CN208350926U - A kind of high-tension cable defect quick diagnosis device - Google Patents
A kind of high-tension cable defect quick diagnosis device Download PDFInfo
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- CN208350926U CN208350926U CN201820993361.4U CN201820993361U CN208350926U CN 208350926 U CN208350926 U CN 208350926U CN 201820993361 U CN201820993361 U CN 201820993361U CN 208350926 U CN208350926 U CN 208350926U
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- tension cable
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- cable
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Abstract
The utility model discloses a kind of high-tension cable defect quick diagnosis devices, the high-tension cable defect quick diagnosis device is for detecting whether a high-tension cable generates defect, the high-tension cable includes metal core, shield shield and high-voltage cable joint, shielding shield is socketed in outside the metal core, and, the shielding shield ground connection, the cable connector is set to the outside of the shielding shield, for connecting two adjacent cables, the high-tension cable defect quick diagnosis device includes transformer K, superfrequency electromagnetic wave detector, amplifier, filter, analog-digital converter and industrial personal computer, the transformer K is connect with a power-frequency voltage, after power-frequency voltage boosting, it is loaded on the metal core, when the high-tension cable has defect, the fault location of the high-tension cable generates extra-high frequency electromagnetic waves.
Description
Technical field
The utility model relates to electron electric power equipment technical field, specifically a kind of high-tension cable defect rapid diagnostic device
It sets.
Background technique
With the fast development of electric power network technique, twisted polyethylene cable (abbreviation XLPE) has good electrical property and hot
Can, and structure is simple, and the manufacturing cycle is short, and work tolerable temperature is high, and oil-free, laying is convenient, and power supply safety is reliable, is conducive to beauty
Change city, thus is widely used in each voltage class of electric system.But the insulation knot of twisted polyethylene cable
In structure often due in processing technology difficulty or raw material are impure and there are air gap and harmfulness impurity, or due to technique
Reason between insulation and semiconductive shielding layer there are gap or semiconductor are prominent to insulating layer, in these air gaps and impurity point
Shelf depreciation is easily generated at end, while may also can be generated various insulation in the installation and operation process of power cable and be lacked
Falling into leads to shelf depreciation.Shelf depreciation is the sign of cable insulation deterioration, and causes the one of the major reasons of insulation degradation, office
Portion's electric discharge is the running biggish security risk of power cable, if shelf depreciation development will cause to a certain extent
Insulation breakdown and cause power grid accident.Therefore, carrying out Partial Discharge Detection and Position Research to power cable and its connector has
Important meaning and economic value.
It mainly include at present high frequency partial discharge examination method, superelevation applied to the detection method for local discharge of cable run
Frequently, supercritical ultrasonics technology, damp oscillatory wave (OWTS) method etc..High frequency partial discharge examination method core component is this baseline ring of Kenneth Rogoff
Current sensor (abbreviation Rogowski coil), Rogowski coil is from coupling from the ground line or cross interconnected line of cable connector and cable termination
Close high-frequency impulse, the detection method can charge carry out Partial Discharge Detection, it is easy to carry, operation it is convenient, but need to electricity
The each cable connector in cable road, terminal are detected, and long cable circuit are detected more time-consuming, laborious.
Utility model content
The purpose of this utility model is to provide a kind of high-tension cable defect quick diagnosis devices, to solve in background technique
The problem of proposition.To achieve the above object, the utility model provides the following technical solutions；
A kind of high-tension cable defect quick diagnosis device, the high-tension cable defect quick diagnosis device are high for detecting one
Whether voltage cable generates defect, and the high-tension cable includes metal core, shielding shield and high-voltage cable joint, shields shield set
It connects outside the metal core, also, the shielding shield is grounded, the cable connector is set to the outer of the shielding shield
Side, for connecting two adjacent cables, the high-tension cable defect quick diagnosis device includes transformer K, superfrequency
Electromagnetic wave detector, amplifier, filter, analog-digital converter and industrial personal computer, the transformer K are connect with a power-frequency voltage, will
After the power-frequency voltage boosting, it is loaded on the metal core, when the high-tension cable has defect, the high-tension cable
Fault location generate extra-high frequency electromagnetic waves；
The superfrequency electromagnetic wave detector includes metal base plate, dielectric-slab, rectangular metal patch and coaxial probe, described
Dielectric-slab covers the metal base plate, and the rectangular metal patch is pasted on the dielectric-slab, the extra-high frequency electromagnetic waves inspection
It surveys device and the extra-high frequency electromagnetic waves is received by the gap between the rectangular metal patch and the metal base plate, and be converted into
The electric current of high frequency, the coaxial probe are fed as feeder line, and be will test signal and be transmitted to the amplifier, the amplification
Device is transmitted to the filter after amplifying the detection signal, after the filter is filtered the detection signal
The industrial personal computer is transmitted to be handled.
Preferably, the bandwidth of the extra-high frequency electromagnetic waves is between 300MHZ-1.5GHZ.
Preferably, the filter is high-pass filter, and the high-pass filter is for filtering out in the detection signal
Low-frequency component.
Preferably, the superfrequency electromagnetic wave detector can be installed by external method or built-in method is installed.
Preferably, the industrial personal computer also has in display screen interface, operation interface, oscillograph interface and alarm device interface
It is at least one.
Preferably, the transformer K includes iron core winding device, first resistor R1, second resistance R2, first capacitor C1 and
The input terminal of two capacitor C2, the iron core winding device are connect by the first resistor R1 with the power-frequency voltage, the iron core
By the work after boosting after the output end of winding device is in parallel with the second resistance R2 and first capacitor C1 and the second capacitor C2
Frequency boost in voltage is loaded on the metal core 13.
Compared with prior art, the utility model has the beneficial effects that the utility model is simple and reasonable, testing result
It is genuine and believable, it is portable high, there is engineering significance, compared with prior art, there is scene detection efficiency and detection essence
The advantages that high is spent, the live testing for being conducive to optimization, promoting cable, it is ensured that the safe and reliable operation of cable can adapt to difference
The cable requirement of diameter, can quickly find conducting wire aging position in cable, be conducive to be directed in the case where not destroying cable
Cable aging is replaced, and reduces cable cost, and data collection capacity is big, the requirement to environment is small.
Detailed description of the invention
Fig. 1 is a kind of structural schematic diagram of high-tension cable defect quick diagnosis device provided by the utility model；
Fig. 2 is the knot of the superfrequency electromagnetic wave detector of high-tension cable defect quick diagnosis device provided by the utility model
Structure schematic diagram；
Wherein, high-tension cable 1, shielding shield 2, high-voltage cable joint 3, superfrequency electromagnetic wave detector 4, amplifier 5, filter
Wave device 6, analog-digital converter 7, industrial personal computer 8, metal base plate 9, dielectric-slab 10, rectangular metal patch 11, coaxial probe 12, metal wire
Core 13.
Specific embodiment
The following will be combined with the drawings in the embodiments of the present invention, carries out the technical aspect in the utility model embodiment
Clearly and completely describe, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole
Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are without making creative work
Every other embodiment obtained, fall within the protection scope of the utility model.
Fig. 1-Fig. 2 is please referred to, a kind of embodiment provided by the utility model:
A kind of high-tension cable defect quick diagnosis device, the high-tension cable defect quick diagnosis device are high for detecting one
Whether voltage cable 1 generates defect, and the high-tension cable 1 includes metal core 13, shielding shield 2 and high-voltage cable joint 3, shielding
Shield 2 is socketed in outside the metal core 13, also, the shielding shield 2 is grounded, and the cable connector 3 is set to the screen
The outside for covering shield 2, for connecting two adjacent cables, the high-tension cable defect quick diagnosis device includes transformation
Device K, superfrequency electromagnetic wave detector 4, amplifier 5, filter 6, analog-digital converter 7 and industrial personal computer 8, the transformer K and one
Power-frequency voltage connection is loaded on the metal core 13, after power-frequency voltage boosting when the high-tension cable 1 has
When defect, the fault location of the high-tension cable 1 generates extra-high frequency electromagnetic waves；
The superfrequency electromagnetic wave detector 4 includes metal base plate 9, dielectric-slab 10, rectangular metal patch 11 and coaxial spy
Needle 12, the dielectric-slab 10 cover the metal base plate 9, and the rectangular metal patch 11 is pasted on the dielectric-slab 10, institute
Superfrequency electromagnetic wave detector 4 is stated to pass through described in the gap reception between the rectangular metal patch 11 and the metal base plate 9
Extra-high frequency electromagnetic waves, and it is converted into the electric current of high frequency, the coaxial probe 12 is fed as feeder line, and will test signal biography
The amplifier 5 is transported to, the amplifier 5 is transmitted to the filter 6, the filtering after amplifying the detection signal
Device 6 is transmitted to the industrial personal computer 8 after being filtered to the detection signal and handles.
In the present embodiment, the bandwidth of the extra-high frequency electromagnetic waves is between 300MHZ-1.5GHZ, and the interference at scene is usual
In 300MHZ hereinafter, influencing especially small.
In the present embodiment, the filter 6 is high-pass filter, and the high-pass filter is for filtering out the detection signal
In low-frequency component, prevent low frequency noises testing result.
In the present embodiment, the superfrequency electromagnetic wave detector 4 can be installed by external method or the installation of built-in method, external
Method simple installation, built-in method sensitivity are more excellent.
In the present embodiment, the industrial personal computer 8 also there is display screen interface, operation interface, oscillograph interface and alarm device to connect
At least one of mouthful, the result output that will be tested.
In the present embodiment, the transformer K includes iron core winding device, first resistor R1, second resistance R2, first capacitor C1
And the second capacitor C2, the input terminal of the iron core winding device is connect by the first resistor R1 with the power-frequency voltage, described
After boosting after the output end of iron core winding device is in parallel with the second resistance R2 and first capacitor C1 and the second capacitor C2
Power-frequency voltage boosting be loaded on the metal core 13, meet the needs of boosting, prevent the interference of high current.
Working principle: when the high-tension cable 1 has defect, the making alive on the high-tension cable 1, the high-tension cable
1 fault location can generate extra-high frequency electromagnetic waves, using the superfrequency electromagnetic wave detector 4 rectangular metal patch 11 with it is described
Gap between metal base plate 9 receives the extra-high frequency electromagnetic waves, and is converted into the electric current of high frequency, 12 conduct of coaxial probe
Feeder line is fed, and be will test signal and be transmitted to the amplifier 5, and the amplifier 5 amplifies the detection signal
After be transmitted to the filter 6, the filter 6 is transmitted to the industrial personal computer 8 and carries out after being filtered to the detection signal
Processing handles the detection signal by the industrial personal computer 8, and whether the available high-tension cable 1 has defect and defect
Position.
Although the utility model is described in detail with reference to the foregoing embodiments, come for those skilled in the art
Say, it is still possible to modify the technical solutions described in the foregoing embodiments, or to part of technical characteristic into
Row equivalent replacement, within the spirit and principle of the utility model, any modification, equivalent replacement, improvement and so on should all
It is included within the scope of protection of this utility model.
Claims (6)
1. a kind of high-tension cable defect quick diagnosis device, it is characterised in that: the high-tension cable defect quick diagnosis device is used
Whether generate defect in detection one high-tension cable (1), the high-tension cable (1) include metal core (13), shielding shield (2) and
High-voltage cable joint (3), shielding shield (2) are socketed in the metal core (13) outside, also, the shielding shield (2) is grounded,
The cable connector (3) is set to the outside of shielding shield (2), for connecting two adjacent cables, the height
Voltage cable defect quick diagnosis device include transformer K, superfrequency electromagnetic wave detector (4), amplifier (5), filter (6),
Analog-digital converter (7) and industrial personal computer (8), the transformer K are connect with a power-frequency voltage, after power-frequency voltage boosting, are added
It is loaded on the metal core (13), when the high-tension cable (1) has defect, the fault location of the high-tension cable (1) is produced
Raw extra-high frequency electromagnetic waves；
The superfrequency electromagnetic wave detector (4) includes metal base plate (9), dielectric-slab (10), rectangular metal patch (11) and same
Axis probe (12), the dielectric-slab (10) cover the metal base plate (9), and the rectangular metal patch (11), which is pasted onto, to be given an account of
On scutum (10), the superfrequency electromagnetic wave detector (4) passes through the rectangular metal patch (11) and the metal base plate (9)
Between gap receive the extra-high frequency electromagnetic waves, and be converted into the electric current of high frequency, the coaxial probe (12) as feeder line into
Row feed, and will test signal and be transmitted to the amplifier (5), after the amplifier (5) amplifies the detection signal
It is transmitted to the filter (6), the filter (6) is transmitted to the industrial personal computer (8) after being filtered to the detection signal
It is handled.
2. a kind of high-tension cable defect quick diagnosis device according to claim 1, it is characterised in that: the superfrequency electricity
The bandwidth of magnetic wave is between 300MHZ-1.5GHZ.
3. a kind of high-tension cable defect quick diagnosis device according to claim 2, it is characterised in that: the filter
It (6) is high-pass filter, the high-pass filter is used to filter out the low-frequency component in the detection signal.
4. a kind of high-tension cable defect quick diagnosis device according to claim 3, it is characterised in that: the superfrequency electricity
Magnetic wave detector (4) can be installed by external method or the installation of built-in method.
5. a kind of high-tension cable defect quick diagnosis device according to claim 4, it is characterised in that: the industrial personal computer
(8) also there is at least one of display screen interface, operation interface, oscillograph interface and alarm device interface.
6. a kind of high-tension cable defect quick diagnosis device according to claim 5, it is characterised in that: the transformer K
Including iron core winding device, first resistor R1, second resistance R2, first capacitor C1 and the second capacitor C2, the iron core winding device
Input terminal is connect by the first resistor R1 with the power-frequency voltage, the output end of the iron core winding device and second electricity
Power-frequency voltage boosting after boosting is loaded onto the metal wire after the resistance R2 and first capacitor C1 and the second capacitor C2 are in parallel
On core (13).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820993361.4U CN208350926U (en) | 2018-06-26 | 2018-06-26 | A kind of high-tension cable defect quick diagnosis device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820993361.4U CN208350926U (en) | 2018-06-26 | 2018-06-26 | A kind of high-tension cable defect quick diagnosis device |
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| Publication Number | Publication Date |
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| CN208350926U true CN208350926U (en) | 2019-01-08 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20220244298A1 (en) * | 2021-01-29 | 2022-08-04 | Korea University Research And Business Foundation | Device and method for extracting electric network frequency |
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2018
- 2018-06-26 CN CN201820993361.4U patent/CN208350926U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20220244298A1 (en) * | 2021-01-29 | 2022-08-04 | Korea University Research And Business Foundation | Device and method for extracting electric network frequency |
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