An Analysis Method for Conductor Galloping Instability

A technology of wire galloping and analysis methods, applied in design optimization/simulation, instruments, electrical digital data processing, etc., can solve problems such as cumbersome and complex calculation methods, threats to power grid security, and simplicity, so as to improve accuracy and effectiveness, simplify Calculation formula, the effect of improving calculation accuracy

Active Publication Date: 2020-02-04
CHINA ELECTRIC POWER RES INST +2
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the icing dancing of conductors has become a serious disaster form that endangers the safe and stable operation of transmission lines, and poses a huge threat to the safety of power grids.
[0003] Conductor galloping conditions and galloping characteristics are the two most important parameters in engineering galloping design. The calculation methods given by the existing research results are either very cumbersome and complicated, not suitable for actual engineering design applications; or relatively simple, the calculation Accuracy does not meet the requirements
Therefore, the actual engineering design mainly relies on empirical values, which seriously affects the anti-dance design effect.

Method used

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  • An Analysis Method for Conductor Galloping Instability
  • An Analysis Method for Conductor Galloping Instability
  • An Analysis Method for Conductor Galloping Instability

Examples

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Comparison scheme
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Embodiment 1

[0042] The invention of this example provides a wire galloping instability analysis method, including such figure 1 Shown:

[0043] (1) Determine the aerodynamic parameters and aerodynamic load according to the eccentric icing type of the wire;

[0044] (2) Establishing a wire galloping start-up wind speed calculation model according to the aerodynamic parameters and the vibrator model to calculate the wire galloping start-up wind speed;

[0045] (3) Calculate the amplitude characteristics of wire galloping according to the aerodynamic parameters and the calculation model of wire galloping onset wind speed.

[0046] 1. Selection principle of aerodynamic load on ice-coated conductors

[0047] The aerodynamic characteristics of eccentric ice-coated conductors are the most important parameters affecting galloping excitation. At present, there is a single way to obtain the aerodynamic force of ice-coated conductors, mainly through experimental methods. First, based on the quasi-...

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Abstract

The invention relates to a conductor galloping instability analysis method. The method comprises the steps of (1) determining pneumatic parameters and a pneumatic load according to an eccentric icing form of a conductor; (2) building a conductor galloping oscillation starting wind speed calculation model for calculating a conductor galloping oscillation starting wind speed according to the pneumatic parameters and an oscillator model; and (3) calculating a conductor galloping amplitude characteristic according to the pneumatic parameters and the conductor galloping oscillation starting wind speed calculation model. The technical scheme has a very important effect for improving the accuracy and effectiveness of anti-galloping design of a power transmission line.

Description

Technical field: [0001] The invention relates to the technical field of wire galloping prevention, and more particularly relates to a method for analyzing the galloping instability of wires. Background technique: [0002] With the expansion of the construction scale of transmission lines in my country and the evolution of meteorological conditions in recent years, severe weather has occurred frequently. In the winter ice and snow weather, after the conductor is eccentrically covered with ice, galloping is very easy to occur. At present, the icing galloping of conductors has become a serious disaster form that endangers the safe and stable operation of transmission lines, and poses a huge threat to the safety of power grids. [0003] Conductor galloping conditions and galloping characteristics are the two most important parameters in engineering galloping design. The calculation methods given by the existing research results are either very cumbersome and complicated, not sui...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F30/20G06F119/14
Inventor 刘彬张立春朱宽军齐翼司佳钧刘操兰李新民展雪萍杨加伦张军刘龙张峰
Owner CHINA ELECTRIC POWER RES INST
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