CN104753062A - City distribution network multiple direct-current inverter common grounding electrode design method - Google Patents
City distribution network multiple direct-current inverter common grounding electrode design method Download PDFInfo
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- CN104753062A CN104753062A CN201510164232.5A CN201510164232A CN104753062A CN 104753062 A CN104753062 A CN 104753062A CN 201510164232 A CN201510164232 A CN 201510164232A CN 104753062 A CN104753062 A CN 104753062A
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- earth electrode
- electrode
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- earth
- current
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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
-
- 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
- H02J2203/00—Indexing scheme relating to details of circuit arrangements for AC mains or AC distribution networks
- H02J2203/20—Simulating, e g planning, reliability check, modelling or computer assisted design [CAD]
Abstract
The invention provides a city distribution network multiple direct-current inverter common grounding electrode design method. The method is characterized by including determining the grounding manner and the grounding electrode operation manner. The ground resource can be saved to the utmost extent, the influence on environment by city power grid uprating projects can be reduced to the utmost extent, and the method has the advantages of scientific and reasonable design and high practicality.
Description
Technical field
The present invention is the method for designing of a kind of urban power distribution network many DC inversions station One Common Earthing Electrode, is applied to the planning and designing field of city DC converter station.
Background technology
China's Urbanization Progress speed is accelerated further, electricity need load constantly increases, objectively require that electrical network scale and transmission capacity keep sustainable development, multiple DC converter station may be there is in the electrical network of future city, but then, urban distribution network close structure, land resource is seriously deficient, bringing stern challenge to the planning and designing of current conversion station earth electrode, therefore the current conversion station grounding scheme of reasonable, is one of key technology of urban power network planning construction.Have no the bibliographical information about the method for designing of urban power distribution network many DC inversions station One Common Earthing Electrode and practical application so far.
Summary of the invention
The invention provides the method for designing of a kind of urban power distribution network many DC inversions station One Common Earthing Electrode, it is to economize the land resource to greatest extent, for the purpose of the impact of maximum reduction urban distribution network capacity-increasing transformation Engineering, realize scientific and reasonable design, improve practical value.
The technical scheme realizing object of the present invention employing is: the method for designing of a kind of urban power distribution network many DC inversions station One Common Earthing Electrode, and it is characterized in that, it has in comprising:
1) earth electrode form is determined
Multiple current conversion station may be there is in future city electrical network, apart from every one end suitable distance of current conversion station, should grounding system be set, i.e. earth electrode, earth electrode is generally made up of earth electrode lead-in wire, earth electrode diversion system and auxiliary equipment and electrode grounding body three part, its Main Function clamps down on neutral bus current potential and provides path for direct current, during design grounding system, need to consider system condition and technical conditions, wherein system condition relates to the mode of connection, operational mode, operating time and earth current, technical conditions then comprise step voltage, allow the scope of temperature rise
For multiple current conversion station and the city of depositing, adopt the earthing mode of shared grounding body, under this earthing mode, two or more current conversion stations cause earth electrode field terminal tower by respective earth electrode wire, then cause shared grounding electrode by shared feeder cable or wire;
2) earth electrode operational mode is determined
Earth electrode operational mode for two Inverter Station One Common Earthing Electrode polar bodys has: the symmetrical bipolar operation of two Inverter Station; The bipolar operation of-Inverter Station, another Inverter Station is run in one pole ground return circuit mode; Two Inverter Station heteropolarity one pole ground return circuit modes are run; Two Inverter Station are run in same polarity one pole ground return circuit mode, if the first direct current system monopolar operation, second direct current system and the first system homopolarity run, then direct current system becomes two Inverter Station same polarity monopolar operations, now maximum earth current will appear in earth electrode, its value is two direct current system running current sum I
o=I
1P+ I
2P, so earth electrode carries out planning and designing according to two Inverter Station same polarity monopole operating modes.
The method for designing of a kind of urban power distribution network many DC inversions station of the present invention One Common Earthing Electrode, can economize the land resource to greatest extent, the impact of maximum reduction urban distribution network capacity-increasing transformation Engineering, has design science reasonable, practical value advantages of higher.
Accompanying drawing explanation
Fig. 1 is operational mode schematic diagram.
Embodiment
Be further described below in conjunction with the method for designing of the drawings and specific embodiments to a kind of urban power distribution network many DC inversions station of the present invention One Common Earthing Electrode:
The method for designing of a kind of urban power distribution network many DC inversions station of the present invention One Common Earthing Electrode, has in comprising:
1) earth electrode form is determined
Multiple current conversion station may be there is in future city electrical network, apart from every one end suitable distance of current conversion station, should grounding system be set, i.e. earth electrode, earth electrode is generally made up of earth electrode lead-in wire, earth electrode diversion system and auxiliary equipment and electrode grounding body three part, its Main Function clamps down on neutral bus current potential and provides path for direct current, during design grounding system, need to consider system condition and technical conditions, wherein system condition relates to the mode of connection, operational mode, operating time and earth current, technical conditions then comprise step voltage, allow the scope of temperature rise
For multiple current conversion station and the city of depositing, adopt the earthing mode of shared grounding body, under this earthing mode, two or more current conversion stations cause earth electrode field terminal tower by respective earth electrode wire, then cause shared grounding electrode by shared feeder cable or wire;
2) earth electrode operational mode is determined
For two Inverter Station One Common Earthing Electrode polar bodys, as shown in Figure 1, earth electrode has four kinds of operational modes: the symmetrical bipolar operation of two Inverter Station; The bipolar operation of-Inverter Station, another Inverter Station is run in one pole ground return circuit mode; Two Inverter Station heteropolarity one pole ground return circuit modes are run; Two Inverter Station are run in same polarity one pole ground return circuit mode, if the first direct current system monopolar operation, second direct current system and the first system homopolarity run, then direct current system becomes two Inverter Station same polarity monopolar operations, now maximum earth current will appear in earth electrode, its value is two direct current system running current sum I
o=I
1P+ I
2P, so earth electrode carries out planning and designing according to two Inverter Station same polarity monopole operating modes.
Claims (1)
1. a method for designing for urban power distribution network many DC inversions station One Common Earthing Electrode, is characterized in that, it has in comprising:
1) earth electrode form is determined
Multiple current conversion station may be there is in future city electrical network, apart from every one end suitable distance of current conversion station, should grounding system be set, i.e. earth electrode, earth electrode is generally made up of earth electrode lead-in wire, earth electrode diversion system and auxiliary equipment and electrode grounding body three part, its Main Function clamps down on neutral bus current potential and provides path for direct current, during design grounding system, need to consider system condition and technical conditions, wherein system condition relates to the mode of connection, operational mode, operating time and earth current, technical conditions then comprise step voltage, allow the scope of temperature rise
For multiple current conversion station and the city of depositing, adopt the earthing mode of shared grounding body, under this earthing mode, two or more current conversion stations cause earth electrode field terminal tower by respective earth electrode wire, then cause shared grounding electrode by shared feeder cable or wire;
2) earth electrode operational mode is determined
Earth electrode operational mode for two Inverter Station One Common Earthing Electrode polar bodys has: the symmetrical bipolar operation of two Inverter Station; The bipolar operation of-Inverter Station, another Inverter Station is run in one pole ground return circuit mode; Two Inverter Station heteropolarity one pole ground return circuit modes are run; Two Inverter Station are run in same polarity one pole ground return circuit mode, if the first direct current system monopolar operation, second direct current system and the first system homopolarity run, then direct current system becomes two Inverter Station same polarity monopolar operations, now maximum earth current will appear in earth electrode, its value is two direct current system running current sum I
o=I
1P+ I
2P, so earth electrode carries out planning and designing according to two Inverter Station same polarity monopole operating modes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510164232.5A CN104753062A (en) | 2015-04-09 | 2015-04-09 | City distribution network multiple direct-current inverter common grounding electrode design method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510164232.5A CN104753062A (en) | 2015-04-09 | 2015-04-09 | City distribution network multiple direct-current inverter common grounding electrode design method |
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| CN104753062A true CN104753062A (en) | 2015-07-01 |
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| CN201510164232.5A Pending CN104753062A (en) | 2015-04-09 | 2015-04-09 | City distribution network multiple direct-current inverter common grounding electrode design method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108647438A (en) * | 2018-05-10 | 2018-10-12 | 四川大学 | A kind of new soil equivalent resistance model modeling method |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6108180A (en) * | 1999-03-03 | 2000-08-22 | Wilson, Hamilton & Severino Engineers, Llc | Multi-grounded neutral electrical isolation between utility secondary low-voltage power service and high-voltage transmission structures |
| CN102290808A (en) * | 2011-08-11 | 2011-12-21 | 清华大学 | Public earthing system for high-voltage DC (direct current) transmission |
| CN202268666U (en) * | 2011-09-14 | 2012-06-06 | 中国电力工程顾问集团中南电力设计院 | Compact sharing earth electrode arrangement structure |
| CN102904243A (en) * | 2012-09-24 | 2013-01-30 | 中国南方电网有限责任公司超高压输电公司广州局 | Neutral point disperse grounding type two-terminal direct current bipolar transmission system |
| CN103050907A (en) * | 2012-12-11 | 2013-04-17 | 湖北省电力公司检修分公司 | Security maintenance method for common grounding electrode of direct current power transmission systems |
-
2015
- 2015-04-09 CN CN201510164232.5A patent/CN104753062A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6108180A (en) * | 1999-03-03 | 2000-08-22 | Wilson, Hamilton & Severino Engineers, Llc | Multi-grounded neutral electrical isolation between utility secondary low-voltage power service and high-voltage transmission structures |
| CN102290808A (en) * | 2011-08-11 | 2011-12-21 | 清华大学 | Public earthing system for high-voltage DC (direct current) transmission |
| CN202268666U (en) * | 2011-09-14 | 2012-06-06 | 中国电力工程顾问集团中南电力设计院 | Compact sharing earth electrode arrangement structure |
| CN102904243A (en) * | 2012-09-24 | 2013-01-30 | 中国南方电网有限责任公司超高压输电公司广州局 | Neutral point disperse grounding type two-terminal direct current bipolar transmission system |
| CN103050907A (en) * | 2012-12-11 | 2013-04-17 | 湖北省电力公司检修分公司 | Security maintenance method for common grounding electrode of direct current power transmission systems |
Non-Patent Citations (1)
| Title |
|---|
| 崔明德: "《±800kV直流输电接地极设计及影响分析》", 《中国优秀硕士学位论文全文数据库（电子期刊）》 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108647438A (en) * | 2018-05-10 | 2018-10-12 | 四川大学 | A kind of new soil equivalent resistance model modeling method |
| CN108647438B (en) * | 2018-05-10 | 2021-07-30 | 四川大学 | Soil equivalent resistance model modeling method |
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Application publication date: 20150701 |
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