CN103066504A - One-side no-break power supply extendable type ring main unit - Google Patents
One-side no-break power supply extendable type ring main unit Download PDFInfo
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- CN103066504A CN103066504A CN2013100121497A CN201310012149A CN103066504A CN 103066504 A CN103066504 A CN 103066504A CN 2013100121497 A CN2013100121497 A CN 2013100121497A CN 201310012149 A CN201310012149 A CN 201310012149A CN 103066504 A CN103066504 A CN 103066504A
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- power supply
- main unit
- ring main
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- 238000009413 insulation Methods 0.000 claims description 11
- 238000007789 sealing Methods 0.000 claims description 7
- 238000012360 testing method Methods 0.000 description 10
- 238000010586 diagram Methods 0.000 description 5
- 239000012212 insulator Substances 0.000 description 4
- 230000005611 electricity Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
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Abstract
The invention discloses a one-side no-break power supply extendable type ring main unit which is suitable for a distribution circuit with realized ring network power supply. The one-side no-break power supply extendable type ring main unit is full-sealed, full-insulated, extendable and the like. A basic bus, a section of to-be-extended bus and a three-position switch are arranged in the ring main unit. The to-be-extended bus is arranged at the other end of the basic bus through the three-position switch, the to-be-extended bus is connected with a moving contact of the three-position switch, and a fixed contact of the three-position switch is connected with the basic bus. When cabinet assembling operation is conducted, power supply of the three-position switch is cut off and the moving contact is struck to the grounding position through operations of back brake without interrupted power supply so as to ensure that the to-be-extended bus of the ring main unit and a bus outlet side of the ring main unit are both uncharged and connected with the ground reliably, and then the bus of the ring main unit needs to be expended and the to-be-extended bus are connected so that cabinet assembling operation is finished. The one-side no-break power supply extendable type ring main unit is capable of improving reliability of power supply, saving network distribution investment cost and offering convenient high voltage power supply for an emergency by-pass work vehicle under an existing power distribution network.
Description
Technical field
The present invention relates to a kind of switchgear, refer in particular to a kind of one-sided uninterrupted power supply expandable type ring main unit unit.
Background technology
As shown in Figure 1, current ring main unit all is the unit that only has simple function, and operating ring main unit must have a power failure when expansion could piece together the cabinet operation.Power failure operation must increase amount when having a power failure, and is unfavorable for the raising of reliability index.According to statistics, have a power failure to piece together the cabinet needed interruption duration of constructing and account for 7% of total interruption duration, and along with ring main unit uses more widely and other conditions cause power failure time constantly in the situation of minimizing, its proportion will rise year by year.Therefore, need a kind of uninterrupted power supply of exploitation can expand the novel expandable type ring main unit of piecing together the cabinet operation.
According to existing distribution planning, generally all need to reserve 4-6 face distribution reserve tank of the same type at power distribution room, so that industry expansion or net change in the engineering and use afterwards, will cause the larger wasting of resources like this.
10kV (20kV) emergency bypass Operation Van is difficult to access 10kV (20kV) high voltage source at power distribution room when operation, certainly will increase difficulty for operation.
Existing power distribution room area and shape vary, and power distribution cabinet of a great variety must be developed a kind of novel one-sided uninterrupted power supply expandable type ring main unit unit and could be satisfied current demand.
Summary of the invention
The purpose of this invention is to provide a kind of one-sided uninterrupted power supply expandable type ring main unit unit, it can overcome the deficiencies in the prior art, can not interrupt normal power supply when carrying out one-sided assembly cabinet operation; Can adapt to existing power distribution room area and shape varies, miscellaneous situation of power distribution cabinet; And do not need to reserve distribution reserve tank, escapable cost; And can be 10kV (20kV) emergency bypass Operation Van easily high voltage source is provided.
The object of the present invention is achieved like this:
A kind of one-sided uninterrupted power supply expandable type ring main unit unit, it is characterized in that, be provided with basic bus, one section in it and treat extended busbar and a three-station, treat that extended busbar is located at the other end of basic bus by three-station, treat that extended busbar is connected with the three-station moving contact, the fixed contact of three-station is connected with basic bus.Do not connect any switch on the bus of basis, basic bus plays the effect that is connected with other conventional buses.
Preferably, described three-station is three-stations load switch.
Preferably, the described outer end of extended busbar for the treatment of is provided with sleeve pipe, and adopts the sealing of insulation plug.
Preferably, the outer end of described basic bus is provided with sleeve pipe, and adopts the sealing of insulation plug.
The one-sided outer tube of extended busbar for the treatment of in one-sided uninterrupted power supply expandable type ring main unit unit seals with the insulation plug, confirm that the moving contact of this ring main unit three-station beats behind earthing position, take the outer tube insulator seal plug for the treatment of extended busbar apart, then finish the expansion operation.
The present invention compared with prior art has following beneficial effect:
1, one-sided uninterrupted power supply expandable type ring main unit unit possesses looped network function and bus section function simultaneously.
2, three-stations load switch is not only as the ring-main unit switch while but also as busbar sectional izing switch.
3, under the uninterrupted power supply condition, can carry out the ring main unit expansion, power supply reliability is improved about 7%, need to not reserve again 4-6 face power distribution cabinet at power distribution station, optimized distribution planning, material cost, construction cost and maintenance cost have been saved to greatest extent, avoid the wasting of resources, greatly improved the flexibility that distribution net equipment is arranged in the power distribution room and the retractility in space.
4, be applicable to existing power distribution room area and shape varies, miscellaneous present situation of power distribution cabinet.Make the switch of all various combinations all indirectly have the extendible function of uninterrupted power supply.
5, can be used as the emergent comprehensive bypass operation overall height voltage source " socket " of 10kV (20kV), solve its temporary source and access problem, provide more power supply selection scheme for protecting power supply, solved the difficult problem that power distribution room in the past can't provide for protecting the emergent comprehensive operation vehicle of power supply power supply.
Description of drawings
Fig. 1 is the circuit diagram after the expansion of prior art ring main unit;
Fig. 2 is the circuit diagram before the one-sided uninterrupted power supply expandable type of the present invention ring main unit unit extensions;
Fig. 3 is the circuit diagram in the one-sided uninterrupted power supply expandable type of the present invention ring main unit unit extensions;
Fig. 4 is the circuit diagram after the one-sided uninterrupted power supply expandable type of the present invention ring main unit unit extensions;
Fig. 5 is that the one-sided uninterrupted power supply expandable type of the present invention ring main unit unit is as the circuit diagram of the power supply " socket " of 10kV (20kV) emergency bypass Operation Van.
Embodiment
As shown in Figure 2 to Figure 3, the one-sided uninterrupted power supply expandable type of the present invention ring main unit unit, be provided with basic bus 11, one section in it and treat extended busbar 12 and three-station 13, treat extended busbar 12 by three-station 13 be located at basic bus 11 the other end, treat that extended busbar 12 is connected with the moving contact of three-station 13, the fixed contact of three-station 13 is connected with basic bus 11.Three-station 13 also is provided with ground connection station 17.Do not connect any switch on the bus of basis, basic bus plays the effect that is connected with other conventional buses.Before the installation, the outer end of basic bus is provided with sleeve pipe, and adopts the sealing of insulation plug.Not only can be connected different switch combinations according to the operation needs and connect in this one-sided uninterrupted power supply expandable type ring main unit unit with same model, also can by the different switch combinations connections of excessive cabinet from other models, have larger adaptability and flexibility.
When piecing together the cabinet operation; pass through grid switching operation; in the situation of uninterrupted power supply; beat at earthing position with three-station 13 power failures and with moving contact; that guarantees that ring main unit treats the extension side treats all not charged and reliable grounds of extended busbar and outgoing line side; take the outer tube insulator seal plug for the treatment of extended busbar apart, then finish the expansion operation.In this preferred embodiment, described three-station 13 is three-stations load switch.
For ease of expanding new ring main unit, the described outer end of extended busbar 12 for the treatment of is provided with sleeve pipe, and adopts the sealing of insulation plug.
Described one-sided uninterrupted power supply expandable type ring main unit unit can be seen a line unit cabinet with bus section function as, so its operation is consistent with common three-stations load switch, five anti-functions are also identical with existing equipment, just when it also holds concurrently as extension cabinet as outlet, must confirm especially line end and treat that extended busbar is not charged before closing splice grafting ground switch, perhaps can dispose the generation that live locking earthing function is stopped this possibility misoperation.
On-the-spot expansion practical operation is divided into two kinds of situations and considers: one, the expansion practical operation situation when uninterrupted power supply expandable type ring main unit unit during as reserve tank; Its two, the expansion practical operation situation when uninterrupted power supply expandable type ring main unit unit as outgoing line cabinet (charged).
One, the expansion practical operation situation when uninterrupted power supply expandable type ring main unit unit during as reserve tank
When 1) normally moving, the one-sided extended busbar for the treatment of is not charged, this reserve tank treat the extended busbar outer tube with insulation plug sealing, 13 dozens of reserve tank three-stations are at earthing position.
2) when expansion, confirming that 13 dozens of reserve tank ring main unit three-stations behind earthing position, take apart and originally treat extended busbar outer tube insulator seal plug, newly-increased bus and newly-increased switch cubicle and cable are installed.
3) with 13 dozens of reserve tank three-stations at open position, connect testing equipment, new clothes equipment is carried out major loop resistance and insulation resistance test.Withstand voltage test and cable testing can also carried out separately first before the cabinet.
4) test complete after, the reserve tank three-station 13 that closes send electricity more one by one, whole expansion project is complete.
Its two, the expansion practical operation situation when uninterrupted power supply expandable type ring main unit unit as outgoing line cabinet (charged)
When 1) normally moving, all switches all are in closing position, three-station 13 also is in "on" position, and described ring main unit front sleeve pipe cable outlet is charged, and the one-sided outer tube of extended busbar 12 for the treatment of seals (operational mode as shown in Figure 2) with the insulation plug.
2) before the expansion, separate first this ring main unit load switch 13, and the other end on-load switch of outlet cable separately, affirmation without electricity after, with 13 dozens of three-stations at earthing position, take apart and treat extension side bus outer tube insulator seal plug, newly-increased bus and newly-increased switch cubicle and outlet cable (operational mode as shown in Figure 3) are installed.
3) with 13 dozens of three-stations at open position, connect testing equipment, new clothes equipment is carried out major loop resistance and insulation resistance test.Withstand voltage test and cable testing can also carried out separately first before the cabinet.
4) test complete after, by grid switching operation, recover original operational mode, the three-station 13 that closes send electricity more one by one, whole expansion project complete (operational mode as shown in Figure 4).
As shown in Figure 5, they can also be as emergent comprehensive bypass operation car 15 power supplys " socket " of 10kV.But interim ring main unit 16 can be connected with the extension side of one-sided uninterrupted power supply, has the uninterrupted power supply extendable functions, provides easily high voltage source for the emergent comprehensive bypass operation car of 10kV (20kV) carries out various operations.
The above embodiment has only expressed several execution mode of the present invention, and it describes comparatively concrete and detailed, but can not therefore be interpreted as the restriction to claim of the present invention.Should be pointed out that for the person of ordinary skill of the art without departing from the inventive concept of the premise, can also make some distortion and improvement, these all belong to protection scope of the present invention.Therefore, the protection range of patent of the present invention should be as the criterion with claims.
Claims (4)
1. one-sided uninterrupted power supply expandable type ring main unit unit, it is characterized in that, be provided with basic bus, one section in it and treat extended busbar and a three-station, treat that extended busbar is located at the other end of basic bus by three-station, treat that extended busbar is connected with the three-station moving contact, the fixed contact of three-station is connected with described basic bus.
2. one-sided uninterrupted power supply expandable type ring main unit according to claim 1 unit is characterized in that described three-station is three-stations load switch.
3. one-sided uninterrupted power supply expandable type ring main unit according to claim 1 unit is characterized in that the described outer end of extended busbar for the treatment of is provided with sleeve pipe, and adopts the sealing of insulation plug.
4. one-sided uninterrupted power supply expandable type ring main unit according to claim 1 unit is characterized in that the outer end of described basic bus is provided with sleeve pipe, and adopts the sealing of insulation plug.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013100121497A CN103066504A (en) | 2012-12-28 | 2013-01-11 | One-side no-break power supply extendable type ring main unit |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210585603.3 | 2012-12-28 | ||
| CN201210585603 | 2012-12-28 | ||
| CN2013100121497A CN103066504A (en) | 2012-12-28 | 2013-01-11 | One-side no-break power supply extendable type ring main unit |
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| Publication Number | Publication Date |
|---|---|
| CN103066504A true CN103066504A (en) | 2013-04-24 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013100121497A Pending CN103066504A (en) | 2012-12-28 | 2013-01-11 | One-side no-break power supply extendable type ring main unit |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113594944A (en) * | 2021-07-27 | 2021-11-02 | 江苏亚开电气有限公司 | Automatic production method of ring main unit |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001352623A (en) * | 2000-06-02 | 2001-12-21 | Mitsubishi Electric Corp | Gas insulated switchgear |
| KR20090008145A (en) * | 2007-07-17 | 2009-01-21 | 가부시키가이샤 히타치세이사쿠쇼 | Vacuum isolation switch gear |
| CN201210593Y (en) * | 2008-06-18 | 2009-03-18 | 希格玛电气(珠海)有限公司 | Looped network switch cabinet |
| CN201392989Y (en) * | 2009-02-10 | 2010-01-27 | Abb技术有限公司 | Top entry and exit switchgear |
| CN201690124U (en) * | 2010-05-19 | 2010-12-29 | 扬州扬开电力控制设备有限公司 | Extended busbar of intelligent ring main unit |
| CN203014181U (en) * | 2012-12-28 | 2013-06-19 | 广州供电局有限公司 | Expandable looped network cabinet unit capable of not interrupting power supply at single side |
-
2013
- 2013-01-11 CN CN2013100121497A patent/CN103066504A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001352623A (en) * | 2000-06-02 | 2001-12-21 | Mitsubishi Electric Corp | Gas insulated switchgear |
| KR20090008145A (en) * | 2007-07-17 | 2009-01-21 | 가부시키가이샤 히타치세이사쿠쇼 | Vacuum isolation switch gear |
| CN201210593Y (en) * | 2008-06-18 | 2009-03-18 | 希格玛电气(珠海)有限公司 | Looped network switch cabinet |
| CN201392989Y (en) * | 2009-02-10 | 2010-01-27 | Abb技术有限公司 | Top entry and exit switchgear |
| CN201690124U (en) * | 2010-05-19 | 2010-12-29 | 扬州扬开电力控制设备有限公司 | Extended busbar of intelligent ring main unit |
| CN203014181U (en) * | 2012-12-28 | 2013-06-19 | 广州供电局有限公司 | Expandable looped network cabinet unit capable of not interrupting power supply at single side |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113594944A (en) * | 2021-07-27 | 2021-11-02 | 江苏亚开电气有限公司 | Automatic production method of ring main unit |
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Application publication date: 20130424 |