CN201230188Y - Movable DC ice melting device for power transmission line - Google Patents
Movable DC ice melting device for power transmission line Download PDFInfo
- Publication number
- CN201230188Y CN201230188Y CNU2008200296142U CN200820029614U CN201230188Y CN 201230188 Y CN201230188 Y CN 201230188Y CN U2008200296142 U CNU2008200296142 U CN U2008200296142U CN 200820029614 U CN200820029614 U CN 200820029614U CN 201230188 Y CN201230188 Y CN 201230188Y
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- CN
- China
- Prior art keywords
- transmission line
- movable
- rectification unit
- power supply
- controlled rectification
- 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.)
- Expired - Lifetime
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Abstract
The utility model relates to a thawing device for a transmission line, disclosing a mobile direct-current thawing device for the transmission line. The thawing device comprises a car and a controllable direct-current supply arranged on the car. The output end of the controllable direct-current supply is connected with the two phase lines of the transmission line to be thawed. The other ends of the two phase lines are in short circuit.
Description
Technical field
The utility model relates to the deicing device that is used for transmission line, relates in particular to a kind of movable DC deicing device that is used for transmission line.
Background technology
Under cold, the moist in the winter time condition, meet on the sleet transmission line and will freeze, reach certain thickness, electric wire will be pulled apart, cause the outage phenomenon when freezing.At the beginning of 2008, occur in the sleet ice and snow disaster of southern china, the electric power transmission line system has been caused serious damage, cause the south electric network power supply to be interrupted, cause this area's resident living difficulty, cause heavy economic losses to society.
For the icing of transmission line, two kinds of de-icing methods are arranged generally: the one, machinery (vibrations) knocks; The 2nd, heating and melting is removed.Machinery (vibrations) knock on long transmission line, waste time and energy dangerous, the difficult operation; Heating and melting generally adopts exchange way, and power supply is selected convenient, and equipment is simple, but A.C.power loss is big, and efficient is low.
Summary of the invention
The purpose of this utility model is to provide the movable DC deicing device that is used for transmission line that a kind of loss is little, efficient is high, easy to use.
In order to achieve the above object, the utility model is achieved by the following technical solutions: a kind of movable DC deicing device that is used for transmission line, comprise automobile and be arranged on controllable direct current power supply on the automobile, the output of controllable direct current power supply is connected on two phase lines of the transmission line for the treatment of ice-melt, the other end short circuit of described two phase lines.
Described controllable direct current power supply comprises the controlled rectification unit, and the load matched device that is connected in parallel on controlled rectification unit output; Described load matched device is composed in parallel by resistance and diode, and the positive pole of diode connects the negative output terminal of controlled rectification unit, and its negative pole connects the positive output end of controlled rectification unit.
Basic functional principle of the present utility model is: under the situation of power transmission line outage, the high-voltage direct current of high pressure controlled rectifier output is linked into two phase lines of transformer station transmission line of alternation current, and next transformer station is with this two phase lines short circuit, make whole circuit become a loop, two phase lines of short circuit are equivalent to a resistive load, and self-heating melts the icing on the electric wire.
Because the utility model adopts the DC ice melting method, overcome the interchange ice-melt because of big, the inefficient problem of the loss that the line reactance capacitive effect causes; Obtain DC power supply by the controlled rectification unit, the output voltage of DC power supply, electric current can be set according to required DC ice-melting parameter is convenient; The controlled rectification unit is arranged on the automobile, can conveniently moves, do not need each transformer station all to be equipped with DC de-icing device, save transformer station's cost of investment.
Description of drawings
Below in conjunction with description of drawings and embodiment the utility model is described in further detail.
Fig. 1 is the elementary diagram of controlled rectification of the present utility model unit and transmission line.
Embodiment
As shown in Figure 1, controlled rectification unit 1 and load matched device 8 compose in parallel controllable direct current power supply.The load matched device is composed in parallel by resistance and diode, and the positive pole of diode connects the negative output terminal of controlled rectification unit, and its negative pole connects the positive output end of controlled rectification unit.Grid alternating current input controllable direct current power supply, the output high-voltage direct current.Controlled rectification unit 1 is under the situation of power transmission line outage, and on the cross streams power transmission line 7 in the anodal high-voltage switch gear 4 that inserts prime transformer station 2 of high-voltage DC power supply, the high-voltage DC power supply negative pole inserts the cross streams power transmission line 6 in the high-voltage switch gear 4 of transformer station 2.
And two-phase AC power line 6,7 other ends form a loop by high-voltage switch gear 5 short circuits of transformer station 3.Direct current is by after the AC power line of short circuit, and AC power line is melted icing by the self-resistance heating.
The controllable direct current power supply of this practicality example is 20 feet vehicle-mounted container sizes, and height does not surpass 3.5 meters less than 2.5m together with the transportation overall height, and power is 18MW, is fixed in the automobile bodies.
Claims (3)
1, a kind of movable DC deicing device that is used for transmission line, it is characterized in that, comprise automobile and be arranged on controllable direct current power supply on the automobile, the output of controllable direct current power supply is connected on two phase lines of the transmission line for the treatment of ice-melt, the other end short circuit of described two phase lines.
2, a kind of movable DC deicing device that is used for transmission line according to claim 1 is characterized in that described controllable direct current power supply comprises the controlled rectification unit, and the load matched device that is connected in parallel on controlled rectification unit output.
3, a kind of movable DC deicing device that is used for transmission line according to claim 2, it is characterized in that, described load matched device is composed in parallel by resistance and diode, the positive pole of diode connects the negative output terminal of controlled rectification unit, and its negative pole connects the positive output end of controlled rectification unit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200296142U CN201230188Y (en) | 2008-07-11 | 2008-07-11 | Movable DC ice melting device for power transmission line |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200296142U CN201230188Y (en) | 2008-07-11 | 2008-07-11 | Movable DC ice melting device for power transmission line |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201230188Y true CN201230188Y (en) | 2009-04-29 |
Family
ID=40635131
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008200296142U Expired - Lifetime CN201230188Y (en) | 2008-07-11 | 2008-07-11 | Movable DC ice melting device for power transmission line |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201230188Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106300200A (en) * | 2015-05-29 | 2017-01-04 | 国家电网公司 | A kind of removable DC de-icing device having STATCOM function concurrently and de-icing method thereof |
-
2008
- 2008-07-11 CN CNU2008200296142U patent/CN201230188Y/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106300200A (en) * | 2015-05-29 | 2017-01-04 | 国家电网公司 | A kind of removable DC de-icing device having STATCOM function concurrently and de-icing method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20090429 |
|
| CX01 | Expiry of patent term |