CN208654275U - Partial discharge test system under the combination of gases electric appliance surge voltage of T-type structure - Google Patents
Partial discharge test system under the combination of gases electric appliance surge voltage of T-type structure Download PDFInfo
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- CN208654275U CN208654275U CN201821185245.6U CN201821185245U CN208654275U CN 208654275 U CN208654275 U CN 208654275U CN 201821185245 U CN201821185245 U CN 201821185245U CN 208654275 U CN208654275 U CN 208654275U
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- 238000012360 testing method Methods 0.000 title claims abstract description 39
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- 238000005259 measurement Methods 0.000 claims abstract description 11
- 230000002950 deficient Effects 0.000 claims abstract description 5
- 230000005611 electricity Effects 0.000 claims description 6
- 238000001514 detection method Methods 0.000 abstract description 16
- 230000035945 sensitivity Effects 0.000 abstract description 3
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- 229910052751 metal Inorganic materials 0.000 description 5
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- 238000010586 diagram Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 230000005684 electric field Effects 0.000 description 3
- 230000005764 inhibitory process Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 238000011160 research Methods 0.000 description 3
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- 241000208340 Araliaceae Species 0.000 description 1
- 235000005035 Panax pseudoginseng ssp. pseudoginseng Nutrition 0.000 description 1
- 235000003140 Panax quinquefolius Nutrition 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- VMQPMGHYRISRHO-UHFFFAOYSA-N benzvalene Chemical group C1=CC2C3C1C32 VMQPMGHYRISRHO-UHFFFAOYSA-N 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000012512 characterization method Methods 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 230000005284 excitation Effects 0.000 description 1
- 235000008434 ginseng Nutrition 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 239000010931 gold Substances 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000005070 sampling Methods 0.000 description 1
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Abstract
Partial discharge test system under a kind of combination of gases electric appliance surge voltage of T-type structure, the system comprises impulse voltage generators, high-voltage conducting wires, casing, GIS shell, GIS guide rod section a, GIS guide rod section b, spheric electrode, band tip defect spheric electrode, the extra-high video sensor of guide rod section a, the extra-high video sensor of guide rod section b, guide rod section a disc insulator, guide rod section b disc insulator, oscillograph, it is characterized in that, the pilot system uses T-type structure, while to the application for carrying out voltage containing defective and electrode without defect and carrying out measurement of partial discharge, accurate local discharge signal is obtained by comparing two paths of signals, avoid external disturbance, improve the accuracy of detection.The system utilizes a kind of T-type GIS cavity body structure, using two electrodes, while using the measurement of extra-high video sensor progress signal, the detection of local discharge signal is carried out using the comparison of two paths of signals, greatly improves the sensitivity of detection.
Description
Technical field
The utility model relates to electric equipment test fields, more particularly to a kind of combination of gases electricity based on T-type structure
Partial discharge test system under device surge voltage.
Background technique
Combination of gases electric appliance (Gas Insulated Switchgear, GIS) is the key equipment in power grid, is had
The feature that maintenance is small, operational reliability is high.GIS device can be in the process of running by lightning surge, lightning surge
A kind of overvoltage of nature self-assembling formation has the characteristics that amplitude is high, waveform forward position is steep.Furthermore GIS is in the process of running
The effect of switching overvoltage can also be born.
It has been a kind of relatively conventional pilot project that scene, which carries out impulse withstand voltage test at present to GIS, is rushed by scene
It hits pressure test and can be found that some industrial frequency withstand voltages test the defect that can't find, this is for guaranteeing that the safe operation of equipment has
Significance.
Shelf depreciation is the important characterization parameter of insulation degradation, can be lacked to hiding insulation by the detection of shelf depreciation
It is trapped into row effectively discovery, and can be handled before breakdown fault occurs for equipment, so as to avoid equipment breakdown to the shadow of power grid
It rings.The detection of shelf depreciation has studied many years under power-frequency voltage, has more mature detection technique, but in impact electricity
The detection that pressure carries out shelf depreciation is also less, but is also paid attention in recent years.The detection of shelf depreciation is difficult under surge voltage
Point is the inhibition interfered, since impulse voltage generator itself is to generate waveform using ball-gap discharge, to the accurate of detection
Degree tool has a significant impact, this also results in the Characteristics of Partial Discharge for being difficult to study GIS under surge voltage.Therefore, how accurately
Acquisition surge voltage under partial discharge pulse, and then to its flash-over characteristic carry out research be current urgent need to solve the problem.
Utility model content
The utility model in order to solve it is above-mentioned how partial discharge pulse under accurate acquisition surge voltage, and then it is put
It is current urgent need to solve the problem that electrical characteristics, which carry out research,.The utility model is directed to the research of GIS partial discharge under surge voltage,
Provide partial discharge test system under a kind of combination of gases electric appliance surge voltage based on T-type structure.
The system utilizes a kind of T-type GIS cavity body structure, carries out letter using two electrodes, while using extra-high video sensor
Number measurement, using two paths of signals comparison carry out local discharge signal detection, greatly improve the sensitivity of detection.
The following technical solution is employed for the utility model:
Partial discharge test system under a kind of combination of gases electric appliance surge voltage of T-type structure of the utility model, it is described
System include impulse voltage generator, high-voltage conducting wires, casing, GIS shell, GIS guide rod section a, GIS guide rod section b, spheric electrode,
Band tip defect spheric electrode, the extra-high video sensor of guide rod section a, the extra-high video sensor of guide rod section b, guide rod section a disc insulator,
Guide rod section b disc insulator, oscillograph, which is characterized in that the pilot system uses T-type structure, while to containing defective and
Electrode without defect carries out voltage application and carries out measurement of partial discharge, obtains accurately part by comparing two paths of signals and puts
Electric signal avoids external disturbance, improves the accuracy of detection.
Partial discharge test system under a kind of combination of gases electric appliance surge voltage of T-type structure, it is characterized in that
In, the pilot system uses T-type structure, it is connected using two guide rod section a, b consistent in length with test electrode, two guide rods
Section and T-type structure is formed with the guide rod of power supply connected component.
Partial discharge test system under a kind of combination of gases electric appliance surge voltage of T-type structure, it is characterized in that
In impulse voltage generator is connected by high-voltage conducting wires with casing, and high pressure is accessed T-type pilot system.
Partial discharge test system under a kind of combination of gases electric appliance surge voltage of T-type structure, it is characterized in that
In guide rod section a, guide rod section b are supported by insulator a and insulator b respectively.
Partial discharge test system under a kind of combination of gases electric appliance surge voltage of T-type structure, it is characterized in that
In test electrode is spheric electrode, and complete spheric electrode is arranged in the end guide rod section a, and band tip defect spheric electrode is arranged
In the end guide rod section b.
Partial discharge test system under a kind of combination of gases electric appliance surge voltage of T-type structure, it is characterized in that
In measurement of partial discharge uses extra-high video sensor, bandwidth 300MHz-3GHz, using two sensors respectively to two electricity
Pole measures.
Partial discharge test system under a kind of combination of gases electric appliance surge voltage of T-type structure, it is characterized in that
In the extra-high video sensor of two-way parameter having the same carries out the standard of local discharge signal by comparing two-way sensor signal
Really obtain.
The advantages of the utility model and effect are:
Partial discharge test system under a kind of combination of gases electric appliance surge voltage based on T-type structure of the utility model,
The system utilize a kind of T-type GIS cavity body structure, using two electrodes, at the same using extra-high video sensor progress signal measurement,
The detection that local discharge signal is carried out using the comparison of two paths of signals, greatly improves the sensitivity of detection.
The pilot system uses T-type structure, while the application to voltage is carried out containing defective and electrode without defect
And measurement of partial discharge is carried out, accurate local discharge signal is obtained by comparing two paths of signals, avoids external disturbance, is improved
The accuracy of detection.
Detailed description of the invention
Fig. 1 is the application schematic diagram of the utility model.
Fig. 2 is comparing by two-way ultrahigh-frequency signal for the utility model to obtain local discharge signal schematic diagram.
Specific embodiment
The utility model is described in further detail below in conjunction with specific embodiment:
Embodiment 1
Partial discharge test system under the combination of gases electric appliance surge voltage of the T-type structure of the utility model, the system
Including impulse voltage generator 1, high-voltage conducting wires 2, casing 3, GIS shell 4, GIS guide rod section a5, GIS guide rod section b6, spheric electrode
7, band tip defect spheric electrode 8, the extra-high video sensor 9 of guide rod section a, the extra-high video sensor 10 of guide rod section b, guide rod section a benzvalene form
Insulator 11, guide rod section b disc insulator 12, oscillograph 13, which is characterized in that the pilot system uses T-type structure, simultaneously
To the application for carrying out voltage containing defective and electrode without defect and measurement of partial discharge is carried out, is obtained by comparing two paths of signals
Accurate local discharge signal is obtained, external disturbance is avoided, improves the accuracy of detection.
Partial discharge test system under the combination of gases electric appliance surge voltage of the T-type structure, it is characterized in that being, institute
Pilot system is stated using T-type structure, is connected using two guide rod section a5, b6 consistent in length with test electrode, two guide rod sections
T-type structure is formed with the guide rod of power supply connected component.
Partial discharge test system under the combination of gases electric appliance surge voltage of the T-type structure, it is characterized in that being, institute
Test electrode is stated using spheric electrode, one of electrode is complete ball electrode, another electrode is to contain tip defect
Ball electrode.
Partial discharge test system under the combination of gases electric appliance surge voltage of the T-type structure, it is characterized in that being, institute
It states the extra-high video sensor of sampling respectively while two electrodes is measured, carry out part by comparing two-way sensor signal and put
The accurate acquisition of electric signal, the extra-high video sensor of two-way parameter having the same.
For the utility model using impulse voltage generator as driving voltage, the amplitude and parameter of impulse voltage generator can
It is any to adjust.
Surge voltage is introduced on the high pressure guide rod in test cavity by bushing, and test cavity uses and practical GIS
The consistent aluminum metal shell of equipment and materials simulates practical GIS device structure, test cavity ground connection.SF6 gas is filled in test cavity body
Body.
High pressure guide rod is respectively divided into two-way, respectively GIS guide rod section 1 and guide rod section 2 after entering GIS test cavity, and two
Guide rod has identical length.Two sections of guide rod segment trailers are spheric electrode, and the radius of spheric electrode can be according to the actual situation
Any to adjust, one of spheric electrode zero defect, field distribution is slightly uneven electric field, another spheric electrode is with gold
Belong to point electrode, the length and radius of curvature of metal tip electrode can be adjusted arbitrarily.There is superfrequency in two GIS guide rod segment trailers
Sensor, two sensors have identical parameter, bandwidth 300MHz-3GHz.
Since the spheric electrode without defect is that slightly uneven electric field is distributed, once there is shelf depreciation and will lead to hit
It wears, therefore its partial discharge starting voltage is equal to its breakdown voltage.Spheric electrode containing metal tip defect is extremely uneven due to presence
Even electric field, partial discharge starting voltage are far below its breakdown voltage.Therefore when the spheric electrode containing metal tip defect is adding outside
When generating shelf depreciation under the excitation of voltage, only local discharge signal can be detected on its corresponding extra-high video sensor.And
For interference signal caused by impulse voltage generator, then interference signal can be all detected on the two sensors.Then lead to
It crosses and compares the inhibition that the signal of two-way sensor can be interfered, and then obtain accurate local discharge signal.
The core concept of the utility model is the T-type structure using GIS, it is GIS sections identical at two in arrange
Two electrodes can generate shelf depreciation test voltage is next, another will not generate shelf depreciation, then by two electricity
The inhibition to be interfered is detected while the signal of pole, obtains accurate local discharge signal.
Fig. 1 is the application schematic diagram of the utility model, in which: impulse voltage generator 1 can produce the impact of different parameters
Voltage, parameter include wave head time and wave rear time, and surge voltage is introduced the high pressure that GIS tests cavity by bushing
On guide rod.GIS guide rod is T-type structure, and wherein guide rod section a and guide rod section b has identical length, and the end guide rod section a
Spheric electrode zero defect, the spheric electrode of the end guide rod section b contains metal tip defect.In two ends of GIS cavity
It is equipped with extra-high video sensor, with identical parameter.Due to its partial discharge starting voltage of the spheric electrode of the end guide rod section a
It is consistent with breakdown voltage, and its partial discharge starting voltage of the spheric electrode of the end guide rod section b is far below breakdown voltage, therefore is adding outside
Once the spheric electrode of guide rod section b generates local discharge signal under voltage drive, then the spheric electrode of guide rod section a, which will not generate, appoints
What discharge signal.Then it can identify interference and real local discharge signal by comparing the signal of the extra-high video sensor of two-way.Tool
For body schematic diagram as shown in Fig. 2, 14 signals arrived for the superfrequency sensor measurement of the end surge voltage lower guide rod section a, 15 be to lead
The signal that the superfrequency sensor measurement of the end rod segment b arrives due to additional interference while being applied on two sensor devices,
Its interference with identical amplitude and time.But sensor 10 can only be examined due to the barrier effect of insulator 11 and 12
Local discharge signal caused by the spheric electrode is measured, therefore by comparing two paths of signals, it is known that 16 put for actual part
Electric signal, remaining is interference signal.
In actual tests, according to the needs of test, each competition can be adjusted flexibly, such as take: impulse voltage generator ginseng
Number can be chosen as needed, and the length and radius of curvature of metal tip can be chosen as needed, and the radius of spheric electrode can
It chooses as needed, the parameter of extra-high video sensor can be chosen as needed, the distance of superfrequency sensor distance spheric electrode
It can arbitrarily choose as needed.
The preferable specific embodiment of the above, only the utility model, the protection scope of the utility model are not limited to
This, anyone skilled in the art within the technical scope of the present disclosure, the skill that can be become apparent to
The simple change or equivalence replacement of art scheme are each fallen in the protection scope of the utility model.
Claims (3)
1. partial discharge test system under a kind of combination of gases electric appliance surge voltage of T-type structure, the system comprises impact electricity
Press generator (1), high-voltage conducting wires (2), casing (3), GIS shell (4), GIS guide rod section a(5), GIS guide rod section b(6), spherical electricity
Pole (7), the extra-high video sensor of guide rod section a (9), the extra-high video sensor of guide rod section b (10), is led at band tip defect spheric electrode (8)
Rod segment a disc insulator (11), guide rod section b disc insulator (12), oscillograph (13), which is characterized in that the pilot system
Using T-type structure, while to the application for carrying out voltage containing defective and electrode without defect and measurement of partial discharge is carried out, led to
It crosses and compares the accurate local discharge signal of two paths of signals acquisition.
2. partial discharge test system under a kind of combination of gases electric appliance surge voltage of T-type structure according to claim 1,
It is characterized in that be, the pilot system uses T-type structure, utilizes two guide rod section a(5 consistent in length), b(6) with test
Electrode is connected, two guide rod sections and the guide rod composition T-type structure with power supply connected component.
3. partial discharge test system under a kind of combination of gases electric appliance surge voltage of T-type structure according to claim 2,
It is characterized in that being, the test electrode uses spheric electrode, and one of electrode is complete ball electrode, another electrode is
Ball electrode containing tip defect.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821185245.6U CN208654275U (en) | 2018-07-25 | 2018-07-25 | Partial discharge test system under the combination of gases electric appliance surge voltage of T-type structure |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821185245.6U CN208654275U (en) | 2018-07-25 | 2018-07-25 | Partial discharge test system under the combination of gases electric appliance surge voltage of T-type structure |
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| Publication Number | Publication Date |
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| CN208654275U true CN208654275U (en) | 2019-03-26 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201821185245.6U Active CN208654275U (en) | 2018-07-25 | 2018-07-25 | Partial discharge test system under the combination of gases electric appliance surge voltage of T-type structure |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108710073A (en) * | 2018-07-25 | 2018-10-26 | 国网青海省电力公司电力科学研究院 | Partial discharge test system under the combination of gases electric appliance surge voltage of T-type structure |
-
2018
- 2018-07-25 CN CN201821185245.6U patent/CN208654275U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108710073A (en) * | 2018-07-25 | 2018-10-26 | 国网青海省电力公司电力科学研究院 | Partial discharge test system under the combination of gases electric appliance surge voltage of T-type structure |
| CN108710073B (en) * | 2018-07-25 | 2024-06-28 | 国网青海省电力公司电力科学研究院 | Partial discharge test system of T-shaped gas combined electrical apparatus under impact voltage |
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