CN202383244U - Partial discharge detection device of gas insulated switchgear - Google Patents
Partial discharge detection device of gas insulated switchgear Download PDFInfo
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- CN202383244U CN202383244U CN2011205545548U CN201120554554U CN202383244U CN 202383244 U CN202383244 U CN 202383244U CN 2011205545548 U CN2011205545548 U CN 2011205545548U CN 201120554554 U CN201120554554 U CN 201120554554U CN 202383244 U CN202383244 U CN 202383244U
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Abstract
一种气体绝缘组合电器局部放电检测装置，包括特高频传感器、特高频同轴电缆、信号放大器、宽带调理单元、窄带调理单元、四通道采集单元、同步触发单元，特高频传感器通过特高频同轴电缆与信号放大器的信号输入端连接，信号放大器的信号输出端分别与宽带调理单元和窄带调理单元的信号输入端连接，宽带调理单元和窄带调理单元的信号输出端与四通道采集单元的信号输入端连接，四通道采集单元的信号输出端通过USB连接线与便携式计算机连接，四通道采集单元的其中一个采集通道与同步触发单元连接。本实用新型综合GIS局部放电特高频检测中窄带系统抗干扰性能好和宽带系统检测灵敏度高的优点，可对运行中GIS的局部放电进行检测，从而避免了GIS故障的发生。
A partial discharge detection device for a gas-insulated composite electrical appliance, comprising a UHF sensor, a UHF coaxial cable, a signal amplifier, a broadband conditioning unit, a narrowband conditioning unit, a four-channel acquisition unit, and a synchronous trigger unit. The high-frequency coaxial cable is connected to the signal input end of the signal amplifier, the signal output end of the signal amplifier is respectively connected to the signal input end of the broadband conditioning unit and the narrowband conditioning unit, and the signal output terminals of the broadband conditioning unit and the narrowband conditioning unit are connected to the four-channel acquisition The signal input end of the unit is connected, the signal output end of the four-channel acquisition unit is connected with the portable computer through a USB cable, and one of the acquisition channels of the four-channel acquisition unit is connected with the synchronous trigger unit. The utility model integrates the advantages of good anti-interference performance of the narrowband system and high detection sensitivity of the broadband system in GIS partial discharge ultra-high frequency detection, and can detect the partial discharge of the GIS in operation, thus avoiding the occurrence of GIS faults.
Description
Technical field
The utility model relates to a kind of local discharge of gas-insulator switchgear pick-up unit, specifically is the local discharge of gas-insulator switchgear pick-up unit of a kind of superfrequency arrowband and broadband combined measurement.
Background technology
Gas insulated combined electrical equipment (Gas Insulated Substation is called for short GIS) has the good insulation performance performance, is widely used in the high voltage power transmisson system.To the statistical results show of GIS physical fault,, the GIS insulating property occupy significant proportion because of reducing the fault that causes.Show as the shelf depreciation before puncturing the early stage of GIS insulation fault.The detection of shelf depreciation can be made description to insulation degradation trend and the operation conditions of GIS, provides to report to the police and fault diagnosis, avoids taking place major accident, saves a large amount of manpower and materials, guarantees system's security of operation.
The superfrequency electromagnetic wave signal of frequency range can be produced when among the GIS shelf depreciation taking place, detection can be realized shelf depreciation through detection to the superfrequency electromagnetic wave signal from hundreds of hertz to number G hertz.Extensively adopt single broadband or narrow band detection system during superfrequency detects at present; The interference of the fixed frequency in the working band can effectively found and reject to narrowband systems; Good in anti-interference performance; But frequency band is narrow, can miss the energy of very most of discharge signal, and sensitivity is not as good as broadband system under noiseless situation.Broadband system has the detection bandwidth, and signal energy is abundant, highly sensitive advantage, but be subject to disturbing effect, sensitivity is not as good as narrowband systems under noisy situation.
Summary of the invention
The utility model provides a kind of local discharge of gas-insulator switchgear pick-up unit; Can utilize the highly sensitive GIS local discharge detection device with narrow band detection good in anti-interference performance advantage of wide band detection simultaneously; Make the staff can in time understand the shelf depreciation situation of GIS more realistically; For the normal operation of GIS provides foundation, the generation of prevention GIS insulation fault.
A kind of local discharge of gas-insulator switchgear pick-up unit; Comprise superfrequency sensor, superfrequency concentric cable, signal amplifier, conditioning unit, broadband, conditioning unit, arrowband, four-way collecting unit, synchronous triggering unit; The superfrequency sensor is connected with the signal input part of signal amplifier through the superfrequency concentric cable; The signal output part of signal amplifier is connected with the signal input part of conditioning unit, broadband with conditioning unit, arrowband respectively; Conditioning unit, broadband is connected with the signal input part of four-way collecting unit with the signal output part of conditioning unit, arrowband; The signal output part of four-way collecting unit is connected with portable computer through the USB connecting line, and one of them acquisition channel of four-way collecting unit is connected with the synchronous triggering unit.
Aforesaid local discharge of gas-insulator switchgear pick-up unit, said superfrequency sensor adopts the external sensor that places GIS disc insulator place, or adopts the built-in sensor that places GIS inner.
The utility model combine the GIS partial-discharge ultrahigh-frequency detect in narrowband systems good in anti-interference performance and the high advantage of broadband system detection sensitivity, can the shelf depreciation of GIS in service be detected, thereby avoided the generation of GIS fault.
Description of drawings
Fig. 1 is the structural representation of the utility model local discharge of gas-insulator switchgear pick-up unit.
Among the figure: 1-superfrequency sensor, 2-superfrequency concentric cable, 3-signal amplifier, conditioning unit, 4-broadband, conditioning unit, 5-arrowband, 6-four-way collecting unit, 7-synchronous triggering unit, 8-USB connecting line, 9-portable computer.
Embodiment
To combine the accompanying drawing in the utility model below, the technical scheme in the utility model will be carried out clear, intactly description.
Shown in Figure 1 is the structural representation of the utility model local discharge of gas-insulator switchgear pick-up unit, and said local discharge of gas-insulator switchgear pick-up unit comprises superfrequency sensor 1, superfrequency concentric cable 2, signal amplifier 3, conditioning unit 4, broadband, conditioning unit 5, arrowband, four-way collecting unit 6, synchronous triggering unit 7, USB connecting line 8 and portable computer 9.Superfrequency sensor 1 is connected with the signal input part of signal amplifier 3 through superfrequency concentric cable 2; The signal output part of signal amplifier 3 is connected with the signal input part of conditioning unit 4, broadband with conditioning unit 5, arrowband respectively; Conditioning unit 4, broadband is connected with the signal input part of four-way collecting unit 6 with the signal output part of conditioning unit 5, arrowband, and the signal output part of four-way collecting unit 6 is connected with portable computer 9 through USB connecting line 8.One of them acquisition channel of four-way collecting unit 6 is connected with synchronous triggering unit 7; Be used to receive the synchronous triggering signal that synchronous triggering unit 7 produces, said synchronous triggering signal is used for providing when conditioning unit 4,6 pairs of broadbands of four-way collecting unit is gathered with the signal of arrowband conditioning unit 5 inputs synchronous triggering.
The bandwidth of superfrequency sensor 1 is 300MHz～1.5GHz; The enlargement factor of signal amplifier 3 is 40db; Conditioning unit 4, broadband can be nursed one's health the whole signals in 300MHz～1.5GHz frequency band, obtains its peak value, realizes wide band detection; Conditioning unit 5, arrowband can be nursed one's health the signal of any 100MHz bandwidth in 300MHz～1.5GHz frequency band, obtains its peak value, realizes narrow band detection; The sampling rate of four-way collecting unit 6 is 200MS/s, and bandwidth is 60MHz, and storage depth is 16M; Is produced from synchronous triggering unit 7 can nurse one's health into square-wave signal with power frequency synchronizing signal, for the collection of signal provides synchronous triggering.
The above; Be merely the embodiment of the utility model; But the protection domain of the utility model is not limited thereto; Any technician who belongs to the present technique field is in the technical scope that the utility model discloses, and the variation that can expect easily or replacement all should be encompassed within the protection domain of the utility model.Therefore, the protection domain of the utility model should be as the criterion with the protection domain of claim.
Claims (2)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205545548U CN202383244U (en) | 2011-12-23 | 2011-12-23 | Partial discharge detection device of gas insulated switchgear |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205545548U CN202383244U (en) | 2011-12-23 | 2011-12-23 | Partial discharge detection device of gas insulated switchgear |
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| Publication Number | Publication Date |
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| CN202383244U true CN202383244U (en) | 2012-08-15 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2011205545548U Expired - Fee Related CN202383244U (en) | 2011-12-23 | 2011-12-23 | Partial discharge detection device of gas insulated switchgear |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103048593A (en) * | 2012-12-12 | 2013-04-17 | 安徽省电力公司亳州供电公司 | Identification method of insulation defect type of gas-insulated switchgear |
| CN108957199A (en) * | 2018-08-30 | 2018-12-07 | 国家电网有限公司 | A kind of synchronous triggering device and triggering method for the acquisition of electro-magnetic transient data |
| CN109459674A (en) * | 2018-12-28 | 2019-03-12 | 国家电网有限公司 | A kind of partial discharge of switchgear multinode monitoring system synchronization device |
-
2011
- 2011-12-23 CN CN2011205545548U patent/CN202383244U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103048593A (en) * | 2012-12-12 | 2013-04-17 | 安徽省电力公司亳州供电公司 | Identification method of insulation defect type of gas-insulated switchgear |
| CN103048593B (en) * | 2012-12-12 | 2015-09-09 | 国家电网公司 | A kind of recognition methods of gas-insulated switchgear insulation defect kind |
| CN108957199A (en) * | 2018-08-30 | 2018-12-07 | 国家电网有限公司 | A kind of synchronous triggering device and triggering method for the acquisition of electro-magnetic transient data |
| CN109459674A (en) * | 2018-12-28 | 2019-03-12 | 国家电网有限公司 | A kind of partial discharge of switchgear multinode monitoring system synchronization device |
| CN109459674B (en) * | 2018-12-28 | 2020-12-22 | 国家电网有限公司 | A synchronization device for partial discharge multi-node monitoring system in switchgear |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: ELECTRIC POWER RESEARCH INSTITUTE, HUBEI ELECTRIC Free format text: FORMER OWNER: HUBEI ELECTRIC POWER COMPANY POWER TEST RESEARCH INSTITUTE Effective date: 20121031 Owner name: XI'AN JIAOTONG UNIVERSITY STATE ELECTRIC NET CROP. Free format text: FORMER OWNER: XI'AN JIAOTONG UNIVERSITY Effective date: 20121031 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20121031 Address after: 430077, 361 East Main Street, Wuchang District, Hubei, Wuhan Patentee after: Hubei Electric Power Research Institute of Power Company Patentee after: Xi'an Jiaotong University Patentee after: State Grid Corporation of China Address before: 430077 No. 227 East Main Street, Wuhan, Hubei, Wuchang Patentee before: Hubei Electric Power Testing & Research Institute, Hubei Electric Power Company Patentee before: Xi'an Jiaotong University |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120815 Termination date: 20181223 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |