CN109904769B - Arrangement structure of 220kV outdoor power distribution device - Google Patents
Arrangement structure of 220kV outdoor power distribution device Download PDFInfo
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- CN109904769B CN109904769B CN201910328248.3A CN201910328248A CN109904769B CN 109904769 B CN109904769 B CN 109904769B CN 201910328248 A CN201910328248 A CN 201910328248A CN 109904769 B CN109904769 B CN 109904769B
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Abstract
The invention discloses an arrangement structure of a 220kV outdoor power distribution device, wherein a transformer substation 220kV adopts double-bus wiring, two groups of buses are arranged adjacently, a circuit breaker is arranged in a single row, is parallel to the buses and is arranged opposite to a current transformer, and all lightning arresters, voltage transformers, bus isolating switches, the current transformers and outgoing line isolating switches are arranged in a row; the first group of buses and the second group of buses are located on the line inlet side of a main transformer, the double-column isolating switch is arranged below the first group of buses, the scissor-type isolating switch is arranged below the second group of buses, the arrester is located on the line inlet side of the main transformer, the circuit breaker is located on the line outlet side of the second group of buses, and the current transformer, the line outlet isolating switch and the voltage transformer are located on the line outlet side of the main transformer. The invention has the beneficial effects that: the scissor type isolating switch is used for replacing a double-column isolating switch, so that the longitudinal width of the power distribution device is reduced, the occupied space is saved, and the investment is saved.
Description
Technical Field
The invention relates to the technical field of electrical equipment, in particular to an arrangement structure of a 220kV outdoor power distribution device.
Background
For a common double-bus 220kV outdoor power distribution device, a common medium-sized arrangement is generally selected. The disconnectors under both sets of busbars of an outdoor power distribution unit also typically employ double column disconnectors. This arrangement results in a relatively large longitudinal width, and the feasibility of use is limited for power plants with tight footprints.
Disclosure of Invention
In order to solve the above problems, an object of the present invention is to provide an arrangement structure of a 220kV outdoor power distribution apparatus, which reduces the longitudinal width of the power distribution apparatus and saves the occupied space.
The invention provides an arrangement structure of a 220kV outdoor power distribution device, wherein a transformer substation 220kV adopts double-bus wiring, two groups of buses are arranged adjacently, a circuit breaker is arranged in a single row, is parallel to the buses and is arranged opposite to a current transformer, and all lightning arresters, voltage transformers, bus isolating switches, the current transformers and outgoing line isolating switches are arranged in a row;
the lightning arrester is positioned on the line inlet side of the main transformer, the circuit breaker is positioned on the line outlet side of the second group of buses, and the current transformer, the line outlet isolating switch and the voltage transformer are positioned on the line outlet side of the main transformer;
an incoming line framework is arranged on the incoming line side of the main transformer, an outgoing line framework is arranged on the outgoing line side of the transformer line, a bus framework is arranged between the incoming line framework and the outgoing line framework, the first group of buses and the second group of buses are fixed on the bus framework, the double-column isolating switch, the scissor-type isolating switch, the voltage transformer, the lightning arrester, the circuit breaker, the current transformer and the outgoing line isolating switch are all fixed on a base, a wave trapper is arranged on the outgoing line framework, and a lightning conductor is led out of the top end of the outgoing line framework (6);
the main transformer interval is: arrester-main transformer incoming line-main transformer;
the spacing between incoming lines is: the main transformer inlet wire-the first group of buses-the second group of buses, wherein single-layer overlines are adopted at the inlet wire intervals;
the outgoing line interval is as follows: the device comprises a first group of buses, a double-column type isolating switch, a second group of buses, a scissor type isolating switch, a circuit breaker, a current transformer, an outgoing line isolating switch, a wave trap and an additional outgoing line;
the voltage transformer interval is: an additional line-voltage transformer.
As a further improvement of the present invention, the first bus bar is horizontally arranged in three phases, the first bus bar is suspended on the bus bar framework through suspension insulators, the second bus bar is horizontally arranged in three phases, and the second bus bar is suspended on the bus bar framework through suspension insulators.
As a further improvement of the present invention, the lead-out wires of the first bus bar are fixed to the post insulators of the double-post isolator, and the lead-out wires of the second bus bar are respectively fixed to the post insulators of the scissors isolator and are respectively connected to the post insulators of the double-post isolator.
As a further improvement of the present invention, the post insulator of the double-post type disconnecting switch and the post insulator of the scissors type disconnecting switch are located on the same plane.
As a further improvement of the invention, the main transformer inlet wire is connected to the top end of the wire inlet framework and is pulled to the wire outlet framework.
As a further improvement of the invention, the outgoing line of the main transformer is connected to the lightning arrester.
As a further improvement of the present invention, the outgoing line of the second bus is connected to a circuit breaker through the scissor type disconnector, the outgoing line of the circuit breaker is connected to a current transformer, the outgoing line of the current transformer is connected to the disconnector, and the outgoing line of the disconnector is connected to an additional outgoing line led out from the outgoing line framework.
As a further improvement of the invention, the outgoing line of the additional line is connected to the voltage transformer.
As a further improvement of the present invention, the outgoing lines of the first bus and the second bus are both copper core aluminum stranded wires.
As a further improvement of the invention, the scissor type isolating switch is GW 16.
The invention has the beneficial effects that:
the scissor type isolating switch has the advantages that the switch operation is closed up and down, two double porcelain columns are horizontally arranged, the occupied space and the lead wire space are large. The scissor-type isolating switch replaces a double-column isolating switch, and the advantage of small longitudinal size of the scissor-type isolating switch is fully utilized, so that more electrical equipment can be arranged below a bus of the power distribution device, the longitudinal width of the power distribution device is reduced, the occupied space is saved, and the investment is saved.
Drawings
Fig. 1 is a schematic diagram of an incoming line interval section of an arrangement structure of a 220kV outdoor power distribution apparatus according to an embodiment of the present invention;
fig. 2 is a schematic cross-sectional view of an outlet interval of an arrangement structure of a 220kV outdoor power distribution apparatus according to an embodiment of the present invention;
fig. 3 is a plan view of an arrangement structure of a 220kV outdoor power distribution apparatus according to an embodiment of the present invention.
In the figure, the position of the upper end of the main shaft,
1. a wire-in architecture; 2. a bus architecture; 3. a double-column type isolator; 4. a scissor-type isolator; 5. leading in a main transformer; 6. an outgoing line framework; 7. a voltage transformer; 8. a lightning arrester; 9. a circuit breaker; 10. a current transformer; 11. an outgoing line isolating switch; 12. an attaching line; 13. a lightning conductor; 14. a wave trap.
Detailed Description
The present invention will be described in further detail below with reference to specific embodiments and with reference to the attached drawings.
As shown in fig. 1 to 3, in the arrangement structure of the 220kV outdoor power distribution apparatus according to the embodiment of the present invention, a transformer substation 220kV employs a double-bus connection, two groups of buses are arranged adjacently, a single-row circuit breaker 9 is arranged in parallel with the buses and is arranged opposite to a current transformer 10, and all of the lightning arresters 8, the voltage transformer 7, the bus disconnecting switches, the current transformer 10, and the outgoing line disconnecting switches 11 are arranged in a row.
The first group of buses and the second group of buses are located on the line inlet side of a main transformer, the double-column isolating switch 3 is arranged below the first group of buses, the scissor-type isolating switch 4 is arranged below the second group of buses, the lightning arrester 8 is located on the line inlet side of the main transformer, the circuit breaker 9 is located on the line outlet side of the second group of buses, and the current transformer 10, the line outlet isolating switch 11 and the voltage transformer 7 are located on the line outlet side of a main transformer circuit.
An incoming line framework 1 is arranged on the incoming line side of a main transformer, an outgoing line framework 6 is arranged on the line appearing side of the transformer, a bus framework 2 is arranged between the incoming line framework 1 and the outgoing line framework 6, a first group of buses and a second group of buses are fixed on the bus framework 2, a double-column isolating switch 3, a scissor isolating switch 4, a voltage transformer 7, a lightning arrester 8, a circuit breaker 9, a current transformer 10 and an outgoing line isolating switch 11 are all fixed on a base, a wave trapper 14 is arranged on the outgoing line framework 6, and a lightning conductor 13 is led out of the top end of the outgoing line framework 6.
The main transformer interval is: the lightning arrester 8-a main transformer incoming line 5-a main transformer;
the spacing between incoming lines is: the main transformer incoming line 5-the first group of bus-the second group of bus, the incoming line interval adopts the single-layer overline;
the outgoing line interval is as follows: the first group of buses, the double-column isolating switch 3, the second group of buses, the scissor-type isolating switch 4, the circuit breaker 9, the current transformer 10, the outgoing line isolating switch 11, the wave trap 14 and the additional outgoing line 12;
the voltage transformer interval is: the additional line 12-the voltage transformer 7.
The first bus is horizontally arranged in three phases, the first bus is hung on the bus framework 2 through a suspension insulator, the second bus is horizontally arranged in three phases, and the second bus is hung on the bus framework 2 through the suspension insulator. The outgoing lines of the first bus bar are fixed on the post insulators of the double-post type disconnecting switch 3, and the outgoing lines of the second bus bar are respectively fixed on the post insulators of the scissor type disconnecting switch 4 and are respectively connected to the post insulators of the double-post type disconnecting switch 3.
Meanwhile, the main transformer incoming line 5 is connected to the top end of the incoming line framework 1 and is pulled to the outgoing line framework 6. The outgoing line of the main transformer is connected to the lightning arrester 8. The outgoing line of the second bus is connected to the breaker 9 through the scissor type disconnecting switch 3, the outgoing line of the breaker 9 is connected to the current transformer 10, the outgoing line of the current transformer 10 is connected to the disconnecting switch 11, the outgoing line of the disconnecting switch 11 is connected to the outgoing line framework 6, and is connected to an additional outgoing line 12 led out from the outgoing line framework 6 through the wave trapper 14 arranged on the outgoing line framework 6. The top end of the outgoing line framework 6 leads out a lightning conductor 13. The outgoing line of the additional line 12 is connected to the voltage transformer 7.
Further, the post insulator of the double-post isolator 3 and the post insulator of the scissor isolator 4 are located on the same plane.
Furthermore, the outgoing lines of the first bus and the second bus are both copper core aluminum stranded wires.
Further, the scissor type disconnecting switch 4 is of a GW16 type.
The length direction of the arrangement structure is unchanged, the total longitudinal width 65m of the original power distribution device is reduced to 58m, the width is reduced by 7m, and the occupied space is saved. In particular, the following engineering examples show that the power distribution equipment in a power plant saves 833 square meters of floor space overall, thus saving considerable investment. For power plants with tight footprints, a 220kV outdoor distribution unit of this configuration is the best option. Replace two post type isolator through scissors formula isolator, make full use of its advantage that longitudinal dimension is little for can arrange more electrical equipment below distribution device's generating line, reduce distribution device's longitudinal width, save occupation of land space, save the investment.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. The arrangement structure of the 220kV outdoor power distribution device is characterized in that a transformer substation 220kV adopts double-bus wiring, two groups of buses are arranged adjacently, a circuit breaker (9) is arranged in a single row, is parallel to the buses and is arranged opposite to a current transformer (10), and all lightning arresters (8), voltage transformers (7), bus isolating switches, the current transformer (10) and outgoing line isolating switches (11) are arranged in a row;
the first group of buses and the second group of buses are positioned on the incoming line side of a main transformer, the double-column type disconnecting switch (3) is arranged below the first group of buses, the scissor type disconnecting switch (4) is arranged below the second group of buses, the lightning arrester (8) is positioned on the incoming line side of the main transformer, the circuit breaker (9) is positioned on the outgoing line side of the second group of buses, and the current transformer (10), the outgoing disconnecting switch (11) and the voltage transformer (7) are positioned on the outgoing line side of a main transformer circuit;
an incoming line framework (1) is arranged on the incoming line side of a main transformer, an outgoing line framework (6) is arranged on the outgoing line side of a transformer line, a bus framework (2) is arranged between the incoming line framework (1) and the outgoing line framework (6), the first group of buses and the second group of buses are fixed on the bus framework (2), the double-column isolating switch (3), the scissor-type isolating switch (4), the voltage transformer (7), the lightning arrester (8), the circuit breaker (9), the current transformer (10) and the outgoing line isolating switch (11) are all fixed on a base, a wave trapper (14) is arranged on the outgoing line framework (6), and a lightning conductor (13) is led out from the top end of the outgoing line framework (6);
the main transformer interval is: arrester (8) -main transformer incoming line (5) -main transformer;
the spacing between incoming lines is: the main transformer incoming line (5) -the first group of buses-the second group of buses, wherein single-layer overlines are adopted at the incoming line interval;
the outgoing line interval is as follows: the device comprises a first group of buses, a double-column isolating switch (3), a second group of buses, a scissor-type isolating switch (4), a circuit breaker (9), a current transformer (10), an outgoing line isolating switch (11), a wave trap (14) and an additional outgoing line (12);
the voltage transformer interval is: attached line (12) -voltage transformer (7).
2. An arrangement according to claim 1, characterized in that the first busbar is arranged horizontally in three phases, the first busbar being suspended from the busbar construction (2) by suspension insulators, the second busbar being arranged horizontally in three phases, the second busbar being suspended from the busbar construction (2) by suspension insulators.
3. Arrangement according to claim 1, characterized in that the outgoing lines of the first busbar are fixed to the post insulators of the double column disconnector (3) and the outgoing lines of the second busbar are fixed to the post insulators of the scissor disconnector (4) and are connected to the post insulators of the double column disconnector (3), respectively.
4. An arrangement according to claim 3, characterized in that the post insulators of the double column disconnector (3) and the scissor disconnector (4) are located on the same plane.
5. An arrangement according to claim 1, characterized in that a main transformer incoming line (5) is connected to the incoming line configuration (1) top-end pull-to-outgoing line configuration (6).
6. The arrangement according to claim 1, characterized in that the outgoing lines of the main transformer are connected to a surge arrester (8).
7. The arrangement according to claim 1, characterized in that the outgoing line of the second busbar is connected to a circuit breaker (9) by means of the scissor disconnector (3), the outgoing line of the circuit breaker (9) being connected to a current transformer (10), the outgoing line of the current transformer (10) being connected to a disconnector (11), the outgoing line of the disconnector (11) being connected to an additional line (12) outgoing from the outgoing line infrastructure (6).
8. An arrangement according to claim 1, characterised in that the outgoing line of the additional line (12) is connected to a voltage transformer (7).
9. The arrangement structure according to claim 1, wherein the outgoing lines of the first and second bus bars are both copper-core aluminum stranded wires.
10. An arrangement according to claim 1, characterized in that the scissor disconnector (4) is of type GW 16.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910328248.3A CN109904769B (en) | 2019-04-23 | 2019-04-23 | Arrangement structure of 220kV outdoor power distribution device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910328248.3A CN109904769B (en) | 2019-04-23 | 2019-04-23 | Arrangement structure of 220kV outdoor power distribution device |
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| CN109904769A CN109904769A (en) | 2019-06-18 |
| CN109904769B true CN109904769B (en) | 2021-01-26 |
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20060117553A (en) * | 2005-05-11 | 2006-11-17 | 이한신 | A hydroelectricity arrangements of the special hightension |
| CN205070173U (en) * | 2015-09-28 | 2016-03-02 | 中国电力工程顾问集团西北电力设计院有限公司 | 750kV open -type distribution device quadrangle structure |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN204045951U (en) * | 2014-08-22 | 2014-12-24 | 中国电力工程顾问集团西北电力设计院 | A kind of arrangement of 220kV power distribution equipment |
| CN204190186U (en) * | 2014-09-18 | 2015-03-04 | 福建省电力勘测设计院 | The compact HGIS three-row power distribution equipment of single tube post framework pattern is entirely combined based on 220kV |
| CN204927819U (en) * | 2015-09-30 | 2015-12-30 | 中国电力工程顾问集团西北电力设计院有限公司 | Adopt four angle scheme's 750kV HGIS arrangement structure |
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2019
- 2019-04-23 CN CN201910328248.3A patent/CN109904769B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20060117553A (en) * | 2005-05-11 | 2006-11-17 | 이한신 | A hydroelectricity arrangements of the special hightension |
| CN205070173U (en) * | 2015-09-28 | 2016-03-02 | 中国电力工程顾问集团西北电力设计院有限公司 | 750kV open -type distribution device quadrangle structure |
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| CN109904769A (en) | 2019-06-18 |
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