CN202383244U - Partial discharge detection device of gas insulated switchgear - Google Patents

Partial discharge detection device of gas insulated switchgear Download PDF

Info

Publication number
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
Authority
CN
China
Prior art keywords
unit
signal
gis
broadband
partial discharge
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
CN2011205545548U
Other languages
Chinese (zh)
Inventor
陈隽
李军浩
刘文浩
袁鹏
卢军
陈敏
胡泉伟
全江涛
李彦明
李劲彬
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
Original Assignee
Xian Jiaotong University
Electric Power Research Institute of State Grid Hubei 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 Xian Jiaotong University, Electric Power Research Institute of State Grid Hubei Electric Power Co Ltd filed Critical Xian Jiaotong University
Priority to CN2011205545548U priority Critical patent/CN202383244U/en
Application granted granted Critical
Publication of CN202383244U publication Critical patent/CN202383244U/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

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

The local discharge of gas-insulator switchgear pick-up unit
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.
Superfrequency sensor 1 process superfrequency concentric cable 2 is with the ultrahigh-frequency signal input signal amplifier 3 that collects; Imported conditioning unit 4, broadband and conditioning unit 5, arrowband respectively simultaneously through the ultrahigh-frequency signal after amplifying, got into four-way collecting unit 6 respectively through being connected with portable computer 9 through USB connecting line 8 after mould/number conversion through the two paths of signals after the conditioning.The sensor of superfrequency described in the present embodiment 1 can adopt the external sensor that places GIS disc insulator place, also can adopt the built-in sensor that places GIS inner.
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.
CN2011205545548U 2011-12-23 2011-12-23 Partial discharge detection device of gas insulated switchgear Expired - Fee Related CN202383244U (en)

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

Publications (1)

Publication Number Publication Date
CN202383244U true CN202383244U (en) 2012-08-15

Family

ID=46631737

Family Applications (1)

Application Number Title Priority Date Filing Date
CN2011205545548U Expired - Fee Related CN202383244U (en) 2011-12-23 2011-12-23 Partial discharge detection device of gas insulated switchgear

Country Status (1)

Country Link
CN (1) CN202383244U (en)

Cited By (3)

* Cited by examiner, † Cited by third party
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

Cited By (5)

* Cited by examiner, † Cited by third party
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

Similar Documents

Publication Publication Date Title
CN103197215B (en) GIS AC voltage withstand test discharge fault positioning system and method
CN202421420U (en) Ultrahigh frequency and pulse current based GIS (gas insulated switchgear) partial-discharge online monitoring device
CN104459493A (en) Switch cabinet partial discharge on-line monitoring system
CN103675666A (en) Live line measurement device and method for breaker in different periods of time
CN108919066A (en) A kind of partial discharge of switchgear detection system and detection method
CN203658526U (en) Live-line detection device used for partial discharging of distribution cable
CN202693740U (en) GIS (Geographic Information System) partial discharge online monitoring comprehensive processing unit
CN203133233U (en) A discharging fault positioning system in a GIS AC withstand voltage test
CN102981110A (en) Data measurement and storage system and method for achieving high frequency and ultra-high frequency partial discharge monitoring of transformer
CN202305736U (en) Partial discharge detection device of gas insulation combination electric appliance
CN202075376U (en) GIS (gas-insulated switchgear) partial discharge monitoring device
CN204495898U (en) A kind of transformer superpotential on-line monitoring system
CN204256114U (en) GIS partial discharge detects with wireless superfrequency sensor
CN202256581U (en) Partial discharge UHF signal envelope detection apparatus
CN202383244U (en) Partial discharge detection device of gas insulated switchgear
CN203037802U (en) Data measuring storage system achieving transformer high-frequency and ultrahigh-frequency partial discharge monitoring
CN204855722U (en) Insulating tubular busbar partial discharge detector system of 10kV
CN204666773U (en) A kind of Portable PD On-Line superfrequency and ultrasonic signal pick-up unit
CN202583397U (en) A partial discharge monitoring and positioning system of high-tension switch cabinet
CN104749520A (en) Measuring method and device of breaking time of circuit breaker
CN103983371A (en) Method for measuring operating temperature of transformer lead connector based on surface acoustic waves
CN102721854B (en) Power network overvoltage signal detection method and system
CN203606470U (en) Asynchronous time live-line measuring device for circuit breaker
CN104215887A (en) Portable partial discharge detector
CN102818990B (en) Method for evaluating quality of arc-fault circuit-interrupter

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