CN105098691A - Overhead ground wire ice melting device - Google Patents
Overhead ground wire ice melting device Download PDFInfo
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- CN105098691A CN105098691A CN201510585573.XA CN201510585573A CN105098691A CN 105098691 A CN105098691 A CN 105098691A CN 201510585573 A CN201510585573 A CN 201510585573A CN 105098691 A CN105098691 A CN 105098691A
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- ground wire
- overhead ground
- alternating current
- rectifying device
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- 230000008018 melting Effects 0.000 title abstract 4
- 238000002844 melting Methods 0.000 title abstract 4
- 238000011084 recovery Methods 0.000 claims description 29
- 230000005611 electricity Effects 0.000 claims description 5
- 230000009466 transformation Effects 0.000 claims description 5
- 230000001276 controlling effect Effects 0.000 claims description 3
- 230000001105 regulatory effect Effects 0.000 claims description 3
- 238000010248 power generation Methods 0.000 abstract 2
- 230000005540 biological transmission Effects 0.000 description 13
- 238000000034 method Methods 0.000 description 7
- WABPQHHGFIMREM-UHFFFAOYSA-N lead(0) Chemical compound [Pb] WABPQHHGFIMREM-UHFFFAOYSA-N 0.000 description 4
- 230000005484 gravity Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 210000003205 muscle Anatomy 0.000 description 1
- 230000011218 segmentation Effects 0.000 description 1
- 238000010257 thawing Methods 0.000 description 1
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Abstract
The invention discloses an overhead ground wire ice melting device, comprising a mobile power generation device for outputting an alternating current to a rectifying device, and the rectifying device for receiving the alternating current output by the mobile power generation device, converting the alternating current into a direct current, and outputting the direct current through a cable to an ice covered overhead ground wire so as to melt the ice on the overhead ground wire. Through adoption of the overhead ground wire ice melting device, the problem in the prior art that it is difficult to provide power for the ice melting device is solved, and the ice on the ice covered overhead ground wire can be melted simply and effectively.
Description
Technical field
The present invention relates to Maintenance of Electric Transmission Line technical field, particularly relate to a kind of overhead ground wire deicing device.
Background technology
Due to environmental pollution, the frequency causing global extreme weather to occur is more and more higher, and transmission line suffers the threat of natural calamity increasing, wherein, threatens maximum in various natural calamity with ice damage to transmission line.Powerline ice-covering will have a strong impact on the safe operation of network system, gently ice sudden strain of a muscle accident then occur, and heavy then generation lead wire and earth wire ruptures, shaft tower collapse accident.
Powerline ice-covering comprises wire icing and overhead ground wire ice coverage.Wherein, overhead ground wire ice coverage is mainly divided into two classes to the harm that transmission line causes:
The first, there is disconnected stock, broken string in overhead ground wire under the effect of ice load.If ice load has exceeded the mechanical strength of overhead ground wire, overhead ground wire just there will be disconnected stock, broken string.The ground wire that fractures may be unsettled or directly ride on transmission line, easily causes transmission line to ground wire electric discharge or direct short-circuit fault, makes transmission line cannot normal transmission.In addition, the broken string of overhead ground wire also can cause transmission line mechanical system unbalance, hides some dangers for for shaft tower tilts even to collapse.
The second, overhead ground wire sag under the Action of Gravity Field of ice load is too low.Due to the Action of Gravity Field of ice load, overhead ground wire is by than low without sag during icing, and the degree that sag reduces depends on the gravity of ice load and the modulus of elasticity of overhead ground wire itself.Sag is excessive, adds the aerodynamic characteristics that ice coating wire is special, easily causes lead wire and earth wire to be waved, and thus adds the risk of discharging between lead wire and earth wire.In addition, after ice-melt implemented by wire, wire recovers normal sag because of the release of ice load, and ground wire is owing to cannot implement deicing, and the distance between itself and wire may be less than safe distance, and this will cause the electric discharge between lead wire and earth wire even directly to be discharged.
Current overhead ground wire de-icing method makes all overhead ground wire insulation against ground, when after overhead ground wire ice coverage, directly on overhead ground wire, applies alternating voltage, utilizes the principle of Joule heat that overhead ground wire is generated heat, thus reach the object of ice-melt.But the method is difficult to get power supply in the mountain area of transmission line segmentation and transmission line multipoint earthing, and constructional difficulties is large in severe cold weather, and therefore the method has larger limitation.
Therefore, how simple and effective to carry out ice-melt to overhead ground wire be the problem that those skilled in the art need to solve at present.
Summary of the invention
The object of this invention is to provide a kind of overhead ground wire deicing device, simple and effectively can carry out ice-melt to icing overhead ground wire.
For solving the problems of the technologies described above, the invention provides a kind of overhead ground wire deicing device, comprising:
Removable Blast Furnace Top Gas Recovery Turbine Unit (TRT), for output AC electricity to rectifying device;
Described rectifying device, for receiving the described alternating current that described removable Blast Furnace Top Gas Recovery Turbine Unit (TRT) exports, and being converted to direct current by described alternating current, exporting described direct current to icing overhead ground wire, carry out ice-melt to described icing overhead ground wire by cable.
Preferably, described removable Blast Furnace Top Gas Recovery Turbine Unit (TRT) is generator car.
Preferably, also comprise:
Transformer, for receiving the described alternating current that described removable Blast Furnace Top Gas Recovery Turbine Unit (TRT) exports, and by after described alternating current boosting, exports the described alternating current after boosting to described rectifying device.
Preferably, the transformation ratio of described transformer is 1:2.
Preferably, also comprise:
Control device, for controlling the thyristor valve angle in described rectifying device, the size of the described galvanic current value regulating described rectifying device to export, simultaneously described rectifying device overcurrent, overvoltage, temperature is too high and described thyristor breaks down time, cut off rapidly described rectifying device power supply and also give the alarm.
Preferably, the scope of described galvanic current value is 50-400A.
Preferably, described alternating current is 380V three-phase alternating current.
Preferably, described rectifying device is 6 impulse commutation devices.
Preferably, the length of described cable is 300 meters.
The invention provides a kind of overhead ground wire deicing device, comprise removable Blast Furnace Top Gas Recovery Turbine Unit (TRT), rectifying device, removable Blast Furnace Top Gas Recovery Turbine Unit (TRT) is that whole device is powered, output AC electricity is to rectifying device, the alternating current of input is converted to direct current by cable by rectifying device, and exports icing overhead ground wire to, is added in by direct voltage on two icing overhead ground wires, by making icing overhead ground wire produce Joule heat, make the ice-out on icing overhead ground wire.
Device provided by the invention adopts removable Blast Furnace Top Gas Recovery Turbine Unit (TRT) to power, and because removable Blast Furnace Top Gas Recovery Turbine Unit (TRT) can at the local work away from transformer station, therefore solves current overhead ground wire deicing device and to power difficult problem; And rectifying device volume is little, lightweight, can transport with removable Blast Furnace Top Gas Recovery Turbine Unit (TRT), achieve the object of transmission line ice-melt completely, therefore device provided by the invention simple and effectively can carry out ice-melt to icing overhead ground wire.
Accompanying drawing explanation
In order to be illustrated more clearly in the technical scheme in the embodiment of the present invention, be briefly described to the accompanying drawing used required in prior art and embodiment below, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 is the structural representation of a kind of overhead ground wire deicing device provided by the invention.
Embodiment
Core of the present invention is to provide a kind of overhead ground wire deicing device, simple and effectively can carry out ice-melt to icing overhead ground wire.
For making the object of the embodiment of the present invention, technical scheme and advantage clearly, below in conjunction with the accompanying drawing in the embodiment of the present invention, technical scheme in the embodiment of the present invention is clearly and completely described, obviously, described embodiment is the present invention's part embodiment, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, belong to the scope of protection of the invention.
Shown in Figure 1, Fig. 1 is the structural representation of a kind of overhead ground wire deicing device provided by the invention, and this overhead ground wire deicing device comprises:
Removable Blast Furnace Top Gas Recovery Turbine Unit (TRT) 101, for output AC electricity to rectifying device 102;
As preferably, removable Blast Furnace Top Gas Recovery Turbine Unit (TRT) 101 is here generator car.Certainly, the present invention does not limit this, as long as can realize dislocation generation destination device all within protection scope of the present invention.
As preferably, alternating current is here 380V three-phase alternating current.Certainly, also can select the alternating current of suitable voltage in real work as the case may be, the concrete magnitude of voltage of the present invention to alternating current does not limit.
Rectifying device 102, for receiving the alternating current that removable Blast Furnace Top Gas Recovery Turbine Unit (TRT) 101 exports, and being converted to direct current by alternating current, exporting direct current to icing overhead ground wire, carry out ice-melt to icing overhead ground wire by cable.
Wherein, rectifying device 102 is here 6 impulse commutation devices.
As preferably, the length of cable is here 300 meters, improve removable Blast Furnace Top Gas Recovery Turbine Unit (TRT) 101 to the ice-melt scope of icing overhead ground wire will carrying out ice-melt, and need not the removable Blast Furnace Top Gas Recovery Turbine Unit (TRT) 101 of movement back and forth, improve the ice-melt efficiency of removable Blast Furnace Top Gas Recovery Turbine Unit (TRT) 101.Certainly, the length of cable also can be other numerical value, and staff can determine according to actual conditions, and the present invention is not particularly limited to this.
As preferably, also comprise:
Transformer 103, for receiving the alternating current that removable Blast Furnace Top Gas Recovery Turbine Unit (TRT) 101 exports, and after being boosted by alternating current, exports the alternating current after boosting to rectifying device 102.
Wherein, the transformation ratio of transformer 103 is here 1:2.
In addition, again export rectifying device 102 after the alternating current boosting removable Blast Furnace Top Gas Recovery Turbine Unit (TRT) 101 exported here, the Joule heat that icing overhead ground wire produces can be increased, accelerate the thawing of the ice on icing overhead ground wire.
In addition, the selection of the transformation ratio of transformer 103 is here by wire diameter, the length of icing overhead ground wire, and the capacity of removable Blast Furnace Top Gas Recovery Turbine Unit (TRT) 101 decides.The concrete ratio of the present invention to the transformation ratio of transformer 103 is not particularly limited to.
Be understandable that, removable Blast Furnace Top Gas Recovery Turbine Unit (TRT) 101 is connected with the primary side of transformer 103, and the secondary side of transformer 103 is connected with the AC input of rectifying device 102, and the DC side output of rectifying device 102 is connected with icing overhead ground wire.Also be, the three-phase alternating current that removable Blast Furnace Top Gas Recovery Turbine Unit (TRT) 101 exports boosts through transformer 103, alternating current after boosting through rectifying device 102 (this rectifying device 102 is controllable rectifying device) rectification be direct voltage U, direct voltage U is added between two icing overhead ground wires, icing overhead ground wire will produce Joule heat, Q=I
2r, makes the ice-out above icing overhead ground wire.
As preferably, also comprise:
Control device 104, for controlling the thyristor valve angle in rectifying device 102, the size of the galvanic current value regulating rectifying device 102 to export, simultaneously rectifying device 102 overcurrent, overvoltage, temperature is too high and thyristor breaks down time, cut off rapidly rectifying device 102 power supply and also give the alarm.
In addition, the scope of galvanic current value is here 50-400A (comprising 50A and 400A), and such as current value can be 100A.Certainly, the numerical value of the present invention to the galvanic current value exported does not limit, and staff can determine the scope of required galvanic current value voluntarily according to actual conditions.
The invention provides a kind of overhead ground wire deicing device, comprise removable Blast Furnace Top Gas Recovery Turbine Unit (TRT), rectifying device, removable Blast Furnace Top Gas Recovery Turbine Unit (TRT) is that whole device is powered, output AC electricity is to rectifying device, the alternating current of input is converted to direct current by cable by rectifying device, and exports icing overhead ground wire to, is added in by direct voltage on two icing overhead ground wires, by making icing overhead ground wire produce Joule heat, make the ice-out on icing overhead ground wire.
Device provided by the invention adopts removable Blast Furnace Top Gas Recovery Turbine Unit (TRT) to power, and because removable Blast Furnace Top Gas Recovery Turbine Unit (TRT) can at the local work away from transformer station, therefore solves current overhead ground wire deicing device and to power difficult problem; And rectifying device volume is little, lightweight, can transport with removable Blast Furnace Top Gas Recovery Turbine Unit (TRT), achieve the object of transmission line ice-melt completely, therefore device provided by the invention simple and effectively can carry out ice-melt to icing overhead ground wire.
It should be noted that, in this manual, term " comprises ", " comprising " or its any other variant are intended to contain comprising of nonexcludability, thus make to comprise the process of a series of key element, method, article or equipment and not only comprise those key elements, but also comprise other key elements clearly do not listed, or also comprise by the intrinsic key element of this process, method, article or equipment.
To the above-mentioned explanation of the disclosed embodiments, professional and technical personnel in the field are realized or uses the present invention.To be apparent for those skilled in the art to the multiple amendment of these embodiments, General Principle as defined herein can without departing from the spirit or scope of the present invention, realize in other embodiments.Therefore, the present invention can not be restricted to these embodiments shown in this article, but will meet the widest scope consistent with principle disclosed herein and features of novelty.
Claims (9)
1. an overhead ground wire deicing device, is characterized in that, comprising:
Removable Blast Furnace Top Gas Recovery Turbine Unit (TRT), for output AC electricity to rectifying device;
Described rectifying device, for receiving the described alternating current that described removable Blast Furnace Top Gas Recovery Turbine Unit (TRT) exports, and being converted to direct current by described alternating current, exporting described direct current to icing overhead ground wire, carry out ice-melt to described icing overhead ground wire by cable.
2. deicing device according to claim 1, is characterized in that, described removable Blast Furnace Top Gas Recovery Turbine Unit (TRT) is generator car.
3. deicing device according to claim 1, is characterized in that, also comprises:
Transformer, for receiving the described alternating current that described removable Blast Furnace Top Gas Recovery Turbine Unit (TRT) exports, and by after described alternating current boosting, exports the described alternating current after boosting to described rectifying device.
4. deicing device according to claim 3, is characterized in that, the transformation ratio of described transformer is 1:2.
5. deicing device according to claim 1, is characterized in that, also comprises:
Control device, for controlling the thyristor valve angle in described rectifying device, the size of the described galvanic current value regulating described rectifying device to export, simultaneously described rectifying device overcurrent, overvoltage, temperature is too high and described thyristor breaks down time, cut off rapidly described rectifying device power supply and also give the alarm.
6. deicing device according to claim 5, is characterized in that, the scope of described galvanic current value is 50-400A.
7. deicing device according to claim 1, is characterized in that, described alternating current is 380V three-phase alternating current.
8. deicing device according to claim 1, is characterized in that, described rectifying device is 6 impulse commutation devices.
9. deicing device according to claim 1, is characterized in that, the length of described cable is 300 meters.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510585573.XA CN105098691A (en) | 2015-09-15 | 2015-09-15 | Overhead ground wire ice melting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510585573.XA CN105098691A (en) | 2015-09-15 | 2015-09-15 | Overhead ground wire ice melting device |
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| Publication Number | Publication Date |
|---|---|
| CN105098691A true CN105098691A (en) | 2015-11-25 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510585573.XA Pending CN105098691A (en) | 2015-09-15 | 2015-09-15 | Overhead ground wire ice melting device |
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| CN (1) | CN105098691A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108683147A (en) * | 2018-06-22 | 2018-10-19 | 国网湖南省电力有限公司 | Portable rural distribution deicing device based on electromechanical separated structure |
| CN111082385A (en) * | 2019-12-13 | 2020-04-28 | 国网北京市电力公司 | Line ice melting method, current control method and device |
-
2015
- 2015-09-15 CN CN201510585573.XA patent/CN105098691A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108683147A (en) * | 2018-06-22 | 2018-10-19 | 国网湖南省电力有限公司 | Portable rural distribution deicing device based on electromechanical separated structure |
| CN111082385A (en) * | 2019-12-13 | 2020-04-28 | 国网北京市电力公司 | Line ice melting method, current control method and device |
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Application publication date: 20151125 |