CN103036160A - Extensible type ring main unit with no-break power supply on two sides - Google Patents
Extensible type ring main unit with no-break power supply on two sides Download PDFInfo
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- CN103036160A CN103036160A CN2012105844271A CN201210584427A CN103036160A CN 103036160 A CN103036160 A CN 103036160A CN 2012105844271 A CN2012105844271 A CN 2012105844271A CN 201210584427 A CN201210584427 A CN 201210584427A CN 103036160 A CN103036160 A CN 103036160A
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Abstract
The invention discloses an extensible type ring main unit with no-break power supply on two sides, the ring main unit is suitable for being used in a distributing line in which ring network power supply is achieved, and the ring main unit has the advantages of being full-sealed, full-insulated, extensible and capable of using one box body. A base bus, two sections of to-be-extended buses and a three-position switch are arranged in the ring main unit, the two sections of to-be-extended buses are respectively arranged at two ends of the base bus, the two sections of to-be-extended buses are respectively connected with a moving contact of the three-position switch, and a fixed contact of the three-position switch is connected with the base bus. When ring main units are connected, under the condition of no-break power supply, through a switching operation, the three-position switch is powered off, the moving contact is turned to a grounding position, the effect that the to-be-extended buses and a coil out side are dead and are grounded reliably is ensured, a bus, which needs to be extended, of an extensible type ring main unit, is connected with the to-be-extended buses, and then the ring main unit connection operation is finished. Under an existing power distribution network, power supply reliability can be improved, distribution network investment cost can be saved, and convenient and fast high-voltage power supply can be provided for an emergency bypass work vehicle.
Description
Technical field
The present invention relates to a kind of switchgear combination, namely refer to a kind of both sides 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 piece together the novel expandable type ring main unit of 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, change in the engineering and use in order to already expand afterwards engineering or net, 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 both sides uninterrupted power supply expandable type ring main unit, it can overcome the deficiencies in the prior art, is carrying out can not interrupting normal power supply when the cabinet operation is pieced together in both sides; 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 both sides uninterrupted power supply expandable type ring main unit, be provided with basic bus, two sections in it and treat extended busbar and three-station, treat that extended busbar is located at respectively the two ends of basic bus for two sections, treat that extended busbar is connected with the three-station moving contact respectively for two sections, the fixed contact of three-station is connected with basic bus.The basis bus can connect plural 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.
Both sides uninterrupted power supply expandable type ring main units (hereinafter to be referred as ring main unit) both sides treat that the outer tube of extended busbar 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, both sides 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 4-6 face ring main unit 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, 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 uninterrupted power supply expandable type ring main unit expansion of both sides of the present invention;
Fig. 3 is the circuit diagram during uninterrupted power supply expandable type ring main unit both sides, both sides of the present invention are all expanded;
Fig. 4 is the circuit diagram after uninterrupted power supply expandable type ring main unit both sides, both sides of the present invention are all expanded;
Fig. 5 is that both sides of the present invention uninterrupted power supply expandable type 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, both sides of the present invention uninterrupted power supply expandable type ring main unit, be provided with basic bus 11, two sections in it and treat extended busbar 12,13 and at least three three-stations 14, two sections described extended busbars 12,13 for the treatment of are located at respectively the two ends of described basic bus 11, two sections described extended busbars for the treatment of are connected with the moving contact of described three-station 14 respectively, and the fixed contact of described three-station 14 is connected with described basic bus 11.Described three-station 14 also is provided with ground connection station 18.
When piecing together the cabinet operation; pass through grid switching operation; in the situation of not interrupting device power supply; to treat three-station 14 power failures of extended busbar 12,13 sides and moving contact be beaten at earthing position; 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, three-station 14 is three-stations load switch.
For ease of expanding new ring main unit, treat that extended busbar 12,13 outer end are provided with sleeve pipe, and adopt the sealing of insulation plug.
Both sides 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 (only showing with one-sided expansion situation) when uninterrupted power supply expandable type ring main unit unit during as reserve tank; Its two, when uninterrupted power supply expandable type ring main unit unit as the expansion practical operation situation of outgoing line cabinet (charged) (only showing with one-sided expansion situation).
One, the expansion practical operation situation when uninterrupted power supply expandable type ring main unit unit during as reserve tank
When 1) normally moving, both sides treat that extended busbar is not charged, this reserve tank treat the extended busbar outer tube with insulation plug sealing, 14 dozens of reserve tank three-stations are at earthing position.
When 2) expanding, beat behind earthing position at the moving contact of confirming reserve tank three-station 14, take apart and originally treat extended busbar outer tube insulator seal plug, switch cubicle and the outlet cable newly-increased bus being installed and being increased newly.
3) with 14 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 14 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 14 also is in "on" position, and described ring main unit front sleeve pipe cable outlet is charged, and both sides treat that extended busbar 12,13 outer tube are with insulation plug sealing (operational mode such as Fig. 2).
2) before the expansion, carrying out first grid switching operation turns for load, then separate ring main unit load switch 14, and the other end on-load switch of outlet cable separately, affirmation without electricity after, 14 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 such as Fig. 3) are installed.
3) with 14 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 14 that closes send electricity more one by one, whole expansion project complete (operational mode such as Fig. 4).
As shown in Figure 5, they can also be as emergent comprehensive bypass operation car 16 power supplys " socket " of 10kV.Interim ring main unit 17 can be connected with the either side of both sides uninterrupted power supply expandable type ring main unit, has the uninterrupted power supply extendable functions, provides easily high voltage source for the emergent comprehensive bypass operation car of 10kV 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 (3)
1. both sides uninterrupted power supply expandable type ring main unit, it is characterized in that, be provided with basic bus, two sections in it and treat extended busbar and three-station, treat that extended busbar is located at respectively the two ends of basic bus for two sections, treat that extended busbar is connected with the three-station moving contact respectively for two sections, the fixed contact of three-station is connected with basic bus.
2. both sides according to claim 1 uninterrupted power supply expandable type ring main unit is characterized in that three-station is three-stations load switch.
3. both sides according to claim 1 uninterrupted power supply expandable type ring main unit is characterized in that, treats that the outer end of extended busbar is provided with sleeve pipe, and adopts the sealing of insulation plug.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012105844271A CN103036160A (en) | 2012-12-28 | 2012-12-28 | Extensible type ring main unit with no-break power supply on two sides |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012105844271A CN103036160A (en) | 2012-12-28 | 2012-12-28 | Extensible type ring main unit with no-break power supply on two sides |
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| Publication Number | Publication Date |
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| CN103036160A true CN103036160A (en) | 2013-04-10 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012105844271A Pending CN103036160A (en) | 2012-12-28 | 2012-12-28 | Extensible type ring main unit with no-break power supply on two sides |
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| CN (1) | CN103036160A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103812041A (en) * | 2014-02-21 | 2014-05-21 | 国网湖南省电力公司带电作业中心 | Method for overhauling ring main unit of 10kV cable circuit without switching power supply off |
| 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 |
| CN106058648A (en) * | 2016-06-15 | 2016-10-26 | 国网浙江省电力公司嘉兴供电公司 | Charged extensible bus system of ring main unit |
| 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 (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN200941534Y (en) * | 2006-08-24 | 2007-08-29 | 上海中发电气(集团)有限公司 | Back-to-back connection structure of switch cabinet |
| CN100345235C (en) * | 2003-12-26 | 2007-10-24 | 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 |
| CN202978005U (en) * | 2012-12-28 | 2013-06-05 | 广州供电局有限公司 | Bilaterally/uninterruptedly-powered extensible-type ring main unit |
-
2012
- 2012-12-28 CN CN2012105844271A patent/CN103036160A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100345235C (en) * | 2003-12-26 | 2007-10-24 | 株式会社日立制作所 | Vacuum switchgear system |
| CN200941534Y (en) * | 2006-08-24 | 2007-08-29 | 上海中发电气(集团)有限公司 | Back-to-back connection structure of switch cabinet |
| CN201392989Y (en) * | 2009-02-10 | 2010-01-27 | Abb技术有限公司 | Top incoming and outgoing line switch cabinet |
| CN202978005U (en) * | 2012-12-28 | 2013-06-05 | 广州供电局有限公司 | Bilaterally/uninterruptedly-powered extensible-type ring main unit |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103812041A (en) * | 2014-02-21 | 2014-05-21 | 国网湖南省电力公司带电作业中心 | Method for overhauling ring main unit of 10kV cable circuit without switching power supply off |
| CN106058648A (en) * | 2016-06-15 | 2016-10-26 | 国网浙江省电力公司嘉兴供电公司 | Charged extensible bus system of ring main unit |
| 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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| C53 | Correction of patent of invention or patent application | ||
| CB03 | Change of inventor or designer information |
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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| COR | Change of bibliographic data |
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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| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20130410 |