CN209264891U - A kind of contactless very high frequency(VHF) partial discharge detecting system of hv cable termination - Google Patents
A kind of contactless very high frequency(VHF) partial discharge detecting system of hv cable termination Download PDFInfo
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- CN209264891U CN209264891U CN201821411037.3U CN201821411037U CN209264891U CN 209264891 U CN209264891 U CN 209264891U CN 201821411037 U CN201821411037 U CN 201821411037U CN 209264891 U CN209264891 U CN 209264891U
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- insulating bar
- partial discharge
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- high frequency
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Abstract
The utility model provides a kind of contactless very high frequency(VHF) partial discharge detecting system of hv cable termination, the measuring instrument analyzed and shown including contactless sensor and for very high frequency(VHF) Partial discharge signal；Wherein, sensor includes insulating bar, BNC connector and at least one for incuding the induction electrode for the radio wave that very high frequency(VHF) Partial discharge signal source is emitted；Wherein, BNC connector is installed on insulating bar；Each induction electrode is both secured on insulating bar, and the both ends of each induction electrode pass through corresponding conducting wire and are connected on the input terminal of BNC connector；Measuring instrument is by cable connection on the output end of BNC connector.Implement the utility model, be not directly contacted with high-tension cable, can quickly and accurately determine UHF Partial discharge signal source and its position nearby, it is not only time saving and energy saving.Also assure personnel safety.
Description
Technical field
The utility model relates to signal detection technique field more particularly to a kind of contactless very high frequency(VHF)s of hv cable termination
(UHF) partial discharge detecting system.
Background technique
Shelf depreciation parameter is the important indicator of Voltage Cable Lines Construction health status, mainly uses high-frequency pulse current method,
Live detection is carried out at the ground line of high-tension cable by HF current transformer.
Since transmission attenuation of the high-frequency signal in high-tension cable is less big, one kilometer can be generally passed, therefore often exist
The signal that detection place measures is not necessarily to be issued by the Partial discharge signal source on test point, in particular, UHF Partial discharge signal is decayed
It is very big, it is possible to detect within five meters under normal circumstances.Currently, correct for UHF Partial discharge signal to be verified source
Whether, it still needs to further detect using Various Complex means, causes workload very big, it is not only time-consuming and laborious, but also will be with
High-tension cable is directly contacted, and security risk is easy to produce.
Utility model content
The technical problem to be solved by the embodiment of the utility model is, it is contactless very to provide a kind of hv cable termination
High frequency partial discharge detecting system, is not directly contacted with high-tension cable, can nearby quickly and accurately determine UHF Partial discharge signal source and
Its position, it is not only time saving and energy saving.Also assure personnel safety.
In order to solve the above-mentioned technical problem, it is contactless very to provide a kind of hv cable termination for the utility model embodiment
High frequency partial discharge detecting system, the measurement analyzed and shown including contactless sensor and for very high frequency(VHF) Partial discharge signal
Instrument；Wherein,
The sensor includes insulating bar, BNC connector and at least one is emitted for incuding very high frequency(VHF) Partial discharge signal source
Radio wave induction electrode；Wherein, the BNC connector is installed on the insulating bar；Each induction electrode is both secured to
On the insulating bar, and the both ends of each induction electrode pass through corresponding conducting wire and are connected on the input terminal of the BNC connector；
The measuring instrument is by cable connection on the output end of the BNC connector.
It wherein, include the first induction section, the second induction section and the third sequentially connected there are two the induction electrodes
Incude section；Wherein,
The first induction section is respectively positioned on the second induction section towards the same of the insulating bar with third induction section
On side；
The first induction section is fixed on described insulating bar one end far from one end of the second induction section, and far from institute
BNC connector setting is stated, and draws the positive input terminal that a conducting wire accesses the BNC connector thereon；
The third induction section is fixed on the insulating bar far from one end of the second induction section, and close to described
BNC connector setting, draws the negative input end that a conducting wire accesses the BNC connector thereon.
Wherein, the first induction section, the second induction section and third induction section are sequentially mutually connected vertically.
Wherein, the insulating bar is hollow tubular, and each in the first induction section of each induction electrode and third induction section
It is in the insulating bar and fixed from being all extended to far from its one end for corresponding to the second induction section, so that the first of each induction electrode
The conducting wire that the positive input terminal and negative input end that access the BNC connector are respectively drawn in induction section and third induction section is respectively positioned on institute
It states in insulating bar.
Wherein, the sensor further include: upper fixing clamp and lower fixing clamp；Wherein,
Cross through-hole is offered on fixed folder；The vertical side that fixed folder passes through cross through-hole thereon
It is socketed on the insulating bar to through-hole and fixed, is also respectively penetrated accordingly by the horizontal direction through-hole of cross through-hole thereon
First induction section extends to one end in the insulating bar；
Cross through-hole is offered on the lower fixing clamp；The vertical side that the lower fixing clamp passes through cross through-hole thereon
It is socketed on the insulating bar to through-hole and fixed, is also respectively penetrated accordingly by the horizontal direction through-hole of cross through-hole thereon
Third induction section extends to one end in the insulating bar.
Wherein, each induction electrode is made by one kind among metallic copper, aluminium, iron.
Wherein, the frequency range that each induction electrode incudes the emitted radio wave in very high frequency(VHF) Partial discharge signal source exists
Between 50MHz~100MHz.
Implement the utility model embodiment, has the following beneficial effects:
In the utility model embodiment, by being sent out using contactless sensor sensing very high frequency(VHF) Partial discharge signal source
The radio wave penetrated, and by realized in cable connection to measuring instrument signal analysis and display so that no longer with high-tension cable
Directly contacted, it will be able to UHF Partial discharge signal source and its position are quickly and accurately determined nearby, it is not only time saving and energy saving.Also really
Personnel safety is protected.
Detailed description of the invention
In order to illustrate the embodiment of the utility model or the technical proposal in the existing technology more clearly, below will be to embodiment
Or attached drawing needed to be used in the description of the prior art is briefly described, it should be apparent that, the accompanying drawings in the following description is only
It is some embodiments of the utility model, for those of ordinary skill in the art, before not making the creative labor property
It puts, obtains other drawings based on these drawings the scope for still falling within the utility model.
Fig. 1 is the company of the contactless very high frequency(VHF) partial discharge detecting system of hv cable termination provided by the embodiment of the utility model
Connect structural schematic diagram.
Specific embodiment
It is practical new to this below in conjunction with attached drawing to keep the purpose of this utility model, technical solution and advantage clearer
Type is described in further detail.
As shown in Figure 1, in the utility model embodiment, a kind of contactless very high frequency(VHF) office of the hv cable termination provided
Detection system is put, the measuring instrument 2 analyzed and shown including contactless sensor 1 and for very high frequency(VHF) Partial discharge signal；Its
In,
Sensor 1 is emitted including insulating bar 11, BNC connector 12 and at least one for incuding very high frequency(VHF) Partial discharge signal source
Radio wave induction electrode 13；Wherein, BNC connector 12 is installed on insulating bar 11；Each induction electrode 13 is both secured to
On the insulating bar 11, and the both ends of each induction electrode 13 pass through the input terminal that corresponding conducting wire is connected to BNC connector 12
On；
Measuring instrument 2 is by cable connection on the output end of BNC connector 12.
It should be noted that it includes but is not limited to metallic copper, aluminium, iron etc. that each induction electrode 13, which makes metal, can be
A kind of metal is also possible to the alloy of various metals formation.At this point, each induction electrode 13 incudes very high frequency(VHF) Partial discharge signal source
The frequency range of emitted radio wave is between 50MHz~100MHz, and the distance range incuded is within 5 meters.Induced electricity
Pole 13 can be by the radio wave signal real-time Transmission incuded to measuring instrument 2, and measuring instrument 2 can be existed by predeterminated frequency range
The frequency of radio wave is judged between 50MHz~100MHz whether within its scope, once judge the frequency of radio wave
Within the scope of said frequencies, will real-time display correct judgment, or even carry out sound-light alarm, to remind staff to feel at this time
The current location for answering the incuded high-tension cable of electrode 13 is very high frequency(VHF) Partial discharge signal source.
In the utility model embodiment, in order to enhance the range of 1 induction wireless electric wave of sensor, detection accuracy is improved,
It therefore include that the first induction section 131, second sequentially connected incudes section 132 and third there are two setting induction electrodes 13
Incude section 133；Wherein, the first induction section 131 and third induction section 133 are respectively positioned on the second induction section 132 towards insulating bar 11
On the same side；First induction section 131 is fixed on 11 one end of insulating bar far from one end of the second induction section 132, and is connect far from BNC
First 12 setting, and the positive input terminal of conducting wire access BNC connector 12 is drawn thereon；Third incudes section 133 far from the second induction section
132 one end is fixed on insulating bar 11, and is arranged close to BNC connector 12, draws conducting wire access BNC connector 12 thereon
Negative input end.In one embodiment, two induction electrodes 13 form rectangular frame structure, at this time the first induction section 131, the
Two induction sections 132 and third induction section 133 are sequentially mutually connected vertically, i.e., the first induction section on each induction electrode 13
131 and second induction section 132 be mutually perpendicular to, second induction section 132 and third induction section 133 be mutually perpendicular to.
In the utility model embodiment, in order to avoid induction electrode 13 accesses the conducting wire of BNC connector 12 because long-term exposed
The problem of being oxidized corrosion outside and easily, therefore it is hollow tubular that insulating bar 11, which is arranged, and the first of each induction electrode 13 is felt
It answers section 131 and third to incude in section 133 respectively to all extend in insulating bar 11 far from its one end for corresponding to the second induction section 132
And it is fixed, so that respectively drawing access BNC connector in the first induction section 131 of each induction electrode 13 and third induction section 133
12 positive input terminal and the conducting wire of negative input end are respectively positioned in insulating bar 11, to improve the service life of sensor 1.
In the utility model embodiment, in order to enhance the fastness that induction electrode 13 is connect with insulating bar 11, therefore pass
Sensor 1 further include: upper fixing clamp 3 and lower fixing clamp 4；Wherein, cross through-hole is offered on upper fixing clamp 3；Upper fixing clamp 3 is logical
The vertical direction through-hole for crossing cross through-hole thereon is socketed on the insulating bar 11 and fixes, also by cross logical thereon
The horizontal direction through-hole in hole respectively penetrates corresponding first induction section 131 and extends to one end in insulating bar 11；On lower fixing clamp 4
Offer cross through-hole；Lower fixing clamp 4 is socketed on insulating bar 11 simultaneously by the vertical direction through-hole of cross through-hole thereon
It is fixed, also by the horizontal direction through-hole of cross through-hole thereon respectively penetrate corresponding third incude section 133 extend to it is described exhausted
One end in edge bar 11.In one embodiment, upper fixing clamp 3 and the structure having the same of lower fixing clamp 4.
The contactless very high frequency(VHF) partial discharge detecting system of hv cable termination in the utility model embodiment is in use, first
Sensor 1 is assembled, specifically, upper fixing clamp 3 and lower fixing clamp 4 are first fixedly mounted on insulating bar 11, it then will sense
The conducting wire correspondence on electrode 13 is answered to penetrate on fixing clamp 3 and lower fixing clamp 4 after the horizontal through hole of cross-hole, into insulating bar 11
Input terminal that is interior and accessing BNC connector 12 accordingly, then penetrates the correspondence of induction electrode 13 on fixing clamp 3 and lower fixing clamp 4
It is fixed in the horizontal through hole and entrance insulating bar 11 of cross-hole；Fixed BNC connector 12, i.e. completion sensor 1 are finally installed
Assembling；
Secondly, sensor 1 is connected with measuring instrument 2 by cable, i.e., BNC connects on cable one end connection sensor 1
First 12 output end, the other end connect measuring instrument；
Then, measuring instrument 2 is opened, by sensor 1 close to not in contact with high-tension cable, alignment is suspected to be UHF Partial discharge signal source
Near position (within 5 meters of distance) carry out signal scanning；Once the frequency of the received radio wave of induction electrode 13 of sensor 1
When rate is located at preset frequency range on measuring instrument 2, measuring instrument 2 starts to show judicious as a result, even opening acousto-optic report
It is alert, it is very high frequency(VHF) Partial discharge signal source to remind the current location of staff's incude high-tension cable of induction electrode 13 at this time,
To be not directly contacted with high-tension cable, it will be able to quickly and accurately determine UHF Partial discharge signal source and its position nearby, not only save
Shi Shengli.Also ensure personnel safety.
Implement the utility model embodiment, has the following beneficial effects:
In the utility model embodiment, by being sent out using contactless sensor sensing very high frequency(VHF) Partial discharge signal source
The radio wave penetrated, and by realized in cable connection to measuring instrument signal analysis and display so that no longer with high-tension cable
Directly contacted, it will be able to UHF Partial discharge signal source and its position are quickly and accurately determined nearby, it is not only time saving and energy saving.Also really
Personnel safety is protected.
Above disclosed is only a kind of preferred embodiment of the utility model, certainly cannot be practical to limit with this
Novel interest field, therefore equivalent variations made according to the claim of the utility model still belong to what the utility model was covered
Range.
Claims (7)
1. a kind of contactless very high frequency(VHF) partial discharge detecting system of hv cable termination, which is characterized in that including contactless biography
Sensor (1) and the measuring instrument (2) analyzed and shown for very high frequency(VHF) Partial discharge signal；Wherein,
The sensor (1) includes insulating bar (11), BNC connector (12) and at least one for incuding very high frequency(VHF) Partial discharge signal source
The induction electrode (13) of the radio wave emitted；Wherein, the BNC connector (12) is installed on the insulating bar (11)；Often
One induction electrode (13) is both secured on the insulating bar (11), and the both ends of each induction electrode (13) pass through and lead accordingly
Line is connected on the input terminal of the BNC connector (12)；
The measuring instrument (2) is by cable connection on the output end of the BNC connector (12).
2. the contactless very high frequency(VHF) partial discharge detecting system of hv cable termination as described in claim 1, which is characterized in that described
There are two induction electrodes (13), includes the first induction section (131), the second induction section (132) and third sense sequentially connected
Answer section (133)；Wherein,
First induction section (131) and third induction section (133) are respectively positioned on second induction section (132) described in
On the same side of insulating bar (11)；
First induction section (131) is fixed on the insulating bar (11) one end far from one end of second induction section (132)
On, and be arranged far from the BNC connector (12), and draw the positive input terminal that a conducting wire accesses the BNC connector (12) thereon；
Third induction section (133) is fixed on the insulating bar (11) far from one end of second induction section (132), and
It is arranged close to the BNC connector (12), draws the negative input end that a conducting wire accesses the BNC connector (12) thereon.
3. the contactless very high frequency(VHF) partial discharge detecting system of hv cable termination as claimed in claim 2, which is characterized in that described
First induction section (131), the second induction section (132) and third induction section (133) are sequentially mutually connected vertically.
4. the contactless very high frequency(VHF) partial discharge detecting system of hv cable termination as claimed in claim 3, which is characterized in that described
Insulating bar (11) is hollow tubular, and the first of each induction electrode (13) incudes section (131) and third induction section (133)
Upper respective one end far from its second induction section (132) of correspondence all extends in the insulating bar (11) and fixes, so that each
It is respectively drawn in the first induction section (131) and third induction section (133) of induction electrode (13) and accesses the BNC connector (12)
The conducting wire of positive input terminal and negative input end is respectively positioned in the insulating bar (11).
5. the contactless very high frequency(VHF) partial discharge detecting system of hv cable termination as claimed in claim 4, which is characterized in that described
Sensor (1) further include: upper fixing clamp (3) and lower fixing clamp (4)；Wherein,
Cross through-hole is offered on fixed folder (3)；Fixed folder (3) passes through the vertical of cross through-hole thereon
Direction through-hole is socketed on the insulating bar (11) and fixes, and is also worn respectively by the horizontal direction through-hole of cross through-hole thereon
Enter corresponding first induction section (131) and extends to one end in the insulating bar (11)；
Cross through-hole is offered on the lower fixing clamp (4)；The lower fixing clamp (4) is vertical by cross through-hole thereon
Direction through-hole is socketed on the insulating bar (11) and fixes, and is also worn respectively by the horizontal direction through-hole of cross through-hole thereon
Enter corresponding third induction section (133) and extends to one end in the insulating bar (11).
6. the contactless very high frequency(VHF) partial discharge detecting system of hv cable termination as claimed in claim 5, which is characterized in that described
Each induction electrode (13) is made by one kind among metallic copper, aluminium, iron.
7. the contactless very high frequency(VHF) partial discharge detecting system of hv cable termination as claimed in claim 6, which is characterized in that described
Each induction electrode (13) incudes the frequency range of the emitted radio wave in very high frequency(VHF) Partial discharge signal source in 50MHz ~ 100MHz
Between.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821411037.3U CN209264891U (en) | 2018-08-30 | 2018-08-30 | A kind of contactless very high frequency(VHF) partial discharge detecting system of hv cable termination |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821411037.3U CN209264891U (en) | 2018-08-30 | 2018-08-30 | A kind of contactless very high frequency(VHF) partial discharge detecting system of hv cable termination |
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| Publication Number | Publication Date |
|---|---|
| CN209264891U true CN209264891U (en) | 2019-08-16 |
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ID=67551866
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821411037.3U Active CN209264891U (en) | 2018-08-30 | 2018-08-30 | A kind of contactless very high frequency(VHF) partial discharge detecting system of hv cable termination |
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| Country | Link |
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| CN (1) | CN209264891U (en) |
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2018
- 2018-08-30 CN CN201821411037.3U patent/CN209264891U/en active Active
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