CN107505552B - Steep-front impacts lower shelf depreciation high-frequency signal extraction element and measuring system - Google Patents
Steep-front impacts lower shelf depreciation high-frequency signal extraction element and measuring system Download PDFInfo
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- CN107505552B CN107505552B CN201710960090.2A CN201710960090A CN107505552B CN 107505552 B CN107505552 B CN 107505552B CN 201710960090 A CN201710960090 A CN 201710960090A CN 107505552 B CN107505552 B CN 107505552B
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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
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- G—PHYSICS
- G08—SIGNALLING
- G08C—TRANSMISSION SYSTEMS FOR MEASURED VALUES, CONTROL OR SIMILAR SIGNALS
- G08C23/00—Non-electrical signal transmission systems, e.g. optical systems
- G08C23/06—Non-electrical signal transmission systems, e.g. optical systems through light guides, e.g. optical fibres
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Abstract
This application provides a kind of steep-fronts to impact lower shelf depreciation high-frequency signal extraction element, wherein cavity one end is provided with cavity bottom surface, and cavity is provided with intercommunicating pore on bottom surface；Cavity bottom surface is provided with high-frequency signal receiving part in the side for being located at containment portion；The side that high-frequency signal receiving part is located at cavity bottom surface is provided with connecting rod, and connecting rod one end within the cavity is provided with connecting column, and the periphery of connecting rod is provided with insulating sleeve；The cavity other end is provided with cavity cover board, and connecting hole is provided on cavity cover board, and cavity cover board is provided with electrical connector in connection hole, and electrical connector is connect with connecting column by banana connector.Cavity is placed in the reserved window of GIS pipeline, under carrying out steep-front and impacting when GIS partial discharge detection, high-frequency signal receiving part receives initial measurement signal, and electrical connector is sent to by connecting rod, connecting column and banana connector, to realize the extraction for impacting lower shelf depreciation high-frequency signal to steep-front.
Description
Technical field
Lower shelf depreciation high-frequency signal is impacted this application involves power electronics field more particularly to a kind of steep-front to mention
Take device and measuring system.
Background technique
All the time, those skilled in the art are in the field of business builds consensus: in extra-high voltage field, for detection device defect,
Impulse withstand voltage test would generally be carried out in device context commissioning test, and in super-pressure field, usually only carry out industrial frequency withstand voltage
Test.However, with the Large scale construction of supergrid in recent years and putting into operation, equipment occurs before putting into operation and in operation
The probability of accident is continuously increased, this explanation only carries out the safety that industrial frequency withstand voltage test is no longer satisfied equipment to extra-high tension unit
Demand.Also, for extra-high tension unit, such as gas-insulated switchgear (Gas Insulated Switchgear, abbreviation
GIS device), although the power-frequency voltage that industrial frequency withstand voltage test uses can excite and exposure device defect, due to power frequency electric
Pressing element has duration, can also make equipment deficiency further expansion while excitation and exposure device defect, cause more to equipment
Big damage.
For extra-high tension units such as GIS devices, the characteristics of surge voltage is due to its " transient ", is being excited and exposure defect
While, defect will not be expanded, also, for the GIS device with fixed insulation defect, the wave head time of surge voltage is determined
The breakdown characteristics of GIS, the wave head time is shorter, it is found that the effect of defect is better instead.Therefore, using steep-front surge voltage pair
GIS device, which carries out steep-front, which impacts lower measurement of partial discharge, can effectively find the local defect in GIS device.
In the prior art, mostly use alternating voltage or DC voltage as excitation the measurement of partial discharge of GIS device
Voltage mostly uses excusing from death wave method, hyperfrequency method and pulse current method in measurement means, and impacts lower part for steep-front and put
Electro-detection does not have duration since its wave head time is short, and above-mentioned measurement method has significant limitation, therefore, existing skill
Measurement means in art cannot achieve to GIS device steep-front impact under measurement of partial discharge.
Summary of the invention
This application provides a kind of steep-fronts to impact lower shelf depreciation high-frequency signal extraction element and measuring system, to solve
Problems of the prior art.
This application provides a kind of steep-fronts to impact lower shelf depreciation high-frequency signal extraction element, comprising: cavity；Wherein:
Described cavity one end is provided with cavity bottom surface, is provided with intercommunicating pore on the cavity bottom surface；The cavity bottom surface exists
The side of the containment portion is provided with high-frequency signal receiving part, the high-frequency signal receiving part and the cavity bottom
The first insulating layer is provided between face.
The side that the high-frequency signal receiving part is located at the cavity bottom surface is provided with connecting rod, and the connecting rod is located at
In the intercommunicating pore, the connecting rod is located in the cavity far from one end of the high-frequency signal receiving part, the connection
The diameter of bar is less than the connection bore dia；The connecting rod is located at the intracorporal one end of the chamber and is provided with connecting column, the company
The diameter for connecing column is greater than the diameter of the connecting rod；The periphery of the connecting rod is provided with insulating sleeve, and the insulating sleeve exists
The intracorporal diameter of chamber is greater than the diameter of the intercommunicating pore.
The cavity other end is provided with cavity cover board, is provided with the second insulation between the cavity cover board and the cavity
Layer, it is provided with connecting hole on the cavity cover board, the cavity cover board is provided with electrical connector, the electricity in the connection hole
Banana connector is provided between connector and the connecting column, the electrical connector and the connecting column pass through the banana connector
Connection.
Optionally, the cavity is located at cavity cover board side and is provided with abutted flange, the docking of the abutted flange
Seal groove is provided on face.
Optionally, the high-frequency signal receiving part is disc structure made of metal.
Optionally, the connecting rod is threaded rod, and the connecting column is provided with tapped blind hole, the connecting rod and the company
Column is connect to be threadedly coupled by the tapped blind hole.
Optionally, the cavity and the cavity cover board are made using stainless steel.
Optionally, airtight and watertight padding is filled in the seal groove.
The application also provides a kind of lower shelf depreciation high frequency testing system of steep-front impact, comprising: extraction element, letter
Number processing module, signal transmission module and display terminal；Wherein:
The signal processing module is connect with the electrical connector of the extraction element, and the signal processing module is used for
High frequency filter is carried out to the initial measurement signal that the extraction element extracts, exports high-frequency signal measurement.
Described signal transmission module one end is connect with the signal processing module, and the other end is connect with the display terminal；
The transmission process module is used to high-frequency signal measurement being transmitted to the display terminal.
Optionally, the signal processing module includes high-frequency filter circuit, and the high-frequency filter circuit is initial for removing
Low-frequency noise in measuring signal exports high-frequency signal measurement.
Optionally, the signal transmission module includes analog-digital converter, and the analog-digital converter is for believing high frequency measurement
Number it is converted into the digital signal that the display terminal can identify.
Optionally, the signal transmission module further includes electric light converter, photoelectric converter and optical cable；The electro-optic conversion
Device is located at the analog-digital converter side, connect with the analog-digital converter, and the photoelectric converter is located at the display terminal
Side is connect with the display terminal, and the electric light converter is connect with the photoelectric converter by the optical cable.
From the above technical scheme, lower shelf depreciation high-frequency signal is impacted this application provides a kind of steep-front extract dress
It sets, comprising: cavity；Cavity one end is provided with cavity bottom surface, and cavity is provided with intercommunicating pore on bottom surface；Cavity bottom surface is being located at cavity
External side is provided with high-frequency signal receiving part, and the first insulation is provided between high-frequency signal receiving part and cavity bottom surface
Layer；The side that high-frequency signal receiving part is located at cavity bottom surface is provided with connecting rod, and connecting rod is located in intercommunicating pore, and connecting rod is remote
One end from high-frequency signal receiving part is within the cavity, and the diameter of connecting rod is less than connection bore dia；Connecting rod is located at cavity
Interior one end is provided with connecting column, and the diameter of connecting column is greater than the diameter of connecting rod；The periphery of connecting rod is provided with insulating sleeve,
The diameter of insulating sleeve in the cavity is greater than the diameter of connecting column, is dielectrically separated from cavity bottom surface with connecting rod and connecting column；Chamber
The body other end is provided with cavity cover board, and connecting hole is provided on cavity cover board, and cavity cover board is provided with electrical connection in connection hole
Head, is provided with banana connector between electrical connector and connecting column, electrical connector is connect with connecting column by banana connector.It uses
When, cavity is placed in the reserved window of GIS pipeline, is located at high-frequency signal receiving part in GIS pipeline, before carrying out suddenly
Along when impacting lower GIS partial discharge detection, high-frequency signal receiving part receives GIS device under steep-front surge voltage and locally puts
The initial measurement signal of electricity, initial measurement signal are sent to electricity by connecting rod, connecting column and the banana connector to insulate with cavity
Connector, to realize the extraction for impacting lower shelf depreciation high-frequency signal to steep-front.In addition, the application also provides one kind
Steep-front impacts lower shelf depreciation high frequency testing system, including extraction element provided by the present application, signal processing module, letter
Number transmission module and display terminal；Signal processing module and the electrical connector of measuring device connect, for receiving from extraction element
Initial measurement signal, and High frequency filter is carried out to initial measurement signal, export high-frequency signal measurement；Signal transmission module one end with
Signal processing module connection, the other end are connect with display terminal；Signal processing module is aobvious for high-frequency signal measurement to be transmitted to
Show that terminal, measuring system provided by the present application extract initial measurement signal by measuring device, by signal processing module to first
Beginning measuring signal is filtered, and removes low-frequency noise, obtains the high-frequency signal measurement that steep-front impacts lower shelf depreciation, finally,
It is sent to display terminal by signal transmission module, so that GIS device steep-front is impacted lower shelf depreciation high-frequency signal whole in display
Quantify display on end, to realize the measurement for impacting lower shelf depreciation high-frequency signal to steep-front.
Detailed description of the invention
In order to illustrate more clearly of the technical solution of the application, letter will be made to attached drawing needed in the embodiment below
Singly introduce, it should be apparent that, for those of ordinary skills, without any creative labor,
It is also possible to obtain other drawings based on these drawings.
Fig. 1 is the structural representation that the steep-front shown in the embodiment of the present application impacts lower shelf depreciation high-frequency signal extraction element
Figure；
Fig. 2 is the structure that a kind of steep-front shown in the embodiment of the present application impacts lower shelf depreciation high frequency testing system
Schematic diagram；
Fig. 3 is the knot that another steep-front shown in the embodiment of the present application impacts lower shelf depreciation high frequency testing system
Structure schematic diagram；
Wherein: 1- cavity, 11- cavity bottom surface, 12- intercommunicating pore, 2- high-frequency signal receiving part, the first insulating layer of 31-,
32- insulating sleeve, 33- second insulating layer, 4- connecting rod, 5- connecting column, 51- tapped blind hole, 6- cavity cover board, 61- connecting hole,
7- electrical connector, 8- banana connector, 9- abutted flange, 91- seal groove, 911- airtight and watertight padding, 10- extraction element, at 20- signal
Manage module, 201- high-frequency filter circuit, 30- signal transmission module, 301- analog-digital converter, 302- electric light converter, 303- light
Electric transducer, 304- optical cable, 40- display terminal module, 100-GIS pipeline, 110-GIS equipment, 120- reserved window.
Specific embodiment
In order to make those skilled in the art better understand the technical solutions in the application, below in conjunction with the application reality
The attached drawing in example is applied, the technical scheme in the embodiment of the application is clearly and completely described, it is clear that described implementation
Example is merely a part but not all of the embodiments of the present application.Based on the embodiment in the application, this field is common
The application protection all should belong in technical staff's every other embodiment obtained without making creative work
Range.
Embodiment one
The embodiment of the present application provides a kind of lower shelf depreciation high-frequency signal extraction element of steep-front impact, as shown in Figure 1, this
Apply for that the steep-front that embodiment provides impacts lower shelf depreciation high-frequency signal extraction element, comprising:
Cavity 1；1 one end of cavity is provided with cavity bottom surface 11, and intercommunicating pore 12 is provided on cavity bottom surface 11；Cavity bottom surface 11
The side being located at outside cavity 1 is provided with high-frequency signal receiving part 2, high-frequency signal receiving part 2 and cavity bottom surface 11 it
Between be provided with the first insulating layer 31；The side that high-frequency signal receiving part 2 is located at cavity bottom surface 11 is provided with connecting rod 4, connection
Bar 4 is located in intercommunicating pore 12, and connecting rod 4 is located in cavity 1 far from one end of high-frequency signal receiving part 2, the diameter of connecting rod 4
Less than 12 diameter of intercommunicating pore；One end that connecting rod 4 is located in cavity 1 is provided with connecting column 5, and the diameter of connecting column 5 is greater than connection
The diameter of bar 4；The periphery of connecting rod 4 is provided with insulating sleeve 32, and diameter of the insulating sleeve 32 in cavity 1 is greater than connecting column 5
Diameter, insulating sleeve 32 is dielectrically separated from cavity bottom surface 11 with connecting rod 4 and connecting column 5；1 other end of cavity is provided with cavity
Cover board 6 is provided with second insulating layer 33, connecting hole 61, cavity cover is provided on cavity cover board 6 between cavity cover board 6 and cavity 1
Plate 6 is provided with electrical connector 7 at connecting hole 61, and banana connector 8, electrical connector are provided between electrical connector 7 and connecting column 5
7 are connect with connecting column 5 by banana connector 8.
In the present embodiment, cavity 1 is mounted in the reserved window 120 of GIS pipeline 100, and the bore of reserved window 120 is bigger
In the outer diameter of cavity 1, so that cavity 1 is easily placed and takes out.Cavity 1 is mounted in reserved window 120 and after fixing, and allows chamber
There are gaps between body 1 and reserved window 120, and to cope with equipment deformation caused by by environmental factor, but gap can not be excessive, mistake
Big gap is unfavorable for the fixation of cavity 1.In the present embodiment, after cavity 1 is installed, high-frequency signal receiving part 2 is located at GIS pipeline
Close to the position of tube wall in 100, to not impacted to the overall structure of GIS pipeline 100.First insulating layer 31 and insulation sleeve
Cylinder 32 contacts with each other, and cavity 1 and high-frequency signal receiving part 2, connecting rod 4 and connecting column 5 is made to form reliable insulation, also,
Second insulating layer 33 realizes the insulation to connecting column 5 and cavity cover board 6, therefore, the survey that high-frequency signal receiving part 2 receives
Measuring signal can only transmit along connecting rod 4 and connecting column 5, and is transferred on the electrical connector 7 outside cavity by banana connector 8,
It is not transmitted on cavity 1 and signal is caused to be dispersed, to be conducive to improve the effect of signal extraction.When progress steep-front punching
When hitting the detection of lower GIS partial discharge, high-frequency signal receiving part 2 receives 110 part of GIS device under steep-front surge voltage and puts
The initial measurement signal of electricity, initial measurement signal are sent to by connecting rod 4, connecting column 5 and the banana connector 8 to insulate with cavity
Electrical connector 7, to realize the extraction for impacting lower shelf depreciation high-frequency signal to steep-front.
In the present embodiment, the diameter of connecting rod 4 is less than the diameter of intercommunicating pore 12, and the internal diameter of insulating sleeve 32 is equal to connecting rod
4 diameter, the outer diameter of insulating sleeve 32 are equal to the diameter of intercommunicating pore 12, make 11 shape of connecting rod 4, insulating sleeve 32 and cavity bottom surface
At reliable fixed.It should be noted that it is insulation that the relationship between the diameter of connecting rod 4 and the diameter of intercommunicating pore 12, which will meet,
Sleeve 32 has enough thickness, and the thickness of insulating sleeve 32 is enable to guarantee that cavity bottom surface 11 and connecting rod 4 are realized reliably
Insulation.The occurrence of the thickness of insulating sleeve 32 and surge voltage intensity, 32 material and facility use environment of insulating sleeve etc. because
It is known as pass, also, the various factors that those skilled in the art can insulate according to insulating sleeve 32 is influenced, reasonably selects insulation sleeve
The thickness of cylinder 32, therefore, the selection for insulating sleeve 32 material, size does not do specific requirement in the present embodiment.
In the present embodiment, the diameter that the diameter of connecting column 5 is greater than connecting rod 4 can using the connecting column 5 being relatively large in diameter
Reduce loss of the initial measurement signal in transmission, improves signal extraction effect.Diameter with connecting column 5 insulate to adaptively
Diameter of the sleeve 32 in cavity 1 is greater than the diameter of intercommunicating pore 12, and is greater than the diameter of connecting column 5, makes connecting column 5 and cavity
Bottom surface 11 forms reliable insulation.Insulating sleeve 32 is located at the part other than 5 diameter of connecting column, can also be to 5 direction of connecting column
Extend, while improving insulation, moreover it is possible to play the effect for being fixedly connected with column 5.
In a kind of selectable embodiment, the side that cavity 1 is located at cavity cover board 6 is provided with abutted flange 9, docking
The side that flange 9 is located at cavity 1 is provided with seal groove 91.Abutted flange 9 on cavity 1 is used to carry out screw thread with cavity cover board 6
It is connected and fixed, at the same time it can also be also provided on the reserved window 120 of GIS pipeline 100 to reversed flange arrangement, to realize
Cavity 1 and 100 flanged joint of GIS pipeline.
In a kind of selectable embodiment, high-frequency signal receiving part 2 is disc structure made of metal.Preferably
Using stainless steel material, so that high-frequency signal receiving part 2 has corrosion protection ability, extraction element service life is improved.
In a kind of selectable embodiment, connecting rod 4 is threaded rod, and connecting column 5 is provided with tapped blind hole 51, is connected
Bar 4 is threadedly coupled with connecting column 5 by tapped blind hole 51.The cooperation of threaded rod and blind hole 51 connects connecting rod 4 and connecting column 5
Closely, be conducive to the conduction of signal, improve signal extraction effect.
In a kind of selectable embodiment, cavity 1 and cavity cover board 6 are made using stainless steel.Stainless steel has anti-
The ability of corrosion, cavity 1 and cavity cover board 6 can resist complex external environment to the rust of extraction element using stainless steel material
Erosion improves extraction element service life
In a kind of selectable embodiment, airtight and watertight padding 911 is filled in seal groove 91.Airtight and watertight padding 911 can be with
It turns round the common sealing materials such as rope or rubber seal using ceramic fibre to be made, the sealing for improving cavity 1 and GIS pipeline 100 is imitated
Fruit.
From the above technical scheme, lower shelf depreciation high-frequency signal is impacted this application provides a kind of steep-front extract dress
It sets, comprising: cavity；Cavity one end is provided with cavity bottom surface, and cavity is provided with intercommunicating pore on bottom surface；Cavity bottom surface is being located at cavity
External side is provided with high-frequency signal receiving part, and the first insulation is provided between high-frequency signal receiving part and cavity bottom surface
Layer；The side that high-frequency signal receiving part is located at cavity bottom surface is provided with connecting rod, and connecting rod is located in intercommunicating pore, and connecting rod is remote
One end from high-frequency signal receiving part is within the cavity, and the diameter of connecting rod is less than connection bore dia；Connecting rod is located at cavity
Interior one end is provided with connecting column, and the diameter of connecting column is greater than the diameter of connecting rod；The periphery of connecting rod is provided with insulating sleeve,
The diameter of insulating sleeve in the cavity is greater than the diameter of connecting column, is dielectrically separated from cavity bottom surface with connecting rod and connecting column；Chamber
The body other end is provided with cavity cover board, and connecting hole is provided on cavity cover board, and cavity cover board is provided with electrical connection in connection hole
Head, is provided with banana connector between electrical connector and connecting column, electrical connector is connect with connecting column by banana connector.It uses
When, cavity is placed in the reserved window of GIS pipeline, is located at high-frequency signal receiving part in GIS pipeline, before carrying out suddenly
Along when impacting lower GIS partial discharge detection, high-frequency signal receiving part receives GIS device under steep-front surge voltage and locally puts
The initial measurement signal of electricity, initial measurement signal are sent to electricity by connecting rod, connecting column and the banana connector to insulate with cavity
Connector, to realize the extraction for impacting lower shelf depreciation high-frequency signal to steep-front.
Embodiment two
The embodiment of the present application provides a kind of lower shelf depreciation high frequency testing system of steep-front impact, as shown in Fig. 2, this
Apply for that the steep-front that embodiment provides impacts lower shelf depreciation high frequency testing system, comprising:
Extraction element 10, signal processing module 20 shown in the embodiment of the present application one, signal transmission module 30 and display
Terminal 40；Signal processing module 20 is connect with the electrical connector 7 of extraction element 10, and signal processing module 20 is used for extraction element
The 10 initial measurement signals extracted carry out High frequency filter, export high-frequency signal measurement；At 30 one end of signal transmission module and signal
It manages module 20 to connect, the other end is connect with display terminal 40；Signal transmission module 30 is aobvious for high-frequency signal measurement to be transmitted to
Show terminal 40.
In a kind of selectable embodiment, signal processing module 20 includes high-frequency filter circuit 201, High frequency filter electricity
Road 201 is used to remove the low-frequency noise in initial measurement signal, exports high-frequency signal measurement.Due to by various external factors
Influence, can include low-frequency noise in initial measurement signal, low-frequency noise be superimposed upon in the high-frequency signal of shelf depreciation, influence to survey
The accuracy of result is measured, therefore the present embodiment removes the low-frequency noise in initial measurement signal using high-frequency filter circuit 201, it is defeated
High-frequency signal measurement out improves measurement result accuracy.The structure and use high-frequency filter circuit of high-frequency filter circuit carry out high
Frequency filtering belongs to the common knowledge of those skilled in the art, therefore, for the structure of high-frequency filter circuit 201, in the present embodiment
It repeats no more.
In a kind of selectable embodiment, signal transmission module 30 includes analog-digital converter 301, analog-digital converter
301 for being converted into the digital signal that display terminal 40 can identify for high-frequency signal measurement.Due to from signal processing module 20
The high-frequency signal measurement of output is analog signal, and display terminal 40 allows generally for receiving digital signal, therefore, in the present embodiment
By analog-digital converter 301 by analog signal conversion in digital signal, so as to 40 reception of display terminal processing, meanwhile, number letter
Number it is easy to be stored in the storage medium of display terminal 40, is easy to achieve and check.
From the above technical scheme, the application provides steep-front a kind of and impacts lower shelf depreciation high frequency testing system
System, including extraction element provided by the present application, signal processing module, signal transmission module and display terminal；Signal processing module
It is connect with the electrical connector of measuring device, receives initial measurement signal for extraction element, and carry out to initial measurement signal high
Frequency filters, and exports high-frequency signal measurement；Signal transmission module one end is connect with signal processing module, and the other end and display terminal connect
It connects；Signal processing module is used to high-frequency signal measurement being transmitted to display terminal, and measuring system provided by the present application passes through measurement
Device extracts initial measurement signal, is filtered by signal processing module to initial measurement signal, removes low-frequency noise, obtains
The high-frequency signal measurement that steep-front impacts lower shelf depreciation makes GIS finally, being sent to display terminal by signal transmission module
Equipment steep-front impacts lower shelf depreciation high-frequency signal and quantifies display on display terminal, to realize under steep-front impact
The measurement of shelf depreciation high-frequency signal.
Embodiment three
The embodiment of the present application provides another steep-front and impacts lower shelf depreciation high frequency testing system, such as Fig. 3 institute
Show, the difference of the embodiment of the present application and embodiment two is:
Signal transmission module 30 further includes electric light converter 302, photoelectric converter 303 and optical cable 304；Electric light converter
302 are located at 301 side of analog-digital converter, connect with analog-digital converter 301, and photoelectric converter 303 is located at 40 side of display terminal,
It is connect with display terminal 40, electric light converter 302 is connect with photoelectric converter 303 by optical cable 304.
Since GIS pipeline 100 is up to several hundred kilometers sometimes, this just impacts lower shelf depreciation high-frequency signal to steep-front
It measures and proposes the requirement of far-end measuring, the ability for making measuring system have far-end measuring in the present embodiment turns in modulus
Electric light converter 302 is arranged in the output end of parallel operation 301, converts digital signals into optical signal, and realize long distance using optical cable 304
From low-loss transmission.Display terminal 40 in the present embodiment can be set in measuring station, and be arranged before display terminal 40
Photoelectric converter 303, by the way that the optical signal transmitted at a distance is reduced into digital signal by optical cable 304 and photoelectric converter 303,
And it is delivered to display terminal 40, to realize the far-end measuring for impacting lower shelf depreciation high-frequency signal to GIS device steep-front.
From the above technical scheme, the application provides steep-front a kind of and impacts lower shelf depreciation high frequency testing system
System, including extraction element provided by the present application, signal processing module, signal transmission module and display terminal；Signal processing module
It is connect with the electrical connector of measuring device, receives initial measurement signal for extraction element, and carry out to initial measurement signal high
Frequency filters, and exports high-frequency signal measurement；Signal transmission module one end is connect with signal processing module, and the other end and display terminal connect
It connects；Signal processing module is used to high-frequency signal measurement being transmitted to display terminal, and measuring system provided by the present application passes through measurement
Device extracts initial measurement signal, is filtered by signal processing module to initial measurement signal, removes low-frequency noise, obtains
Steep-front impacts the high-frequency signal measurement of lower shelf depreciation, finally, being sent to display terminal by signal transmission module, wherein
High-frequency signal measurement can be converted into optical signal by digital signal by signal transmission module, after optical cable transmits at a distance, also
Original is transferred to display terminal at digital signal, and GIS device steep-front is made to impact lower shelf depreciation high-frequency signal in display terminal
Upper quantization display, to realize the far-end measuring for impacting lower shelf depreciation high-frequency signal to steep-front.
It should be noted that, in this document, the relational terms of such as " first " and " second " or the like are used merely to one
A entity or operation with another entity or operate distinguish, without necessarily requiring or implying these entities or operation it
Between there are any actual relationship or orders.Moreover, the terms "include", "comprise" or its any other variant are intended to
Cover non-exclusive inclusion, so that the process, method, article or equipment for including a series of elements not only includes those
Element, but also including other elements that are not explicitly listed, or further include for this process, method, article or setting
Standby intrinsic element.
Those skilled in the art after considering the specification and implementing the invention disclosed here, will readily occur to its of the application
Its embodiment.This application is intended to cover any variations, uses, or adaptations of the application, these modifications, purposes or
Person's adaptive change follows the general principle of the application and including the undocumented common knowledge in the art of the application
Or conventional techniques.The description and examples are only to be considered as illustrative, and the true scope and spirit of the application are by following
Claim is pointed out.
It should be understood that the application is not limited to the precise structure that has been described above and shown in the drawings, and
And various modifications and changes may be made without departing from the scope thereof.Scope of the present application is only limited by the accompanying claims.
Claims (10)
1. a kind of steep-front impacts lower shelf depreciation high-frequency signal extraction element, which is characterized in that including cavity (1)；
Described cavity (1) one end is provided with cavity bottom surface (11), is provided with intercommunicating pore (12) on the cavity bottom surface (11)；It is described
Cavity bottom surface (11) is provided with high-frequency signal receiving part (2), the high-frequency signal in the side for being located at the cavity (1) outside
The first insulating layer (31) are provided between receiving part (2) and the cavity bottom surface (11)；
The side that the high-frequency signal receiving part (2) is located at the cavity bottom surface (11) is provided with connecting rod (4), the connection
Bar (4) is located in the intercommunicating pore (12), and the connecting rod (4) is located at far from one end of the high-frequency signal receiving part (2)
In the cavity (1), the diameter of the connecting rod (4) is less than the intercommunicating pore (12) diameter；The connecting rod (4) is located at described
One end in cavity (1) is provided with connecting column (5), and the diameter of the connecting column (5) is greater than the diameter of the connecting rod (4)；Institute
The periphery for stating connecting rod (4) is provided with insulating sleeve (32), and diameter of the insulating sleeve (32) in the cavity (1) is greater than
The diameter of the connecting column (5)；
Cavity (1) other end is provided with cavity cover board (6), is provided between the cavity cover board (6) and the cavity (1)
Second insulating layer (33) is provided with connecting hole (61) on the cavity cover board (6), and the cavity cover board (6) is in the connecting hole
(61) it is provided at electrical connector (7), banana connector (8) is provided between the electrical connector (7) and the connecting column (5),
The electrical connector (7) is connect with the connecting column (5) by the banana connector (8).
2. extraction element according to claim 1, which is characterized in that the cavity (1) is located at the cavity cover board (6)
Side is provided with abutted flange (9), and the side that the abutted flange (9) is located at the cavity (1) is provided with seal groove (91).
3. extraction element according to claim 1, which is characterized in that the high-frequency signal receiving part (2) is made of metal
At disc structure.
4. extraction element according to claim 1, which is characterized in that the connecting rod (4) is threaded rod, the connecting column
(5) it is provided with tapped blind hole (51), the connecting rod (4) and the connecting column (5) are connected by the tapped blind hole (51) screw thread
It connects.
5. extraction element according to claim 1, which is characterized in that the cavity (1) and the cavity cover board (6) use
Stainless steel is made.
6. extraction element according to claim 2, which is characterized in that be filled with airtight and watertight padding in the seal groove (91)
(911)。
7. a kind of steep-front impacts lower shelf depreciation high frequency testing system, which is characterized in that the system comprises: right is wanted
Ask extraction element described in 1-6 any one (10), signal processing module (20), signal transmission module (30) and display terminal
(40)；
The signal processing module (20) connect with the electrical connector (7) of the extraction element (10), the signal processing
The initial measurement signal that module (20) is used to extract the extraction element (10) carries out High frequency filter, output high frequency measurement letter
Number；
Described signal transmission module (30) one end is connect with the signal processing module (20), the other end and the display terminal
(40) it connects；The signal transmission module (30) is used to high-frequency signal measurement being transmitted to the display terminal (40).
8. measuring system according to claim 7, which is characterized in that the signal processing module (20) includes High frequency filter
Circuit (201), the high-frequency filter circuit (201) are used to remove the low-frequency noise in initial measurement signal, export high frequency measurement
Signal.
9. measuring system according to claim 7, which is characterized in that the signal transmission module (30) includes analog-to-digital conversion
Device (301), the analog-digital converter (301) are used to high-frequency signal measurement being converted into what the display terminal (40) can identify
Digital signal.
10. measuring system according to claim 9, which is characterized in that the signal transmission module (30) further includes electric light
Converter (302), photoelectric converter (303) and optical cable (304)；The electric light converter (302) is located at the analog-digital converter
(301) side is connect with the analog-digital converter (301), and the photoelectric converter (303) is located at the display terminal (40) one
Side is connect with the display terminal (40), and the electric light converter (302) and the photoelectric converter (303) pass through the light
Cable (304) connection.
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| JP5663318B2 (en) * | 2011-01-19 | 2015-02-04 | 株式会社日立製作所 | Partial discharge test method for inverter-driven rotating electrical machines |
| CN102323523B (en) * | 2011-06-02 | 2014-01-29 | 平高集团有限公司 | Built-in coupler for measuring local discharge of GIS (Gas Insulated switchgear) |
| CN202256595U (en) * | 2011-10-20 | 2012-05-30 | 山东电力研究院 | Partial discharge ultrahigh-frequency signal detecting sensor |
| CN202994964U (en) * | 2012-12-29 | 2013-06-12 | 内蒙古自治区电力科学研究院 | UHF partial discharge sensor capable of closely cooperating with GIS basin-type insulator |
| CN203164364U (en) * | 2013-04-23 | 2013-08-28 | 四川菲博斯科技有限责任公司 | GIS partial discharge monitoring device with built-in ultrahigh frequency sensor |
| CN103605053B (en) * | 2013-11-19 | 2015-10-28 | 国家电网公司 | Local discharge of gas-insulator switchgear test unit and method under surge voltage |
| CN104062561B (en) * | 2014-06-21 | 2017-06-06 | 宁波理工环境能源科技股份有限公司 | A kind of GIS partial discharge detects built-in capacitance coupling sensor |
| CN104459494B (en) * | 2014-12-17 | 2017-08-08 | 西安交通大学 | A kind of GIS device partial discharge measurement device under impulse voltage on site |
| CN204462318U (en) * | 2015-03-27 | 2015-07-08 | 江苏峰工电气科技有限公司 | For the built-in sensor that GIS partial discharge detects |
| CN106291266A (en) * | 2015-05-25 | 2017-01-04 | 国家电网公司 | A kind of shelf depreciation In-circiut tester |
| CN204666772U (en) * | 2015-05-25 | 2015-09-23 | 国家电网公司 | A kind of shelf depreciation In-circiut tester |
| CN105842589A (en) * | 2016-03-21 | 2016-08-10 | 上海申色电气有限公司 | Device, system and method for detecting GIS local discharge |
| CN205507014U (en) * | 2016-04-20 | 2016-08-24 | 国网浙江省电力公司电力科学研究院 | GIS partial discharge detector's UHF sensor |
| CN207473037U (en) * | 2017-10-16 | 2018-06-08 | 云南电网有限责任公司电力科学研究院 | The lower shelf depreciation high-frequency signal extraction element of steep-front impact and measuring system |
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