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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- 238000001514 detection method Methods 0.000 title abstract description 16
- 230000001360 synchronised effect Effects 0.000 claims abstract description 14
- 230000003750 conditioning effect Effects 0.000 claims description 27
- 239000012212 insulator Substances 0.000 claims description 14
- 230000035945 sensitivity Effects 0.000 abstract description 4
- 238000009413 insulation Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 2
- 230000015556 catabolic process Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 238000003745 diagnosis Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 238000005070 sampling Methods 0.000 description 1
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Abstract
A partial discharge detection device of a gas insulated switchgear (GIS) comprises an ultrahigh frequency sensor, an ultrahigh frequency coaxial cable, a signal amplifier, a broadband modulation unit, a narrow-band modulation unit, a four-channel acquisition unit and a synchronous trigger unit, wherein the ultrahigh frequency sensor is connected with a signal input end of the signal amplifier through the ultrahigh frequency coaxial cable, a signal output end of the signal amplifier is respectively connected with signal input ends of the broadband modulation unit and the narrow-band modulation unit, signal output ends of the broadband modulation unit and the narrow-band modulation unit are connected with a signal input end of the four-channel acquisition unit, a signal output end of the four-channel acquisition unit is connected with a portable computer through a universal serial bus (USB), and one acquisition channel of the four-channel acquisition unit is connected with the synchronous trigger unit. The partial discharge detection device integrates the advantages of the good anti-interference performance of a narrow-band system and the high detection sensitivity of a broadband system during partial discharge ultrahigh frequency detection of the GIS and can detect partial discharge of the running GIS, so that faults of the GIS are avoided.
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)
1. local discharge of gas-insulator switchgear pick-up unit; Comprise superfrequency sensor (1), superfrequency concentric cable (2), signal amplifier (3); Superfrequency sensor (1) is connected with the signal input part of signal amplifier (3) through superfrequency concentric cable (2), it is characterized in that: also comprise conditioning unit (4), broadband, conditioning unit (5), arrowband, four-way collecting unit (6), synchronous triggering unit (7); The signal output part of signal amplifier (3) is connected with the signal input part of conditioning unit, broadband (4) with conditioning unit, arrowband (5) respectively; Conditioning unit, broadband (4) is connected with the signal input part of four-way collecting unit (6) with the signal output part of conditioning unit, arrowband (5); The signal output part of four-way collecting unit (6) is connected with portable computer (9) through USB connecting line (8), and one of them acquisition channel of four-way collecting unit (6) is connected with synchronous triggering unit (7).
2. local discharge of gas-insulator switchgear pick-up unit as claimed in claim 1 is characterized in that: said superfrequency sensor (1) adopts the external sensor that places GIS disc insulator place, or adopts the built-in sensor that places GIS inner.
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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| CN (1) | CN202383244U (en) |
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 | Multi-node monitoring system synchronization device for local discharge of switch cabinet |
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120815 Termination date: 20181223 |