CN102035082B - Direct current grounding system and method thereof - Google Patents
Direct current grounding system and method thereof Download PDFInfo
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- CN102035082B CN102035082B CN200910196802.3A CN200910196802A CN102035082B CN 102035082 B CN102035082 B CN 102035082B CN 200910196802 A CN200910196802 A CN 200910196802A CN 102035082 B CN102035082 B CN 102035082B
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Abstract
The invention provides a direct current grounding system and a method thereof. A plurality of direct current grounding electrodes are connected with each other in parallel by a line to form a grounding island, so that the invention can effectively disperse the direct current grounding electric current aiming at the whole power grid, thereby reducing the influence of the direct current to a peripheral transformer, and being simple and convenient to realize by the existing high-voltage line.
Description
Technical field
The present invention relates to a kind of DC earthing system and method, particularly one relates to direct current grounding pole technology, electric power network technique, the DC earthing system and method in the fields such as direct current inhibition technology.
Background technology
Along with DC techniques extensive use at home and abroad, also more and more higher to the requirement of DC earthing system.Compared with the earthing device of AC system, when DC earthing system is moved in DC transmission system ground return circuit mode, need long-term by very large operating current, be generally hundreds of to thousands of amperes, thereby during due to monopolar operation, can on it, cause larger impact to making in electrical network transformer flow through direct current, both at home and abroad all in the various braking measures of research.
Along with the extensive use of DC techniques, during the operation of direct current grounding pole monopolar ground return, the transformer of AC system is affected to problem and become increasingly conspicuous.For example, District of Shanghai has many times direct currents to land at present, when direct current grounding pole monopolar operation, the transformer of a lot of transformer stations of periphery can produce larger noise and vibration because of direct current, propose various direct currents for this reason and suppressed way, comprised transformer neutral point installation resistance, electric capacity and reverse direct current injection device etc.
But, use the direct current restraining device can only be to suppressing direct current in the ground in somewhere, and cannot eliminate or affect the impact of direct current on whole AC network in ground.
In view of this, how to provide a kind of DC earthing system and method, reduce above-mentioned drawback and become industry technical problem urgently to be resolved hurrily.
Summary of the invention
Technical problem solved by the invention is to provide a kind of DC earthing system and method, for whole electrical network, can effectively disperse direct current earth current, thereby reduces the impact of direct current on periphery transformer.
Technical problem solved by the invention is to provide a kind of DC earthing system and method, can utilize existing high-tension line to realize simply and easily.
For solving the problems of the technologies described above, the invention provides a kind of DC earthing system, comprise multiple direct current grounding poles, between described multiple direct current grounding poles, there is interconnection, be electrically connected with each direct current grounding pole, make each direct current grounding pole parallel connection, form ground connection island.
Between described each direct current grounding pole, by multiple current conversion stations, connect, described interconnection is arranged between each current conversion station.
In specific embodiment, between each direct current grounding pole, there is high-tension line, described interconnection is laid in below described high-tension line.Described interconnection lays by many modes, and this system also comprises DC earthing analytical system, by the distribution of the each DC earthing electrode current of analysis and regulation, thereby reaches optimum parallel way.
The present invention also provides a kind of DC earthing method, for having the DC earthing system of multiple direct current grounding poles, is mainly between multiple direct current grounding poles, to pass through interconnection parallel connection, to form ground connection island.
Between described each direct current grounding pole, by multiple current conversion stations, connect, described interconnection is arranged between each current conversion station.
In specific embodiment, between each direct current grounding pole, there is high-tension line, by the described interconnection described high-tension line below that is laid in; Described interconnection lays by many modes, by the distribution of the each DC earthing electrode current of analysis and regulation, thereby reaches optimum parallel way.
DC earthing system and method for the present invention, by passing through interconnection parallel connection between multiple direct current grounding poles, forms ground connection island, has realized very whole electrical network is effectively disperseed to direct current earth current, thereby reduced the impact of direct current on periphery transformer; Utilize existing high-tension line, implement simple and convenient.
Accompanying drawing explanation
Fig. 1 is DC earthing system architecture schematic diagram of the present invention.
Fig. 2 is that the framework between DC earthing system direct current grounding pole of the present invention and current conversion station is implemented schematic diagram.
Embodiment
Below, by specific instantiation explanation embodiments of the present invention, those skilled in the art can understand other advantages of the present invention and effect easily by content disclosed in the present specification.The present invention also can be implemented or be applied by other different instantiations, and the every details in this specification also can be based on different viewpoints and application, carries out various modifications and change not deviating under spirit of the present invention.
The system of DC earthing described in the present invention, can be applied in direct current grounding pole technology, electric power network technique, the fields such as direct current inhibition technology.
Refer to Fig. 1, it is DC earthing system architecture schematic diagram of the present invention, as shown in the figure, DC earthing system of the present invention, comprise multiple direct current grounding poles 10, between described multiple direct current grounding pole 10, there is interconnection 12, be electrically connected with each direct current grounding pole 10, make each direct current grounding pole parallel connection, entirety forms ground connection island, like this, and owing to forming parallel network between each direct current grounding pole 10, so can effectively disperse direct current earth current to whole electrical network, thereby reduce the impact of DC earthing on periphery transformer.
In the present embodiment, between described each direct current grounding pole, by multiple current conversion stations 13, connect, described interconnection 12 is to set up take each current conversion station 13 as node.
In the present embodiment, between each direct current grounding pole 10, be erected with high-tension line, described interconnection 12 utilizes these high-tension lines originally just having, and lays thereunder, needn't build in addition as facilities such as stringing poles.
Referring to Fig. 2, is that the framework between DC earthing system direct current grounding pole of the present invention and current conversion station is implemented schematic diagram, as shown in the figure, passes through many connections, and control by switches set 14 between described direct current grounding pole 10 and current conversion station 13.And described interconnection 12 also can lay by many modes, when the DC earthing plate 10 ground connection island forming as shown in Figure 1 in parallel is moved, by the radical of different direct current grounding pole 10 interconnections 12 that put into operation, can adjust to a certain extent the distribution of direct current grounding pole 10 electric currents; In addition, described DC earthing system also comprises DC earthing analytical system, can pass through the distribution of each direct current grounding pole 10 electric currents of analysis and regulation, reaches optimum parallel way.In the present embodiment, described DC earthing analytical system is the software systems of CDEGS, can make above-mentioned parallel way reach allocation optimum by analysis, particularly the above-mentioned interconnection laying by many modes is carried out to combinatory analysis.
The present invention also provides a kind of DC earthing method, for having the DC earthing system of multiple direct current grounding poles, is mainly between multiple direct current grounding poles 10, to pass through interconnection 12 parallel connections, to form ground connection island.
In the present embodiment, between described each direct current grounding pole 10, by multiple current conversion stations 13, connect, described interconnection 12 is arranged between each current conversion station 13.
Between each direct current grounding pole 10, there is high-tension line, by the described interconnection 10 described high-tension line below that is laid in; Described interconnection 12 lays by many modes, by the distribution of the each DC earthing electrode current of analysis and regulation, thereby reaches optimum parallel way.
In sum, DC earthing system and method for the present invention, is between multiple direct current grounding poles, to pass through interconnection parallel connection, to form ground connection island, to have realized very whole electrical network is effectively disperseed to direct current earth current, thereby reduced the impact of direct current on periphery transformer; Utilize existing high-tension line, implement comparatively simple and convenient.
Claims (8)
1. a DC earthing system, comprises multiple direct current grounding poles, it is characterized in that: between described multiple direct current grounding poles, have interconnection, be electrically connected with each direct current grounding pole, make each direct current grounding pole parallel connection, form ground connection island;
Between described each direct current grounding pole, by multiple current conversion stations, connect, described interconnection is arranged between each current conversion station.
2. DC earthing system as claimed in claim 1, is characterized in that, between each direct current grounding pole, has high-tension line, and described interconnection is laid in below described high-tension line.
3. DC earthing system as claimed in claim 1, is characterized in that, described interconnection lays by many modes.
4. DC earthing system as claimed in claim 3, is characterized in that, also comprises DC earthing analytical system, by the distribution of the each DC earthing electrode current of analysis and regulation, thereby reaches optimum parallel way.
5. a DC earthing method, for having the DC earthing system of multiple direct current grounding poles, is characterized in that: by passing through interconnection parallel connection between multiple direct current grounding poles, form ground connection island;
Between described each direct current grounding pole, by multiple current conversion stations, connect, described interconnection is arranged between each current conversion station.
6. DC earthing method as claimed in claim 5, is characterized in that, between each direct current grounding pole, has high-tension line, by the described interconnection described high-tension line below that is laid in.
7. DC earthing method as claimed in claim 5, is characterized in that, described interconnection lays by many modes.
8. DC earthing method as claimed in claim 5, is characterized in that, by the distribution of the each DC earthing electrode current of analysis and regulation, thereby reaches optimum parallel way.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910196802.3A CN102035082B (en) | 2009-09-29 | 2009-09-29 | Direct current grounding system and method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN200910196802.3A CN102035082B (en) | 2009-09-29 | 2009-09-29 | Direct current grounding system and method thereof |
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| CN102035082A CN102035082A (en) | 2011-04-27 |
| CN102035082B true CN102035082B (en) | 2014-04-16 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107394428B (en) * | 2017-07-31 | 2023-04-07 | 武汉大学 | Grounding system for co-location of shielding type direct current grounding electrode and converter station grounding grid |
| CN111509420B (en) * | 2020-04-24 | 2021-09-17 | 中国南方电网有限责任公司超高压输电公司检修试验中心 | Horizontal ocean grounding electrode with roundabout arrangement |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201044358Y (en) * | 2007-04-30 | 2008-04-02 | 中国电力工程顾问集团中南电力设计院 | High voltage direct current transmission split type earth electrode |
| CN201060953Y (en) * | 2007-04-30 | 2008-05-14 | 中国电力工程顾问集团中南电力设计院 | High voltage DC transmission compact type earthing electrode |
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201044358Y (en) * | 2007-04-30 | 2008-04-02 | 中国电力工程顾问集团中南电力设计院 | High voltage direct current transmission split type earth electrode |
| CN201060953Y (en) * | 2007-04-30 | 2008-05-14 | 中国电力工程顾问集团中南电力设计院 | High voltage DC transmission compact type earthing electrode |
Non-Patent Citations (3)
| Title |
|---|
| ±800 kV复龙换流站共用接地极设计特点;戚迎等;《电力建设》;20080430;第29卷(第4期);正文第17-18页、图1 * |
| 呙虎.±800kV直流输电系统共用接地极对直流系统的影响研究.《中国优秀硕士学位论文全文数据库》.2009,正文第6页. * |
| 戚迎等.±800 kV复龙换流站共用接地极设计特点.《电力建设》.2008,第29卷(第4期),正文第17-18页、图1. |
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Effective date of registration: 20170417 Address after: 200437 Handan Road, Shanghai, No. 171, No. Co-patentee after: East China Electric Power Test & Research Institute Co., Ltd. Patentee after: Shanghai Sai Pu Le Power Technology Co. Ltd. Address before: 200437 Handan Road, Shanghai, No. 171, No. Patentee before: East China Electric Power Test & Research Institute Co., Ltd. Effective date of registration: 20170417 Address after: 200437 Handan Road, Shanghai, No. 171, No. Co-patentee after: East China Electric Power Test & Research Institute Co., Ltd. Patentee after: Shanghai Sai Pu Le Power Technology Co. Ltd. Address before: 200437 Handan Road, Shanghai, No. 171, No. Patentee before: East China Electric Power Test & Research Institute Co., Ltd. |
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Effective date of registration: 20190930 Address after: 200437 Room 102, building 2, No.171 Handan Road, Hongkou District, Shanghai Co-patentee after: East China Electric Power Test & Research Institute Co., Ltd. Patentee after: Puneng Power Science and Technology Engineering Branch, Shanghai Hengnengtai Enterprise Management Co., Ltd. Address before: 200437 No. 171, Handan Road, Shanghai, Hongkou District Co-patentee before: East China Electric Power Test & Research Institute Co., Ltd. Patentee before: Shanghai Sai Pu Le Power Technology Co. Ltd. Effective date of registration: 20190930 Address after: 200437 Room 102, building 2, No.171 Handan Road, Hongkou District, Shanghai Co-patentee after: East China Electric Power Test & Research Institute Co., Ltd. Patentee after: Puneng Power Science and Technology Engineering Branch, Shanghai Hengnengtai Enterprise Management Co., Ltd. Address before: 200437 No. 171, Handan Road, Shanghai, Hongkou District Co-patentee before: East China Electric Power Test & Research Institute Co., Ltd. Patentee before: Shanghai Sai Pu Le Power Technology Co. Ltd. |
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Correction item: Patentee|Address|Patentee Correct: Shanghai Sai Pu Le Power Technology Co. Ltd.|200437 No. 171, Handan Road, Shanghai, Hongkou District|East China Electric Power Test & Research Institute Co., Ltd. False: Puneng Power Science and Technology Engineering Branch, Shanghai Hengnengtai Enterprise Management Co., Ltd.|200437 Room 102, building 2, No.171 Handan Road, Hongkou District, Shanghai|East China Electric Power Test & Research Institute Co., Ltd. Number: 43-02 Volume: 35 |
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Effective date of registration: 20200416 Address after: 200437 Room 102, building 2, No.171 Handan Road, Hongkou District, Shanghai Co-patentee after: EAST CHINA ELECTRIC POWER RESEARCH INSTITUTE Co.,Ltd. Patentee after: SHANGHAI HENGNENGTAI ENTERPRISE MANAGEMENT CO., LTD.PUNENG POWER TECHNOLOGY ENGINEERING BRANCH Address before: 200437 No. 171, Handan Road, Shanghai, Hongkou District Co-patentee before: EAST CHINA ELECTRIC POWER RESEARCH INSTITUTE Co.,Ltd. Patentee before: SHANGHAI SAIPULE ELECTRIC POWER TECHNOLOGY Co.,Ltd. |
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