Numerical Simulation of Wind-induced Swing Angle of 1000kV Transmission Line Suspension Insulator Strings Considering Dynamic Response

Author:

Feng Zhihui,Li Tao,Zheng Lei,Li Jian

Abstract

Abstract The wind-induced swing angle of insulator strings directly affects the electrical insulation performance and the construction cost of the UHV transmission project. However, due to not considering the fluctuating wind pressure, the calculation results of wind-induced swing tend to be conservative when adopting the recommended guidelines of standard especially in the face of severe weather. This paper simulates the transient wind field of strong winds based on time-space correlation characteristics and constructs the fluctuating wind load distribution model exerting on the UHV transmission line. Then a refined finite element model of the multi-span transmission line including the entire tensile section is established. And the swing angle of the insulator strings calculation formula is fitted based on the calculation results of the wind-induced swing response. The calculation result shows the swing angle decreases with the increase of ice thickness, and the magnified coefficient of the wind-induced swing angle at the target tower under the basic wind speed of 15m/s is 1.03.

Publisher

IOP Publishing

Subject

General Physics and Astronomy

Reference5 articles.

1. Wind tunnel test and wind-induced response analysis of 1000 kV transmission line under typhoon wind fields;Li;Journal of Electric Power Science and Technology,2021

2. Discussion on Wind-induced Swing Flashover and Conductor Wind Load of EHV Transmission Lines;Lou;High Voltage Engineering,2019

3. Situation Awareness Method of Power Grid Operation Risk Under Typhoon Weather;Li;High Voltage Engineering,2021

4. Dynamic wind-induced swing response and parameters’ influence analysis of UHV transmission lines;Lou;China Civil Engineering Journal,2019

5. Selection of Calculation Model for Steel Tubular Tower of UHV Power Transmission Line;Yang;Power System Technology,2010

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