CN203456835U - Overhead power transmission line - Google Patents
Overhead power transmission line Download PDFInfo
- Publication number
- CN203456835U CN203456835U CN201320600332.4U CN201320600332U CN203456835U CN 203456835 U CN203456835 U CN 203456835U CN 201320600332 U CN201320600332 U CN 201320600332U CN 203456835 U CN203456835 U CN 203456835U
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- China
- Prior art keywords
- transmission line
- pole
- overhead transmission
- circuit
- electrically connected
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- 230000005540 biological transmission Effects 0.000 title claims abstract description 18
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 239000012774 insulation material Substances 0.000 description 1
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Abstract
The utility model provides an overhead power transmission line, comprising overhead lines including a main line and a plurality of branch lines connected to the main line. A line recloser is arranged on each branch line, and an input terminal and an output terminal of the line recloser are both connected to the branch line. According to the technical scheme, the overhead power transmission line can disconnect a fault branch line without affecting power supply of the main line and the other branch lines.
Description
Technical field
The utility model relates to electric power conveying technology field, in particular to a kind of overhead transmission line.
Background technology
In the prior art, overhead transmission line is in power station.When certain branch line of supply line breaks down, automatic circuit can trip, and carries out automatic reclosing.If fault disappears after overlapping, recover normal power supply, if fault still exists after overlapping, automatic circuit trips again.Automatic circuit loses power supply capacity in tripping operation Hou， whole piece supply line, makes the normal power supply of the fault effects whole piece electric wire of branch line.
Utility model content
The utility model aims to provide and a kind ofly can carry out power-off and not affect the overhead transmission line for the power supply of main line and all the other branch lines fault branch line.
To achieve these goals, according to an aspect of the present utility model, a kind of overhead transmission line is provided, comprise overhead wire, overhead wire comprises main line and is connected to many branch lines on main line, on every branch line, be provided with circuit automatic circuit, incoming end and the output of circuit automatic circuit are all connected on branch line.
Further, circuit automatic circuit comprises: high pressure cut-offs unit, and high pressure cut-offs unit and comprises interconnective pole and operating mechanism, and the incoming end of pole and output are connected on branch line, and pole comprises for making the arc control device of branch line break-make.
Further, the incoming end of pole is provided with the first current sensor, and the output of pole is provided with the second current sensor.
Further, arc control device are vacuum interrupter, and the incoming end of vacuum interrupter is electrically connected to the first current sensor, and the output of vacuum interrupter is electrically connected to the second current sensor.
Further, circuit automatic circuit also comprises voltage transformer, and the incoming end of voltage transformer is electrically connected to branch line, and the output of voltage transformer is electrically connected to operating mechanism.
Further, circuit automatic circuit also comprises protection casing, and operating mechanism is arranged in protection casing, and pole is arranged on the top of protection casing.
Further, the external link that is connected with of guard box, is also connected with the lightning arrester being electrically connected to pole on link, and guard box body is positioned between lightning arrester and voltage transformer.
Further, guard box is also provided with for the mechanical trip to arc control device manual brake separating outward.
Further, circuit automatic circuit also comprises the control cabinet being electrically connected to operating mechanism.
Application the technical solution of the utility model, on branch line, be connected with circuit automatic circuit, when branch line breaks down, circuit automatic circuit can trip prior to the automatic circuit in power station, thereby only the branch line breaking down is carried out to power-off, and can not impact the main line of overhead wire and other branch line, reduced the coverage that branch line breaks down.
Accompanying drawing explanation
The Figure of description that forms the application's a part is used to provide further understanding of the present utility model, and schematic description and description of the present utility model is used for explaining the utility model, does not form improper restriction of the present utility model.In the accompanying drawings:
Fig. 1 shows according to the connection diagram of the embodiment of circuit automatic circuit of the present utility model.
Above-mentioned accompanying drawing comprises the following drawings mark:
11, pole; 20, voltage transformer; 30, protection casing; 40, control cabinet.
Embodiment
It should be noted that, in the situation that not conflicting, embodiment and the feature in embodiment in the application can combine mutually.Describe below with reference to the accompanying drawings and in conjunction with the embodiments the utility model in detail.
As shown in Figure 1, as can be seen from the figure, the overhead transmission line of the present embodiment comprises overhead wire, and overhead wire comprises main line and many branch lines that are connected on main line.On every branch line, be provided with circuit automatic circuit, incoming end and the output of circuit automatic circuit are all connected on branch line.On branch line, be connected with circuit automatic circuit, when branch line breaks down, circuit automatic circuit can trip prior to the automatic circuit in power station, thereby only the branch line breaking down is carried out to power-off, and can not impact the main line of overhead wire and other branch line, reduced the coverage after branch line breaks down.
Circuit automatic circuit in the present embodiment comprises that high pressure cut-offs unit, and high pressure cut-offs pole 11 and the operating mechanism that unit comprises series connection.Wherein the incoming end of pole 11 is provided with the first current sensor, and the second end of pole 11 is provided with the second current sensor, and pole 11 is connected on branch line by the first current sensor and the second current sensor.In pole 11, be also provided with arc control device, the incoming end of arc control device is connected with the first current sensor, and the output of arc control device is connected with the second current sensor.Circuit automatic circuit is by the power on/off state of opening a sluice gate or close a floodgate to control branch line of arc control device.Pole 11 preferably adopts insulation material, and arc control device are preferably vacuum interrupter.
The operating mechanism being connected with pole 11 is for controlling opening a sluice gate and closing a floodgate of arc control device.In the circuit automatic circuit of the present embodiment, also comprise the control cabinet 40 being connected with operating mechanism, control cabinet 40 is generally arranged on the below that high pressure cut-offs unit.Operating personnel can control operating mechanism as required and by the button on control cabinet 40, and then control the object of opening a sluice gate and close a floodgate to reach the on off operating mode of controlling branch line of arc control device.For ease of operating personnel, can confirm the operation of oneself, can on the control panel of control cabinet 40, arrange and the corresponding indicator light of button.
For operating mechanism is protected, at operating mechanism, be also provided with protection casing 30 outward to reduce the impact of outer bound pair operating mechanism, and the pole 11 being connected with operating mechanism is preferably connected to the upper surface place of protection casing 30, so that pole 11 is fixing.Protection casing 30 is connected on electric pole by link and is positioned at the below of branch line.Preferably, at protection casing 30, be outside equipped with mechanical trip, by this mechanical decoupling, can realize operating personnel arc control device are carried out to manual brake separating.Further preferably, on link, be provided with lightning arrester in case principal vertical line road automatic circuit is struck by lightning.
For operating mechanism is powered, the circuit automatic circuit of the present embodiment is also provided with voltage transformer 20, and voltage transformer 20 is connected on link.The incoming end of voltage transformer 20 is electrically connected to branch line, and the output of voltage transformer 20 is electrically connected to operating mechanism.Voltage transformer 20 can be converted into the high-tension electricity on branch line can be for the low tension of operating mechanism, thereby without provide extra power supply to power to operating mechanism.Preferably, branch line has three wires, and the incoming end of voltage transformer 20 is two, and two incoming ends are connected with the wire of respective phase respectively.Preferably, protection casing 30 is arranged between voltage transformer 20 and lightning arrester.
The foregoing is only preferred embodiment of the present utility model, be not limited to the utility model, for a person skilled in the art, the utility model can have various modifications and variations.All within spirit of the present utility model and principle, any modification of doing, be equal to replacement, improvement etc., within all should being included in protection range of the present utility model.
Claims (9)
1. an overhead transmission line, comprise overhead wire, described overhead wire comprises main line and is connected to many branch lines on described main line, it is characterized in that, on every described branch line, be provided with circuit automatic circuit, the incoming end of described circuit automatic circuit and output are all connected on described branch line.
2. overhead transmission line according to claim 1, it is characterized in that, described circuit automatic circuit comprises: high pressure cut-offs unit, described high pressure cut-offs unit and comprises interconnective pole (11) and operating mechanism, the incoming end of described pole (11) and output are connected on described branch line, and described pole (11) comprises for making the arc control device of described branch line break-make.
3. overhead transmission line according to claim 2, is characterized in that, the incoming end of described pole (11) is provided with the first current sensor, and the output of described pole (11) is provided with the second current sensor.
4. overhead transmission line according to claim 3, it is characterized in that, described arc control device are vacuum interrupter, and the incoming end of described vacuum interrupter is electrically connected to described the first current sensor, and the output of described vacuum interrupter is electrically connected to described the second current sensor.
5. overhead transmission line according to claim 4, it is characterized in that, described circuit automatic circuit also comprises voltage transformer (20), and the incoming end of described voltage transformer (20) is electrically connected to described branch line, and the output of described voltage transformer (20) is electrically connected to described operating mechanism.
6. overhead transmission line according to claim 5; it is characterized in that; described circuit automatic circuit also comprises protection casing (30), and described operating mechanism is arranged in described protection casing (30), and described pole (11) is arranged on the top of described protection casing (30).
7. overhead transmission line according to claim 6; it is characterized in that; described protection casing (30) is externally connected with link; on described link, be also connected with the lightning arrester being electrically connected to described pole (11), described protection casing (30) is positioned between described lightning arrester and described voltage transformer (20).
8. overhead transmission line according to claim 6, is characterized in that, described guard box is also provided with for the mechanical trip to described arc control device manual brake separating outward.
9. overhead transmission line according to claim 2, is characterized in that, described circuit automatic circuit also comprises the control cabinet (40) being electrically connected to described operating mechanism.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320600332.4U CN203456835U (en) | 2013-09-25 | 2013-09-25 | Overhead power transmission line |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320600332.4U CN203456835U (en) | 2013-09-25 | 2013-09-25 | Overhead power transmission line |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203456835U true CN203456835U (en) | 2014-02-26 |
Family
ID=50136688
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320600332.4U Expired - Fee Related CN203456835U (en) | 2013-09-25 | 2013-09-25 | Overhead power transmission line |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203456835U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104466867A (en) * | 2013-09-25 | 2015-03-25 | 国家电网公司 | Overhead transmission line |
-
2013
- 2013-09-25 CN CN201320600332.4U patent/CN203456835U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104466867A (en) * | 2013-09-25 | 2015-03-25 | 国家电网公司 | Overhead transmission line |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140226 Termination date: 20180925 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |