CN106771932A - A kind of method of GIS partial discharge signal source and simulation shelf depreciation - Google Patents
A kind of method of GIS partial discharge signal source and simulation shelf depreciation Download PDFInfo
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- CN106771932A CN106771932A CN201710050203.5A CN201710050203A CN106771932A CN 106771932 A CN106771932 A CN 106771932A CN 201710050203 A CN201710050203 A CN 201710050203A CN 106771932 A CN106771932 A CN 106771932A
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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
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Abstract
The present invention relates to Cubicle Gas-Insulated Switchgear（GIS）Partial discharge monitoring field, and in particular to a kind of method of GIS partial discharge signal source and simulation shelf depreciation.The GIS partial discharge signal source, including oscillograph or harvester；Also include computer and Partial discharge signal source, communicated to connect between computer and Partial discharge signal source；Partial discharge signal source includes main control module and the memory module, pulse signal transmitter module, display module and the synchronization module that are connected with main control module；Synchronization module connects oscillograph or harvester.The signal source of traditional pulse current method is overcome because frequency range is too low, the problem for easily being filtered as interference by the wave filter of hyperfrequency, and the signal source of the class of signal generator one is only used for the research such as superfrequency shelf depreciation propagation characteristic and discharge capacity demarcation and cannot meet the problem for simulating different insulative defect local discharge signal source.Realize the extra-high detecting systems of GISs numerous to grid company whether normal work verification.
Description
Technical field
The invention belongs to Cubicle Gas-Insulated Switchgear（GIS）Partial discharge monitoring field, more particularly to it is a kind of
The method of GIS partial discharge signal source and simulation shelf depreciation.
Background technology
Cubicle Gas-Insulated Switchgear（GIS）The key component of electric power netting safe running, be on active service the cycle it is long,
Volume is big, weight is big and the characteristics of high price.But, superstructure loosening causes when burr, installation and transportation that GIS occurs when manufacturing
In loose contact, operation solid insulation ageing and it is various in the case of the various defects that are likely to occur, may all cause device interior
Electric field is distorted so that internal field strengthens so as to produce shelf depreciation（Partial Discharge, abbreviation PD）.It is local
" tumour " in electric discharge such as power equipment, if can not find in advance, can cause insulation ag(e)ing and ultimately result in the collapse of equipment
With the paralysis of power network, huge economic loss is caused, while producing tremendous influence to the living standard of the people.
Superfrequency detection method is a kind of effective ways for detecting GIS partial discharge failure, and the method is by detecting local putting
The 300MHz-3000MHz high frequency electromagnetic wave signals that electricity is produced realize the detection to partial discharge failure, with strong antijamming capability, spirit
Sensitivity advantage high and good reliability, therefore obtained extensive concern and the research of industry.
At present, most grid companies are equipped with a large amount of GIS partial discharge superfrequency detecting systems, but are using process
Middle discovery monitoring system is for a long time without any signal, it is impossible to judge its whether normal work, it is therefore desirable to one kind can be simulated very
Real GIS partial discharge signal source, come whether normal work is detected to superfrequency on-line monitoring system.Traditional pulse current
The signal source of method is too low due to frequency range, is easily filtered as interference by the wave filter of hyperfrequency, and the letter of the class of signal generator one
The research such as number source is then only used for superfrequency shelf depreciation propagation characteristic and discharge capacity is demarcated, it is impossible to meet simulation different insulative and lack
Fall into the simulation demand in local discharge signal source.
The content of the invention
The first object of the present invention is to provide one kind and can truly simulate different GIS Exemplary insulatives defect local discharge signals
Source, can according to for different GIS Exemplary insulatives defect local discharge signals arbitrarily adjust out of phase pulse position, quantity and
Amplitude.
The second object of the present invention is to provide a kind of method that shelf depreciation is simulated in utilization local discharge signal source, Neng Gouzhen
It is positive realize the extra-high detecting systems of GIS numerous to grid company whether normal work verification.
To realize above-mentioned first purpose, the technical solution adopted by the present invention is：A kind of GIS partial discharge signal source, bag
Include oscillograph or harvester；Also include computer and Partial discharge signal source, communicated to connect between computer and Partial discharge signal source；Office
Discharge signal source include main control module and be connected with main control module memory module, pulse signal transmitter module, display module and
Synchronization module；Synchronization module connects oscillograph or harvester.
In above-mentioned GIS partial discharge signal source, communicated by serial ports or network interface between computer and Partial discharge signal source；
Partial discharge signal source can work independently also can be with computer cooperating.
To realize above-mentioned second purpose, the technical solution adopted by the present invention is：One kind utilizes GIS partial discharge signal source
The method for simulating shelf depreciation, comprises the following steps：GIS Exemplary insulative defect local discharge signals are obtained first, extract signal
Envelope diagram, 360 deciles is carried out to envelope diagram and is stored in computer and memory module in one-dimension array form；Main control module is received
During the corresponding envelope signal of the GIS typical defect type selecting results and defect that are issued to computer, mould is launched to pulse signal
Block and synchronization module send work notice instruction, and export typical defect envelope signal simultaneously；Typical defect envelope signal is to arteries and veins
The pulse signal that signal emission module sends is rushed to be intercepted and exported the corresponding Partial discharge signal of defect；Synchronization module output simultaneously
Lock-out pulse is used for oscillograph or harvester synchronous acquisition；Lack when main control module receives the GIS typical cases that display module issues
When falling into type selecting result, defect type correspondence envelope signal is read from memory module；Then to pulse signal transmitter module and
Synchronization module sends work notice instruction, and exports typical defect envelope signal simultaneously；Typical defect envelope signal is believed pulse
The pulse signal that number transmitter module sends is intercepted and is exported the corresponding Partial discharge signal of defect；Synchronization module output simultaneously is synchronous
Pulse is used for oscillograph or harvester synchronous acquisition.
It is as follows the step of implement in the method for above-mentioned GIS partial discharge signal source simulation shelf depreciation：Obtain
Phase-electric discharge amplitude signal of the GIS typical discharges defect type in a power frequency period, enters to phase-electric discharge amplitude signal
The extraction of row envelope diagram, and store in computer or in memory module；When using local discharge signal source, first
Corresponding phase-electric discharge amplitude envelope the figure of defect type is chosen, selected phase-electric discharge amplitude envelope figure is sent out with pulse signal
Penetrate the phase-electric discharge amplitude of the pulse signal synthesis 20ms correspondence defect Partial discharge signals of module generation, so as to simulate with truly
The signal that the shelf depreciation that defect is produced is similar to.
In the method for above-mentioned GIS partial discharge signal source simulation shelf depreciation, phase-electric discharge amplitude envelope Figure 36 0
Decile simultaneously carries out the storage of one-dimension array；Phase-electric discharge amplitude envelope figure can both have been stored on computers, it is also possible to which storage exists
In memory module.
In the method for above-mentioned GIS partial discharge signal source simulation shelf depreciation, GIS typical defects type includes metal
Protrusion defect, free metal particle defects, insulator surface metal filth defect and insulator void defects；And according to scene
Demand can reduce defect type or increase other defect type；
In the method for above-mentioned GIS partial discharge signal source simulation shelf depreciation, pulse signal transmitter module output pulse letter
Number.
In the method for above-mentioned GIS partial discharge signal source simulation shelf depreciation, synchronization module exports synchronous arteries and veins all the way
Punching, i.e., when a power frequency period starts, send square wave for oscillograph or harvester synchronous acquisition.
In the method for above-mentioned GIS partial discharge signal source simulation shelf depreciation, computer selects different GIS typical cases to lack
Type selecting result and the corresponding envelope signal of defect are fallen into, display module selects different GIS typical defects type selecting results point
Do not send to main control module.
Beneficial effects of the present invention：The signal source of traditional pulse current method is overcome because frequency range is too low, easily by superelevation
The wave filter of frequency is as the problem that is filtered of interference, and the signal source of the class of signal generator one is only used for superfrequency and locally puts
The problem for simulating different insulative defect local discharge signal source, energy are studied and cannot met to electric transmission characteristic and discharge capacity demarcation etc.
The signal source of shelf depreciation under different GIS Exemplary insulatives defects is truly simulated in enough offers.
Brief description of the drawings
Fig. 1 is the schematic block circuit diagram of one embodiment of the invention；
Fig. 2 is the early-stage preparations flow chart of one embodiment of the invention；
Fig. 3 is the workflow diagram of one embodiment of the invention.
Specific embodiment
Embodiments of the present invention are described in detail below in conjunction with the accompanying drawings.
The example of the embodiment is shown in the drawings, wherein same or similar label represents identical or class from start to finish
As element or the element with same or like function.Below with reference to Description of Drawings embodiment be it is exemplary, only
For explaining the present invention, and it is not construed as limiting the claims.
Following disclosure provides many different embodiments or example is used for realizing different structure of the invention.For letter
Change disclosure of the invention, hereinafter the part and setting to specific examples are described.They are only merely illustrative, and purpose is not
It is to limit the present invention.Additionally, the present invention can in different examples repeat reference numerals and/or letter.This repetition be for
Simplify and clearly purpose, the relation between discussed various embodiments and/or setting itself is not indicated.Additionally, this hair
It is bright there is provided various specific techniques and the example of material, but those of ordinary skill in the art can be appreciated that other techniques
The use of applicability and/or other materials.In addition, fisrt feature described below second feature it " on " structure can be with
Be formed as the embodiment of directly contact including the first and second features, it is also possible to be formed in first and second including other feature
Embodiment between feature, such first and second feature may not be directly contact.
, it is necessary to explanation in description of the invention, unless otherwise prescribed and limit, term " connected " " connection " should do extensively
Reason and good sense solution, can be joined directly together for example, it may be mechanically connecting or electrical connection, or two connections of element internal,
Can also be indirectly connected to by intermediary, for those of ordinary skill in the related art, can managed as the case may be
Solve the concrete meaning of above-mentioned term.
The present embodiment uses following technical scheme：A kind of GIS partial discharge signal source, including oscillograph or harvester；
Also include computer and Partial discharge signal source, communicated to connect between computer and Partial discharge signal source；Partial discharge signal source includes master control mould
Block and the memory module being connected with main control module, pulse signal transmitter module, display module and synchronization module；Synchronization module
Connection oscillograph or harvester.
Further, communicated by serial ports or network interface between computer and Partial discharge signal source；Partial discharge signal source can be single
Solely work also can be with computer cooperating.
A kind of method that utilization GIS partial discharge signal source simulates shelf depreciation, comprises the following steps：GIS is obtained first
Exemplary insulative defect local discharge signal, extracts signal envelope figure, 360 deciles is carried out to envelope diagram and is deposited in one-dimension array form
It is stored in computer and memory module；Main control module receives the GIS typical defect type selecting results and defect that computer is issued
During corresponding envelope signal, send work notice to pulse signal transmitter module and synchronization module and instruct, and export typical case simultaneously
Defect envelope signal；The pulse signal that typical defect envelope signal pulse signals transmitter module sends is intercepted and is exported scarce
Fall into corresponding Partial discharge signal；The lock-out pulse of synchronization module output simultaneously is used for oscillograph or harvester synchronous acquisition；Work as master
When control module receives the GIS typical defect type selecting results that display module is issued, defect type correspondence is read from memory module
Envelope signal；Then send work notice to pulse signal transmitter module and synchronization module to instruct, and export typical defect simultaneously
Envelope signal；The pulse signal that typical defect envelope signal pulse signals transmitter module sends is intercepted and is exported defect pair
The Partial discharge signal answered；The lock-out pulse of synchronization module output simultaneously is used for oscillograph or harvester synchronous acquisition.
Further, the step of implementing is as follows：Obtain phase of the GIS typical discharges defect type in a power frequency period
Position-electric discharge amplitude signal, the extraction of envelope diagram is carried out to phase-electric discharge amplitude signal, and store in computer or store
In module；When using local discharge signal source, the corresponding phase-electric discharge amplitude envelope figure of defect type is chosen first,
Selected phase-electric discharge amplitude envelope figure defect office corresponding with the pulse signal synthesis 20ms that pulse signal transmitter module is produced
The phase of discharge signal-electric discharge amplitude, so as to the similar signal of the shelf depreciation for simulating with real defect is produced.
Further, phase-deciles of electric discharge amplitude envelope Figure 36 0 and the storage of one-dimension array is carried out；Phase-electric discharge amplitude bag
Network figure can both have been stored on computers, it is also possible to which storage is in a storage module.
Further, GIS typical defects type includes metallic projections defect, free metal particle defects, insulator surface
Metal filth defect and insulator void defects；And defect type or increase other defect class can be reduced according to the demand at scene
Type；
Further, pulse signal transmitter module output pulse signal.
Further, synchronization module exports lock-out pulse all the way, i.e., when a power frequency period starts, sending square wave is used for
Oscillograph or harvester synchronous acquisition.
Further, computer selects different GIS typical defects type selecting results and the corresponding envelope signal of defect, shows
Show that module selects different GIS typical defects type selecting results to be respectively sent to main control module.
During specific implementation, as shown in figure 1, a kind of GIS partial discharge signal source, mainly by computer and Partial discharge signal source two
Part constitutes, and is communicated using serial ports or network interface between computer and Partial discharge signal source, and Partial discharge signal source is by memory module, master control mould
Block, pulse signal transmitter module, display module and synchronization module are constituted；
And, Partial discharge signal source can work independently can also be with computer cooperating；
As shown in Fig. 2 and, the local discharge signal envelope of GIS Exemplary insulative defects is prestored in computer and memory module
Figure, and can be needed to be added envelope diagram, reduce and change according to scene, wherein envelope diagram carries out 360 deciles and with one
The form storage of dimension group；Pulse signal transmitter module output pulse signal；Synchronization module exports lock-out pulse all the way, i.e., one
Individual power frequency period at first, sends square wave, for oscillograph or harvester synchronous acquisition；
As shown in figure 3, computer and display module can select different GIS Exemplary insulatives defect types, and can be to master control mould
Block sends selection result；
When main control module receives the GIS typical defect type selecting results that computer issues and defect corresponding envelope signal, meeting
Work notice is sent to pulse signal transmitter module and synchronization module to instruct, and export typical defect envelope signal simultaneously；
When main control module receives the GIS typical defect type selecting results that display module is issued, can be read from memory module and lacked
The corresponding envelope signal of type is fallen into, then sending work notice to pulse signal transmitter module and synchronization module instructs, and simultaneously
Output typical defect envelope signal；
The operation principle of GIS partial discharge signal source：Firstly the need of the Exemplary insulative defect shelf depreciation letter for extracting GIS in advance
Number, and signal envelope figure is extracted, 360 deciles are carried out to envelope diagram and is stored in the form of one-dimension array in computer and storage mould
In block, when main control module receives the GIS typical defect type selecting results that computer issues and the corresponding envelope signal of defect,
Work notice can be sent to pulse signal transmitter module and synchronization module to instruct, and export typical defect envelope signal simultaneously；Allusion quotation
The pulse signal that type defect envelope signal pulse signals transmitter module sends is intercepted and is exported the corresponding partial discharge letter of defect
Number, while synchronization module output lock-out pulse is used for oscillograph or harvester synchronous acquisition；When main control module receives display
During the GIS typical defect type selecting results that module is issued, defect type correspondence envelope signal can be read from memory module, then
Work notice is sent to pulse signal transmitter module and synchronization module to instruct, and export typical defect envelope signal simultaneously；Typical case
Defect envelope signal is intercepted to the pulse signal sent by pulse signal transmitter module and is exported the corresponding partial discharge letter of defect
Number, while synchronization module output lock-out pulse is used for oscillograph or harvester synchronous acquisition.
The method that shelf depreciation is simulated using above-mentioned GIS partial discharge signal source, obtains GIS typical discharges defect classes first
" phase-electric discharge amplitude " signal of type in a power frequency period, carries out envelope diagram and carries to " phase-electric discharge amplitude " signal
Take, and store in computer or in the internal memory of memory module, when using Partial discharge signal source, defect class is chosen first
Corresponding " phase-electric discharge amplitude " envelope diagram of type, selected " phase-electric discharge amplitude " envelope diagram is produced with pulse signal emission source
" phase-electric discharge amplitude " signal of raw pulse signal synthesis 20ms correspondence defect Partial discharge signals, so as to simulate and truly lack
Fall into the similar signal of the shelf depreciation for producing.
Described GIS typical defects type includes metallic projections defect, free metal particle defects, insulator surface gold
The filthy defect of category and insulator void defects, but this four class is not limited to, the demand according to scene may reduce defect class
Type increases other defect type；
Described " phase-electric discharge amplitude " decile of envelope diagram 360 simultaneously carries out the storage of one-dimension array；
Described " phase-electric discharge amplitude " envelope diagram can both have been stored on computers, it is also possible to which storage is in the internal memory of chip；
Communication between described computer and partial discharge source device is serial ports or network interface；
Described Partial discharge signal source provides lock-out pulse all the way, i.e., in a power frequency period at first, send square wave, supplies
Oscillograph or harvester synchronous acquisition are used.
It should be appreciated that the part that this specification is not elaborated belongs to prior art.
Although the specific embodiment of the invention above in association with Description of Drawings, those of ordinary skill in the art should
Understand, these are merely illustrative of, and various deformation or modification can be made to these implementation methods, without departing from original of the invention
Reason and essence.The scope of the present invention is only limited by the claims that follow.
Claims (9)
1. a kind of GIS partial discharge signal source, including oscillograph or harvester；Characterized in that, also including computer drawn game
Discharge signal source, communicates to connect between computer and Partial discharge signal source；Partial discharge signal source includes main control module and and main control module
The memory module of connection, pulse signal transmitter module, display module and synchronization module；Synchronization module connects oscillograph or collection dress
Put.
2. GIS partial discharge signal source as claimed in claim 1, it is characterised in that lead between computer and Partial discharge signal source
Cross serial ports or network interface is communicated；Partial discharge signal source can work independently also can be with computer cooperating.
3. the method that the GIS partial discharge signal source described in a kind of utilization claim 1 simulates shelf depreciation, it is characterised in that
Comprise the following steps：GIS Exemplary insulative defect local discharge signals are obtained first, signal envelope figure is extracted, and envelope diagram is carried out
360 deciles are simultaneously stored in computer and memory module in one-dimension array form；Main control module receives the GIS allusion quotations that computer is issued
When type defect type selection result and the corresponding envelope signal of defect, work is sent to pulse signal transmitter module and synchronization module
Notification instruction, and typical defect envelope signal is exported simultaneously；Typical defect envelope signal pulse signals transmitter module sends
Pulse signal is intercepted and is exported the corresponding Partial discharge signal of defect；Simultaneously synchronization module output lock-out pulse be used for oscillograph or
Person's harvester synchronous acquisition；When main control module receives the GIS typical defect type selecting results that display module is issued, from depositing
Storage module reads defect type correspondence envelope signal；Then work notice is sent to pulse signal transmitter module and synchronization module to refer to
Order, and typical defect envelope signal is exported simultaneously；The pulse letter that typical defect envelope signal pulse signals transmitter module sends
Number intercepted and exported the corresponding Partial discharge signal of defect；The lock-out pulse of synchronization module output simultaneously is used for oscillograph or collection
Device synchronous acquisition.
4. the method that GIS partial discharge signal source as claimed in claim 3 simulates shelf depreciation, it is characterised in that specific real
Existing step is as follows：Phase-electric discharge amplitude signal of the GIS typical discharges defect type in a power frequency period is obtained, to phase
Position-electric discharge amplitude signal carries out the extraction of envelope diagram, and stores in computer or in memory module；Using shelf depreciation
When signal source, the corresponding phase-electric discharge amplitude envelope figure of defect type, selected phase-electric discharge amplitude are chosen first
Phase-electric discharge the width of envelope diagram defect Partial discharge signal corresponding with the pulse signal synthesis 20ms that pulse signal transmitter module is produced
Value, so as to the similar signal of the shelf depreciation for simulating with real defect is produced.
5. the method that GIS partial discharge signal source as claimed in claim 4 simulates shelf depreciation, it is characterised in that phase-put
The electric deciles of amplitude envelope Figure 36 0 simultaneously carry out the storage of one-dimension array；Phase-electric discharge amplitude envelope figure can be both stored in computer
On, it is also possible to storage is in a storage module.
6. the method that GIS partial discharge signal source as claimed in claim 3 simulates shelf depreciation, it is characterised in that GIS typical cases
Defect type includes metallic projections defect, free metal particle defects, insulator surface metal filth defect and insulator gas
Gap defect；And defect type or increase other defect type can be reduced according to the demand at scene.
7. the method that GIS partial discharge signal source as claimed in claim 3 simulates shelf depreciation, it is characterised in that pulse is believed
Number transmitter module output pulse signal.
8. the method that GIS partial discharge signal source as claimed in claim 3 simulates shelf depreciation, it is characterised in that
Synchronization module output lock-out pulse all the way, i.e., when a power frequency period starts, send square wave for oscillograph or
Harvester synchronous acquisition.
9. the method that GIS partial discharge signal source as claimed in claim 3 simulates shelf depreciation, it is characterised in that computer
Different GIS typical defects type selecting results and the corresponding envelope signal of defect, display module is selected to select different GIS typical cases to lack
Fall into type selecting result and be respectively sent to main control module.
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107192929A (en) * | 2017-06-21 | 2017-09-22 | 贵州电网有限责任公司电力科学研究院 | The GIS Partial discharge signals source system and application method verified for superfrequency monitoring system |
| CN110231548A (en) * | 2019-03-21 | 2019-09-13 | 国网辽宁省电力有限公司电力科学研究院 | A kind of GIS partial discharge feature extracting method based on ultrasonic signal envelope spectrum |
| CN110646719A (en) * | 2019-11-01 | 2020-01-03 | 云南电网有限责任公司电力科学研究院 | Air box for simulating partial discharge phenomenon in inflating cabinet |
| CN111060786A (en) * | 2019-12-16 | 2020-04-24 | 山东康威通信技术股份有限公司 | Partial discharge generating device and method with adjustable discharge quantity and density based on phase |
| CN111596188A (en) * | 2020-05-28 | 2020-08-28 | 南京华乘电气科技有限公司 | Signal generator simulation device and high-frequency current partial discharge signal simulation method |
| CN113094005A (en) * | 2019-12-23 | 2021-07-09 | 普源精电科技股份有限公司 | Method, system, computer device and medium for controlling synchronous output of signal source |
| CN113419152A (en) * | 2021-07-15 | 2021-09-21 | 贵州电网有限责任公司 | Acoustic-electric composite based fault insulator online detection device and detection method |
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| CN107192929A (en) * | 2017-06-21 | 2017-09-22 | 贵州电网有限责任公司电力科学研究院 | The GIS Partial discharge signals source system and application method verified for superfrequency monitoring system |
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| CN113094005A (en) * | 2019-12-23 | 2021-07-09 | 普源精电科技股份有限公司 | Method, system, computer device and medium for controlling synchronous output of signal source |
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| CN111596188A (en) * | 2020-05-28 | 2020-08-28 | 南京华乘电气科技有限公司 | Signal generator simulation device and high-frequency current partial discharge signal simulation method |
| CN113419152A (en) * | 2021-07-15 | 2021-09-21 | 贵州电网有限责任公司 | Acoustic-electric composite based fault insulator online detection device and detection method |
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