CN106159758A - Ring main unit does not have a power failure and accesses the auxiliary device of cable - Google Patents
Ring main unit does not have a power failure and accesses the auxiliary device of cable Download PDFInfo
- Publication number
- CN106159758A CN106159758A CN201610527737.8A CN201610527737A CN106159758A CN 106159758 A CN106159758 A CN 106159758A CN 201610527737 A CN201610527737 A CN 201610527737A CN 106159758 A CN106159758 A CN 106159758A
- Authority
- CN
- China
- Prior art keywords
- main unit
- ring main
- cable
- power failure
- front connector
- 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.)
- Granted
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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
Abstract
The invention discloses a kind of ring main unit do not have a power failure access cable auxiliary device, junction block (1) is installed in ring network cabinet body (2), junction block (1) is upper installs the T-shaped front connector (5) that oversheath is all insulation material, installing Binding post/stud (6) in T-shaped front connector (5), the binding post (7) running cable is connected with junction block (1) by Binding post/stud (6) and passes through wiring nut (8) compression；It is characterized in that: the auxiliary device of the access that do not has a power failure to ring main unit configuration, described auxiliary device includes protective baffle plate and gap bridge mechanism two parts of auxiliary connection of supplementary insulation；Present configuration is simple, easy to operate, solves not have the ring main unit of standby spacing not have a power failure the problem accessing bypass cable.
Description
Technical field
The present invention relates to bypass the frock of uninterrupted operation, a kind of ring main unit does not have a power failure and accesses the auxiliary dress of cable
Put.
Background technology
Along with the development of urban distribution network, uninterrupted operation has become as a kind of trend, the bypass of current power system
Uninterrupted operation is more and more extended in cable run by overhead transmission line and relevant device, for cable run and ring
The work normalizations such as the service without power-off of net cabinet and replacing.
Service without power-off currently for ring main unit is generally divided into two kinds of operational methods, and one is negative by adjusting circuit
Lotus, is soared the ring main unit load of Awaiting Overhaul or replacing by grid switching operation so that it is the load carried goes to his ring main unit, this
Plant operational method and be suitable for 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 is by bypass operation, replace by bypass equipment temporarily the ring main unit of Awaiting Overhaul or replacing to
Customer power supply, this kind of operational method is applicable to various circuit, and job safety is efficient, is widelyd popularize.
Utilizing bypass equipment to substitute the operation of distribution ring main unit, if wanting, realizing user does not has a power failure, it is desirable to distribution temporarily
Ring main unit must possess standby spacing, for the access of bypass cable, the access of bypass cable by standby spacing in advance
The access socket that do not has a power failure (overwhelming majority distribution ring main unit does not all configure) installed is directly connected to bypass cable, this method requirement
The access socket that do not has a power failure must be mounted with in advance in distribution ring main unit, relatively costly；The access of bypass cable can also be by first
By standby spacing power-off, under power down mode access bypass cable, this method to standby spacing without particular/special requirement, low cost
Honest and clean, generally individually adopt this method.But for there is no the ring main unit of standby spacing, it is necessary to first have a power failure after accessing bypass cable, side
The follow-up service work of ring main unit can be carried out, whole operation process requires twice to have a power failure in short-term for bypass cable access with
Exit, still can affect power supply reliability.
For not having the ring main unit of standby spacing, if thinking to access in the energized state bypass cable, difficulty essentially consists in:
1) the T-shaped front connector of ring main unit internal wiring is all at charged belt load operation, is in insulation and obturation state, take apart T-shaped before
The rear defence protecting cover of joint, then the distance between the external shielding layer of inner conductor and T-shaped front connector is less than 30mm, and safe distance is inadequate,
Cause creepage puncturing, cause line-to-ground fault.
2) if by ring main unit connect be designed as all insulation form with T-shaped front connector outer layer, bypass cable in access procedure,
The conductor connected is with the terminals connection procedure of T-shaped front connector, and conductor is less than 80mm with the distance of ring network cabinet body, leads
Body is inadequate with the operating distance of ring network cabinet body, also results in earth fault.
3) ring main unit cabinet insied width is generally 305mm, narrow space, and cabinet and binding post exist insulating protection isolation and ask
Topic.
Summary of the invention
It is an object of the invention to: provide a kind of ring main unit not have a power failure and access the auxiliary device of cable, simple in construction, operation side
Just, solve do not have the ring main unit of standby spacing do not have a power failure access bypass cable problem.
The technical solution of the present invention is: install junction block in ring network cabinet body, junction block is installed oversheath and is
The T-shaped front connector of all insulation material, installs Binding post/stud in T-shaped front connector, the binding post running cable passes through wiring
Stud is connected with junction block and passes through a wiring nut compression；It is characterized in that: the auxiliary of the access that do not has a power failure to ring main unit configuration
Device, described auxiliary device includes protective baffle plate and gap bridge mechanism two parts of auxiliary connection of supplementary insulation；Described is auxiliary
The protective baffle plate helping insulation includes top board and side plate, and side plate has pilot hole, and lead is passed through through pilot hole in the both sides of top board
Each one block of side plate is installed, side plate according to the interval width size of ring main unit by the guiding of lead to two Slideslips；Described
The gap bridge mechanism that auxiliary connects 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 is with internal thread hole, and the extension bar other end is external screw thread stud, and extension bar one end is by interior
Screwed hole is connected on the Binding post/stud in T-shaped front connector, and the other end of extension bar highlights 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 being compressed by No. two wiring nuts, No. three wiring nuts, insulation plug is arranged on the rear end of T-shaped rear joint.
Wherein, top board is installed fixing line.
Wherein, it is set with insulated sleeve outside extension bar.
Wherein, T-shaped front connector, T-shaped rear joint are respectively mounted shading ring.
The invention have the advantage that
1, insulated sleeve uses insulation transparent material, and internal diameter is identical with the external diameter of extension bar, and length is more than extension bar, and extension bar is put
Slide in entering insulated sleeve, extension bar and the Binding post/stud connection procedure of T-shaped front connector pass through insulated sleeve all the time with outside
Isolation；
2, side plate puts into looped network by the guiding of lead to two Slideslips, protective baffle plate according to the interval width size of ring main unit
Top, is dielectrically separated from looped network cabinet inner top and both sides in cabinet, it is ensured that T-shaped rear joint insert insulation during T-shaped front connector away from
From；
3, shading ring uses copper braid over braid to make, and around the outer surface of T-shaped forward and backward joint, shading ring is connected with ring network cabinet body
Rear ground connection, eliminates T-shaped front connector and the rear joint external protection coating electric charge of accumulation when the later stage, energising ran；
4, the external sheath layer of T-shaped front connector and T-shaped rear joint is all insulation structure, it is ensured that with the insulation distance of external agency.
5, the present invention utilizes the T-shaped front connector of all insulation formula, T-shaped rear joint, insulating protection baffle plate and the protection of insulated sleeve,
By shading ring eliminate T-shaped before and after the insulating barrier stored charge of joint, solve the ring main unit without standby spacing and do not have a power failure and connect
Enter bypass cable problem, be the new method of ring main unit service without power-off and replacing.
Accompanying drawing explanation
Fig. 1 is the bypass cable access state figure of the present invention.
Fig. 2 is protective baffle plate schematic diagram.
Fig. 3 is insulated 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；No. 8 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 fix line；301 top boards；302 side plates；303 leads；901 insulated sleeve.
Detailed description of the invention
As Figure 1-3, installing junction block 1 in ring network cabinet body 2, it is all insulation material that junction block 1 is installed oversheath
The T-shaped front connector 5 of matter, installs Binding post/stud 6 in T-shaped front connector 5, runs a binding post 7 of cable by Binding post/stud 6
It is connected with junction block 1 and passes through a wiring nut 8 and compress；It is characterized in that: do not have a power failure the auxiliary dress accessed to ring main unit configuration
Putting, described auxiliary device includes protective baffle plate and gap bridge mechanism two parts of auxiliary connection of supplementary insulation；Described auxiliary
The protective baffle plate 3 of insulation includes top board 301 and side plate 302, and side plate 302 has pilot hole, and the both sides of top board 301 are by guiding
Post 303 respectively installs one block of side plate 302 through pilot hole, side plate 302 according to the interval width size of ring main unit by lead 303
Guide to two Slideslips；The gap bridge mechanism that described auxiliary connects includes extension bar 10, No. three wiring spiral shells of 9, No. two wiring nuts
Mother 11, insulation 12, No. two binding posts 13 of plug and T-shaped rear joint 14, extension bar 9 one end is with internal thread hole, and extension bar 9 is another
One end is external screw thread stud, and extension bar 9 one end is connected on the Binding post/stud 6 in T-shaped front connector 5 by internal thread hole, lengthens
The other end of bar 9 highlights 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 by 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, top board 301 is installed fixing line 15.
Wherein, extension bar 9 outer suit insulated sleeve 901.
Wherein, T-shaped front connector 5, T-shaped rear joint 14 are respectively mounted shading ring 4.
It is mounted with, on junction block 1 in running ring main unit, the T-shaped front connector 5 that oversheath is all insulation material, fortune
Number binding post 7 of row cable is connected with junction block 1 by Binding post/stud 6, and passes through a wiring nut 8 and compress, T-shaped before
The rear end of joint 5 connects insulation plug, is now ring main unit normal operating condition.
Do not have a power failure access ring main unit time: be first turned on ring main unit, protective baffle plate 3 put into ring network cabinet body 2 internal upper part, side
Plate 302 makes its width and ring network cabinet body 2 width fits by the guiding of lead 303 to two Slideslips adjustment side plates 302；Its
Secondary fixing by the fixing line 15 on top board 301；Dismantle the shading ring in T-shaped front connector 5, finish and be dielectrically separated from work；Then
Open the rear end cap of T-shaped front connector 5, expose 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 distance enough, do not have creepage phenomenon, extension bar 9 are put into insulated sleeve
In 901, the rear end that extension bar 9 pushes T-shaped front connector 5 with insulated sleeve 901 is connected with Binding post/stud 6；Then exit absolutely
Edge sleeve pipe 901, now one end of extension bar 9 highlights outside T-shaped front connector 5 rear end, because anti-bib is arranged at the top of ring network cabinet body 2
Plate 3, and T-shaped front connector oversheath around is all insulation material, therefore do not have creepage phenomenon；Finally by T-shaped rear joint 14
Accessing the rear end of T-shaped front connector 5, No. two binding posts 13 of bypass cable are connected with extension bar 9 other end, by No. two wiring
10, No. three wiring nuts 11 of nut compress, it is achieved bypass cable under live state with run ring main unit access, will insulation
Plug 12 is connected with the rear end of T-shaped rear joint 14, it is achieved all insulation of joint is closed, again shading ring 4 is inserted in respectively T-shaped before
The outer layer of joint 5 and T-shaped rear joint 14, in order to eliminate stored charge, withdraws from protective baffle plate 3, completes bypass cable and ring main unit
Do not have a power failure access.
Claims (4)
1. ring main unit do not have a power failure access cable auxiliary device, ring network cabinet body (2) in installation junction block (1), junction block (1)
Upper installation oversheath is the T-shaped front connector (5) of all insulation material, installs Binding post/stud (6), run cable in T-shaped front connector (5)
A binding post (7) be connected with junction block (1) by Binding post/stud (6) and pass through wiring nut (8) compression；It is special
Levy and be: to ring main unit configuration do not have a power failure access auxiliary device, described auxiliary device include supplementary insulation protective baffle plate and
Gap bridge mechanism two parts that auxiliary connects；The protective baffle plate (3) of described supplementary insulation includes top board (301) and side plate (302),
Having pilot hole on side plate (302), the both sides of top board (301) respectively install one block of side plate by lead (303) through pilot hole
(302), side plate (302) according to the interval width size of ring main unit by the guiding of lead (303) to two Slideslips；Described
The gap bridge mechanism that auxiliary connects includes extension bar (9), No. two wiring nuts (10), No. three wiring nuts (11), insulation plugs
(12), No. two binding posts (13) and T-shaped rear joint (14), extension bar (9) one end with internal thread hole, extension bar (9) another
End is external screw thread stud, and extension bar (9) one end is connected on the Binding post/stud (6) in T-shaped front connector (5) by internal thread hole,
The other end of extension bar (9) highlights outside the rear end of T-shaped front connector (5), after T-shaped rear joint (14) accesses T-shaped front connector (5)
End, on the external screw thread stud of the other end that No. two binding posts (13) of bypass cable are connected to extension bar (9), and by No. two
Wiring nut (10), No. three wiring nuts (11) compress, and insulation plug (12) is arranged on the rear end of T-shaped rear joint (14).
Ring main unit the most according to claim 1 does not have a power failure and accesses the auxiliary device of cable, it is characterized in that: on top board (301)
Fixing line (15) is installed.
Ring main unit the most according to claim 1 does not have a power failure and accesses the auxiliary device of cable, it is characterized in that: extension bar (9) is outward
Suit insulated sleeve (901).
Ring main unit the most according to claim 1 does not have a power failure and accesses the auxiliary device of cable, it is characterized in that: in T-shaped front connector
(5), it is respectively mounted shading ring (4) on T-shaped rear joint (14).
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 true CN106159758A (en) | 2016-11-23 |
| CN106159758B 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) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108598828A (en) * | 2018-05-18 | 2018-09-28 | 绍兴文理学院元培学院 | A kind of paired cable T connects formula installation method |
| CN114374167A (en) * | 2021-12-21 | 2022-04-19 | 杭州电力设备制造有限公司 | Rapid access device for emergency power supply of ring main unit 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 |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108598828A (en) * | 2018-05-18 | 2018-09-28 | 绍兴文理学院元培学院 | A kind of paired cable T connects formula installation method |
| CN114374167A (en) * | 2021-12-21 | 2022-04-19 | 杭州电力设备制造有限公司 | Rapid access device for emergency power supply of ring main unit and automatic temperature sensing detection 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 |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106159758B (en) | 2018-03-09 |
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