CN110492425A - A kind of indoor and outdoor terminal of novel high-pressure power cable - Google Patents
A kind of indoor and outdoor terminal of novel high-pressure power cable Download PDFInfo
- Publication number
- CN110492425A CN110492425A CN201910713715.4A CN201910713715A CN110492425A CN 110492425 A CN110492425 A CN 110492425A CN 201910713715 A CN201910713715 A CN 201910713715A CN 110492425 A CN110492425 A CN 110492425A
- Authority
- CN
- China
- Prior art keywords
- power cable
- indoor
- insulating coating
- novel high
- pressure power
- 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
- 239000011248 coating agent Substances 0.000 claims abstract description 29
- 238000000576 coating method Methods 0.000 claims abstract description 29
- 238000009413 insulation Methods 0.000 claims abstract description 26
- 238000009422 external insulation Methods 0.000 claims abstract description 15
- 239000004020 conductor Substances 0.000 claims abstract description 7
- 229920005989 resin Polymers 0.000 claims abstract description 6
- 239000011347 resin Substances 0.000 claims abstract description 6
- 239000000835 fiber Substances 0.000 claims abstract description 4
- 239000003292 glue Substances 0.000 claims abstract description 4
- 239000012212 insulator Substances 0.000 claims description 11
- 238000002347 injection Methods 0.000 claims description 5
- 239000007924 injection Substances 0.000 claims description 5
- 150000001875 compounds Chemical class 0.000 claims description 4
- 229920002379 silicone rubber Polymers 0.000 claims description 4
- 238000005259 measurement Methods 0.000 claims description 3
- 238000009434 installation Methods 0.000 claims description 2
- 238000004880 explosion Methods 0.000 abstract description 3
- 239000003990 capacitor Substances 0.000 description 6
- 238000009826 distribution Methods 0.000 description 6
- 230000005684 electric field Effects 0.000 description 5
- 230000005611 electricity Effects 0.000 description 4
- 239000003921 oil Substances 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 239000011810 insulating material Substances 0.000 description 3
- 239000007787 solid Substances 0.000 description 3
- 239000000243 solution Substances 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 2
- 238000005520 cutting process Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000011152 fibreglass Substances 0.000 description 2
- 238000002386 leaching Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 230000004888 barrier function Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 239000002305 electric material Substances 0.000 description 1
- 238000010292 electrical insulation Methods 0.000 description 1
- 239000003822 epoxy resin Substances 0.000 description 1
- 239000003365 glass fiber Substances 0.000 description 1
- 239000004519 grease Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 239000006210 lotion Substances 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 210000003101 oviduct Anatomy 0.000 description 1
- 229920000647 polyepoxide Polymers 0.000 description 1
- 229920001296 polysiloxane Polymers 0.000 description 1
- 229910052573 porcelain Inorganic materials 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
- H02G15/00—Cable fittings
- H02G15/02—Cable terminations
- H02G15/04—Cable-end sealings
- H02G15/043—Cable-end sealings with end caps, e.g. sleeve closed at one end
- H02G15/046—Cable-end sealings with end caps, e.g. sleeve closed at one end with bores or protruding portions allowing passage of cable conductors
Landscapes
- Insulators (AREA)
Abstract
The invention discloses a kind of indoor and outdoor terminals of novel high-pressure power cable, insulating coating includes the insulation core with capacitance plate and the external insulation body on the outside of the insulation core in the present invention, the insulation core soaks fiber sleeve using resin impregnated paper bushing or glue, forms a uniform coaxial electrode between the cable conductor in capacitance plate and power cable in insulation core.The present invention eliminates the stress cone being sleeved on cable and internal a large amount of insulating oil, has the characteristics that execute-in-place simplicity, excellent electrical properties, operational reliability are high compared with traditional structure；Especially its oil-free feature, even if insulation fault has occurred, will not set off an explosion the serious accidents such as burning, more suitable for using in city.
Description
Technical field:
The present invention relates to a kind of equipment for power transmission and distribution, more specifically refer to the indoor and outdoor terminal of high voltage power cable, are suitable for 110kV
Or more novel high-pressure power cable indoor and outdoor terminal.
Background technique:
Currently, the indoor and outdoor terminal of high voltage power cable is widely used in the electrical power trans mission/distribution system of city, for connecting high pressure
Power cable and overhead line.
Such as Fig. 4 and Fig. 5, the indoor and outdoor terminal of traditional high voltage power cable in high voltage power cable insulation shielding due to cutting
The power line at disconnected place compares concentration, and the general solution of the high voltage power cable of 110kV and 110kV or more is led using half
The oviduct of electric material production improves the field distribution of insulation shield cut-off part, structural shape and GIS lead collar
Pipe principle is consistent.
Dielectric inside GIS outlet casing tube is SF6 gas, with good insulation performance, thus above-mentioned knot
Structure substantially meets electric requirement.But the built-in electrical insulation medium of traditional cable termination should not generally use SF6 gas, can only use liquid
Insulating materials such as transformer oil or silicone grease, insulation performance is poor compared with SF6 gas, thus cable termination is used in high-tension electricity electricity
The way that assemblage stress is bored on cable improves field distribution.
Though this mode makes moderate progress to field distribution, to voltage levels especially 330kV and above
Product effect it is still not obvious enough.A large amount of test result and actual motion also demonstrate this point.Some cable terminations by
Shelf depreciation at long-term stress cone causes the cracking of insulating oil (transformer oil), and entire cable termination is caused to explode.
Summary of the invention:
The present invention is to provide a kind of indoor and outdoor of novel high-pressure power cable to solve the above-mentioned problems of the prior art
Terminal.
The technical solution adopted in the present invention has: a kind of indoor and outdoor terminal of novel high-pressure power cable, the indoor and outdoor
Terminal is used to connect high voltage power cable and overhead line, including connecting terminal, wire leading-out clamp, insulating coating, bottom plate, post insulator
Son and ground sleeve, the top of the insulating coating is connected with wire leading-out clamp and connecting terminal, and wire leading-out clamp is placed in insulating coating
Inside, the bottom end of insulating coating is connected with bottom plate, and support insulator and ground sleeve are connected on bottom plate, the connecting terminal with
Overhead line is connected, and the insulating coating includes having the insulation core of capacitance plate and outer on the outside of the insulation core
Insulate body, and the insulation core soaks fiber sleeve using resin impregnated paper bushing or glue, capacitance plate and electric power electricity in insulation core
A uniform coaxial electrode is formed between cable conductor in cable.
Further, the cross section of the capacitance plate is a step-like parallelogram sturcutre.
Further, the insulating coating is equipped with mounting flange, and zero screen and the cable in power cable of capacitance plate are led
Body is connected, and the end shield of capacitance plate is connected with mounting flange.
Further, the outer surface injection or suit silicon rubber umbrella skirt of the external insulation body.
Further, the outer surface installation insulator or compound inslation cylinder of the external insulation body.
Further, the outer wall of the insulating coating is equipped with measurement terminal.
Further, the top of the insulating coating is equipped with grading shield.
Further, the inside of external insulation sleeve body is filled with dielectric in the insulating coating.
The invention has the following beneficial effects:
The present invention eliminates the stress cone being sleeved on cable and internal a large amount of insulating oil, has compared with traditional structure
The high feature of execute-in-place simplicity, excellent electrical properties, operational reliability；Especially its oil-free feature, even if having occurred absolutely
Reason barrier, will not set off an explosion the serious accidents such as burning, more suitable for using in city.
Detailed description of the invention:
Fig. 1 is structure of the invention figure.
Fig. 2 is the structure chart of capacitance plate in the present invention.
Fig. 3 is the scaling figure of capacitance plate in the present invention.
Fig. 4 is outlet casing tube structural schematic diagram in the prior art.
Fig. 5 is indoor and outdoor terminal structure schematic diagram in the prior art.
Specific embodiment:
The present invention will be further described below with reference to the drawings.
Such as Fig. 1, a kind of indoor and outdoor terminal of novel high-pressure power cable of the present invention, indoor and outdoor terminal is used to connect high-voltage electricity
Power cable and overhead line, including connecting terminal 1, wire leading-out clamp 3, insulating coating 4, bottom plate 8, support insulator 9 and ground sleeve 10,
The top of insulating coating 4 is connected with wire leading-out clamp 3 and connecting terminal 1, and wire leading-out clamp 3 is placed in the inside of insulating coating 4, insulation
The bottom end of housing 4 is connected with bottom plate 8, and support insulator 9 and ground sleeve 10 are connected on bottom plate 8, connecting terminal 1 and overhead line phase
Connection.
Insulating coating 4 includes the insulation core with capacitance plate 6 and the external insulation sleeve on the outside of the insulation core
Using resin impregnated paper bushing (RIP) or glue leaching fiber sleeve (RIF) (other solid insulating sleeves also can be used in body 41, insulation core
Production).A uniform coaxial electrode is formed between capacitance plate 6 in insulation core and the cable conductor in power cable.
In conjunction with Fig. 2 and Fig. 3, the cross section of capacitance plate 6 is a step-like parallelogram sturcutre.
Insulating coating 4 is equipped with mounting flange, and zero screen of capacitance plate 6 is connected with the cable conductor in power cable, capacitor
The end shield of screen 6 is connected with mounting flange.The outer diameter of the internal diameter of external insulation body 41 and the cable for peeling crust and earth shield net off
Between have a lesser gap, this gap vacuumizes injection insulating paste or other insulating materials after assembling product sealing.
The outer surface of external insulation body 41 is injected or suit silicon rubber umbrella skirt.Alternatively, the outer surface of external insulation body 41
Insulator or compound inslation cylinder are installed.
To adapt to the intelligentized requirement of operation of power networks, insulating coating 4 can also be set for testing product partial discharge or as online
The measurement terminal 7 of monitoring.
The top of insulating coating 4 is equipped with grading shield 2, and grading shield 2 improves top electric field.
The inside of external insulation sleeve body 41 is filled with dielectric 5 in insulating coating 4.
The purpose of the invention patent is sought on the basis of above-mentioned background technique, with cross-cutting innovative thinking, if
Meter produces a kind of new structural cable termination, greatlys improve its operational reliability, thoroughly solves the above problems.
The purpose of the present invention is achieved through the following technical solutions:
1) the invention patent uses the principle of capacitor uniform electric field, with resin impregnated paper bushing (RIP) or glass reinforced plastic with capacitance plate
Casing (RIF) is instead of original insulating coating.Mounting flange and earth shield in the end shield of the capacitance plate of casing and outer set
Net connection, forms a uniform coaxial electrode between end shield and cable conductor, mounting flange and cable grounding are shielded screen
Cover except electric field, the capacitance of each electrode is essentially the same, according to etc. capacitor designs principle, it is inside and outside formed it is step-like flat
Row quadrilateral structure, due to the effect that capacitor uniformly divides, along the external insulation of housing and along cable insulation outer surface
The interior insulation of voltage all forces to press due to the effect of capacitor, forms substantially homogeneous voltage's distribiuting, improves insulating properties
Energy.
2) major insulation containing capacitance plate is solid insulator, can be the resin impregnated paper bushing of epoxy resin leaching insulating paper
(RIP), it is also possible to the glass reinforced plastic sleeve (RIF) of glass fiber winding, is possibly even the pour mass of other insulating materials.
3) in addition capacitance plate solid insulator housing can also can install porcelain additional with direct injection or suit silicon rubber umbrella skirt
Set or compound inslation cylinder etc. are used as external insulation.
4) cable for peeling crust and earth shield net off passes through the inner hole of casing, between have lesser gap, this gap exists
Injection insulating paste is vacuumized after assembling product sealing, this lotion not only has good electric property, is also less prone to leak, more will not
Combustion explosion.
5) the indoor and outdoor terminal of traditional structure, since come uniform inner electric field, thus it is outer to insulate using biggish stress cone
The internal diameter of set is larger, and weight also weighs；Insulating coating of the invention patent due to using capacitor screen, excellent uniform electric field
Distribution and excellent insulation performance, compact-sized, size is also smaller, thus overall weight is light, is readily transported and installs.
The above is only a preferred embodiment of the present invention, it is noted that for the ordinary skill people of the art
It for member, can also make several improvements without departing from the principle of the present invention, these improvement also should be regarded as of the invention
Protection scope.
Claims (8)
1. a kind of indoor and outdoor terminal of novel high-pressure power cable, the indoor and outdoor terminal is used to connect high voltage power cable and frame
Ceases to be busy, it is characterised in that: including connecting terminal (1), wire leading-out clamp (3), insulating coating (4), bottom plate (8), support insulator (9)
It is connected with the top of ground sleeve (10), the insulating coating (4) with wire leading-out clamp (3) and connecting terminal (1), and wire leading-out clamp
(3) it is placed in the inside of insulating coating (4), the bottom end of insulating coating (4) is connected with bottom plate (8), support insulator (9) and ground sleeve
(10) it is connected on bottom plate (8), the connecting terminal (1) is connected with overhead line, it is characterised in that: the insulating coating (4)
External insulation body (41) including the insulation core with capacitance plate (6) and on the outside of the insulation core, the insulation
Fuse soaks fiber sleeve using resin impregnated paper bushing or glue, the cable conductor in capacitance plate (6) and power cable in insulation core
Between formed a uniform coaxial electrode.
2. the indoor and outdoor terminal of novel high-pressure power cable as described in claim 1, it is characterised in that: the capacitance plate (6)
Cross section be a step-like parallelogram sturcutre.
3. the indoor and outdoor terminal of novel high-pressure power cable as described in claim 1, it is characterised in that: the insulating coating
(4) be equipped with mounting flange, zero screen of capacitance plate (6) is connected with the cable conductor in power cable, the end shield of capacitance plate (6) and
Mounting flange is connected.
4. the indoor and outdoor terminal of novel high-pressure power cable as described in claim 1, it is characterised in that: the external insulation body
(41) outer surface injection or suit silicon rubber umbrella skirt.
5. the indoor and outdoor terminal of novel high-pressure power cable as described in claim 1, it is characterised in that: the external insulation body
(41) outer surface installation insulator or compound inslation cylinder.
6. the indoor and outdoor terminal of novel high-pressure power cable as described in claim 1, it is characterised in that: the insulating coating
(4) outer wall is equipped with measurement terminal (7).
7. the indoor and outdoor terminal of novel high-pressure power cable as described in claim 1, it is characterised in that: the insulating coating
(4) top is equipped with grading shield (2).
8. the indoor and outdoor terminal of novel high-pressure power cable as described in claim 1, it is characterised in that: the insulating coating
(4) inside of external insulation sleeve body (41) is filled with dielectric (5) in.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910713715.4A CN110492425A (en) | 2019-08-02 | 2019-08-02 | A kind of indoor and outdoor terminal of novel high-pressure power cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910713715.4A CN110492425A (en) | 2019-08-02 | 2019-08-02 | A kind of indoor and outdoor terminal of novel high-pressure power cable |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110492425A true CN110492425A (en) | 2019-11-22 |
Family
ID=68549264
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910713715.4A Pending CN110492425A (en) | 2019-08-02 | 2019-08-02 | A kind of indoor and outdoor terminal of novel high-pressure power cable |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110492425A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110854789A (en) * | 2019-11-27 | 2020-02-28 | 玖安卡（江苏）智能电力科技有限公司 | Compound shell type outdoor terminal of 220kV cable |
| CN112787301A (en) * | 2020-03-15 | 2021-05-11 | 北京泛美雷特科技有限公司 | Fully-prefabricated dry-type capacitive cable terminal and manufacturing method thereof |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2582240Y (en) * | 2002-11-01 | 2003-10-22 | 许建国 | Dry, prefabricated and capacitance type cable terminal |
| JP2010016986A (en) * | 2008-07-03 | 2010-01-21 | Exsym Corp | Porcelain tube unit, aerial terminal-connecting section and method for assembling porcelain tube unit |
| CN101640402A (en) * | 2009-08-07 | 2010-02-03 | 广东长园吉斯安电气有限公司 | Dry-type cable terminal |
| CN103345990A (en) * | 2013-06-16 | 2013-10-09 | 中国科学院电工研究所 | Line outgoing casing pipe applied to high-pressure superconductivity electrical equipment |
| CN106486946A (en) * | 2016-12-26 | 2017-03-08 | 山东彼岸电力科技有限公司 | A kind of compound inslation immersion capacitive type wall bushing |
| CN210927054U (en) * | 2019-08-02 | 2020-07-03 | 南京智达电气设备有限公司 | Novel indoor and outdoor terminal of high-voltage power cable |
-
2019
- 2019-08-02 CN CN201910713715.4A patent/CN110492425A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2582240Y (en) * | 2002-11-01 | 2003-10-22 | 许建国 | Dry, prefabricated and capacitance type cable terminal |
| JP2010016986A (en) * | 2008-07-03 | 2010-01-21 | Exsym Corp | Porcelain tube unit, aerial terminal-connecting section and method for assembling porcelain tube unit |
| CN101640402A (en) * | 2009-08-07 | 2010-02-03 | 广东长园吉斯安电气有限公司 | Dry-type cable terminal |
| CN103345990A (en) * | 2013-06-16 | 2013-10-09 | 中国科学院电工研究所 | Line outgoing casing pipe applied to high-pressure superconductivity electrical equipment |
| CN106486946A (en) * | 2016-12-26 | 2017-03-08 | 山东彼岸电力科技有限公司 | A kind of compound inslation immersion capacitive type wall bushing |
| CN210927054U (en) * | 2019-08-02 | 2020-07-03 | 南京智达电气设备有限公司 | Novel indoor and outdoor terminal of high-voltage power cable |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110854789A (en) * | 2019-11-27 | 2020-02-28 | 玖安卡（江苏）智能电力科技有限公司 | Compound shell type outdoor terminal of 220kV cable |
| CN112787301A (en) * | 2020-03-15 | 2021-05-11 | 北京泛美雷特科技有限公司 | Fully-prefabricated dry-type capacitive cable terminal and manufacturing method thereof |
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