CN107968401A - Power distribution network four returns one group of topological structure - Google Patents
Power distribution network four returns one group of topological structure Download PDFInfo
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- CN107968401A CN107968401A CN201711297555.7A CN201711297555A CN107968401A CN 107968401 A CN107968401 A CN 107968401A CN 201711297555 A CN201711297555 A CN 201711297555A CN 107968401 A CN107968401 A CN 107968401A
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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 four to return one group of topological structure,The 4th time distribution line is back to including first,Every time distribution line includes some ring-main units and 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,3rd,Four times distribution line ends are connected through second end ring-main unit,The inlet wire interval of second end ring-main unit or outgoing line interval switch are used as the second interconnection switch,First,Include an outgoing interval switch in non-end ring-main unit on two times distribution lines respectively and be used as the 3rd interconnection switch and the 4th interconnection switch,Include an outgoing interval switch in non-end ring-main unit on 3rd time distribution line and the 4th time distribution line respectively and be used as the 5th interconnection switch and the 6th interconnection switch,5th interconnection switch connects the 3rd interconnection switch,6th interconnection switch connects the 4th interconnection switch,Distribution 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 four.
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 four returns one
Group topological structure.
A kind of power distribution network four returns one group of topological structure, including first time distribution line, second time distribution line, matches somebody with somebody for the 3rd time
Electric line and the 4th time distribution line, first time distribution line, second time distribution line, the 3rd time distribution wire
Road and the 4th time distribution line include some ring-main units and part of path, and some ring-main units are connected by the part of path
Connecing, first time distribution line is connected with the end of second time distribution line through first end ring-main unit, and described
The inlet wire interval of one end ring-main unit or outgoing line interval switch are used as the first interconnection switch, the 3rd go back to distribution line and institute
The end of the 4th go back to distribution line is stated to connect through second end ring-main unit, the inlet wire interval of the second end ring-main unit or
Outgoing line interval, which switchs, is used as the second interconnection switch, the non-end on first time distribution line and second time distribution line
Switched respectively including an outgoing interval in ring-main unit and be used as the 3rd interconnection switch and the 4th interconnection switch, described 3rd time
Include an outgoing interval switch in non-end ring-main unit on distribution line and the 4th time distribution line respectively to make
For the 5th interconnection switch and the 6th interconnection switch, the 5th interconnection switch connects the 3rd interconnection switch, and the described 6th
Network, which switchs, connects the 4th interconnection switch, and all switches of remaining in the ring-main unit are block switch.
Above-mentioned power distribution network four returns one group of topological structure, is got in touch with using four 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, and the 3rd time distribution line and the 4th time distribution line, which share an interconnection switch, can pass through contact
The conversion of switch and block switch, realizes that electric load can be in the redistribution on four loop line roads, so as to more be flexibly adapted to
The development of load, the problem of overcoming operation with closed ring mode flexibility insufficient.
Brief description of the drawings
Fig. 1 is that power distribution network four returns one group of topological structure structure chart in an embodiment；
Fig. 2 is that power distribution network four 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 four returns one group of topological structure, including first time distribution wire
The distribution line 10 of road 9, second times, the 3rd time distribution line 11 and the 4th time distribution line 12, first time distribution line 9, second
Returning distribution line 10, the 3rd time distribution line 11 and the 4th time distribution line 12 includes some ring-main units and part of path, if
Dry ring-main unit is connected by part of path, and the end of first time distribution line 9 and second time distribution line 10 is through first end ring
Net unit 14 connects, and the inlet wire interval of first end ring-main unit 14 or outgoing line interval switch are used as the first interconnection switch 20, the
The end of three times distribution lines 11 and the 4th time distribution line 12 is connected through second end ring-main unit 15, second end looped network list
The inlet wire interval of member 15 or outgoing line interval switch are used as the second interconnection switch 15, first time distribution line 9 and second time distribution wire
Include an outgoing interval switch in non-end ring-main unit 16 and 17 on road 10 respectively and be used as 22 He of the 3rd interconnection switch
4th interconnection switch 23, in the non-end ring-main unit 18 and 19 on the 3rd time distribution line 11 and the 4th time distribution line 12 point
Not Bao Kuo outgoing interval switch be used as the 5th interconnection switch 24 and the 6th interconnection switch 25, the 5th interconnection switch 24 connects
3rd interconnection switch 22, the 6th interconnection switch 25 connect the 4th interconnection switch 23, all switches of remaining in ring-main unit for point
Duan Kaiguan.
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
First end ring-main unit 14 connects, formation closed loop ring network structure, between the inlet wire interval or outlet in line end ring-main unit
Separate pass and be used as the first interconnection switch 20, the switch that inlet wire interval or outgoing line interval switch flow into or from for electric current；3rd time
Distribution line 11 and the 4th time distribution line 12 are powered to ring-main unit, the 3rd time distribution line 11 and the 4th time distribution line 12
End connected through second end ring-main unit 15, the inlet wire interval of second end ring-main unit 15 or outgoing line interval switch conduct
Second interconnection switch 15, selectes 1 non-end ring-main unit on first time distribution line 9 and second time distribution line 10 respectively
Respectively non-end ring-main unit 16 and non-end ring-main unit 17, set 1 face outgoing to be spaced apart in non-end ring-main unit
Pass is used as interconnection switch, i.e. the 3rd interconnection switch 22 and the 4th interconnection switch 23, respectively in the 3rd time distribution line 11 and the 4th
It is respectively non-end ring-main unit 18 and non-end ring-main unit 19 to return on distribution line 12 and select 1 non-end ring-main unit,
1 face outgoing interval switch is set to be used as interconnection switch, i.e. the 5th interconnection switch 24 and the 6th contact in non-end ring-main unit
Switch 25, the 5th interconnection switch 24 of the non-end ring-main unit 18 through the 3rd time distribution line 11 is connected to first time distribution wire
3rd interconnection switch 22 of the non-end ring-main unit 16 on road 9, the non-end ring-main unit 19 through the 4th time distribution line 12
6th interconnection switch 25 is connected to the 4th interconnection switch 23 of the non-end ring-main unit 17 of second time distribution line 10, remaining does not have
Its in selected non-end ring-main unit 13, the non-end ring-main unit 16-19 and end ring-main unit 14 and 15 chosen
Remaining switch is block switch.
When first time distribution line, 9, second times distribution lines 10, the 3rd time distribution line 11 or the 4th time distribution line 12
Some upper node is because when failure is stopped transport, and trouble point is isolated by the ring-main unit of upstream and downstream, and non-faulting section is in interconnection switch
Restore electricity after closure.
In one embodiment, power distribution network four returns one group of topological structure and further includes the first busbar 5, the mother of the second busbar the 7, the 3rd
6 and the 4th busbar 4 of line, first time distribution line 9 connect the first busbar 5, and second time distribution line 10 connects the second busbar 7, the
Three times distribution lines 11 connect triple bus-bar 6, and the 4th time distribution line 12 connects the 4th busbar 4.
Specifically, 1 time medium-voltage distribution circuit is each drawn from independent two sections of busbares (the first busbar 5 and the second busbar 7), i.e.,
First time distribution line 9 and second time distribution line 10,1 time middle voltage distribution line is each drawn from 6 and the 4th busbar 4 of triple bus-bar
Road, i.e. the 3rd time distribution line 11 and the 4th time distribution line 12, the load often powered on loop line road are no more than the thermostabilization limit
The 75% of supply load.
In one embodiment, power distribution network four returns one group of topological structure and further includes the first substation and the second substation, the
One busbar 5 and the second busbar 7 are arranged in the first substation, and 6 and the 4th busbar 4 of triple bus-bar is arranged in the second substation.
Specifically, the first busbar 5, the second busbar 7, triple bus-bar 6 and 4 line power of the 4th busbar are all from substation,
Ring-main unit is connected by distribution line.
In another embodiment, power distribution network four return one group of topological structure further include the first substation 1, the second substation 3,
3rd substation 2 and the 4th substation 4, the first busbar 5 are arranged in the first substation 1, and the second busbar 7 is arranged at the second power transformation
Stand in 3, triple bus-bar 6 is arranged in the 3rd substation 2, and the 4th busbar 4 is arranged in the 4th substation 4.
In one embodiment, 20 to the 6th interconnection switch 25 of the first interconnection switch is normal open switch, and block switch is normal
Make and break is closed.
Specifically, during normal operation, block switch is in closure state, and interconnection switch, which is in, cut-offs state.
In one embodiment, it is automatic to configure distribution for 20 to the 6th interconnection switch 25 of the first interconnection switch and block switch
Change 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, 20 to the 6th interconnection switch 25 of the first interconnection switch and block switch are breaker.
In another embodiment, 20 to the 6th interconnection switch 25 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 20 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 15 of 1 non-end ring-main unit 16 of distribution line is closed, and such distribution line 1 is surplus
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 four returns one group of topological structure, includes 4 power transformations
To stand, 4 sections of busbares and 4 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 some ring-main units are connected by part of path, every time distribution
Circuit is connected by 2 interconnection switches with All other routes, wherein, first time distribution line 9 and second time distribution line 10 are common
With an interconnection switch, the 3rd time wiring line and the 4th time distribution line 12 share an interconnection switch, are put down in 1 circuit group
It is 75% 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 5, is drawn from the second busbar 7
Go out second time distribution line 10, the 3rd time distribution line 11 is drawn from triple bus-bar 6, the 4th time distribution is drawn from the 4th busbar 4
The end of circuit 12, first time distribution line 9 and second time distribution line 10 is connected through first end ring-main unit 14, the first end
Inlet wire interval or outgoing line interval switch in end ring net unit 14 are used as the first interconnection switch 20.In first time 9 He of distribution line
It is respectively non-end ring-main unit 16 and non-end looped network to select a non-end ring-main unit on second time distribution line 10 respectively
Unit 17, sets a feedback in the non-end ring-main unit on first time distribution line 9 and second time distribution line 10 respectively
Outgoing line interval switch is used as the 3rd interconnection switch 22 and the 4th interconnection switch 23；3rd time distribution line 11 and the 4th time distribution wire
The end on road 12 is connected through second end ring-main unit 15, the inlet wire interval of second end ring-main unit 15 or outgoing line interval switch
As the second interconnection switch 15, the non-end ring-main unit on the 3rd time distribution line 11 and the 4th time distribution line 12 is respectively
Include an outgoing interval switch in non-end ring-main unit 18 and non-end ring-main unit 19 respectively to open as the 5th contact
24 and the 6th interconnection switch 25 of pass, the 5th interconnection switch 24 of the non-end ring-main unit 18 through the 3rd time distribution line 11 connect
In the 3rd interconnection switch 22 of the non-end ring-main unit 16 of first time distribution line 9, the non-end through the 4th time distribution line 12
6th interconnection switch 25 of end ring net unit 19 is connected to the tetrad of the non-end ring-main unit 17 of second time distribution line 10
Network switch 23.
Above-mentioned power distribution network four returns one group of topological structure, is got in touch with using four times distribution line open loops, can pass through interconnection switch
With the conversion of block switch, realize that electric load can be in the redistribution on four loop line roads, so as to more be flexibly adapted to load
Development, i.e., when four times distribution lines wherein have a circuit to break down, the load transfer of the faulty line can be arrived
Do not have on the circuit of failure for other three times, in addition, being got in touch with using four times distribution line open loops, theoretical highest circuit Rate of average load is
75%, far above the highest circuit Rate of average load of operation with closed ring mode 50%, solve existing power distribution network wiring and be not easy to dispatch
Management, flexibility deficiency, the problems such as construction cost is high, power equipment utilization rate 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 (9)
1. a kind of power distribution network four returns one group of topological structure, it is characterised in that including first time distribution line, second time distribution wire
Road, the 3rd time distribution line and the 4th time distribution line, it is first time distribution line, second time distribution line, described
3rd time distribution line and the 4th time distribution line include some ring-main units and part of path, and some ring-main units pass through
The end of the part of path connection, first time distribution line and second time distribution line is through first end ring-main unit
Connection, the inlet wire interval of the first end ring-main unit or outgoing line interval, which switch, is used as the first interconnection switch, described 3rd time
Distribution line is connected with the end of the 4th time distribution line through second end ring-main unit, the second end ring-main unit
Inlet wire interval or outgoing line interval switch be used as the second interconnection switch, first time distribution line and second time distribution wire
Include an outgoing interval switch in non-end ring-main unit on road respectively to open as the 3rd interconnection switch and the 4th contact
Close, fed out respectively including one in the non-end ring-main unit on the 3rd time distribution line and the 4th time distribution line
Line interval switch is used as the 5th interconnection switch and the 6th interconnection switch, and the 5th interconnection switch connection the 3rd contact is opened
Close, the 6th interconnection switch connection the 4th interconnection switch, remaining all switch in the ring-main unit are opened for segmentation
Close.
2. power distribution network four according to claim 1 returns one group of topological structure, it is characterised in that further includes the first busbar,
Two busbares, triple bus-bar and the 4th busbar, first time distribution line connect first busbar, second time distribution wire
Road connects second busbar, and the 3rd time distribution line connects the triple bus-bar, the 4th time distribution line connection
4th busbar.
3. power distribution network four 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, the triple bus-bar and institute
The 4th busbar is stated to be arranged in second substation.
4. power distribution network four according to claim 2 returns one group of topological structure, it is characterised in that further include the first substation,
Second substation, the 3rd substation and the 4th substation, first busbar are arranged in first substation, and described second
Busbar is arranged in second substation, and the triple bus-bar is arranged in the 3rd substation, and the 4th busbar is set
It is placed in the 4th substation.
5. power distribution network four according to claim 1 returns one group of topological structure, it is characterised in that first interconnection switch is extremely
6th interconnection switch is normal open switch, and the block switch is normally closed switch.
6. power distribution network four according to claim 1 returns one group of topological structure, it is characterised in that first interconnection switch is extremely
6th interconnection switch and the block switch configure power distribution automation equipment.
7. power distribution network four according to claim 6 returns one group of topological structure, it is characterised in that the power distribution automation equipment
For distribution power automation terminal DTU.
8. power distribution network four according to claim 1 returns one group of topological structure, it is characterised in that first interconnection switch is extremely
6th interconnection switch and the block switch are breaker.
9. power distribution network four according to claim 1 returns one group of topological structure, it is characterised in that first interconnection switch is extremely
6th interconnection switch and the block switch are on-load switch.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711297555.7A CN107968401A (en) | 2017-12-08 | 2017-12-08 | Power distribution network four returns one group of topological structure |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201711297555.7A CN107968401A (en) | 2017-12-08 | 2017-12-08 | Power distribution network four returns one group of topological structure |
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| CN201711297555.7A Pending CN107968401A (en) | 2017-12-08 | 2017-12-08 | Power distribution network four returns one group of topological structure |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104767204A (en) * | 2015-03-02 | 2015-07-08 | 国家电网公司 | 3-1 wiring mode based on macrocosm urbanization modern power distribution network |
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2017
- 2017-12-08 CN CN201711297555.7A patent/CN107968401A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104767204A (en) * | 2015-03-02 | 2015-07-08 | 国家电网公司 | 3-1 wiring mode based on macrocosm urbanization modern power distribution network |
| 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 |
| CN207588451U (en) * | 2017-12-08 | 2018-07-06 | 广州供电局有限公司 | Power distribution network four returns one group of topological structure |
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Effective date of registration: 20200924 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. |