CN104124658A - 220kV power transmission line using energy-saving OPGW cable operation mode - Google Patents
220kV power transmission line using energy-saving OPGW cable operation mode Download PDFInfo
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- CN104124658A CN104124658A CN201410117700.9A CN201410117700A CN104124658A CN 104124658 A CN104124658 A CN 104124658A CN 201410117700 A CN201410117700 A CN 201410117700A CN 104124658 A CN104124658 A CN 104124658A
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- opgw
- tower
- transmission line
- cable
- ground wire
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Abstract
The invention discloses a 220 kV power transmission line using an energy-saving OPGW cable operation mode and relates to the technical field of the high-voltage power transmission line. The 220 kV power transmission line using the energy-saving OPGW cable operation mode comprises a tangent tower and a strain tower, the tower head of each of the tangent tower and strain tower is provided with a ground wire and an OPGW cable, the OPGW cable is insulated from the tangent tower through ground wire insulators in a mode of using tray as a unit, the joints between the cable trays are connected with the ground, the whole OPGW cable is continuous, on one part of the strain tower between each two joints, the positions of the OPGW cable and the ground wire are changed, at the position change part, the OPGW cable is fixed on the tower head through an insulated down-lead clip, and at the transformer substation export, the segment of the ground wire with larger short-circuit current is directly connected with the ground. According to the 220 kV power transmission line, although a loop is formed between the OPGW cable and the ground, the induced current is greatly lowered because of the counteracting of the induced voltage, the electric energy consumption is greatly lowered, the electrical performance difference of a system due to the grounding times of the shunting ground wire and OPGW is reduced, the lightning stroke probability of the OPGW is lowered in a certain degree, the cable running condition is improved, and the initial investment for the OPGW cable of the power transmission line is saved.
Description
Technical field:
The present invention relates to ultra-high-tension power transmission line technical field, relate in particular to a kind of 220kV transmission line of the OPGW of employing optical cable About Energy Saving Method.
Background technology:
The transmission line of China 220kV all adopts double earth wire design, initial stage earth wire of power transmission line operational mode is all by tower ground connection by two ground wires, this kind of transmission line major defect has: electromagnetism when circuit normally moves between ground wire and wire and Electrostatic Field Coupling effect meeting produce thousands of volts longitudinal induction electromotive force and electrostatic induction voltage distributing along the line on ground wire, OPGW will form ground wire circulation with geoinduction current circuit, on transmission line, can produce larger induction loss.
Afterwards in order to reduce the electric energy loss of earth wire of power transmission line, change ground wire into all insulation operational mode, along with the large-scale application of OPGW optical cable in transmission line, 220kV transmission line adopts common ground wire graded insulation substantially, OPGW optical cable is by tower earthing mode, but this kind of transmission line major defect has: the difference of transmission line OPGW optical cable and common ground wire, cause OPGW side joint earth resistance less, in the time there is thunderbolt, lightning current always selects OPGW side to enter ground, with the disconnected strand Frequent Troubles of the outer monofilament of electroluminescence cable, for safe operation, must increase the outer filament diameter of optical cable, cause work transmission line initial stage body increase of investment.
Summary of the invention:
The object of this invention is to provide the 220kV transmission line of a kind of employing " insulation of OPGW cable segment, single-point grounding, middle transposition " operational mode.
In order to solve existing problem in background technology, the present invention is by the following technical solutions: it comprises tangent tower, strain tower, tangent tower and strain tower tower head are furnished with ground wire and OPGW optical cable, OPGW optical cable insulate by ground insulator and tangent tower taking dish as unit, continue and locate ground connection at every dish, OPGW optical cable keeps connecting continuously completely, on the place's strain tower between every two places of continuing, OPGW optical cable and ground wire replace, transposition OPGW optical cable is fixed on tower head by insulated down lead clamp, larger section of direct ground connection of ground wire of transformer station's outlet short circuit current.
The present invention has the following advantages compared with conventional transmission line:
(1) although form loop in transmission line of the present invention between OPGW optical cable and the earth, due to the counteracting of induced voltage, induced current also declines to a great extent, and loss is simultaneously directly proportional to faradic square, and therefore transmission line electric energy loss reduces greatly.
(2) transmission line of the present invention has reduced the system electrical performance difference that shunt ground wire and OPGW cause due to ground connection number of times, can reduce to a certain extent the probability that OPGW is struck by lightning, improve the service conditions of optical cable, saved the initial investment of transmission line OPGW optical cable.
Brief description of the drawings:
Fig. 1 is operation schematic diagram of the present invention;
Fig. 2 is circuit model figure of the present invention.
Embodiment:
With reference to Fig. 1-2, it comprises tangent tower, strain tower the present invention, tangent tower and strain tower tower head are furnished with ground wire and OPGW optical cable, OPGW optical cable insulate by ground insulator and tangent tower taking dish as unit, continue and locate ground connection at every dish, OPGW optical cable keeps connecting continuously completely, and on the place's strain tower between every two places of continuing, OPGW optical cable and ground wire replace, transposition OPGW optical cable is fixed on tower head by insulated down lead clamp, larger section of direct ground connection of ground wire of transformer station's outlet short circuit current.
OPGW optical cable 1 earth point 2 of the present invention is chosen in cable connection place, and OPGW optical cable 1 should be chosen on arbitrary place strain tower 4 at non-cable connection place with ground wire 3 exchange point, utilize insulated type optical fiber down lead clip that OPGW optical cable is replaced to opposite side through earth wire support top, complete OPGW optical cable and ground wire transposition, can make the dosage of OPGW optical cable insulating connector box, remaining cable frame and insulated down lead clamp significantly reduce.
The present invention is owing to adopting the operational mode of " insulation of OPGW cable segment, single-point grounding, middle transposition ", the induced voltage that three-phase wire is produced on OPGW optical cable is cancelled out each other, induced current also declines to a great extent, because loss is directly proportional to faradic square, so loss reduces greatly, this About Energy Saving Method has reduced the system electrical performance difference causing due to ground connection number of times of shunt ground wire and OPGW simultaneously, reduce to a certain extent the probability that OPGW is struck by lightning, improved the service conditions of optical cable.
Claims (1)
1. one kind adopts the 220kV transmission line of OPGW optical cable About Energy Saving Method, it is characterized in that, it comprises tangent tower, strain tower, tangent tower and strain tower tower head are furnished with ground wire and OPGW optical cable, OPGW optical cable insulate by ground insulator and tangent tower taking dish as unit, continue and locate ground connection at every dish, OPGW optical cable keeps connecting continuously completely, on the place's strain tower between every two places of continuing, OPGW optical cable and ground wire replace, transposition OPGW optical cable is fixed on tower head by insulated down lead clamp, larger section of direct ground connection of ground wire of transformer station's outlet short circuit current.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410117700.9A CN104124658A (en) | 2014-03-24 | 2014-03-24 | 220kV power transmission line using energy-saving OPGW cable operation mode |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410117700.9A CN104124658A (en) | 2014-03-24 | 2014-03-24 | 220kV power transmission line using energy-saving OPGW cable operation mode |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104124658A true CN104124658A (en) | 2014-10-29 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410117700.9A Pending CN104124658A (en) | 2014-03-24 | 2014-03-24 | 220kV power transmission line using energy-saving OPGW cable operation mode |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104124658A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111244872A (en) * | 2020-03-22 | 2020-06-05 | 成都理工大学 | A method for arranging overhead ground wires of high-voltage transmission lines |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60134207A (en) * | 1983-12-22 | 1985-07-17 | Sumitomo Electric Ind Ltd | Insulated connection part of optical fiber composite overhead ground wire |
| US6191354B1 (en) * | 1998-04-16 | 2001-02-20 | Professional Communications, S. A. | Transmission conduit and method of installation |
| CN202840439U (en) * | 2012-08-29 | 2013-03-27 | 中国电力工程顾问集团东北电力设计院 | Double ground wire connecting system |
| CN103414144A (en) * | 2013-08-15 | 2013-11-27 | 国家电网公司 | Lightning protection system of extra-high voltage alternating-current double-circuit line in mountain area |
-
2014
- 2014-03-24 CN CN201410117700.9A patent/CN104124658A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60134207A (en) * | 1983-12-22 | 1985-07-17 | Sumitomo Electric Ind Ltd | Insulated connection part of optical fiber composite overhead ground wire |
| US6191354B1 (en) * | 1998-04-16 | 2001-02-20 | Professional Communications, S. A. | Transmission conduit and method of installation |
| CN202840439U (en) * | 2012-08-29 | 2013-03-27 | 中国电力工程顾问集团东北电力设计院 | Double ground wire connecting system |
| CN103414144A (en) * | 2013-08-15 | 2013-11-27 | 国家电网公司 | Lightning protection system of extra-high voltage alternating-current double-circuit line in mountain area |
Non-Patent Citations (1)
| Title |
|---|
| 韩立奎: "220KV输电线路OPGW光缆接地方式改进分析", 《光纤光缆》 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111244872A (en) * | 2020-03-22 | 2020-06-05 | 成都理工大学 | A method for arranging overhead ground wires of high-voltage transmission lines |
| CN111244872B (en) * | 2020-03-22 | 2021-06-11 | 成都理工大学 | Arrangement method of overhead ground wires of high-voltage transmission line |
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| PB01 | Publication | ||
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| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20141029 |