CN203502546U - GIS partial discharging on-line monitoring device - Google Patents
GIS partial discharging on-line monitoring device Download PDFInfo
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- CN203502546U CN203502546U CN201320528053.1U CN201320528053U CN203502546U CN 203502546 U CN203502546 U CN 203502546U CN 201320528053 U CN201320528053 U CN 201320528053U CN 203502546 U CN203502546 U CN 203502546U
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- gis
- monitoring device
- line monitoring
- shell
- partial discharging
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- 238000012806 monitoring device Methods 0.000 title claims abstract description 10
- 238000007599 discharging Methods 0.000 title abstract 5
- 239000012212 insulator Substances 0.000 claims abstract description 9
- 238000001914 filtration Methods 0.000 claims abstract description 4
- 238000007493 shaping process Methods 0.000 claims abstract description 4
- 238000001514 detection method Methods 0.000 abstract 2
- 230000035945 sensitivity Effects 0.000 abstract 1
- 238000009413 insulation Methods 0.000 description 4
- 230000015556 catabolic process Effects 0.000 description 3
- 239000000463 material Substances 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 239000002923 metal particle Substances 0.000 description 2
- 238000012544 monitoring process Methods 0.000 description 2
- 238000005266 casting Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000005684 electric field Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000013528 metallic particle Substances 0.000 description 1
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- Testing Relating To Insulation (AREA)
Abstract
Provided is a GIS partial discharging on-line monitoring device. The GIS partial discharging on-line monitoring device at least comprises a GIS shell and a conducting rod arranged on the GIS shell, the GIS shell is provided with a basin type insulator, an electrode is pre-embedded close to a grounding terminal in the basin type insulator, a detection impedance is connected between the electrode and the GIS shell, the detection impedance is connected with a high-pass filtering and amplifier and is then connected with a monitor via a shaping circuit, and the monitor can detect GIS partial discharging signals. The GIS partial discharging on-line monitoring device is advantaged by simple structure, convenient and reliable usage, good anti-interference performance, and high sensitivity.
Description
Technical field
The utility model relates to a kind of GIS local discharge on-line monitoring device, belong to the device security monitoring technical field of transformer station.
Background technology
Using the Cubicle Gas-Insulated Switchgear (GIS) of SF6 as insulating medium, also claim totally enclosed type combined electrical apparatus and gas insulated transformer substation, by the electrical equipment except transformer in transformer station, comprise that short-circuiting device, disconnector, grounding switch, current transformer, voltage transformer (VT), bus and outlet casing tube etc. are all encapsulated in the metal shell of ground connection, in shell, fill using 0.3-0.4Mpa SF6 gas as insulation and arc-extinguishing medium.
The safe operation of GIS is most important to stablizing of whole electric system, once break down, will cause jurisdiction some areas and even all area power failures.Because GIS is large-scale closed composition structural system, during interruption maintenance, except needs drop into a large amount of manpower and materials, also need servicing time of growing, this will cause great loss to national economy; So before GIS breaks down, if can detect and judge internal defects situation, just seem particularly important.
Shelf depreciation is the inner tendency phenomenon that insulation breakdown occurs of GIS, and occurrence cause is conventionally: casting insulation inside exists cavity or impurity; Metal or insulating surface have tip or projection; Owing to installing accidentally or switch deciliter generation graininess or thread metal particle; these particulates can be attached to insulating surface or drop on outer casing bottom; metal particle constantly mobile or irregular jump under electric field action at outer casing bottom; when soaring, metallic particles can, with electric charge, during whereabouts, can produce shelf depreciation; Between contact, there is shelf depreciation in metallic shield.
Shelf depreciation is a breakneck signal for GIS equipment, once there is slight shelf depreciation, as got rid of not in time, will cause serious insulation breakdown, causes serious consequence.
Summary of the invention
The purpose of this utility model is to overcome the deficiency that prior art exists, and provides a kind of simple in structure, easy to use and reliable, good in anti-interference performance, highly sensitive GIS local discharge on-line monitoring device.
The purpose of this utility model completes by following technical solution, described a kind of GIS local discharge on-line monitoring device, which comprises at least a GIS shell and the conducting rod on this GIS shell, and be provided with disc insulator on described GIS shell, in described disc insulator, near earth terminal pre-plugged, there is an electrode, between described electrode and GIS shell, pick out one and detect impedance, this detects impedance by connecting after a high-pass filtering and amplifier, then by a shaping circuit connection one, can detect the monitor of GIS local discharge signal.
The utility model is GIS equipment to be carried out to effective shelf depreciation carry out on-line monitoring, can realize fault pre-alarming, and the hidden danger of fixing a breakdown in advance is effectively guaranteed power supply reliability and saved a large amount of manpower and materials; Have simple in structure, easy to use and reliable, good in anti-interference performance, highly sensitive.
Accompanying drawing explanation
Fig. 1 is structural principle schematic diagram of the present utility model.
Embodiment
Below in conjunction with accompanying drawing, the utility model is described in detail: shown in Fig. 1, a kind of GIS local discharge on-line monitoring device described in the utility model, which comprises at least a GIS shell 1 and the conducting rod 2 on this GIS shell, and be provided with disc insulator 3 on described GIS shell 1, described disc insulator 3 is interior has an electrode 4 near earth terminal pre-plugged, between described electrode 4 and GIS shell 1, pick out one and detect impedance 5, this detects impedance 5 by connecting after a high-pass filtering and amplifier 6, by shaping circuit 7 connections one, can detect again the monitor 8 of GIS local discharge signal.
The utility model is on the disc insulator of GIS shell, to bury an electrode underground, at this electrode and shell, form electric capacity, with this capacitive transducer, extract the pulse signal of shelf depreciation, and amplify and detect to obtain local discharge signal in GIS by signal, its advantage is good in anti-interference performance, highly sensitive, can detect the shelf depreciation of 5 pC.
Claims (1)
1. a GIS local discharge on-line monitoring device, which comprises at least a GIS shell and the conducting rod on this GIS shell, and be provided with disc insulator on described GIS shell, it is characterized in that near earth terminal pre-plugged, having an electrode in described disc insulator, between described electrode and GIS shell, pick out one and detect impedance, this detects impedance by connecting after a high-pass filtering and amplifier, then by a shaping circuit connection one, can detect the monitor of GIS local discharge signal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320528053.1U CN203502546U (en) | 2013-08-28 | 2013-08-28 | GIS partial discharging on-line monitoring device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320528053.1U CN203502546U (en) | 2013-08-28 | 2013-08-28 | GIS partial discharging on-line monitoring device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203502546U true CN203502546U (en) | 2014-03-26 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320528053.1U Expired - Fee Related CN203502546U (en) | 2013-08-28 | 2013-08-28 | GIS partial discharging on-line monitoring device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203502546U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103472374A (en) * | 2013-08-28 | 2013-12-25 | 国网浙江省电力公司嘉兴供电公司 | Online GIS (gas insulated switchgear) partial discharge monitoring device |
| CN107356849A (en) * | 2017-08-25 | 2017-11-17 | 广州供电局有限公司 | Supporting insulator local discharge detection device and method in gas-insulated switch |
| CN107688139A (en) * | 2017-09-22 | 2018-02-13 | 福州大学 | GIS disc insulator creeping discharge monitoring methods based on Leakage Current |
-
2013
- 2013-08-28 CN CN201320528053.1U patent/CN203502546U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103472374A (en) * | 2013-08-28 | 2013-12-25 | 国网浙江省电力公司嘉兴供电公司 | Online GIS (gas insulated switchgear) partial discharge monitoring device |
| CN107356849A (en) * | 2017-08-25 | 2017-11-17 | 广州供电局有限公司 | Supporting insulator local discharge detection device and method in gas-insulated switch |
| CN107356849B (en) * | 2017-08-25 | 2023-12-05 | 广东电网有限责任公司广州供电局 | Partial discharge detection device and method for supporting insulator in gas insulated switch |
| CN107688139A (en) * | 2017-09-22 | 2018-02-13 | 福州大学 | GIS disc insulator creeping discharge monitoring methods based on Leakage Current |
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140326 Termination date: 20200828 |
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| CF01 | Termination of patent right due to non-payment of annual fee |