CN108493983B - Compact AC/DC GIL transformer substation - Google Patents
Compact AC/DC GIL transformer substation Download PDFInfo
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- CN108493983B CN108493983B CN201810555122.5A CN201810555122A CN108493983B CN 108493983 B CN108493983 B CN 108493983B CN 201810555122 A CN201810555122 A CN 201810555122A CN 108493983 B CN108493983 B CN 108493983B
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- 239000012212 insulator Substances 0.000 claims abstract description 5
- 230000005540 biological transmission Effects 0.000 claims description 12
- 238000012423 maintenance Methods 0.000 claims description 5
- 230000007704 transition Effects 0.000 claims description 4
- WABPQHHGFIMREM-UHFFFAOYSA-N lead(0) Chemical compound [Pb] WABPQHHGFIMREM-UHFFFAOYSA-N 0.000 claims description 3
- 238000002955 isolation Methods 0.000 abstract description 3
- 238000000034 method Methods 0.000 description 2
- 238000005273 aeration Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000004519 manufacturing process 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
- H02J3/36—Arrangements for transfer of electric power between ac networks via a high-tension dc link
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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
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/60—Arrangements for transfer of electric power between AC networks or generators via a high voltage DC link [HVCD]
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Direct Current Feeding And Distribution (AREA)
Abstract
A compact AC/DC GIL transformer station comprises a converter station, a DC GIL cable system and an AC GIL cable system; the converter station comprises a flexible direct-current IGBT valve system and a flexible charging converter transformer, one end of the flexible charging converter transformer is connected to the flexible direct-current IGBT valve system through a direct-current high-power high-voltage power cable, and the flexible direct-current IGBT valve system is connected to a direct-current GIL system through the direct-current high-power high-voltage power cable; the direct-current GIL cable system comprises a direct-current high-power high-voltage power cable, a direct-current GIL system, an underground pipe gallery and a fixed bracket; the portal frame is connected to the underground part of the alternating current GIL through an alternating current insulator, and transmits power through a direct current GIL cable system and an alternating current GIL cable system of the converter station. The invention has the advantages of compact structure, small occupied area and the like, and is particularly suitable for interconnection and isolation of large-area power grids.
Description
Technical Field
The invention relates to the technical field of compact connection conversion power control for a large-area alternating current power grid.
Background
The alternating current power grid is connected by the converter station and is gradually pushed away on the China land, mainly because the direct current system has the characteristics of large power transmission capacity and the like, the application of the converter station on the power grid system is beneficial to guaranteeing the safety and stability of the large power grid, isolating the large power grid into a small regional power grid and interconnecting the power grids by the direct current system, and the voltage stability, the current stability and the system stability of the supporting alternating current power grid are all good.
However, since the current converter station adopts more thyristors and IGBT flexible direct current, but the current land is tense, the occupied area of the converter station is large, especially the occupied area of the back-to-back traditional direct current and flexible direct current system is also large if the voltage stability control system such as statcom is added, the traditional converter station has the problem of large occupied area and high land cost. Compared with the method for manufacturing the transformer substation with the large power grid, the method has the advantages that the influence on the surface environment is large, so that the novel transformer substation with small occupied area and large power grid direct current isolation can be achieved, and the safety of the large power grid is guaranteed.
The invention solves the problem of large occupied area by the mixed application of the underground direct current system and the underground alternating current-direct current GIL system.
Disclosure of Invention
The invention provides a large-area alternating-current power grid through a back-to-back type direct-current GIL in a converter station, which solves the problem of large occupied area of the converter station. The device has small occupied area and compact structure. The equipment maintenance cost is low, and the converter transformer, the direct-current GIL and the alternating-current GIL systems filled with SF6 gas can recycle the control, so that the influence from the external environment is small.
The invention is realized by the following technical scheme.
A compact AC/DC GIL substation consists of a converter station, a DC GIL cable system connected with the two converter stations, and an AC GIL cable system respectively connected with the converter station and the DC GIL system; wherein:
1) The converter station is formed by connecting a flexible direct-current IGBT valve system and a flexible charging converter transformer, one end of the flexible charging converter transformer is connected to the flexible direct-current IGBT valve system through a direct-current high-power high-voltage power cable, the flexible direct-current IGBT valve system is connected to a direct-current GIL system through a direct-current high-power high-voltage power cable, a part of the direct-current GIL system is on the ground, a part of the direct-current GIL system is underground, an underground part of the direct-current GIL system is connected to the converter station through an underground pipe gallery, the direct-current GIL system is connected to the middle flexible direct-current IGBT valve system through the direct-current high-power high-voltage power cable, the flexible direct-current IGBT valve system is connected to an alternating-current GIL overground part through the direct-current high-power high-voltage power cable, and the alternating-current GIL overground part is communicated with the alternating-current GIL underground part.
2) The direct-current GIL cable system comprises a direct-current high-power high-voltage power cable, a direct-current GIL system, an underground pipe gallery and a fixed bracket; the direct-current high-power high-voltage power cable is inserted into the direct-current GIL system to form a direct-current cable transition terminal, and is connected to the direct-current GIL system, and the direct-current GIL system is positioned outside the underground pipe gallery part and supported by a fixed bracket;
3) The alternating-current GIL cable system comprises an alternating-current GIL underground part of a converter station maintenance pipe gallery and an alternating-current transmission line system; the underground pipe gallery is communicated with the converter station and the underground pipe gallery, the underground part of the alternating-current GIL system is located in the underground pipe gallery and is composed of a fixed support and a movable support, the underground pipe gallery is communicated with the converter station and the alternating-current transmission line system, the alternating-current transmission line system is connected to a portal frame through a lead wire, the portal frame is connected to the underground part of the alternating-current GIL through an alternating-current insulator, and electric power is transmitted through a direct-current GIL cable system and an alternating-current GIL cable system of the converter station.
The invention has the advantages of compact structure, small occupied area and the like, and is particularly suitable for interconnection and isolation of large-area power grids.
Drawings
FIG. 1 is a schematic diagram of a compact AC-DC GIL substation;
wherein: a converter station; 2. a direct current GIL cable system; 3. an ac GIL cable system; 4. an alternating current transmission line system; 5. a ground dividing line; 6. DC high-power high-voltage power cable; 7. a flexible direct current IGBT valve system; 8. flexible aeration converter transformer; 9. exchanging the aerial parts of the GIL; 10. exchanging the underground portion of the GIL; 11. a fixed bracket; 12. a movable support; 13. converter station service pipe gallery; 14. a direct current GIL system; 15. an alternating current insulator; 16. a lead wire; 17. a portal frame; 18. underground; 19. ground; 20. underground pipe gallery; 21. the DC cable is terminated excessively.
Detailed Description
The present invention is further described below with reference to the drawings and examples.
A compact AC/DC GIL substation consists of a converter station 1, a DC GIL cable system 2 connected with the two converter stations 1, and an AC GIL cable system 3 respectively connected with the converter stations 1 and the DC GIL system 4; wherein:
1) The converter station 1 is formed by connecting a flexible direct-current IGBT valve system 7 with a flexible charging converter transformer 8, one end of the flexible charging converter transformer 8 is connected to the flexible direct-current IGBT valve system 7 through a direct-current high-power high-voltage power cable 6, the flexible direct-current IGBT valve system 7 is connected to a direct-current GIL system 14 through the direct-current high-power high-voltage power cable 7, a part of the direct-current GIL system 4 is on the ground 19, a part of the direct-current GIL system 14 is under the ground 18, the underground part of the direct-current GIL system 14 is connected to the converter station 1 through a utility tunnel 20, the direct-current GIL system 14 is connected to the middle flexible direct-current IGBT valve system 7 through the direct-current high-power high-voltage power cable 7, the flexible direct-current IGBT valve system 7 is connected to the converter transformer 8 through the direct-current high-power high-voltage power cable 7, the converter transformer 8 is connected to an alternating-current GIL overground part 9 through the direct-current high-power high-voltage power cable 7, and the alternating-current GIL overground part 9 and the alternating-current GIL underground part 10 are in a communicating state;
2) The direct-current GIL cable system 2 comprises a direct-current high-power high-voltage power cable 6, a direct-current GIL system 14, an underground pipe gallery 20 and a fixed bracket 11; the direct-current high-power high-voltage power cable 6 is inserted into the direct-current GIL system 14 to form a direct-current cable transition terminal 21 and is connected to the direct-current GIL system 14, and the direct-current GIL system 14 is positioned outside the underground pipe gallery 20 and is supported by a fixed bracket;
3) The alternating-current GIL cable system 3 comprises an alternating-current GIL underground part 10 of a converter station maintenance pipe gallery 13 and an alternating-current transmission line system 4; the converter maintenance pipe gallery 13 is communicated with the converter station 1 and the underground pipe gallery 11, the alternating current GIL system underground part 10 is located in the underground pipe gallery 20, the underground pipe gallery 20 is communicated with the converter station 1 and the alternating current transmission line system 4 through a fixed support 11 and a movable support 12, the alternating current transmission line system 4 is connected to a portal frame 17 through a lead 16, the portal frame is connected to the alternating current GIL underground part 10 through an alternating current insulator 15, and electric power is transmitted through a direct current GIL cable system 2 and an alternating current GIL cable system 3 of the converter station 1.
As shown in fig. 1, the flexible gas-filled converter transformer 8 is placed indoors by filling SF6 gas into the converter station 1, the flexible gas-filled converter transformer 8 is connected to the flexible direct current IGBT valve system 7 through a cable at one end, the other end is connected to the underground part 10 of the alternating current GIL through the aerial part 9 of the alternating current GIL, the flexible gas-filled converter transformer 8 is isolated from the aerial part 9 of the alternating current GIL by the air chamber, the movable support 12 is mainly used for overhauling the alternating current GIL and the direct current GIL, the surface of the converter station has no exposed charged part, all the charged parts are compactly and orderly arranged in the converter station 1, and the direct current GIL and the direct current high-power high-voltage power cable 6 of the direct current type are connected through the direct current cable transition terminal 21.
Claims (1)
1. A compact AC/DC GIL transformer substation is characterized in that: the system consists of a converter station, a direct-current GIL cable system connected to the two converter stations and an alternating-current GIL cable system respectively connected with the converter station and the direct-current GIL system; wherein:
the converter station is formed by connecting a flexible direct-current IGBT valve system and a flexible charging converter transformer, one end of the flexible charging converter transformer is connected to the flexible direct-current IGBT valve system through a direct-current high-power high-voltage power cable, the flexible direct-current IGBT valve system is connected to a direct-current GIL system through a direct-current high-power high-voltage power cable, one part of the direct-current GIL system is on the ground, one part of the direct-current GIL system is under the ground, the underground part of the direct-current GIL system is connected to the converter station through an underground pipe gallery, the direct-current GIL system is connected to the flexible direct-current IGBT valve system through the direct-current high-power high-voltage power cable, the flexible charging converter transformer is connected to an alternating-current GIL overground part through the direct-current high-power high-voltage power cable, and the alternating-current GIL overground part is in a communicating state;
the direct-current GIL cable system comprises a direct-current high-power high-voltage power cable, a direct-current GIL system, an underground pipe gallery and a fixed bracket; the direct-current high-power high-voltage power cable is inserted into the direct-current GIL system to form a direct-current cable transition terminal, and is connected to the direct-current GIL system, and the direct-current GIL system is positioned outside the underground pipe gallery part and supported by a fixed bracket;
the alternating-current GIL cable system comprises an alternating-current GIL underground part of a converter station maintenance pipe gallery and an alternating-current transmission line system; the utility model provides a current transformer station overhauls pipe gallery UNICOM current transformer station and underground pipe gallery, exchanges GIL underground portion and is located underground pipe gallery, constitutes through fixed bolster and movable support, and underground pipe gallery UNICOM current transformer station and alternating current transmission line system, alternating current transmission line system are connected to the portal frame through the lead wire, and the portal frame is connected to exchanging GIL underground portion through exchanging the insulator, through the direct current GIL cable system and the alternating current GIL cable system of current transformer station with electric power transmission.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810555122.5A CN108493983B (en) | 2018-06-01 | 2018-06-01 | Compact AC/DC GIL transformer substation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810555122.5A CN108493983B (en) | 2018-06-01 | 2018-06-01 | Compact AC/DC GIL transformer substation |
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| Publication Number | Publication Date |
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| CN108493983A CN108493983A (en) | 2018-09-04 |
| CN108493983B true CN108493983B (en) | 2024-01-30 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201810555122.5A Active CN108493983B (en) | 2018-06-01 | 2018-06-01 | Compact AC/DC GIL transformer substation |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109510246A (en) * | 2019-01-07 | 2019-03-22 | 南京南瑞继保电气有限公司 | A kind of offshore wind farm direct current grid-connected system |
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|---|---|---|---|---|
| CN101718824A (en) * | 2009-12-07 | 2010-06-02 | 中国电力科学研究院 | Experiment device used for extra-high voltage alternating current-direct current gas insulated metal enclosed transmission line |
| CN102157760A (en) * | 2011-03-18 | 2011-08-17 | 云南电力试验研究院(集团)有限公司 | Quick charging method of electric automobile based on flexible direct current (DC) transmission |
| CN203839791U (en) * | 2014-05-15 | 2014-09-17 | 中国能源建设集团广东省电力设计研究院 | Connecting structure of valve reactor and voltage source converter in flexible DC power transmission system |
| CN105162016A (en) * | 2015-04-03 | 2015-12-16 | 中国能源建设集团广东省电力设计研究院 | Connecting method and connecting structure of valve reactor and voltage source transverter in flexible direct current power transmission |
| CN105552948A (en) * | 2016-02-05 | 2016-05-04 | 国网浙江省电力公司湖州供电公司 | Power grid frequency-modulating method based on flexible direct-current transmission system |
| CN106992536A (en) * | 2017-03-22 | 2017-07-28 | 全球能源互联网研究院 | A kind of main electrical scheme system of marine wind electric field flexible direct current power transmission system |
| CN107204624A (en) * | 2017-04-25 | 2017-09-26 | 国家电网公司 | A kind of transmission system and its control method for adapting to global energy internet |
| CN107895963A (en) * | 2017-11-27 | 2018-04-10 | 中国西电电气股份有限公司 | A kind of soft straight current conversion station topological structure of marine wind electric field and its grid-connected system |
| CN208445291U (en) * | 2018-06-01 | 2019-01-29 | 中国能源建设集团云南省电力设计院有限公司 | A kind of compact alternating current-direct current GIL substation |
-
2018
- 2018-06-01 CN CN201810555122.5A patent/CN108493983B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101718824A (en) * | 2009-12-07 | 2010-06-02 | 中国电力科学研究院 | Experiment device used for extra-high voltage alternating current-direct current gas insulated metal enclosed transmission line |
| CN102157760A (en) * | 2011-03-18 | 2011-08-17 | 云南电力试验研究院(集团)有限公司 | Quick charging method of electric automobile based on flexible direct current (DC) transmission |
| CN203839791U (en) * | 2014-05-15 | 2014-09-17 | 中国能源建设集团广东省电力设计研究院 | Connecting structure of valve reactor and voltage source converter in flexible DC power transmission system |
| CN105162016A (en) * | 2015-04-03 | 2015-12-16 | 中国能源建设集团广东省电力设计研究院 | Connecting method and connecting structure of valve reactor and voltage source transverter in flexible direct current power transmission |
| CN105552948A (en) * | 2016-02-05 | 2016-05-04 | 国网浙江省电力公司湖州供电公司 | Power grid frequency-modulating method based on flexible direct-current transmission system |
| CN106992536A (en) * | 2017-03-22 | 2017-07-28 | 全球能源互联网研究院 | A kind of main electrical scheme system of marine wind electric field flexible direct current power transmission system |
| CN107204624A (en) * | 2017-04-25 | 2017-09-26 | 国家电网公司 | A kind of transmission system and its control method for adapting to global energy internet |
| CN107895963A (en) * | 2017-11-27 | 2018-04-10 | 中国西电电气股份有限公司 | A kind of soft straight current conversion station topological structure of marine wind electric field and its grid-connected system |
| CN208445291U (en) * | 2018-06-01 | 2019-01-29 | 中国能源建设集团云南省电力设计院有限公司 | A kind of compact alternating current-direct current GIL substation |
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| CN108493983A (en) | 2018-09-04 |
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