CN207339265U - The double access wiring constructions of medium-voltage distribution transformer - Google Patents
The double access wiring constructions of medium-voltage distribution transformer Download PDFInfo
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- CN207339265U CN207339265U CN201720828118.2U CN201720828118U CN207339265U CN 207339265 U CN207339265 U CN 207339265U CN 201720828118 U CN201720828118 U CN 201720828118U CN 207339265 U CN207339265 U CN 207339265U
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- feeder line
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- pressure feeder
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Abstract
Distribution transformer wiring construction is the utility model is related to, being specifically that a kind of medium-voltage distribution transformer is double accesses wiring constructions, including the dual-ring network wiring construction that middle pressure feeder line A1 lines are formed with middle pressure feeder line A2 lines, middle pressure feeder line C1 lines and middle pressure feeder line C2 lines；Feeder line main ring network node I is pressed in being provided with dual-ring network wiring construction, the middle pressure feeder line main ring network node II and/or middle pressure feeder line main ring network node III being arranged on dual-ring network wiring construction are in parallel with middle pressure feeder line main ring network node I；Medium pressure feeder line main ring network node I, middle pressure feeder line main ring network node II, middle pressure feeder line main ring network node III provide double access points for load.The utility model can provide the dual power supply switched immediately for load, and feeder line layer, the mutual enabling capabilities of distribution transformer layer are pressed in reinforcement；Under wiring construction, troubleshooting mode is simple, can reduce the scheduled outage time, and the average annual power off time of user declines to a great extent, and greatly improves the power supply reliability of medium voltage distribution network.
Description
Technical field
Distribution transformer wiring construction is the utility model is related to, it is especially a kind of that the double electricity switched immediately are provided for load
Source powers, and feeder line layer, the mutual enabling capabilities of distribution transformer layer are pressed in reinforcement；Troubleshooting mode is simple, and energy reduction plan stops
The electric time, the double access wiring of medium-voltage distribution transformer of scheduled outage time can be reduced by improving the power supply reliability of medium voltage distribution network
Structure.
Background technology
As distribution network users improve power supply quality requirement increasingly, reliability index becomes in distribution network planning to be paid close attention to
Hot spot.Middle pressure feeder line layer wiring construction mainly has dual-ring network, Single-ring network, biradial, single radiation and N for one for isotype.Examine
Consider the double access wiring constructions of distribution transformer layer, especially realize dual power supply, dual-ring network (no interannular contact) feeder line layer wiring
Under structural condition, implement the double accesses of distribution transformer to part important area, can further lift power supply reliability.With landing
The raising of area's load density, middle pressure feeder line layer wire area gridding, is conducive to the realization of " double accesses " Connection Mode.To city
Saturated density upper zone, target net should be paid the utmost attention to power as lifting using distribution transformer " double accesses " wiring construction
The key measure of reliability, and accordingly simplify other measures.
State Intellectual Property Office 2013 year 09 month discloses a Publication No. CN102368612A on the 25th, entitled《One
Three pairs of modes of connection of kind medium voltage distribution network》, the wiring construction is high voltage substation dual power supply, feeder line layer double loop and distribution
The double accesses of transformer layer, have that the fault outage time is short, processing mode is simple, reliability is high, and model is relatively fixed, is easy to expand
The features such as exhibition, grid structure is clear, and the method for operation is flexible.Distribution transforming " double accesses " is opened using the switching of distribution transforming 10kV sides Bidirectional load
Close, realize that 10kV lateral incisions are changed, this wiring not yet considers low-voltage customer not power down, i.e., really realizes the double accesses of user.
State Intellectual Property Office discloses a Publication No. CN201420258673.2 on October 1st, 2014, entitled
《A kind of medium voltage distribution network wiring construction》Utility model patent.The patent relates generally to the middle pressure feeder line between high voltage substation
Layer wiring construction, forms feeder line layer dual power supply, hand in hand formula wiring construction, improves circuit reliability and utilization rate.
State Intellectual Property Office discloses a Publication No. ZL201520873605.1 on April 6th, 2016, entitled
《A kind of chain type group network system of medium voltage distribution network》, " four pairs of lines " spare wiring construction forms the double electricity of two groups of feeder line layers each other
Source, dual-ring network wiring construction, higher than the power supply reliability of traditional wired structure, troubleshooting mode is simple.
Above-mentioned technical proposal only relates to middle pressure feeder line layer wiring construction, or three pairs of wiring, realizes power supply reliability, but still
The double accesses of low-voltage customer are not realized really, power supply reliability still has the space further improved.
Utility model content
The purpose of this utility model is to provide a kind of dual power supply for providing for load and switching immediately, and feedback is pressed in reinforcement
Line layer, the mutual enabling capabilities of distribution transformer layer；Troubleshooting mode is simple, can reduce the scheduled outage time, is press-fitted in raising
The power supply reliability of power grid can reduce the double access wiring constructions of medium-voltage distribution transformer of scheduled outage time.
The technical solution used to achieve the above object is such, i.e., medium-voltage distribution transformer is double accesses wiring knots
Structure, including the dual-ring network wiring that middle pressure feeder line A1 lines are formed with middle pressure feeder line A2 lines, middle pressure feeder line C1 lines and middle pressure feeder line C2 lines
Structure；It is characterized in that：
Feeder line main ring network node I is pressed in being provided with dual-ring network wiring construction, is arranged on dual-ring network wiring construction
Middle pressure feeder line main ring network node II and/or middle pressure feeder line main ring network node III are in parallel with middle pressure feeder line main ring network node I；
Medium pressure feeder line main ring network node I, middle pressure feeder line main ring network node II, middle pressure feeder line main ring network node III are negative
Carry and double access points are provided；
Medium pressure feeder line main ring network node I is medium voltage switchyard, and medium pressure feeder line main ring network node II presses off in being
Close station to form with supporting ring main unit, medium pressure feeder line main ring network node III is two supporting ring main unit compositions；
The electric energy output end of medium pressure feeder line main ring network node I is provided with two three-level dijection wiring constructions and one two
Level dijection wiring construction, a three-level dijection wiring construction in two three-level dijection wiring constructions include being serially connected in middle pressure feeder line
Three public double changed into switchhouse of the electric energy output end of main ring network node I；Another three-level dijection wiring construction includes concatenation
In two public double changed into switchhouse of the electric energy output end of middle pressure feeder line main ring network node I, become distribution with described two public pair
The public monotropic switchgear house or public box type transformer that public double changed into switchhouse in room positioned at end concatenate；The two level dijection
Wiring construction is matched somebody with somebody including being connected public double become of First with the electric energy output end of middle pressure feeder line main ring network node I by middle pressure feeder line
Electric room I, second public double changed into switchhouse II being respectively connected by independent middle pressure feeder line with the public double changed into switchhouse I of First
With public monotropic switchgear house I.
Structure described in the utility model this have the advantage that：Immediately the dual power supply switched can be provided for load, strengthened
Middle pressure feeder line layer, the mutual enabling capabilities of distribution transformer layer；Under wiring construction, troubleshooting mode is simple, and energy reduction plan stops
Electric time, the average annual power off time of user decline to a great extent, and greatly improve the power supply reliability of medium voltage distribution network.
Brief description of the drawings
The utility model can be further illustrated by the nonlimiting examples that attached drawing provides.
Fig. 1 is the structure diagram of the utility model.
Embodiment
The utility model is described in further detail with reference to the accompanying drawings and examples：
Referring to attached drawing 1, the double access wiring constructions of medium-voltage distribution transformer in figure, including middle pressure feeder line A1 lines are presented with middle pressure
The dual-ring network wiring construction 1 that line A2 lines, middle pressure feeder line C1 lines and middle pressure feeder line C2 lines are formed；It is characterized in that：
Feeder line main ring network node I 2 is pressed in being provided with dual-ring network wiring construction 1, is arranged on dual-ring network wiring construction 1
Middle pressure feeder line main ring network node II 3 and/or middle pressure feeder line main ring network node III 4 press feeder line main ring network node I 2 in parallel with middle；
Medium pressure feeder line main ring network node I 2, middle pressure feeder line main ring network node II 3, middle pressure feeder line main ring network node III 4
Double access points are provided for load；
Medium pressure feeder line main ring network node I 2 is medium voltage switchyard, and medium pressure feeder line main ring network node II 3 is middle pressure
Switchyard is formed with supporting ring main unit, and medium pressure feeder line main ring network node III 4 forms for two supporting ring main units 2；
The electric energy output end of medium pressure feeder line main ring network node I 2 is provided with two three-level dijection wiring constructions 5 and one
Two level dijection wiring construction 6, a three-level dijection wiring construction 5 in two three-level dijection wiring constructions 5 are included in being serially connected in
Press three public double changed into switchhouse 301 of the electric energy output end of feeder line main ring network node I 2；Another three-level dijection wiring knot
Structure 5 includes two public double changed into switchhouse 301 for being serially connected in the electric energy output end of middle pressure feeder line main ring network node I 2, with described two
The public monotropic switchgear house 302 or public that public double changed into switchhouse 301 in the public double changed into switchhouse 301 of platform positioned at end concatenate
Box type transformer；The two level dijection wiring construction 6 includes the electric energy by middle pressure feeder line and middle pressure feeder line main ring network node I 2
Output terminal connects the public double changed into switchhouse I 3011 of First, respectively passes through the public double change distribution of independent middle pressure feeder line and First
The second public double changed into switchhouse II 3012 and public monotropic switchgear house I 3021 that room I 3011 connects.
In above-described embodiment, preferably：The electric energy output end of medium pressure feeder line main ring network node I 2 is also presented by middle pressure
Line is connected with load switchgear house 7, which is the special switchgear house of user, public monotropic switchgear house or public box change
Depressor 303.
In above-described embodiment, preferably：The electric energy output of medium pressure feeder line main ring network node II 3 presses feeder line simultaneously by middle
It is associated with public double changed into switchhouse III 3013 and public double changed into switchhouse IV 3014, the end of public double changed into switchhouse III 3013
Concatenate a public double changed into switchhouse V 3015, the ends of public double changed into switchhouse IV 3014 concatenates one and public monotropic matches somebody with somebody
Electric room or public box type transformer or public bench type transformer；
Medium pressure feeder line main ring network node II 3 electric energy output also by it is middle pressure feeder line be connected with special switchgear house 304,
Or with monotropic switchgear house or public box type transformer or public bench type transformer.
In above-described embodiment, preferably：The electric energy output of medium pressure feeder line main ring network node III 4 presses feeder line simultaneously by middle
It is associated with public double changed into switchhouse III 3013 and public double changed into switchhouse IV 3014, the end of public double changed into switchhouse III 3013
Concatenate a public double changed into switchhouse V 3015, the ends of public double changed into switchhouse IV 3014 concatenates one and public monotropic matches somebody with somebody
Electric room or public box type transformer or public bench type transformer；
Medium pressure feeder line main ring network node II 3 electric energy output also by it is middle pressure feeder line be connected with special switchgear house or
With monotropic switchgear house or public box type transformer 303 or public bench type transformer.
In above-described embodiment, medium pressure feeder line main ring network node III 4 can be used as main ring network node, can also make dijection section
Point.
Structure described in above-described embodiment is compared with traditional feeder line layer connection of ring power network structure, distribution transformer described in the utility model
The double access wiring constructions of device specify that independent switch station, switchyard main ring network section different from supporting ring main unit, dual stage ring main unit etc.
Point, and " three-level dijection ", " two-stage dijection " and " level-one dijection " etc. are suitable for different type distribution transformer (box-type transformation
Device, rack transformer, separate unit distribution transformer, double changed into switchhouse) etc. " double accesses " specific wiring construction.The distribution transformer
Device " double accesses " wiring construction can provide the dual power supply switched immediately for load, and troubleshooting mode is simple, can reduce meter
Power off time is drawn, the average annual power off time of user declines to a great extent, and the power supply reliability of medium voltage distribution network is greatly improved.Distribution transformer
" double accesses " pattern can further strengthen the mutual support between each level of power grid, and can simplify power distribution automation and powered
The allocation plan of operation, reduces power distribution automation and livewire work investment, produces preferable economic benefit.
Obviously, above-mentioned all embodiments are the part of the embodiment of the utility model, instead of all the embodiments.It is based on
Embodiment described in the utility model, those skilled in the art are obtained all other without making creative work
Embodiment, belongs to the category of the utility model protection.
In conclusion due to said structure, the dual power supply switched immediately can be provided for load, feeder line is pressed in reinforcement
Layer, the mutual enabling capabilities of distribution transformer layer；Under wiring construction, troubleshooting mode is simple, can reduce the scheduled outage time, uses
The average annual power off time in family declines to a great extent, and greatly improves the power supply reliability of medium voltage distribution network.
Claims (4)
1. a kind of double access wiring constructions of medium-voltage distribution transformer, including middle pressure feeder line A1 lines are presented with middle pressure feeder line A2 lines, middle pressure
The dual-ring network wiring construction (1) that line C1 lines and middle pressure feeder line C2 lines are formed；It is characterized in that：
Middle pressure feeder line main ring network node I (2) is provided with dual-ring network wiring construction (1), is arranged on dual-ring network wiring construction (1)
On middle pressure feeder line main ring network node II (3) and/or middle pressure feeder line main ring network node III (4) and middle pressure feeder line main ring network node I
(2) it is in parallel；
Medium pressure feeder line main ring network node I (2), middle pressure feeder line main ring network node II (3), middle pressure feeder line main ring network node III
(4) double access points are provided for load；
Medium pressure feeder line main ring network node I (2) is medium voltage switchyard, and medium pressure feeder line main ring network node II (3) is middle pressure
Switchyard is formed with supporting ring main unit, and medium pressure feeder line main ring network node III (4) is two supporting ring main unit (2) compositions；
The electric energy output end of medium pressure feeder line main ring network node I (2) is provided with two three-level dijection wiring constructions (5) and one
Two level dijection wiring construction (6), a three-level dijection wiring construction (5) in two three-level dijection wiring constructions (5) include string
It is connected on three public double changed into switchhouse (301) of the electric energy output end of middle pressure feeder line main ring network node I (2)；Another three-level
Dijection wiring construction (5) includes two public double change distribution for being serially connected in the electric energy output end of middle pressure feeder line main ring network node I (2)
Room (301), the public affairs that public double changed into switchhouse (301) with being located at end in described two public double changed into switchhouse (301) concatenate
With monotropic switchgear house (302) or public box type transformer；The two level dijection wiring construction (6) is included by middle pressure feeder line with
The electric energy output end connection public double changed into switchhouse I (3011) of First of feeder line main ring network node I (2) are pressed, respectively by independent
Middle second public double changed into switchhouse II (3012) being connected with the public double changed into switchhouse I (3011) of First of pressure feeder line and public
Monotropic switchgear house I (3021).
2. the double access wiring constructions of medium-voltage distribution transformer according to claim 1；It is characterized in that：Medium pressure feeder line
The electric energy output end of main ring network node I (2) is also connected by middle pressure feeder line with load switchgear house (7), which is
The special switchgear house of user, public monotropic switchgear house or public box type transformer (303).
3. the double access wiring constructions of medium-voltage distribution transformer according to claim 1；It is characterized in that：Medium pressure feeder line
The electric energy output of main ring network node II (3) is parallel with public double changed into switchhouse III (3013) by middle pressure feeder line and public double become is matched somebody with somebody
Electric room IV (3014), the end of public double changed into switchhouse III (3013) concatenate a public double changed into switchhouse V (3015),
The end of public double changed into switchhouse IV (3014) concatenates a public monotropic switchgear house or public box type transformer or public affairs
With bench type transformer；
Medium pressure feeder line main ring network node II (3) electric energy output also by it is middle pressure feeder line be connected with special switchgear house (304),
Or with monotropic switchgear house or public box type transformer or public bench type transformer.
4. the double access wiring constructions of medium-voltage distribution transformer according to claim 1；It is characterized in that：Medium pressure feeder line
The electric energy output of main ring network node III (4) is parallel with public double changed into switchhouse III (3013) by middle pressure feeder line and public double become is matched somebody with somebody
Electric room IV (3014), the end of public double changed into switchhouse III (3013) concatenate a public double changed into switchhouse V (3015),
The end of public double changed into switchhouse IV (3014) concatenates a public monotropic switchgear house or public box type transformer or public affairs
With bench type transformer；
The electric energy output of medium pressure feeder line main ring network node II (3) is also connected with special switchgear house by middle pressure feeder line or uses
Monotropic switchgear house or public box type transformer (303) or public bench type transformer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720828118.2U CN207339265U (en) | 2017-07-10 | 2017-07-10 | The double access wiring constructions of medium-voltage distribution transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720828118.2U CN207339265U (en) | 2017-07-10 | 2017-07-10 | The double access wiring constructions of medium-voltage distribution transformer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207339265U true CN207339265U (en) | 2018-05-08 |
Family
ID=62427288
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720828118.2U Expired - Fee Related CN207339265U (en) | 2017-07-10 | 2017-07-10 | The double access wiring constructions of medium-voltage distribution transformer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207339265U (en) |
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2017
- 2017-07-10 CN CN201720828118.2U patent/CN207339265U/en not_active Expired - Fee Related
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180508 Termination date: 20180710 |