CN105140870A - Current collecting and short circuit system of extra-high-voltage direct-current ice melting apparatus - Google Patents
Current collecting and short circuit system of extra-high-voltage direct-current ice melting apparatus Download PDFInfo
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- CN105140870A CN105140870A CN201510635196.6A CN201510635196A CN105140870A CN 105140870 A CN105140870 A CN 105140870A CN 201510635196 A CN201510635196 A CN 201510635196A CN 105140870 A CN105140870 A CN 105140870A
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Abstract
The invention relates to a current collecting and short circuit system of an extra-high-voltage direct-current ice melting apparatus. The system is composed of a plurality of aluminium cable steel-reinforced collecting units, a positive collecting pipe bus, a negative collecting pipe bus, a current measurement component, an over-current protection component, and an ice melting short-circuit disconnecting link. Positive output terminals of all aluminium cable steel-reinforced collecting units are connected with an input terminal of the positive collecting pipe bus; and negative output terminals of all aluminium cable steel-reinforced collecting units are connected with an input terminal of the negative collecting pipe bus. An output terminal of the positive collecting pipe bus is connected with an input terminal of the ice melting short-circuit disconnecting link by the current measurement component and the over-current protection component; and output terminals of the current measurement component and the over-current protection component are connected with the input terminal of the ice melting short-circuit disconnecting link by a disconnecting link protection unit. And output terminals of the negative collecting pipe bus and the ice melting short-circuit disconnecting link are respectively connected with an ice melting load. According to the system, the output current is heavy; and problems of multi-branch currents, current collecting, short circuit, insulation, and heat radiation and the like during the extra-high-voltage direct-current ice melting apparatus development can be solved.
Description
Technical field
The present invention relates to electrical engineering technical field, the electric current being specifically related to a kind of extra-high voltage direct-current deicing device confluxes and shorting system.
Background technology
Extra-high voltage direct-current deicing device is that UHV transmission line reply ice damage provides effective ice-melt means, but extra-high voltage direct-current deicing device is because output voltage is high, electric current is large, it exports direct current and is realized by the rectification in parallel of multiple stage rectifier, and the electric current of extra-high voltage direct-current deicing device conflux with shorting system comparatively major network direct current ice melting system distinguish larger.Therefore, the electric current carrying out extra-high voltage direct-current deicing device confluxes and to study with shorting system, has important theory and technology and is worth.Home and abroad minority colleges and universities and R&D institution have carried out more research to major network DC de-icing device, but installed capacity is little, output current is little, electric current is confluxed lower with shorting system requirement, the electric current being suitable for extra-high voltage direct-current deicing device is confluxed and does not carry out effective research work with shorting system.Compared with major network direct current ice melting system, the electric current of extra-high voltage direct-current deicing device confluxes and has following difficult point with shorting system: difficult point one, electric current convergence system can realize exporting after multiple stage rectifier high voltage direct current is confluxed, and has multiple current input branch road, the large and insulating requirements high feature of output current; Difficult point two, shorting system adopts ice-melt short circuit disconnecting link to realize, and because ice melting current is large, disconnecting link needs to be equipped with special disconnecting link protective device, prevents disconnecting link from crossing cause thermal damage.Therefore, high pressure can be realized in the urgent need to carrying out, the electric current of High-current output confluxes and to study with shorting system, Problems existing in effective solution extra-high voltage direct-current ice melting system development, for the structural design of extra-high voltage direct-current ice melting system provides effective guidance with final development.
Summary of the invention
The technical problem to be solved in the present invention is the deficiency overcoming prior art existence, there is provided a kind of output current large, can effectively solve in the development of extra-high voltage direct-current deicing device there is multiple-limb electric current, conflux, short circuit, the problem such as insulation and heat radiation the electric current of extra-high voltage direct-current deicing device conflux and shorting system.
For solving the problems of the technologies described above, the present invention by the following technical solutions:
A kind of electric current of extra-high voltage direct-current deicing device confluxes and shorting system, comprise some steel reinforced aluminium conductor joining unit, positive pole collecting pipe is female, negative pole collecting pipe is female, current measuring members, overcurrent protection parts and ice-melt short circuit disconnecting link, the cathode output end of each steel reinforced aluminium conductor joining unit is connected with the input of positive pole collecting pipe mother, the cathode output end of each steel reinforced aluminium conductor joining unit is connected with the input of negative pole collecting pipe mother, the output of described positive pole collecting pipe mother is connected with the input of overcurrent protection parts with ice-melt short circuit disconnecting link by current measuring members successively, described current measuring members is also connected by the input of a disconnecting link protective device with ice-melt short circuit disconnecting link with the output of overcurrent protection parts, described negative pole collecting pipe output that is female and ice-melt short circuit disconnecting link connects ice-melt load respectively.
Above-mentioned electric current confluxes and shorting system, and preferably, described positive pole collecting pipe mother and negative pole collecting pipe mother are that HLGM-n × 2000A type collecting pipe is female.
Above-mentioned electric current confluxes and shorting system, and preferably, described current measuring members is DLCL-n × 2000A type current measuring members.
Above-mentioned electric current confluxes and shorting system, and preferably, described overcurrent protection parts are GLBH-n × 2000A type overcurrent protection parts.
Above-mentioned electric current confluxes and shorting system, and preferably, described disconnecting link protective device is DZBH-n × 2000A type disconnecting link protective device.
Compared with prior art, the invention has the advantages that:
1, can realize exporting after multiple stage rectifier DC electric current confluxes, solve a difficult problem for ultra high voltage deicing device High-current output;
2, effectively can solve extra-high voltage direct-current ice melting system short circuit requirement, utilize and be furnished with the ice-melt short circuit disconnecting link system of disconnecting link protective device, can be that extra-high voltage direct-current ice-melt provides efficiently, reliable short-circuit loop;
3, can system solve in the development of extra-high voltage direct-current deicing device there is multiple-limb electric current, conflux, short circuit, the problem such as insulation and heat radiation, for development extra-high voltage direct-current ice melting system provides a kind of reliable, economic, effective electric current to conflux and shorting system.
Accompanying drawing explanation
Fig. 1 is that the electric current of extra-high voltage direct-current deicing device of the present invention confluxes and the schematic diagram of shorting system.
Marginal data:
1, steel reinforced aluminium conductor joining unit; 2, positive pole collecting pipe is female; 3, negative pole collecting pipe is female; 4, current measuring members; 5, overcurrent protection parts; 6, ice-melt short circuit disconnecting link; 7, disconnecting link protective device.
Embodiment
Below in conjunction with the drawings and specific embodiments, the present invention is described in further detail.
As shown in Figure 1, the electric current of extra-high voltage direct-current deicing device of the present invention confluxes and shorting system, comprise multiple steel reinforced aluminium conductor joining unit 1, positive pole collecting pipe mother 2, negative pole collecting pipe mother 3, current measuring members 4, overcurrent protection parts 5 and ice-melt short circuit disconnecting link 6, the cathode output end of each steel reinforced aluminium conductor joining unit 1 is connected with the input of positive pole collecting pipe mother 2, the cathode output end of each steel reinforced aluminium conductor joining unit 1 is connected with the input of negative pole collecting pipe mother 3, the output of positive pole collecting pipe mother 2 is connected with the input of ice-melt short circuit disconnecting link 6 with overcurrent protection parts 5 by current measuring members 4 successively, and (also namely the output of positive pole collecting pipe mother 2 is connected with the input of current measuring members 4, the output of current measuring members 4 is connected with the input of overcurrent protection parts 5, the output of overcurrent protection parts 5 is connected with the input of ice-melt short circuit disconnecting link 6), current measuring members 4 is also connected by the input of a disconnecting link protective device 7 with ice-melt short circuit disconnecting link 6 with the output of overcurrent protection parts 5, the output of negative pole collecting pipe female 3 and ice-melt short circuit disconnecting link 6 connects ice-melt load (by ice-melt extra high voltage line) respectively.In other embodiments, the quantity of steel reinforced aluminium conductor joining unit 1 also can be more than two or four.
In the present embodiment, positive pole collecting pipe female 2 and negative pole collecting pipe female 3 adopt commercially available HLGM-n × 2000A type collecting pipe female; Current measuring members 4 adopts commercially available DLCL-n × 2000A type current measuring members; Overcurrent protection parts 5 adopt commercially available GLBH-n × 2000A type overcurrent protection parts; Disconnecting link protective device 7 adopts commercially available DZBH-n × 2000A type disconnecting link protective device.Steel reinforced aluminium conductor joining unit 1 and ice-melt short circuit disconnecting link 6 adopt LGJ-2000A shaped steel core aluminum stranded wire joining unit and DLDZ-n × 2000A type short circuit disconnecting link of State Grid Corporation of China's independent development respectively.Certainly, steel reinforced aluminium conductor joining unit 1 and ice-melt short circuit disconnecting link 6 also can adopt existing other commercially available joining unit and short circuit disconnecting link.
During work, each steel reinforced aluminium conductor joining unit 1 is a corresponding rectifier respectively, the input of each steel reinforced aluminium conductor joining unit 1 is connected with the DC output end of corresponding rectifier, the positive pole output current of all steel reinforced aluminium conductor joining unit 1 confluxes by positive pole collecting pipe mother 2, the negative pole output current of all steel reinforced aluminium conductor joining unit 1 confluxes by negative pole collecting pipe mother 3, female 2 output currents of current measuring members 4 pairs of positive pole collecting pipes are measured and provide metrical information to disconnecting link protective device 7, overcurrent protection parts 5 pairs of ultra high voltage ice melting currents are measured and are provided overcurrent protection signal for disconnecting link protective device 7, ice-melt short circuit disconnecting link 6 pairs of extra high voltage lines carry out ice-melt short circuit and form ice-melt loop.
The above is only the preferred embodiment of the present invention, and protection scope of the present invention is also not only confined to above-described embodiment.For those skilled in the art, do not departing from the improvement that obtains under the technology of the present invention concept thereof and conversion also should be considered as protection scope of the present invention.
Claims (5)
1. the electric current of an extra-high voltage direct-current deicing device confluxes and shorting system, it is characterized in that: comprise some steel reinforced aluminium conductor joining unit (1), positive pole collecting pipe mother (2), negative pole collecting pipe mother (3), current measuring members (4), overcurrent protection parts (5) and ice-melt short circuit disconnecting link (6), the cathode output end of each steel reinforced aluminium conductor joining unit (1) is connected with the input of positive pole collecting pipe mother (2), the cathode output end of each steel reinforced aluminium conductor joining unit (1) is connected with the input of negative pole collecting pipe mother (3), the output of described positive pole collecting pipe mother (2) is connected with the input of overcurrent protection parts (5) with ice-melt short circuit disconnecting link (6) by current measuring members (4) successively, described current measuring members (4) is also connected with the input of ice-melt short circuit disconnecting link (6) by a disconnecting link protective device (7) with the output of overcurrent protection parts (5), the output of described negative pole collecting pipe mother (3) and ice-melt short circuit disconnecting link (6) connects ice-melt load respectively.
2. electric current according to claim 1 confluxes and shorting system, it is characterized in that: described positive pole collecting pipe mother (2) and negative pole collecting pipe mother (3) are HLGM-n × 2000A type collecting pipe mother.
3. electric current according to claim 1 confluxes and shorting system, it is characterized in that: described current measuring members (4) is DLCL-n × 2000A type current measuring members.
4. electric current according to claim 1 confluxes and shorting system, it is characterized in that: described overcurrent protection parts (5) are GLBH-n × 2000A type overcurrent protection parts.
5. electric current according to claim 1 confluxes and shorting system, it is characterized in that: described disconnecting link protective device (7) is DZBH-n × 2000A type disconnecting link protective device.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510635196.6A CN105140870A (en) | 2015-09-30 | 2015-09-30 | Current collecting and short circuit system of extra-high-voltage direct-current ice melting apparatus |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510635196.6A CN105140870A (en) | 2015-09-30 | 2015-09-30 | Current collecting and short circuit system of extra-high-voltage direct-current ice melting apparatus |
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| CN105140870A true CN105140870A (en) | 2015-12-09 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201510635196.6A Pending CN105140870A (en) | 2015-09-30 | 2015-09-30 | Current collecting and short circuit system of extra-high-voltage direct-current ice melting apparatus |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106918454A (en) * | 2017-04-14 | 2017-07-04 | 贵州电网有限责任公司电力科学研究院 | A kind of DC ice melting cooling water system branch pipe blockage detector and method |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4082962A (en) * | 1977-07-11 | 1978-04-04 | Burgsdorf Vladimir Vladimirovi | Device for melting the icing by direct current on conductors of overhead power transmission line |
| CN101877470A (en) * | 2010-03-30 | 2010-11-03 | 南方电网技术研究中心 | Direct current thawing apparatus with special rectiformer and protection method thereof |
| CN102510039A (en) * | 2011-11-09 | 2012-06-20 | 南方电网科学研究院有限责任公司 | Multifunctional direct-current ice melting automatic conversion circuit and conversion method thereof |
| CN104753014A (en) * | 2015-04-10 | 2015-07-01 | 国家电网公司 | Rectifier cooling method and system used for ultrahigh-voltage direct-current deicing device |
| CN205016973U (en) * | 2015-09-30 | 2016-02-03 | 国家电网公司 | Electric current of special high voltage direct current ice -melt device converges and short circuit system |
-
2015
- 2015-09-30 CN CN201510635196.6A patent/CN105140870A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4082962A (en) * | 1977-07-11 | 1978-04-04 | Burgsdorf Vladimir Vladimirovi | Device for melting the icing by direct current on conductors of overhead power transmission line |
| CN101877470A (en) * | 2010-03-30 | 2010-11-03 | 南方电网技术研究中心 | Direct current thawing apparatus with special rectiformer and protection method thereof |
| CN102510039A (en) * | 2011-11-09 | 2012-06-20 | 南方电网科学研究院有限责任公司 | Multifunctional direct-current ice melting automatic conversion circuit and conversion method thereof |
| CN104753014A (en) * | 2015-04-10 | 2015-07-01 | 国家电网公司 | Rectifier cooling method and system used for ultrahigh-voltage direct-current deicing device |
| CN205016973U (en) * | 2015-09-30 | 2016-02-03 | 国家电网公司 | Electric current of special high voltage direct current ice -melt device converges and short circuit system |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106918454A (en) * | 2017-04-14 | 2017-07-04 | 贵州电网有限责任公司电力科学研究院 | A kind of DC ice melting cooling water system branch pipe blockage detector and method |
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Application publication date: 20151209 |