CN218897086U - 330KV long-distance line-changing quick power-transferring electric main wiring structure - Google Patents
330KV long-distance line-changing quick power-transferring electric main wiring structure Download PDFInfo
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- CN218897086U CN218897086U CN202222004996.6U CN202222004996U CN218897086U CN 218897086 U CN218897086 U CN 218897086U CN 202222004996 U CN202222004996 U CN 202222004996U CN 218897086 U CN218897086 U CN 218897086U
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- 229910052802 copper Inorganic materials 0.000 claims description 3
- 239000010949 copper Substances 0.000 claims description 3
- 238000001816 cooling Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E40/00—Technologies for an efficient electrical power generation, transmission or distribution
- Y02E40/30—Reactive power compensation
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Abstract
The utility model relates to a power supply technical field, specifically, relate to an electric main wiring structure of 330KV long distance line change group fast transfer power supply, can solve traditional wiring form master equipment and can't transport fast, and be difficult to reuse, economic cost is big, can't realize the problem of the demand of fast transfer power supply. The main wiring structure includes: the high-voltage side of the movable transformer is connected with a 330kV bus through a high-voltage wiring structure, and the high-voltage wiring structure adopts a double-bus double-section wiring mode; the medium-voltage side of the movable transformer is connected with a 110kV bus through a medium-voltage wiring structure, and the medium-voltage wiring structure adopts a single bus wiring mode; the low-voltage side of the movable transformer is suspended to run.
Description
Technical Field
The application relates to the technical field of power supply, in particular to an electrical main wiring structure for fast power conversion of 330KV long-distance line transformer groups.
Background
With the continuous development of social economy, the power load density is increased increasingly, and the demand of rapid load transfer exists in a 330kV power system aiming at normal or emergency situations of a power grid such as a foundation, a technical improvement, a fault and the like. The 330kV ultrahigh-voltage in-station equipment is high in importance, complex in arrangement and difficult in power failure.
At present, the traditional switching power wiring system comprises the following components: constructing a conventional main transformer, wherein a high-voltage side needs to be newly built with a complete main transformer incoming line interval, and is connected to a bus in a transformer substation through interval equipment; the medium-voltage side needs to be newly built with a complete main transformer incoming line interval and is connected to a bus in a transformer substation through interval equipment; the low-voltage side needs to be newly built with reactive equipment such as capacitance reactance; and is matched with auxiliary facilities for building civil engineering. When the power supply is completed, the equipment is taken out of operation, and related facilities are required to be removed.
However, the conventional wiring type main equipment cannot be transported quickly, is difficult to recycle, has high economic cost, and cannot meet the requirement of quick power supply switching.
Disclosure of Invention
In order to solve the problem that traditional wiring form master equipment can't transport fast, and be difficult to reuse, economic cost is big, can't realize fast power supply's demand that changes, this application provides a 330KV long distance line becomes quick electric main wiring structure who changes power supply:
according to an aspect of the embodiments of the present application, there is provided an electrical main wiring structure for 330KV long-distance line-change fast power transfer, the main wiring structure comprising:
the high-voltage side of the movable transformer is connected with a 330kV bus through a high-voltage wiring structure, and the high-voltage wiring structure adopts a double-bus double-section wiring mode;
the medium-voltage side of the movable transformer is connected with a 110kV bus through a medium-voltage wiring structure, and the medium-voltage wiring structure adopts a single bus wiring mode;
the low-voltage side of the movable transformer is suspended to run.
In some embodiments, the mobile transformer is disposed inside a station of an end station outlet frame, disposed along an outlet direction.
In some embodiments, the high voltage wiring structure is disposed on a side proximate to the substation.
In some embodiments, the medium voltage wiring structure is disposed on a side proximate to the end station.
In some embodiments, the high-voltage side of the mobile transformer is connected to an overhead line through a first lightning arrester, and the overhead line is sequentially connected to a second lightning arrester, a voltage transformer and a high-voltage distribution device system, and is connected to a transformer substation 330kV bus, the first lightning arrester is arranged at a position close to the mobile transformer, and the second lightning arrester, the voltage transformer and the high-voltage distribution device system are all arranged at a position close to the transformer substation.
In some embodiments, the medium voltage side of the mobile transformer is connected to the 110kV bus of the terminal station via a third lightning arrester disposed proximate to the mobile transformer and a medium voltage distribution device system disposed proximate to the terminal station.
In some embodiments, the low-voltage side of the movable transformer is connected with the fourth lightning arrester through a copper bar and runs in a suspended mode.
The beneficial effects of the application are that; by arranging the movable transformer, the main equipment can be transported quickly; the high-voltage side of the movable transformer is connected with the 330kV bus through the high-voltage wiring structure, and the middle-voltage side of the movable transformer is connected with the 110kV bus through the middle-voltage wiring structure, so that the arrangement mode is simplified, the movable transformer can be reused, and the cost is reduced; further, through suspending operation of the low-voltage side of the movable transformer, reactive equipment of the low-voltage side of the traditional main transformer is canceled, so that the equipment is reduced in size and convenient to transport, the requirement of rapid power supply switching can be met, and the movable transformer has great significance in improving the safe operation level of a power grid and guaranteeing uninterrupted power supply.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, a brief description will be given below of the drawings that are needed in the embodiments or the prior art descriptions, it being obvious that the drawings in the following description are some embodiments of the present application, and that other drawings may be obtained according to these drawings without inventive effort to a person skilled in the art.
Fig. 1 shows an electrical main wiring schematic of an electrical main wiring structure provided in an embodiment of the present application.
Description of the drawings: 1. a mobile transformer; 2. a first lightning arrester; 3. an overhead line; 4. a second lightning arrester; 5. a voltage transformer; 6. a high voltage power distribution device system; 7. a third lightning arrester; 8. a medium voltage distribution device system; 9. and a fourth lightning arrester.
Detailed Description
For purposes of clarity, embodiments and advantages of the present application, the following description will make clear and complete the exemplary embodiments of the present application, with reference to the accompanying drawings in the exemplary embodiments of the present application, it being apparent that the exemplary embodiments described are only some, but not all, of the examples of the present application.
It should be noted that the brief description of the terms in the present application is only for convenience in understanding the embodiments described below, and is not intended to limit the embodiments of the present application. Unless otherwise indicated, these terms should be construed in their ordinary and customary meaning.
The terms "first," second, "" third and the like in the description and in the claims and in the above-described figures are used for distinguishing between similar or similar objects or entities and not necessarily for limiting a particular order or sequence, unless otherwise indicated. It is to be understood that the terms so used are interchangeable under appropriate circumstances.
The terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a product or apparatus that comprises a list of elements is not necessarily limited to all elements explicitly listed, but may include other elements not expressly listed or inherent to such product or apparatus.
The following describes an electrical main wiring structure for 330KV long-distance line transformer group quick power transfer provided by the application with reference to fig. 1.
Fig. 1 is a schematic cross-sectional view of a concrete beam formwork according to an embodiment of the present application.
As shown in fig. 1, the main wiring structure includes:
the high-voltage side of the mobile transformer 1 is connected with a 330kV bus through a high-voltage wiring structure, and the high-voltage wiring structure adopts a double-bus double-section wiring mode; the movable transformer 1 is connected with a 110kV bus through a medium-voltage wiring structure, and the medium-voltage wiring structure adopts a single bus wiring mode; the low-voltage side of the movable transformer 1 runs in a suspended mode.
The type of the electrical equipment should consider economic cost and equipment structure, and the environmental conditions of the region are combined, in some embodiments of the application, the mobile transformer 1 is a 330kV vehicle-mounted mobile transformer 1, the type of the mobile transformer 1 is 180MVA, 345+/-2.5%/121/(10.5) kV transformer, the wiring form is YNa0+d, the impedance voltage is Uk1-2=10.5%, uk1-3=24% and Uk2-3=13%, the cooling mode is a forced oil circulation air cooling form, and the low-voltage side is not added with low-voltage outgoing lines and reactive equipment.
In some embodiments, as shown in fig. 1, the movable transformer is disposed inside a station of an end station outlet frame, and is arranged in an outlet direction.
In some embodiments, as shown in fig. 1, the high voltage wiring structure is disposed on a side near the substation and the medium voltage wiring structure is disposed on a side near the end station.
In some embodiments, as shown in fig. 1, the high-voltage side of the mobile transformer is connected to an overhead line through a first lightning arrester 2, and is sequentially connected to a second lightning arrester 4, a voltage transformer and a high-voltage distribution device system through the overhead line, and is connected to a transformer substation 330kV bus, the first lightning arrester 2 is disposed at a position close to the mobile transformer, and the second lightning arrester 4, the voltage transformer and the high-voltage distribution device system are all disposed at a position close to the transformer substation.
The high-voltage connection structure comprises a first lightning arrester 2, an overhead line 3, a second lightning arrester 4, a voltage transformer 5 and a high-voltage distribution device system 6, wherein the first lightning arrester 2 and the second lightning arrester 4 are all 330kV lightning arresters, and GIS equipment is selected according to an actual engineering arrangement scheme.
It can be seen that, by setting the first lightning arrester 2 at a position close to the movable transformer 1, the second lightning arrester 4, the voltage transformer 5 and the high-voltage distribution device system 6 are all set at a position close to the transformer substation, the requirement of rapid power supply switching can be realized, the first lightning arrester 2 and the second lightning arrester 4 are connected through the overhead line, the direct grounding of the line can be prevented, and the line is protected.
In some embodiments, as shown in fig. 1, the first lightning arrester 2 is connected to the high voltage side of the mobile transformer 1, while one end of the overhead line 3 is connected to the first lightning arrester 2, and the other end is connected to the second lightning arrester 4, and the second lightning arrester 4 is connected to the voltage transformer 5 and the high voltage distribution device system 6 in turn, and is connected to the 330kV bus.
The first lightning arrester 2 is arranged at a position close to the movable transformer 1, and the second lightning arrester 4, the voltage transformer 5 and the high-voltage distribution device system 6 are all arranged at a position close to the transformer substation.
In some embodiments, as shown in fig. 1, the medium voltage side of the mobile transformer is connected to the 110kV bus of the terminal station through a third lightning arrester 7 and a medium voltage distribution device system, wherein the third lightning arrester 7 is disposed at a position close to the mobile transformer, and the medium voltage distribution device system is disposed at a position close to the terminal station.
The medium voltage wiring structure comprises a medium voltage arrester 7 and a medium voltage distribution device system 8, wherein the medium voltage arrester 7 is arranged at a position close to the movable transformer 1, the medium voltage distribution device system 8 is arranged at a position close to the terminal station, the medium voltage side of the movable transformer 1 is sequentially connected with the medium voltage arrester 7 and the medium voltage distribution device system 8 and is connected to a 110kV bus, when the medium voltage side equipment is selected, short circuit current is 40kA, rated current is 3150A, GIS equipment is selected according to an actual engineering arrangement scheme, the wiring mode is simple and clear, the operation is convenient, and the expansion is facilitated; and the used electrical equipment is less, and the cost of the power distribution device is low.
In some embodiments, as shown in fig. 1, the low-voltage side of the mobile transformer is connected to the fourth lightning arrester 9 through a copper bar, and is suspended to run.
The low-voltage side of the movable transformer 1 is directly connected with the fourth lightning arrester 9 to run in a suspended mode, low-voltage outgoing lines and reactive equipment are not added, the selection of a low-voltage side distribution device of the movable transformer 1 considers the extreme case that single-phase earth faults cannot be timely removed, and the highest voltage of the low-voltage side pair exceeds the rated voltage of a common 10kV lightning arrester, so that the first-stage voltage level is improved, and the lightning arrester with the rated voltage of 34kV is selected.
Advantageous effects of some embodiments of the present application: by arranging the movable transformer 1, the quick transportation of the main equipment can be realized; the high-voltage side of the movable transformer is connected with the 330kV bus through the high-voltage wiring structure, and the middle-voltage side of the movable transformer is connected with the 110kV bus through the middle-voltage wiring structure, so that the arrangement mode is simplified, the movable transformer can be reused, and the cost is reduced; further, through suspending operation of the low-voltage side of the movable transformer 1, reactive equipment of the low-voltage side of the traditional main transformer is canceled, so that the equipment is reduced in size and convenient to transport, the requirement of rapid power supply switching can be met, and the movable transformer has great significance in improving the safe operation level of a power grid and guaranteeing uninterrupted power supply.
The foregoing description, for purposes of explanation, has been presented in conjunction with specific embodiments. However, the above discussion in some examples is not intended to be exhaustive or to limit the embodiments to the precise forms disclosed above. Many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles and the practical application, to thereby enable others skilled in the art to best utilize the embodiments and various embodiments with various modifications as are suited to the particular use contemplated.
Claims (7)
1. An electrical main wiring structure for 330KV long-distance line transformer group fast switching power supply, characterized in that the main wiring structure comprises:
the high-voltage side of the movable transformer is connected with a 330kV bus through a high-voltage wiring structure, and the high-voltage wiring structure adopts a double-bus double-section wiring mode;
the medium-voltage side of the movable transformer is connected with a 110kV bus through a medium-voltage wiring structure, and the medium-voltage wiring structure adopts a single bus wiring mode;
the low-voltage side of the movable transformer is suspended to run.
2. The 330KV long-distance line transformer fast-switching power supply electric main wiring structure according to claim 1, wherein the movable transformer is disposed on a station inner side of the terminal station outlet frame and is disposed along an outlet direction.
3. The 330KV long-distance line transformer fast-switching power supply electric main wiring structure of claim 1, wherein the high-voltage wiring structure is disposed near one side of the substation.
4. The 330KV long-distance line transformer fast-switching power supply electrical main wiring structure of claim 1, wherein the medium voltage wiring structure is disposed at a side close to the end station.
5. The 330KV long-distance line transformer fast-switching power supply electric main wiring structure according to claim 1, wherein the high-voltage side of the mobile transformer is connected to an overhead line through a first lightning arrester, and is sequentially connected to a second lightning arrester, a voltage transformer and a high-voltage distribution device system through the overhead line, and is connected to a 330KV bus of a transformer substation, the first lightning arrester is disposed at a position close to the mobile transformer, and the second lightning arrester, the voltage transformer and the high-voltage distribution device system are all disposed at a position close to the transformer substation.
6. The 330KV long-distance line-change fast-switching power-supplied electrical main wiring structure according to claim 1, wherein the medium-voltage side of the mobile transformer is connected to the 110KV bus of the terminal station through a third lightning arrester and a medium-voltage distribution device system, the third lightning arrester is disposed at a position close to the mobile transformer, and the medium-voltage distribution device system is disposed at a position close to the terminal station.
7. The 330KV long-distance line transformer group fast power-transferring electric main wiring structure according to claim 1, wherein the low-voltage side of the movable transformer is connected with a fourth lightning arrester through a copper bar and is in suspended operation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222004996.6U CN218897086U (en) | 2022-08-01 | 2022-08-01 | 330KV long-distance line-changing quick power-transferring electric main wiring structure |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222004996.6U CN218897086U (en) | 2022-08-01 | 2022-08-01 | 330KV long-distance line-changing quick power-transferring electric main wiring structure |
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| CN218897086U true CN218897086U (en) | 2023-04-21 |
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| CN202222004996.6U Active CN218897086U (en) | 2022-08-01 | 2022-08-01 | 330KV long-distance line-changing quick power-transferring electric main wiring structure |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN120497911A (en) * | 2025-06-25 | 2025-08-15 | 中国能源建设集团陕西省电力设计院有限公司 | Multi-voltage-domain rapid power conversion and supply system of transformer substation and control method |
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2022
- 2022-08-01 CN CN202222004996.6U patent/CN218897086U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN120497911A (en) * | 2025-06-25 | 2025-08-15 | 中国能源建设集团陕西省电力设计院有限公司 | Multi-voltage-domain rapid power conversion and supply system of transformer substation and control method |
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