CN105115684B - Vibration signal propagation characteristic experimental rig and method in gas insulated combined electrical equipment - Google Patents
Vibration signal propagation characteristic experimental rig and method in gas insulated combined electrical equipment Download PDFInfo
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- CN105115684B CN105115684B CN201510522628.2A CN201510522628A CN105115684B CN 105115684 B CN105115684 B CN 105115684B CN 201510522628 A CN201510522628 A CN 201510522628A CN 105115684 B CN105115684 B CN 105115684B
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- electrical equipment
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- cavity
- insulated combined
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- 238000000034 method Methods 0.000 title claims description 9
- 239000007789 gas Substances 0.000 claims abstract description 50
- 230000010358 mechanical oscillation Effects 0.000 claims abstract description 40
- 238000002474 experimental method Methods 0.000 claims abstract description 38
- 239000012212 insulator Substances 0.000 claims description 35
- 239000000463 material Substances 0.000 claims description 13
- 239000013078 crystal Substances 0.000 claims description 9
- 238000012360 testing method Methods 0.000 claims description 9
- 230000000644 propagated effect Effects 0.000 claims description 4
- VMQPMGHYRISRHO-UHFFFAOYSA-N benzvalene Chemical group C1=CC2C3C1C32 VMQPMGHYRISRHO-UHFFFAOYSA-N 0.000 claims description 3
- 238000005070 sampling Methods 0.000 claims 1
- 238000009533 lab test Methods 0.000 abstract 1
- 238000010338 mechanical breakdown Methods 0.000 description 7
- 238000001514 detection method Methods 0.000 description 5
- 238000007599 discharging Methods 0.000 description 3
- 239000007769 metal material Substances 0.000 description 2
- 238000010998 test method Methods 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000013399 early diagnosis Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000007667 floating Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 238000002604 ultrasonography Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Measurement Of Mechanical Vibrations Or Ultrasonic Waves (AREA)
- Investigating Or Analyzing Materials By The Use Of Ultrasonic Waves (AREA)
Abstract
The invention discloses vibration signal propagation characteristic experimental rig in gas insulated combined electrical equipment, it is characterized in that, including gas insulated combined electrical equipment shell, vibrator, oscillograph, the gas insulated combined electrical equipment enclosure is provided with experiment cavity, the inside of the experiment cavity is horizontally disposed guide rod, emission sensor is provided with the guide rod, the emission sensor is connected with the vibrator；The top of the gas insulated combined electrical equipment shell is provided with several and receives sensor, and the reception sensor is connected with the oscillograph；The gas insulated combined electrical equipment shell is provided at both ends with closing panel；The lower end of the gas insulated combined electrical equipment shell is respectively arranged with air gauge, the valve for filling SF6 gases for measuring experiment inside cavity pressure.The laboratory test and analysis of mechanical oscillation signal propagation characteristic in the achievable gas insulated combined electrical equipment of the present invention.
Description
Technical field
The present invention relates to vibration signal propagation characteristic experimental rig and method in gas insulated combined electrical equipment, belong to and electrically set
Standby experimental technique field.
Background technology
Closed gas insulation in combined electric appliance（Gas Insulated Switchgear, GIS）It is small, good with floor space
Good insulating properties and be widely used in power network.But it is due to its full-closed structure feature, once there is thing
Therefore, the consequence score caused is much serious from opening-type equipment, and its fault restoration is particularly complicated.
GIS is often installed using field-installed mode, and because site environment is severe, assembling cycle is short, it is easy to go out
Existing mechanical breakdown, such as contact is bad, conductor is not to the heart.Mechanical breakdown can cause GIS to produce vibration in the process of running,
Long-term vibration can cause the phenomenons such as GIS poor sealings, gas leakage, and the generation of floating potential can be caused when serious, cause electric discharge property
Failure.Therefore the mechanical breakdown to GIS is accurately detected, is the effective ways for realizing the early diagnosis of its defect.
Detection research of the research before to GIS discharging faults is more, but mechanical breakdown is different from discharging fault, its
Early stage will not produce discharge signal, therefore superfrequency, ultrasound involve the discharging fault detection method such as pulse current to machine
The detection of tool failure is invalid.
The content of the invention
The present invention detects that there is provided vibration signal in gas insulated combined electrical equipment for the vibration signal of GIS mechanical breakdowns
Propagation characteristic experimental rig and method, realize using mechanical oscillation signal detect can effective detection GIS mechanical breakdown.
The present invention is adopted the following technical scheme that：Vibration signal propagation characteristic experimental rig in gas insulated combined electrical equipment, its
It is characterised by, including gas insulated combined electrical equipment shell, vibrator, oscillograph, the gas insulated combined electrical equipment enclosure
It is provided with experiment cavity, the inside of the experiment cavity is horizontally disposed to be had and transmitting is provided with guide rod, the guide rod passes
Sensor, the emission sensor is connected with the vibrator；If the top of the gas insulated combined electrical equipment shell is provided with
Dry reception sensor, the reception sensor is connected with the oscillograph；The two of the gas insulated combined electrical equipment shell
End is provided with closing panel；The lower end of the gas insulated combined electrical equipment shell is respectively arranged with for measuring experiment inside cavity
The air gauge of pressure, the valve for filling SF6 gases.
Preferably, the two ends of experiment cavity are sealed using phonon crystal material, guide rod and phonon crystal material tight
Contact.
Preferably, the thickness of phonon crystal material is 150mm.
Preferably, the centre of experiment cavity is provided with disc insulator, and experiment cavity includes left end experiment cavity, right-hand member examination
Cavity is tested, left end experiment cavity connects into one section of cavity with right-hand member experiment cavity by disc insulator；Disc insulator is can
It is replaceable.
Preferably, the length that left end experiment cavity tests cavity with right-hand member is 1300mm, left end experiment cavity and right-hand member
The end face diameter for testing cavity is 560mm, a diameter of 100mm of guide rod, and the length of guide rod is 1000mm.
Preferably, oscillograph uses Tyke 4104, and the frequency characteristic of oscillograph is four-way, 1G bandwidth, 5GHz sample rates.
Preferably, vibrator uses high-voltage pulse generator, and the voltage of the producible high-voltage pulse of vibrator is no more than
20kV。
Preferably, emission sensor and the frequency range for receiving sensor are 0 ~ 20kHz.
The method that the present invention also proposes vibration signal propagation characteristic experimental rig in gas insulated combined electrical equipment, its feature exists
In specifically including following steps：
Step SS1 replaces the disc insulator tested in the middle of cavity using hollow metallic cylinder, keeps experiment cavity
Length is constant, it is ensured that mechanical oscillation signal is not propagated by disc insulator, now utilizes vibrator and generation sensor emission
Go out mechanical oscillation signal, the reception of mechanical oscillation signal is carried out by receiving the oscillograph of sensor and high speed, is not had
By the mechanical oscillation signal of disc insulator；
Step SS2 loads onto disc insulator, changes hollow metallic cylinder, and repeat step SS1 obtains exhausted by benzvalene form
The mechanical oscillation signal of edge；
Step SS3 is compared the step SS1 and step SS2 mechanical oscillation signals obtained in time domain and frequency domain respectively
Compared with maximum amplitude, three characteristic parameters of average amplitude and signal energy of the main comparison signal of time-domain signal, frequency-region signal are main
The frequency distribution feature of comparison signal；
Step SS4 is contrasted by time domain and frequency domain contrasts the shadow for obtaining disc insulator to mechanical oscillation signal propagation characteristic
Ring, compare and the mechanical oscillation signal that sensor is received is received at diverse location, and then obtain mechanical oscillation signal in GIS
Propagation characteristic；
Step SS5 changes different type, the disc insulator of different materials, repeat step SS1 ~ step SS4, and then obtains
By mechanical oscillation signal during disc insulator, so as to study shadow of the disc insulator to mechanical oscillation signal propagation characteristic
Ring.
The beneficial effect that the present invention is reached：Present invention can be implemented in laboratory to mechanical in gas insulated combined electrical equipment
The propagation characteristic of vibration signal is tested, and the decay grasped when mechanical oscillation signal is propagated in gas insulated combined electrical equipment is special
Levy, be that laboratory base is established in the accurate detection of onsite application mechanical oscillation method progress gas insulated combined electrical equipment mechanical breakdown
Plinth.
Brief description of the drawings
Fig. 1 is the structural representation of vibration signal propagation characteristic experimental rig in gas insulated combined electrical equipment of the invention.
Fig. 2 is the schematic flow sheet of vibration signal propagation characteristic test method in gas insulated combined electrical equipment of the invention.
The implication marked in figure：1- vibrators, 2- emission sensors, 3- gas insulated combined electrical equipment shells, 4- phonons are brilliant
Body material, 5- receives sensor, 6- disc insulators, 7- oscillographs, 8- guide rods, 9- closing panels, 10- air gauges, 11- valves
Door.
Embodiment
The invention will be further described below in conjunction with the accompanying drawings.Following examples are only used for clearly illustrating the present invention
Technical scheme, and can not be limited the scope of the invention with this.
Fig. 1 is the structural representation of vibration signal propagation characteristic experimental rig in gas insulated combined electrical equipment of the invention,
The present invention proposes vibration signal propagation characteristic experimental rig in gas insulated combined electrical equipment, including gas insulated combined electrical equipment shell
3rd, vibrator 1, oscillograph 7, gas insulated combined electrical equipment shell 3 are internally provided with experiment cavity, test the inside of cavity along water
Square emission sensor 2 is provided with to being provided with guide rod 8, guide rod 8, emission sensor 2 is connected with vibrator 1；Gas is exhausted
The top of edge combined electrical apparatus shell 3 is provided with several and receives sensor 5, receives sensor 5 and is connected with oscillograph；Gas is exhausted
Edge combined electrical apparatus shell 3 is provided at both ends with closing panel 9, and closing panel 9 made using metal material；Gas-insulated combination electricity
The lower end of device shell 3 is respectively arranged with air gauge 10, the valve for filling SF6 gases for measuring experiment inside cavity pressure
11。
The two ends of experiment cavity are sealed using phonon crystal material 4, and guide rod 8 is in close contact with phonon crystal material 4.
The centre of experiment cavity is provided with disc insulator 6, and experiment cavity includes left end experiment cavity, right-hand member experiment cavity, left end examination
Test cavity and one section of cavity is connected into by disc insulator 6 with right-hand member experiment cavity；Disc insulator 6 is changeable type.
The thickness of phonon crystal material 4 is 150mm；The length that left end tests cavity and right-hand member experiment cavity is
1300mm, left end experiment cavity tests the end face diameter of cavity for 560mm, a diameter of 100mm of guide rod 8 with right-hand member, guide rod 8
Length is 1000mm.
Oscillograph 7 uses Tyke 4104, and the frequency characteristic of oscillograph 7 is four-way, 1G bandwidth, 5GHz sample rates；Exciting
Device 1 uses high-voltage pulse generator, is used as mechanical oscillation signal generating means, will by the emission sensor 2 on guide rod 8
Mechanical oscillation signal is transferred on guide rod 8, and guide rod 8 is made using aluminum metal material, the producible high-voltage pulse of vibrator 1
Voltage is no more than 20kV；Emission sensor 2 is 0 ~ 20kHz with the frequency range for receiving sensor 5；Sensor 5 is received to be used for
Receive the mechanical oscillation signal transmitted from emission sensor.
The method that the present invention also proposes vibration signal propagation characteristic experimental rig in gas insulated combined electrical equipment, such as Fig. 2 institutes
What is shown is the schematic flow sheet of vibration signal propagation characteristic test method in gas insulated combined electrical equipment of the invention, is specifically included
Following steps：
Step SS1 replaces the disc insulator 6 tested in the middle of cavity using hollow metallic cylinder, keeps experiment cavity
Length is constant, it is ensured that mechanical oscillation signal is not propagated by disc insulator 6, is now sent out using vibrator 1 and generation sensor 2
Mechanical oscillation signal is projected, the reception of mechanical oscillation signal is carried out by receiving the oscillograph 7 of sensor 5 and high speed, is obtained
The mechanical oscillation signal of disc insulator 6 is not passed through；
Step SS2 loads onto disc insulator 6, changes hollow metallic cylinder, and benzvalene form is passed through in repeat step SS1, acquisition
The mechanical oscillation signal of insulator 6；
Step SS3 is compared the step SS1 and step SS2 mechanical oscillation signals obtained in time domain and frequency domain respectively
Compared with maximum amplitude, three characteristic parameters of average amplitude and signal energy of the main comparison signal of time-domain signal, frequency-region signal are main
The frequency distribution feature of comparison signal；
Step SS4 obtains disc insulator 6 to mechanical oscillation signal propagation characteristic by time domain contrast and frequency domain contrast
Influence, compares and the mechanical oscillation signal that sensor 5 is received is received at diverse location, and then obtains mechanical oscillation signal in GIS
In propagation characteristic；
Step SS5 changes different type, the disc insulator 6 of different materials, repeat step SS1 ~ step SS4, and then obtains
Mechanical oscillation signal during disc insulator 6 must be passed through, so as to study disc insulator 6 to mechanical oscillation signal propagation characteristic
Influence.
Described above is only the preferred embodiment of the present invention, it is noted that for the ordinary skill people of the art
For member, without departing from the technical principles of the invention, some improvement and deformation can also be made, these improve and deformed
Also it should be regarded as protection scope of the present invention.
Claims (9)
1. vibration signal propagation characteristic experimental rig in gas insulated combined electrical equipment, it is characterised in that including gas-insulated combination
Electric appliance casing (3), vibrator (1), oscillograph (7), the gas insulated combined electrical equipment shell (3) are internally provided with test cavity
Body, the inside of the experiment cavity is horizontally disposed to be had and is provided with emission sensor on guide rod (8), the guide rod (8)
(2), the emission sensor (2) is connected with the vibrator (1)；The top of the gas insulated combined electrical equipment shell (3)
It is provided with several and receives sensor (5), the reception sensor (5) is connected with the oscillograph；The gas-insulated group
That closes electric appliance casing (3) is provided at both ends with closing panel (9)；The lower end of the gas insulated combined electrical equipment shell (3) is set respectively
It is equipped with air gauge (10), the valve (11) for filling SF6 gases for measuring experiment inside cavity pressure.
2. vibration signal propagation characteristic experimental rig in gas insulated combined electrical equipment according to claim 1, its feature exists
In the two ends of the experiment cavity are sealed using phonon crystal material (4), the guide rod (8) and the phonon crystal material
Expect that (4) are in close contact.
3. vibration signal propagation characteristic experimental rig in gas insulated combined electrical equipment according to claim 2, its feature exists
In the thickness of the phonon crystal material (4) is 150mm.
4. vibration signal propagation characteristic experimental rig in gas insulated combined electrical equipment according to claim 1, its feature exists
In the centre of the experiment cavity is provided with disc insulator (6), and the experiment cavity includes left end experiment cavity, right-hand member examination
Cavity is tested, the left end experiment cavity connects into one section of cavity with right-hand member experiment cavity by the disc insulator (6)；
The disc insulator (6) is changeable type.
5. vibration signal propagation characteristic experimental rig in gas insulated combined electrical equipment according to claim 4, its feature exists
In, the length that left end experiment cavity tests cavity with the right-hand member is 1300mm, the left end experiment cavity with it is described
Right-hand member tests the end face diameter of cavity for 560mm, a diameter of 100mm of the guide rod (8), and the length of the guide rod (8) is
1000mm。
6. vibration signal propagation characteristic experimental rig in gas insulated combined electrical equipment according to claim 1, its feature exists
In the oscillograph (7) uses Tyke 4104, and the frequency characteristic of the oscillograph (7) is four-way, 1G bandwidth, 5GHz samplings
Rate.
7. vibration signal propagation characteristic experimental rig in gas insulated combined electrical equipment according to claim 1, its feature exists
In the vibrator (1) uses high-voltage pulse generator, and the voltage of the producible high-voltage pulse of the vibrator (1) is no more than
20kV。
8. vibration signal propagation characteristic experimental rig in gas insulated combined electrical equipment according to claim 1, its feature exists
In the frequency range of the emission sensor (2) and the reception sensor (5) is 0~20kHz.
9. the method for vibration signal propagation characteristic experimental rig in the gas insulated combined electrical equipment described in claim 4 is used, its
It is characterised by, specifically includes following steps：
Step SS1 replaces the disc insulator (6) tested in the middle of cavity using hollow metallic cylinder, keeps experiment cavity long
Degree is constant, it is ensured that mechanical oscillation signal is not propagated by disc insulator (6), now utilizes vibrator (1) and generation sensor
(2) launch mechanical oscillation signal, mechanical oscillation signal is carried out by the oscillograph (7) for receiving sensor (5) and high speed
Receive, obtain without the mechanical oscillation signal by disc insulator (6)；
Step SS2 loads onto disc insulator (6), changes hollow metallic cylinder, and repeat step SS1 obtains exhausted by benzvalene form
The mechanical oscillation signal of edge (6)；
The step SS1 and step SS2 mechanical oscillation signals obtained are compared by step SS3 in time domain and frequency domain respectively, when
Maximum amplitude, three characteristic parameters of average amplitude and signal energy, the frequency of frequency-region signal comparison signal of domain signal comparison signal
Rate distribution characteristics；
Step SS4 is contrasted by time domain and frequency domain contrasts the shadow for obtaining disc insulator (6) to mechanical oscillation signal propagation characteristic
Ring, compare and the mechanical oscillation signal that sensor (5) is received is received at diverse location, and then obtain mechanical oscillation signal in GIS
In propagation characteristic；
Step SS5 changes different type, the disc insulator (6) of different materials, repeat step SS1~step SS4, and then obtains
By mechanical oscillation signal when disc insulator (6), so as to study disc insulator (6) to mechanical oscillation signal propagation characteristic
Influence.
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| CN111753392A (en) * | 2020-05-18 | 2020-10-09 | 缤谷电力科技（上海）有限公司 | GIS vibration characteristic test system and method containing local hot spots |
| CN112924123A (en) * | 2020-12-30 | 2021-06-08 | 广东电网有限责任公司电力科学研究院 | Vibration device for checking vibration characteristic of gas insulation transformer bank component |
| CN113504020A (en) * | 2021-05-24 | 2021-10-15 | 国网江苏省电力有限公司电力科学研究院 | GIS vibration defect simulation system and method |
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2015
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| CN202886560U (en) * | 2012-10-22 | 2013-04-17 | 宁夏电力公司电力科学研究院 | Field detecting system for gas insulated switch mechanical faults |
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