Offshore Wind Turbine Tower Land Assembly and Modular High-Voltage Design
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Solution Overview
Problem
Offshore wind turbine construction is hindered by high construction costs and prolonged construction periods due to the use of self-elevating work platforms, which increase operational costs when installing towers and electrical products at sea.
Innovation Solution
Attaching all or part of the electrical products to the tower on land and using a crane to transport and assemble the tower sections on a foundation, with modularization of high-voltage devices to reduce crane operations and enhance maintenance accessibility.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If electrical products are installed on the tower in the sea using a work platform, then the tower can be assembled on-site, but the construction period is prolonged and construction costs increase
Solution Approach 1:
The patent applies preliminary action by pre-assembling the tower and electrical products on land before transport to the sea. The tower sections are manufactured and electrical products are installed in advance, so that when the tower is transported to the offshore location, it requires minimal assembly work, thereby significantly reducing the construction period and costs associated with on-site assembly operations.
2Productivity
If all electrical products are attached to the tower on land, then crane operations at sea are minimized, but the tower becomes heavier and more complex to transport
Solution Approach 1:
The patent applies segmentation by dividing the tower into multiple sections that can be transported separately to the offshore location. Electrical products are attached to specific tower sections on land, allowing for optimized weight distribution and easier transport. This segmentation enables minimal crane operations at sea while managing the weight and complexity of individual tower components.
3Ease of repair
If high-voltage devices are modularized and disposed in accommodation space, then maintenance accessibility is improved, but the foundation structure becomes more complex
Solution Approach 1:
The patent applies the nesting principle by placing electrical products and high-voltage devices within the accommodation space of the tower foundation. This nested arrangement allows maintenance personnel to access electrical products through the tower structure without requiring complex external maintenance infrastructure, thereby improving ease of repair while managing foundation structure complexity through efficient spatial utilization.
Data Source
AI summary
A method for constructing an offshore wind turbine includes: attaching all or a part of electrical products to a tower on land; stowing, on a work platform, the tower to which the electrical product is attached; and disposing, on a foundation, the tower, to which the electric product is attached, by using a crane of the work platform in the sea. In addition, the electrical products are classified into special high-voltage devices and the other electrical products, the special high-voltage devices are modularized on land, the other electrical products are attached to the tower on land, and the modularized special high-voltage devices and the tower, to which the other electrical products are attached, are disposed on the foundation by using the crane of the work platform in the sea.