CN106159758B - Ring main unit, which does not have a power failure, accesses the servicing unit of cable - Google Patents
Ring main unit, which does not have a power failure, accesses the servicing unit of cable Download PDFInfo
- Publication number
- CN106159758B CN106159758B CN201610527737.8A CN201610527737A CN106159758B CN 106159758 B CN106159758 B CN 106159758B CN 201610527737 A CN201610527737 A CN 201610527737A CN 106159758 B CN106159758 B CN 106159758B
- Authority
- CN
- China
- Prior art keywords
- ring main
- main unit
- power failure
- front connector
- cable
- 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.)
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Links
- 238000009413 insulation Methods 0.000 claims abstract description 21
- 238000009434 installation Methods 0.000 claims abstract description 12
- 230000001681 protective effect Effects 0.000 claims abstract description 12
- 239000012774 insulation material Substances 0.000 claims abstract description 6
- 238000010276 construction Methods 0.000 abstract description 3
- 238000000034 method Methods 0.000 description 11
- 239000004020 conductor Substances 0.000 description 3
- TVEXGJYMHHTVKP-UHFFFAOYSA-N 6-oxabicyclo[3.2.1]oct-3-en-7-one Chemical compound C1C2C(=O)OC1C=CC2 TVEXGJYMHHTVKP-UHFFFAOYSA-N 0.000 description 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 235000006508 Nelumbo nucifera Nutrition 0.000 description 1
- 240000002853 Nelumbo nucifera Species 0.000 description 1
- 235000006510 Nelumbo pentapetala Nutrition 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000010606 normalization Methods 0.000 description 1
- 239000012780 transparent material Substances 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
- H02B3/00—Apparatus specially adapted for the manufacture, assembly, or maintenance of boards or switchgear
-
- 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
- H02G1/00—Methods or apparatus specially adapted for installing, maintaining, repairing or dismantling electric cables or lines
- H02G1/14—Methods or apparatus specially adapted for installing, maintaining, repairing or dismantling electric cables or lines for joining or terminating cables
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Power Engineering (AREA)
- Patch Boards (AREA)
Abstract
Do not have a power failure the invention discloses a kind of ring main unit and access the servicing unit of cable, in ring network cabinet body（2）Interior installation junction block（1）, junction block（1）Upper installation oversheath is the T-shaped front connector of all insulation material（5）, T-shaped front connector（5）Interior installation Binding post/stud（6）, run the No.1 binding post of cable（7）Pass through Binding post/stud（6）With junction block（1）Connect and pass through No.1 wiring nut（8）Compress；It is characterized in that：The servicing unit for the access that do not have a power failure is configured to ring main unit, described servicing unit includes the protective baffle plate of supplementary insulation and gap bridge mechanism two parts of auxiliary connection；The present invention is simple in construction, easy to operate, solves the problems, such as that the ring main unit of no standby spacing does not have a power failure and accesses bypass cable.
Description
Technical field
The present invention relates to the frock of bypass uninterrupted operation, especially a kind of ring main unit, which does not have a power failure, accesses the auxiliary dress of cable
Put.
Background technology
With the continuous development of urban distribution network, uninterrupted operation has become a kind of trend, the bypass of power system at present
Uninterrupted operation is more and more extended in cable run by overhead transmission line and relevant device, for cable run and ring
The work such as the service without power-off of net cabinet and replacing normalization.
Two kinds of operational methods are generally divided into currently for the service without power-off of ring main unit, one kind is born by adjusting circuit
Lotus, Awaiting Overhaul or the ring main unit load of replacing are soared by grid switching operation, its load carried is gone to his ring main unit, this
Kind operational method is adapted to loop grid or double voltage control, higher to distribution rack construction requirements, it is impossible to meet distribution branch
The job requirements of circuit；One kind be replaced temporarily by bypass equipment by bypass operation the ring main unit of Awaiting Overhaul or replacing to
Customer power supply, such a operational method are applied to various circuits, and job safety is efficient, is widelyd popularize.
The operation of distribution ring main unit is substituted temporarily using bypass equipment, if wanting to realize that user does not have a power failure completely, it is desirable to distribution
Ring main unit must possess standby spacing, and for the access of bypass cable, the access of bypass cable is by advance on standby spacing
The access socket that do not have a power failure of installation（Most distribution ring main units do not configure）It is directly connected to bypass cable, this method requirement
It must in advance be mounted with not have a power failure in distribution ring main unit and access socket, cost is higher；The access of bypass cable can also pass through elder generation
Standby spacing is powered off, bypass cable is accessed under power down mode, this method is low without particular/special requirement, cost to standby spacing
It is honest and clean, generally adopt this method.But for the ring main unit of no standby spacing, it is necessary to after the access bypass cable that first has a power failure, side
The follow-up service work of ring main unit can be carried out, the access for requiring in short-term to have a power failure twice in whole operation process for bypass cable with
Exit, can still influence power supply reliability.
For the ring main unit of no standby spacing, if thinking to access bypass cable in the energized state, difficulty essentially consists in：
1）The T-shaped front connector of ring main unit internal wiring in powered load carrying, in insulation and obturation state, takes T apart
The rear defence protecting cover of type front connector, then the distance between inner conductor and the external shielding layer of T-shaped front connector be less than 30mm, safe distance is not
It is enough, cause to climb electrical breakdown, cause line-to-ground fault.
2）With T-shaped front connector outer layer be designed as all insulation form if ring main unit is connected, bypass cable in access procedure,
For the conductor of connection in the terminals connection procedure with T-shaped front connector, the distance of conductor and ring network cabinet body is less than 80mm, leads
The operating distance of body and ring network cabinet body is inadequate, also results in earth fault.
3）Ring main unit cabinet insied width is generally 305mm, narrow space, and cabinet, which with binding post has insulating protection, isolates and ask
Topic.
The content of the invention
The purpose of the present invention is：The servicing unit that a kind of ring main unit does not have a power failure access cable, simple in construction, operation side are provided
Just, solve the problems, such as that the ring main unit of no standby spacing does not have a power failure and access bypass cable.
The present invention technical solution be：Junction block is installed in ring network cabinet body, installation oversheath is on junction block
The T-shaped front connector of all insulation material, the interior installation Binding post/stud of T-shaped front connector, the No.1 binding post for running cable pass through wiring
Stud is connected with junction block and compressed by No.1 wiring nut；It is characterized in that：The auxiliary for the access that do not have a power failure is configured to ring main unit
Device, described servicing unit include the protective baffle plate of supplementary insulation and gap bridge mechanism two parts of auxiliary connection；Described is auxiliary
Helping the protective baffle plate of insulation includes top plate and side plate, is provided with pilot hole on side plate, and the both sides of top plate are by lead through pilot hole
Respectively one block of side plate of installation, side plate is according to the interval width size of ring main unit by the guiding of lead to two Slideslips；Described
The gap bridge mechanism of auxiliary connection includes extension bar, No. two wiring nuts, No. three wiring nuts, insulation plug, No. two binding posts
With T-shaped rear joint, extension bar one end carries internal thread hole, and the extension bar other end is external screw thread stud, and extension bar one end passes through interior
Screwed hole is connected on the Binding post/stud in T-shaped front connector, and the other end of extension bar is protruded outside the rear end of T-shaped front connector, T-shaped
Rear joint accesses the rear end of T-shaped front connector, and No. two binding posts of bypass cable are connected to the external screw thread of the other end of extension bar
On stud, and compressed by No. two wiring nuts, No. three wiring nuts, insulation plug is arranged on the rear end of T-shaped rear joint.
Wherein, fixing line is installed on top plate.
Wherein, it is set with insulating sleeve outside extension bar.
Wherein, T-shaped front connector, shading ring is installed respectively in T-shaped rear joint.
It is an advantage of the invention that：
1st, insulating sleeve uses insulation transparent material, and internal diameter is identical with the external diameter of extension bar, and length is more than extension bar, lengthens
Bar is put into insulating sleeve and slided, extension bar with the Binding post/stud connection procedure of T-shaped front connector all the time by insulating sleeve with
Outside isolation；
2nd, side plate is put into according to the interval width size of ring main unit by the guiding of lead to two Slideslips, protective baffle plate
Top, is dielectrically separated from looped network cabinet inner top and both sides in ring main unit, and it is exhausted during T-shaped front connector to ensure that T-shaped rear joint is inserted
Edge distance；
3rd, shading ring is made using copper braid over braid, around the outer surface of T-shaped forward and backward joint, shading ring and ring network cabinet body
It is grounded after connection, eliminates the electric charge that T-shaped front connector and rear joint external protection coating accumulate when the later stage being powered and running；
4th, the external sheath layer of T-shaped front connector and T-shaped rear joint is all insulation structure, ensure with the insulation of external agency away from
From.
5th, the present invention utilizes the protection of the T-shaped front connector of all insulation formula, T-shaped rear joint, insulating protection baffle plate and insulating sleeve,
The insulating barrier stored charge of T-shaped front and rear joint is eliminated by shading ring, solves not have a power failure without the ring main unit of standby spacing and connects
Enter bypass cable problem, be ring main unit service without power-off and the new method changed.
Brief description of the drawings
Fig. 1 is the bypass cable access state figure of the present invention.
Fig. 2 is protective baffle plate schematic diagram.
Fig. 3 is insulating sleeve scheme of installation.
In figure：1 junction block；2 ring network cabinet bodies；3 protective baffle plates；4 shading rings；5 T-shaped front connectors；6 Binding post/studs；7 one
Number binding post；8 No.1 wiring nuts；9 extension bars；10 No. two wiring nuts；11 No. three wiring nuts；12 insulation plugs；13
No. two binding posts；14 T-shaped rear joints；15 fixing lines；301 top plates；302 side plates；303 leads；901 insulating sleeves.
Embodiment
As Figure 1-3, junction block 1 is installed in ring network cabinet body 2, it is all insulation material to install oversheath on junction block 1
The T-shaped front connector 5 of matter, the interior installation Binding post/stud 6 of T-shaped front connector 5, the No.1 binding post 7 for running cable pass through Binding post/stud 6
It is connected with junction block 1 and is compressed by No.1 wiring nut 8；It is characterized in that：The auxiliary dress for the access that do not have a power failure is configured to ring main unit
Put, described servicing unit includes the protective baffle plate of supplementary insulation and gap bridge mechanism two parts of auxiliary connection；Described auxiliary
The protective baffle plate 3 of insulation includes top plate 301 and side plate 302, is provided with pilot hole on side plate 302, the both sides of top plate 301 pass through guiding
Post 303 respectively installs one block of side plate 302 through pilot hole, and side plate 302 is according to the interval width size of ring main unit by lead 303
It is oriented to two Slideslips；The gap bridge mechanism of described auxiliary connection includes the wiring spiral shell of wiring nut 10, three of extension bar 9, two
Mother 11, insulation 12, No. two binding posts 13 of plug and T-shaped rear joint 14, the one end of extension bar 9 carry internal thread hole, and extension bar 9 is another
One end is external screw thread stud, and the one end of extension bar 9 is connected on the Binding post/stud 6 in T-shaped front connector 5 by internal thread hole, is lengthened
The other end of bar 9 is protruded outside the rear end of T-shaped front connector 5, and T-shaped rear joint 14 accesses the rear end of T-shaped front connector 5, bypass cable
No. two binding posts 13 other end that is connected to extension bar 9 external screw thread stud on, and pass through No. two wiring nuts 10, three
Wiring nut 11 compresses, and insulation plug 12 is arranged on the rear end of T-shaped rear joint 14.
Wherein, fixing line 15 is installed on top plate 301.
Wherein, insulating sleeve 901 is set with outside extension bar 9.
Wherein, T-shaped front connector 5, shading ring 4 is installed respectively in T-shaped rear joint 14.
The T-shaped front connector 5 that oversheath is all insulation material, fortune have been mounted with junction block 1 in operation ring main unit
The No.1 binding post 7 of row cable is connected by Binding post/stud 6 with junction block 1, and is compressed by No.1 wiring nut 8, before T-shaped
The rear end connection insulation plug of joint 5, is now ring main unit normal operating condition.
Do not have a power failure access ring main unit when：Ring main unit is first turned on, protective baffle plate 3 is put into the internal upper part of ring network cabinet body 2, side
Plate 302 makes its width and the width fits of ring network cabinet body 2 by the guiding of lead 303 to two Slideslips adjustment side plate 302；Its
The secondary fixing line 15 by top plate 301 is fixed；The shading ring dismantled in T-shaped front connector 5, finishes and is dielectrically separated from work；Then
The rear end cap of T-shaped front connector 5 is opened, exposes the Binding post/stud 6 in T-shaped front connector, because the oversheath of T-shaped front connector 5 is complete exhausted
Edge material, the insulating protection of Binding post/stud 6 and apart from enough are not in creepage phenomenon, extension bar 9 are put into insulating sleeve
In 901, the rear end that extension bar 9 is pushed into T-shaped front connector 5 with insulating sleeve 901 is connected with Binding post/stud 6；Then exit absolutely
Edge sleeve pipe 901, now outside one end T-shaped rear end of front connector 5 of protrusion of extension bar 9, because anti-bib is arranged at the top of ring network cabinet body 2
Plate 3, and the T-shaped front connector oversheath of surrounding is all insulation material, therefore be not in creepage phenomenon；Finally by T-shaped rear joint 14
The rear end of T-shaped front connector 5 is accessed, No. two binding posts 13 of bypass cable are connected with the other end of extension bar 9, pass through No. two wiring
10, No. three wiring nuts 11 of nut compress, and realize access of the bypass cable with operation ring main unit under live state, will insulate
Plug 12 is connected with the rear end of T-shaped rear joint 14, realize joint all insulation closing, again by shading ring 4 be inserted in respectively it is T-shaped before
Joint 5 and the outer layer of T-shaped rear joint 14 withdraw from protective baffle plate 3 eliminating stored charge, complete bypass cable and ring main unit
Do not have a power failure access.
Claims (4)
- The servicing unit of access cable 1. ring main unit does not have a power failure, in ring network cabinet body（2）Interior installation junction block（1）, junction block（1） Upper installation oversheath is the T-shaped front connector of all insulation material（5）, T-shaped front connector（5）Interior installation Binding post/stud（6）, run cable No.1 binding post（7）Pass through Binding post/stud（6）With junction block（1）Connect and pass through No.1 wiring nut（8）Compress；It is special Sign is：Do not have a power failure the servicing unit of access to ring main unit configuration, described servicing unit include supplementary insulation protective baffle plate and Aid in gap bridge mechanism two parts of connection；The protective baffle plate of described supplementary insulation（3）Including top plate（301）And side plate（302）, Side plate（302）On be provided with pilot hole, top plate（301）Both sides pass through lead（303）One block of side plate is respectively installed through pilot hole （302）, side plate（302）According to the interval width size of ring main unit by lead（303）Guiding to two Slideslips；Described The gap bridge mechanism of auxiliary connection includes extension bar（9）, No. two wiring nuts（10）, No. three wiring nuts（11）, insulation plug （12）, No. two binding posts（13）With T-shaped rear joint（14）, extension bar（9）One end carries internal thread hole, extension bar（9）It is another Hold as external screw thread stud, extension bar（9）One end is connected to T-shaped front connector by internal thread hole（5）Interior Binding post/stud（6）On, Extension bar（9）The other end protrude T-shaped front connector（5）Rear end outside, T-shaped rear joint（14）Access T-shaped front connector（5）After End, No. two binding posts of bypass cable（13）It is connected to extension bar（9）The other end external screw thread stud on, and pass through No. two Wiring nut（10）, No. three wiring nuts（11）Compress, insulate plug（12）Installed in T-shaped rear joint（14）Rear end.
- The servicing unit of access cable 2. ring main unit according to claim 1 does not have a power failure, it is characterized in that：Top plate（301）On Fixing line is installed（15）.
- The servicing unit of access cable 3. ring main unit according to claim 1 does not have a power failure, it is characterized in that：Extension bar（9）Outside It is set with insulating sleeve（901）.
- The servicing unit of access cable 4. ring main unit according to claim 1 does not have a power failure, it is characterized in that：In T-shaped front connector （5）, T-shaped rear joint（14）It is upper that shading ring is installed respectively（4）.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610527737.8A CN106159758B (en) | 2016-07-07 | 2016-07-07 | Ring main unit, which does not have a power failure, accesses the servicing unit of cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610527737.8A CN106159758B (en) | 2016-07-07 | 2016-07-07 | Ring main unit, which does not have a power failure, accesses the servicing unit of cable |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106159758A CN106159758A (en) | 2016-11-23 |
| CN106159758B true CN106159758B (en) | 2018-03-09 |
Family
ID=58061365
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610527737.8A Active CN106159758B (en) | 2016-07-07 | 2016-07-07 | Ring main unit, which does not have a power failure, accesses the servicing unit of cable |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106159758B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108598828B (en) * | 2018-05-18 | 2019-07-30 | 绍兴文理学院元培学院 | A kind of paired cable T connects formula installation method |
| CN114374167B (en) * | 2021-12-21 | 2024-03-01 | 杭州电力设备制造有限公司 | Quick access device for ring main unit emergency power supply and automatic temperature sensing detection method |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3353007B1 (en) * | 2001-08-28 | 2002-12-03 | 三菱電線工業株式会社 | Branch connection method of cable and branch connector |
| CN103050892A (en) * | 2012-12-28 | 2013-04-17 | 上海市电力公司 | Uninterruptible-operated bypass connection device applied between European ring main unit and American type ring main unit |
| CN105024315A (en) * | 2015-08-18 | 2015-11-04 | 国网重庆市电力公司南岸供电分公司 | T-type cable connector quick pulling-out device and pulling-out method |
| CN205811384U (en) * | 2016-07-07 | 2016-12-14 | 国网江苏省电力公司淮安供电公司 | Ring main unit does not have a power failure and accesses the auxiliary device of cable |
-
2016
- 2016-07-07 CN CN201610527737.8A patent/CN106159758B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3353007B1 (en) * | 2001-08-28 | 2002-12-03 | 三菱電線工業株式会社 | Branch connection method of cable and branch connector |
| CN103050892A (en) * | 2012-12-28 | 2013-04-17 | 上海市电力公司 | Uninterruptible-operated bypass connection device applied between European ring main unit and American type ring main unit |
| CN105024315A (en) * | 2015-08-18 | 2015-11-04 | 国网重庆市电力公司南岸供电分公司 | T-type cable connector quick pulling-out device and pulling-out method |
| CN205811384U (en) * | 2016-07-07 | 2016-12-14 | 国网江苏省电力公司淮安供电公司 | Ring main unit does not have a power failure and accesses the auxiliary device of cable |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106159758A (en) | 2016-11-23 |
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