CN106410806B - Three circuit types two are segmented two pressure rack sky trunk power distribution networks and its construction method in the contact - Google Patents
Three circuit types two are segmented two pressure rack sky trunk power distribution networks and its construction method in the contact Download PDFInfo
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- 238000012546 transfer Methods 0.000 abstract description 3
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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
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Abstract
The invention discloses a kind of three circuit types two to be segmented two pressure rack sky trunk power distribution networks and its construction method in the contact, which includes: the first level-one power-feed section constructed by first end power supply, the second level-one power-feed section constructed by second end power supply and the third level-one power-feed section constructed by third end power supply；And triangle power supply structure, including connecting the first second level power-feed section triangular in shape, the second second level power-feed section and third power-feed section from beginning to end, wherein, the wiring construction being made of the block switch of normally off and the interconnection switch of a normally open is respectively equipped on the first second level power-feed section, the second second level power-feed section and third second level power-feed section.For power distribution network of the invention using two contact structure of the segmentation of double-circuit formula two, the structure is relatively independent, load transfer ability is stronger, simple and reasonable, meets the actual requirement of fortune inspection, scheduling, marketing management, especially suitable for rural area and novel downtown areas.
Description
Technical field
The present invention relates to a kind of middle pressure rack sky trunk power distribution network and its construction methods.
Background technique
According to " distribution network planning designing technique directive/guide " (Q/GDW 738-2012), " urban distribution network planning design rule
Model " (GB 50613-2010) and " rural cadastration Guidance Rule " (DL/T 5118), middle pressure rack sky trunk power distribution network allusion quotation
Type structure has: single radiation wiring, the wiring of simply connected network and more segmentation appropriateness contact wiring.
The three of the above standard mode of connection, in the construction of traditional medium voltage distribution network, because the geographical distribution of load point, road are walked
To with the factors such as rising characteristic, easily cause practical rack to deviate with grid plan modification target.Though being rolled modification year by year and being entangled
Partially, it but ultimately causes that network structure is unintelligible, the reality more than unreasonable, the invalid contact of segmentation, directly affects power distribution network and turn to supply
Mutually band inferior capabilities, customer power supply reliability are difficult to ensure.
Due to being constrained by customer charge density, planned road network and the otherness of regional development, all kinds of " regulations " can not
Timing is built to rack and rack transient mode defines.In order to reach the power supply capacity index of different zones, distribution is realized
The growth requirement of net construction appropriate advance customer charge.For many years, power supply enterprise is always close around " customer charge develops special
Property ", " grid structure how being improved, to realize reasonable transition and evolution to final rack ", " how to realize power distribution network investment with
In-depth analysis and primary study are carried out in a series of this proposition such as coordination between income ".
More especially it is located at the power supply user in rural area, novel cities and towns, due to being layouted by source substation, medium-voltage line
The constraints such as radius of electricity supply, power supply capacity, power supply quality, a large amount of trunk power distribution network performance driving economy levels are not high.Heavy duty with
Situations such as underloading, substation's interval resource is not occupied high with line load level, simultaneously deposits, and directly causes the power supply water to user
Gentle power supply capacity is low, and customer power supply reliability is difficult to ensure.
Summary of the invention
The purpose of the present invention is to provide a kind of three circuit types two segmentation, two contacts simple and reasonable, extended capability is strong
Middle pressure rack sky trunk power distribution network.
The object of the invention is also to provide a kind of construction methods of middle pressure rack sky trunk power distribution network.
For this purpose, one aspect of the present invention provides a kind of middle pressure rack sky trunk power distribution network, comprising: constructed by first end power supply
First level-one power-feed section, the second level-one power-feed section constructed by second end power supply and the constructed by third end power supply the 3rd 1
Grade power-feed section；And triangle power supply structure, it is connected to the first level-one power-feed section, the second level-one power-feed section and the power supply of third level-one
Between section, including connecting the first second level power-feed section triangular in shape, the second second level power-feed section and third power-feed section from beginning to end, wherein
It is respectively equipped on first second level power-feed section, the second second level power-feed section and third second level power-feed section and is joined by a block switch and one
The wiring construction of network switch composition a, wherein block switch keeps normally off and an interconnection switch maintains a normally open state.
Further, above-mentioned first end power supply is the first transformer, and the first level-one power-feed section includes in the first transformer
The first outlet breaker of outlet end setting；Second end power supply is the second transformer, and the second level-one power-feed section is included in the second change
The second outlet breaker of the outlet end setting of depressor；And third end power supply is third transformer, third level-one power-feed section packet
Include the third outlet breaker in the setting of the outlet end of third transformer.
Further, pressure rack sky trunk power distribution network for Rural Power Distribution Network or is used for novel town power distribution network among the above.
According to another aspect of the present invention, a kind of construction method of middle pressure rack sky trunk power distribution network is provided, including following
Step: the first line constructed by first end power supply, the second route constructed by second end power supply are constructed and by third end electricity
The step of tertiary circuit of source building one；The step of wiring construction is respectively set on first line, the second route and tertiary circuit
Rapid two, wherein wiring construction is made of a block switch and an interconnection switch, wherein a block switch keeps normally closed
A state and interconnection switch maintains a normally open state；And by the wiring construction in first line, the wiring knot on the second route
Connection structure on structure and tertiary circuit is connected with each other, to form the step of power supply structure is got in touch in the segmentation of triangle two two three.
Further, above-mentioned steps two include that the first block switch and first are sequentially connected in series on the bus of first line
Network switch is sequentially connected in series the second block switch and the second interconnection switch and in tertiary circuit on the bus of the second route
Third block switch and third interconnection switch are sequentially connected in series on bus, wherein separate first line using the first block switch
Level-one power-feed section and second level power-feed section separate, separated using the second block switch by the level-one power-feed section and second level of the second route
Power-feed section separates, and is separated the level-one power-feed section of tertiary circuit and second level power-feed section using third block switch, step 3 includes
The second level power-feed section of first line is connected to the level-one power-feed section of the second route, is connected to the second level power-feed section of the second route
The level-one power-feed section of tertiary circuit and the level-one power-feed section that the second level power-feed section of tertiary circuit is connected to first line.
Further, above-mentioned steps two include: in the end of the level-one power-feed section of first line the first block switch in parallel
With the first interconnection switch；The second block switch in parallel and the second interconnection switch in the end of the level-one power-feed section of the second route；With
And the end parallel connection third block switch and third interconnection switch of the level-one power-feed section in tertiary circuit, step 3 include: by
First block switch of one route is connect with the second interconnection switch of the second route by the first second level power-feed section；By the second route
The third interconnection switch of second block switch and tertiary circuit is connected by the second second level power-feed section；And by the third of tertiary circuit
Block switch and the first interconnection switch of first line connect.
Middle pressure rack sky trunk power distribution network of the invention, using three circuit types two segmentation, two contact structure, the structure is relatively only
It is vertical, load transfer ability is stronger, simple and reasonable, meet the actual requirement of fortune inspection, scheduling, marketing management.Especially suitable for
Rural area and novel downtown areas.
Compared with the prior art, middle pressure rack sky trunk power distribution network of the invention has the following characteristics that
1), power distribution network of the invention includes 3 two segmentations, two contact wiring construction.The structure is relatively independent, supply load
It is relatively stable.When the customer charge demand that the structure is accessed increases or reduces, changed by flexibly cutting, it can be to other types mesh
Mark structure, which is cut, to be changed, to guarantee the control of route performance driving economy in zone of reasonableness.
2), power distribution network of the invention, the three-line for participating in contact are connected to the bus of different substation to join between building station
The contact point of network, three-line shares at 3.In addition to providing power supply by source substation bus, power-feed sections at different levels can also be passed through
The route that two interconnection switches of upper setting and another two buses provide power supply, which is formed, to be got in touch with.Guarantee line failure or electricity
When source access bus breaks down, the power supply capacity to non-faulting section is remained to.
3), the factors such as the geographical distribution and rising characteristic of traditional medium voltage distribution network because of load point, easily cause practical rack with
Grid plan modification target deviates.Though through rolling modification and correction year by year, ultimately cause network structure it is unintelligible, segmentation do not conform to
Reason, the in vain more reality of contact directly affect turning for mutual band inferior capabilities for power distribution network, and customer power supply reliability is difficult to ensure.
Power distribution network of the invention provides 1 two contact whole group power supply unit of route building standard two segmentation by 3 substations respectively, has
Structure is simple, turns strong for ability, and rack, which is cut, changes the features such as flexible, is preferably used as in Urban New District, center small towns, development park etc. and presses
Make somebody a mere figurehead public trunk power distribution network final period target net application.
4), power distribution network of the invention, based on modular design specification, structure is simple, convenient to construct.The structure is compared with standard network
Frame structure specifically and quantization.Distribution and highway and the route of power supply area power supply point and load point can effectively be combined
Application is carried out in gallery arrangement.The orderly construction of middle pressure mains network, reasonable evolution have not only been guided, while greatly having improved power transformation
Stand, in switchyard extrusion line interval resource distribution, and have to the inspection of power distribution network fortune, scheduling and the access-in management of newly-increased load
Directive significance.
Other than objects, features and advantages described above, there are also other objects, features and advantages by the present invention.
Below with reference to figure, the present invention is described in further detail.
Detailed description of the invention
The accompanying drawings constituting a part of this application is used to provide further understanding of the present invention, and of the invention shows
Examples and descriptions thereof are used to explain the present invention for meaning property, does not constitute improper limitations of the present invention.In the accompanying drawings:
Fig. 1 is the framework that three circuit type two according to an embodiment of the invention is segmented two pressure rack sky trunk power distribution networks in the contact
Schematic diagram；
Fig. 2 is that double-circuit formula two according to the present invention is segmented the first of two pressure rack sky trunk power distribution network construction methods in the contact
The schematic diagram of embodiment；And
Fig. 3 is that double-circuit formula two according to the present invention is segmented the second of two pressure rack sky trunk power distribution network construction methods in the contact
The schematic diagram of embodiment.
Specific embodiment
It should be noted that in the absence of conflict, the features in the embodiments and the embodiments of the present application can phase
Mutually combination.The present invention will be described in detail below with reference to the accompanying drawings and embodiments.
Fig. 1 to Fig. 3 shows some embodiments of middle pressure rack sky trunk power distribution network.
In an embodiment of the present invention, as shown in Figure 1, middle pressure rack sky trunk power distribution network includes being constructed by first end power supply
First level-one power-feed section A-1, the second level-one power-feed section B-1 constructed by second end power supply and by the building of third end power supply
Third level-one power-feed section C-1；And triangle power supply structure, it is connected to the first level-one power-feed section A-1, the second level-one power-feed section B-
Between 1 and third level-one power-feed section C-1, including connecting the first second level power-feed section A-2 triangular in shape, the power supply of the second second level from beginning to end
Section B-2 and third second level power-feed section C-2, wherein the first second level power-feed section A-2 is equipped with to be got in touch with by a block switch 11 and one
The wiring construction that switch 12 forms, the second second level power-feed section B-2 are equipped with by a block switch 21 and one 22 groups of interconnection switch
At wiring construction, third second level power-feed section C-2 be equipped with connect by what a block switch 31 and an interconnection switch 32 formed
Cable architecture, wherein block switch 11,21,31 keeps normally off and interconnection switch 12,22,32 maintains a normally open state.
In the present embodiment, the first second level power-feed section A-2, the second second level power-feed section B-2 and third second level power-feed section C-2 shape
At the power supply structure of triangle, have the advantage that
1), power distribution network of the invention includes 3 two segmentations, two contact wiring construction.The structure is relatively independent, supply load
It is relatively stable.When the customer charge demand that the structure is accessed increases or reduces, changed by flexibly cutting, it can be to other types mesh
Mark structure, which is cut, to be changed, to guarantee the control of route performance driving economy in zone of reasonableness.
2), power distribution network of the invention, the three-line for participating in contact are connected to the bus of different substation to join between building station
The contact point of network, three-line shares at 3.In addition to providing power supply by source substation bus, power-feed sections at different levels can also be passed through
The route that two interconnection switches of upper setting and another two buses provide power supply, which is formed, to be got in touch with.Guarantee line failure or electricity
When source access bus breaks down, the power supply capacity to non-faulting section is remained to.
3), the factors such as the geographical distribution and rising characteristic of traditional medium voltage distribution network because of load point, easily cause practical rack with
Grid plan modification target deviates.Though through rolling modification and correction year by year, ultimately cause network structure it is unintelligible, segmentation do not conform to
Reason, the in vain more reality of contact directly affect turning for mutual band inferior capabilities for power distribution network, and customer power supply reliability is difficult to ensure.
Power distribution network of the invention provides 1 two contact whole group power supply unit of route building standard two segmentation by 3 substations respectively, has
Structure is simple, turns strong for ability, and rack, which is cut, changes the features such as flexible, is preferably used as in Urban New District, center small towns, development park etc. and presses
Make somebody a mere figurehead public trunk power distribution network final period target net application.
4), power distribution network of the invention, based on modular design specification, structure is simple, convenient to construct.The structure is compared with standard network
Frame structure specifically and quantization.Distribution and highway and the route of power supply area power supply point and load point can effectively be combined
Application is carried out in gallery arrangement.The orderly construction of middle pressure mains network, reasonable evolution have not only been guided, while greatly having improved power transformation
Stand, in switchyard extrusion line interval resource distribution, and have to the inspection of power distribution network fortune, scheduling and the access-in management of newly-increased load
Directive significance.
In an embodiment of the present invention, as shown in Figure 1, by pressure rack sky trunk distribution in three circuit types of three end power supplys building
Net includes 3 source substations.The outlet of first source substation passes through bus A series connection first outlet breaker 13, the second electricity
By bus B series connection second outlet breaker 23, the outlet of third source substation is connected by bus C for the outlet of source substation
Third outlet breaker 33.The first second level power-feed section is equipped between first outlet breaker 13 and the third outlet breaker 33；
The second second level power-feed section is equipped between the second outlet breaker and the first outlet breaker；The third breaker and institute
It states and is equipped with third second level power-feed section between the second breaker.A triangle second level power supply segment structure is collectively formed in the above structure.
One end of each second level power-feed section is equipped with a block switch, and the other end is equipped with an interconnection switch, wherein segmentation is opened
It closes and keeps normally off, interconnection switch maintains a normally open state, and each outlet breaker keeps normally off.First outlet breaker
Leading-out terminal is connected with the first second level power-feed section and the second second level power-feed section respectively by level-one power-feed section A-1；Second outlet open circuit
The leading-out terminal of device is connected with the second second level power-feed section and third second level power-feed section respectively by level-one power-feed section B-1；Third outlet
The leading-out terminal of breaker is connected with third second level power-feed section and the first second level power-feed section respectively by level-one power-feed section C-1.
When the customer charge demand that the structure is accessed increases or reduces, changed by flexibly cutting, it can be to other types mesh
Mark structure, which is cut, to be changed, to guarantee the control of route performance driving economy in zone of reasonableness.
Boundary condition: often allow long-term work load condition table with cable referring to middle pressure trunk power distribution network:
Single power supply segment fault: when normal operating mode, the operation load level of single line is usually no more than maximum negative
Carry 70% horizontal (substantially close to 2/3).Single power-feed section load level carries out about according to the 1/3 of corresponding cable load level
Beam, that is, when can guarantee single power supply segment fault, non-faulting power-feed section still safe power supply.
The system failure: when generating system failure, source substation single transformer power loss or source substation single bus
Power loss, when being related to load transfer, single power-feed section load level is constrained according to the 1/3 of corresponding cable load level.
In one embodiment of this invention, as shown in Figure 2 or Figure 3, middle pressure rack sky trunk power distribution network construction method, including with
Lower step:
Construct the first line constructed by first end power supply, the second route constructed by second end power supply and by third
The step of holding the tertiary circuit of power supply building one；
In the step of wiring construction is respectively set on first line, the second route and tertiary circuit two, wherein wiring construction
It is made of a block switch and an interconnection switch, wherein a block switch keeps normally off and an interconnection switch
Maintain a normally open state；And
Wiring construction in first line, the wiring construction on the wiring construction and tertiary circuit on the second route are connected
It connects, to form the step of power supply structure is got in touch in the segmentation of triangle two two three.
Power distribution network construction method according to the present invention, every route is by a level-one power-feed section and two second level power-feed section groups
At power supply structure is clear, especially suitable for rural area and novel downtown areas.
In an embodiment of the present invention, as shown in Fig. 2, on the level-one power-feed section A-1 of first line an in parallel segmentation open
11 and an interconnection switch 12 are closed, a block switch 21 in parallel and a contact are opened on the level-one power-feed section B-1 of the second route
22 are closed, a block switch 31 in parallel and an interconnection switch 32 on the level-one power-feed section C-1 of tertiary circuit, wherein First Line
It is connected between the interconnection switch 12 on road and the block switch 21 of the second route by a second level power-feed section B-2, the second route
Interconnection switch 22 is connected with the block switch 31 of tertiary circuit by a second level power-feed section C-2, thus three second level power-feed sections
A-2, B-2, C-2 join end to end to form the segmentation contact power supply structure of triangle two.
In the present embodiment, the type of the wiring construction of three-line is identical, is a block switch and a contact
Switch in parallel.
In an embodiment of the present invention, as shown in figure 3, three circuit type two segmentation, two contact power supply structure is by two circuit types
The wiring construction of two segmentations, two contact power supply structure and tertiary circuit is built-up.Specifically, two circuit types two segmentation, two contact
Power supply structure includes the level-one power-feed section and second level power-feed section of first line, level-one power-feed section and the second level power supply of the second route
Section, wherein the second level power-feed section parallel connection of the second level power-feed section and the second route of first line forms mutual two contact of the segmentation of font two
Power supply structure, the wiring construction on the level-one power-feed section of tertiary circuit are an interconnection switch and a block switch parallel connection.It will
The second level power-feed section A-2 of first line and the interconnection switch of tertiary circuit connect, and the interconnection switch of the second route passes through one two
Grade power-feed section C-2 is connected with the block switch of tertiary circuit, to form two segmentations, the two contact power supply structure of triangle.
In the present invention, the use normality of block switch and interconnection switch is as follows: block switch keeps normally off and connection
Network switch maintains a normally open state.
The foregoing is only a preferred embodiment of the present invention, is not intended to restrict the invention, for the skill of this field
For art personnel, the invention may be variously modified and varied.All within the spirits and principles of the present invention, made any to repair
Change, equivalent replacement, improvement etc., should all be included in the protection scope of the present invention.
Claims (5)
1. a kind of middle pressure rack sky trunk power distribution network characterized by comprising
The the first level-one power-feed section constructed by first end power supply, the second level-one power-feed section, the Yi Jiyou that are constructed by second end power supply
The third level-one power-feed section of third end power supply building；And
Triangle power supply structure, be connected to the first level-one power-feed section, the second level-one power-feed section and third level-one power-feed section it
Between, including connecting the first second level power-feed section triangular in shape, the second second level power-feed section and third second level power-feed section from beginning to end,
Wherein, it is respectively equipped on the first second level power-feed section, the second second level power-feed section and third second level power-feed section by one point
The wiring construction of Duan Kaiguan and interconnection switch composition, wherein one block switch keeps normally off and described one
A interconnection switch maintains a normally open state,
It includes 3 two segmentations, two contact wiring construction that medium pressure, which makes somebody a mere figurehead trunk power distribution network,
Medium pressure makes somebody a mere figurehead trunk power distribution network for Rural Power Distribution Network or is used for novel town power distribution network.
2. middle pressure rack sky trunk power distribution network according to claim 1, which is characterized in that
The first end power supply is the first transformer, and the first level-one power-feed section includes in the outlet end of first transformer
The first outlet breaker of setting；
The second end power supply is the second transformer, and the second level-one power-feed section includes in the outlet end of second transformer
The second outlet breaker of setting；And
Third end power supply is third transformer, and the third level-one power-feed section includes in the outlet end of the third transformer
The third outlet breaker of setting.
3. a kind of construction method of middle pressure rack sky trunk power distribution network, which comprises the following steps:
Construct the first line constructed by first end power supply, the second route constructed by second end power supply and by third end electricity
The step of tertiary circuit of source building one；
In the step of wiring construction is respectively set on the first line, second route and the tertiary circuit two, wherein
The wiring construction is made of a block switch and an interconnection switch, wherein one block switch keeps normally closed shape
State and one interconnection switch maintains a normally open state；And
By the wiring construction in the first line, the connection knot on the wiring construction and tertiary circuit on second route
Structure is connected with each other, to form the step of power supply structure is got in touch in the segmentation of triangle two two three,
Wherein, it includes 3 two segmentations, two contact wiring construction that medium pressure, which makes somebody a mere figurehead trunk power distribution network,.
4. the construction method of middle pressure rack sky trunk power distribution network according to claim 3, which is characterized in that
The step 2 include be sequentially connected in series on the bus of the first line the first block switch and the first interconnection switch,
The second block switch and the second interconnection switch and the mother in the tertiary circuit are sequentially connected in series on the bus of second route
Third block switch and third interconnection switch are sequentially connected in series on line, wherein separate described using first block switch
The level-one power-feed section and second level power-feed section of one route separate, and are separated using second block switch by the one of second route
Grade power-feed section and second level power-feed section separate, using the third block switch by the level-one power-feed section and second level of the tertiary circuit
Power-feed section separates,
The step 3 includes the level-one power-feed section that the second level power-feed section of the first line is connected to second route, incites somebody to action
The second level power-feed section of second route is connected to the level-one power-feed section of the tertiary circuit and supplies the second level of tertiary circuit
Electric section is connected to the level-one power-feed section of the first line.
5. the construction method of middle pressure rack sky trunk power distribution network according to claim 3, which is characterized in that
The step 2 includes: in the end of the level-one power-feed section of the first line the first block switch in parallel and the first contact
Switch；The second block switch in parallel and the second interconnection switch in the end of the level-one power-feed section of second route；And institute
The end parallel connection third block switch and third interconnection switch of the level-one power-feed section of tertiary circuit are stated,
The step 3 include: by the second interconnection switch of the first block switch of the first line and second route by
The connection of first second level power-feed section；By the third interconnection switch of the second block switch of second route and the tertiary circuit by
The connection of second second level power-feed section；And the third block switch of the tertiary circuit and the first contact of the first line are opened
Connection connects.
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