CN111987596A - C-type arrangement main transformer incoming line structure of 330kV HGIS equipment - Google Patents
C-type arrangement main transformer incoming line structure of 330kV HGIS equipment Download PDFInfo
- Publication number
- CN111987596A CN111987596A CN202010976238.3A CN202010976238A CN111987596A CN 111987596 A CN111987596 A CN 111987596A CN 202010976238 A CN202010976238 A CN 202010976238A CN 111987596 A CN111987596 A CN 111987596A
- Authority
- CN
- China
- Prior art keywords
- bus
- main transformer
- circuit breaker
- adjacent
- sleeve
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Classifications
-
- 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
- H02B1/24—Circuit arrangements for boards or switchyards
-
- 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
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
- H02B5/00—Non-enclosed substations; Substations with enclosed and non-enclosed equipment
- H02B5/06—Non-enclosed substations; Substations with enclosed and non-enclosed equipment gas-insulated
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J3/00—Circuit arrangements for ac mains or ac distribution networks
- H02J3/007—Arrangements for selectively connecting the load or loads to one or several among a plurality of power lines or power sources
- H02J3/0073—Arrangements for selectively connecting the load or loads to one or several among a plurality of power lines or power sources for providing alternative feeding paths between load and source when the main path fails, e.g. transformers, busbars
Abstract
A330 kV HGIS equipment 'C' type arranges the main transformer and enters the wire structure, an incoming and outgoing line interval includes I mother side circuit breaker, II mother side circuit breakers, middle circuit breaker, bus side bushing, II mother incoming line side bushing of main transformer, adjacent interval bushing and adjacent interval overline of outgoing line of bushing and adjacent interval; the first bus side circuit breaker is connected with the first bus through a bus side sleeve, and the second bus side circuit breaker is connected with the second bus through a bus side sleeve; i, connecting a female side circuit breaker with adjacent spaced overlines through adjacent spaced sleeves for outgoing lines, and outgoing lines through the adjacent spaced overlines; the circuit breaker at the side of the second female is connected with a main transformer inlet wire through a main transformer II female inlet wire side sleeve; two ends of the middle circuit breaker are respectively connected with the wiring between the II female side circuit breaker and the II female incoming line side sleeves of the main transformer and between the I female side circuit breaker and the adjacent outgoing line spacing sleeves through wires. The invention realizes the connection between the 3 rd main transformer and the II bus without increasing floor area and circuit breaker.
Description
Technical Field
The invention belongs to the field of ultrahigh voltage power transmission and transformation, and particularly relates to a C-shaped arrangement main transformer incoming line structure of 330kV HGIS equipment.
Background
With the high-speed development of power grid construction, the scale of ultrahigh voltage substation engineering is larger and larger, the problem of large occupied area due to the arrangement of conventional power distribution devices is more and more prominent, land backup resources are seriously insufficient, the land acquisition and removal cost of a station site is increased day by day, particularly in some urban central areas, the land acquisition cost is obviously increased, the station site selection of a substation is more and more difficult, and the problem that power grid construction must face is to improve the resource utilization rate of the land. The existing 330kV HGIS equipment C-shaped arrangement is an arrangement form of leading out wires in the same direction of an upper layer and a lower layer at intervals, the arrangement form is a common arrangement form in recent engineering, the arrangement form effectively reduces the phenomenon that the leading-out wires of the conventional HGIS equipment 2 occupy 2 intervals, and the arrangement form can be a mode of leading out wires at intervals of 2 in a solid line. However, the general main transformer incoming line and outgoing line are arranged on two sides of the HGIS equipment, the main transformer incoming line can only enter the I bus close to the main transformer side through the HGIS circuit breaker, for the transformer station with the transformer substation main transformer scale exceeding 3 main transformers, the 1 st and 2 nd main transformers directly enter the line from one side of the HGIS equipment, and are connected with the I bus close to the main transformer side through the I bus side circuit breaker. In order to ensure the operation reliability of the 330kV power distribution device, an operation and maintenance unit requires that a 3 rd main transformer enters a II bus far away from the main transformer side through a circuit breaker at the II main side of HGIS equipment, so that when any transformer fails, the 330kV bus can be ensured not to lose power due to the transformer failure. Therefore, the 3 rd main transformer and the II bus need to be connected without changing the C-shaped arrangement mode of the 330kV HGIS equipment.
Disclosure of Invention
The invention aims to solve the problem of large occupied area in a C-shaped arrangement mode of 330kV HGIS equipment in the prior art, and provides a C-shaped arrangement main transformer incoming line structure of the 330kV HGIS equipment, so that the C-shaped arrangement running reliability of the 330kV distribution device HGIS equipment is improved, meanwhile, the 3 rd main transformer is connected with a II bus under the condition that the occupied area is not increased and circuit breakers are not increased too much, and the problems of difficulty in land acquisition due to the occupied area, high equipment cost and the like in engineering are reduced.
In order to achieve the purpose, the invention has the following technical scheme:
a330 kV HGIS equipment "C" type arranges main transformer inlet wire structure, an business turn over line interval includes:
the circuit breaker comprises a first bus side circuit breaker, a second bus side circuit breaker, a middle circuit breaker, a bus side sleeve, a main transformer and a second bus inlet side sleeve, outlet adjacent spaced sleeves and adjacent spaced overlines; the I bus side circuit breaker is connected with the I bus through a bus side sleeve, and the II bus side circuit breaker is connected with the II bus through another bus side sleeve; the I female side circuit breaker is connected with adjacent spaced overlines through adjacent spaced sleeves for outgoing lines, and outgoing lines are conducted through the adjacent spaced overlines; the breaker at the side of the II bus is connected with a main transformer incoming line through a main transformer II bus incoming line side sleeve; two ends of the middle circuit breaker are respectively connected with the wiring between the II female side circuit breaker and II female incoming line side sleeves of the main transformer and between the I female side circuit breaker and the adjacent outgoing line spacing sleeves through wires.
Preferably, an HGIS outlet wire of a main transformer distribution string is led into a 330kV relay room building interval which is adjacently arranged through an HGIS pipeline bus, and the 330kV relay room building interval is free of HGIS equipment due to arrangement of the 330kV relay room building.
Preferably, the HGIS pipeline bus is led into a 330kV relay room building interval, an interval sleeve adjacent to an outgoing line of a main transformer distribution string is arranged in the interval, and the position of the interval sleeve adjacent to the outgoing line is in the same central line with other sleeves for separating high-rise outgoing lines.
Preferably, the adjacent spaced overlines are arranged above the 330kV relay room building spacing.
Preferably, the main transformer incoming line is connected to the other side of the HGIS equipment through adjacent spaced overlines, is connected with the adjacent spaced sleeves of the outgoing line through the suspension string leading-down, and the adjacent spaced sleeves of the outgoing line are connected with the II bus through the circuit breaker on the side of the II bus.
Preferably, A, B, C three phases of the I bus and the II bus are vertically arranged and are connected with adjacent spacing sleeves of the outgoing line.
Preferably, for a transformer substation with 3 main transformers, the 1 st and 2 nd main transformers are led in from one side of HGIS equipment and are connected with the I bus close to the main transformer side through the I bus side circuit breaker, and the 3 rd main transformer enters the II bus far away from the main transformer side through the II bus side circuit breaker.
Compared with the prior art, the invention has the following beneficial effects: firstly, a main transformer is not connected with a bus II, and redundant space is increased; secondly, the number of circuit breakers is increased because a main transformer is not connected with a bus II; finally, the 330kV relay chamber interval overline can be fully arranged by utilizing the inverse interval of the HGIS pipeline bus without changing the C-shaped arrangement of the original HGIS equipment, the 3 rd main transformer and the II bus far away from the main transformer side are connected, and the operation reliability of the 330kV power distribution device is ensured. In conclusion, the C-shaped arrangement main transformer incoming line structure of the 330kV HGIS equipment does not change the C-shaped arrangement mode of the 330kV HGIS equipment, and the connection between the 3 rd main transformer and the II bus can be realized under the condition of not increasing redundant space and redundant circuit breakers by changing the arrangement modes of the 330kV HGIS pipeline bus, the sleeve and the cross-line, so that the 3 rd main transformer required by an operation and maintenance unit enters the II bus far away from the main transformer side through the circuit breaker on the II bus side of the HGIS equipment, and therefore when any transformer fails, the 330kV bus can be ensured not to lose power due to the transformer failure, and the reliable operation of the 330kV outgoing line is ensured.
Drawings
FIG. 1 is a schematic diagram of bus connection of a main transformer entering II in a C-shaped arrangement of 330kV HGIS equipment;
FIG. 2 is a plan view of a space between a main transformer entering II bus in a C-shaped arrangement of 330kV HGIS equipment;
FIG. 3 is a sectional view of a gap between a main transformer entering II bus in a C-shaped arrangement of 330kV HGIS equipment;
FIG. 4 is a sectional view of the 330kV HGIS equipment with the arrangement of the interval outgoing lines in the C-shaped arrangement and the pouring of the interval outgoing lines into the adjacent interval outgoing lines;
FIG. 5 is a sectional view of an adjacent space for introducing an HGIS pipeline bus of 330kV HGIS equipment;
in the drawings: 1-I female side circuit breaker; 2-II female side circuit breakers; 3-medium circuit breaker; 4-busbar side bushing; 5-main transformer II bus inlet side sleeve; 6-adjacent spaced sleeves for outgoing lines; 7-adjacent spaced flying leads.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
Referring to fig. 1, the invention provides an incoming line mode suitable for a 330kV HGIS equipment 'C' -shaped arrangement main transformer to enter a ii bus, and connection between the main transformer and the ii bus far away from the main transformer side is realized by changing 330kV HGIS pipeline bus, sleeve arrangement, and overline setting. Taking the space between the main transformer and the II buses for entering into the inlet and outlet lines in the C-shaped arrangement of the 330kV HGIS equipment as an example, the space comprises a first bus side circuit breaker 1, a second bus side circuit breaker 2, an interrupt circuit 3, a bus side sleeve 4, a main transformer II bus inlet side sleeve 5, an outlet adjacent spacing sleeve 6 and an adjacent spacing overline 7. The first bus side circuit breaker 1 is connected with the first bus through a bus side sleeve 4, and the second bus side circuit breaker 2 is connected with the second bus through another bus side sleeve 4; i, a female side circuit breaker 1 is connected with adjacent spaced overlines 7 through adjacent spaced sleeves 6 for outgoing lines, and outgoing lines are conducted through the adjacent spaced overlines 7; the II-female side circuit breaker 2 is connected with a main transformer incoming line through a main transformer II-female incoming line side sleeve 5; two ends of the middle circuit breaker 3 are respectively connected between the II female side circuit breaker 2 and the II female incoming line side sleeve 5 of the main transformer and between the I female side circuit breaker 1 and the adjacent outgoing line spacing sleeve 6 through wires.
Referring to fig. 2-5, the HGIS outgoing line matched with the main transformer in series is led into a 330kV relay room building interval arranged adjacently through an HGIS pipeline bus, and the 330kV relay room building interval does not have HGIS equipment due to arrangement of the 330kV relay room building. The HGIS pipeline bus is led into a 330kV relay room building interval, the interval sleeve 6 adjacent to the outgoing line of the main transformer distribution string is arranged at the interval, the arrangement position of the interval sleeve 6 adjacent to the outgoing line is in the same central line with the sleeves of other interval high-rise outgoing lines, so that the arrangement of the interval building cannot be influenced, a span line is arranged above the interval building, the sleeves are connected with the span line, and the 330kV outgoing line of the main transformer distribution string is realized through the span line.
The main transformer incoming line is connected to the other side of the HGIS equipment through an adjacent spaced crossover 7, and is connected with an outgoing line adjacent spaced sleeve 6 through a suspension series lead-down, and the outgoing line adjacent spaced sleeve 6 is connected with a second bus through a second bus side circuit breaker 2.
The A, B, C three phases of the I bus and the II bus are vertically arranged and are connected with the adjacent spacing sleeve 6 of the outgoing line.
To the transformer substation that includes 3 main transformers, 1 st, 2 main transformers are connected with I generating line that is close to main transformer side through I female side circuit breaker 1 from one side inlet wire of HGIS equipment, and 3 rd main transformer gets into through II female side circuit breaker 2 and keeps away from II generating lines that main transformer side.
The invention effectively solves the problems that a main transformer can only enter a bus I in a C-shaped arrangement scheme of 330kV HGIS equipment, and if the main transformer enters a bus II, a space is required to be added or a circuit breaker is required to be added, so that the engineering occupied area is large, the equipment cost is high and the like. The invention improves the C-shaped arrangement operation reliability of the HGIS equipment of the 330kV power distribution device, simultaneously does not increase the occupied area and the circuit breakers, and reduces the problems of difficult land acquisition due to the occupied area, high equipment cost and the like of the project.
The above-mentioned embodiments are only preferred embodiments of the present invention, and are not intended to limit the technical solution of the present invention, and it should be understood by those skilled in the art that the technical solution can be modified and replaced by a plurality of simple modifications and replacements without departing from the spirit and principle of the present invention, and the modifications and replacements also fall into the protection scope covered by the claims.
Claims (7)
1. A C-shaped arrangement main transformer incoming line structure of 330kV HGIS equipment is characterized in that one incoming and outgoing line interval comprises a first bus side circuit breaker (1), a second bus side circuit breaker (2), an interrupter (3), a bus side sleeve (4), a main transformer second bus incoming line side sleeve (5), outgoing line adjacent interval sleeves (6) and adjacent interval overlines (7); the I bus side circuit breaker (1) is connected with the I bus through a bus side sleeve (4), and the II bus side circuit breaker (2) is connected with the II bus through another bus side sleeve (4); the I female side circuit breaker (1) is connected with adjacent spaced overlines (7) through adjacent spaced sleeves (6) for outgoing lines, and outgoing lines are conducted through the adjacent spaced overlines (7); the II-bus side circuit breaker (2) is connected with a main transformer incoming line through a main transformer II-bus incoming line side sleeve (5); two ends of the middle circuit breaker (3) are respectively connected with the wiring between the II female side circuit breaker (2) and the II main transformer female wire inlet side sleeve (5) and between the I female side circuit breaker (1) and the adjacent outlet spacing sleeve (6) through wires.
2. The 330kV HGIS equipment "C" type arranges main transformer incoming line structure of claim 1, characterized in that: leading the HGIS outlet wire which is matched with the main transformer in series into a 330kV relay room building interval which is adjacently arranged through an HGIS pipeline bus, wherein the 330kV relay room building interval does not have HGIS equipment due to arrangement of the 330kV relay room building.
3. The 330kV HGIS equipment "C" type arranges main transformer incoming line structure of claim 2, characterized in that: the HGIS pipeline bus is led into a 330kV relay room building interval, an interval sleeve (6) adjacent to an outgoing line of a main transformer distribution string is arranged in the interval, and the arrangement position of the adjacent interval sleeve (6) of the outgoing line is on the same central line with other sleeves for high-level outgoing lines.
4. The 330kV HGIS equipment "C" type arranges main transformer incoming line structure according to claim 2 or 3, characterized in that: and the adjacent spaced overlines (7) are arranged above the 330kV relay room building spacing.
5. The 330kV HGIS equipment "C" type arranges main transformer incoming line structure of claim 4, characterized in that: the main transformer incoming line is connected to the other side of the HGIS equipment through adjacent spaced overlines (7) and is connected with the adjacent spaced sleeves (6) of the outgoing line through a suspension string leading-down, and the adjacent spaced sleeves (6) of the outgoing line are connected with the II buses through the II bus side circuit breakers (2).
6. The 330kV HGIS equipment "C" type arranges main transformer incoming line structure of claim 1, characterized in that: the A, B, C three phases of the I bus and the II bus are vertically arranged and are connected with the adjacent spaced sleeve (6) of the outgoing line.
7. The 330kV HGIS equipment "C" type arranges main transformer incoming line structure of claim 1, characterized in that: to the transformer substation that includes 3 groups owner, 1 st, 2 main transformers are connected with I generating line that is close to owner side through I female side circuit breaker (1) from one side inlet wire of HGIS equipment, and 3 rd main transformer gets into II generating lines of keeping away from owner side through II female side circuit breaker (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010976238.3A CN111987596A (en) | 2020-09-16 | 2020-09-16 | C-type arrangement main transformer incoming line structure of 330kV HGIS equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010976238.3A CN111987596A (en) | 2020-09-16 | 2020-09-16 | C-type arrangement main transformer incoming line structure of 330kV HGIS equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111987596A true CN111987596A (en) | 2020-11-24 |
Family
ID=73449912
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010976238.3A Pending CN111987596A (en) | 2020-09-16 | 2020-09-16 | C-type arrangement main transformer incoming line structure of 330kV HGIS equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111987596A (en) |
Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0156107A1 (en) * | 1981-05-20 | 1985-10-02 | Hitachi, Ltd. | Gas insulated switchgear equipment |
| JPH11252722A (en) * | 1998-03-06 | 1999-09-17 | Mitsubishi Electric Corp | Gas insulated switchgear |
| US20030111443A1 (en) * | 2001-12-18 | 2003-06-19 | Hitoshi Yamada | Gas-insulated switchgear |
| KR20070096926A (en) * | 2006-03-27 | 2007-10-02 | 가부시끼가이샤 도시바 | Gas insulation switchgear |
| EP2214278A1 (en) * | 2007-11-01 | 2010-08-04 | Mitsubishi Electric Corporation | Gas-insulated switchgear |
| CN204190176U (en) * | 2014-08-29 | 2015-03-04 | 福建永福工程顾问有限公司 | The new arrangement of the female HGIS power distribution equipment of hanging tubular |
| CN204706781U (en) * | 2015-06-25 | 2015-10-14 | 成都城电电力工程设计有限公司 | A kind of 500 kilovolts of HGIS controller switching equipments, controller switching equipment group and power distribution equipments |
| CN105958320A (en) * | 2016-05-27 | 2016-09-21 | 中国能源建设集团安徽省电力设计院有限公司 | Outdoor 500kV HGIS power distribution device structure |
| CN206272192U (en) * | 2016-12-27 | 2017-06-20 | 青海省电力设计院 | A kind of new 330kV power distribution equipments in high altitude localities |
| CN107240884A (en) * | 2017-07-24 | 2017-10-10 | 青海省电力设计院 | A kind of arrangement of power distribution equipment HGIS equipment |
| CN207368547U (en) * | 2017-07-31 | 2018-05-15 | 中国电力技术装备有限公司郑州电力设计院 | A kind of modified 500kV HGIS power distribution equipments based on new national standard |
| CN110380340A (en) * | 2019-09-02 | 2019-10-25 | 上海电力设计院有限公司 | A kind of transformer substation power distribution unit |
-
2020
- 2020-09-16 CN CN202010976238.3A patent/CN111987596A/en active Pending
Patent Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0156107A1 (en) * | 1981-05-20 | 1985-10-02 | Hitachi, Ltd. | Gas insulated switchgear equipment |
| JPH11252722A (en) * | 1998-03-06 | 1999-09-17 | Mitsubishi Electric Corp | Gas insulated switchgear |
| US20030111443A1 (en) * | 2001-12-18 | 2003-06-19 | Hitoshi Yamada | Gas-insulated switchgear |
| KR20070096926A (en) * | 2006-03-27 | 2007-10-02 | 가부시끼가이샤 도시바 | Gas insulation switchgear |
| EP2214278A1 (en) * | 2007-11-01 | 2010-08-04 | Mitsubishi Electric Corporation | Gas-insulated switchgear |
| CN204190176U (en) * | 2014-08-29 | 2015-03-04 | 福建永福工程顾问有限公司 | The new arrangement of the female HGIS power distribution equipment of hanging tubular |
| CN204706781U (en) * | 2015-06-25 | 2015-10-14 | 成都城电电力工程设计有限公司 | A kind of 500 kilovolts of HGIS controller switching equipments, controller switching equipment group and power distribution equipments |
| CN105958320A (en) * | 2016-05-27 | 2016-09-21 | 中国能源建设集团安徽省电力设计院有限公司 | Outdoor 500kV HGIS power distribution device structure |
| CN206272192U (en) * | 2016-12-27 | 2017-06-20 | 青海省电力设计院 | A kind of new 330kV power distribution equipments in high altitude localities |
| CN107240884A (en) * | 2017-07-24 | 2017-10-10 | 青海省电力设计院 | A kind of arrangement of power distribution equipment HGIS equipment |
| CN207368547U (en) * | 2017-07-31 | 2018-05-15 | 中国电力技术装备有限公司郑州电力设计院 | A kind of modified 500kV HGIS power distribution equipments based on new national standard |
| CN110380340A (en) * | 2019-09-02 | 2019-10-25 | 上海电力设计院有限公司 | A kind of transformer substation power distribution unit |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102368612B (en) | Triple-double wiring way of medium-voltage electric distribution network | |
| CN103855713A (en) | Power distribution net rack wiring structure | |
| WO2022194292A1 (en) | Flexible alternating current traction power supply system for implementing through co-phase and operation method therefor | |
| CN103872682A (en) | Switching station feeder line automatic protection method | |
| CN105305431B (en) | A kind of snowflake form rack construction method suitable for Urban Medium Voltage Distribution Network | |
| CN103904564B (en) | High-voltage distribution device with double breakers used for single bus segmentation and application thereof | |
| CN103227468B (en) | Main wiring pairing and stringing optimization method for transformer station | |
| CN204835226U (en) | Line arrangement structure of two complete clusters is joined in marriage into in wiring of one and half circuit breakers | |
| CN203747256U (en) | 220 kV double-bus single-segment breaker single-row arranged arrangement structure | |
| CN212626549U (en) | Main transformer incoming line structure of multi-main-transformer intensive HGIS equipment | |
| CN204577857U (en) | A kind of 110kV transformer station adopting novel wire connecting way | |
| CN111987596A (en) | C-type arrangement main transformer incoming line structure of 330kV HGIS equipment | |
| CN203813436U (en) | Power distribution network rack wiring structure | |
| CN202340066U (en) | Double-bus single-section GIS (gas insulated switchgear) distribution device circuit layout structure | |
| CN201985528U (en) | Series compensation system adopting line iron towers | |
| CN104218460A (en) | 220kv side wiring structure of 500kv high capacity transformer station | |
| CN111668783B (en) | Special-shaped HGIS equipment, electrical main wiring and transformer substation | |
| CN203813438U (en) | Power distribution net rack wiring structure | |
| CN212485806U (en) | Main wiring structure of transformer substation | |
| CN204190186U (en) | The compact HGIS three-row power distribution equipment of single tube post framework pattern is entirely combined based on 220kV | |
| CN208284790U (en) | The single-row arrangement GIS device of 220kV bus extended type | |
| CN211182805U (en) | Wiring structure of low-voltage side of transformer substation | |
| CN205583827U (en) | Arrangement structure with two loop line way series reactor of tower | |
| CN202197020U (en) | 110 kV back-to-back arranged bidirectional outlet power distribution device | |
| CN204156314U (en) | The 220kv side joint line structure of 500kv Large Copacity transformer station |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |