CN107979090A - Power distribution network three returns one group of topological structure - Google Patents
Power distribution network three returns one group of topological structure Download PDFInfo
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- CN107979090A CN107979090A CN201711298810.XA CN201711298810A CN107979090A CN 107979090 A CN107979090 A CN 107979090A CN 201711298810 A CN201711298810 A CN 201711298810A CN 107979090 A CN107979090 A CN 107979090A
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Classifications
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- H02J3/005—
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J3/00—Circuit arrangements for ac mains or ac distribution networks
- H02J3/04—Circuit arrangements for ac mains or ac distribution networks for connecting networks of the same frequency but supplied from different sources
- H02J3/06—Controlling transfer of power between connected networks; Controlling sharing of load between connected networks
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Remote Monitoring And Control Of Power-Distribution Networks (AREA)
Abstract
The present invention relates to a kind of power distribution network three to return one group of topological structure,The 3rd time distribution line is back to including first,Every time distribution line includes some ring-main units and part of path,Some ring-main units are connected by part of path,First,Two times distribution line ends are connected through first end ring-main unit,Inlet wire or the outgoing line interval switch of first end ring-main unit are used as the first interconnection switch,First,Include at least one outgoing interval switch in non-end ring-main unit on two times distribution lines respectively and be used as the second interconnection switch and the 3rd interconnection switch,Inlet wire or the outgoing line interval switch of second end ring-main unit on 3rd time distribution line are used as the 4th interconnection switch,Non-end ring-main unit on 3rd time distribution line includes at least one outgoing interval switch and is used as the 5th interconnection switch,4th interconnection switch connects the 3rd interconnection switch,5th interconnection switch connects the second interconnection switch,Remaining all switch in ring-main unit are block switch,Flexibility is high.
Description
Technical field
The present invention relates to power domain, and one group of topological structure is returned more particularly to a kind of power distribution network three.
Background technology
Domestic and international Urban Medium Voltage Distribution Network generally uses ring network structure, its method of operation is divided into open loop operation and operation with closed ring
Two kinds.Wherein, the interconnection switch between each distribution line that open loop operation mode, i.e. normal operation phase are mutually got in touch with is normally opened, single
After feedback line failure, the block switch by opening trouble point both sides realizes Fault Isolation, hereafter closes interconnection switch to non-event
Hinder the power supply of section.Compared with open loop operation mode, operation with closed ring mode interconnection switch is normally closed, will not cause non-faulting section in short-term
Have a power failure, there is higher reliability in theory, be the common Connection Mode of current domestic distribution.
However, using operation with closed ring mode, since the distribution line intercommunicated is unable to flexible adaptation load development
And the problem of changing topological structure, being not easy to management and running, be easy to cause circuit heavy-overload or circuit underloading.Moreover, closed loop is transported
Line mode circuit highest average load factor is only 50%, and power grid construction is of high cost, causes the waste of power equipment, therefore, is passed
The power distribution network wiring flexibility of system is low.
The content of the invention
Based on this, it is necessary to for traditional power distribution network wiring flexibility it is low the problem of, there is provided a kind of power distribution network three returns one
Group topological structure.
A kind of power distribution network three returns one group of topological structure, including first time distribution line, second time distribution line and the 3rd time
Distribution line, first time distribution line, second time distribution line and the 3rd time distribution line include some
Ring-main unit and part of path, some ring-main units are connected by the part of path, first time distribution line and described
The end of second time distribution line is connected through first end ring-main unit, the inlet wire interval of the first end ring-main unit or is gone out
Line interval, which switchs, is used as the first interconnection switch, the non-end ring on first time distribution line and second time distribution line
Switched respectively including at least one outgoing interval in net unit and be used as the second interconnection switch and the 3rd interconnection switch, the described 3rd
The inlet wire interval of the second end ring-main unit returned on distribution line or outgoing line interval switch are used as the 4th interconnection switch, and described the
Non-end ring-main unit on three times distribution lines includes at least one outgoing interval switch and is used as the 5th interconnection switch, institute
State the 4th interconnection switch and connect the 3rd interconnection switch, the 5th interconnection switch connects second interconnection switch, described
Remaining all switch in ring-main unit are block switch.
Above-mentioned power distribution network three returns one group of topological structure, is got in touch with using three times distribution line open loops, every time distribution line has
The wiring patterns for 1 circuit group that two contact points are formed, every time distribution line are formed by some ring-main units and part of path,
Every time distribution line is connected by 2 interconnection switches with All other routes, wherein, first time distribution line and second time distribution wire
Road shares an interconnection switch, can realize that electric load can be in three loop lines by the conversion of interconnection switch and block switch
The redistribution on road, so that the problem of being more flexibly adapted to the development of load, overcoming operation with closed ring mode flexibility insufficient.
Brief description of the drawings
Fig. 1 is that power distribution network three returns one group of topological structure structure chart in an embodiment；
Fig. 2 is that power distribution network three returns one group of topological structure structure diagram in an embodiment.
Embodiment
In one embodiment, as shown in Figure 1, a kind of power distribution network three returns one group of topological structure, including first time distribution wire
The distribution line 10 of road 9, second times and the 3rd time distribution line 11, first time distribution line, 9, second times distribution lines 10 and the 3rd
Returning distribution line 11 includes some ring-main units and part of path, and some ring-main units are connected by part of path, first time distribution
The end of circuit 9 and second time distribution line 10 is connected through first end ring-main unit 2, the inlet wire of first end ring-main unit 2
Interval or outgoing line interval, which switch, is used as the first interconnection switch 4, the non-end on first time distribution line 9 and second time distribution line 10
Include at least one outgoing interval switch in end ring net unit 1 respectively and be used as the second interconnection switch 5 and the 3rd interconnection switch 6,
The inlet wire interval of second end ring-main unit on 3rd time distribution line 11 or outgoing line interval switch are used as the 4th interconnection switch
7, the non-end ring-main unit 1 on the 3rd time distribution line 11 includes at least one outgoing interval switch as the 5th contact
Switch 8, the 4th interconnection switch 7 connect the 3rd interconnection switch 6, and the 5th interconnection switch 8 connects the second interconnection switch 5, ring-main unit
All switches of remaining interior are block switch.
Specifically, some ring-main units include non-end ring-main unit and end ring-main unit, first time 9 He of distribution line
Second time distribution line 10 is each powered to ring-main unit, the end warp of first time distribution line 9 and second time distribution line 10
One end ring-main unit connects, formation closed loop ring network structure, and the inlet wire interval or outgoing line interval in line end ring-main unit are opened
Pass is used as the first interconnection switch 4, the switch that inlet wire interval or outgoing line interval switch flow into or from for electric current；Respectively at first time
1 non-end ring-main unit 1 is selected on distribution line 9 and second time distribution line 10, is at least set in non-end ring-main unit 1
1 face outgoing interval switch is used as interconnection switch, i.e. the second interconnection switch 5 and the 3rd interconnection switch 6, the 3rd time distribution line 11
After powering to ring-main unit, the inlet wire interval of the second end ring-main unit on the 3rd time distribution line 11 or outgoing line interval switch
As the 4th interconnection switch 7, the non-end ring-main unit 1 on the 3rd time distribution line 11 includes at least one interconnection switch and is
5th interconnection switch 8, the 4th interconnection switch 7 through second end ring-main unit are connected to the non-end of second time distribution line 10
3rd interconnection switch 6 of ring-main unit 1, the 5th interconnection switch 8 through non-end ring-main unit 1 are connected to first time distribution line
Interconnection switch two on 9.
When some node on first time distribution line, 9, second times distribution lines 10 or the 3rd time distribution line 11 because event
When barrier is stopped transport, trouble point is isolated by the ring-main unit of upstream and downstream, and non-faulting section restores electricity after interconnection switch closure.
In one embodiment, as shown in Fig. 2, power distribution network three, which returns one group of topological structure, further includes the first busbar 12, second
Busbar 13 and triple bus-bar 14, first time distribution line 9 connect the first busbar 12, and second time distribution line 10 connects the second busbar
13, the 3rd time distribution line 11 connects triple bus-bar 14.
Specifically, 1 time medium-voltage distribution circuit is each drawn from independent two sections of busbares (the first busbar 12 and the second busbar 13),
That is first time distribution line 9 and second time distribution line 10,1 time medium-voltage distribution, i.e. the 3rd time distribution are drawn from triple bus-bar 14
Circuit 11, the load often powered on loop line road are no more than the 67% of thermostabilization limit supply load.
In one embodiment, power distribution network three returns one group of topological structure and further includes the first substation 15 and the second substation
16, the first busbar 12 and the second busbar 13 are arranged in the first substation 15, and triple bus-bar 14 is arranged in the second substation 16.
Specifically, the first busbar 12, the second busbar 13,14 line power of triple bus-bar are all from substation, ring-main unit
Connected by distribution line.
In one embodiment, 4 to the 5th interconnection switch 8 of the first interconnection switch is normal open switch, and block switch is normally closed
Switch.
Specifically, during normal operation, block switch is in closure state, and interconnection switch, which is in, cut-offs state.
In one embodiment, 4 to the 5th interconnection switch 8 of the first interconnection switch and block switch configure power distribution automation
Equipment.In the present embodiment, power distribution automation equipment is distribution power automation terminal DTU.
Specifically, distribution power automation terminal DTU (Data Transfer unit, data transmission unit) can implement event rapidly
Barrier positioning, distribution line is divided into one section one section by block switch, so when there is node failure, can faulty section circuit every
Leave, other non-faulting sections continue to power, and block switch and interconnection switch are all transformed by power distribution automation, allow them to have
Standby certain control logic and realize controllable, pass through cut-offfing for power distribution automation equipment remote-control block switch and interconnection switch.
In one embodiment, 4 to the 5th interconnection switch 8 of the first interconnection switch and block switch are breaker.Another
In outer one embodiment, 4 to the 5th interconnection switch 8 of the first interconnection switch and block switch are on-load switch.
Specifically, breaker is the electric current for referring to close, carry and cut-off under normal loop condition and can close, advise
The switching device of the electric current under abnormal loop condition is carried and cut-off in the fixed time, and block switch works as line if breaker
During the failure of road, it can act tripping, when the switch in block switch is on-load switch, then cannot horse back tripping, to wait and match somebody with somebody
, could tripping after electric line has a power failure completely.
As shown in Fig. 2, (power distribution automation is passed through when distribution line 1 (corresponding first time distribution line 9) have failed
Equipment implements rapidly fault location, and failure occurs in first ring-main unit), first ring-main unit tripping, then with
First interconnection switch 4 of 1 end ring-main unit of electric line closes, and such 1 remaining load of distribution line can be by distribution wire
Road 2 powers, or the second interconnection switch 5 of 1 non-end ring-main unit 1 of distribution line is closed, and such distribution line 1 is remaining
Load can be powered by distribution line 3.
Power distribution network is applied to using " open loop operation+centralization power distribution automation " mode, after a feedback line failure, is passed through
Power distribution automation equipment implements rapidly fault location and isolation, and fast recovery of power supply, is suitable for, distribution higher to reliability requirement
The urban electricity supply area of circuit gallery resource anxiety.
In a more detailed application scenarios, a kind of power distribution network three returns one group of topological structure, includes 2 power transformations
To stand, 3 sections of busbares and 3 times distribution lines, every time distribution line has the wiring patterns for 1 circuit group that two contact points are formed,
Every time distribution line is formed by some ring-main units and part of path, and every time distribution line passes through 2 interconnection switches and other
Connection, wherein, first time distribution line 9 and second time distribution line 10 share an interconnection switch, are put down in 1 circuit group
It is 67% per loop line road highest load factor, the ring-main unit with interconnection switch includes block switch at the same time and contact is opened
Close, block switch be in closure state during normal operation, and interconnection switch is in cut-offfing state.Every time line power is all from power transformation
To stand, ring-main unit configures power distribution automation equipment by connection on the block switch and interconnection switch in ring-main unit,
When some node on distribution line because when failure is stopped transport, trouble point is isolated by the ring-main unit of upstream and downstream, non-faulting section
Restore electricity after interconnection switch closure.
In one embodiment, wiring process is to draw first time distribution line 9 from the first busbar 12, from the second busbar 13
Second time distribution line 10 is drawn, the 3rd time distribution line 11 is drawn from triple bus-bar 14；First time distribution line 9 and second time
The end of distribution line 10 is connected through first end ring-main unit 2, between the inlet wire interval or outlet in first end ring-main unit 2
Separate pass and be used as the first interconnection switch 4；Select a non-end respectively on first time distribution line 9 and second time distribution line 10
Ring-main unit 1, is respectively provided in the non-end ring-main unit 1 on first time distribution line 9 and second time distribution line 10
Few outgoing interval switch is used as the second interconnection switch 5 and the 3rd interconnection switch 6；By on the 3rd time distribution line 11
The inlet wire interval of two end ring-main units or outgoing line interval, which switch, is used as the 4th interconnection switch 7, on the 3rd time distribution line 11
Non-end ring-main unit 1 includes at least one outgoing interval switch and is used as the 5th interconnection switch 8, second end ring-main unit
In the 4th interconnection switch 7 connect second time distribution line 10 the 3rd interconnection switch 6, the 5th interconnection switch 8 connection second
Network switch 5.
Above-mentioned power distribution network three returns one group of topological structure, is got in touch with using three times distribution line open loops, every time distribution line has
The wiring patterns for 1 circuit group that two contact points are formed, every time distribution line are formed by some ring-main units and part of path,
Every time distribution line is connected by 2 interconnection switches with All other routes, wherein, first time distribution line 9 and second time distribution
Circuit 10 shares an interconnection switch, can realize that electric load can be three by the conversion of interconnection switch and block switch
The redistribution of distribution line is returned, so as to more be flexibly adapted to the development of load, i.e., when three times distribution lines wherein have one
Circuit breaks down, and the load transfer of the faulty line can not had on the circuit of failure to other twice, in addition, using 3
Distribution line open loop contact is returned, theoretical highest circuit Rate of average load is 66.7%, far above operation with closed ring mode 50% most
Elevated track Rate of average load, solves existing power distribution network wiring and is not easy to management and running, flexibility deficiency, construction cost height, electric power
The problems such as utilization rate of equipment and installations is insufficient.
Each technical characteristic of embodiment described above can be combined arbitrarily, to make description succinct, not to above-mentioned reality
Apply all possible combination of each technical characteristic in example to be all described, as long as however, the combination of these technical characteristics is not deposited
In contradiction, the scope that this specification is recorded all is considered to be.
Embodiment described above only expresses the several embodiments of the present invention, its description is more specific and detailed, but simultaneously
Cannot therefore it be construed as limiting the scope of the patent.It should be pointed out that come for those of ordinary skill in the art
Say, without departing from the inventive concept of the premise, various modifications and improvements can be made, these belong to the protection of the present invention
Scope.Therefore, the protection domain of patent of the present invention should be determined by the appended claims.
Claims (8)
1. a kind of power distribution network three returns one group of topological structure, it is characterised in that including first time distribution line, second time distribution line
It is equal with the 3rd time distribution line, first time distribution line, second time distribution line and the 3rd time distribution line
Including some ring-main units and part of path, some ring-main units are connected by the part of path, first time distribution wire
Road is connected with the end of second time distribution line through first end ring-main unit, the inlet wire of the first end ring-main unit
Interval or outgoing line interval, which switch, is used as the first interconnection switch, on first time distribution line and second time distribution line
Include at least one outgoing interval switch in non-end ring-main unit respectively and be used as the second interconnection switch and the 3rd interconnection switch,
The inlet wire interval of second end ring-main unit on the 3rd time distribution line or outgoing line interval switch are opened as the 4th contact
Close, the non-end ring-main unit on the 3rd time distribution line includes at least one outgoing interval switch and is used as 5-linked
Network switchs, and the 4th interconnection switch connects the 3rd interconnection switch, the 5th interconnection switch connection second contact
Switch, all switches of remaining in the ring-main unit are block switch.
2. power distribution network three according to claim 1 returns one group of topological structure, it is characterised in that further includes the first busbar,
Two busbares and triple bus-bar, first time distribution line connect first busbar, and second time distribution line connects institute
The second busbar is stated, the 3rd time distribution line connects the triple bus-bar.
3. power distribution network three according to claim 2 returns one group of topological structure, it is characterised in that further include the first substation and
Second substation, first busbar and second busbar are arranged in first substation, and the triple bus-bar is set
In in second substation.
4. power distribution network three according to claim 1 returns one group of topological structure, it is characterised in that first interconnection switch is extremely
5th interconnection switch is normal open switch, and the block switch is normally closed switch.
5. power distribution network three according to claim 1 returns one group of topological structure, it is characterised in that first interconnection switch is extremely
5th interconnection switch and the block switch configure power distribution automation equipment.
6. power distribution network three according to claim 5 returns one group of topological structure, it is characterised in that the power distribution automation equipment
For distribution power automation terminal DTU.
7. power distribution network three according to claim 1 returns one group of topological structure, it is characterised in that first interconnection switch is extremely
5th interconnection switch and the block switch are breaker.
8. power distribution network three according to claim 1 returns one group of topological structure, it is characterised in that first interconnection switch is extremely
5th interconnection switch and the block switch are on-load switch.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201711298810.XA CN107979090A (en) | 2017-12-08 | 2017-12-08 | Power distribution network three returns one group of topological structure |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201711298810.XA CN107979090A (en) | 2017-12-08 | 2017-12-08 | Power distribution network three returns one group of topological structure |
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| CN207588452U (en) * | 2017-12-08 | 2018-07-06 | 广州供电局有限公司 | Power distribution network three returns one group of topological structure |
-
2017
- 2017-12-08 CN CN201711298810.XA patent/CN107979090A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN204597482U (en) * | 2015-03-02 | 2015-08-26 | 国家电网公司 | A kind of " 3-1 " wiring patterns based on universe urbanization Modern power distribution net |
| CN204928156U (en) * | 2015-09-16 | 2015-12-30 | 国网江西省电力公司南昌供电分公司 | Distribution network bridge joint line structure |
| CN105244872A (en) * | 2015-10-23 | 2016-01-13 | 国家电网公司 | Medium voltage cable network networking method |
| CN105576811A (en) * | 2016-02-19 | 2016-05-11 | 国网新疆电力公司经济技术研究院 | Power distribution network adopting four-loop-one-group crossed connection wiring |
| CN106684808A (en) * | 2016-09-08 | 2017-05-17 | 珠海电力设计院有限公司 | Double closed-loop/multiple closed-loop interconnected power distribution network wiring structure and power supply system |
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Effective date of registration: 20200918 Address after: 510620 Tianhe District, Guangzhou, Tianhe South Road, No. two, No. 2, No. Applicant after: Guangzhou Power Supply Bureau of Guangdong Power Grid Co.,Ltd. Address before: 510620 Tianhe District, Guangzhou, Tianhe South Road, No. two, No. 2, No. Applicant before: GUANGZHOU POWER SUPPLY Co.,Ltd. |
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