Study on the Offshore Wind Turbine Installation Equipment With 6 Sets of Intelligent Legs

2014 ◽  
Author(s):  
Chunxiang Ma ◽  
Miaoqi Zheng ◽  
Jun He ◽  
Feng Gao
Keyword(s):  
Wind Turbine ◽  
Kinematic Analysis ◽  
Parallel Mechanism ◽  
Offshore Wind ◽  
Offshore Wind Turbine ◽  
Reliability Model ◽  
Fuzzy Reliability ◽  
Kinematic Accuracy ◽  
New Type ◽  
Turbine Installation

In this paper, a new type of the offshore wind turbine installation equipment is proposed, which has 6 sets of intelligent legs. Each intelligent leg consists of two-UPS and one-UP. Based on the theory of the parallel mechanism, the mechanism of this offshore wind turbine installation equipment with 6 sets of intelligent legs is constructed. We take a set of the intelligent leg for analysis and conducted kinematic analysis and dynamic analysis on the offshore wind turbine installation equipment. Finally, by studying the fuzzy reliability of the kinematic accuracy of a branch, the reliability model of the whole mechanism of the installation equipment combined with the characteristics of installation process is established, and the calculation of the fuzzy reliability of the kinematic accuracy of the whole mechanism is carried out.

scholarly journals Virtual Prototyping of a Low-Height Lifting System for Offshore Wind Turbine Installation

2021 ◽  
Author(s):  
Jiafeng Xu ◽  
Behfar Ataei ◽  
Karl Henning Halse ◽  
Hans Petter Hildre ◽  
Egil Tennfjord Mikalsen
Keyword(s):  
Wind Turbine ◽  
Virtual Prototyping ◽  
Offshore Wind ◽  
Offshore Wind Turbine ◽  
Lifting System ◽  
Turbine Installation

Fuzzy Bayesian schedule risk network for offshore wind turbine installation

2019 ◽  
Vol 188 ◽  
pp. 106238 ◽  
Author(s):  
Min-Yuan Cheng ◽  
Yung-Fu Wu ◽  
Yu-Wei Wu ◽  
Sainabou Ndure
Keyword(s):  
Wind Turbine ◽  
Offshore Wind ◽  
Offshore Wind Turbine ◽  
Schedule Risk ◽  
Turbine Installation

A Study on Static Water Resistance Prediction of Offshore Wind Turbine Installation Vessel

2014 ◽  
Vol 1061-1062 ◽  
pp. 1124-1128
Author(s):  
Lei Xin ◽  
Chang Han Ng ◽  
Song Lin Yang
Keyword(s):  
Mathematical Model ◽  
Wind Turbine ◽  
Water Resistance ◽  
Estimation Method ◽  
Engineering Application ◽  
Offshore Wind ◽  
Offshore Wind Turbine ◽  
Static Water ◽  
Resistance Prediction ◽  
Turbine Installation

A mathematical model is proposed for predicting static water resistance of offshore wind turbine installation vessel and to calculate the resistance of a certain type of offshore wind turbine installation vessel. In order to verify the efficiency of this mathematical model, the comparison between results calculated by it and actual model test has been made. The conclusion indicates that the estimation method is reliable, and it can provide reference for resistance calculation of similar type vessels. Currently in China, there are no references for the effective prediction and calculation of the resistance for offshore wind turbine installation vessel. Therefore the proposed method has important value of engineering application in the areas of effective resistance estimation method of offshore wind turbine installation vessel, as well as the numerical calculation of ship hydrodynamics.

Installation Vessel and Method for Offshore Wind Turbine in Ultra-Shallow Water

2010 ◽  
Author(s):  
Huiqu Fan ◽  
Jinbao Lin ◽  
Qingsong Shi
Keyword(s):  
Wind Turbine ◽  
Shallow Water ◽  
Wind Turbines ◽  
Wind Farm ◽  
Offshore Wind ◽  
Offshore Wind Turbine ◽  
Wind Speeds ◽  
Total Investment ◽  
Key Issues ◽  
Turbine Installation

Compared to onshore wind turbines, offshore wind turbines take advantage of wind speeds which are more constant and stronger than those on land. Since many large electricity load centers are located near coastline in China, larger wind turbines can be installed closer to these areas to supply energy in a more economical way. Wind turbine transportation and installation are key issues for offshore wind farm construction, especially for large size turbine installation in ultra-shallow water like intertidal zone with water depth less than 5m. The traditional installation vessels with large design drafts are likely to be trapped in shallow water zones. It is usually impossible to carry out turbine installation in shallow water. This paper presents a set of innovative installation vessel concept and corresponding methods for ultra-shallow water zone include ultra-shallow draft crane vessel and ultra-shallow draft barge. The main purpose is to simplify the installation procedures and reduce total investment.

Numerical Study for a Catamaran Gripper-Monopile Mechanism of a Novel Offshore Wind Turbine Assembly Installation Procedure

2017 ◽  
Author(s):  
Lars Ivar Hatledal ◽  
Houxiang Zhang ◽  
Karl Henning Halse ◽  
Hans Petter Hildre
Keyword(s):  
Numerical Simulations ◽  
Wind Turbine ◽  
Wind Turbines ◽  
Numerical Study ◽  
Weather Conditions ◽  
Rolling Contact ◽  
Offshore Wind ◽  
Offshore Wind Turbine ◽  
Contact Points ◽  
Turbine Installation

Current methods for installation of offshore wind turbines are all sensitive to the weather conditions and the present cost level of offshore wind power is more than twice the cost of land-based units, increasing with water depth. This paper presents numerical simulations of a novel experimental gripper design to reduce the environmental effects applied to a catamaran type of vessel during wind turbine installation. In SFI MOVE project in NTNU Aalesund, our team proposed a novel wind turbine installation process. A new catamaran vessel will carry pre-assembled wind turbines to the installation location. Two new designed grippers on the deck will make a lifting operation to install the wind turbine onto the turbine foundation. Three prismatic grippers with several rolling contact points at the end are attached in an arc at the catamaran’s aft, designed to grasp the turbine foundation in order to make a connection between the two in the horizontal plane. This paper will only emphasize the contact responses between the turbine foundation and the three grippers during the wind turbine installation process. Numerical simulations are carried out using the virtual prototyping framework Vicosim which is developed by NTNU Aalesund. The simulation results show validation of a key part of the proposed new wind turbine installation idea.

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