CN207588451U - 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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- CN207588451U CN207588451U CN201721722072.2U CN201721722072U CN207588451U CN 207588451 U CN207588451 U CN 207588451U CN 201721722072 U CN201721722072 U CN 201721722072U CN 207588451 U CN207588451 U CN 207588451U
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Abstract
The utility model is related to a kind of power distribution networks four to return one group of topological structure,The 4th time distribution line is back to including first,Every time distribution line includes several 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 as the first interconnection switch,Third,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 as the second interconnection switch,First,An outgoing interval switch is respectively included in non-end ring-main unit on two times distribution lines as third interconnection switch and the 4th interconnection switch,An outgoing interval switch is respectively included in the non-end ring-main unit that third is returned on distribution line and the 4th time distribution line as the 5th interconnection switch and the 6th interconnection switch,5th interconnection switch connects third interconnection switch,6th interconnection switch connects the 4th interconnection switch,Distribution flexibility is high.
Description
Technical field
The utility model is related to power domains, and one group of topological structure is returned more particularly to a kind of power distribution network four.
Background technology
For domestic and international Urban Medium Voltage Distribution Network generally using ring network structure, the method for 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, Fault Isolation is realized by the block switch for opening trouble point both sides, is hereafter closed 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, theoretically there is higher reliability, 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.
Utility model content
Based on this, it is necessary to for traditional power distribution network wiring flexibility it is low the problem of, a kind of power distribution network four is provided and returns one
Group topological structure.
A kind of power distribution network four returns one group of topological structure, returns and matches including first time distribution line, second time distribution line, third
Electric line and the 4th time distribution line, first time distribution line, second time distribution line, the third return distribution wire
Road and the 4th time distribution line include several ring-main units and part of path, and several ring-main units are connected by the part of path
It connecing, first time distribution line is connected with the end of second time distribution line through first end ring-main unit, and described
As the first interconnection switch, the third goes back to distribution line and institute for the inlet wire interval of one end ring-main unit or outgoing line interval switch
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
An outgoing interval switch is respectively included in ring-main unit as third interconnection switch and the 4th interconnection switch, the third is returned
An outgoing interval switch is respectively included in non-end ring-main unit on distribution line and the 4th time distribution line to make
For the 5th interconnection switch and the 6th interconnection switch, the 5th interconnection switch connects the third 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 of 1 circuit group that two contact points are formed, every time distribution line are made of several ring-main units and part of path,
Every time distribution line is connect by 2 interconnection switches with All other routes, wherein, first time distribution line and second time distribution wire
Road shares an interconnection switch, and third returns distribution line and the 4th time distribution line shares an interconnection switch and 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 adapt to more flexiblely
The development of load overcomes the problems, such as that operation with closed ring mode flexibility is insufficient.
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.
Specific 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, third return distribution line 11 and the 4th time distribution line 12, first time distribution line 9, second
It returns distribution line 10, third time distribution line 11 and the 4th time distribution line 12 includes several 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 as the second interconnection switch 15, first time distribution line 9 and second time distribution wire
An outgoing interval switch is respectively included in non-end ring-main unit 16 and 17 on road 10 as 22 He of third interconnection switch
4th interconnection switch 23, third, which is returned in the non-end ring-main unit 18 and 19 on distribution line 11 and the 4th time distribution line 12, divides
Not Bao Kuo outgoing interval switch as the 5th interconnection switch 24 and the 6th interconnection switch 25, the 5th interconnection switch 24 connects
Third 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, several 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 respectively 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 the switch that pass is flowed into or from as the first interconnection switch 20, inlet wire interval or outgoing line interval switch for electric current；Third is returned
Distribution line 11 and the 4th time distribution line 12 are powered to ring-main unit, and third returns 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
It closes as interconnection switch, i.e. 22 and the 4th interconnection switch 23 of third interconnection switch, returns distribution line 11 and the 4th in third respectively
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 in non-end ring-main unit as interconnection switch, i.e. the 5th interconnection switch 24 and the 6th contact
Switch 25, the 5th interconnection switch 24 that the non-end ring-main unit 18 of distribution line 11 is returned through third are connected to first time distribution wire
The third 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, third return 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
It restores electricity after closure.
In one embodiment, power distribution network four returns one group of topological structure and further includes the first busbar 5, the second busbar 7, third mother
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 third busbar 6, and the 4th time distribution line 12 connects the 4th busbar 4.
Specifically, 1 time medium-voltage distribution circuit is respectively 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 respectively draw 1 time middle voltage distribution line from 6 and the 4th busbar 4 of third busbar
Distribution line 11 and the 4th time distribution line 12 are returned in road, i.e. third, and per loop line, the load of road power supply is 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 set in the first substation, and 6 and the 4th busbar 4 of third busbar is set in the second substation.
Specifically, the first busbar 5, the second busbar 7, third busbar 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,
2 and the 4th substation 4 of third substation, the first busbar 5 are set in the first substation 1, and the second busbar 7 is set to the second power transformation
It stands in 3, third busbar 6 is set in third substation 2, and the 4th busbar 4 is set 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 closed state, and interconnection switch, which is in, cut-offs state.
In one embodiment, it is automatic that distribution is configured in 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 rapidly event
Barrier positioning, distribution line is divided into one section one section by block switch, in this way when there is node failure, can faulty section circuit every
It leaves, the continuation of other non-faulting sections can power, and block switch and interconnection switch are all transformed by power distribution automation, them is allowed to have
It standby certain control logic and realizes controllable, passes 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
It, 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 is closed, 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 the higher, distribution 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
It stands, 4 sections of busbares and 4 times distribution lines, the wiring patterns of 1 circuit group that every time distribution line is formed there are two contact point,
Every time distribution line is made of several ring-main units and part of path, and several ring-main units are connected by part of path, every time distribution
Circuit is connect 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, third returns wiring line and the 4th time distribution line 12 shares an interconnection switch, is 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 simultaneously and contact is opened
It closes, block switch be in closed state during normal operation, and interconnection switch is in cut-offfing state.Every time line power is all from power transformation
It stands, power distribution automation equipment is configured by connection in ring-main unit 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
It restores 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, draw third from third busbar 6 and return distribution line 11, 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 is 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 as 22 and the 4th interconnection switch 23 of third interconnection switch；Third returns 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 that third is returned on distribution line 11 and the 4th time distribution line 12 is respectively
An outgoing interval switch is respectively included in non-end ring-main unit 18 and non-end ring-main unit 19 to open as the 5th contact
24 and the 6th interconnection switch 25 of pass, the 5th interconnection switch 24 that the non-end ring-main unit 18 of distribution line 11 is returned through third connect
In the third 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 adapt to load more flexiblely
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, the problems such as flexibility is insufficient, 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
It applies 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, it is all considered to be the range of this specification record.
Embodiment described above only expresses the several embodiments of the utility model, and description is more specific and detailed,
But therefore it can not be interpreted as the limitation to utility model patent range.It should be pointed out that the common skill for this field
For art personnel, without departing from the concept of the premise utility, various modifications and improvements can be made, these are belonged to
The scope of protection of the utility model.Therefore, the protection domain of the utility model patent should be determined by the appended claims.
Claims (9)
1. a kind of power distribution network four returns one group of topological structure, which is characterized in that including first time distribution line, second time distribution wire
Return distribution line and the 4th time distribution line for road, third, first time distribution line, second time distribution line, described
Third returns distribution line and the 4th time distribution line and includes several ring-main units and part of path, and several 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
As the first interconnection switch, the third is returned for connection, the inlet wire interval of the first end ring-main unit or outgoing line interval switch
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 as the second interconnection switch, first time distribution line and second time distribution wire
An outgoing interval switch is respectively included in the non-end ring-main unit of road to open as third interconnection switch and the 4th contact
It closes, respectively including one in the non-end ring-main unit that the third is returned on distribution line and the 4th time distribution line feeds out
As the 5th interconnection switch and the 6th interconnection switch, the 5th interconnection switch connects the third contact and opens line interval switch
It closes, the 6th interconnection switch connection the 4th interconnection switch, remaining all switch in the ring-main unit are opened for segmentation
It closes.
2. power distribution network four according to claim 1 returns one group of topological structure, which is characterized in that further includes the first busbar,
Two busbares, third busbar and the 4th busbar, first time distribution line connect first busbar, second time distribution wire
Road connects second busbar, and the third returns distribution line and connects the third busbar, the 4th time distribution line connection
4th busbar.
3. power distribution network four according to claim 2 returns one group of topological structure, which is characterized in that further include the first substation and
Second substation, first busbar and second busbar are set in first substation, the third busbar and institute
The 4th busbar is stated to be set in second substation.
4. power distribution network four according to claim 2 returns one group of topological structure, which is characterized in that further include the first substation,
Second substation, third substation and the 4th substation, first busbar are set in first substation, and described second
Busbar is set in second substation, and the third busbar is set in the third 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, which is characterized 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, which is characterized in that first interconnection switch is extremely
Power distribution automation equipment is configured in 6th interconnection switch and the block switch.
7. power distribution network four according to claim 6 returns one group of topological structure, which is characterized 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, which is characterized 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, which is characterized in that first interconnection switch is extremely
6th 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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| CN201721722072.2U CN207588451U (en) | 2017-12-08 | 2017-12-08 | Power distribution network four returns one group of topological structure |
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| CN201721722072.2U CN207588451U (en) | 2017-12-08 | 2017-12-08 | Power distribution network four returns one group of topological structure |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107968401A (en) * | 2017-12-08 | 2018-04-27 | 广州供电局有限公司 | Power distribution network four returns one group of topological structure |
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- 2017-12-08 CN CN201721722072.2U patent/CN207588451U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107968401A (en) * | 2017-12-08 | 2018-04-27 | 广州供电局有限公司 | Power distribution network four returns one group of topological structure |
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| TR01 | Transfer of patent right |
Effective date of registration: 20200930 Address after: 510620 Tianhe District, Guangzhou, Tianhe South Road, No. two, No. 2, No. Patentee 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. Patentee before: GUANGZHOU POWER SUPPLY Co.,Ltd. |
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| TR01 | Transfer of patent right |