CN207588452U - 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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- CN207588452U CN207588452U CN201721722132.0U CN201721722132U CN207588452U CN 207588452 U CN207588452 U CN 207588452U CN 201721722132 U CN201721722132 U CN 201721722132U CN 207588452 U CN207588452 U CN 207588452U
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Abstract
The utility model is related to a kind of power distribution networks three to return one group of topological structure,Third, which is back to, including first returns distribution line,Every time distribution line includes several ring-main units and part of path,Several 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 as the first interconnection switch,First,At least one outgoing interval switch is respectively included in non-end ring-main unit on two times distribution lines as the second interconnection switch and third interconnection switch,Third returns the inlet wire of the second end ring-main unit on distribution line or outgoing line interval switch is used as the 4th interconnection switch,The non-end ring-main unit that third is returned on distribution line includes at least one outgoing interval switch as the 5th interconnection switch,4th interconnection switch connects third 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 utility model is related to power domains, and one group of topological structure is returned more particularly to a kind of power distribution network three.
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 three is provided and returns one
Group topological structure.
A kind of power distribution network three returns one group of topological structure, is returned including first time distribution line, second time distribution line and third
Distribution line, first time distribution line, second time distribution line and the third return distribution line including several
Ring-main unit and part of path, several 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
At least one outgoing interval switch is respectively included in net unit as the second interconnection switch and third interconnection switch, the third
Return the second end ring-main unit on distribution line inlet wire interval or outgoing line interval switch as the 4th interconnection switch, described the
Non-end ring-main unit on three times distribution lines includes at least one outgoing interval switch as the 5th interconnection switch, institute
It states the 4th interconnection switch and connects the third 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 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, 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 as to adapt to the development of load more flexiblely, 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 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.
Specific 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 third return distribution line 11, first time distribution line 9, second times distribution lines 10 and thirds
It returns distribution line 11 and includes several ring-main units and part of path, several 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
At least one outgoing interval switch is respectively included in end ring net unit 1 and is used as the second interconnection switch 5 and third interconnection switch 6,
Third goes back to the inlet wire interval of the second end ring-main unit on distribution line 11 or outgoing line interval switch is used as the 4th interconnection switch
7, the non-end ring-main unit 1 that third is returned on distribution line 11 includes at least one outgoing interval switch as the 5th contact
Switch 8, the 4th interconnection switch 7 connection third interconnection switch 6, the 5th interconnection switch 8 connects the second interconnection switch 5, ring-main unit
All switches of remaining interior are block switch.
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
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
It closes as the first interconnection switch 4, inlet wire interval or outgoing line interval switch the switch flowed 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 returns distribution line 11 as interconnection switch, i.e. the second interconnection switch 5 and third interconnection switch 6, third
After ring-main unit power supply, third returns the inlet wire interval of the second end ring-main unit on distribution line 11 or outgoing line interval switch
As the 4th interconnection switch 7, the non-end ring-main unit 1 on third 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
The third 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 first time distribution line, 9, second times distribution lines 10 or third return some node on distribution line 11 because of 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 third busbar 14, first time distribution line 9 connect the first busbar 12, and second time distribution line 10 connects the second busbar
13, third returns distribution line 11 and connects third busbar 14.
Specifically, 1 time medium-voltage distribution circuit is respectively 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 draw 1 time medium-voltage distribution from third busbar 14, i.e. third returns distribution
Circuit 11, per loop line, the load of road power supply is 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 set in the first substation 15, and third busbar 14 is set in the second substation 16.
Specifically, the first busbar 12, the second busbar 13,14 line power of third busbar are all from substation, ring-main unit
It is 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 closed state, and interconnection switch, which is in, cut-offs state.
In one embodiment, power distribution automation is configured in 4 to the 5th interconnection switch 8 of the first interconnection switch and block switch
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, 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
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 4 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 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 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 three returns one group of topological structure, includes 2 power transformations
It stands, 3 sections of busbares and 3 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 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 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 12, from the second busbar 13
Second time distribution line 10 is drawn, third is drawn from third busbar 14 and returns distribution line 11；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
Pass is separated 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 as the second interconnection switch 5 and third interconnection switch 6；Third is returned to the on distribution line 11
As the 4th interconnection switch 7, third is returned on distribution line 11 for the inlet wire interval of two end ring-main units or outgoing line interval switch
Non-end ring-main unit 1 includes at least one outgoing interval switch as the 5th interconnection switch 8, second end ring-main unit
In the 4th interconnection switch 7 connect second time distribution line 10 third 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 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 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 adapt to the development of load more flexiblely, i.e., when three times distribution lines wherein have one
Circuit breaks down, and the load transfer of the faulty line can not had to other twice on the circuit of failure, 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
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 (8)
1. a kind of power distribution network three returns one group of topological structure, which is characterized in that including first time distribution line, second time distribution line
Distribution line is returned with third, it is equal that first time distribution line, second time distribution line and the third return distribution line
Including several ring-main units and part of path, several 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
At least one outgoing interval switch is respectively included in non-end ring-main unit and is used as the second interconnection switch and third interconnection switch,
The inlet wire interval for the second end ring-main unit that the third is returned on distribution line or outgoing line interval switch are opened as the 4th contact
It closes, the non-end ring-main unit that the third is returned on distribution line includes at least one outgoing interval switch as 5-linked
Network switchs, and the 4th interconnection switch connects the third interconnection switch, the 5th interconnection switch connection second contact
It switchs, 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, which is characterized in that further includes the first busbar,
Two busbares and third busbar, first time distribution line connect first busbar, and second time distribution line connects institute
The second busbar is stated, the third returns distribution line and connects the third busbar.
3. power distribution network three 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 setting
In in second substation.
4. power distribution network three according to claim 1 returns one group of topological structure, which is characterized 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, which is characterized in that first interconnection switch is extremely
Power distribution automation equipment is configured in 5th interconnection switch and the block switch.
6. power distribution network three according to claim 5 returns one group of topological structure, which is characterized 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, which is characterized 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, which is characterized in that first interconnection switch is extremely
5th interconnection switch and the block switch are on-load switch.
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| CN201721722132.0U CN207588452U (en) | 2017-12-08 | 2017-12-08 | Power distribution network three returns one group of topological structure |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107979090A (en) * | 2017-12-08 | 2018-05-01 | 广州供电局有限公司 | Power distribution network three returns one group of topological structure |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107979090A (en) * | 2017-12-08 | 2018-05-01 | 广州供电局有限公司 | Power distribution network three returns one group of topological structure |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20200924 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 |