An important leap design method for transmission lines that can be quickly repaired

A technology for transmission lines and design methods, applied in the direction of overhead lines/cable equipment, etc., can solve the problems of transmission line accidents and inability to quickly repair, and achieve the effect of avoiding accidents, quickly repairing and restoring power supply, and avoiding power grid system risks.

Active Publication Date: 2021-07-30
国核电力规划设计研究院重庆有限公司
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  • Abstract
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AI Technical Summary

Problems solved by technology

The invention mainly solves the problem that the transmission line cannot be quickly repaired when an accident occurs at an important crossing point

Method used

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  • An important leap design method for transmission lines that can be quickly repaired
  • An important leap design method for transmission lines that can be quickly repaired
  • An important leap design method for transmission lines that can be quickly repaired

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Effect test

Embodiment

[0044] Taking a single-circuit 220kV line crossing a high-speed rail as an example, the comparison between the present invention and the prior art is shown in Table 1:

[0045] Table 1

[0046]

[0047] As can be seen from Table 1, the initial investment of a single-circuit line only increases by about 3%, and if the three-circuit lines are in parallel, it is equivalent to an increase of about 1% for each circuit. Considering the present invention, it is possible to avoid the need for reliability improvement in the prior art. After setting excessive useless redundancy, the initial investment may be lower than the existing technology. However, it avoids the long-term impact on the objects to be crossed, and the repair is timely and fast, avoiding the loss of long-term power failure and the possible system risk.

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Abstract

The invention belongs to the technical field of power transmission lines, and discloses a design method for an important crossing of a power transmission line that can be quickly repaired. Erection of one-phase wire as a spare spare phase wire is usually run in parallel with the adjacent phase wire or grounded; if a phase wire of a certain circuit breaks, only the broken phase wire is removed to relieve the impact on the important facilities across; Change the jumper and replace the broken phase wire with the spare phase wire to quickly restore the power supply. After adopting the present invention, if an important spanning section of the transmission line is disconnected, the impact on important facilities can be quickly removed, the impact on the facility can be avoided, and the power supply can be quickly repaired and restored, which is convenient, fast and basically free of cost.

Description

technical field [0001] The invention belongs to the technical field of power transmission lines, and in particular relates to a design method for an important span of a power transmission line that can be rapidly repaired. Background technique [0002] Currently, the closest prior art: [0003] Transmission lines will inevitably involve crossing various important facilities such as high-speed railways, expressways, and important transmission lines. Due to the importance of these facilities, on the one hand, the design of transmission lines should be strengthened for important crossings to reduce the probability of accidents. Restore power. [0004] For the important leap, the existing technology mainly takes the following measures: first, strengthen the tower, increase the structural importance coefficient from 1.0 to 1.1 or even 1.2, and improve the strength of the tower; second, strengthen the metal insulator string, improve the strength level and safety of the metal ins...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02G1/02
CPCH02G1/02
Inventor 向城名卢飞袁兆祥史原通程述一黄彭
Owner 国核电力规划设计研究院重庆有限公司
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