CN109066320B - HGIS equipment applied to double-bus outgoing line - Google Patents
HGIS equipment applied to double-bus outgoing line Download PDFInfo
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- CN109066320B CN109066320B CN201810990631.0A CN201810990631A CN109066320B CN 109066320 B CN109066320 B CN 109066320B CN 201810990631 A CN201810990631 A CN 201810990631A CN 109066320 B CN109066320 B CN 109066320B
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- 238000010276 construction Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
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- 239000012212 insulator Substances 0.000 description 1
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Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
- H02B1/00—Frameworks, boards, panels, desks, casings; Details of substations or switching arrangements
- H02B1/20—Bus-bar or other wiring layouts, e.g. in cubicles, in switchyards
- H02B1/22—Layouts for duplicate bus-bar selection
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Gas-Insulated Switchgears (AREA)
Abstract
The invention discloses HGIS equipment applied to double-bus outgoing lines; the technical problems to be solved are as follows: the technical problems that in the process of adopting HGIS equipment in the existing transformer substation, a tubular bus is adopted, a circuit breaker double-row arrangement mode is adopted to meet the safety distance requirement of main bus operation and overhaul, the occupied area of the transformer substation is large, the engineering cost is high, and the technical and economic indexes of the transformer substation are unreasonable are solved. The technical scheme is as follows: the HGIS equipment applied to double bus outgoing lines comprises a 1M bus sleeve, a 2M bus sleeve, a GIL air pipe, a #1 outgoing line built-in HGIS equipment, a #2 outgoing line built-in HGIS equipment, a #1 outgoing line sleeve and a #2 outgoing line sleeve. The two wire-spacing built-in HGIS devices share a set of bus bushings. The device has the advantages that the device is suitable for further development of a power grid, fully utilizes limited land resources, and reduces the occupied area of a transformer substation; the size of the equipment is optimized, the number of the sleeves is reduced, the engineering investment is reduced, and the safe and reliable operation of the power grid is met.
Description
Technical Field
The invention designs HGIS equipment applied to double-bus outgoing lines, and belongs to the field of power equipment; the utility model relates to a tubular busbar and main equipment of transformer substation, specifically is 2 interval equipment of biserial outgoing line, and a set of busbar sleeve is shared to built-in HGIS equipment of 2 interval of being qualified for next round of competitions.
Background
With the continuous improvement of the power manufacturing level of miniaturized power equipment, more and more substations adopt HGIS equipment to reduce the occupation area of the substations. The HGIS equipment needs to adopt external tubular busbar, adopts double bus, and the longitudinal dimension of transformer substation is great relatively when the biserial circuit breaker is arranged.
Disclosure of Invention
The technical problems to be solved by the invention are as follows: the technical problems that in the process of adopting HGIS equipment in the existing transformer substation, a tubular bus is adopted, a circuit breaker double-row arrangement mode is adopted to meet the safety distance requirement of main bus operation and overhaul, the occupied area of the transformer substation is large, the engineering cost is high, and the technical and economic indexes of the transformer substation are unreasonable are solved.
The invention aims to provide HGIS equipment applied to double-bus outgoing lines, optimize the planar arrangement pattern of a transformer substation, compress the occupied area of the transformer substation, reduce the number of outgoing line sleeves of the HGIS equipment and realize the optimal technical and economic indexes of the transformer substation.
In order to solve the technical problems, the invention adopts the following technical scheme:
the utility model provides an HGIS equipment that is applied to two generating line and is qualified for next round of competitions, including #1 play line sleeve pipe, 1M generating line sleeve pipe, #1 is qualified for next round of competitions and is built-in HGIS equipment, #2 play line sleeve pipe, 2M generating line sleeve pipe and #2 are qualified for next round of competitions and are built-in HGIS equipment, #1 play line sleeve pipe, 1M generating line sleeve pipe, #2 play line sleeve pipe and 2M generating line sleeve pipe are all fixed on the scene through the equipment support, connect #1 between 1 play line sleeve pipe and the 1M generating line sleeve pipe and be qualified for next round of competitions and build-in HGIS equipment, #2 play line between #2 play line sleeve pipe and the 2M generating line sleeve pipe, connect through GIL trachea between 1M generating line sleeve pipe and the 2M generating line sleeve pipe;
the #1 wire outlet sleeve and the #2 wire outlet sleeve are respectively composed of an A-phase wire outlet sleeve, a B-phase wire outlet sleeve and a C-phase wire outlet sleeve,
the 1M bus sleeve and the 2M bus sleeve are respectively composed of an A-phase bus sleeve, a B-phase bus sleeve and a C-phase bus sleeve,
the #1 wire-outlet built-in HGIS device and the #2 wire-outlet built-in HGIS device are composed of an A-phase wire-outlet built-in HGIS device, a B-wire-outlet built-in HGIS device and a C-wire-outlet built-in HGIS device,
a first GIL branch air pipe and a second GIL branch air pipe are arranged between the A-phase bus sleeve in the 1M bus sleeve and the A-phase bus sleeve in the 2M bus sleeve, one end of the first GIL branch air pipe is connected with the A-phase bus sleeve in the 2M bus sleeve, and the other end of the first GIL branch air pipe is connected between the A-phase bus sleeve in the 1M bus sleeve and the A-phase outlet built-in HGIS equipment in the #1 outlet built-in HGIS equipment; one end of the second GIL branch air pipe is connected with an A-phase bus sleeve in the 1M bus sleeve, and the other end of the second GIL branch air pipe is connected between the A-phase bus sleeve in the 2M bus sleeve and an A-phase outlet built-in HGIS device in the #2 outlet built-in HGIS device;
a third GIL branch air pipe and a fourth GIL branch air pipe are arranged between the B-phase bus sleeve in the 1M bus sleeve and the B-phase bus sleeve in the 2M bus sleeve, one end of the third GIL branch air pipe is connected with the B-phase bus sleeve in the 2M bus sleeve, and the other end of the third GIL branch air pipe is connected between the B-phase bus sleeve in the 1M bus sleeve and the B-phase outlet built-in HGIS equipment in the #1 outlet built-in HGIS equipment; one end of the fourth GIL branch air pipe is connected with a B-phase bus sleeve in the 1M bus sleeve, and the other end of the fourth GIL branch air pipe is connected between the B-phase bus sleeve in the 2M bus sleeve and a B-phase outlet built-in HGIS device in the #2 outlet built-in HGIS device;
a fifth GIL branch air pipe and a sixth GIL branch air pipe are arranged between the C-phase bus sleeve in the 1M bus sleeve and the C-phase bus sleeve in the 2M bus sleeve, one end of the fifth GIL branch air pipe is connected with the C-phase bus sleeve in the 2M bus sleeve, and the other end of the fifth GIL branch air pipe is connected between the C-phase bus sleeve in the 1M bus sleeve and the C-phase outlet built-in HGIS equipment in the #1 outlet built-in HGIS equipment; one end of the sixth GIL branch air pipe is connected with a C-phase bus sleeve in the 1M bus sleeve, and the other end of the sixth GIL branch air pipe is connected between the C-phase bus sleeve in the 2M bus sleeve and the C-phase outlet built-in HGIS equipment in the #2 outlet built-in HGIS equipment.
According to the technical scheme, through the characteristics of the random leading-in sleeve of the GIL air pipe, the built-in HGIS equipment on two sides of the bus is connected, the bus and the outgoing sleeve are arranged according to the need on the basis of not changing the wiring principle of the double buses, and finally the four groups of the HGIS sleeves are arranged according to the arrangement mode of outgoing lines, bus outgoing lines and outgoing lines. Wherein each interval wire outlet sleeve and the bus sleeve form a C shape, and two wire outlets are spaced to form a double C shape.
According to the technical scheme, the two outlet spaces share the same bus sleeve, so that the number of the bus sleeves is reduced, the distances between the bus sleeves with different outlet spaces are reduced, and the investment and the longitudinal size of the transformer substation are saved.
Preferably, the a-phase outgoing line built-in HGIS equipment, the B-phase outgoing line built-in HGIS equipment and the C-phase outgoing line built-in HGIS equipment all comprise a 1M bus side disconnecting switch, a 2M bus side disconnecting switch, a circuit breaker, a current transformer, an outgoing line side disconnecting switch and a voltage transformer, wherein the input end of the 1M bus side disconnecting switch is connected with a bus sleeve, the output end of the 1M bus side disconnecting switch is connected with the output end of the 2M bus side disconnecting switch and the circuit breaker, the output end of the 2M bus side disconnecting switch is connected with the circuit breaker, the circuit breaker is connected with the current transformer, the current transformer is connected with the outgoing line side disconnecting switch, and the outgoing line side disconnecting switch is connected with the outgoing line sleeve and the voltage transformer.
Compared with the prior art, the invention has the beneficial effects that:
1. the equipment disclosed by the invention is suitable for further development of a power grid, fully utilizes limited land resources and reduces the occupied area of a transformer substation.
2. The equipment provided by the invention optimizes the equipment size, reduces the number of the sleeve and the post insulators, and reduces engineering investment.
3. The equipment provided by the invention correspondingly reduces the number of bus sleeves of the HGIS equipment, reduces the workload of field test, debugging and the like, and can meet the time node requirements of engineering construction.
4. The device is applied to a double-bus wiring mode, and meets the reliability and safety of power grid operation.
Drawings
Fig. 1 is a schematic diagram of the wiring of the apparatus of the present invention.
Fig. 2 is a plan view of the apparatus of the present invention.
Fig. 3 is a sectional layout of the apparatus of the present invention.
FIG. 4 is a cross-sectional layout of a 220kV HGIS apparatus in an embodiment.
Detailed Description
The technical scheme of the present invention is described in detail below, but the scope of the present invention is not limited to the embodiments.
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be further described in detail with reference to the accompanying drawings 1 to 4 and examples. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the invention.
Examples:
the present embodiment further illustrates the present invention by taking an application to 220kVHGIS equipment as an example.
As shown in fig. 2, the HGIS device applied to dual bus outgoing lines in the present embodiment includes a #1 outgoing line sleeve 7, a 1M bus sleeve 8, a #1 outgoing line built-in HGIS device 9, a #2 outgoing line sleeve 10, a 2M bus sleeve 11, and a #2 outgoing line built-in HGIS device 12, where the #1 outgoing line sleeve 7, the 1M bus sleeve 8, the #2 outgoing line sleeve 10, and the 2M bus sleeve 11 are all fixed on the site by device brackets, the #1 outgoing line sleeve 7 and the 1M bus sleeve 8 are connected with the #1 outgoing line built-in HGIS device 9, and the #2 outgoing line sleeve 10 and the 2M bus sleeve 11 are connected with the #2 outgoing line built-in HGIS device 12,1M via a GIL gas pipe between the bus sleeve 8 and the 2M bus sleeve 11. Through the characteristics of the random guiding sleeve of the GIL air pipe, the built-in HGIS equipment on two sides of the bus is connected, the bus and the wire outlet sleeve are arranged according to the requirement on the basis of not changing the wiring principle of the double buses, and finally the four groups of the HGIS sleeves are arranged according to the arrangement mode of wire outlet-bus-wire outlet.
As shown in fig. 2, the #1 wire outlet bushings 7 and the #2 wire outlet bushings 10 are each composed of an a-phase wire outlet bushing, a B-phase wire outlet bushing, and a C-phase wire outlet bushing, the 1M bus bar bushings 8 and the 2M bus bar bushings 11 are each composed of an a-phase bus bar bushing, a B-phase bus bar bushing, and a C-phase bus bar bushing, and the #1 wire outlet built-in HGIS device 9 and the #2 wire outlet built-in HGIS device 12 are each composed of an a-phase wire outlet built-in HGIS device, a B-wire outlet built-in HGIS device, and a C-wire outlet built-in HGIS device.
As shown in fig. 4, the a-phase outgoing line built-in HGIS device, the B-phase outgoing line built-in HGIS device, and the C-phase outgoing line built-in HGIS device in this embodiment each include a 1M bus-bar side disconnector 1, a 2M bus-bar side disconnector 2, a circuit breaker 3, a current transformer 4, an outgoing line side disconnector 5, and an input end of the voltage transformer 6,1M bus-bar side disconnector 1 are connected to a bus sleeve, an output end of the 1M bus-bar side disconnector 1 is connected to an output end of the 2M bus-bar side disconnector 2 and an output end of the circuit breaker 3,2M bus-bar side disconnector 2 are connected to the circuit breaker 3, the circuit breaker 3 is connected to the current transformer 4, the current transformer 4 is connected to the outgoing line side disconnector 5, and the outgoing line side disconnector 5 is connected to the outgoing line sleeve and the voltage transformer 6.
As shown in fig. 3, the outlet bushings of each outlet interval form a "C-shape" with the bus bar bushing, and the two outlet intervals form a double "C-shape".
As shown in fig. 2, a first GIL branch air pipe 13 and a second GIL branch air pipe 14 are arranged between an a-phase bus sleeve in the 1M bus sleeve 8 and an a-phase bus sleeve in the 2M bus sleeve 11, one end of the first GIL branch air pipe 13 is connected with the a-phase bus sleeve in the 2M bus sleeve, and the other end of the first GIL branch air pipe 13 is connected between the a-phase bus sleeve in the 1M bus sleeve 8 and an a-phase wire built-in HGIS device in the #1 wire outlet built-in HGIS device 9; one end of the second GIL branch air pipe 14 is connected with an A-phase bus sleeve in the 1M bus sleeve, and the other end of the second GIL branch air pipe 14 is connected between the A-phase bus sleeve in the 2M bus sleeve 11 and the A-phase outlet built-in HGIS equipment in the #2 outlet built-in HGIS equipment 12.
As shown in fig. 2, a third GIL branch air pipe 15 and a fourth GIL branch air pipe 16 are arranged between the B-phase bus sleeve in the 1M bus sleeve 8 and the B-phase bus sleeve in the 2M bus sleeve 11, one end of the third GIL branch air pipe 15 is connected with the B-phase bus sleeve in the 2M bus sleeve 11, and the other end of the third GIL branch air pipe 15 is connected between the B-phase bus sleeve in the 1M bus sleeve 8 and the B-phase wire built-in HGIS equipment in the #1 wire outlet built-in HGIS equipment 9; one end of the fourth GIL branch air pipe 16 is connected with a B-phase bus sleeve in the 1M bus sleeve, and the other end of the fourth GIL branch air pipe 16 is connected between the B-phase bus sleeve in the 2M bus sleeve 11 and the B-phase outlet built-in HGIS device in the #2 outlet built-in HGIS device 12.
As shown in fig. 2, a fifth GIL branch air pipe 17 and a sixth GIL branch air pipe 18 are arranged between the C-phase bus sleeve in the 1M bus sleeve 8 and the C-phase bus sleeve in the 2M bus sleeve 11, one end of the fifth GIL branch air pipe 17 is connected with the C-phase bus sleeve in the 2M bus sleeve 11, and the other end of the fifth GIL branch air pipe 17 is connected between the C-phase bus sleeve in the 1M bus sleeve 8 and the C-phase wire built-in HGIS equipment in the #1 wire outlet built-in HGIS equipment 9; one end of the sixth GIL branch air pipe 18 is connected with a C-phase bus sleeve in the 1M bus sleeve, and the other end of the sixth GIL branch air pipe 18 is connected between the C-phase bus sleeve in the 2M bus sleeve 11 and the C-phase outlet built-in HGIS equipment in the #2 outlet built-in HGIS equipment 12.
As shown in fig. 4, the two wire-spacing built-in HGIS devices in this embodiment share a set of bus bar bushings. The interval of each group of wires is reduced by 3 bus bushings, and the whole equipment is reduced by 6 bus bushings.
The HGIS equipment of the embodiment shares the same group of bus sleeves with double bus wiring types and double outlet intervals; the problem of when two generating lines are wired, the interval of being qualified for the next round of competitions sets up the busbar sleeve respectively, and the floor area is big, is difficult to compress transformer substation longitudinal dimension is solved. The bus sleeve is shared by the double circuit breakers at intervals, so that the distance between the different outlet interval sleeves is reduced, and the longitudinal dimension of the transformer substation is saved.
The HGIS equipment adapts to the further development of the power grid, fully utilizes the limited land resources, and reduces the occupied area of the transformer substation; the equipment size is optimized, the number of the sleeves is reduced, and the engineering investment is reduced; the corresponding workload of field test, debugging and the like is reduced, the time node requirement of engineering construction can be met, and the reliability and safety of power grid operation are met.
As described above, although the present invention has been shown and described with reference to certain preferred embodiments, it is not to be construed as limiting the invention itself. Various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (2)
1. The HGIS equipment applied to double bus wire outgoing is characterized by comprising a #1 wire outgoing sleeve (7), a 1M bus wire sleeve (8), a #1 wire outgoing built-in HGIS equipment (9), a #2 wire outgoing sleeve (10), a 2M bus wire sleeve (11) and a #2 wire outgoing built-in HGIS equipment (12), wherein the #1 wire sleeve (7), the 1M bus wire sleeve (8), the #2 wire sleeve (10) and the 2M bus wire sleeve (11) are all fixed on the ground through equipment brackets, the #1 wire outgoing built-in HGIS equipment (9) is connected between the #1 wire sleeve (7) and the 1M bus wire sleeve (8), the #2 wire outgoing built-in HGIS equipment (12) is connected between the #2 wire sleeve (10) and the 2M bus wire sleeve (11), and the 1M bus wire sleeve (8) and the 2M bus wire sleeve (11) are connected through GIL air pipes;
the #1 wire outlet sleeve (7) and the #2 wire outlet sleeve (10) are respectively composed of an A-phase wire outlet sleeve, a B-phase wire outlet sleeve and a C-phase wire outlet sleeve,
the 1M bus sleeve (8) and the 2M bus sleeve (11) are respectively composed of an A-phase bus sleeve, a B-phase bus sleeve and a C-phase bus sleeve,
the #1 wire-outlet built-in HGIS device (9) and the #2 wire-outlet built-in HGIS device (12) are composed of an A wire-outlet built-in HGIS device, a B wire-outlet built-in HGIS device and a C wire-outlet built-in HGIS device,
a first GIL branch air pipe (13) and a second GIL branch air pipe (14) are arranged between an A-phase bus sleeve in the 1M bus sleeve (8) and an A-phase bus sleeve in the 2M bus sleeve (11), one end of the first GIL branch air pipe (13) is connected with the A-phase bus sleeve in the 2M bus sleeve, and the other end of the first GIL branch air pipe (13) is connected between the A-phase bus sleeve in the 1M bus sleeve (8) and an A-phase outlet built-in HGIS device in the #1 outlet built-in HGIS device (9); one end of the second GIL branch air pipe (14) is connected with an A-phase bus sleeve in the 1M bus sleeve, and the other end of the second GIL branch air pipe (14) is connected between the A-phase bus sleeve in the 2M bus sleeve (11) and an A-phase outlet built-in HGIS device in the #2 outlet built-in HGIS device (12);
a third GIL branch air pipe (15) and a fourth GIL branch air pipe (16) are arranged between the B-phase bus sleeve in the 1M bus sleeve (8) and the B-phase bus sleeve in the 2M bus sleeve (11), one end of the third GIL branch air pipe (15) is connected with the B-phase bus sleeve in the 2M bus sleeve (11), and the other end of the third GIL branch air pipe (15) is connected between the B-phase bus sleeve in the 1M bus sleeve (8) and the B-phase wire built-in HGIS equipment in the #1 wire outlet built-in HGIS equipment (9); one end of the fourth GIL branch air pipe (16) is connected with a B-phase bus sleeve in the 1M bus sleeve, and the other end of the fourth GIL branch air pipe (16) is connected between the B-phase bus sleeve in the 2M bus sleeve (11) and a B-phase outlet built-in HGIS device in the #2 outlet built-in HGIS device (12);
a fifth GIL branch air pipe (17) and a sixth GIL branch air pipe (18) are arranged between the C-phase bus sleeve in the 1M bus sleeve (8) and the C-phase bus sleeve in the 2M bus sleeve (11), one end of the fifth GIL branch air pipe (17) is connected with the C-phase bus sleeve in the 2M bus sleeve (11), and the other end of the fifth GIL branch air pipe (17) is connected between the C-phase bus sleeve in the 1M bus sleeve (8) and the C-phase wire built-in HGIS equipment in the #1 wire outlet built-in HGIS equipment (9); one end of the sixth GIL branch air pipe (18) is connected with a C-phase bus sleeve in the 1M bus sleeve, and the other end of the sixth GIL branch air pipe (18) is connected between the C-phase bus sleeve in the 2M bus sleeve (11) and a C-phase outlet built-in HGIS device in the #2 outlet built-in HGIS device (12).
2. The HGIS equipment applied to double bus outgoing line according to claim 1, wherein the a-phase outgoing line built-in HGIS equipment, the B-phase outgoing line built-in HGIS equipment and the C-phase outgoing line built-in HGIS equipment each include a 1M bus side disconnecting switch (1), a 2M bus side disconnecting switch (2), a circuit breaker (3), a current transformer (4), an outgoing line side disconnecting switch (5) and a voltage transformer (6), an input end of the 1M bus side disconnecting switch (1) is connected with a bus bushing, an output end of the 1M bus side disconnecting switch (1) is connected with an output end of the 2M bus side disconnecting switch (2) and the circuit breaker (3), an output end of the 2M bus side disconnecting switch (2) is connected with the circuit breaker (3) is connected with the current transformer (4), the current transformer (4) is connected with the outgoing line side disconnecting switch (5), and the outgoing line side disconnecting switch (5) is connected with the bus bushing and the voltage transformer (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810990631.0A CN109066320B (en) | 2018-08-28 | 2018-08-28 | HGIS equipment applied to double-bus outgoing line |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810990631.0A CN109066320B (en) | 2018-08-28 | 2018-08-28 | HGIS equipment applied to double-bus outgoing line |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109066320A CN109066320A (en) | 2018-12-21 |
| CN109066320B true CN109066320B (en) | 2023-12-12 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810990631.0A Active CN109066320B (en) | 2018-08-28 | 2018-08-28 | HGIS equipment applied to double-bus outgoing line |
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| CN (1) | CN109066320B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109510066A (en) * | 2018-12-27 | 2019-03-22 | 中国能源建设集团浙江省电力设计院有限公司 | A kind of 220kV double space modular HGIS electric wiring device |
| CN113659482A (en) * | 2021-08-10 | 2021-11-16 | 中国电建集团河北省电力勘测设计研究院有限公司 | 220KV HGIS power distribution device |
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|---|---|---|---|---|
| EP1580856A1 (en) * | 2004-03-25 | 2005-09-28 | ABB Technology AG | High voltage switchgear in AIS configuration |
| CN206685710U (en) * | 2017-04-25 | 2017-11-28 | 江苏科能电力工程咨询有限公司 | A kind of new distribution device applied to severe cold area transformer station |
| CN207218016U (en) * | 2017-07-24 | 2018-04-10 | 青海省电力设计院 | A kind of 330kVHGIS double-bus double-row type power distribution equipment |
| CN208738619U (en) * | 2018-08-28 | 2019-04-12 | 江苏科能电力工程咨询有限公司 | HGIS equipment applied to double-bus outlet |
-
2018
- 2018-08-28 CN CN201810990631.0A patent/CN109066320B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1580856A1 (en) * | 2004-03-25 | 2005-09-28 | ABB Technology AG | High voltage switchgear in AIS configuration |
| CN206685710U (en) * | 2017-04-25 | 2017-11-28 | 江苏科能电力工程咨询有限公司 | A kind of new distribution device applied to severe cold area transformer station |
| CN207218016U (en) * | 2017-07-24 | 2018-04-10 | 青海省电力设计院 | A kind of 330kVHGIS double-bus double-row type power distribution equipment |
| CN208738619U (en) * | 2018-08-28 | 2019-04-12 | 江苏科能电力工程咨询有限公司 | HGIS equipment applied to double-bus outlet |
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| CN109066320A (en) | 2018-12-21 |
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