CN105896351A - Five-prevention forcible locking system used for preventing electrified hanging connection of transformer with grounding wire - Google Patents
Five-prevention forcible locking system used for preventing electrified hanging connection of transformer with grounding wire Download PDFInfo
- Publication number
- CN105896351A CN105896351A CN201610237088.8A CN201610237088A CN105896351A CN 105896351 A CN105896351 A CN 105896351A CN 201610237088 A CN201610237088 A CN 201610237088A CN 105896351 A CN105896351 A CN 105896351A
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- China
- Prior art keywords
- earth lead
- transformator
- transformer
- display device
- wireless
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- 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
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- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Power Engineering (AREA)
- Suspension Of Electric Lines Or Cables (AREA)
Abstract
The invention discloses a five-prevention forcible locking system used for preventing electrified hanging connection of a transformer with a grounding wire, and belongs to the emergency device field. A grounding wire accommodation box provided with a cover is disposed on an outer side of an insulation ceramic bottle on the wire inlet outlet end of the transformer, and the grounding wire is disposed in the grounding wire accommodation box. A wireless electrified display device is disposed on one of the wire inlet outlet end copper bars of the transformer. An electronic lock is disposed on the cover of the grounding wire accommodation box. The grounding wire accommodation box, the wireless electrified display device, and the electronic lock are used to form the locking device capable of preventing the electrified hanging connection of the transformer with the grounding wire. The five-prevention forcible locking system is advantageous in that the hanging connection of the transformer with the grounding wire is facilitated, and the phenomenon of the electrified hanging connection with the grounding wire is prevented, the object of the customization management of the arrangement of the grounding wire is achieved, and the defect of the conventional five-prevention management of the lack of the forcible locking of the hanging connection is remedied, and in addition, the five-prevention forcible locking system is widely used for the five-prevention management field of the transformer.
Description
Technical field
The invention belongs to sentinel plant field, particularly relate to the mode of connection of a kind of transformer grounding line.
Background technology
Earth lead is to ensure that work about electric power personnel important tool of trouble free service on the equipment having had a power failure and circuit, is also become safety line or life line by we work about electric power person.The protection losing earth lead the most at work may bring the potential safety hazard of the serious person or equipment.
Specify according to " preventing electric misoperation device management from specifying " Article 21: error-proof device should realize following functions (be called for short " five prevent "):
1. prevent from dividing by mistake, missing combination switch；
2. prevent on-load from drawing, closing isolation switch；
3. prevent band cable address (conjunction) earth lead (grounding switch)；
4. prevent line with ground (grounding switch) combination switch (isolation switch)；
5. prevent mistakenly entering charged chamber.
All electrical equipments likely causing above accident, all should install error-proof device.
" preventing electric misoperation device management from specifying " Article 22 specifies: in " five prevent " function except preventing by mistake point, by mistake combination switch can use indicative mode, remaining " four prevent " must use mandatory mode.
Nowadays, the more and more high-tension switch cabinet form that uses of transformer and distribution power station circuit units, its five-preventing system or block sytem is more and more perfect, protect the safety of work about electric power person and electrical equipment.
But, applicant is it is again seen that uniquely there is " five prevent " blind spot or be worth the design exactly transformator during power failure being hung to earth lead improved in current transformer station.
Because for working for Repair of Transformer, when transformator respectively holds (end of incoming cables and the leading-out terminal copper bar that refer to transformator) to hang earth lead, only guarantee correctly to install earth lead by operations staff's inherently safe consciousness, there is no forced locking device, if work process there being any one annelet go wrong, it is likely on the copper bar of line end, install earth lead at charged transformator, there is serious potential safety hazard.Once causing band cable address transformer grounding line, the consequence caused is extremely serious, hardly imaginable.
Additionally recognize also by operation operator, installing earth lead is a very hard work the most on the transformer, because transformer grounding line is long and diameter is thicker, bulky, a dead lift gets up the most laborious, because transformer structure itself reason (particularly outdoor type three-winding transformer situation compare two-winding transformer situation increasingly complex), when from the bottom (ground) of transformator by transformator on earth strap above process difficulty especially quite big, the most increasing earth lead is that management work also brings certain pressure.Such as, 110 kilovolts of inlet wire cable sleeve distance to the ground of 110 its correspondences of kv transformer generally have 7-8 rice, in 110KV transformer chamber, bottom 110KV inlet wire end porcelain vase, the height to ground is about 6 meters, so, when transformator is overhauled by needs, 110 kilovolts of sides (by end) of main transformer hang earth lead by extremely difficult, operator need to climb to cable porcelain vase from cable bearer, but the platform that the base position neither one of cable porcelain vase can be kept a foothold, falls from high altitude hanging earthing conductor is as easy as rolling off a log.Additionally, when 110 kilovolts of high-pressure side ends need construction or maintenance, also there will be similar problem.
Summary of the invention
The technical problem to be solved is to provide a kind of prevents strong block sytem for preventing transformer belt cable address from connecing the five of earth lead, it is by arranging earth lead placing box at transformer field, in transformator end of incoming cables, wireless live display device is set, and locking/interlock connection is set up in the unlatching of the output result of wireless live display device Yu earth lead placing box, thus facilitate the mounting of transformer grounding line, and the generation of charged mounting earth lead phenomenon can be avoided.
The technical scheme is that offer is a kind of to prevent strong block sytem, including earth lead, it is characterized in that for preventing transformer belt cable address from connecing the five of earth lead:
In the outside into and out of line end porcelain insulator of transformator, it is correspondingly arranged an earth lead placing box with cover；
It is placed with earth lead in earth lead placing box；
On line end copper bar, it is respectively provided with a wireless live display device at transformator；
Described wireless live display device is made up of live detection, wireless signal transmission and reception of wireless signals unit；
The lid of earth lead placing box arranges an electronic lock；
The live detection of described wireless live display device, wireless signal transmission unit be arranged on transformator into and out of on line end copper bar；
The reception of wireless signals unit of described wireless live display device and described electronic lock open or lock-in control end is connected；
Described earth lead placing box, wireless live display device and electronic lock, is constituted for preventing transformer belt cable address from connecing the blocking device of earth lead.
Concrete, described wireless live display device is conventional wireless live display device.
Further, the safe distance that described earth lead placing box distance of positions transformator specifies into and out of the distance outside line end porcelain insulator more than safety code.
Further, the length of described earth lead, more than the distance into and out of line end copper bar terminal with ground of transformator.
Further, described earth lead placing box is arranged on an operating platform.
Compared with the prior art, the invention have the advantage that
1., by the setting of earth lead placing box, it is to avoid the remote a dead lift of earth lead, reduce labor intensity of operating staff, the placement of earth lead can be made again to reach customized management purpose；
2. by arranging wireless live display device and the interlocking with earth lead placing box lid open close control electronic lock thereof, it is to avoid band cable address transformer grounding line；Taken out the forced blocking of step by earth wire, compensate in existing " five prevent " management transformator hanging earthing conductor without the defect of forced blocking；
The most whole transformation and construction do not affect operation and the maintenance of existing equipment, it is simple to implement and promote.
Accompanying drawing explanation
Figure 1It it is the frame for movement signal of the present inventionFigure；
Figure 2It it is the structural representation of earth lead placing boxFigure。
In figure1 is transformator, 2 be transformator into and out of line end copper bar, 3 is earth lead placing box, and 4 is wireless live display device, and 5 is operating platform, and 6 is the lid of earth lead placing box, and 7 is electronic lock.
Detailed description of the invention
Below in conjunction withAccompanying drawingThe present invention will be further described with embodiment.
Figure 1In, technical scheme provides a kind of prevents strong block sytem for preventing transformer belt cable address from connecing the five of earth lead, and including earth lead, its inventive point is:
At transformator 1 into and out of line end porcelain insulator or transformator into and out of the outside of line end copper bar 2, be correspondingly arranged an earth lead placing box 3 with cover；
It is placed with earth lead in earth lead placing box；
At transformator, a wireless live display device 4 is set on line end copper bar；
Described wireless live display device is made up of live detection, wireless signal transmission and reception of wireless signals unit；
Figure 2In, the lid 6 of earth lead placing box is provided with an electronic lock 7.
The live detection of described wireless live display device, wireless signal transmission unit be arranged on transformator into and out of on line end copper bar；
The reception of wireless signals unit of described wireless live display device and described electronic lock open or lock-in control end is connected.
Described earth lead placing box, wireless live display device and electronic lock, is constituted for preventing transformer belt cable address from connecing the blocking device of earth lead.
When described wireless live display device detect transformator into and out of line end copper bar charged time, export block signal, described electronic lock is in blocking, and the lid of described earth lead placing box cannot be opened；
When described wireless live display device be not detected by transformator into and out of line end copper bar charged time, do not export block signal, described electronic lock is in open mode, and the lid of described earth lead placing box can be opened；
Described prevent strong block sytem for preventing transformer belt cable address from connecing the five of earth lead, by the detection the most charged into and out of line end copper bar to transformator, whether the lid controlling described earth lead placing box is in blocking, and then realize preventing the purpose of transformator live connection of ground wire, it is achieved transformer grounding line special project customized management.
Concrete, described wireless live display device is conventional wireless live display device.
Further, the safe distance that described earth lead placing box distance transformator specifies into and out of the distance outside line end porcelain insulator more than safety code.
The length of its described earth lead, more than the distance into and out of line end copper bar terminal with ground of transformator.
Described earth lead placing box is arranged on an operating platform 5.
Technically, respectively hold what installing earth lead system solved " five prevent " blind area first to have some function following at transformator:
1, transformator is respectively held and is needed special charged verifying attachment.
2, transformator respectively terminate ground wire should special line special.
3, transformator respectively terminates ground wire dedicated management should forced blocking function.
For " five prevent " item, the technical program is under normal circumstances, when transformator both sides are not charged and need both sides hanging earthing conductor, when earth lead placing box potential indicator (the most aforementioned wireless live display device) display transformator both sides are not charged, permission lid is opened by earth lead placing box, it is allowed to operation operator take out Special grounding wire and carry out suspension operational.
When charged display indicates that transformator both sides are charged, the lid of earth lead placing box will be unable to open, and cannot take out earth lead, prevents from running operator at transformator both sides live connection of ground wire.Transformator both sides hanging earthing conductor is included in " five prevent " latch-up specifications.
Meanwhile, the work of related ground wire management is made to put in place further by the use of this entry means.
On the premise of ensureing trouble free service, us are facilitated to carry out other work, two-door (actually twice door) also can be used to design, i.e. carrying out normal transformator live line work when, the first upper and lower operating platform in sect (this door lock is equipped with storehouse one lock) can be opened, but earth lead placing box can not be opened and take out earth lead.Only when confirming each side of transformator without electricity, just can open the second sect (i.e. the lid of earth lead placing box), take out corresponding earth lead and carry out Repair of Transformer work.
Technical scheme, prevent transformer belt cable address from connecing the five of earth lead by employing and prevent strong block sytem, when only system identifies transformator identification without electricity, can carry out electrical verification, electric discharge, hanging earthing conductor works, and (such as collects gas work) when needs carry out transformator live line work, to there is charged prompting, earth lead cannot take out, by the enforcement of this system, it is achieved that the special FIXED MANAGEMENT of transformer grounding line.
Owing to the wireless live display device in the technical program, electronic lock are commercially available prod, its concrete structure, operation principle etc. no longer describe at this.
Owing to the present invention is by arranging earth lead placing box at transformer field, facilitate the mounting of transformer grounding line, in transformator end of incoming cables, wireless live display device is set, and locking/interlock connection is set up in the unlatching of the output result of wireless live display device Yu earth lead placing box, can prevent from running operator at transformator both sides live connection of ground wire, and the work of transformator both sides hanging earthing conductor is included in the specification of " preventing to five " locking, by this project implementation, it is achieved that the special FIXED MANAGEMENT of transformer grounding line.
The method can be widely used in " five prevent " management domain of transformator.
Claims (5)
1. being used for preventing transformer belt cable address from connecing the five of earth lead and prevent a strong block sytem, including earth lead, it is special
Levy and be:
In the outside into and out of line end porcelain insulator of transformator, it is correspondingly arranged an earth lead placing box with cover；
It is placed with earth lead in earth lead placing box；
On line end copper bar, it is respectively provided with a wireless live display device at transformator；
Described wireless live display device is by live detection, wireless signal transmission and reception of wireless signals unit structure
Become；
The lid of earth lead placing box arranges an electronic lock；
The live detection of described wireless live display device, wireless signal transmission unit be arranged on transformator into and out of
On line end copper bar；
The reception of wireless signals unit of described wireless live display device is opened or lock-in control with described electronic lock
End connects；
Described earth lead placing box, wireless live display device and electronic lock, constitutes and is used for preventing transformator charged
The blocking device of mounting earth lead.
2. prevent transformer belt cable address from connecing the five of earth lead according to being used for described in claim 1 and prevent strong block sytem,
It is characterized in that described wireless live display device is conventional wireless live display device.
3. prevent transformer belt cable address from connecing the five of earth lead according to being used for described in claim 1 and prevent strong block sytem,
It is characterized in that described earth lead placing box distance of positions transformator is more than safety into and out of the distance outside line end porcelain insulator
The safe distance that code specifies.
4. prevent transformer belt cable address from connecing the five of earth lead according to being used for described in claim 1 and prevent strong block sytem,
It is characterized in that the length of described earth lead, more than the distance into and out of line end copper bar terminal with ground of transformator.
5. prevent transformer belt cable address from connecing the five of earth lead according to being used for described in claim 1 and prevent strong block sytem,
It is characterized in that described earth lead placing box is arranged on an operating platform.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610237088.8A CN105896351A (en) | 2016-04-15 | 2016-04-15 | Five-prevention forcible locking system used for preventing electrified hanging connection of transformer with grounding wire |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610237088.8A CN105896351A (en) | 2016-04-15 | 2016-04-15 | Five-prevention forcible locking system used for preventing electrified hanging connection of transformer with grounding wire |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105896351A true CN105896351A (en) | 2016-08-24 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610237088.8A Pending CN105896351A (en) | 2016-04-15 | 2016-04-15 | Five-prevention forcible locking system used for preventing electrified hanging connection of transformer with grounding wire |
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| Country | Link |
|---|---|
| CN (1) | CN105896351A (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104201571A (en) * | 2014-09-19 | 2014-12-10 | 山东电力设备有限公司 | Anti-misoperation ground protection mechanism for dry type transformer |
| CN105551785A (en) * | 2015-12-08 | 2016-05-04 | 国网上海市电力公司 | Method for preventing transformer from hanging to ground wire in electrified mode |
| CN205646573U (en) * | 2015-12-08 | 2016-10-12 | 国网上海市电力公司 | A blocking device for preventing electrified earth connection that articulates of transformer |
-
2016
- 2016-04-15 CN CN201610237088.8A patent/CN105896351A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104201571A (en) * | 2014-09-19 | 2014-12-10 | 山东电力设备有限公司 | Anti-misoperation ground protection mechanism for dry type transformer |
| CN105551785A (en) * | 2015-12-08 | 2016-05-04 | 国网上海市电力公司 | Method for preventing transformer from hanging to ground wire in electrified mode |
| CN205646573U (en) * | 2015-12-08 | 2016-10-12 | 国网上海市电力公司 | A blocking device for preventing electrified earth connection that articulates of transformer |
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Application publication date: 20160824 |
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| RJ01 | Rejection of invention patent application after publication |