CN106199360A - A kind of GIS disc insulator surface defect model - Google Patents
A kind of GIS disc insulator surface defect model Download PDFInfo
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- CN106199360A CN106199360A CN201610773807.8A CN201610773807A CN106199360A CN 106199360 A CN106199360 A CN 106199360A CN 201610773807 A CN201610773807 A CN 201610773807A CN 106199360 A CN106199360 A CN 106199360A
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- surface defect
- disc insulator
- defect model
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Abstract
The present invention provides a kind of GIS disc insulator surface defect model, it is characterized in that, described surface defect model includes high-field electrode and ground electrode, truncated cone-shaped epoxidized block it is placed with between described high-field electrode and ground electrode, in order to simulate disc insulator material and structure, described high-field electrode, truncated cone-shaped epoxidized block and ground electrode three are in close contact.The present invention solves the problem carrying out testing when prior art cannot exist filthy for disc insulator surface, meets the needs of GIS surface defect flash-over characteristic research, opens a brand-new path for GIS disc insulator surface defect flash-over characteristic research.
Description
Technical field
The invention belongs to technical field of electric power, be specifically related to a kind of GIS disc insulator surface defect model.
Background technology
Along with the development of national economy, the requirement to power system reliability service is more and more higher, gas insulated combined electrical equipment
(GIS, Gas Insulated Switchgear) is the key equipment of power system power transmission and transformation, has important work in electrical network
With, its reliability of operation is directly connected to the safety and stablization of power system.The statistical analysis of physical fault is shown, insulation
Affect GIS properly functioning main cause during fault, and shelf depreciation is to cause the main cause of insulation fault.Current GIS
Use SF6 gas-insulated structure, use field-installed form, more severe due to site environment during Assembling, the most mixed
Enter various dust, particularly quasiconductor dust.These quasiconductor dust can be attached on disc insulator, forms disc insulator
Surface defect, and then under the effect of electric field, produce shelf depreciation.Disc insulator surface-discharge easily causes insulator arc-over,
Causing the accident, therefore study it, particularly study its flash-over characteristic, the safe operation for GIS has weight
Want meaning.
Detection GIS partial discharge mainly has three kinds of methods at present, is supersonic testing method, superfrequency detection method and pulse respectively
Current method.Supersonic testing method is easily achieved and operates, but quantitative error is bigger；Superfrequency detection method strong anti-interference performance, but
Cannot accomplish quantitatively；Pulse current method can provide discharge capacity but interference free performance is more weak.Therefore same defect is respectively adopted
Multiple detection method is studied, and can strengthen the understanding to it undoubtedly and be fully understood by its flash-over characteristic.Owing to surface-discharge is easy
In causing insulation flashover, study more currently for the electric discharge resulted in disc insulator surface field collection, but for simulation
The research of the disc insulator surface filth of practical situation is less.
Summary of the invention
It is an object of the invention to: in order to overcome drawbacks described above, the present invention proposes a kind of benzvalene form insulation simulating reality
The model that sub-surface is filthy.
The technical solution adopted in the present invention is: a kind of GIS disc insulator surface defect model, it is characterised in that institute
State surface defect model and include high-field electrode and ground electrode, between described high-field electrode and ground electrode, be placed with truncated cone-shaped epoxy
Block, in order to simulate disc insulator material and structure, described high-field electrode, truncated cone-shaped epoxidized block and ground electrode three closely connect
Touch.
As further alternative technical scheme, in such scheme, described surface defect model is placed on full SF6 gas
Lucite cylinder container in, wherein on container, bottom crown uses aluminum, middle uses lucite to seal.
As further alternative technical scheme, in such scheme, described truncated cone-shaped epoxidized block surface smear quasiconductor is dirty
Dirty thing, the surface filth thing in simulating actual conditions.
As further alternative technical scheme, in such scheme, described high-field electrode uses the sphere electricity of brass material
Pole, described ground electrode uses the disc electrode of brass material.
As further alternative technical scheme, in such scheme, described GIS disc insulator surface defect model and work
Frequently partial discharge-free test transformer, discharging detecting system composition GIS disc insulator surface defect discharge test device, three passes through
Circuit is connected.
As further alternative technical scheme, in such scheme, described power frequency partial discharge-free test transformer is under 200kV
Office is high-volume less than 10pC.
As further alternative technical scheme, in such scheme, described discharging detecting system includes that pulse current method is examined
Examining system and/or superfrequency method detecting system.
As further alternative technical scheme, in such scheme, when described discharging detecting system includes pulse current method
During detecting system, described discharging detecting system also includes coupling electric capacity that circuit connects, measures impedance drawn game and put detector, described
Coupling electric capacity uses the halo-free capacitor of high pressure, and rated voltage 200kV, capacitance 1000pF, the detection of described partial discharge detection instrument is adopted
Sample rate is 100MHz, carries a width of 100kHz-30MHz, and sensitivity is 1pC.
As further alternative technical scheme, in such scheme, when described discharging detecting system includes that superfrequency method is examined
During examining system, described discharging detecting system also includes superfrequency sensor and oscillograph, and described superfrequency sensor uses isogonism
Helical antenna, detection frequency band is 300MHz-1.5GHz, and described oscillograph sample rate is 2.5GS/s, bandwidth 500MHz.
The invention has the beneficial effects as follows: the present invention solves prior art cannot exist filth for disc insulator surface
The problem of Shi Jinhang test, meets the needs of GIS surface defect flash-over characteristic research, for GIS disc insulator surface defect
Flash-over characteristic research opens a brand-new path.
Accompanying drawing explanation
Fig. 1 is the application schematic diagram of the GIS disc insulator surface defect model of the present invention.
Symbol description in accompanying drawing: 1. top crown, 2. high-field electrode, 3. truncated cone-shaped epoxidized block, 4. ground electrode 4,5.
Lucite cylinder container, 6. quasiconductor dunghill, 7. bottom crown.
Detailed description of the invention
In order to be more fully understood that the present invention, it is further elucidated with present disclosure below in conjunction with embodiment, but the present invention
Content is not limited solely to the following examples.The present invention can be made various changes or modifications by those skilled in the art, these
The equivalent form of value is equally within the scope of claims listed by the application limit.
The embodiment of the present invention provides a kind of GIS disc insulator surface defect model, and described surface defect model includes height
Piezoelectricity pole and ground electrode, be placed with truncated cone-shaped epoxidized block between described high-field electrode and ground electrode, in order to simulate disc insulator
Material and structure, described high-field electrode, truncated cone-shaped epoxidized block and ground electrode three are in close contact.
In order to test conveniently, it is preferred that in another embodiment, described discharging model is placed on full SF6 gas
In lucite cylinder container, wherein on container, bottom crown uses aluminum, middle employing lucite to seal.
It is furthermore preferred that in another embodiment: truncated cone-shaped epoxidized block surface smear quasiconductor dunghill, such as sulfuration argentum powder
Surface filth thing in the simulating actual conditions of end.
It is furthermore preferred that in another embodiment: described high-field electrode uses the radius tip electrode of brass material, described ground electricity
Pole uses the disc electrode of brass material.
Described GIS disc insulator surface defect model can be with power frequency partial discharge-free test transformer, discharging detecting system
Composition GIS disc insulator surface defect discharge test device, three is connected by circuit.
It is furthermore preferred that in another embodiment: described discharging detecting system include pulse current method detecting system and/or
Superfrequency method detecting system.Both detecting systems belong to prior art, do not repeat them here.
In order to preferably meet the requirement of power frequency partial discharge-free test transformer, it is furthermore preferred that in another embodiment: institute
State transformator office under 200kV and be high-volume less than 10pC.It can be appreciated that those skilled in the art can also advise for test objective
Determine other office's high-volume parameter.
It is furthermore preferred that in another embodiment: when described detecting system includes pulse current method detecting system, described
Detecting system also includes coupling electric capacity that circuit connects, measures impedance drawn game and put detector, described coupling electric capacity use high pressure without
Dizzy capacitor, rated voltage 200kV, capacitance 1000pF, the detection sample rate of described partial discharge detection instrument is 100MHz, carries a width of
100kHz-30MHz, sensitivity is 1pC, the PD-Checker that such as Ying Tepu company of Italy produces.
It is furthermore preferred that in another embodiment: when described detecting system includes superfrequency method detecting system, described inspection
Examining system also includes superfrequency sensor and oscillograph, and described superfrequency sensor uses equiangular spiral antenna, detects frequency band and is
300MHz-1.5GHz, described oscillograph sample rate is 2.5GS/s, bandwidth 500MHz, such as Tyke 4054 oscillograph.
Fig. 1 is the application schematic diagram of surface defect model in the present invention, and now surface defect model is positioned over lucite
In cylinder container 5, wherein: container top crown 1 and bottom crown 7 are aluminum, top crown connects high-field electrode 2, bottom crown ground electrode 4,
It is truncated cone-shaped epoxidized block 3 between high-field electrode and ground electrode, epoxidized block surface smear quasiconductor dunghill 6.In actual tests, root
According to the needs of test, each parameter can be adjusted flexibly.
These are only embodiments of the invention, be not limited to the present invention, therefore, all spirit in the present invention and
Within principle, any modification, equivalent substitution and improvement etc. done, within should be included in scope of the presently claimed invention.
Claims (9)
1. a GIS disc insulator surface defect model, it is characterised in that described surface defect model include high-field electrode and
Ground electrode, is placed with truncated cone-shaped epoxidized block between described high-field electrode and ground electrode, in order to simulate disc insulator material and knot
Structure, described high-field electrode, truncated cone-shaped epoxidized block and ground electrode three are in close contact.
GIS disc insulator surface defect model the most according to claim 1, it is characterised in that described surface defect mould
Type is placed in the lucite cylinder container of full SF6 gas, and wherein on container, bottom crown uses aluminum, the organic glass of middle employing
Glass seals.
GIS disc insulator surface defect model the most according to claim 2, it is characterised in that described truncated cone-shaped epoxy
Block surface smear quasiconductor dunghill, the surface filth thing in simulating actual conditions.
GIS disc insulator surface defect model the most according to claim 2, it is characterised in that described high-field electrode is adopted
With the radius tip electrode of brass material, described ground electrode uses the disc electrode of brass material.
GIS disc insulator surface defect model the most according to claim 1, it is characterised in that described GIS benzvalene form insulate
Sub-surface defect model is put with power frequency partial discharge-free test transformer, discharging detecting system composition GIS disc insulator surface defect
Electric test device, three is connected by circuit.
GIS disc insulator surface defect model the most according to claim 5, it is characterised in that described power frequency is put without office
Testing transformer office under 200kV is high-volume less than 10pC.
GIS disc insulator surface defect model the most according to claim 5, it is characterised in that described discharge examination system
System includes pulse current method detecting system and/or superfrequency method detecting system.
GIS disc insulator surface defect model the most according to claim 7, it is characterised in that when described discharge examination
When system includes pulse current method detecting system, described discharging detecting system also includes coupling electric capacity that circuit connects, measures resistance
Detector is put in anti-drawn game, and described coupling electric capacity uses the halo-free capacitor of high pressure, rated voltage 200kV, and capacitance 1000pF is described
The detection sample rate of partial discharge detection instrument is 100MHz, carries a width of 100kHz-30MHz, and sensitivity is 1pC.
GIS disc insulator surface defect model the most according to claim 7, it is characterised in that when described discharge examination
When system includes superfrequency method detecting system, described discharging detecting system also includes superfrequency sensor and oscillograph, described spy
High frequency sensors uses equiangular spiral antenna, and detection frequency band is 300MHz-1.5GHz, and described oscillograph sample rate is 2.5GS/s,
Bandwidth 500MHz.
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| CN201610773807.8A CN106199360A (en) | 2016-08-31 | 2016-08-31 | A kind of GIS disc insulator surface defect model |
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| CN201610773807.8A CN106199360A (en) | 2016-08-31 | 2016-08-31 | A kind of GIS disc insulator surface defect model |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106990336A (en) * | 2017-03-23 | 2017-07-28 | 国家电网公司 | One kind is used to simulate entity GIS disc insulator creeping discharge models |
| CN107527539A (en) * | 2017-08-04 | 2017-12-29 | 国网安徽省电力公司检修公司 | The metallurgical filthy emulation mode influenceed on insulator surface electric field |
| CN108375721A (en) * | 2018-02-07 | 2018-08-07 | 国网上海市电力公司 | A kind of GIS interior insulators air blister defect model |
| CN108490320A (en) * | 2018-03-21 | 2018-09-04 | 广东电网有限责任公司电力科学研究院 | SF is tested in a kind of GIS insulator surfaces defect model6The method of decomposition product |
| CN108490319A (en) * | 2018-03-21 | 2018-09-04 | 广东电网有限责任公司电力科学研究院 | A kind of GIS defects of insulator model and test SF6The method of decomposition product |
| CN109752623A (en) * | 2018-12-07 | 2019-05-14 | 国网浙江省电力有限公司金华供电公司 | A kind of device causing overhead transmission line failure for the sub- open defect of analog insulation |
| CN110780167A (en) * | 2019-11-12 | 2020-02-11 | 西南交通大学 | Insulating property detection device for barrel type composite insulating material |
| CN113109673A (en) * | 2021-03-10 | 2021-07-13 | 中国电力科学研究院有限公司 | Method for simulating movement of metal particle defects on surface of GIS insulator |
| CN114919108A (en) * | 2020-09-15 | 2022-08-19 | 国网山东省电力公司济南供电公司 | Be applied to vulcanizer that GIS sealing washer was changed |
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| CN105784569A (en) * | 2016-04-12 | 2016-07-20 | 西安交通大学 | Visual experiment platform for researching movement of free conductive particles in GIS |
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Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106990336A (en) * | 2017-03-23 | 2017-07-28 | 国家电网公司 | One kind is used to simulate entity GIS disc insulator creeping discharge models |
| CN107527539B (en) * | 2017-08-04 | 2020-09-04 | 国网安徽省电力公司检修公司 | Simulation method for influence of metallurgical contamination on surface electric field of insulator |
| CN107527539A (en) * | 2017-08-04 | 2017-12-29 | 国网安徽省电力公司检修公司 | The metallurgical filthy emulation mode influenceed on insulator surface electric field |
| CN108375721A (en) * | 2018-02-07 | 2018-08-07 | 国网上海市电力公司 | A kind of GIS interior insulators air blister defect model |
| CN108490320A (en) * | 2018-03-21 | 2018-09-04 | 广东电网有限责任公司电力科学研究院 | SF is tested in a kind of GIS insulator surfaces defect model6The method of decomposition product |
| CN108490319A (en) * | 2018-03-21 | 2018-09-04 | 广东电网有限责任公司电力科学研究院 | A kind of GIS defects of insulator model and test SF6The method of decomposition product |
| CN109752623A (en) * | 2018-12-07 | 2019-05-14 | 国网浙江省电力有限公司金华供电公司 | A kind of device causing overhead transmission line failure for the sub- open defect of analog insulation |
| CN110780167A (en) * | 2019-11-12 | 2020-02-11 | 西南交通大学 | Insulating property detection device for barrel type composite insulating material |
| CN110780167B (en) * | 2019-11-12 | 2021-08-17 | 西南交通大学 | Insulating property detection device for barrel type composite insulating material |
| CN114919108A (en) * | 2020-09-15 | 2022-08-19 | 国网山东省电力公司济南供电公司 | Be applied to vulcanizer that GIS sealing washer was changed |
| CN114919108B (en) * | 2020-09-15 | 2024-03-19 | 国网山东省电力公司济南供电公司 | Be applied to vulcanizer that GIS sealing washer was changed |
| CN113109673A (en) * | 2021-03-10 | 2021-07-13 | 中国电力科学研究院有限公司 | Method for simulating movement of metal particle defects on surface of GIS insulator |
| CN113109673B (en) * | 2021-03-10 | 2023-09-22 | 中国电力科学研究院有限公司 | Method for simulating movement of metal particle defects on surface of GIS insulator |
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Application publication date: 20161207 |