Design and Full-Scale Test for Steel Tubular Tower of UHV and EHV Quadruple-Circuit Transmission Line on the same Tower

2013 ◽  
Vol 732-733 ◽  
pp. 1045-1051 ◽  
Author(s):  
Qing Hua Li ◽  
Jing Bo Yang ◽  
Jun Ke Han
Keyword(s):  
Transmission Line ◽  
Transmission Lines ◽  
Power Transmission ◽  
High Strength ◽  
Steel Tube ◽  
Full Scale ◽  
Full Scale Test ◽  
Transmission Tower ◽  
Wind Vibration ◽  
Scale Test

State Grid Corporation of China has carried out research on key technology of UHV&EHV AC and DC multi-circuit transmission lines, the research on material and structure of transmission tower is the important part. The SSZT2 tower, on which 1000 kV AC double-circuit and 500 kV AC double-circuit are arranged, is the largest power transmission capacity all over the world. Q420 high-strength tubular steel, the plug-in boards and forging flanges are used in SSZT2 tower,and the forging flange with strength classification is applied for the first time. Through the monographic study on the tower structures, wind vibration coefficient, and biaxial bending of steel tube etc. The success of full-scale test verified the reliability in design and manufacture of multi-circuit steel tubular tower for UHV and EHV. Research results of this paper can be applied in UHV transmission line projects.

Design and Full-Scale Test for Cup-Type Steel Tubular Tower of UHV Transmission Line in Heavy Icing Area

2013 ◽  
Vol 732-733 ◽  
pp. 1074-1080 ◽  
Author(s):  
Zi Fu Zhang ◽  
Jing Bo Yang ◽  
Feng Li Yang ◽  
Qing Hua Li
Keyword(s):  
Transmission Line ◽  
Bending Moment ◽  
Full Scale ◽  
Full Scale Test ◽  
Research Results ◽  
Type Steel ◽  
Monographic Study ◽  
Scale Test ◽  
Design And Manufacture

The ZB1 cup-type steel tubular tower is the first single-circuit tower for UHV transmission line in heavy icing area. Except the ground supports, steel tubular are applied in whole tower. The plug-in boards and forging flanges are used in ZB1 tower,and the highest strength of tubular steel is Q345. Through the monographic study on the tower optimizationnode structuretowers Eiffel effect and bending moment at member end et., The design of ZB1 cup-type steel tubular tower is improved. The success of full-scale test verified the reliability in design and manufacture of cup-type steel tubular tower for UHV in heavy icing area. Research results of this paper can be applied in UHV transmission line projects.

Simulation and Experiential Research for Broken Conductor Load of Suspension Towers of UHVDC Power Transmission

2012 ◽  
Vol 249-250 ◽  
pp. 798-803
Author(s):  
Zi Fu Zhang ◽  
Zeng Lu Mo ◽  
Jing Du Geng
Keyword(s):  
Dynamic Response ◽  
Transmission Line ◽  
Transmission Lines ◽  
Power Transmission ◽  
Dynamic Strain ◽  
Power Transmission Lines ◽  
Transmission Tower ◽  
Research Results ◽  
Experiential Research ◽  
First Time

The breakage of conductor/ground wire seriously affects the secure operation of transmission line. According to the features of UHVDC power transmission lines, the broken conductor model for bundled conductors of continuous span is built and the broken conductor load is calculated; A simulating test was carried out the first time in China for a series of "broken conductor" events on one continuous span on the field to study the dynamic response of the transmission tower because of impact, then the dynamic strain and displacement were obtained. On the basis of the simulation and experiential research results, the paper discussed about the rational values of broken wire loads for the suspension towers of UHVDC.

Full-scale test and numerical failure analysis of a latticed steel tubular transmission tower

2020 ◽  
Vol 208 ◽  
pp. 109919 ◽  
Author(s):  
Li Tian ◽  
Haiyang Pan ◽  
Ruisheng Ma ◽  
Lijuan Zhang ◽  
Zhengwei Liu
Keyword(s):  
Failure Analysis ◽  
Full Scale ◽  
Full Scale Test ◽  
Transmission Tower ◽  
Scale Test

Full-Scale Tests and Numerical Simulations of Failure Mechanism of Power Transmission Towers

2018 ◽  
Vol 18 (09) ◽  
pp. 1850109 ◽  
Author(s):  
Li Tian ◽  
Liulu Guo ◽  
Ruisheng Ma ◽  
Xia Gai ◽  
Wenming Wang
Keyword(s):  
Failure Mechanism ◽  
Power Transmission ◽  
Failure Process ◽  
Material Model ◽  
Full Scale ◽  
Transmission Tower ◽  
Transmission Towers ◽  
Loading Patterns ◽  
Scale Test ◽  
Full Scale Tests

Full-scale tests are conducted to investigate the load-bearing capacity and failure mechanism of power transmission towers subjected to various loading patterns (broken lines, wind and ice). Detailed finite element models of power transmission towers are established based on these experimental prototypes. To capture the member instability, the integral stability coefficients are obtained from different specifications and introduced into a user-defined material model. Subsequently, the failure analysis of power transmission towers is carried out using an explicit algorithm, and good agreement is found in comparison with experimental results. The results show that the proposed procedure is effective in simulating the power transmission tower failure process. The full-scale test and numerical simulation studies can provide a valuable database for the design of power transmission towers subjected to various loads.

scholarly journals Design and Full-scale Test for ZC3 Tangent Tower of ±1100kV UHVDC Transmission Line

2019 ◽  
Vol 330 ◽  
pp. 052041
Author(s):  
Zifu Zhang ◽  
Jingdu Geng ◽  
Qinghua Li ◽  
Haijun Xing ◽  
Guoqiang Wu ◽  
...  
Keyword(s):  
Transmission Line ◽  
Full Scale ◽  
Full Scale Test ◽  
Scale Test

scholarly journals Effects of Ground Resistivity and Tower Structural Design on Transmission Line Symmetrical Components

2020 ◽  
Vol 9 (1) ◽  
pp. 2115-2126
Keyword(s):  
Transmission Line ◽  
Electric Power ◽  
Transmission Lines ◽  
Structural Design ◽  
Power Transmission ◽  
Design Parameters ◽  
Transmission Tower ◽  
Electric Power Supply ◽  
Symmetrical Components ◽  
Transmission Towers

Electric power transmission towers are line support that exists in different structural configurations depending on the design. Parameters in consideration for the design include proposed voltage and current ratings to be carried by the tower, weight of aluminum conductor and the weight of concrete foundation on which the tower would be erected. It is often reported that ground resistivity of the ground on which an electric power transmission tower is erected has significant effects on earth faults and transmission losses on the line. This paper presents an investigation of the effects of ground resistivity and tower structural design on transmission line symmetrical components. Symmetrical component parameters’ evaluation of the transmission lines approach is considered the best option. Ten differently structured transmission towers were selected for the case study. The effects of installing these ten towers on each of the available ground resistivity types were examined. A modern computer software was developed in carrying out this investigation. The results are presented and discussed. It was observed that at each location of a tower, ground resistivity plays a vital role in measuring the performance of tower in an electric power supply stability and reliability

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