waveforms amplitude is less than 2.8kv
Bright disc insulator existing defects.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201910405768.XA CN110068753A (en) | 2019-05-16 | 2019-05-16 | GIS detecting device for basin type insulator and method based on case vibration signal |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910405768.XA CN110068753A (en) | 2019-05-16 | 2019-05-16 | GIS detecting device for basin type insulator and method based on case vibration signal |
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| CN110068753A true CN110068753A (en) | 2019-07-30 |
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| CN201910405768.XA Pending CN110068753A (en) | 2019-05-16 | 2019-05-16 | GIS detecting device for basin type insulator and method based on case vibration signal |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110261711A (en) * | 2019-08-06 | 2019-09-20 | 广东电网有限责任公司 | A kind of faulty insulator localization method of GIS multiple-factor joint degradation platform |
| CN111426919A (en) * | 2020-04-08 | 2020-07-17 | 国网山西省电力公司电力科学研究院 | Basin-type insulator detection device based on laser-induced ultrasound |
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| CN203629674U (en) * | 2013-11-02 | 2014-06-04 | 国家电网公司 | Measuring device of high voltage gas insulated switch mechanical vibration |
| CN204556089U (en) * | 2015-03-09 | 2015-08-12 | 广西电网有限责任公司电力科学研究院 | A kind of GIS device vibration characteristics analoging detecting device |
| CN105629100A (en) * | 2015-12-18 | 2016-06-01 | 国网安徽省电力公司合肥供电公司 | System and method of diagnosing GIS (Gas Insulated Switchgear) mechanical defects based on abnormal vibration analysis |
| CN206208841U (en) * | 2016-08-31 | 2017-05-31 | 刘雪梅 | A kind of porcelain strut insulator on-line monitoring system |
| CN107084837A (en) * | 2017-05-12 | 2017-08-22 | 沈阳工程学院 | GIS mechanical fault detection systems |
| CN107917964A (en) * | 2017-11-29 | 2018-04-17 | 陕西易阳科技有限公司 | A kind of disc insulator damage detection system |
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2019
- 2019-05-16 CN CN201910405768.XA patent/CN110068753A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203629674U (en) * | 2013-11-02 | 2014-06-04 | 国家电网公司 | Measuring device of high voltage gas insulated switch mechanical vibration |
| CN204556089U (en) * | 2015-03-09 | 2015-08-12 | 广西电网有限责任公司电力科学研究院 | A kind of GIS device vibration characteristics analoging detecting device |
| CN105629100A (en) * | 2015-12-18 | 2016-06-01 | 国网安徽省电力公司合肥供电公司 | System and method of diagnosing GIS (Gas Insulated Switchgear) mechanical defects based on abnormal vibration analysis |
| CN206208841U (en) * | 2016-08-31 | 2017-05-31 | 刘雪梅 | A kind of porcelain strut insulator on-line monitoring system |
| CN107084837A (en) * | 2017-05-12 | 2017-08-22 | 沈阳工程学院 | GIS mechanical fault detection systems |
| CN107917964A (en) * | 2017-11-29 | 2018-04-17 | 陕西易阳科技有限公司 | A kind of disc insulator damage detection system |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110261711A (en) * | 2019-08-06 | 2019-09-20 | 广东电网有限责任公司 | A kind of faulty insulator localization method of GIS multiple-factor joint degradation platform |
| CN111426919A (en) * | 2020-04-08 | 2020-07-17 | 国网山西省电力公司电力科学研究院 | Basin-type insulator detection device based on laser-induced ultrasound |
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Application publication date: 20190730 |