A windproof strength calculation and tower reinforcement method for a bottom-protecting power grid power transmission line

A technology for power transmission line and strength calculation, applied in the direction of calculation, electrical digital data processing, special data processing application, etc., can solve the problems of long construction blackout period, complicated power grid wiring, large investment cost, etc., to reduce the difficulty of civil coordination and save money Investment cost, effect of reducing wind load

Active Publication Date: 2019-06-14
GUANGDONG POWER GRID CO LTD +1
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Problems solved by technology

But the reality is that there are many 220kV lines in the Zhanjiang area, and the power grid wiring is relatively complicated. If the transformation is carried out according to the one-size-fits-all thinking, it will not only consume a large investment cost, but also require a long construction blackout period, and the actual operation is very difficult.

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  • A windproof strength calculation and tower reinforcement method for a bottom-protecting power grid power transmission line

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Embodiment 1

[0033] A windproof strength calculation and tower reinforcement method for power grid transmission lines, please refer to figure 1 , including the following steps:

[0034] S1: Calculate the wind load of the transmission line tower, where the wind load includes the wind load of the line and the wind load of the tower body;

[0035] S2: Establish three-dimensional models for all tower types, perform finite element force analysis and calculation, and check and calculate the strength of existing towers;

[0036] S3: Reinforce the tower according to the wind load calculation results and force analysis results.

[0037] In this embodiment, the calculation formula of the wind load in the step S1 is:

[0038] WX=α·W0·μZ·μSC·βC·d·Lp·sin2θ;

[0039] W0=V2 / 1600;

[0040] Among them, WX is the standard value of horizontal wind load perpendicular to the direction of conductor and ground wire, kN; α is the wind pressure uneven coefficient, which should be determined according to the de...

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Abstract

The invention discloses a novel windproof reinforcement design method for a bottoming power grid power transmission line, and the method comprises the following steps of S1, calculating the wind loadof a power transmission line iron tower, the wind load comprising a line wind load and a tower body wind load; S2, establishing a three-dimensional model for all tower types, carrying out finite element stress analysis and calculation, and checking the strength of the existing tower; and S3, reinforcing the tower according to the wind load calculation result and the stress analysis result.

Description

technical field [0001] The invention relates to the field of reinforcement of power grid poles and towers, and more particularly relates to a computerized pole tower reinforcement method for ensuring the windproof strength of power grid transmission lines. Background technique [0002] The coastal area of ​​Guangdong is located on the main path of tropical cyclones landing in China in the Northwest Pacific and the South China Sea. Due to the influence of high-altitude guided airflow, the frequency of tropical cyclones landing in Guangdong is the highest, and it is the area with the most serious tropical cyclone disasters in the country. In recent years, the coastal areas of Guangdong have been continuously hit by several strong typhoons, including super typhoons such as "Wamasun" and "Rainbow", which have landed in the coastal areas of Guangdong Province, causing large-scale tower collapse accidents on overhead transmission lines in coastal areas. [0003] According to the c...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F17/50
Inventor 黄国栋张志强陈晔陶祥海徐达艺欧英龙李知城黄平林伟谊陈宇谢锡汉吴飞
Owner GUANGDONG POWER GRID CO LTD
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