CN103066503A - One-side no-break power supply extendable type ring network unit - Google Patents
One-side no-break power supply extendable type ring network unit Download PDFInfo
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- CN103066503A CN103066503A CN2012105839362A CN201210583936A CN103066503A CN 103066503 A CN103066503 A CN 103066503A CN 2012105839362 A CN2012105839362 A CN 2012105839362A CN 201210583936 A CN201210583936 A CN 201210583936A CN 103066503 A CN103066503 A CN 103066503A
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Abstract
The invention discloses a one-side no-break power supply extendable type ring network unit which is suitable for a power distribution line which realizes ring network power supply. The ring network unit has the advantages of being fully sealed, fully insulated, common in box body, capable of being extended and the like. A foundation bus, a section of a to-be-extended bus and a three-station switch are arranged inside the ring network unit. The to-be-extended bus is arranged at one end of the foundation bus and connected with a moving contact of the three-station switch. A static contact of the three-station switch is connected with one side of the foundation bus. When operation of splicing the unit is carried out, by means of back brake operation and on the condition of no-break power supply, the three-station switch is powered off and the moving contact is located on the grounding position to ensure that the to-be-extended bus of the ring network unit and the wire outlet side are respectively powered off and grounded reliably, and a bus, needing to be extended, of the ring network unit, is connected with the to-be-extended bus so that the operation of splicing the unit is finished. With an existing power distribution network, power supply reliability is improved, investment cost of the distribution network is saved, and convenient and fast high-voltage power supply is provided for emergency side road operation vehicles.
Description
Technical field
The present invention relates to a kind of switchgear combination, refer in particular to a kind of one-sided uninterrupted power supply expandable type ring main 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 changing in the engineering, the expansion of industry afterwards and net use, 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.
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, it can overcome the deficiencies in the prior art, can not interrupt normal power supply when carrying out one-sided assembly cabinet operation; And do not need to reserve power distribution cabinet, 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, it is characterized in that, be provided with basic bus, one section in it and treat extended busbar and three-station, treat that extended busbar is located at an end of basic bus, treat that extended busbar is connected with the three-station moving contact, the fixed contact of three-station is connected with basic bus.The basis bus can connect more than one three-station according to the operation needs.
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 of one-sided uninterrupted power supply ring main unit (hereinafter to be referred as ring main unit) seals with the insulation plug, the moving contact of affirmation ring main unit three-station is beaten 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 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, 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.
5, adopt the common box type switch combination can reduce manufacturing cost.
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 expansion of the one-sided uninterrupted power supply expandable type of the present invention ring main unit;
Fig. 3 is the circuit diagram in the expansion of the one-sided uninterrupted power supply expandable type of the present invention ring main unit;
Fig. 4 is the circuit diagram after the expansion of the one-sided uninterrupted power supply expandable type of the present invention ring main unit;
Fig. 5 is that the one-sided uninterrupted power supply expandable type of the present invention ring main 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, be provided with basic bus 11, one section in it and treat extended busbar 12 and three-station 13, treat that extended busbar 12 is located at the other end of basic bus 11, treats that extended busbar 12 is connected with the moving contact of three-station 13 that the fixed contact of three-station 13 is connected with basic bus 11.Three-station 13 also is provided with ground connection station 17.When piecing together the cabinet operation, pass through grid switching operation, in the situation of uninterrupted power supply, to treat three-station 13 power failures of extended busbar 12 sides and moving contact be beaten at earthing position, that guarantees that described 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, three-station 13 is three-stations load switch.
For ease of expanding new ring main unit, treat that the outer end of extended busbar 12 is provided with sleeve pipe, and adopt the sealing of insulation plug.
Described one-sided uninterrupted power supply expandable type ring main unit can be seen a line combination sideboard that has the line unit cabinet of bus section function or have the 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, elder generation's grid switching operation turns for load, then separate this ring main unit load switch 13, and the other end on-load switch of outlet cable separately, affirmation without electricity after, 13 dozens of three-stations at earthing position, are taken apart and treated 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, it is characterized in that, be provided with basic bus, one section in it and treat extended busbar and three-station, treat that extended busbar is located at an end of basic bus, treat that extended busbar is connected with the three-station moving contact, the fixed contact of three-station is connected with basic bus, and basic bus can connect more than one three-station according to the operation needs.
2. one-sided uninterrupted power supply expandable type ring main unit according to claim 1 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 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 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 |
|---|---|---|---|
| CN2012105839362A CN103066503A (en) | 2012-12-28 | 2012-12-28 | One-side no-break power supply extendable type ring network unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012105839362A CN103066503A (en) | 2012-12-28 | 2012-12-28 | One-side no-break power supply extendable type ring network unit |
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| CN103066503A true CN103066503A (en) | 2013-04-24 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2012105839362A Pending CN103066503A (en) | 2012-12-28 | 2012-12-28 | One-side no-break power supply extendable type ring network unit |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105958330A (en) * | 2016-07-13 | 2016-09-21 | 广东友源电气有限公司 | Ring network switch cabinet capable of being jointed in electrified manner |
| CN110346710A (en) * | 2019-07-08 | 2019-10-18 | 贵州电网有限责任公司 | A kind of ring network cabinet outlet starting method for avoiding client from having a power failure |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1637988A (en) * | 2003-12-26 | 2005-07-13 | 株式会社日立制作所 | Vacuum switchgear system |
| CN201392989Y (en) * | 2009-02-10 | 2010-01-27 | Abb技术有限公司 | Top incoming and outgoing line switch cabinet |
| CN201674150U (en) * | 2010-05-04 | 2010-12-15 | 句容富达电气科技有限公司 | Cordwood system intelligent ring network cabinet |
| 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 |
| CN202978004U (en) * | 2012-12-28 | 2013-06-05 | 广州供电局有限公司 | Unilaterally/uninterruptedly-powered extensible-type ring main unit |
-
2012
- 2012-12-28 CN CN2012105839362A patent/CN103066503A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1637988A (en) * | 2003-12-26 | 2005-07-13 | 株式会社日立制作所 | Vacuum switchgear system |
| CN201392989Y (en) * | 2009-02-10 | 2010-01-27 | Abb技术有限公司 | Top incoming and outgoing line switch cabinet |
| CN201674150U (en) * | 2010-05-04 | 2010-12-15 | 句容富达电气科技有限公司 | Cordwood system intelligent ring network cabinet |
| 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 |
| CN202978004U (en) * | 2012-12-28 | 2013-06-05 | 广州供电局有限公司 | Unilaterally/uninterruptedly-powered extensible-type ring main unit |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105958330A (en) * | 2016-07-13 | 2016-09-21 | 广东友源电气有限公司 | Ring network switch cabinet capable of being jointed in electrified manner |
| CN110346710A (en) * | 2019-07-08 | 2019-10-18 | 贵州电网有限责任公司 | A kind of ring network cabinet outlet starting method for avoiding client from having a power failure |
| CN110346710B (en) * | 2019-07-08 | 2022-04-01 | 贵州电网有限责任公司 | Ring main unit outgoing line starting method for avoiding customer power failure |
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Inventor after: Lin Yongfeng Inventor after: Lin Jianbing Inventor after: Zhou Jinhao Inventor after: Chen Jianle Inventor after: Pan Wei Inventor after: Zhang Defeng Inventor after: Hou Tianshui Inventor after: Zhu Tiepeng Inventor after: Dai Nanzhou Inventor after: Wu Guopei Inventor after: Xiao Zhaohua Inventor after: Li Minjian Inventor after: Xu Jikui Inventor after: Li Ling Inventor after: Liao Weiyan Inventor after: Zhang Xizhong Inventor before: Lin Yongfeng Inventor before: Lin Jianbing Inventor before: Zhou Jinhao Inventor before: Chen Jianle Inventor before: Pan Wei Inventor before: Zhang Defeng Inventor before: Hou Tianshui Inventor before: Dai Nanzhou Inventor before: Wu Guopei Inventor before: Xiao Zhaohua Inventor before: Li Minjian Inventor before: Xu Jikui Inventor before: Li Ling Inventor before: Liao Weiyan Inventor before: Zhang Xizhong |
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Free format text: CORRECT: INVENTOR; FROM: LIN YONGFENG DAI NANZHOU WU GUOPEI XIAO ZHAOHUA LI MINJIAN XU JIKUI LI LING LIAO WEIYAN ZHANG XIZHONG LIN JIANBING ZHOU JINHAO CHEN JIANLE PAN WEI ZHANG DEFENG HOU TIANSHUI TO: LIN YONGFENG DAI NANZHOU WU GUOPEI XIAO ZHAOHUA LI MINJIAN XU JIKUI LI LING LIAO WEIYAN ZHANG XIZHONG LIN JIANBING ZHOU JINHAO CHEN JIANLE PAN WEI ZHANG DEFENG HOU TIANSHUI ZHU TIEPENG |
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Application publication date: 20130424 |