CN107091974A - A kind of electric branch path partially Discharge analysis system based on LabVIEW - Google Patents
A kind of electric branch path partially Discharge analysis system based on LabVIEW Download PDFInfo
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- CN107091974A CN107091974A CN201710136386.2A CN201710136386A CN107091974A CN 107091974 A CN107091974 A CN 107091974A CN 201710136386 A CN201710136386 A CN 201710136386A CN 107091974 A CN107091974 A CN 107091974A
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- discharge
- labview
- electric branch
- discharge signal
- branch path
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/12—Testing dielectric strength or breakdown voltage ; Testing or monitoring effectiveness or level of insulation, e.g. of a cable or of an apparatus, for example using partial discharge measurements; Electrostatic testing
- G01R31/1227—Testing dielectric strength or breakdown voltage ; Testing or monitoring effectiveness or level of insulation, e.g. of a cable or of an apparatus, for example using partial discharge measurements; Electrostatic testing of components, parts or materials
- G01R31/1263—Testing dielectric strength or breakdown voltage ; Testing or monitoring effectiveness or level of insulation, e.g. of a cable or of an apparatus, for example using partial discharge measurements; Electrostatic testing of components, parts or materials of solid or fluid materials, e.g. insulation films, bulk material; of semiconductors or LV electronic components or parts; of cable, line or wire insulation
- G01R31/1272—Testing dielectric strength or breakdown voltage ; Testing or monitoring effectiveness or level of insulation, e.g. of a cable or of an apparatus, for example using partial discharge measurements; Electrostatic testing of components, parts or materials of solid or fluid materials, e.g. insulation films, bulk material; of semiconductors or LV electronic components or parts; of cable, line or wire insulation of cable, line or wire insulation, e.g. using partial discharge measurements
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Testing Relating To Insulation (AREA)
Abstract
The invention discloses a kind of electric branch path partially Discharge analysis system based on LabVIEW, the system is made up of hardware components and software section.The hardware components of the system include power supply, server, Rogowski coil, data collecting card and oscillograph, and local discharge signal is measured, gather and shown.Software section is based on LabVIEW platform exploitation, the local discharge signal produced in the electric branch growth course for measuring and collecting is subjected to denoising and Threshold Analysis, show the Partial discharge signal waveform under time domain, by modular converter, show the Partial discharge signal waveform under frequency domain, then by extracting discharge phase and discharge frequency, Two-Dimensional Discharge spectrogram is constructed.The system is acquired and handled to local discharge signal using LabVIEW technologies and Rogowski coil, the shelf depreciation situation that the electric branch growth course to analyze in test sample is produced, and further judges to test the aging conditions of insulating materials.The system reliability is high, can accomplish monitoring in real time, practical.
Description
Technical field
The present invention relates to a kind of electric branch path partially Discharge analysis system based on LabVIEW, belong to high-voltage isulation neck
Domain.
Background technology
Current era, the supply of the live and work of people too busy to get away electric power, the operation of power system are once occur
The life that failure will give people is made troubles, and social economy causes damage.Power cable long-term work is in the big electricity of high voltage
Flow down, the bad environments for the operation that works in addition, its insulated part will be destroyed, and threaten the stable operation of power system.
During Operation of Electric Systems, the electrical treeing phenomenon in cable is the principal element for causing insulation fault, and electrical treeing mistake
Shelf depreciation is frequently accompanied by journey.So, the shelf depreciation for monitoring and analyzing in cable effectively in real time need not can cut
Cut-off electricity and the development degree that electric branch is conveniently and effectively judged under conditions of need not being damaged to power equipment, further
Ground may determine that the degree of aging of its insulation, predicts the service life of insulation, early warning is made with the failure to insulating materials,
Ensure the safe and stable operation of power system.
Utility model content
It is contemplated that being based in the deficiency solved in processing in the past and analysis local discharge signal method there is provided one kind
LabVIEW electric branch path partially Discharge analysis system, by gathering local discharge signal, with LabVIEW technologies to adopting
The information collected is handled and analyzed, and the aging performance of cable insulation is determined with this.
A kind of electric branch path partially Discharge analysis system based on LabVIEW is made up of hardware components and software section.
The hardware components of the system include power supply, server, device for detecting partial discharge signal, data collecting card and oscillograph, to electricity
The local discharge signal produced in branch growth course is measured, gathers and shown.Server used is single-chip microcomputer in system,
Device for detecting partial discharge signal application is Rogowski coil, and oscillograph is Tektronix DPO7054 digital phosphor oscillographys
Device.Software section in system is, based on LabVIEW platform exploitation, the local discharge signal for measuring and collecting to be gone
Make an uproar and Threshold Analysis, the local discharge signal waveform under display time domain, by modular converter, the shelf depreciation under display frequency domain is believed
Number waveform, then by extracting discharge phase and discharge frequency, constructs Two-Dimensional Discharge spectrogram.Construct used in Two-Dimensional Discharge spectrogram
Data point is the data point of extracted discharge phase discharge frequency, according to the frequency domain figure picture and Two-Dimensional Discharge of local discharge signal
The aging conditions of spectrum analysis insulating materials.The operation of software point following steps are realized：Gathered in real time using Rogowski coil
Local discharge signal is simultaneously come out with oscilloscope display, and waveform is preserved and imported into the program interface write, is shown original
Waveform, carries out showing time domain and frequency-domain waveform after wavelet filtering respectively, time domain and frequency domain ripple is shown respectively after carrying out Threshold Analysis
Shape, extracts the peak value and its corresponding frequency location of each impulse discharge attenuation oscillasion impulse, is transverse axis frequency as the longitudinal axis using phase
Construct Two-Dimensional Discharge spectrogram.
The beneficial effects of the invention are as follows：The invention provides a kind of electric branch path partially electric discharge point based on LabVIEW
Analysis system, the collection by Rogowski coil to local discharge signal, the utilization of data collecting plate card and singlechip technology, with reference to
The analysis and processing of LabVIEW softwares, have built a convenient effective, economical and practical local discharge signal analysis system,
Cable to be detected need not be kept apart from power network, and need not to insulation damage under conditions of analyze insulation material
The growing state of electric branch in material, and then judge the aging conditions of insulation.
Brief description of the drawings
Fig. 1 is the programming flowchart of the present invention.Fig. 2 is the control interface of invention software.Fig. 3 is the waveform of interface output.
Fig. 4 is the waveform of phase and frequency to be extracted.Fig. 5 is the Two-Dimensional Discharge spectrogram of construction.
Embodiment
Description and the embodiment electric branch path partially electric discharge point based on LabVIEW a kind of to the present invention
Analysis system is described further and illustrated.
A kind of electric branch path partially Discharge analysis system based on LabVIEW is by hardware components and software section two parts
Composition.Hardware components include power supply, server, device for detecting partial discharge signal, data collecting card and oscillograph, used
Server is single-chip microcomputer, and device for detecting partial discharge signal application is Rogowski coil, and oscillograph is Tektronix DPO7054
Digital fluorescence oscilloscope.Software section be based on LabVIEW platform exploitation, including wavelet filtering module, Threshold Analysis module,
Time and frequency zone modular converter and phase and frequency abstraction module.The workflow of said system is as shown in figure 1, according to actual measurement
The need for, system and the insulating materials of required test are connected, the electric branch in insulating materials is gathered by Rogowski coil
Local discharge signal produced by development, shows the waveform of shelf depreciation in real time on oscillograph.Control circle of the system
Face is as shown in Fig. 2, and the software section in the system is recorded at regular intervals preserves once original time domain waveform, time
Interval needs selected according to measurement.The wave file of described preservation is transferred in the software interface made, operation is clicked on
Button start to local discharge signal carry out wavelet filtering and Threshold Analysis processing, by time and frequency zone modular converter can with arrive
Frequency-domain waveform after processing, each waveform is as shown in Fig. 3.Frequency-domain waveform after the Threshold Analysis can extract phase and frequency
Analysis is further processed, Discharge pulse waveform is deployed to decay waveform as shown in Figure 4, the corresponding phase of electric discharge peak value is obtained
And frequency, then it is that longitudinal axis construction Two-Dimensional Discharge spectrogram is as shown in Figure 5 by transverse axis frequency of phase.According to the peak value of frequency-domain waveform
Scope may determine that the ageing level of insulating materials in the frequency set of respective frequencies or Two-Dimensional Discharge spectrogram.
Claims (5)
1. a kind of electric branch path partially Discharge analysis system based on LabVIEW, it is characterised in that：The system is by hardware components
With software section composition.
2. a kind of electric branch path partially Discharge analysis system based on LabVIEW according to claim 1, its feature exists
In：The hardware components of the system include power supply, server, device for detecting partial discharge signal, data collecting card and oscillograph, right
Local discharge signal is measured, gathers and shown.
3. a kind of electric branch path partially Discharge analysis system based on LabVIEW according to claim 1, its feature exists
In：Server used is single-chip microcomputer；Device for detecting partial discharge signal application is Rogowski coil；Oscillograph is Tektronix
DPO7054 digital fluorescence oscilloscopes.
4. a kind of electric branch path partially Discharge analysis system based on LabVIEW according to claim 1, its feature exists
In：Software section is the part that will be produced in the electric branch growth course for measuring and collecting based on LabVIEW platform exploitation
Discharge signal carries out the local discharge signal waveform under denoising and Threshold Analysis, display time domain, by modular converter, shows frequency domain
Under local discharge signal waveform, then by extracting discharge phase and discharge frequency, construct Two-Dimensional Discharge spectrogram.
5. a kind of electric branch path partially Discharge analysis system based on LabVIEW according to claim 1, its feature exists
In：Data point used in construction Two-Dimensional Discharge spectrogram is the data point of extracted discharge phase discharge frequency, is put according to local
The frequency domain figure picture and Two-Dimensional Discharge spectrum analysis of electric signal test the aging conditions of insulating materials.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610941233.0A CN106443388A (en) | 2016-10-26 | 2016-10-26 | Electric tree channel partial discharge analyzing system based on LabVIEW |
| CN2016109412330 | 2016-10-26 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107091974A true CN107091974A (en) | 2017-08-25 |
Family
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Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610941233.0A Pending CN106443388A (en) | 2016-10-26 | 2016-10-26 | Electric tree channel partial discharge analyzing system based on LabVIEW |
| CN201710136386.2A Pending CN107091974A (en) | 2016-10-26 | 2017-03-09 | A kind of electric branch path partially Discharge analysis system based on LabVIEW |
Family Applications Before (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610941233.0A Pending CN106443388A (en) | 2016-10-26 | 2016-10-26 | Electric tree channel partial discharge analyzing system based on LabVIEW |
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| CN (2) | CN106443388A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110632482A (en) * | 2019-11-03 | 2019-12-31 | 西南交通大学 | Evaluation method for insulation aging state of EPR cable based on Gaussian pyramid |
| CN110658429A (en) * | 2019-11-03 | 2020-01-07 | 西南交通大学 | Method for estimating length of electric branch in crosslinked polyethylene cable insulation of power distribution network |
| CN116937598A (en) * | 2023-09-14 | 2023-10-24 | 北京中联太信科技有限公司 | Insulation level monitoring adjusting system based on electric tree monitoring |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107329053B (en) * | 2017-05-26 | 2019-11-15 | 华南理工大学 | A method of suspended conductor induction discharge frequency is measured using high-speed camera |
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| CN1580797A (en) * | 2004-05-17 | 2005-02-16 | 西安交通大学 | Power cable local discharge on-line monitoring method and device |
| CN103616618A (en) * | 2013-09-18 | 2014-03-05 | 西安交通大学 | Partial discharge measuring device and method of electrical tree growth process in crosslinked polyethylene (XLPE) cable insulation |
| CN106054037A (en) * | 2016-06-13 | 2016-10-26 | 哈尔滨理工大学 | Electrical tree observation device with heating and partial discharge monitoring functions |
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2017
- 2017-03-09 CN CN201710136386.2A patent/CN107091974A/en active Pending
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| CN1580797A (en) * | 2004-05-17 | 2005-02-16 | 西安交通大学 | Power cable local discharge on-line monitoring method and device |
| CN103616618A (en) * | 2013-09-18 | 2014-03-05 | 西安交通大学 | Partial discharge measuring device and method of electrical tree growth process in crosslinked polyethylene (XLPE) cable insulation |
| CN106054037A (en) * | 2016-06-13 | 2016-10-26 | 哈尔滨理工大学 | Electrical tree observation device with heating and partial discharge monitoring functions |
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| 叶笛: "交联聚乙烯电缆电树枝引发特性及局部放电分析", 《中国优秀硕士学位论文全文数据库•工程科技II辑》 * |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110632482A (en) * | 2019-11-03 | 2019-12-31 | 西南交通大学 | Evaluation method for insulation aging state of EPR cable based on Gaussian pyramid |
| CN110658429A (en) * | 2019-11-03 | 2020-01-07 | 西南交通大学 | Method for estimating length of electric branch in crosslinked polyethylene cable insulation of power distribution network |
| CN110658429B (en) * | 2019-11-03 | 2021-03-23 | 西南交通大学 | Method for estimating length of electric branch in crosslinked polyethylene cable insulation of power distribution network |
| CN110632482B (en) * | 2019-11-03 | 2021-04-13 | 西南交通大学 | Evaluation method for insulation aging state of EPR cable based on Gaussian pyramid |
| CN116937598A (en) * | 2023-09-14 | 2023-10-24 | 北京中联太信科技有限公司 | Insulation level monitoring adjusting system based on electric tree monitoring |
| CN116937598B (en) * | 2023-09-14 | 2023-11-21 | 北京中联太信科技有限公司 | Insulation level monitoring adjusting system based on electric tree monitoring |
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| CN106443388A (en) | 2017-02-22 |
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Inventor after: Zhang Xiaohong Inventor after: Li Lin Inventor after: Shi Zexiang Inventor after: Cheng Cheng Inventor after: Zhang Shuang Inventor before: Zhang Xiaohong Inventor before: Li Lin Inventor before: Shi Zexiang Inventor before: Cheng Cheng |
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Application publication date: 20170825 |