CN101847856A - Power transmission line direct current ice melting device based on twelve pulse wave uncontrollable rectification - Google Patents
Power transmission line direct current ice melting device based on twelve pulse wave uncontrollable rectification Download PDFInfo
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- CN101847856A CN101847856A CN201010171522A CN201010171522A CN101847856A CN 101847856 A CN101847856 A CN 101847856A CN 201010171522 A CN201010171522 A CN 201010171522A CN 201010171522 A CN201010171522 A CN 201010171522A CN 101847856 A CN101847856 A CN 101847856A
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Abstract
The invention discloses a power transmission line direct current ice melting device based on twelve pulse wave uncontrollable rectification, comprising a rectifier transformer (1), a twelve pulse wave rectifier (2), a series-parallel disconnecting link (3), an induction voltage inhibitor (4) and a combination disconnecting link (5), wherein the output end of the rectifier transformer (1) is connected with the input end of the twelve pulse wave rectifier (2), the output end of the twelve pulse wave rectifier (2) is connected with the input end of the series-parallel disconnecting link (3), and the output end of the series-parallel disconnecting link (3) and the output end of the induction voltage inhibitor (4) are electrically connected in parallel with the input end of the combination disconnecting link (5). The device can be used for ice melting of a 500kV line and also ice melting of a 220kV line to enhance the application range of direct current ice melting, has the advantages of little production investment, small occupied area, high performance price ratio, simple operation and time, labor and expense saving.
Description
Technical field
The invention belongs to the electrical engineering technical field, relate in particular to a kind of power line DC ice-melting device based on the uncontrollable rectification of 12 pulsating wave.
Background technology
In recent years, the accident that causes device damage or initiation ice to dodge because of power transmission and transforming equipment is freezing takes place repeatedly.For example occur in the electrical network ice damage in Hunan in January, 2008, promptly cause a large amount of transmission line broken strings of falling the tower, billions of yuans of direct economic losses, and had a strong impact on the safe operation of electrical network and the masses' normal life.Therefore, in time it is carried out ice-melt and handle in power transmission and transforming equipment formation icing, peel off or eliminate icing, prevent device damage or cause the ice sudden strain of a muscle, the safe operation of assurance transmission line is very necessary.Equipment is carried out in the mode of ice-melt processing, the deicing mode that transformer station adopts at present is mainly artificial deicing, and the main mode that artificial deicing is taked is to climb up equipment by the deicing personnel to carry out deicing.This mode can only be carried out deicing to charging equipment not, and execute-in-place gets up not only loaded down with trivial details but also complicated, dangerous again.
Spread all over Hunan China and economize domestic electric grid large area and suffer freezing harm 2008 Christian era, cause Three Gorges, Ge Zhou Ba send electric Hunan and the passage of transferring electricity from the west to the east inside the province in 12 500kV circuits all have a power failure.500kV cloud field, Zhuzhou transformer station is wherein just arranged, and it is very serious to cut off the power supply.500kV transformer stations such as Changsha Ai Jiachong, Xiang Tan He Ling, Yiyang recovery, Kunshan, Yueyang, Huaihua decorated archway are icing completely, makes electric network composition, safe operation be subjected to enormous impact.Especially the electric power sustainer in this zone, Wangcheng of 500kV Warsaw line, the accident that has the tower of installing electricity lines to collapse simultaneously unexpectedly takes place more.And a succession of 5 the 500kV high voltage iron towers that are inclined cross highway on the cloud line of 500kV Hunan also all collapse.Cause the multichannel electric energy to carry thus, force how tame power plant to stop production, for example just there are 2 600,000 kilowatts of units long-time " hibernation " in Xiang Tan power plant.Because existing known ice-melting mode also can't solve the ice-melt problem of 500kV transmission line,, press for a kind of novel deicing device of research, to adapt to the needs of present electrical network 500kV and following line ice-melting for guaranteeing electric power netting safe running.
Summary of the invention
The technical problem to be solved in the present invention is, at the backward situation of prior art, designs a kind of ice-melt demand that can satisfy 500kV and following transmission line, and small investment simple in structure, processing ease, DC de-icing device easy to maintenance.
Technical solution of the present invention is that a kind of power line DC ice-melting device based on the uncontrollable rectification of 12 pulsating wave is provided.Referring to Fig. 1, this device is connected to form by rectifier transformer 1,12 pulsating wave rectifier 2, connection in series-parallel disconnecting link 3, induced voltage suppressor 4, combination disconnecting link 5.The output electricity of wherein said rectifier transformer 1 connects the input of described 12 pulsating wave rectifier 2.The output electricity of described 12 pulsating wave rectifier 2 connects the input of described connection in series-parallel disconnecting link 3.The output of described connection in series-parallel disconnecting link 3 and the output of described induced voltage suppressor 4 electricity in parallel connect the input of described combination disconnecting link 5.
Operation principle of the present invention is: when being worked by the above a kind of like this power line DC ice-melting device based on the uncontrollable rectification of 12 pulsating wave that constitutes, as shown in Figure 1, can provide two-way to differ 30 ° voltage after the 20kV AC power step-down of its rectifier transformer 1 with input to 12 pulsating wave rectifier 2.This 12 pulsating wave rectifier 2 is converted to the alternating current of importing direct current and forms the two-way direct current and exports connection in series-parallel disconnecting link 3 to then, is switched the serial or parallel connection of the two-way direct current output that realizes 12 pulsating wave rectifiers 2 again by this connection in series-parallel disconnecting link 3.The direct current that 5 serial or parallel connections that 3 switchings of connection in series-parallel disconnecting link are come of combination disconnecting link are imported is exported to the peripheral hardware three-phase line to be used for realizing the DC ice melting of circuit.。With the induced voltage suppressor 4 that connection in series-parallel disconnecting link 3 electricity in parallel connect here then is to be used to suppress the influence of common-tower double-return line influence voltage to 12 pulsating wave rectifier 2.
The invention has the beneficial effects as follows:
1), can be used for the ice-melt of 500kV circuit, also can be used for the ice-melt of 220kV circuit, improved the scope of application of DC ice melting;
2), the production less investment, the device area occupied little, cost performance is higher;
3), ice-melt is simple to operate, save time, laborsaving, cut down expenses;
4), this device adopts air-cooled design so safeguard very simple.
Description of drawings
Fig. 1 is the structural representation of a specific embodiment of the present invention, is denoted as among the figure:
The 1-rectifier transformer,
2-12 pulsating wave rectifier,
3-connection in series-parallel disconnecting link,
The 4-induced voltage suppressor,
5-makes up disconnecting link.
Embodiment
Embodiment: this embodiment of the invention based on the power line DC ice-melting device of the uncontrollable rectification of 12 pulsating wave as shown in Figure 1, the ZSS-16000/20 type 17850kVA rectifier transformer that its rectifier transformer 1 adopts electric branch company of Chinese Hengyang Transformer Co., Ltd., Tebian Electric Co. to produce.Its 12 pulsating wave rectifier 2 adopts Hunan China to economize ZYAF-2 * (2000/4000) type 17.6MW 12 pulsating wave rectifier that the pure Power Tech Corp. Inc. of remittance produces.The GN22-12/2500 type that its connection in series-parallel disconnecting link 3 adopts Hunan China province Changsha Electrical Equipment Switch Co., Ltd. to produce, 2500A, the DZG-2000/5 type resistance value that 10kV disconnecting link, its induced voltage suppressor 4 adopt Hunan China to economize the production of the pure Power Tech Corp. Inc. of remittance is the induced voltage suppressor of 2000 Ω.And the GN22-12/5000 type that its combination disconnecting link 5 adopts Hunan China province Changsha Electrical Equipment Switch Co., Ltd. to produce, 5000A, 10kV disconnecting link.Above-mentioned rectifier transformer 1,12 pulsating wave rectifier 2, connection in series-parallel disconnecting link 3, induced voltage suppressor 4, combination disconnecting link 5 connect by above-mentioned technical solution, are about to the input that the output electricity of rectifier transformer 1 wherein connects 12 pulsating wave rectifier 2.The output electricity of 12 pulsating wave rectifier 2 connects the input of connection in series-parallel disconnecting link 3.The output of connection in series-parallel disconnecting link 3 connects the input that makes up disconnecting link 5 with the output of induced voltage suppressor 4 electricity in parallel.
By the above power line DC ice-melting device based on the uncontrollable rectification of 12 pulsating wave of the present invention that constitutes, proving effect is good after trying out, and is esy to use, safe and reliable, reaches designing requirement fully.
Claims (1)
1. power line DC ice-melting device based on the uncontrollable rectification of 12 pulsating wave, it is characterized in that, it is by rectifier transformer (1), 12 pulsating wave rectifier (2), connection in series-parallel disconnecting link (3), induced voltage suppressor (4), combination disconnecting link (5) connects to form, the output electricity of wherein said rectifier transformer (1) connects the input of described 12 pulsating wave rectifier (2), the output electricity of described 12 pulsating wave rectifier (2) connects the input of described connection in series-parallel disconnecting link (3), and the output of described connection in series-parallel disconnecting link (3) and the output electricity in parallel of described induced voltage suppressor (4) connect the input of described combination disconnecting link (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010171522A CN101847856A (en) | 2010-05-13 | 2010-05-13 | Power transmission line direct current ice melting device based on twelve pulse wave uncontrollable rectification |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010171522A CN101847856A (en) | 2010-05-13 | 2010-05-13 | Power transmission line direct current ice melting device based on twelve pulse wave uncontrollable rectification |
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| CN101847856A true CN101847856A (en) | 2010-09-29 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201010171522A Pending CN101847856A (en) | 2010-05-13 | 2010-05-13 | Power transmission line direct current ice melting device based on twelve pulse wave uncontrollable rectification |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102664379A (en) * | 2012-06-01 | 2012-09-12 | 湖南省电力公司科学研究院 | Equivalent 24 pulse wave non-control rectification DC thawing apparatus |
| CN102680840A (en) * | 2012-06-01 | 2012-09-19 | 湖南省电力公司科学研究院 | Voltage continuously adjustable no-load test device for ice melting rectifier |
| CN102707172A (en) * | 2012-06-01 | 2012-10-03 | 湖南省电力公司科学研究院 | Test device for simulating icing of power transmission line |
| CN103280755A (en) * | 2013-06-20 | 2013-09-04 | 国家电网公司 | Twelve-pulse-wave ice melting rectifier variable flow output mechanism |
| CN103311869A (en) * | 2013-06-21 | 2013-09-18 | 国家电网公司 | Ground wire ice melting device of ultra-high voltage alternating current power transmission line |
| CN104577926A (en) * | 2015-01-08 | 2015-04-29 | 国家电网公司 | Test platform capable of achieving wire and ground wire combined DC-based deicing |
| CN106159861A (en) * | 2016-07-25 | 2016-11-23 | 国网湖南省电力公司 | A kind of major network movable DC ice melting device |
| CN107196262A (en) * | 2017-07-21 | 2017-09-22 | 国网湖南省电力公司 | Wind power plant intensive style DC de-icing device topological structure |
-
2010
- 2010-05-13 CN CN201010171522A patent/CN101847856A/en active Pending
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102664379A (en) * | 2012-06-01 | 2012-09-12 | 湖南省电力公司科学研究院 | Equivalent 24 pulse wave non-control rectification DC thawing apparatus |
| CN102680840A (en) * | 2012-06-01 | 2012-09-19 | 湖南省电力公司科学研究院 | Voltage continuously adjustable no-load test device for ice melting rectifier |
| CN102707172A (en) * | 2012-06-01 | 2012-10-03 | 湖南省电力公司科学研究院 | Test device for simulating icing of power transmission line |
| CN102707172B (en) * | 2012-06-01 | 2014-10-08 | 湖南省电力公司科学研究院 | Test device for simulating icing of power transmission line |
| CN102664379B (en) * | 2012-06-01 | 2014-10-08 | 湖南省电力公司科学研究院 | Equivalent 24 pulse wave non-control rectification DC thawing apparatus |
| CN103280755A (en) * | 2013-06-20 | 2013-09-04 | 国家电网公司 | Twelve-pulse-wave ice melting rectifier variable flow output mechanism |
| CN103311869A (en) * | 2013-06-21 | 2013-09-18 | 国家电网公司 | Ground wire ice melting device of ultra-high voltage alternating current power transmission line |
| CN104577926A (en) * | 2015-01-08 | 2015-04-29 | 国家电网公司 | Test platform capable of achieving wire and ground wire combined DC-based deicing |
| CN104577926B (en) * | 2015-01-08 | 2016-11-16 | 国家电网公司 | The test platform of wire ground wire combination DC ice melting can be realized |
| CN106159861A (en) * | 2016-07-25 | 2016-11-23 | 国网湖南省电力公司 | A kind of major network movable DC ice melting device |
| CN107196262A (en) * | 2017-07-21 | 2017-09-22 | 国网湖南省电力公司 | Wind power plant intensive style DC de-icing device topological structure |
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Application publication date: 20100929 |