CN103887716A - T and Pi hybrid grid wiring structure for high voltage power distribution - Google Patents
T and Pi hybrid grid wiring structure for high voltage power distribution Download PDFInfo
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- CN103887716A CN103887716A CN201410127743.5A CN201410127743A CN103887716A CN 103887716 A CN103887716 A CN 103887716A CN 201410127743 A CN201410127743 A CN 201410127743A CN 103887716 A CN103887716 A CN 103887716A
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Abstract
The invention provides a T and Pi hybrid grid wiring structure for high voltage power distribution. The T and Pi hybrid grid wiring structure for high voltage power distribution is used for wire-transformer wiring between a first high-voltage substation and a second high-voltage substation and a first low-voltage substation, a second low-voltage substation and a third low-voltage substation, and each low-voltage substation is provided with three transformers. The first transformer of the first lower-voltage substation is connected with a first bus of the first high-voltage substation, the second transformer of the first lower-voltage substation is connected with a second bus of the first high-voltage substation, and the third transformer of the first lower-voltage substation 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 of the second low-voltage substation is connected with the third bus of the first high-voltage transformer, and the third transformer of the second low-voltage substation 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 of the third low-voltage substation is connected with the second bus of the second high-voltage substation, and the third transformer of the third low-voltage substation is connected with a first bus of the second high-voltage substation. The T and Pi hybrid grid wiring structure for high voltage power distribution has the advantages of being simple in structure, economical, practical, favorable for grid operation and maintenance and the like.
Description
Technical field
The present invention 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 take 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 object of the invention is for the deficiencies in the prior art, 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.
Object of the present invention 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 present invention has following beneficial effect:
Rack wiring provided by the invention 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.
Accompanying drawing explanation
Below in conjunction with accompanying drawing, the present invention 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, be only preferred embodiment of the present invention, therefore can not limit scope of the invention process with this, the equivalence of doing according to the present patent application the scope of the claims and description changes and modifies, and all should still remain within the scope of the patent.
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.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410127743.5A CN103887716B (en) | 2014-03-31 | 2014-03-31 | A kind of T, π hybrid network bridge joint line structure for high voltage power distribution |
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| CN201410127743.5A CN103887716B (en) | 2014-03-31 | 2014-03-31 | A kind of T, π hybrid network bridge joint line structure for high voltage power distribution |
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| CN103887716A true CN103887716A (en) | 2014-06-25 |
| CN103887716B CN103887716B (en) | 2016-03-30 |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010011554A (en) * | 2008-06-24 | 2010-01-14 | Chugoku Electric Power Co Inc:The | Method of managing voltage of distribution system and method of selecting tap of transformer |
| CN201868899U (en) * | 2010-11-22 | 2011-06-15 | 河南省电力公司安阳供电公司 | Double-loop network wiring mode of middle and low-voltage distribution network |
| CN102593826A (en) * | 2012-02-21 | 2012-07-18 | 李明 | Wiring structure of high voltage distribution network |
| CN203787789U (en) * | 2014-03-31 | 2014-08-20 | 国家电网公司 | T and pi mixed net rack wiring structure applied to high voltage distribution |
-
2014
- 2014-03-31 CN CN201410127743.5A patent/CN103887716B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010011554A (en) * | 2008-06-24 | 2010-01-14 | Chugoku Electric Power Co Inc:The | Method of managing voltage of distribution system and method of selecting tap of transformer |
| CN201868899U (en) * | 2010-11-22 | 2011-06-15 | 河南省电力公司安阳供电公司 | Double-loop network wiring mode of middle and low-voltage distribution network |
| CN102593826A (en) * | 2012-02-21 | 2012-07-18 | 李明 | Wiring structure of high voltage distribution network |
| CN203787789U (en) * | 2014-03-31 | 2014-08-20 | 国家电网公司 | T and pi mixed net rack wiring structure applied to high voltage distribution |
Non-Patent Citations (2)
| Title |
|---|
| 王俊: "城市110 kV 高压配电网接线模式研究", 《湖南水利水电》 * |
| 程一鸣等: "城市110 kV 高压配电网接线方式研究", 《电网技术》 * |
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