A simulation calculation method and simulation test device for the tension change of a single-gear conductor of a transmission line

A transmission line, simulation calculation technology, applied in the direction of calculation, tension measurement, computer aided design, etc., can solve the problem that the force of the transmission line cannot be accurately reflected, so as to save the risk and cost of the test, the track curve is accurate, and the accuracy is guaranteed and reliability effects

Active Publication Date: 2021-03-05
HUZHOU ELECTRIC POWER SUPPLY CO OF STATE GRID ZHEJIANG ELECTRIC POWER CO LTD +2
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Problems solved by technology

[0006] The invention mainly solves the technical problem that the mechanical calculation of the existing grid lines and wires is mainly based on theoretical calculations and finite element simulations, and cannot accurately reflect the force of the actual transmission lines; it provides a transmission line with high simulation accuracy and good applicability. Simulation Calculation Method and Simulation Test Device for Conductor Tension Variation

Method used

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  • A simulation calculation method and simulation test device for the tension change of a single-gear conductor of a transmission line
  • A simulation calculation method and simulation test device for the tension change of a single-gear conductor of a transmission line
  • A simulation calculation method and simulation test device for the tension change of a single-gear conductor of a transmission line

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Embodiment

[0058]Embodiment: The method for simulating and calculating the tension change of a single-gear conductor of a transmission line in this embodiment is used to simulate the change of the horizontal tension of the conductor caused by the change of the span of the transmission line. The steps of the simulation calculation method are as follows:

[0059] (1) According to the span and height difference of the actual design conditions of the transmission line, determine the type of conductor and the comprehensive load g;

[0060] (2) According to the wire type, obtain the cross-sectional area A of the wire, the modulus of elasticity of the wire E and the initial tension T m ;

[0061] (3) According to the above parameters, obtain the final horizontal deflection △L of the clamp at the bottom of the hanging string, divide △L into n parts of the horizontal displacement △l on average, △L=n×△l;

[0062] (4) Establish the relationship between the horizontal displacement of the bottom cla...

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Abstract

The invention discloses a simulation calculation method and a simulation test device for the tension change of a single-stage conductor of a power transmission line. The pulley pulls the wire that moves the pulley to roll. The wire is connected with a tension meter and a displacement meter. The tension of the wire is suspended on the movable pulley to simulate the attached weight. The simulation of the transmission line is shortened to within a few meters. Under the condition that the stress characteristics of the suspension string are consistent with those on the original transmission line, it can accurately and effectively reflect the tension change of the corresponding transmission line, and ensure the accuracy and reliability of the design of the transmission line. The test difficulty, test risk and test cost are greatly reduced.

Description

technical field [0001] The invention relates to the field of load testing of power transmission line poles and towers, in particular to a simulation calculation method and a simulation test device for the tension change simulation of a single-stage wire of a transmission line with high simulation accuracy and good applicability. Background technique [0002] With the rapid development of the national economy, my country's power demand continues to increase, which has rapidly expanded the scale of the power grid. Through the construction and operation of UHV transmission lines, my country's power grid has developed into the world's most complex and largest power grid. Power grid line and wire mechanics The calculations are generally based on theoretical calculations and finite element simulations, and there are few tests for the tension testing of continuous-grade conductors of transmission lines at home and abroad. [0003] E.S.Healy and A.J.Wright conducted experimental rese...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F30/23G01L5/04G06F119/14
CPCG01L5/04G06F30/23G06F2119/06
Inventor 潘少良吴凯张大长陈焱彬朱奕弢张文杰李浩言王瑶蒋锋蒋伟王伟张翼
Owner HUZHOU ELECTRIC POWER SUPPLY CO OF STATE GRID ZHEJIANG ELECTRIC POWER CO LTD
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