Lattice Tower Deflection and Modeling of the Structure and Spans in Practice

New locations for onshore technology, which have not been considered so far, must be developed to increase the total installed capacity of renewable energies, especially wind energy. For this purpose, cost-effective wind turbines, even in difficult-to-access locations, such as mountainous and high-mountainous areas, must be designed. This paper presents a novel wind turbine with a related control system that meets these requirements. The proposed turbine uses a multi-rotor configuration with five rotors arranged in a star shape configuration. Each rotor drive train combines up to 12 generators in a maintenance-friendly multi-generator concept. A suitable observer-based control for load mitigation in the full-load region is proposed for the multi-rotor and multi-generator design. Simulations are used to demonstrate the applicability and practical benefits of this concept.

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Numerical Investigations of Aerodynamic Forces on 2-D Square Lattice Tower Section Using Two-Equation Turbulence Models

Proceedings of the Eighth Asia-Pacific Conference on Wind Engineering ◽

10.3850/978-981-07-8012-8_243 ◽

2013 ◽

Author(s):

S. Chitra Ganapathi ◽

P. Harikrishna ◽

Nagesh R. Iyer

Keyword(s):

Turbulence Models ◽

Square Lattice ◽

Aerodynamic Forces ◽

Numerical Investigations ◽

Lattice Tower

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A study on wind speed correction method of lattice tower mast using CFD simulation

Transactions of the JSME (in Japanese) ◽

10.1299/transjsme.18-00042 ◽

2018 ◽

Vol 84 (862) ◽

pp. 18-00042-18-00042

Author(s):

Nobutoshi NISHIO ◽

Shinichi INABA ◽

Yuta YOSHIDA ◽

Akihiro SATO ◽

Tsuyoshi TAMUKAI ◽

...

Keyword(s):

Wind Speed ◽

Cfd Simulation ◽

Correction Method ◽

Lattice Tower

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Investigating the potential of re-conductoring a lattice tower overhead line structure

IEEE PES T&D 2010 ◽

10.1109/tdc.2010.5484265 ◽

2010 ◽

Cited By ~ 3

Author(s):

Konstantinos Kopsidas ◽

Simon M. Rowland

Keyword(s):

Overhead Line ◽

Line Structure ◽

Lattice Tower

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Defective insulators in live working on a 550 kV compact steel lattice tower

IEEE Transactions on Power Delivery ◽

10.1109/61.584373 ◽

1997 ◽

Vol 12 (2) ◽

pp. 783-790 ◽

Cited By ~ 6

Author(s):

G. Gela ◽

H. Kientz ◽

H.J. Fox ◽

J.D. Mitchell ◽

P.F. Lyons

Keyword(s):

Lattice Tower

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Theoretical and Experimental Research on Joint Slippage Effects of Lattice Angle Steel Tower

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.477-478.660 ◽

2013 ◽

Vol 477-478 ◽

pp. 660-665

Author(s):

Zhang Qi Wang ◽

Ze Ming Song ◽

Wen Qiang Jiang

Keyword(s):

Axial Force ◽

Numerical Models ◽

Element Model ◽

Test Results ◽

Bolted Joint ◽

Transmission Tower ◽

Hybrid Finite Element ◽

Lattice Tower ◽

Angle Steel ◽

Bolt Diameter

In lattice angle steel transmission tower, as the bolt diameter is small and member connection is relatively thin, lower clamping force is commonly used in bolted joint. It is common in lattice tower during full tower tests, joint slippage occur even under design load. However, traditionally trussed beam hybrid finite element model without explicitly considering slippage effects has been widely used in the analysis of the tower. In this paper, the HD-1 tower was experimentally studied under various static load cases, and several numerical models with including joint eccentricity and slippage are established. After comparing the theoretical analysis results and the experimental results, the following conclusions are presented: joint eccentricity almost has not effects on leg member axial force; Among all the studied load cases, joint slippage effects the leg member force most under torsional condition than the other load conditions; Numerical model with including joint slippage effects yield much better axial force results in leg member compared with experimental test results.

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