CN102176615A - Alternating-current (AC) de-icing method - Google Patents
Alternating-current (AC) de-icing method Download PDFInfo
- Publication number
- CN102176615A CN102176615A CN201110009070XA CN201110009070A CN102176615A CN 102176615 A CN102176615 A CN 102176615A CN 201110009070X A CN201110009070X A CN 201110009070XA CN 201110009070 A CN201110009070 A CN 201110009070A CN 102176615 A CN102176615 A CN 102176615A
- Authority
- CN
- China
- Prior art keywords
- icing
- output
- alternating current
- deicing device
- icing method
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Landscapes
- Suspension Of Electric Lines Or Cables (AREA)
Abstract
The invention discloses an alternating-current (AC) de-icing method. In the method, a de-icing device comprising a body, a wiring pile head and wire reels is utilized; one side of the de-icing device is taken as a mains side of incoming lines and the other side of the de-icing device is taken as an output low-pressure side; coils of the output side are drawn out independently, drawing heads are accessed the pile head of the device, and multi-level voltage output are obtained by a certain connection mode; the wire reels are arranged at two sides of the device, input connecting leads are wound on one side of each wire reel and output connecting leads are wound on the other side of each wire reel; after the freeze generates, the tail ends of transmission lines are shortly connected; according to the length and requirement of the transmission lines, a proper wiring mode and a voltage output gear are selected, and then the head ends of the transmission lines are connected with the output low-pressure side of the de-icing device by transition of a single-core insulation cable; and the transmission lines generate heat by the output AC so as to reach the de-icing effect. The invention has the advantages that the de-icing speed is quick, the influences on users are slight, the de-icing cost is low and the human injuries do not happen, the device is small, the weight is light, the operation is simple, the running is convenient and the device capacity is unchanged.
Description
Technical field
The present invention relates to remove the method for ice and snow on the transmission line, specifically, relate to method with the alternating current ice-melt.
Background technology
Congeal when taking place, ice and snow can be piled up on transmission line, causes transmission line and shaft tower can't bear the heavy load and breaks.This not only influences power supply safety, and the more important thing is influences industrial and agricultural production and people's lives.Large tracts of land in 2008 is congealed with regard to causing many areas to cause large-area power-cuts because of rod disconnection, loses huge.
In order to solve the problem that influences of congealing to electrical network, people have developed some and have heated the technical scheme that transmission lines make ice dissolution, the application part of Chinese patent is a lot, for example: No. 200810047959.5 " a kind of high-capacity direct current de-icing device ", number 200810031940.1 " mobile power line DC ice-melting device ", number 200910023412.6 " a kind of de-icing method of electrification railway contact net and ice melting system thereof " and No. 201010140060.5 " a kind of DC de-icing device and guard methods thereof with special rectifier transformer " etc., these patented technologies overwhelming majority adopts direct current to heat ice-melt; Adopt the technical scheme of alternating current ice-melt to yet there are no report.
Summary of the invention
The object of the present invention is to provide a kind of alternating current de-icing method, use this method to adopt the alternating current ice-melt, safeguard the security of operation of transmission line at the weather that congeals.
The alternating current de-icing method that the inventor provides, this method is to adopt a deicing device, the wire spool that install the wiring pile crown that described deicing device comprises body, install on its shell, both sides, the one side is as the incoming power side of deicing device, and its opposite side is as the output low-pressure side of deicing device; The coil of this outlet side adopts multitap form to extract out separately respectively, and tap is the pile crown of access device respectively, obtains the voltage output of multiple grade by certain connected mode; The wire spool that install the device both sides, a side twine input and connect lead, and opposite side twines output and connects lead, form independently coiling group respectively; Congeal take place after with the terminal short circuit of transmission line; According to different Route Length and line parameter circuit value requirement, the mode of connection and the voltage selecting to be fit to are exported shelves, and the output low-pressure side of transmission line head end by transition of single core insulation cable and deicing device is connected again; The output AC electricity makes transmission line produce heat, with ice dissolution.
Above-mentioned deicing device adopts retired transformer to convert, or the device of producing according to said structure.
The tap of above-mentioned outlet side is 3 groups; Above-mentioned certain connected mode is " Y " and " Δ " and incomplete a kind of in the connected mode of star.
The wire spool of the above-mentioned lead that is intertwined and connected is 4, and one at input side, and 3 at outlet side.
Be furnished with incoming power binding post and output low tension terminal on the above-mentioned pile crown.
The inventor points out: in order to reduce the volume of deicing device, be convenient to dismounting and transportation, used transformer has been removed the radiator and the immersion oil device of original both sides, and reduces the conservator volume.
The operation principle of alternating current de-icing method is: (1) is according to Joule law Q=I
2The heating principle of Rt adds electric current I on transmission line, can produce heat Q; (2) determine line impedance Z according to the lead parameter; (3) with this interchange deicing device as power supply; (4) determine time t according to ambient temperature, wind speed, icing situation, loading current size.
Rationale of the present invention is: (1) determines the selection of novel deicing device capacity voltage gear according to different conductor model and parameter; (2) considering according to voltage drop, is that example is calculated with the transmission line of 10kV LGJ-185: the voltage of 1V/3m and circuit are carried, and voltage gear is selected the 3300V shelves, and then can to melt length be 3 * 3300=9.9km to the molten ice length of LGJ-185 transmission line; (3) the transmission line ice melting current calculates according to I=U/Z, selects current output terminal in conjunction with the rated carrying current of novel deicing device and transmission line; (4) according to the voltage drop principle
Can calculate and need melt transmission line how long, voltage drop is by vertical component
With horizontal component
Form; Ice melting current I
1＜circuit rated carrying current I
2＜novel deicing device rated current I
3
The rated current of for example several different model leads is as shown in the table:
| Sequence number | The circuit model | Line length (km) | Rated carrying current (A) | |
| 1 | LGJ-95 | 20 | ?335 | |
| 2 | LGJ-120 | 15 | ?380 | |
| 3 | LGJ-150 | 12 | ?445 | |
| 4 | LGJ-185 | 10 | ?515 |
The DC ice-melting length and the rated current of other model can be by that analogy.
Alternating current de-icing method of the present invention has the following advantages: 1. ice-melt speed is fast, the icing in the job area all can be melted in 30 minutes behind the loading current, and the powerline ice-covering in the 20km is melted; 2. little to customer impact, the single supply circuit is carried out at dead of night, reduce influence after the responsible consumer overall arrangement to the user; 3. reduced ice-melt cost and security risk, the manpower and materials of input are few, avoid the personal injury of artificial deicing; 4. device volume is little, in light weight, and is simple to operate, is convenient to transhipment; 5. it is constant to install the maintenance capacity, and possesses in ambient temperature-5 ℃ and when following, and the ability of constant load 50% operation more than 30 minutes exceeds the quata.
Description of drawings
Fig. 1 is the structural representation of the used alternating current deicing device of the inventive method, and Fig. 2 is the device rearview, and Fig. 3 is the inner winding connection schematic diagram of device, and Fig. 4 is the device terminals floor plan, the wiring schematic diagram when Fig. 5 is ice-melt.1 is device body among the figure, and 2 is binding post, and 3 is the incoming power binding post, and 4 are the output low tension terminal, and 5 is wire spool.
Embodiment
Guizhou Province Tongren power supply administration has used the inventive method on January 3rd, 2011 at Wanshan Special Region, at first use a retired already 35kV transformer as device body, the wiring pile crown is installed, with the incoming power side of its former low-pressure side repacking as deicing device on its shell; With the output low-pressure side of its former high-pressure side repacking as deicing device, and adopt multitap form to extract out separately respectively the coil of this outlet side, tap is the pile crown of access device respectively, obtains required voltage output by a kind of connected mode in the connected mode of " Y " and " Δ " and incomplete star; Simultaneously in the both sides of device 4 of wire spools are housed, one at input side, twines input and connects lead; 3 twine output and connect lead at outlet side in addition, form independently coiling group respectively; Congeal take place after with the terminal short circuit ground connection of transmission line; According to different Route Length and circuit requirement, the mode of connection and the voltage selecting to be fit to are exported shelves, and the output low-pressure side of transmission line head end by transition of single core insulation cable and deicing device is connected again; The alternating current of output makes transmission line produce heat with ice dissolution, reaches the purpose of deicing.
Be furnished with 3 incoming power binding posts and 12 output low tension terminals on the pile crown.
On January 2nd, 2011 is to January 6, adopts the alternating current deicing device, melts 10kV powerline ice-covering 86.5km altogether, makes the Wanshan Special Region degree of safety cross the first round weather that congeals.
The wire spool that install the wiring pile crown that deicing device according to said structure production comprises body, install on its shell, both sides, the one side is as the incoming power side of deicing device, and its opposite side is as the output low-pressure side of deicing device.All the other are with embodiment 1.
Adopt this alternating current deicing device, melt 10kV powerline ice-covering 50km altogether.
Claims (5)
1. alternating current de-icing method, it is characterized in that adopting a deicing device, the wire spool that install the wiring pile crown that described deicing device comprises body, install on its shell, both sides, the one side is as the incoming power side of deicing device, and its opposite side is as the output low-pressure side of deicing device; The coil of this outlet side adopts multitap form to extract out separately respectively, and tap is the pile crown of access device respectively, obtains the voltage output of multiple grade by certain connected mode; The wire spool that install the device both sides, a side twine input and connect lead, and opposite side twines output and connects lead, form independently coiling group respectively; Congeal take place after with the terminal short circuit of transmission line, again according to different Route Length and circuit requirement, the mode of connection and the voltage selecting to be fit to are exported shelves, and the output low-pressure side of transmission line head end by transition of single core insulation cable and deicing device is connected; The output AC electricity makes transmission line produce heat, with ice dissolution.
2. alternating current de-icing method according to claim 1 is characterized in that described deicing device, adopts retired transformer to convert, or the device of producing according to said structure.
3. alternating current de-icing method according to claim 1, the tap that it is characterized in that described outlet side is 3 groups; Described certain connected mode is " Y " and " Δ " and incomplete a kind of in the connected mode of star.
4. alternating current de-icing method according to claim 1, the wire spool that it is characterized in that the described lead that is intertwined and connected is 4, and one at input side, and 3 at outlet side.
5. alternating current de-icing method according to claim 1 is characterized in that being furnished with on the described terminal incoming power binding post and output low tension terminal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110009070XA CN102176615A (en) | 2011-01-17 | 2011-01-17 | Alternating-current (AC) de-icing method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110009070XA CN102176615A (en) | 2011-01-17 | 2011-01-17 | Alternating-current (AC) de-icing method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102176615A true CN102176615A (en) | 2011-09-07 |
Family
ID=44519733
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110009070XA Pending CN102176615A (en) | 2011-01-17 | 2011-01-17 | Alternating-current (AC) de-icing method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102176615A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110556228A (en) * | 2019-07-30 | 2019-12-10 | 陈锦勇 | Combined transformer with anti-icing function in high and cold environment |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6433520B1 (en) * | 2001-05-29 | 2002-08-13 | Siemens Power Transmission & Distribution Inc | Dc power regulator incorporating high power ac to dc converter with controllable dc voltage and method of use |
| RU2235397C2 (en) * | 2002-04-11 | 2004-08-27 | Открытое акционерное общество "Научно-исследовательский институт по передаче электроэнергии постоянным током высокого напряжения" | Ice glaze melting apparatus |
| CN101316033A (en) * | 2008-06-11 | 2008-12-03 | 国网武汉高压研究院 | High-capacity direct current de-icing device |
| CN101546896A (en) * | 2008-03-29 | 2009-09-30 | 国网南京自动化研究院 | Ice melting method and device used by same |
-
2011
- 2011-01-17 CN CN201110009070XA patent/CN102176615A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6433520B1 (en) * | 2001-05-29 | 2002-08-13 | Siemens Power Transmission & Distribution Inc | Dc power regulator incorporating high power ac to dc converter with controllable dc voltage and method of use |
| RU2235397C2 (en) * | 2002-04-11 | 2004-08-27 | Открытое акционерное общество "Научно-исследовательский институт по передаче электроэнергии постоянным током высокого напряжения" | Ice glaze melting apparatus |
| CN101546896A (en) * | 2008-03-29 | 2009-09-30 | 国网南京自动化研究院 | Ice melting method and device used by same |
| CN101316033A (en) * | 2008-06-11 | 2008-12-03 | 国网武汉高压研究院 | High-capacity direct current de-icing device |
Non-Patent Citations (1)
| Title |
|---|
| 徐长宝等: "交流短路融冰技术研究", 《2008抗冰保电优秀论文集》, 30 June 2008 (2008-06-30) * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110556228A (en) * | 2019-07-30 | 2019-12-10 | 陈锦勇 | Combined transformer with anti-icing function in high and cold environment |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102780193B (en) | A kind of power transmission line overhead ground wire electric current de-icing method | |
| US20090250449A1 (en) | System And Method For Deicing Of Power Line Cables | |
| WO2012034124A2 (en) | System and method for deicing of power line cables | |
| CN101604833B (en) | Ground wire deicing device capable of combined use | |
| CN206225028U (en) | A kind of flexible cooling radiating of New-energy electric vehicle, temperature control charging pile cable | |
| CN101794977B (en) | Long-distance transmission line deicing method and device | |
| CN201126735Y (en) | Ice-and-snow removing conductor | |
| CN201298431Y (en) | A dry-type hollow current-limiting reactor | |
| CN102176615A (en) | Alternating-current (AC) de-icing method | |
| CN203406086U (en) | Web link type overhead low voltage cable | |
| CN203135556U (en) | Emergency power supply assembly | |
| CN102255272A (en) | Alternating-current de-icing method for transmission line based on reactive compensation of capacitor | |
| CN201985497U (en) | Alternating current ice melting device | |
| CN203689973U (en) | High-resistance steel core ice-melting lead | |
| CN103944163B (en) | A kind of compound transformer substation system | |
| CN102437542A (en) | Alternating current (AC) ice melting system for traction network of electrified railway | |
| CN202424080U (en) | Alternating-current de-icing system for traction network of electrified railway | |
| CN202308987U (en) | Automatic ice melting apparatus for high voltage power line or high voltage line lightning conductor | |
| CN201251941Y (en) | Outer layer insulating single-line insulating round-line concentric stranded wire overhead line conductor and an automatic thawing apparatus | |
| CN103457225B (en) | Based on the interchange de-icing method of flow battery | |
| CN201422170Y (en) | Transmission line being wound with electric heating wire | |
| CN206711725U (en) | A kind of combined transformer | |
| CN203365765U (en) | Layer-stranded metal heavy-load optical cable | |
| CN203839947U (en) | Substation system in composite structure | |
| CN202855398U (en) | Single-phase alternating-current cross-linking insulated cable for electrified railways |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20110907 |