CN203787789U - T and pi mixed net rack wiring structure applied to high voltage distribution - Google Patents
T and pi mixed net rack wiring structure applied to high voltage distribution Download PDFInfo
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- CN203787789U CN203787789U CN201420153514.6U CN201420153514U CN203787789U CN 203787789 U CN203787789 U CN 203787789U CN 201420153514 U CN201420153514 U CN 201420153514U CN 203787789 U CN203787789 U CN 203787789U
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Abstract
The utility model provides a T and pi mixed net rack wiring structure applied to high voltage distribution. The structure is used for wire transformer unit wiring between first and second high voltage substations and first, second and third low voltage substations. Each low voltage substation is provided with three transformers. The first transformer of the first low voltage substation is connected with a first bus of the first high voltage substation. The second transformer is connected with a second bus of the first high voltage substation. The third transformer is connected with a third bus of the first high voltage substation. The first transformer of the second low voltage substation is connected with the second bus of the first high voltage substation. The second transformer is connected with the third bus of the first high voltage substation. The third transformer is connected with a second bus of the second high voltage substation. The first transformer of the third low voltage substation is connected with the third bus of the first high voltage substation. The second transformer is connected with the second bus of the second high voltage substation. The third transformer is connected with a first bus of the second high voltage substation. The structure is simple, economical, practical and the like, and is conducive to the operation and the maintenance of a net rack.
Description
Technical field
The utility model relates to a kind of line change group wiring construction for high voltage power distribution.
Background technology
At present, the rack mode of connection of high voltage distribution network is taking double back chain type and three T wiring as main, double back chain type adopts internal bridge mostly, be conducive to the confession of falling of load, be applicable to the central area of the important cities such as provincial capital, enter three and go out wiring but the 110kV of transformer station side need adopt two of bus to enter scene 2 or three, wiring is the most complicated, number of switches is maximum, and element failure rate is high; The wiring of T shape structure is comparatively simple, and small investment, but under circuit failure condition, fault incidence is larger; Therefore, do not lose load angle from fault, double back chain type wiring reliability is higher, and from the viewpoint of element failure rate, three T wiring reliabilities are higher, and the high pressure distribution of current city cannot realize seamlessly transitting of the mode of connection well, faces the problem of building and tear open again.
Summary of the invention
The purpose of this utility model is for the deficiencies in the prior art, and a kind of T for high voltage power distribution, π hybrid network bridge joint line structure of simple in structure, economical and practical, the operation and maintenance that is conducive to rack is provided.
The purpose of this utility model realizes by following technical solution:
Embodiment mono-: a kind of T for high voltage power distribution, π hybrid network bridge joint line structure, for the line change group wiring between first, second high voltage substation and first, second, third substation, it is characterized in that: each substation is equipped with three transformers;
The first transformer of the first substation is connected with the first bus of the first high voltage substation, and the second transformer is connected with the second bus of the first high voltage substation, and the 3rd transformer is connected with the triple bus-bar of the first high voltage substation;
The first transformer of the second substation is connected with the second bus of the first high voltage substation, and the second transformer is connected with the triple bus-bar of the first high voltage substation, and the 3rd transformer is connected with the second bus of the second high voltage substation;
The first transformer of the 3rd substation is connected with the triple bus-bar of the first high voltage substation, and the second transformer station is connected with the second bus of the second high voltage substation, and the first bus of the second high voltage substation of the 3rd transformer station connects.
Embodiment bis-: a kind of T for high voltage power distribution, π hybrid network bridge joint line structure, it is characterized in that: for the line change group wiring between first, second high voltage substation and first, second, third substation, it is characterized in that: the first, the 3rd substation arranges three transformers, the second substation arranges two transformers;
The first transformer of the first substation is connected with the first bus of the first high voltage substation, and the second transformer is connected with the second bus of the first high voltage substation, and the 3rd transformer is connected with the first bus of the second high voltage substation;
The first transformer of the second substation is connected with the first bus of the second high voltage substation, and the second transformer is connected with the second bus of the first high voltage substation;
The first transformer of the 3rd substation is connected with the second bus of the first high voltage substation, and the second transformer station is connected with the first bus of the second high voltage substation, and the second bus of the second high voltage substation of the 3rd transformer station connects.
Embodiment tri-: a kind of T for high voltage power distribution, π hybrid network bridge joint line structure, for the line change group wiring between first, second high voltage substation and first, second, third substation, it is characterized in that: each substation is equipped with two transformers;
The first transformer of the first substation is connected with the first bus of the first high voltage substation, and the second transformer is connected with the first bus of the second high voltage substation;
The first transformer of the second substation is connected with the first bus of the second high voltage substation, and the second transformer is connected with the second bus of the first high voltage substation;
The first transformer of the 3rd substation is connected with the second bus of the first high voltage substation, and the second transformer station is connected with the second bus of the second high voltage substation.
The utlity model has following beneficial effect:
The rack wiring that the utility model provides is between different 220kV transformer station, with 3 110kV transformer stations of many times 110kV line powerings, wherein part circuit is directly connected to 110kV transformer station by the radiation of 220kV station and powers, the mutual T of all the other 110kV circuits connects, belong to the combination of chain type wiring, this rack wiring has π concurrently and connects the feature connecing with T, the region in the footpath that is applicable to original rack in A, category-B service area because conductor cross-section is former thereby power supply capacity is limited but corridor resource preciousness is difficult to break a new path.Technical characterstic is as follows:
(1) Mei Zuo transformer station scale is 2～3 main transformers.
(2) 110kV transformer station high-pressure side can adopt and expand interior bridge or the wiring of interior bridge+line change group, and under equal substation capacity, floor space is more double-stranded little;
(3) nothing impact between high voltage side of transformer;
(4) 110kV of transformer station two to three is back into line, few compared with double back chain type;
(5) 110kV transformer station cost is low;
(6) 110kV transformer station maintenance expense is little, simple to operate, fail safe is good, is convenient to County Power Grid company operation and maintenance;
(7) between 220kV transformer station, need 1～2 large-section lead circuit;
(8) 3～4 loop line roads can meet N-1 requirement, and 5～6 loop line roads can meet N-2 requirement;
(9) two～tri-times overhead transmission line mostly is wiring on the same tower, a loop line road interruption maintenance, and impact moves with tower All other routes;
(10) have π concurrently and connect the feature connecing with T, be convenient to be connect or radiation wiring transition by π, be therefore applicable to existing rack and connect and territory, radiation Wei Zhu county 110kV electrical network with π.
Brief description of the drawings
Below in conjunction with accompanying drawing, the utility model is described in further detail.
Fig. 1 is the circuit diagram of embodiment mono-.
Fig. 2 is the circuit diagram of embodiment bis-.
Fig. 3 is the circuit diagram of embodiment tri-.
Embodiment
Embodiment mono-: shown in Fig. 1, a kind of T for high voltage power distribution, π hybrid network bridge joint line structure, for the line change group wiring between first, second high voltage substation 1,2 and first, second, third substation 3,4,5, each substation is equipped with three transformers;
The first transformer of the first substation 3 is connected with the first bus of the first high voltage substation 1, and the second transformer is connected with the second bus of the first high voltage substation 1, and the 3rd transformer is connected with the triple bus-bar of the first high voltage substation 1;
The first transformer of the second substation 4 is connected with the second bus of the first high voltage substation 1, and the second transformer is connected with the triple bus-bar of the first high voltage substation 1, and the 3rd transformer is connected with the second bus of the second high voltage substation 2;
The first transformer of the 3rd substation 5 is connected with the triple bus-bar of the first high voltage substation 1, and the second transformer station is connected with the second bus of the second high voltage substation 2, and the first bus of the second high voltage substation 2 of the 3rd transformer station connects.
Embodiment bis-: shown in Fig. 2, a kind of T for high voltage power distribution, π hybrid network bridge joint line structure, it is characterized in that: for the line change group wiring between first, second high voltage substation 1,2 and first, second, third substation 3,4,5, the first, the 3rd substation 3,5 arranges three transformers, and the second substation 4 arranges two transformers;
The first transformer of the first substation 3 is connected with the first bus of the first high voltage substation 1, and the second transformer is connected with the second bus of the first high voltage substation 1, and the 3rd transformer is connected with the first bus of the second high voltage substation 2;
The first transformer of the second substation 4 is connected with the first bus of the second high voltage substation 2, and the second transformer is connected with the second bus of the first high voltage substation 1;
The first transformer of the 3rd substation 5 is connected with the second bus of the first high voltage substation 1, and the second transformer station is connected with the first bus of the second high voltage substation 2, and the second bus of the second high voltage substation 2 of the 3rd transformer station connects.
Embodiment tri-: shown in Fig. 3, a kind of T for high voltage power distribution, π hybrid network bridge joint line structure, for the line change group wiring between first, second high voltage substation 1,2 and first, second, third substation 3,4,5, each substation is equipped with two transformers;
The first transformer of the first substation 3 is connected with the first bus of the first high voltage substation 1, and the second transformer is connected with the first bus of the second high voltage substation 2;
The first transformer of the second substation 4 is connected with the first bus of the second high voltage substation 2, and the second transformer is connected with the second bus of the first high voltage substation 1;
The first transformer of the 3rd substation 5 is connected with the second bus of the first high voltage substation 1, and the second transformer station is connected with the second bus of the second high voltage substation 2.
The above, it is only preferred embodiment of the present utility model, therefore can not limit the scope that the utility model is implemented with this, the equivalence of doing according to the utility model claim and description changes and modifies, and all should still belong in the scope that the utility model patent contains.
Claims (3)
1. for T, the π hybrid network bridge joint line structure of high voltage power distribution, for the line change group wiring between first, second high voltage substation and first, second, third substation, it is characterized in that: each substation is equipped with three transformers;
The first transformer of the first substation is connected with the first bus of the first high voltage substation, and the second transformer is connected with the second bus of the first high voltage substation, and the 3rd transformer is connected with the triple bus-bar of the first high voltage substation;
The first transformer of the second substation is connected with the second bus of the first high voltage substation, and the second transformer is connected with the triple bus-bar of the first high voltage substation, and the 3rd transformer is connected with the second bus of the second high voltage substation;
The first transformer of the 3rd substation is connected with the triple bus-bar of the first high voltage substation, and the second transformer station is connected with the second bus of the second high voltage substation, and the first bus of the second high voltage substation of the 3rd transformer station connects.
2. the T for high voltage power distribution, π hybrid network bridge joint line structure, it is characterized in that: for the line change group wiring between first, second high voltage substation and first, second, third substation, it is characterized in that: the first, the 3rd substation arranges three transformers, the second substation arranges two transformers;
The first transformer of the first substation is connected with the first bus of the first high voltage substation, and the second transformer is connected with the second bus of the first high voltage substation, and the 3rd transformer is connected with the first bus of the second high voltage substation;
The first transformer of the second substation is connected with the first bus of the second high voltage substation, and the second transformer is connected with the second bus of the first high voltage substation;
The first transformer of the 3rd substation is connected with the second bus of the first high voltage substation, and the second transformer station is connected with the first bus of the second high voltage substation, and the second bus of the second high voltage substation of the 3rd transformer station connects.
3. for T, the π hybrid network bridge joint line structure of high voltage power distribution, for the line change group wiring between first, second high voltage substation and first, second, third substation, it is characterized in that: each substation is equipped with two transformers;
The first transformer of the first substation is connected with the first bus of the first high voltage substation, and the second transformer is connected with the first bus of the second high voltage substation;
The first transformer of the second substation is connected with the first bus of the second high voltage substation, and the second transformer is connected with the second bus of the first high voltage substation;
The first transformer of the 3rd substation is connected with the second bus of the first high voltage substation, and the second transformer station is connected with the second bus of the second high voltage substation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420153514.6U CN203787789U (en) | 2014-03-31 | 2014-03-31 | T and pi mixed net rack wiring structure applied to high voltage distribution |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420153514.6U CN203787789U (en) | 2014-03-31 | 2014-03-31 | T and pi mixed net rack wiring structure applied to high voltage distribution |
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| Publication Number | Publication Date |
|---|---|
| CN203787789U true CN203787789U (en) | 2014-08-20 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420153514.6U Expired - Lifetime CN203787789U (en) | 2014-03-31 | 2014-03-31 | T and pi mixed net rack wiring structure applied to high voltage distribution |
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| CN (1) | CN203787789U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103887716A (en) * | 2014-03-31 | 2014-06-25 | 国家电网公司 | T and Pi hybrid grid wiring structure for high voltage power distribution |
| CN108565851A (en) * | 2017-12-26 | 2018-09-21 | 金华电力设计院有限公司 | High-voltage fence model and its method for transformation, device |
-
2014
- 2014-03-31 CN CN201420153514.6U patent/CN203787789U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103887716A (en) * | 2014-03-31 | 2014-06-25 | 国家电网公司 | T and Pi hybrid grid wiring structure for high voltage power distribution |
| CN103887716B (en) * | 2014-03-31 | 2016-03-30 | 国家电网公司 | A kind of T, π hybrid network bridge joint line structure for high voltage power distribution |
| CN108565851A (en) * | 2017-12-26 | 2018-09-21 | 金华电力设计院有限公司 | High-voltage fence model and its method for transformation, device |
| CN108565851B (en) * | 2017-12-26 | 2021-10-29 | 金华电力设计院有限公司 | High-voltage power grid model and conversion method and device thereof |
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|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20140820 Effective date of abandoning: 20160330 |
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| C25 | Abandonment of patent right or utility model to avoid double patenting |