CN108254663A - A kind of novel cable insulating sheath fault location probe and positioning device - Google Patents
A kind of novel cable insulating sheath fault location probe and positioning device Download PDFInfo
- Publication number
- CN108254663A CN108254663A CN201810322329.8A CN201810322329A CN108254663A CN 108254663 A CN108254663 A CN 108254663A CN 201810322329 A CN201810322329 A CN 201810322329A CN 108254663 A CN108254663 A CN 108254663A
- Authority
- CN
- China
- Prior art keywords
- probe
- cable
- fault location
- wrap sheet
- insulating sheath
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- 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
- G01R31/1263—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 of solid or fluid materials, e.g. insulation films, bulk material; of semiconductors or LV electronic components or parts; of cable, line or wire insulation
- G01R31/1272—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 of solid or fluid materials, e.g. insulation films, bulk material; of semiconductors or LV electronic components or parts; of cable, line or wire insulation of cable, line or wire insulation, e.g. using partial discharge measurements
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Testing Relating To Insulation (AREA)
Abstract
The present invention provides a kind of novel cable insulating sheath fault location probe and positioning device, for the positioning of the cable sheath insulation fault in pipeline, including：Probe body, wrap sheet and movable part, the wrap sheet is rotatably connected with probe body, the probe body and wrap sheet geared cable one side are and the matched arc in cable outer surface, the movable part is placed in probe body and wrap sheet, movable part can fit in cable surface, and can be along cable surface axial rolling.In the present invention, single unit system is package cable design, device volume is greatly reduced, bore is saved to space, reduces the incidence that gets stuck, simultaneously suitable for the comb of different voltages grade or push pipe pipeline, probe body and wrap sheet are arc, can be bonded cable surface, and then can be with cable sheath damage in insulation point contact, as movable part is along cable surface rolls forward, and then determine the insulating sheath breakpoint of pipeline inner cable.
Description
Technical field
The present invention relates to electric line service technique fields, determine more particularly to a kind of novel cable insulating sheath failure
Position probe and positioning device.
Background technology
The insulation of cable sheath is most important to the normal operation for ensureing cable.Cable sheath insulation fault refers to cable
There is breakage failure in sheath.Cable sheath insulation fault location refers to determine the breaking point of cable sheath.Cable sheath insulation event
Barrier positioning is the key that repair cable sheath breaking point, generally using high-voltage pulse-step voltage method, by cable metal
Sheath apply high-voltage pulse current, high-voltage pulse current by cable sheath breaking point to the earth generate leakage, and generate by
Weak oriented electric-force gradient is arrived by force, and step voltage detection device is recycled to measure the breakage that electric field peak is cable sheath
Point.Wherein, when step voltage refers to that earth fault occurs for electrical equipment, enter Potential distribution area row around place in earth current
The people walked, the voltage between bipod.
At present, overhead cabling method generally has cable duct laying, directly buried installation, the laying of slot box, comb laying, push pipe laying
With cable tunnel laying etc. various ways.For cable duct laying, directly buried installation and the laying of slot box, using two root longs about 50cm's
The step voltage detection device of metal probe and sensitive galvanometer composition can effectively carry out being accurately positioned cable sheath insulation event
Barrier.However traditional step voltage test method lays in comb, is difficult to navigate to breaking point position in push pipe system of laying, one
Aspect is the insulating effect due to comb or push pipe, and the step voltage that pulse current generates can not reach ground, and metal probe exists
Ground can not detect signal, be on the other hand due to metal probe limited length, can not depth enter comb or push pipe with
Breaking point of the positioning in deep place in cable tube, and metal probe cannot be bonded cable well in push pipe or comb
Surface there are problems that breaking point can not be accurately positioned and time-consuming.
In existing technology, there are a kind of cable sheath insulation fault location probes, can be laid in comb, push pipe laying
Breaking point position is navigated in mode, but overall volume is excessive, occupies a large amount of bores to space, once it is met in pipe
More sandstone, the easy situation that gets stuck of the device, once device gets stuck and can not exit, device is left permanently in pipe,
By one of hidden danger as influence cable running safety.
Invention content
The present invention provides a kind of novel cable insulating sheath fault location probe and positioning devices, solve existing apparatus
The problem of overall volume is excessive.
To solve the above problems, the present invention provides following technical schemes：
A kind of novel cable insulating sheath fault location probe, which is characterized in that including：Probe body, wrap sheet and movable part,
The wrap sheet is rotatably connected with probe body, and the probe body and wrap sheet geared cable one side are and cable outer surface
Matched arc, the movable part are placed in probe body and wrap sheet, and movable part can fit in cable surface, and can prolong cable
Surface axial rolling.
In the present invention, single unit system is package cable design, greatly reduces device volume, saves bore to space,
Reduction is got stuck incidence, while suitable for the comb of different voltages grade or push pipe pipeline, and probe body and wrap sheet are arc,
Matched with cable surface, so can with cable sheath damage in insulation point contact, as movable part is along cable surface rolls forward,
And then determine the insulating sheath breaking point of pipeline inner cable.
Preferably, the wrap sheet is two, being connected to the probe by first rotating shaft, the second shaft respectively leads
Body, two wrap sheets of setting can preferably be fitted in cable surface.
Further, novel cable insulating sheath fault location probe is further included positioned at the probe body and described
Elastic component between wrap sheet, the elastic component are set to first rotating shaft, inside the second shaft, and one end is connected to the probe master
Body, the other end are connected to the wrap sheet, the wrap sheet are made to be shunk to the probe body cambered surface center of circle, by installing elastic portion additional
Part can make the utility model cable sheath insulation fault location probe more preferable to the fitting effect of cable.
Preferably, the movable part is multiple Metal Contact Rollers.Further, the Metal Contact Rollers are distributed in the probe
In main body and wrap sheet, make novel cable insulating sheath fault location probe that can smoothly prolong cable movement.
Preferably, poling can be connected by being provided in the probe body of the novel cable insulating sheath fault location probe
Part wears pipe connector, and then the movement that the novel cable insulating sheath fault location can be controlled to pop one's head in by poling part.
A kind of cable sheath insulation fault location device, which is characterized in that including inspection flow device, poling part group, conducting wire and
Probe group, the probe group include the first probe and the second probe, and the first probe and the second probe are exhausted for above-mentioned cable sheath
Reason hinder positioning probe, the poling part group include the first poling part and the second poling part, one end of the first poling part with
First probe connection, one end of the second poling part are connected with the second probe, the other end dew of the first poling part and the second poling part
Outside for cable channel, it is described inspection flow device be located at outside the cable channel, and it is described examine flow device positive and negative anodes pass through it is described
Conducting wire connects respectively with two cable sheath insulation fault location probes.
The cable sheath insulation fault location device, cable sheath insulation fault location probe can enter in pipeline and move
It moves to different depth in pipe.Two cable sheath insulation fault location probes examine flow device positioned at two different locations of cable
The data such as electric current change and the size of current between two different locations are detected, so that it is determined that cable sheath insulation fault location
Whether probe position is breaking point.
Further, adjustment channel is provided on the second probe of the cable sheath insulation fault location device, adjusted
Channel runs through the second probe main body, and the first poling part passes through the poling popped one's head in after the adjustment channel on the second probe with first
Part interface connects, and can during the work time, adjust the distance of the first probe and the second probe.
Preferably, on the novel cable insulating sheath fault location probe of the cable sheath insulation fault location device
Image-forming component is provided with, the image-forming component is set in the probe body of first probe.Image-forming component is used to obtain electricity
The image on cable surface, and then by the image feedback to external equipment, and then the more intuitively position of determining breaking point and property.
Compared with prior art, the present invention has following technique effect：
The utility model cable sheath insulation fault location probe substantially reduces radial direction volume, and Metal Contact Rollers are before cable surface rolling
Into, avoid existing apparatus because overall volume is excessive, occupy a large amount of bores to space so that easily the situation of getting stuck ask
Topic, so as to improve the efficiency of positioning breaking point.In addition, Metal Contact Rollers are rolled in cable surface, be conducive to reduce new structure
Cable sheath insulation fault location is popped one's head in when moving in the duct and the friction of cable sheath；And can during the work time,
The distance of the second probe, improves positioning accuracy before adjusting.
Description of the drawings
Fig. 1 is the structure chart of the cable sheath insulation fault location device of an embodiment；
Fig. 2 is that the novel cable insulating sheath fault location probe first of cable sheath insulation fault location device shown in Fig. 1 is visited
The structure diagram of head；
Fig. 3 is that the novel cable insulating sheath fault location probe second of cable sheath insulation fault location device shown in Fig. 1 is visited
The structure diagram of head；
Fig. 4 is that the novel cable insulating sheath fault location probe of cable sheath insulation fault location device shown in Fig. 1 uses shape
State figure；
In figure：10- novel cable insulating sheath fault location probe groups；20- poling part groups；30- conducting wires；40- examines flow device；
11- probe bodies；12- wrap sheets；13- movable parts；14- first rotating shafts；15 second shafts；16- wears pipe connector；17- is adjusted
Channel；18- image-forming components；21- the first poling parts；22- the second poling parts.
Specific embodiment
The present invention is further illustrated With reference to embodiment.Wherein, attached drawing only for illustration,
What is represented is only schematic diagram rather than pictorial diagram, it is impossible to be interpreted as the limitation to this patent；In order to which the reality of the present invention is better described
Mode is applied, the certain components of attached drawing have omission, zoom in or out, and do not represent the size of actual product；To people in the art
For member, the omitting of some known structures and their instructions in the attached drawings are understandable.
With reference to Fig. 2 and Fig. 3, the novel cable insulating sheath fault location probe 10 of this preferred embodiment includes probe body
11st, wrap sheet 12 and movable part 13, the wrap sheet 12 are rotatably connected with probe body 11, the probe body 11 and package
12 geared cable of piece one side is to be placed in probe body 11 and wrap sheet 12 with the matched arc in cable outer surface, the movable part 13
On, movable part 13 can fit in cable surface, and can be along cable surface axial rolling.
In the present embodiment, single unit system is package cable design, greatly reduces device volume, saves bore to sky
Between, the incidence that gets stuck is reduced, while be suitable for the comb of different voltages grade or push pipe pipeline, probe body 11 and wrap sheet 12
For arc, cable surface can be bonded, so can with cable sheath damage in insulation point contact, as movable part 13 is along cable surface
Rolls forward, and then determine the insulating sheath breaking point of pipeline inner cable.
Specifically, wrap sheet 12 described in the present embodiment is two, connected respectively by first rotating shaft 14, the second shaft 15
In the probe body 11, two wrap sheets 12 of setting can closely be fitted in cable surface.
Specifically, probe body 11 described in the present embodiment states wrap sheet 12 equipped with elastic component（Diagram does not mark）, it is described
Elastic component is set to first turn and takes out inside the 14, second shaft 15, and one end is connected to the probe body 11, and the other end is connected to institute
Wrap sheet 12 is stated, the wrap sheet 12 is made to be shunk to the 11 cambered surface center of circle of probe body, by installing elastomeric element additional, this can be made new
The fitting effect of type cable sheath insulation fault location 10 pairs of cables of probe is more preferable.In the present embodiment, elastic component is spring, can
To understand, in other embodiments, elastic component can be other elements.
Specifically, movable part 13 described in the present embodiment is Metal Contact Rollers, quantity is 8, is divided into 11 He of probe body
On wrap sheet, novel cable insulating sheath fault location probe 10 is allow smoothly to prolong cable slip.It is appreciated that metal rolling
The quantity of wheel can be set as one or more according to actual needs.
Specifically, poling can be connected by being provided in the probe body 11 of the novel cable insulating sheath fault location probe
Part wears pipe connector 16, and then the shifting that the novel cable insulating sheath fault location can be controlled to pop one's head in by poling part
It is dynamic.
With reference to Fig. 1, the cable sheath insulation fault location device of this preferred embodiment, including the event of novel cable insulating sheath
Hinder positioning probe group 10, poling part group 20, conducting wire 30 and inspection flow device 40, for determining for the cable sheath insulation fault in pipeline
Position.
It is visited specifically, the cable sheath insulation fault location device probe group 10 of the present embodiment includes the first probe and second
Head, the first probe and the second probe are popped one's head in for above-mentioned novel cable insulating sheath fault location.
Specifically, poling part group 20 described in the cable sheath insulation fault location device of the present embodiment includes the first poling part
21 and the second poling part 22, one end of the first poling part 21 connect with the pipe connector 16 of wearing of the first probe, the second poling
One end of part 22 is connect with the pipe connector 16 of wearing of the second probe, and the other end of the first poling part 21 and the second poling part 22 exposes
In outside cable channel, the inspection flow device 40 is located at outside the cable channel, and the positive and negative anodes of the inspection flow device 40 pass through institute
Conducting wire 30 is stated to connect with two cable sheath insulation fault location probes respectively.
The cable sheath insulation fault location device, cable sheath insulation fault location probe can enter in pipeline and move
It moves to different depth in pipe.Two cable sheath insulation fault location probes examine flow device positioned at two different locations of cable
The data such as electric current change and the size of current between two different locations are detected, so that it is determined that cable sheath insulation fault location
Whether probe position is breaking point.
Specifically, being provided with adjustment channel 17 on second probe, adjustment channel 17 runs through the probe master of the second probe
Body 11, poling part 20 are connect after passing through the adjustment channel 17 on the second probe with the pipe connector 16 of wearing of the first probe, thus
In the course of work, the distance of the first probe 21 and the second probe 22 is adjusted.
Specifically, image-forming component 18 is provided on the novel cable insulating sheath fault location probe of the present embodiment, it is described
Image-forming component 18 is set in the probe body 11 of first probe.Image-forming component 18 is used to obtain the image of cable surface,
And then by the image feedback to external equipment, and then the more intuitively position of determining breaking point and property.It is appreciated that into pixel
Part 18 can be the elements such as photographic device, camera arrangement.
The length that first poling part 21 or the second poling part 22 enter pipeline is cable sheath damage in insulation point to nozzle
Distance.Enter the length of pipeline thus by the first poling part 21 of record or the second poling part 22, you can learn cable sheath
Damage in insulation point avoids metal probe and is identified without length distance, can not directly measure breaking point to nozzle to the distance of nozzle
Apart from the problem of.
Inspection flow device 40 be located at outside pipeline, and inspection flow device 40 positive and negative anodes by conducting wire 30 respectively with two cable sheaths
Insulation fault location probe connection.Such two cable sheath insulation fault locations probe is located at two different locations of cable,
The data such as electric current change and size of current that flow device 40 is detected between two different locations are examined, so that it is determined that novel cable protects
Whether 10 positions of layer insulation fault location probe are breaking point.
Specifically, inspection flow device 40 is galvanometer in the present embodiment.So pop one's head in cable sheath insulation fault location
During pipeline, change the position that breaking point is determined with size of current by the electric current for examining flow device 40.
The utility model cable sheath insulation fault location probe substantially reduces radial direction volume, and Metal Contact Rollers are rolled in cable surface
It is dynamic to advance, existing apparatus is avoided because overall volume is excessive, occupies a large amount of bores to space and then the easy feelings that get stuck
Condition problem, so as to improve the efficiency of positioning breaking point.In addition, Metal Contact Rollers are rolled in cable surface, be conducive to reduce novel
Structural cable insulating sheath fault location is popped one's head in when moving in the duct and the friction of cable sheath；It and can be in the course of work
In, the distance of the second probe, improves positioning accuracy before adjusting.
One embodiment of the present of invention is described in detail above, but the content is only the preferable implementation of the present invention
Example, it is impossible to be construed as limiting the practical range of the present invention.All all the changes and improvements done according to the present patent application range
Deng patent covering scope of the present invention should all be belonged to.
Claims (10)
1. a kind of novel cable insulating sheath fault location probe, which is characterized in that including：Probe body, wrap sheet and activity
Part, the wrap sheet are rotatably connected with probe body, the probe body and wrap sheet geared cable one side be with outside cable
The arc of surface matching, the movable part are placed in probe body and wrap sheet, and movable part can fit in cable surface, and can prolong
Cable surface axial rolling.
2. novel cable insulating sheath fault location according to claim 1 probe, which is characterized in that the wrap sheet is
Two, the probe body is connected to by first rotating shaft, the second shaft respectively.
3. novel cable insulating sheath fault location probe according to claim 2, which is characterized in that the novel cable
Insulating sheath fault location probe further includes the elastic component between the probe body and the wrap sheet, the elastic component
It is set to first rotating shaft, inside the second shaft, one end is connected to the probe body, and the other end is connected to the wrap sheet, makes
The wrap sheet is shunk to the probe body cambered surface center of circle.
4. the novel cable insulating sheath fault location probe according to claim 1 or 3, which is characterized in that the activity
Part is Metal Contact Rollers.
5. novel cable insulating sheath fault location probe according to claim 4, which is characterized in that the Metal Contact Rollers
It is multiple.
6. novel cable insulating sheath fault location probe according to claim 4, which is characterized in that the Metal Contact Rollers
It is distributed on the probe body and wrap sheet.
7. novel cable insulating sheath fault location probe according to claim 6, which is characterized in that the novel cable
Be provided in the probe body of insulating sheath fault location probe can connect poling part wear pipe connector.
8. a kind of cable sheath insulation fault location device, which is characterized in that including inspection flow device, poling part group, conducting wire and spy
Head group；
The probe group includes the first probe and the second probe, and the first probe and the second probe are novel described in claim 7
Cable sheath insulation fault location is popped one's head in；
The poling part group includes the first poling part and the second poling part, and one end of the first poling part connects with the first probe
It connects, one end of the second poling part is connected with the second probe, and the other end of the first poling part and the second poling part is exposed to cable tube
Outside road；
The inspection flow device is located at outside the cable channel, and the positive and negative anodes for examining flow device by the conducting wire respectively with two
A cable sheath insulation fault location probe connection.
9. cable sheath insulation fault location device according to claim 8, which is characterized in that the spy of second probe
Adjustment channel is provided in head main body, adjustment channel runs through the probe body of the second probe, and the first poling part passes through the second probe
On adjustment channel after with first probe pipe connector of wearing connect.
10. cable sheath insulation fault location device according to claim 8, which is characterized in that the novel cable shield
Image-forming component is provided on layer insulation fault location probe, the image-forming component is set to the probe body of first probe
On.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810322329.8A CN108254663A (en) | 2018-04-11 | 2018-04-11 | A kind of novel cable insulating sheath fault location probe and positioning device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810322329.8A CN108254663A (en) | 2018-04-11 | 2018-04-11 | A kind of novel cable insulating sheath fault location probe and positioning device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108254663A true CN108254663A (en) | 2018-07-06 |
Family
ID=62748165
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810322329.8A Pending CN108254663A (en) | 2018-04-11 | 2018-04-11 | A kind of novel cable insulating sheath fault location probe and positioning device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108254663A (en) |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202821285U (en) * | 2012-09-04 | 2013-03-27 | 无锡微奥科技有限公司 | Composite endoscopic imaging system based on optical coherence tomography |
| CN203037797U (en) * | 2013-02-07 | 2013-07-03 | 广州南方电力建设集团有限公司 | A distributed cable sheath fault measuring and discovering system |
| CN103235042A (en) * | 2013-03-29 | 2013-08-07 | 国家电网公司 | Pillar insulator creeping wave probe support |
| CN103913511A (en) * | 2013-11-06 | 2014-07-09 | 广州丰谱信息技术有限公司 | Steel rail flaw detection device and steel rail flaw detection method based on wireless split wheel edge-type probe arrays |
| CN204188747U (en) * | 2014-10-24 | 2015-03-04 | 广西电网有限责任公司柳州供电局 | Underground cable sheath position determination of fault device |
| CN105854180A (en) * | 2016-03-30 | 2016-08-17 | 上海交通大学 | Intracavitary probe |
| CN205562409U (en) * | 2016-02-19 | 2016-09-07 | 王明晟 | Novel overhead cable breakage detection drives car |
| CN206038825U (en) * | 2016-09-28 | 2017-03-22 | 广东电网有限责任公司珠海供电局 | Cable sheath insulation fault positioning probe and cable sheath insulation fault positioning device |
| CN206504791U (en) * | 2017-02-23 | 2017-09-19 | 昆明远通电线电缆制造有限公司 | A kind of sliding cable temperature detector |
| CN208013360U (en) * | 2018-04-11 | 2018-10-26 | 广东电网有限责任公司 | A kind of novel cable insulating sheath fault location probe and positioning device |
-
2018
- 2018-04-11 CN CN201810322329.8A patent/CN108254663A/en active Pending
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202821285U (en) * | 2012-09-04 | 2013-03-27 | 无锡微奥科技有限公司 | Composite endoscopic imaging system based on optical coherence tomography |
| CN203037797U (en) * | 2013-02-07 | 2013-07-03 | 广州南方电力建设集团有限公司 | A distributed cable sheath fault measuring and discovering system |
| CN103235042A (en) * | 2013-03-29 | 2013-08-07 | 国家电网公司 | Pillar insulator creeping wave probe support |
| CN103913511A (en) * | 2013-11-06 | 2014-07-09 | 广州丰谱信息技术有限公司 | Steel rail flaw detection device and steel rail flaw detection method based on wireless split wheel edge-type probe arrays |
| CN204188747U (en) * | 2014-10-24 | 2015-03-04 | 广西电网有限责任公司柳州供电局 | Underground cable sheath position determination of fault device |
| CN205562409U (en) * | 2016-02-19 | 2016-09-07 | 王明晟 | Novel overhead cable breakage detection drives car |
| CN105854180A (en) * | 2016-03-30 | 2016-08-17 | 上海交通大学 | Intracavitary probe |
| CN206038825U (en) * | 2016-09-28 | 2017-03-22 | 广东电网有限责任公司珠海供电局 | Cable sheath insulation fault positioning probe and cable sheath insulation fault positioning device |
| CN206504791U (en) * | 2017-02-23 | 2017-09-19 | 昆明远通电线电缆制造有限公司 | A kind of sliding cable temperature detector |
| CN208013360U (en) * | 2018-04-11 | 2018-10-26 | 广东电网有限责任公司 | A kind of novel cable insulating sheath fault location probe and positioning device |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US3096478A (en) | Apparatus with conductive gas electrodes for detecting non-uniformity in electrically insulating and electrically semi-conducting materials | |
| CN104678257B (en) | A kind of pinpoint method of high voltage single-core cable protective layer failure | |
| JPH0344674B2 (en) | ||
| CN208013360U (en) | A kind of novel cable insulating sheath fault location probe and positioning device | |
| KR20150092735A (en) | Mobile apparatus for locating the commercial voltage charged leaking source using wheel-typed electrode | |
| CN109782046B (en) | Method and system for measuring polarization potential of buried metal pipeline | |
| CN110006383A (en) | A kind of monitoring device suitable for landslide depth big displacement | |
| CN111579851B (en) | Buffer layer ablation current live detection system and method based on magnetic field effect | |
| DE102010061606A1 (en) | High-voltage fitting and method for detecting partial discharges in high-voltage fittings | |
| CN108254663A (en) | A kind of novel cable insulating sheath fault location probe and positioning device | |
| CN102971637A (en) | Method of locating an internal arc in a gas insulated line and associated device | |
| Suwanasi et al. | Investigation on partial discharge of power cable termination defects using high frequency current transformer | |
| CN201765876U (en) | Novel built-in fiber temperature measuring high-voltage crosslinked cable | |
| JPH02171649A (en) | Method and apparatus for detecting defect of insulated cable | |
| CN104614644A (en) | High-voltage overhead transmission line icing diagnosis method | |
| Suzuki et al. | Correlation between space charge distribution and water-tree location in aged XLPE cable | |
| CN204188747U (en) | Underground cable sheath position determination of fault device | |
| CN110977926A (en) | Partial discharge positioning method, system and medium for cable tunnel inspection robot | |
| KR102451712B1 (en) | Protecting tube for distribution line in underground | |
| CN206038825U (en) | Cable sheath insulation fault positioning probe and cable sheath insulation fault positioning device | |
| Kone et al. | Experimental investigation of internal defect detection of a 69-kV composite insulator | |
| CN113555821A (en) | Cable laying multipoint speed uniformity acquisition and monitoring system | |
| CN108828408B (en) | Device and method for nondestructively measuring buried skin effect electric tracing high-resistance grounding fault | |
| JP2014163914A (en) | Accident point orientation device | |
| KR20230029110A (en) | Insulated wire diagnostic device and emergency exit device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |