CN203502546U - GIS partial discharging on-line monitoring device - Google Patents

GIS partial discharging on-line monitoring device Download PDF

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Publication number
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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CN
China
Prior art keywords
gis
line monitoring
shell
partial discharging
electrode
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
CN201320528053.1U
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Chinese (zh)
Inventor
钱伟杰
沈中元
金海�
唐昕
魏泽民
陈刚国
赵振敏
钟宏伟
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
State Grid Corp of China SGCC
Jiaxing Power Supply Co of State Grid Zhejiang Electric Power Co Ltd
Original Assignee
State Grid Corp of China SGCC
Jiaxing Power Supply Co of State Grid Zhejiang Electric Power Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by State Grid Corp of China SGCC, Jiaxing Power Supply Co of State Grid Zhejiang Electric Power Co Ltd filed Critical State Grid Corp of China SGCC
Priority to CN201320528053.1U priority Critical patent/CN203502546U/en
Application granted granted Critical
Publication of CN203502546U publication Critical patent/CN203502546U/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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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

A kind of GIS local discharge on-line monitoring device
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.
CN201320528053.1U 2013-08-28 2013-08-28 GIS partial discharging on-line monitoring device Expired - Fee Related CN203502546U (en)

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

ID=50333516

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 (2)

* Cited by examiner, † Cited by third party
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
CN107688139A (en) * 2017-09-22 2018-02-13 福州大学 GIS disc insulator creeping discharge monitoring methods based on Leakage Current

Cited By (2)

* Cited by examiner, † Cited by third party
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
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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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

CF01 Termination of patent right due to non-payment of annual fee