CN109917247A - A kind of GIS ultrahigh frequency local discharge on-line monitoring device and method using accumulative PRPD technology - Google Patents
A kind of GIS ultrahigh frequency local discharge on-line monitoring device and method using accumulative PRPD technology Download PDFInfo
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- CN109917247A CN109917247A CN201910244891.8A CN201910244891A CN109917247A CN 109917247 A CN109917247 A CN 109917247A CN 201910244891 A CN201910244891 A CN 201910244891A CN 109917247 A CN109917247 A CN 109917247A
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Abstract
The present invention relates to a kind of GIS ultrahigh frequency local discharge on-line monitoring devices using accumulative PRPD technology, including multiple live cabinets on site are arranged, each scene cabinet connects multiple data acquisition units, each data acquisition unit passes through the multiple UHF partial discharge sensors of UHF cable connection respectively, and the scene main fiber shows the data remote transmission of acquisition to GIS partial discharge on-line checking end.System solves the drawbacks of can not should record to intermittent signal, can not carry out signature analysis to intermittent signal, realizes the partial discharge monitoring that no data is omitted；System according to historgraphic data recording, the other operation informations of comprehensive primary equipment and environmental data can further analytical gap signal time of occurrence point or particular objective condition, be provided with force data guarantee for equipment condition monitoring.Additionally provide a kind of GIS ultrahigh frequency partial discharge monitoring method using PRPD technology.
Description
Technical field
The present invention relates to Partial Discharge Detecting Technology field, specifically a kind of GIS ultrahigh frequency using accumulative PRPD technology
Local discharge on-line monitoring device and method.
Background technique
GIS (gas insulated combined electrical equipment) is the important power equipment for guaranteeing power grid and operating normally, but because of GIS insulation performance
Failure caused by reduction occupies significant proportion.It is reported according to the international survey of 23.10 working group of CIGRE, was thrown before 1985
Insulation fault accounts in 247 failures of the GIS put into after insulation fault accounts for 60%, 1985 in 562 failures of the GIS entered
51%, the consequence of insulation breakdown can lead to large-area power-cuts and cause huge economic losses than more serious.
The shelf depreciation that electric fault is most commonly characterized in front of complete breakdown is shown to the statistics of the reliability of GIS.
In fact, due to manufacture, installation, transport and when testing, loosening, the poor contact of component cause electrode to float inside GIS, insulate
The defects of aging, various activities electrically conductive particles, all may cause different degrees of shelf depreciation.The long-term shelf depreciation of equipment makes
It obtains insulation degradation and expands, final insulation breakdown and edge flashing are caused, so as to cause the power failure of system.Major tune-up is not only
Heavy workload, costly, loss of outage is big, and exist and fail to report, morning newspaper, wrong report the problems such as.GIS partial discharge is thus carried out to exist
Line detection has great importance.
When system monitoring is to Partial discharge signal, generally pass through PRRS (Phase Resolve Pluse Sequence) map
And PRPD (Phase Resolve Partial Discharge) map format display data, current demand signal record is general to be used
Timing acquiring simultaneously records, i.e., in long-time monitoring, can only record the data saved in fairly small a period of time, causes current
Monitoring system mainly has the disadvantage that
1, intermittent signal data record: GIS Partial discharge signal is much intermittent Partial discharge signal, in fact it could happen that frequency is very
Low, such signal cannot be recorded in Timing Data Acquisition.
2, intermittent signal signature analysis: currently existing technology can not carry out feature to intermittent signal by historical data
Analysis.
Summary of the invention
Technical problem to be solved by the invention is to provide a kind of GIS ultrahigh frequency shelf depreciations using accumulative PRPD technology
On-Line Monitor Device, to solve defect existing in the prior art.
The technical scheme to solve the above technical problems is that
A kind of GIS ultrahigh frequency local discharge on-line monitoring device using accumulative PRPD technology, including being arranged on site
Multiple scene cabinets, each scene cabinet connect multiple data acquisition units, and each data acquisition unit passes through UHF cable connection respectively
Multiple UHF partial discharge sensors, data acquisition unit are connect by series system with live cabinet, and live cabinet passes through live main fiber will
The data remote transmission of acquisition is shown that GIS partial discharge on-line checking end can to GIS partial discharge on-line checking end
Multiple live cabinets are connected, the signal of the data acquisition unit built-in controller, the controller acquisition UHF partial discharge sensor is big
The number of small, acquisition time and UHF partial discharge sensor is then transmit to GIS partial discharge on-line checking end, the part GIS
On-line Discharge Detection end built-in main controller, for receiving data and by acquired data storage to data storage device；
The present invention also provides a kind of GIS ultrahigh frequency partial discharge monitoring method using accumulative PRPD technology, packets
Include following steps:
1) after the starting of system, each data acquisition unit is by controller control, when to the work of UHF partial discharge sensor
Between signal waveform includes signal amplitude in section and phase property carries out continuous acquisition and records, while recording acquisition time and each
The number of UHF partial discharge sensor；
2) data acquisition unit sends the signal to live cabinet；
3) data record is backed up and data is transmitted to GIS partial discharge by live main fiber in real time and existed by the scene cabinet
Line test side；
4) .GIS shelf depreciation on-line checking end stores the signal data of all acquisitions into data storage device, while real
When the signal of acquisition is analyzed and processed, once find the problem at once by alarm node export alarm signal；
Further, GIS partial discharge on-line checking end connects user interface, and user can pass through the user interface
Historical data reading, PT signal input setting, network data transmission operation are carried out to GIS partial discharge on-line checking end；
The beneficial effects of the present invention are: system uses real-time data acquisition, and record all signals in monitoring time section
The associated arguments such as phase, amplitude, signal include duration signal and intermittent signal；System solves and can not cope with intermittence
The drawbacks of signal records, can not carry out signature analysis to intermittent signal, realizes the partial discharge monitoring that no data is omitted；
For system according to historgraphic data recording, the other operation informations of comprehensive primary equipment and environmental data can further analytical gap signals
Time of occurrence point or particular objective condition are provided with force data guarantee for equipment condition monitoring.
Detailed description of the invention
Fig. 1 is schematic structural view of the invention；
The reference numerals are as follows:
1, UHF partial discharge sensor, 2, data acquisition unit, 3, cable, 4, live main fiber, 5, alarm node, 6, user
Interface, 7, live cabinet, 8, GIS partial discharge on-line checking end；
Specific embodiment
The principle and features of the present invention will be described below with reference to the accompanying drawings, and the given examples are served only to explain the present invention, and
It is non-to be used to limit the scope of the invention.
As shown in Figure 1, a kind of GIS ultrahigh frequency local discharge on-line monitoring device using accumulative PRPD technology, including set
Multiple live cabinets at scene are placed in, each scene cabinet connects multiple data acquisition units, and each data acquisition unit passes through respectively
The multiple UHF partial discharge sensors of UHF cable connection, data acquisition unit are connect by series system with live cabinet, and live cabinet passes through
Live main fiber shows the data remote transmission of acquisition to GIS partial discharge on-line checking end, the GIS partial discharge
On-line checking end can connect multiple live cabinets, the data acquisition unit built-in controller, and the controller acquisition UHF partial discharge passes
Signal magnitude, the number of acquisition time and UHF partial discharge sensor of sensor, are then transmit to GIS partial discharge on-line checking end,
GIS partial discharge on-line checking end built-in main controller, for receiving data and by acquired data storage to data storage
Device；
Shelf depreciation has high frequency characteristics in GIS, because the effect of GIS gas chamber, and then form the superfrequency of various modes
Resonant electromagnetic wave, high-frequency discharge signal penetrability can be by the uhf sensor that is mounted on GIS on disc insulator
These signals can be received.
Also provide a kind of GIS ultrahigh frequency partial discharge monitoring method using accumulative PRPD technology comprising as follows
Step:
1) after the starting of system, each data acquisition unit is by controller control, when to the work of UHF partial discharge sensor
Between signal waveform includes signal amplitude in section and phase property carries out continuous acquisition and records, while recording acquisition time and each
The number of UHF partial discharge sensor；
2) data acquisition unit sends the signal to live cabinet；
3) data record is backed up and data is transmitted to GIS partial discharge by live main fiber in real time and existed by the scene cabinet
Line test side；
4) .GIS shelf depreciation on-line checking end stores the signal data of all acquisitions into data storage device, while real
When the signal of acquisition is analyzed and processed, once find the problem at once by alarm node export alarm signal；
Further, GIS partial discharge on-line checking end connects user interface, and user can be connect by the user
Mouth carries out historical data reading, PT signal input setting, network data transmission operation to GIS partial discharge on-line checking end；
To sum up, the main improvement of the present invention is: each sensor being acquired signal number in data acquisition unit device
It records, and will be obtained so signal amplitude and phase characteristic data are recorded in monitoring time according to characteristic.It can lead to simultaneously
User interface is crossed to carry out the historical data of the arbitrary period in the data storage device for being stored in GIS partial discharge on-line checking end
It reads, is analyzed and processed in order to subsequent.
This technology has the advantages that
1, historical signal data records: GIS Partial discharge signal can be generally divided into persistent signal and intermittent signal, this system
All signal characteristics in monitoring time can be collected and recorded.
2, signature analysis: the historical data that any time period may be selected in system carries out signature analysis.
The foregoing is merely presently preferred embodiments of the present invention, is not intended to limit the invention, it is all in spirit of the invention and
Within principle, any modification, equivalent replacement, improvement and so on be should all be included in the protection scope of the present invention.
Claims (3)
1. a kind of GIS ultrahigh frequency local discharge on-line monitoring device using accumulative PRPD technology, it is characterised in that: including setting
Multiple live cabinets on site, each scene cabinet connect multiple data acquisition units, and each data acquisition unit passes through UHF respectively
The multiple UHF partial discharge sensors of cable connection, data acquisition unit are connect by series system with live cabinet, and live cabinet passes through scene
The data remote transmission of acquisition is shown that the GIS partial discharge is online to GIS partial discharge on-line checking end by main fiber
Test side can connect multiple live cabinets, the data acquisition unit built-in controller, and the controller acquires UHF partial discharge sensor
Signal magnitude, the number of acquisition time and UHF partial discharge sensor, be then transmit to GIS partial discharge on-line checking end, it is described
GIS partial discharge on-line checking end built-in main controller, for receiving data and by acquired data storage to data storage device.
2. a kind of GIS ultrahigh frequency partial discharge monitoring method using accumulative PRPD technology, which is characterized in that including as follows
Step: 1) after the starting of system, each data acquisition unit is controlled by controller, to the working time section of UHF partial discharge sensor
Interior signal waveform includes signal amplitude and phase property carries out continuous acquisition and records, while recording acquisition time and each UHF
The number of partial discharge sensor；2) data acquisition unit sends the signal to live cabinet；3) scene cabinet backs up data record simultaneously
Data are transmitted to GIS partial discharge on-line checking end by live main fiber in real time；4) .GIS shelf depreciation on-line checking end
The signal data of all acquisitions is stored into data storage device, while the signal of acquisition is analyzed and processed in real time, once
It finds the problem and alarm signal is exported by alarm node at once.
3. a kind of GIS ultrahigh frequency partial discharge monitoring method using accumulative PRPD technology according to claim 2,
It is characterized by: GIS partial discharge on-line checking end connects user interface, user can be by the user interface to GIS
Shelf depreciation on-line checking end carries out historical data reading, PT signal input setting, network data transmission operation.
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Cited By (1)
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Application publication date: 20190621 |