CN103904564B - High-voltage distribution device with double breakers used for single bus segmentation and application thereof - Google Patents
High-voltage distribution device with double breakers used for single bus segmentation and application thereof Download PDFInfo
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- CN103904564B CN103904564B CN201410158161.3A CN201410158161A CN103904564B CN 103904564 B CN103904564 B CN 103904564B CN 201410158161 A CN201410158161 A CN 201410158161A CN 103904564 B CN103904564 B CN 103904564B
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Abstract
The invention relates to a high-voltage distribution device, in particular to a high-voltage distribution device with double breakers used for single bus segmentation and the application of the high-voltage distribution device. According to the high-voltage distribution device with the double breakers used for single bus segmentation, a segmented circuit with main transformers and power source incoming lines is provided creatively. The high-voltage distribution device comprises the first breaker 1CBF, the second breaker 2CBF and an intermediate node. The two breakers are connected to two sectioned buses. The intermediate node is connected to the second main transformer through a disconnecting switch 2GB. The high-voltage distribution device can be applied to a newly constructed project and an old project which is put into operation through transformation. The high-voltage distribution device with the double breakers used for single bus segmentation has the advantages that the structural form that loops are symmetrically distributed is adopted, and therefore power supply of a power source and the number of the loops can be effectively matched with each other; it can be guaranteed that under the condition of various possible accidents and the overhauling state, the two loops of power source (main transformers) incoming lines effectively supply power to the load of a power substation, and the reliability and the stability of power supply of a power distribution device are definitely and effectively guaranteed.
Description
Technical field
The present invention relates to a kind of high voltage distribution installation, particularly a kind of dual-breaker makees the high voltage power distribution dress of sectionalized single busbar connection
Put and its apply.It is applied to outlet be 4～5 times, main transformer be Substation Design when 3.
Background technology
In the Substation Design of 35kV-110kV, according to GB50059-2011《35kV-110kV Substation Design is advised
Model》, the 3.2.3 article " 35kV-110kV electrical wiring is preferably connect using bridge shape, expansion bridge shape, line transformer group or lines branch
The wiring of line, single busbar or sectionalized single busbar connection.", the 3.2.4 article " 35kV-66kV circuit be 8 times and above when, preferably adopt double female
Line wiring.110kV circuit be 6 times and above when, preferably adopt double bus scheme ".According to DL/T5218-2005《220kV-500kV
Substations ' design technical regulation》, the 7.1.4 article the 3rd section, " 110kV, 66kV power distribution equipment in 220kV electric substation（Or 35kV
Power distribution equipment）, when transmission line circuit number is below 6 times（Or when returning for 4-7）, preferably connect using single busbar or sectionalized single busbar connection
Line, 6 times and above when（Or 8 times and above when）, preferably adopt double bus scheme.”
Described sectionalized single busbar connection refers to：Bus is divided into two segmentations, and this two segmentations are carried out by a section switch
Connect, return for 4-5 when the 110kV outlet in electric substation, when main transformer is 3, using single-trunk segmental wiring, as Figure 10,
Shown in Figure 11, will exist and be divided into two sections of one of segmentation and be connected to 2 main transformers or 2 times electric power incoming lines, if this point
When section runs into bus-bar fault or maintenance, arise that its 2 main transformer being located or 2 times electric power incoming lines are out of service, now
More than 50% will be fallen sharply for its power supply capacity of 110kV electric substation, thus the unnecessary loss of cause the user.This is according to existing
Row Regulations are designed problem to be solved, on the other hand, in the existing electric substation putting into operation that built up because of floor space
It is all fixing it is impossible to random change with equipment, so that Substation Optimization is designed and be restricted.Therefore existing design has confession
Electric reliability is not strong, very flexible, and can lose load and cause damage etc. weak point.
Content of the invention
It is an object of the invention to according to providing in place of the deficiencies in the prior art, a kind of power supply reliability is good, stability is high
Dual-breaker make high voltage distribution installation and its application of sectionalized single busbar connection.
The high voltage distribution installation that dual-breaker of the present invention makees sectionalized single busbar connection is realized by following approach：
The high voltage distribution installation that dual-breaker makees sectionalized single busbar connection comprises：First sectionalized busbar IM and the second sectionalized busbar
IIM, every sectionalized busbar is connected to 2 loop lines and 1 main transformer, is connected to the first sectionalized busbar IM and the second sectionalized busbar
The main transformer of IIM is respectively at least 1 time power line on #1 main transformer and #3 main transformer, and each sectionalized busbar；Its
Structural feature is：Also include segmentation loop, it includes the first chopper 1CBF, the second chopper 2CBF and middle node
Point；One end of first chopper 1CBF is connected with the first sectionalized busbar IM by the first disconnecting switch 1GF, and the other end then passes through the
One current transformer 1CTF and the 3rd disconnecting switch 3GF are connected with intermediate node；Likewise, one end of the second chopper 2CBF leads to
Cross the second disconnecting switch 2GF to be connected with the second sectionalized busbar IIM, the other end then pass through the second current transformer 2CTF and the 4th every
Leave pass 4GF to be connected with intermediate node；And intermediate node is then connected to #2 main transformer by disconnecting switch 2GB.
So, the present invention breaches existing design discipline, creatively proposes a kind of band main transformer and electric power incoming line
Segmentation loop, when the 110kV outlet in electric substation be 4 times, main transformer be 3, connect using single busbar dual-breaker segmentation
During line design, #1 and #3 main transformer is connected respectively on the first sectionalized busbar IM and the second sectionalized busbar IIM, by first
Electric power incoming line on sectionalized busbar IM and the second sectionalized busbar IIM is powered to it.In normal operation, on segmentation loop
Chopper 1CBF, 2CBF and disconnecting switch 1GF, 2GF, 3GF, 4GF are closure state, because #2 main transformer passes through to lead to respectively
Cross the first chopper 1CBF and the second chopper 2CBF correspondence to be connected on the first sectionalized busbar IM and the second sectionalized busbar IIM,
The segmented loop of power supply on therefore IM and IIM can power to #2 main transformer simultaneously；When event in wherein one sectionalized busbar
When barrier or maintenance, only need to disconnect the section switch that this sectionalized busbar is connected, now, the power supply of another sectionalized busbar
Through another section switch, power supply is continued to #2 main transformer.
Technique scheme is the high voltage distribution installation when the outlet in transformer station is 4 times, may be equally applicable for out
Line is the Substation Design of 5 times；When the 110kV outlet in transformer station be 5 times, wherein 3 times be power line when, its dual-breaker make
The high voltage distribution installation of sectionalized single busbar connection is specially：
First sectionalized busbar IM and the second sectionalized busbar IIM, every sectionalized busbar is connected to 2 loop line roads and 1 main transformer pressure
Device, the main transformer being connected to the first sectionalized busbar IM and the second sectionalized busbar IIM is respectively #1 main transformer and #3 main transformer pressure
At least 1 time power line on device, and each sectionalized busbar；Its structural feature is：Also include segmentation loop, this segmentation loop
Including the first chopper 1CBF, the second chopper 2CBF and intermediate node, one end of the first chopper 1CBF pass through first every
Leave pass 1GF to be connected with the first sectionalized busbar IM, the other end then passes through the first current transformer 1CTF and the 3rd disconnecting switch 3GF
It is connected with intermediate node；Likewise, the second disconnecting switch 2GF and the second sectionalized busbar are passed through in one end of the second chopper 2CBF
IIM connects, and the other end then passes through the second current transformer 2CTF and the 4th disconnecting switch 4GF is connected with intermediate node；And it is middle
Node is divided into intermediate node 1 and intermediate node 2, and intermediate node 1 is connected to #2 main transformer by disconnecting switch 2GB；Middle node
Point 2 then connects a power line, via the 5th disconnecting switch 5G, the 3rd chopper 3CB, the 3rd current transformer 3CT and the
Seven disconnecting switch 7G are drawn.
So, when 110kV has 5 loop line roads, when being power circuit, wherein 1 time power line can be also coupled to centre wherein 3 times
Node, draws through chopper and disconnecting switch.In this scheme, it is odd number that circuit returns number, in the first sectionalized busbar IM and second point
On the basis of section bus IIM is respectively connected to two loop line roads and balances, 1 loop line road having more is connected in segmentation loop.
The method have technical effect that：First, when arbitrary sectionalized busbar breaks down or overhauls, this sectionalized busbar
Will be disconnected, and the electric power incoming line by another sectionalized busbar and be connected to the 3rd power circuit of intermediate node to this sectionalized busbar
And the main transformer on segmentation loop is powered, it is to avoid separate unit main transformer power the overload leading to it is ensured that power supply can
By property and stability.Secondly, dual-breaker of the present invention make sectionalized single busbar connection high voltage distribution installation inspired following
Electric Design：High voltage distribution installation for sectionalized single busbar connection can adopt the symmetrical version in loop, so that
The power supply of power supply can effectively be coordinated with feeder number.And in prior art, when configuration 4 returns back out line or 5 and returns back out line, generally only
Segmentation can be carried out in the way of average as best one can, that is, every section is distributed 2 times or 3 times, 3 main transformers can only be according to 1
Or the mode of 2 is accordingly assigned in two segmentations, same transmission line circuit is led to be configured with unbalanced power supply（Main transformer）Power supply.
And realized to above-mentioned loop as the segmentation loop of sectionalized single busbar connection by the dual-breaker with main transformer for the present invention
Configuration, then can be using the main transformer in segmentation loop and the 3rd power circuit as middle adjustable electric power loop, a certain
After power failure on sectionalized line, ensure that two telegram in reply sources（Main transformer）Inlet wire is effectively powered to electric substation's load, makes
Power supply can be adapted to completely with transmission line circuit, be really effectively guaranteed the reliability that high voltage distribution installation powers and stably
Property.
When dual-breaker of the present invention is made the high voltage distribution installation of sectionalized single busbar connection and is applied to newly-built engineering, specifically
Step is as follows：
A kind of 4 110kV returning back out line are provided to adopt the technical scheme of chopper dually arrayed air insulation power distribution equipment,
With the first disconnecting switch 1GF, the first chopper 1CBF, the first current transformer 1CTF and the 3rd disconnecting switch
3GF sequentially longitudinal arrangement, composition first interval, and the second disconnecting switch 2GF, the second chopper 2CBF, the second current transformer
2CTF, the 4th disconnecting switch 4GF sequentially longitudinal arrangement, composition second interval, the first interval is spaced and parallel with second side by side, and position
In transformer station between the first sectionalized busbar IM and the second sectionalized busbar IIM；Disconnecting switch 2GB occupies the 3rd interval, and this
Three intervals are on same longitudinal axis with the second interval；
Above-mentioned dual-breaker segmentation and three intervals of disconnecting switch 2GB occupancy connecting #2 main transformer, the 3rd keeps apart
Close 3GF and the 4th disconnecting switch 4GF overhead to be connected with 3GF, 4GF by framework one article of cross span of erection,
Set up a vertical cross-line I crossing over this cross span and the second sectionalized busbar IIM from top through framework again, this vertical across
Line I is connected with cross span above cross span, then longitudinal crossing second interval and the 3rd interval, after through disconnecting switch
2GB is followed by #2 main transformer.
When 110kV has 5 loop line roads, wherein 3 times is power line, when new construction is applied, except the step side of above-mentioned 4 loop lines
Outside method, also include having the following steps：
The power line in segmentation loop will be accessed, by the 5th disconnecting switch 5G, the 3rd chopper 3CB, the 3rd current transformer
3CT, the 7th disconnecting switch 7G sequentially longitudinal arrangement, composition the 4th interval, the 4th interval is in same longitudinal direction with the first interval
On axis；
The double-deck vertical cross-line II of setting above the first interval with the 4th interval, vertical cross-line II is parallel with vertical cross-line I for this bilayer,
By the upper layer line of double-deck vertical cross-line II be sequentially ingressed into the outlet spark gap MOA of this supply cell, the 7th disconnecting switch 7G, the 3rd
After current transformer 3CT, the 3rd chopper 3CB, the 5th disconnecting switch 5G, then it is connected to the double-deck lower layer line indulging cross-line II, lower floor
Line is connected with lower section cross span.The wiring of such arrangement can guarantee that and all will not lose under various possible accidents and inspecting state
2 main transformers and 2 power supplys.
When dual-breaker of the present invention is made the high voltage distribution installation of sectionalized single busbar connection and is applied to transform old engineering, its step
Suddenly specific as follows：
Old engineering is line 4～5 times, main transformer is 3, is thrown using air-insulated by single-trunk segmental wiring
The power distribution equipment of fortune, when being transformed into the high voltage distribution installation that dual-breaker makees sectionalized single busbar connection；
The original single breaker section gap position being located between the first sectionalized busbar IM and the second sectionalized busbar IIM is changed
Segmentation loop described in the technical scheme of the high voltage distribution installation making sectionalized single busbar connection for arrangement dual-breaker；It is specially：Will
First disconnecting switch 1GF, the first chopper 1CBF, the first current transformer 1CTF and the 3rd disconnecting switch 3GF, and middle node
Disconnecting switch 2GB of point, the second disconnecting switch 2GF, the second chopper 2CBF, the second current transformer 2CTF, the 4th keep apart
Close 4GF and its between connection all transform monoblock type SF6 gas-insulated unit equipment as；
The above-mentioned monoblock type SF6 gas-insulated unit equipment as segmentation loop is located at the first sectionalized busbar IM and second point
Between section bus IIM.
So, it is transformed in the middle of dual-breaker segmentation using the air-insulated power distribution equipment having put into operation and draw through disconnecting switch
Go out to connect the scheme of main transformer, no matter the chopper of first wife's electric installation is dually arrayed or single-row arrangement, as long as original is divided
Intersegmental every equipment use SF6 gas-insulated unit equipment instead, and the civil engineering framework of one-stage completion need not be changed, engineering construction side
Just, cost is relatively low, really can be effectively guaranteed the reliability and stability that power distribution equipment is powered.
In sum, present invention firstly provides a kind of dual-breaker makees the high voltage distribution installation of sectionalized single busbar connection, break through
Existing design discipline, creatively proposes a kind of segmentation loop with main transformer and electric power incoming line, symmetrical using loop
The version of distribution, so that the power supply of power supply can effectively be coordinated with feeder number；Segmentation loop is as middle adjustable
Electric power loop, can guarantee that under various possible accidents and inspecting state there is two telegram in reply sources（Main transformer）Inlet wire is born to electric substation
Lotus is effectively powered, and is really effectively guaranteed the reliability and stability that power distribution equipment is powered.
Brief description
Fig. 1 show dual-breaker of the present invention and makees 110kV dual-breaker in the high voltage distribution installation of sectionalized single busbar connection
Segmentation and main transformer inlet wire electric hookup.
Fig. 2 show the 110kV power distribution equipment site plan corresponding to electric hookup in Fig. 1；I.e. of the present invention
High voltage distribution installation is applied to site plan during new construction.
Fig. 3 show the I-I sectional drawing in Fig. 2.
Fig. 4 show has 110kV dual-breaker segmentation during 3 times power lines and main transformer and electric power incoming line to connect in 5 loop line roads
Line chart；
Fig. 5 show the 110kV power distribution equipment site plan corresponding to electric hookup in Fig. 4；
Fig. 6 show the II-II sectional drawing in Fig. 5.
When Fig. 7 show application high voltage distribution installation of the present invention transformation 110kV dually arrayed power distribution equipment old engineering
110kV power distribution equipment site plan；
When Fig. 8 show application high voltage distribution installation of the present invention transformation 110kV single-row arrangement power distribution equipment old engineering
110kV power distribution equipment site plan；
Fig. 9 show between segmentation and main transformer inlet wire during application high voltage distribution installation of the present invention old engineering of transformation and separates
Face figure.
Figure 10 show described in background technology, the 110kV power distribution equipment electricity that 4 loop lines are designed by existing code
Gas wiring diagram；
Figure 11 show described in background technology, the 110kV power distribution equipment electricity that 5 loop lines are designed by existing code
Gas wiring diagram.
Specific embodiment
Embodiment 1：
Referring to the drawings 1, provide the technical scheme of the high voltage distribution installation of 43 transformators in loop line road first：Dual-breaker is made
The high voltage distribution installation of sectionalized single busbar connection comprises：First sectionalized busbar IM, the second sectionalized busbar IIM and segmentation loop.Wherein
2 loop lines are connected on every sectionalized busbar（Inlet wire and outlet）With 1 main transformer, it is connected to the first sectionalized busbar IM and second point
The main transformer of section bus IIM is respectively in 2 loop lines on #1 main transformer and #3 main transformer, and each sectionalized busbar at least
Have 1 time is power line.
Segmentation loop includes the first chopper 1CBF, the second chopper 2CBF and intermediate node；First chopper 1CBF
One end be connected with the first sectionalized busbar IM by the first disconnecting switch 1GF, the other end then pass through the first current transformer 1CTF
It is connected with intermediate node with the 3rd disconnecting switch 3GF；Likewise, the second disconnecting switch is passed through in one end of the second chopper 2CBF
2GF is connected with the second sectionalized busbar IIM, the other end then pass through the second current transformer 2CTF and the 4th disconnecting switch 4GF with
Intermediate node connects；And intermediate node is then connected to #2 main transformer by disconnecting switch 2GB.
When the high voltage distribution installation of 4 above-mentioned 3 transformators in loop line road is applied to new construction, referring to the drawings 2 and accompanying drawing
3.In accompanying drawing 2, left side is the device name sequence of power distribution equipment genesis analysis.Applying step is specially：
In bus sectional lized file, with the first disconnecting switch 1GF, the first chopper 1CBF, the first current transformer
, sequentially from south toward north longitudinal arrangement, composition first is spaced for 1CTF and the 3rd disconnecting switch 3GF, and the second disconnecting switch 2GF, the
Two chopper 2CBF, the second current transformer 2CTF, the 4th disconnecting switch 4GF sequentially from south toward northern longitudinal arrangement, form second
Interval, the first interval and second spaced and parallel, and be located in transformer station the first sectionalized busbar IM and the second sectionalized busbar IIM it
Between；Disconnecting switch 2GB of intermediate node occupies the 3rd interval, and the 3rd interval is in same longitudinal axis with the second interval
On, in the south orientation at the second interval；
In this programme, the segmentation loop that dual-breaker segmentation and main transformer feed isolating switch 2GB are formed takies
The first interval that three intervals, wherein 1GF, 1CBF, 1CTF and 3GF take, and the second of 2GF, 2CBF, 2CTF and 4GF occupancy
Interval, parallel side-by-side is distributed, positioned at the north orientation of power distribution equipment；
Based on accompanying drawing 2, and refer to the attached drawing 3, in the 3rd disconnecting switch 3GF and the 4th disconnecting switch at north orientation two interval
The overhead of 4GF by framework set up cross span K is connected with 3GF, 4GF that is to say, that this cross span K be spaced positioned at first and
Above second interval, and it is spaced across two, positioned at the north orientation position at two intervals；
Set up a vertical cross-line I crossing over this cross span K and sectionalized busbar IIM from top, this vertical cross-line I through framework again
Be connected with cross span K above cross span K, then longitudinal crossing second interval and the 3rd interval, after through disconnecting switch 2GB
It is connected to #2 main transformer.
The present invention is not described partly same as the prior art.
Embodiment 2：
Referring to the drawings 4, when the 110kV circuit in transformer station is 5 times, wherein 3 times when being power line, its configuration mode and reality
Apply example 1 roughly the same, at intermediate node, simply draw a power line again.It is specially：Intermediate node is divided into intermediate node 1 He
Intermediate node 2, intermediate node 1 is connected to #2 main transformer by disconnecting switch 2GB；Intermediate node 2 then connects a power line,
Via the 5th disconnecting switch 5G（Feed isolating switch）, the 3rd chopper 3CB, the 3rd current transformer 3CT and the 7th isolation
Switch 7G（Outlet disconnecting switch）Draw, form #5 line.Thus, when IM or IIM breaks down or overhaul be disconnected when, segmentation
The 3rd time power circuit in loop（I.e. #5 line）Main transformer on the sectionalized busbar of non-fault and segmentation loop can be supplied
Electricity, improves stability and the reliability of power supply.
Referring to the drawings 5 and accompanying drawing 6, shown 110kV circuit is 5 times, is for wherein 3 times that high voltage distribution installation during power line should
When using new construction, the part of different embodiments 1, on the basis of being application described in embodiment 1, same with the first interval
The south orientation of longitudinal axis, arranged side by side place spaced and parallel with the 3rd is provided with the 4th interval, in the 4th interval, is sequentially southward divided by north
It is furnished with the 5th disconnecting switch 5G, the 3rd chopper 3CB, the 3rd current transformer 3CT and the 7th disconnecting switch 7G.
As shown in fig. 6, the arrangement of technical scheme described in the present embodiment is on the basis of embodiment 1, first interval and
The top at the 4th interval arranges pair of lamina and indulges cross-line II, and this bilayer is indulged cross-line II and is spaced top with positioned at the second interval and the 3rd
Vertical cross-line I is parallel, therefore can by wherein 1 time power line by the upper layer line of the vertical cross-line II of the bilayer parallel with vertical cross-line I successively
Access the outlet spark gap MOA of this supply cell, outlet disconnecting switch 7G, the 3rd current transformer 3CT, the 3rd chopper 3CB,
After feed isolating switch 5G, then it is connected to the double-deck lower layer line indulging cross-line II, lower layer line is connected with lower section cross span K, such cloth
Put wiring and can guarantee that and all will not lose 2 main transformers and 2 power supplys under various possible accidents and inspecting state.
The present embodiment is not described partly same as Example 1.
Embodiment 3：
Dual-breaker described according to embodiments of the present invention 1 make sectionalized single busbar connection high voltage distribution installation be applied to transform old
Engineering.I.e. in the existing engineering having put into operation, the high voltage distribution installation of sectionalized single busbar connection is transformed.Referring to the drawings 9,
First, the equipment in segmentation loop is corresponded to described in the technical scheme of the high voltage distribution installation that dual-breaker makees sectionalized single busbar connection
The first disconnecting switch 1GF, the first chopper 1CBF, the first current transformer 1CTF and the 3rd disconnecting switch 3GF, and middle
Disconnecting switch 2GB of node, the second disconnecting switch 2GF, the second chopper 2CBF, the second current transformer 2CTF, the 4th isolation
Each equipment such as switch 4GF；Then formed monoblock type SF6 gas-insulated unit equipment, its compact conformation, can be seated in former
The interval location of single breaker segmentation to be installed, and original civil engineering framework need not be changed again, construction is more convenient.
Referring to the drawings 7 and accompanying drawing 8, when transforming to old engineering, by the air-insulated section gap having put into operation
After equipment uses SF6 gas-insulated unit equipment instead, you can for the power distribution equipment of chopper dually arrayed, as shown in fig. 7, also may be used
For the power distribution equipment of the single-row arrangement of chopper, as shown in Figure 8.
The present embodiment not described partly referring to embodiment 1 with embodiment 2.
Claims (4)
1. dual-breaker makees the high voltage distribution installation of sectionalized single busbar connection, includes the first sectionalized busbar（IM）With the second sectionalized busbar
（IIM）, every sectionalized busbar is connected to 2 loop lines and 1 main transformer, is connected to the first sectionalized busbar（IM）Female with the second segmentation
Line（IIM）Main transformer be respectively at least 1 telegram in reply source on #1 main transformer and #3 main transformer, and each sectionalized busbar
Line；It is characterized in that：Also include segmentation loop, it includes the first chopper（1CBF）, the second chopper（2CBF）And in
Intermediate node；First chopper（1CBF）One end pass through the first disconnecting switch（1GF）With the first sectionalized busbar（IM）Connect, another
The first current transformer is then passed through at end（1CTF）With the 3rd disconnecting switch（3GF）It is connected with intermediate node；Likewise, the second open circuit
Device（2CBF）One end pass through the second disconnecting switch（2GF）With the second sectionalized busbar（IIM）Connect, the other end then passes through the second electricity
Current transformer（2CTF）With the 4th disconnecting switch（4GF）It is connected with intermediate node；
When the 110kV outlet in transformer station be 5 times, wherein 3 times be power line when, intermediate node is divided into intermediate node 1 and centre
Node 2, intermediate node 1 passes through disconnecting switch（2GB）It is connected to #2 main transformer；Intermediate node 2 then connects a power line, warp
By the 5th disconnecting switch（5G）, the 3rd chopper（3CB）, the 3rd current transformer（3CT）And the 7th disconnecting switch（7G）Draw
Go out.
2. dual-breaker make the application on new construction of the high voltage distribution installation of sectionalized single busbar connection it is characterised in that include as
Lower step：The high voltage distribution installation providing a kind of outlet to be 4 times, twice power lines, includes the first sectionalized busbar（IM）With
Two-section bus（IIM）, every sectionalized busbar is connected to 2 loop lines and 1 main transformer, is connected to the first sectionalized busbar（IM）With
Second sectionalized busbar（IIM）Main transformer be respectively on #1 main transformer and #3 main transformer, and each sectionalized busbar at least
There is 1 time power line；Also include segmentation loop, it includes the first chopper（1CBF）, the second chopper（2CBF）And it is middle
Node；First chopper（1CBF）One end pass through the first disconnecting switch（1GF）With the first sectionalized busbar（IM）Connect, the other end
Then pass through the first current transformer（1CTF）With the 3rd disconnecting switch（3GF）It is connected with intermediate node；Likewise, the second chopper
（2CBF）One end pass through the second disconnecting switch（2GF）With the second sectionalized busbar（IIM）Connect, the other end then passes through the second electric current
Transformer（2CTF）With the 4th disconnecting switch（4GF）It is connected with intermediate node, intermediate node then passes through disconnecting switch（2GB）Connect
To #2 main transformer；
With the first disconnecting switch（1GF）, the first chopper（1CBF）, the first current transformer（1CTF）And the 3rd disconnecting switch
（3GF）Sequentially longitudinal arrangement, composition first interval, and the second disconnecting switch（2GF）, the second chopper（2CBF）, the second electric current
Transformer（2CTF）, the 4th disconnecting switch（4GF）Sequentially longitudinal arrangement, composition second interval, the first interval and the second interval are flat
Row side by side, and is located at the first sectionalized busbar in transformer station（IM）With the second sectionalized busbar（IIM）Between；Disconnecting switch（2GB）Account for
With the 3rd interval, the 3rd interval is on same longitudinal axis with the second interval；
Above-mentioned dual-breaker segmentation and the disconnecting switch connecting #2 main transformer（2GB）Take three intervals, the 3rd disconnecting switch
（3GF）With the 4th disconnecting switch（4GF）Overhead sets up one article of cross span and the 3rd disconnecting switch by framework（3GF）With the 4th every
Leave pass（4GF）Connect,
Set up one through framework again and cross over this cross span and the second sectionalized busbar from top（IIM）Vertical cross-line（I）, this vertical across
Line（I）Be connected with cross span above cross span, then longitudinal crossing second interval and the 3rd interval, after through disconnecting switch
（2GB）It is followed by #2 main transformer.
3. dual-breaker makees the application on new construction of the high voltage distribution installation of sectionalized single busbar connection it is characterised in that providing such as
5 loop line roads described in claim 1, are for wherein 3 times the technical scheme of the high voltage distribution installation of power line, and its application process includes
Have the following steps：
With the first disconnecting switch（1GF）, the first chopper（1CBF）, the first current transformer（1CTF）And the 3rd disconnecting switch
（3GF）Sequentially longitudinal arrangement, composition first interval, and the second disconnecting switch（2GF）, the second chopper（2CBF）, the second electric current
Transformer（2CTF）, the 4th disconnecting switch（4GF）Sequentially longitudinal arrangement, composition second interval, the first interval and the second interval are flat
Row side by side, and is located at the first sectionalized busbar in transformer station（IM）With the second sectionalized busbar（IIM）Between；Disconnecting switch（2GB）Account for
With the 3rd interval, the 3rd interval is on same longitudinal axis with the second interval；
Above-mentioned dual-breaker segmentation and the disconnecting switch connecting #2 main transformer（2GB）Take three intervals, the 3rd disconnecting switch
（3GF）With the 4th disconnecting switch（4GF）Overhead sets up one article of cross span and the 3rd disconnecting switch by framework（3GF）With the 4th every
Leave pass（4GF）Connect,
Set up one through framework again and cross over this cross span and the second sectionalized busbar from top（IIM）Vertical cross-line（I）, this vertical across
Line（I）Be connected with cross span above cross span, then longitudinal crossing second interval and the 3rd interval, after through disconnecting switch
（2GB）It is followed by #2 main transformer；
The power line in segmentation loop will be accessed, by the 5th disconnecting switch（5G）, the 3rd chopper（3CB）, the 3rd current transformer
（3CT）, the 7th disconnecting switch（7G）Sequentially longitudinal arrangement, composition the 4th interval, the 4th interval and the first interval are in same
On longitudinal axis；
The double-deck vertical cross-line of setting above the first interval and the 4th interval（II）, this bilayer indulges cross-line（II）With vertical cross-line（I）Flat
OK, by double-deck vertical cross-line（II）Upper layer line be sequentially ingressed into this 4th interval outlet spark gap（MOA）, the 7th disconnecting switch
（7G）, the 3rd current transformer（3CT）, the 3rd chopper（3CB）, the 5th disconnecting switch（5G）Afterwards, then be connected to double-deck vertical cross-line
（II）Lower layer line, double-deck vertical cross-line（II）Lower layer line be connected with lower section cross span.
4. dual-breaker make the high voltage distribution installation of sectionalized single busbar connection in the application transforming old engineering it is characterised in that include as
Lower step：
The high voltage distribution installation providing a kind of outlet to be 4 times, twice power lines, includes the first sectionalized busbar（IM）With second point
Section bus（IIM）, every sectionalized busbar is connected to 2 loop lines and 1 main transformer, is connected to the first sectionalized busbar（IM）With second
Sectionalized busbar（IIM）Main transformer be respectively at least 1 time on #1 main transformer and #3 main transformer, and each sectionalized busbar
Power line；Also include segmentation loop, it includes the first chopper（1CBF）, the second chopper（2CBF）And intermediate node；
First chopper（1CBF）One end pass through the first disconnecting switch（1GF）With the first sectionalized busbar（IM）Connect, the other end then leads to
Cross the first current transformer（1CTF）With the 3rd disconnecting switch（3GF）It is connected with intermediate node；Likewise, the second chopper
（2CBF）One end pass through the second disconnecting switch（2GF）With the second sectionalized busbar（IIM）Connect, the other end then passes through the second electric current
Transformer（2CTF）With the 4th disconnecting switch（4GF）It is connected with intermediate node, intermediate node then passes through disconnecting switch（2GB）Connect
To #2 main transformer；
Old engineering is line 4～5 times, main transformer is 3, has been put into operation using air-insulated by single-trunk segmental wiring
Power distribution equipment, when being transformed into the high voltage distribution installation that dual-breaker makees sectionalized single busbar connection；
The first sectionalized busbar will be originally located at（IM）With the second sectionalized busbar（IIM）Between single breaker section gap position change
Segmentation loop described in the technical scheme of the high voltage distribution installation making sectionalized single busbar connection for arrangement dual-breaker；It is specially：Will
First disconnecting switch（1GF）, the first chopper（1CBF）, the first current transformer（1CTF）With the 3rd disconnecting switch（3GF）, with
And the disconnecting switch of intermediate node（2GB）, the second disconnecting switch（2GF）, the second chopper（2CBF）, the second current transformer
（2CTF）, the 4th disconnecting switch（4GF）And its between connection all transform monoblock type SF6 gas-insulated unit equipment as；
The above-mentioned monoblock type SF6 gas-insulated unit equipment as segmentation loop is located at the first sectionalized busbar（IM）With the second segmentation
Bus（IIM）Between.
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| CN104167664A (en) * | 2014-07-11 | 2014-11-26 | 国家电网公司 | Single-bus dual-circuit breaker segmented wiring structure |
| CN105006747B (en) * | 2015-07-17 | 2018-01-05 | 温州电力设计有限公司 | A kind of sectionalized single busbar connection electrical main connecting wire structure with bus transfer disconnecting switch |
| CN105186301A (en) * | 2015-10-16 | 2015-12-23 | 远大中联控股集团有限公司 | Dual-power high-voltage supply-metering and high-voltage supply and low-voltage metering extensible no-repeat draw-out type metering equipment |
| CN105207065A (en) * | 2015-10-16 | 2015-12-30 | 远大中联控股集团有限公司 | Double-power-source high-voltage supply high-voltage metering and high-voltage supply low-voltage metering expandable no-repeat fixed metering equipment |
| CN111416430B (en) * | 2020-05-19 | 2024-04-02 | 中国电建集团福建省电力勘测设计院有限公司 | Multi-station integrated engineering station external power fusion wiring method |
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| CN101369739B (en) * | 2008-09-28 | 2010-12-01 | 上海宝钢化工有限公司 | Spare power automatic switching device and method for three-segment bus two-segment switch |
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| CN203774631U (en) * | 2014-04-18 | 2014-08-13 | 福建省电力勘测设计院 | High-voltage distribution device with dual circuit breakers in single bus sectionalizing mode |
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Address after: 350003 Gulou District, Fujian, Fuzhou No. 54 Road, No. 268 Co-patentee after: FUJIAN YONGFU POWER ENGINEERING CO., LTD. Patentee after: China Electric Power Construction Group Fujian electric survey and Design Institute Co., Ltd. Co-patentee after: Luo Minglan Address before: 350003 Gulou District, Fujian, Fuzhou No. 54 Road, No. 268 Co-patentee before: FUJIAN YONGFU POWER ENGINEERING CO., LTD. Patentee before: Fujian Electric Power Survey and Design Institute Co-patentee before: Luo Minglan |