CN108519543A - A kind of plug-in cable connector partial discharge sensor and its installation method - Google Patents
A kind of plug-in cable connector partial discharge sensor and its installation method Download PDFInfo
- Publication number
- CN108519543A CN108519543A CN201810180612.1A CN201810180612A CN108519543A CN 108519543 A CN108519543 A CN 108519543A CN 201810180612 A CN201810180612 A CN 201810180612A CN 108519543 A CN108519543 A CN 108519543A
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- China
- Prior art keywords
- membrane electrode
- partial discharge
- cable connector
- plug
- discharge sensor
- 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
- 238000000034 method Methods 0.000 title claims abstract description 11
- 238000009434 installation Methods 0.000 title claims abstract description 9
- 239000012528 membrane Substances 0.000 claims abstract description 37
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims abstract description 22
- 229910052802 copper Inorganic materials 0.000 claims abstract description 22
- 239000010949 copper Substances 0.000 claims abstract description 22
- 229910000679 solder Inorganic materials 0.000 claims abstract description 10
- 239000002184 metal Substances 0.000 claims description 8
- 229910052751 metal Inorganic materials 0.000 claims description 8
- 238000010276 construction Methods 0.000 abstract description 3
- 238000011900 installation process Methods 0.000 abstract description 3
- 238000009413 insulation Methods 0.000 description 8
- 238000010586 diagram Methods 0.000 description 5
- 238000001514 detection method Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000000644 propagated effect Effects 0.000 description 2
- 241000555268 Dendroides Species 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 239000002390 adhesive tape Substances 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 230000002421 anti-septic effect Effects 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000011889 copper foil Substances 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 244000005700 microbiome Species 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 150000002894 organic compounds Chemical class 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R1/00—Details of instruments or arrangements of the types included in groups G01R5/00 - G01R13/00 and G01R31/00
- G01R1/02—General constructional details
- G01R1/04—Housings; Supporting members; Arrangements of terminals
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Testing Relating To Insulation (AREA)
Abstract
A kind of plug-in cable connector partial discharge sensor of present invention offer and its installation method, the sensor include membrane electrode and signal wire；Signal wire is connect with the membrane electrode by solder joint, and signal wire includes that one end exposing copper shield braid over braid and core, core are connect with the membrane electrode by solder joint, can detect local discharge signal.Sensor structure is simple, and installation process does not destroy the shielding construction of cable, compared to external partial discharge sensor, there is preferable interference free performance.
Description
Technical field
The present invention relates to power cable Partial Discharge Detecting Technology fields, are connect more particularly, to a kind of plug-in cable
Head partial discharge sensor and its installation method.
Background technology
After cable puts into operation, long-term same soil, moisture, moisture contact, insulation are vulnerable to corrosion penetration, add cable
Local defect when manufacture or attachment are installed, in electricity, heat, mechanical external force, water, oil, organic compound, acid, alkali, salt and microorganism
Under effect, it occur frequently that the aging of insulation.And cable connector insulate due to being that field fabrication is completed and is often easier to ask
Topic, in actual operation, accident frequent occurrence, causes huge economic damage caused by due to cable connector generation explosion
It loses.Show with shelf depreciation, operating experience and research simultaneously during insulation ag(e)ing：Power cable partial discharge quantity with
Power cable insulation situation is closely related, and the variation of partial discharge quantity reflects the presence of potential risk to a certain extent, is quantitative
Analyze one of the effective ways of dendroid degradation.Therefore, the worlds such as home and abroad experts and scholars, IEC, IEEE and CIGRE
Electric power authoritative institution unanimously recommends Partial Discharge Detection as the best approach of power cable insulation status evaluation.Part is put at present
Electro-detection is being widely used, and measurement point is mainly cable connector.
Have much for the method for power cable Partial Discharge Detection both at home and abroad, traditional built-in partial discharge detection sensor
Generally directed to the cable connector of 110kV or more, local discharge signal is detected by capacitive coupling principle, there is centainly anti-interference
Ability and higher sensitivity.But it needs first to cut off the metallic shield of a part of cable body before installation sensor, after installing
It need to restore shielded layer with materials such as metal flanges, technique is vulnerable to the restriction of environment, it is difficult to ensure the machine of cable cover(ing) after restoring
Tool performance, sealing performance and antiseptic property may shorten insulation life, be unfavorable for the longtime running of cable.
Invention content
The present invention provides a kind of plug-in cable connector partial discharge sensor, and the sensor structure is simple, and installation process is not broken
The shielding construction of bad cable.
Another object of the present invention is to provide a kind of installation method of plug-in cable connector partial discharge sensor.
In order to reach above-mentioned technique effect, technical scheme is as follows：
A kind of plug-in cable connector partial discharge sensor, which is characterized in that including membrane electrode and signal wire；Signal wire with
The membrane electrode is connected by solder joint.
Further, the signal wire includes that copper shield braid over braid and core, core and the membrane electrode are exposed in one end
It is connected by solder joint.
Preferably, the signal wire is coaxial signal lines.
Preferably, the membrane electrode is sheet metal.
Further, the part that the signal wire core is not contacted with the membrane electrode coats an insulating layer.
A kind of installation method of plug-in cable connector partial discharge sensor, includes the following steps：
S1：The copper strip shielding of 10kV cables is unfolded, its outer semiconducting layer is exposed；
S2：By the membrane electrode tight of partial discharge sensor on the outer semiconducting layer of 10kV cables；
S3：Wrapped one layer of insulating tape, fully wrapped around by the membrane electrode outside membrane electrode；
S4：With the copper strip shieldings of 10kV cables by membrane electrode all standing, coaxial signal lines core is from 10kV cables
The wrapped gap of copper strip shielding in pass through；
S5：The copper shield braid over braid of coaxial signal lines and the copper strip shielding of 10kV cables are closely glued by insulating tape
It connects；
S6：Coaxial signal lines are pierced by from 10kV cable connector waterproof layers.
Compared with prior art, the advantageous effect of technical solution of the present invention is：
The present invention includes membrane electrode and signal wire；Signal wire is connect with the membrane electrode by solder joint, signal wire packet
It includes one end exposing copper shield braid over braid and core, core is connect with the membrane electrode by solder joint, can detect shelf depreciation
Signal.Sensor structure is simple, and installation process does not destroy the shielding construction of cable, compared to external partial discharge sensor, have compared with
Good interference free performance.
Description of the drawings
Fig. 1 is a kind of plug-in cable connector partial discharge sensor structure schematic diagram provided in an embodiment of the present invention；
Fig. 2 is plug-in cable connector partial discharge sensor mounting location schematic diagram provided in an embodiment of the present invention；
Fig. 3 is that plug-in cable connector partial discharge sensor provided in an embodiment of the present invention installs local detail schematic diagram；
Fig. 4 is the equivalent circuit diagram that plug-in type partial discharge sensor couples Partial discharge signal；
Wherein：1- membrane electrodes；2- coaxial signal lines；3- solder joints；4- copper shield braid over braids；5- insulating layers；6- believes
Number wire core；The prefabricated insulating part of 7- cable connectors；8- partial discharge measuring instruments；9- cable connector waterproof layers；10- cable bodies；11- is exhausted
Edge adhesive tape；12- metal mask tapes；13- cable outer semiconducting layers；14- cable insulations；15- power cable cores.
Specific implementation mode
The attached figures are only used for illustrative purposes and cannot be understood as limitating the patent；
In order to more preferably illustrate that the present embodiment, the certain components of attached drawing have omission, zoom in or out, actual product is not represented
Size；
To those skilled in the art, it is to be appreciated that certain known features and its explanation, which may be omitted, in attached drawing
's.
The following further describes the technical solution of the present invention with reference to the accompanying drawings and examples.
Embodiment 1
As shown in Figs. 1-2, the plug-in cable connector partial discharge sensor of the present embodiment, including membrane electrode 1 and one end dew
The coaxial signal lines 2 of copper shielding braid band 4 and core 6, signal wire core 6 are connect with membrane electrode 1 by solder joint 3,
An insulating layer 5 is coated in the part that signal wire core 6 is not contacted with membrane electrode 1, core and copper shield braid over braid is isolated.Its
In, for membrane electrode 1 using the copper foil of thickness 0.08mm, insulating layer 5 is PVC insulating tapes.
As shown in figure 3, the present embodiment by taking 10kV cable connectors as an example, introduces the installation of plug-in cable connector partial discharge sensor
Method includes the following steps：
Step 1：The copper strip shielding 12 of 10kV cables 10 is unfolded, outer semiconducting layer 13 is exposed；
Step 2：By 1 tight of membrane electrode of partial discharge sensor on cable outer semiconducting layer 13；
Step 3：Wrapped one layer of insulating tape 11, fully wrapped around by the membrane electrode 1 outside membrane electrode 1；
Step 4：The copper strip shielding 12 for restoring cable 10, by 1 all standing of membrane electrode, coaxial signal lines core 6 from
Copper strip shielding 12 passes through in wrapped gap；
Step 5：The copper shield braid over braid 4 and copper strip shielding 12 of coaxial signal lines 2 are closely viscous by insulating tape 11
It connects；
Step 6：Coaxial signal lines 2 are pierced by from cable connector waterproof layer 9.
The principle of the invention is：Partial Discharge Sources inside the prefabricated insulating part of cable connector 7 are considered as a pulse power,
It is propagated to both ends by cable core 15 and metal mask tape 12, and generates electromagnetic distu, generated and change over time in space
Electromagnetic wave.Since the coaxial configuration of cable 10 is considered as the waveguide of electromagnetic wave, this electromagnetic pulse can be passed along cable
It broadcasts.The impedance under power-frequency voltage of outer semiconducting layer 13 is much smaller than the impedance of insulating layer 14, then can be considered with metal mask tape 12 etc.
Current potential (i.e. ground potential), therefore membrane electrode 1 does not interfere with the insulation effect of power cable 10；Under partial discharge high frequency condition, partly lead outside
The impedance of electric layer 13 and 14 impedance of insulating layer are comparable, between the membrane electrode 1 and metal mask tape 12 on 13 surface of outer semiconducting layer
Potential difference can be formed, to detect partial discharge voltage signal.
Fig. 4 couples the equivalent circuit diagram of Partial discharge signal for plug-in type partial discharge sensor, and C1 is membrane electrode 1 and cable core in figure
Capacitance between 15, capacitances of the C2 between membrane electrode 1 and metal mask tape 12, Ls are coaxial signal lines core 6
Inductance, ZL are the internal impedance of partial discharge measuring instrument 8, and Z01, Z02 are the characteristic impedance of cable 10.Shelf depreciation is generated at cable A
When, pulse signal can be propagated axially, will produce radial current when reaching B points, to generate voltage, the both ends ZL at the both ends OC
Voltage Uo is the voltage that partial discharge measuring instrument 8 is detected.
The same or similar label correspond to the same or similar components；
Position relationship described in attached drawing is used to only for illustration, should not be understood as the limitation to this patent；
Obviously, the above embodiment of the present invention be only to clearly illustrate example of the present invention, and not be pair
The restriction of embodiments of the present invention.For those of ordinary skill in the art, may be used also on the basis of the above description
To make other variations or changes in different ways.There is no necessity and possibility to exhaust all the enbodiments.It is all this
All any modification, equivalent and improvement etc., should be included in the claims in the present invention made by within the spirit and principle of invention
Protection domain within.
Claims (6)
1. a kind of plug-in cable connector partial discharge sensor, which is characterized in that including membrane electrode (1) and signal wire (2)；Signal
Line (2) is connect with the membrane electrode (1) by solder joint (3).
2. plug-in cable connector partial discharge sensor according to claim 1, which is characterized in that signal wire (2) packet
It includes one end exposing copper shield braid over braid (4) and core (6), core (6) is connect with the membrane electrode (1) by solder joint (3).
3. plug-in cable connector partial discharge sensor according to claim 2, which is characterized in that the signal wire (2) is
Coaxial signal lines.
4. plug-in cable connector partial discharge sensor according to claim 3, which is characterized in that the membrane electrode (1)
For sheet metal.
5. plug-in cable connector partial discharge sensor according to claim 4, which is characterized in that the signal wire core
(6) part not contacted with the membrane electrode (1) coats an insulating layer (5).
6. a kind of installation method of plug-in cable connector partial discharge sensor as described in right will go 5, which is characterized in that including
Following steps：
S1：The copper strip shielding of 10kV cables is unfolded, its outer semiconducting layer is exposed；
S2：By membrane electrode (1) tight of partial discharge sensor on the outer semiconducting layer of 10kV cables；
S3：Wrapped one layer of insulating tape outside membrane electrode (1), the membrane electrode (1) is fully wrapped around；
S4：With the copper strip shielding of 10kV cables by membrane electrode (1) all standing, coaxial signal lines core (6) is electric from 10kV
The copper strip shielding of cable passes through in wrapped gap；
S5：The copper shield braid over braid (4) of coaxial signal lines (2) and the copper strip shielding of 10kV cables are close by insulating tape
Bonding；
S6：Coaxial signal lines (2) are pierced by from 10kV cable connector waterproof layers.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810180612.1A CN108519543A (en) | 2018-03-05 | 2018-03-05 | A kind of plug-in cable connector partial discharge sensor and its installation method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810180612.1A CN108519543A (en) | 2018-03-05 | 2018-03-05 | A kind of plug-in cable connector partial discharge sensor and its installation method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108519543A true CN108519543A (en) | 2018-09-11 |
Family
ID=63433685
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810180612.1A Pending CN108519543A (en) | 2018-03-05 | 2018-03-05 | A kind of plug-in cable connector partial discharge sensor and its installation method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108519543A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109490584A (en) * | 2018-10-16 | 2019-03-19 | 闽江学院 | Disk-shaped unscrewing mechanism and partial discharge detection device |
| CN110568230A (en) * | 2019-09-27 | 2019-12-13 | 山东达驰阿尔发电气有限公司 | Method for mounting partial discharge sensor in isolated-phase enclosed bus |
| CN110707653A (en) * | 2019-09-30 | 2020-01-17 | 南方电网科学研究院有限责任公司 | High-voltage cable insulation joint with built-in capacitive electrode |
| CN111679169A (en) * | 2020-06-28 | 2020-09-18 | 广东电网有限责任公司广州供电局 | Cable partial discharge detection device and method |
Citations (7)
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|---|---|---|---|---|
| JPH085700A (en) * | 1994-06-16 | 1996-01-12 | Fujikura Ltd | Partial discharge measuring method at common joint of power cable |
| JPH085697A (en) * | 1994-06-16 | 1996-01-12 | Fujikura Ltd | Method for fixing foil electrode for measuring partial discharge to insulating joint power cable |
| JP2007110831A (en) * | 2005-10-13 | 2007-04-26 | Tokyo Electric Power Co Inc:The | Joint for power cable |
| CN101545923A (en) * | 2009-03-25 | 2009-09-30 | 北京兴迪仪器有限责任公司 | Built-in local discharge sensor |
| DE102011079935A1 (en) * | 2011-07-27 | 2013-01-31 | Tyco Electronics Raychem Gmbh | Device for monitoring failure of connector of high-voltage cable sleeve utilized to connect two high-voltage cables for energy transmission, has transmitting and receiving unit for sending and receiving data over wireless communication link |
| CN106124940A (en) * | 2016-06-14 | 2016-11-16 | 国网北京市电力公司 | Submarine cable device for detecting partial discharge signal and system |
| CN207924074U (en) * | 2018-03-05 | 2018-09-28 | 广东电网有限责任公司佛山供电局 | A kind of plug-in cable connector partial discharge sensor |
-
2018
- 2018-03-05 CN CN201810180612.1A patent/CN108519543A/en active Pending
Patent Citations (7)
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|---|---|---|---|---|
| JPH085700A (en) * | 1994-06-16 | 1996-01-12 | Fujikura Ltd | Partial discharge measuring method at common joint of power cable |
| JPH085697A (en) * | 1994-06-16 | 1996-01-12 | Fujikura Ltd | Method for fixing foil electrode for measuring partial discharge to insulating joint power cable |
| JP2007110831A (en) * | 2005-10-13 | 2007-04-26 | Tokyo Electric Power Co Inc:The | Joint for power cable |
| CN101545923A (en) * | 2009-03-25 | 2009-09-30 | 北京兴迪仪器有限责任公司 | Built-in local discharge sensor |
| DE102011079935A1 (en) * | 2011-07-27 | 2013-01-31 | Tyco Electronics Raychem Gmbh | Device for monitoring failure of connector of high-voltage cable sleeve utilized to connect two high-voltage cables for energy transmission, has transmitting and receiving unit for sending and receiving data over wireless communication link |
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Non-Patent Citations (1)
| Title |
|---|
| 丁宇 等: "《网络管理与维护》", 冶金工业出版社, pages: 57 - 58 * |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109490584A (en) * | 2018-10-16 | 2019-03-19 | 闽江学院 | Disk-shaped unscrewing mechanism and partial discharge detection device |
| CN109490584B (en) * | 2018-10-16 | 2020-08-18 | 闽江学院 | Disk-shaped unscrewing mechanism and partial discharge detection device |
| CN110568230A (en) * | 2019-09-27 | 2019-12-13 | 山东达驰阿尔发电气有限公司 | Method for mounting partial discharge sensor in isolated-phase enclosed bus |
| CN110707653A (en) * | 2019-09-30 | 2020-01-17 | 南方电网科学研究院有限责任公司 | High-voltage cable insulation joint with built-in capacitive electrode |
| CN111679169A (en) * | 2020-06-28 | 2020-09-18 | 广东电网有限责任公司广州供电局 | Cable partial discharge detection device and method |
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| PB01 | Publication | ||
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Application publication date: 20180911 |