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Method for iron tower anti-lead galloping of coupled system of iron tower, lead and anti-galloping device

A coupling system and wire galloping technology, which is applied in the iron tower, anti-dance device coupling system, iron tower anti-wire galloping, and wire fields, can solve the problem of not considering the mutual coupling and mutual influence of adjacent wires, which are rarely mentioned in the safety research of iron towers. Does not consider issues such as the coupling effect of iron towers and wire anti-dance devices, so as to achieve the effect of rapid modeling

Active Publication Date: 2010-10-13
CENT SOUTHERN CHINA ELECTRIC POWER DESIGN INST CHINA POWER ENG CONSULTING GROUP CORP
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AI Technical Summary

Problems solved by technology

[0005] Previous galloping studies mostly focused on the galloping of the wire itself, and approximated the iron tower as a spring-supported boundary. This research method has the following shortcomings: (1) The coupling effect between the iron tower, the wire, and the anti-dance device is not cons

Method used

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  • Method for iron tower anti-lead galloping of coupled system of iron tower, lead and anti-galloping device
  • Method for iron tower anti-lead galloping of coupled system of iron tower, lead and anti-galloping device
  • Method for iron tower anti-lead galloping of coupled system of iron tower, lead and anti-galloping device

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Experimental program
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Example

[0117] Comparative example: comparison with and without anti-dance device

[0118] In order to test the anti-dancing effect of the anti-dancing device, a double tensile tower with and without anti-dancing device-a single-phase six-split conductor model (6 split LGJ-300 / 40 conductor, 400-meter span) was established, and two models were calculated. The galloping situation under the conditions of 8m / s wind speed and 30° initial angle of attack.

[0119] Calculation results:

[0120] A. The time experienced during the dancing stage of the wire has increased from 800s to 5000s, indicating that the installation of a double pendulum anti-dance device can effectively suppress the formation of wire dancing;

[0121] B. The maximum amplitude of wire galloping was reduced from 3.84m to 1.63m, a reduction of 60%, indicating that the installation of a double pendulum anti-dancing device effectively reduced the amplitude of galloping;

[0122] C. The frequency of wire dancing has changed from 21-22 ...

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Abstract

The invention discloses a method for iron tower anti-lead galloping of a coupled system of an iron tower, leads and an anti-galloping device. The method comprises the following steps: establishing an iron tower model; setting a lead galloping parameter; establishing a coupled system module of the iron tower, the leads and the anti-galloping device; adding an iron tower node load; setting tower foot node restraining; calculating and solving by utilizing a core calculation module; utilizing a post processing module to directly calculate to output an internal force-time course curve of an iron tower unit; checking the bearing capacity of the iron tower unit according to the calculated output internal force-time course curve of the iron tower unit; and judging whether the iron tower unit needs to be reinforced. The invention considers the coupling effect of the iron tower, the leads and anti-galloping device, accurately studies the lead galloping regulation after the weapon is additionally arranged, can calculate and analyze the influence of lead galloping on the iron tower, studies the bearing capacity of iron tower galloping resistance, provides a basis for reinforcing the iron tower unit, and can satisfy the requirements of scientific research and engineering design.

Description

technical field [0001] The invention relates to a method for an iron tower to resist galloping of a wire in a coupling system of an iron tower, a wire and an anti-dance device. Background technique [0002] Conductor galloping is the nonlinear vibration of fluid-solid coupling generated by ice-coated conductors under the excitation of relatively stable wind. [0003] The ice-coated wire has a large galloping range, a long duration, and great harm. In the lightest case, phase-to-phase flashover, damage to conductors and fittings, in severe cases, it may lead to accidents such as line tripping, power outage, disconnection and tower collapse, resulting in major economic losses. In the southern ice disaster in 2008, many transmission line towers were damaged due to wire dancing. Wire galloping is accidental in time and space and is difficult to observe. my country is a country with frequent galloping, and conductor galloping has become one of the important factors threatening...

Claims

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Application Information

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IPC IPC(8): H02G7/14
Inventor 曾德森舒爱强包永忠杨景胜李强沈聪
Owner CENT SOUTHERN CHINA ELECTRIC POWER DESIGN INST CHINA POWER ENG CONSULTING GROUP CORP
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