CN109494760B - Line guiding structure of 750kV series compensation power distribution device - Google Patents
Line guiding structure of 750kV series compensation power distribution device Download PDFInfo
- Publication number
- CN109494760B CN109494760B CN201811646310.5A CN201811646310A CN109494760B CN 109494760 B CN109494760 B CN 109494760B CN 201811646310 A CN201811646310 A CN 201811646310A CN 109494760 B CN109494760 B CN 109494760B
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- series compensation
- gil
- distribution device
- sleeve
- power distribution
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- 230000005540 biological transmission Effects 0.000 claims abstract description 9
- 238000010276 construction Methods 0.000 abstract description 6
- 229910000831 Steel Inorganic materials 0.000 abstract description 2
- 238000000034 method Methods 0.000 abstract description 2
- 239000010959 steel Substances 0.000 abstract description 2
- 230000000295 complement effect Effects 0.000 description 18
- 239000004020 conductor Substances 0.000 description 12
- 238000004519 manufacturing process Methods 0.000 description 3
- 238000002955 isolation Methods 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 230000009466 transformation Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000008520 organization Effects 0.000 description 1
- 238000012876 topography Methods 0.000 description 1
Classifications
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- 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
- H02J3/18—Arrangements for adjusting, eliminating or compensating reactive power in networks
- H02J3/20—Arrangements for adjusting, eliminating or compensating reactive power in networks in long overhead lines
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
- H02G7/00—Overhead installations of electric lines or cables
- H02G7/20—Spatial arrangements or dispositions of lines or cables on poles, posts or towers
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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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- 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
Abstract
The invention discloses a circuit guiding structure of a 750kV series compensation power distribution device, which comprises a first down-lead and a second down-lead which are respectively arranged at two sides of a base corner tower; the first down-lead and the second down-lead are respectively connected with a GIL line side string compensation wire sleeve and a GIL line side string compensation wire sleeve; the series compensation distribution device is respectively connected with the GIL series compensation side series compensation wire inlet sleeve and the GIL series compensation side series compensation wire sleeve; the series compensation power distribution device is arranged at one side of the power transmission line of the first-order corner tower; the expanded series compensation power distribution device is separated from the existing corner tower, so that the occupied area is small, the land-marking cost is reduced, and the land resources are saved; the method is not affected by the electrified operation circuit during construction, and can greatly compress the circuit power failure time caused by the extension of the series compensation power distribution device; the wiring is succinct, make full use of former operation line on the corner tower, the drawing of cluster compensation distribution equipment need not to set up special outlet frame, very big reduction engineering steel consumption, practiced thrift the investment of engineering.
Description
Technical Field
The invention belongs to the technical field of transformer substations and series compensation stations, and particularly relates to a circuit connection structure of a 750kV series compensation power distribution device.
Background
Along with the rapid development of national economy in China, the power industry in China also rapidly develops, and the construction of the domestic power grid is rapid. By 2013, 75 lines of 750kV are arranged in the whole network in northwest region, the total length is about 12731.235km, 26 seats of 750kV power substations and 65000MVA of main transformer capacity. At present, 750kV series compensation power distribution devices are planned in the early stage of alternating current power transmission and transformation projects (Jinchang-Jiuquan-Anxi power transmission lines) of a first channel sent out by 750kV alternating current ultrahigh voltage Xinjiang in a domestic 750kV power grid, and alternating current power transmission and transformation projects (Chaidamu-Hai-Xinjiang-Japanese mountain power transmission lines) of a second channel sent out by alternating current ultrahigh voltage Xinjiang.
In recent years, wind power and photovoltaic in northwest regions are rapidly developed, and the internet surfing requirements are increasingly increased, so that the conveying capacity and the stability level of the existing 750kV power grid are severely tested. In order to solve the problem, a serial compensation power distribution device is required to be arranged on a part of 750kV lines, and according to the system condition, a serial compensation station can be arranged on the serial compensation power distribution device together with a transformer substation or independently; the arrangement mode of the traditional portal frame series compensation power distribution device with other domestic voltage levels is applied to the lines of the expansion series compensation power distribution device, so that the occupied area index is large, the power failure time of the original operation line is required to be long during expansion, and the production operation requirement of the existing line cannot be met. Therefore, the layout and the line leading design scheme of the 750kV series compensation power distribution device during extension are required to be improved, and the result of the improvement is significant for construction, investment and operation of the 750kV series compensation power distribution device extension project.
Disclosure of Invention
In order to solve the problems, the invention provides a line guiding structure of a 750kV series compensation power distribution device, which can effectively save occupied area and engineering investment and can solve the problem that the original operation line is required to be cut off for a long time when the traditional scheme of the extension series compensation power distribution device is used.
In order to achieve the above purpose, the invention adopts the following technical scheme: a line guiding structure of 750kV series compensation power distribution device comprises a first down-lead and a second down-lead which are respectively arranged at two sides of a basic corner tower, a GIL line side series compensation wire inlet sleeve, a GIL series compensation side series compensation wire sleeve, a GIL line side series compensation wire sleeve and a series compensation power distribution device,
the first down conductor is connected with the GIL line side string complement wire sleeve; the second down-lead is connected with the GIL line side series compensation wire sleeve; the GIL line side string compensation wire inlet sleeve is connected with the GIL string compensation side string compensation wire inlet sleeve, and the GIL string compensation side string compensation wire outlet sleeve is connected with the GIL line side string compensation wire outlet sleeve; the series compensation distribution device is respectively connected with the GIL series compensation side series compensation wire inlet sleeve and the GIL series compensation side series compensation wire sleeve; the series compensation power distribution device is arranged on one side of the power transmission line of the base corner tower.
The GIL line side series compensation wire inlet sleeve is connected with the GIL series compensation side series compensation wire inlet sleeve through a GIL series compensation side series compensation wire inlet pipeline;
the GIL string compensation side string compensation inlet pipe is provided with a plurality of sections.
The GIL series compensation side series compensation wire sleeve is connected with the GIL circuit side series compensation wire sleeve through a GIL series compensation wire pipeline.
The GIL series compensation side series compensation line pipeline is provided with a plurality of sections.
The distance between the first down-lead and the second down-lead is not less than 50 meters.
The distance between the lower ends of the first down conductor and the second down conductor and the ground is not less than 13m.
Compared with the prior art, the invention has at least the following beneficial effects: the invention respectively makes down wires from the line wires at the two sides of the corner tower to the GIL sleeve, compared with the traditional gate-type framework arrangement scheme, the invention can greatly compress the occupation area of the series compensation distribution device area, reduce land-marking cost and save land resources; the serial compensation power distribution device is led out through the GIL pipeline and can be arranged outside an original line, so that the original running line is not affected when the serial compensation power distribution device is expanded and constructed; after the construction of the series compensation power distribution device is completed, the circuits on the two sides of the corner tower are led to the GIL sleeve by utilizing the circuit maintenance time, so that the normal production of the circuits can be restored; compared with the traditional arrangement mode of the series compensation power distribution device, the method can greatly compress the line power failure time caused by expanding the series compensation power distribution device; the GIL pipeline arrangement is adopted, in actual engineering, the series compensation power distribution device can be arranged according to the system position and the site topography, the series compensation power distribution device can be built together with the original transformer substation, and the series compensation stations can be independently arranged, so that the arrangement flexibility is high; the corner tower on the original operation line is fully utilized, a special outlet frame is not required to be arranged for leading out the series compensation power distribution device, the steel consumption of engineering is greatly reduced, and the civil engineering investment of the engineering is saved.
Drawings
Fig. 1 is a schematic top view of the present invention.
FIG. 2 is a schematic diagram of a wiring section of a corner tower.
In the drawing, a 1-primary corner tower, a 2-jumper, a 3-string complement station incoming line, a 4-first down-lead, a 5-GIL line side string complement incoming line sleeve, a 6-GIL string complement side string complement incoming line pipeline, a 7-GIL string complement side string complement incoming line sleeve, an 8-string complement distribution device, a 9-GIL string complement side string complement outgoing line sleeve, a 10-GIL string complement side string complement outgoing line pipeline, a 11-GIL line side string complement outgoing line sleeve, a 12-second down-lead and a 13-string complement station outgoing line.
Detailed Description
The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is apparent that the described embodiments are only some embodiments of the present invention, but not all embodiments, and all other embodiments obtained by those skilled in the art without making creative efforts based on the embodiments of the present invention are included in the protection scope of the present invention.
The applicant designs a new line leading structure in a construction of a 750kV series compensation power distribution device, the scheme utilizes a basic corner tower of an original operation line, generally a first basic tower of a transformer substation outlet line, untwists jumpers 2 at two sides of the basic corner tower 1, and is respectively connected to a GIL sleeve connected with a lower series compensation power distribution device 8 from lines at two sides of the basic corner tower 1 by a first leading-down line 4 and a second leading-down line 12, and the series compensation power distribution device is connected with the original operation line through the GIL sleeve; the GIL sleeve comprises a GIL line side string compensating inlet sleeve 5, a GIL string compensating side string compensating inlet sleeve 7, a GIL string compensating side string compensating outlet sleeve 9 and a GIL line side string compensating outlet sleeve 11.
The expanded series compensation power distribution device 8 is arranged nearby the corner tower, can be built together with the original transformer substation, and can be independently provided with series compensation stations, and the arrangement mode of the series compensation power distribution device 8 is not limited; the extended series compensation power distribution device comprises a series part platform, a bypass breaker, auxiliary equipment, a series isolation switch, a bypass isolation switch, a lightning arrester and a voltage transformer.
The door-shaped framework which is required to be arranged for the outgoing line of the traditional series compensation power distribution device 8 is eliminated, the incoming and outgoing line of the series compensation power distribution device 8 is directly led to the position right below the original operation line by a GIL pipeline, and an outgoing line voltage transformer and a lightning arrester are arranged nearby in the series compensation power distribution device area; the GIL tubes include GIL string make-up side string make-up line tube 6 and GIL string make-up side string make-up line tube 10.
The circuit guiding structure of the 750kV series compensation power distribution device comprises a first down conductor 4, a second down conductor 12, a GIL circuit side series compensation wire inlet sleeve 5, a GIL series compensation wire inlet sleeve 7, a GIL series compensation wire sleeve 9, a GIL circuit side series compensation wire sleeve 11 and a series compensation power distribution device 8 which are respectively arranged at two sides of a base corner tower 1, wherein the first down conductor 4 is connected with the GIL circuit side series compensation wire inlet sleeve 5; the second down conductor 12 is connected with the GIL line side series patch cord sleeve 11; the GIL line side string compensation wire inlet sleeve 5 is connected with the GIL string compensation side string compensation wire inlet sleeve 7, and the GIL string compensation side string compensation wire sleeve 9 is connected with the GIL line side string compensation wire sleeve 11; the series compensation distribution device 8 is respectively connected with the GIL series compensation side series compensation wire inlet sleeve 7 and the GIL series compensation side series compensation wire outlet sleeve 9; the series compensation power distribution device 8 is arranged at one side of the power transmission line of the basic turret 1; the first down-lead 4 is connected with the serial complement station incoming line 3, and the second down-lead 12 is connected with the serial complement station outgoing line 13.
The GIL line side string compensation wire inlet sleeve 5 is connected with the GIL string compensation side string compensation wire inlet sleeve 7 through the GIL string compensation side string compensation wire inlet pipe 6; the GIL string compensation side string compensation inlet pipe 6 is provided with a plurality of sections.
The GIL series compensation side series compensation wire sleeve 9 is connected with the GIL circuit side series compensation wire sleeve 11 through the GIL series compensation wire pipeline 10; the GIL string complement side string complement line pipe 10 is provided with a plurality of sections.
As shown in fig. 2, the distance between the first down conductor 4 and the second down conductor 12 is not less than 50 meters; the distance between the lower ends of the first down conductor 4 and the second down conductor 12 and the ground is not less than 13m; the horizontal distance between the series compensation power distribution device and the first down conductor 4 can be flexibly adjusted according to specific engineering requirements.
The series compensation platform, the bypass breaker, the auxiliary equipment, the series isolating switch, the bypass isolating switch, the lightning arrester and the voltage transformer in the series compensation power distribution device 8 are all arranged on one side of the corner tower.
As shown in fig. 1, the invention provides an embodiment of a line connection structure of a series compensation power distribution device for expanding 750kV, and as can be seen from the figure, the embodiment is to expand a two-circuit outlet series compensation power distribution device, and the expanded series compensation power distribution device 8 is connected at a corner tower 1 of an outlet line of an original operated transformer substation and is combined with the transformer substation; the expanded 750kV series compensation power distribution device is arranged on one side of an outgoing line corner tower line, is close to an original running transformer substation, does not cross the original outgoing line, and an incoming and outgoing line of the series compensation power distribution device 8 is led to the right lower part of two sides of a base corner tower 1 through GIL pipelines of the 750kV power transmission line; when the expanded series compensation distribution device is constructed, the distance between the expanded series compensation distribution device and the original line is far, normal operation production of the original line is not affected, and an outlet sleeve comprising a GIL pipeline right below the line can be installed in an electrified mode after construction organization; after all the equipment is installed, the lines are powered off, the two sides of the corner tower are respectively led to the GIL sleeve after the jumper wires of the lines at the two sides are disconnected, and the operation of the original lines can be restored.
According to the analysis, the novel structure of the series compensation power distribution device which adopts the GIL pipeline at the line corner tower for leading is small in occupied area, the operation of the original line is not affected during extension, the power failure time is greatly reduced, the cooperation with the line is more coordinated, the operation and maintenance are more convenient, the arrangement is more flexible, and the series compensation power distribution device can be applied to engineering; and provides a new optimized solution for the design and arrangement of the power distribution device of the expanded series compensation power distribution device.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present invention, and are not limiting; although the invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may be modified or some technical features may be replaced with other technical solutions, which may not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.
Claims (1)
1. The circuit leading structure of the 750kV series compensation power distribution device is characterized by comprising a first down-lead (4) and a second down-lead (12) which are respectively arranged at two sides of a base corner tower (1), a GIL circuit side series compensation wire inlet sleeve (5), a GIL series compensation side series compensation wire sleeve (7), a GIL series compensation wire sleeve (9), a GIL circuit side series compensation wire sleeve (11) and a series compensation power distribution device (8),
the first down-lead (4) is connected with a GIL line side series compensation wire inlet sleeve (5); the second down-lead (12) is connected with the GIL line side series compensation wire sleeve (11); the GIL line side string compensation wire inlet sleeve (5) is connected with the GIL string compensation side string compensation wire inlet sleeve (7), and the GIL string compensation side string compensation wire sleeve (9) is connected with the GIL line side string compensation wire sleeve (11); the series compensation distribution device (8) is respectively connected with the GIL series compensation side series compensation wire inlet sleeve (7) and the GIL series compensation side series compensation wire sleeve (9); the series compensation power distribution device (8) is arranged at one side of the power transmission line of the base corner tower (1); the distance between the first down-lead (4) and the second down-lead (12) is not less than 50 meters; the distance between the lower ends of the first down-lead (4) and the second down-lead (12) and the ground is not less than 13m; the GIL line side series compensation wire inlet sleeve (5) is connected with the GIL series compensation side series compensation wire inlet sleeve (7) through a GIL series compensation side series compensation wire inlet pipeline (6); the GIL series compensation side series compensation inlet pipe (6) is provided with a plurality of sections; the GIL series compensation side series compensation wire sleeve (9) is connected with the GIL line side series compensation wire sleeve (11) through a GIL series compensation side series compensation wire pipeline (10); the GIL series compensation side series compensation line pipeline (10) is provided with a plurality of sections.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811646310.5A CN109494760B (en) | 2018-12-29 | 2018-12-29 | Line guiding structure of 750kV series compensation power distribution device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811646310.5A CN109494760B (en) | 2018-12-29 | 2018-12-29 | Line guiding structure of 750kV series compensation power distribution device |
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| Publication Number | Publication Date |
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| CN109494760A CN109494760A (en) | 2019-03-19 |
| CN109494760B true CN109494760B (en) | 2024-03-26 |
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