CN105337224A - Quick restoration method for middle and low voltage XLPE power cable terminal fault - Google Patents
Quick restoration method for middle and low voltage XLPE power cable terminal fault Download PDFInfo
- Publication number
- CN105337224A CN105337224A CN201510523803.XA CN201510523803A CN105337224A CN 105337224 A CN105337224 A CN 105337224A CN 201510523803 A CN201510523803 A CN 201510523803A CN 105337224 A CN105337224 A CN 105337224A
- Authority
- CN
- China
- Prior art keywords
- tube
- phase
- cable terminal
- protection tube
- fault
- 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
Landscapes
- Processing Of Terminals (AREA)
Abstract
The invention relates to a quick restoration method for a middle and low voltage XLPE power cable terminal fault, and the method comprises the steps: (1) cutting off a cable terminal fault phase, and preparing a single-phase cable terminal; (2) cutting a protection tube, a copper shield, and an external semi-conductive layer; (3) cutting an insulating layer, embedding a stress control tube, an insulating tube, and a protection tube; (4) connecting a conductor, wrapping the conductor with stress release glue and filling glue; (5) carrying out the thermal shrinkage of the stress control tube, an internal insulating tube, and an external insulating tube; (6) carrying out the wrapping of a shielding net, and recovering a grounding line; (7) carrying out the thermal shrinkage of the protection tube, and integrally wrapping the protection tube with a waterproof belt. Compared with the prior art, the method fills a gap of single-phase restoration of a single-phase fault cable with smaller damage, and can meet the demands of actual operation conditions. Compared with a conventional restoration method, the method can greatly improve the maintenance speed, reduces the power-off time, reduces the material consumption and manpower cost, and achieves a multi-purpose effect.
Description
Technical field
The invention belongs to transmission line technical field, especially a kind of mesolow XLPE power cable terminal fault fast repairing method.
Background technology
In 35kV cable fault, 75% is cable body and annex fault, and occur 23 altogether, single phase ground fault 17, accounts for 74%.So can fast processing cable termination single phase ground fault, just can reduce the emergency repair time of fault, significantly improve the power supply reliability of cable line.According to existing technology, after cable generation single-phase fault, when repairing cable, faulty component be amputated, again change one section of cable, more again make the cable joint of 2 groups of three-phases.So not only consume material is more, and installing cables joint, the more human cost of excavation joint hole needs, time cost.If repaired in urban district, and municipal administration interagency coordination breaks, and the links such as road compensates, broken road examination & approval also need a large amount of funds and time, even usually do not allow in some emphasis sections, traffic congestion area to carry out constructing between daytime.If can single-phase fault be handled well, ensure the prerequisite of running quality in links such as insulation, electric field, sealings under, only make single-phase transition joint, significantly will reduce the rehabilitation cost of cable, save material, reduce the repair time of cable.Urgent need provides mesolow XLPE power cable fast repairing method, but at present, does not also have above-mentioned restorative procedure in prior art.
Summary of the invention
The object of the invention is to overcome prior art deficiency, provide one in time, mesolow XLPE power cable terminal fault fast repairing method fast.
The technical solution used in the present invention is:
A kind of mesolow XLPE power cable terminal fault fast repairing method, the steps include:
(1) cable termination fault phase saw is removed, prepare a single-phase cable terminal;
(2) stripping protection tube, copper shield and outer semiconducting layer;
(3) stripping insulating barrier, is inserted in stress control tube, insulated tube, protection tube;
(4) bonding conductor, holds stress and discongests glue, fills glue;
(5) shrinkage stress control valve, external insulation pipe;
(6) hold gauze screen, recover earth connection;
(7) pyrocondensation protection tube, overall wrapped water blocking tape.
Advantage of the present invention and good effect are:
Compared with prior art, the present invention has filled up single-phase fault and has damaged the blank that less cable carries out single-phase reparation, designed mesolow three core XLPE power cable terminal single-phase fault fast repairing method can meet actual operating mode, make it significantly to improve repairing speed than restorative procedure before, reduce interruption duration, material consumption and human cost, reach the effect of " the many carvings of an arrow ".
Embodiment
Below by embodiment, the invention will be further described, and following examples are descriptive, is not determinate, can not limit protection scope of the present invention with this.
A kind of mesolow XLPE power cable terminal fault fast repairing method, the steps include:
1) cable termination fault phase saw is removed, prepare a single-phase cable terminal
Make a single-phase cable termination according to annex instruction for mounting, the remainder pyrocondensation weather protection of pipe pipe of single-phase cable, prepare to dock with fault phase.
2) stripping protection tube, copper shield and outer semiconducting layer
At joint both sides cable, divest copper shield and the outer semiconducting layer of each phase, copper shield exposes 70mm.
3) stripping insulating barrier, is inserted in stress control tube, insulated tube, protection tube
Divest core overhang insulation body, length K is that 1/2nd of tube connector length adds 5mm.The long end of two end cables is inserted in one group of external insulation pipe and stress control tube.
4) bonding conductor, holds stress and discongests glue, fills glue
Core inserted tube connector and crimps, with the burr on 100 order coarse sandpaper polishing adapter surfaces, avoiding metal fillings to fall in insulation.Clean core surface from outer semiconducting layer fracture, after to be cleaned dose of volatilization, wrapped filling glue in conductor adapter, fill glue and put up both sides and to insulate each 5mm, wrapped rear diameter is slightly larger than insulated wire cores external diameter.Discongest glue with stress the step of outer semiconducting layer and core insulation position is filled and led up, be coated with one deck silicone grease cream at surface of insulating layer and filling glue surface uniform, avoid being coated on semi-conductive layer.
5) shrinkage stress control valve, external insulation pipe
Be inserted in stress control tube, be pulled to joint centre position, heating fixed stress control valve.At the wrapped fluid sealant in stress control tube two ends, cover and answer keyholed back plate two ends 10mm scope.Then won over by interior insulated tube, stress control tube and fluid sealant should cover by interior insulated tube completely, shrink from the middle to both ends.At the wrapped fluid sealant in interior insulated tube two ends, insulated tube two ends 10mm scope in covering.Again external insulation pipe is pulled to centre position, shrinks from the middle to both ends, outside the wrapped waterproof gasket cement in insulated tube two ends, insulated tube two ends 10mm scope in covering.
6) hold gauze screen, recover earth connection
Wrapped copper mesh band, to connect the copper shield on both sides, keeps 50% put up time wrapped, covers each 25mm scope in screen two ends.With constant force spring circle, the two ends of copper mesh band are fixed on copper shield together with ground connection copper strips.On constant force spring circle, wrapped PVC band covers whole sharp edge and burr.
7) pyrocondensation protection tube, overall wrapped water blocking tape
Will the wrapped fluid sealant in covering cable two ends by weather protection tube, weather protection tube is pulled to centre position, shrinks from the middle to both ends, the wrapped PVC adhesive waterproof tape at protection tube two ends.Again with certain brand 2228 adhesive waterproof tape by overall for protection tube looping, wide 30mm, totally 3 layers.
Although disclose embodiments of the invention for the purpose of illustration, but it will be appreciated by those skilled in the art that: in the spirit and scope not departing from the present invention and claims, various replacement, change and amendment are all possible, therefore, scope of the present invention is not limited to the content disclosed in embodiment.
Claims (1)
1. a mesolow XLPE power cable terminal fault fast repairing method, is characterized in that: the steps include:
(1) cable termination fault phase saw is removed, prepare a single-phase cable terminal;
(2) stripping protection tube, copper shield and outer semiconducting layer;
(3) stripping insulating barrier, is inserted in stress control tube, insulated tube, protection tube;
(4) bonding conductor, holds stress and discongests glue, fills glue;
(5) shrinkage stress control valve, external insulation pipe;
(6) hold gauze screen, recover earth connection;
(7) pyrocondensation protection tube, overall wrapped water blocking tape.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510523803.XA CN105337224A (en) | 2015-08-24 | 2015-08-24 | Quick restoration method for middle and low voltage XLPE power cable terminal fault |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510523803.XA CN105337224A (en) | 2015-08-24 | 2015-08-24 | Quick restoration method for middle and low voltage XLPE power cable terminal fault |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105337224A true CN105337224A (en) | 2016-02-17 |
Family
ID=55287599
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510523803.XA Pending CN105337224A (en) | 2015-08-24 | 2015-08-24 | Quick restoration method for middle and low voltage XLPE power cable terminal fault |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105337224A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106384977A (en) * | 2016-09-19 | 2017-02-08 | 国网天津市电力公司 | Repair method of single-phase fault of cross-linked polyethylene cable |
| CN106451226A (en) * | 2016-12-23 | 2017-02-22 | 四川省达州钢铁集团有限责任公司 | Processing method of cracking cable |
| CN106785808A (en) * | 2016-11-29 | 2017-05-31 | 中国电力科学研究院 | Cold-contraction type stress cast cable termination grip force reinforcement means |
| CN108631222A (en) * | 2018-03-19 | 2018-10-09 | 柳州钢铁股份有限公司 | Zinc-Oxide Arrester lead cracking restorative procedure |
| CN112467638A (en) * | 2020-10-10 | 2021-03-09 | 西北水利水电工程有限责任公司 | Method for rapidly repairing damage of buried cable |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101728792A (en) * | 2010-01-21 | 2010-06-09 | 四川大学 | Electrified repair device for cross-inked polyethylene power cable and electrified repair method thereof |
| CN102709866A (en) * | 2012-06-15 | 2012-10-03 | 甘肃省电力公司刘家峡水电厂 | Medium-voltage crosslinking polyethylene insulation stress cone cable terminal and repair method |
-
2015
- 2015-08-24 CN CN201510523803.XA patent/CN105337224A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101728792A (en) * | 2010-01-21 | 2010-06-09 | 四川大学 | Electrified repair device for cross-inked polyethylene power cable and electrified repair method thereof |
| CN102709866A (en) * | 2012-06-15 | 2012-10-03 | 甘肃省电力公司刘家峡水电厂 | Medium-voltage crosslinking polyethylene insulation stress cone cable terminal and repair method |
Non-Patent Citations (1)
| Title |
|---|
| 冯潇楠: "10kVXLPE电缆单相故障快速修复研究", 《中国优秀硕士学位论文全文数据库 工程科技Ⅱ辑》 * |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106384977A (en) * | 2016-09-19 | 2017-02-08 | 国网天津市电力公司 | Repair method of single-phase fault of cross-linked polyethylene cable |
| CN106384977B (en) * | 2016-09-19 | 2018-07-13 | 国网天津市电力公司 | A kind of restorative procedure of twisted polyethylene cable single-phase fault |
| CN106785808A (en) * | 2016-11-29 | 2017-05-31 | 中国电力科学研究院 | Cold-contraction type stress cast cable termination grip force reinforcement means |
| CN106451226A (en) * | 2016-12-23 | 2017-02-22 | 四川省达州钢铁集团有限责任公司 | Processing method of cracking cable |
| CN108631222A (en) * | 2018-03-19 | 2018-10-09 | 柳州钢铁股份有限公司 | Zinc-Oxide Arrester lead cracking restorative procedure |
| CN112467638A (en) * | 2020-10-10 | 2021-03-09 | 西北水利水电工程有限责任公司 | Method for rapidly repairing damage of buried cable |
| CN112467638B (en) * | 2020-10-10 | 2022-04-01 | 西北水利水电工程有限责任公司 | Method for rapidly repairing damage of buried cable |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN203367959U (en) | A cable intermediate connector | |
| CN105337224A (en) | Quick restoration method for middle and low voltage XLPE power cable terminal fault | |
| CN109935981B (en) | 35 KV-220 kV pouring type cable body welded joint and manufacturing method thereof | |
| CN108598828B (en) | A kind of paired cable T connects formula installation method | |
| CN100467254C (en) | Making technique for welding middle joints of 66KV to 500KV crosslinked polyethylene insulated cables | |
| CN102570374B (en) | Connecting method of lengthened 10kV thermal shrinkable three-core cross-linked polyethylene cable intermediate joint | |
| CN105552791A (en) | Method for making 10KV heat-shrinkable three-core cross-linked polyethylene cable intermediate joint | |
| CN105281260A (en) | 35kV heat shrink power cable intermediate connector manufacturing technology method | |
| CN104967065A (en) | Copper hood type high voltage cold shrink intermediate joint production method based on inner electrode | |
| CN105262013A (en) | Insulation repair method for 10 kV high-voltage cable | |
| CN103151630B (en) | Quick plug cable junction device | |
| CN2874880Y (en) | Middle joint welding fitting for 66KV-500KV crosslink polyvinyl insulation power cable | |
| CN101465527A (en) | Method for first-aid repair of cable middle joint ground fault winding package | |
| CN109216966A (en) | A kind of recovery cable body structure jointing and its method | |
| CN108471092A (en) | The single-phase dry packet restorative procedure of high-tension cable | |
| CN203086092U (en) | Embedding type waterproof cable joint | |
| CN205882178U (en) | Power cable connector lug | |
| CN105207133A (en) | Manufacturing method for 10 kV contraction type power cable intermediate joint | |
| CN105207134A (en) | High-voltage cable joint manufacturing method by means of semiconductor coating | |
| CN208190228U (en) | A kind of crosslinked cable hot melting connector | |
| CN108683119A (en) | A kind of 10kV power cables single-phase fault restorative procedure | |
| CN105226582A (en) | 35kV pyrocondensation power cable terminal process for making | |
| CN209516490U (en) | A kind of cross-inked polyethylene power cable breakdown reparation structure | |
| CN203813397U (en) | Middle voltage power cable middle joint vertical water stopping device | |
| CN205231701U (en) | Shrinkage formula connects and structure is restoreed to compensating conductor cable |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20160217 |
|
| RJ01 | Rejection of invention patent application after publication |