Wind Turbine Tower U-Shaped Cable Routing for Tall Transition Pieces
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Solution Overview
Problem
The increasing height of transition pieces in wind turbines necessitates longer high voltage cables, which are cumbersome to store and transport due to their additional length required for electrical connections, especially for turbines with larger distances between the tower's lower end and the switch gear.
Innovation Solution
A method involving guiding and returning the high voltage cable inside the tower from the upper part to the lower part, forming a U-shape, and using winches and platforms to manage and store the additional cable length efficiently during transport and assembly.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Length of stationary object
If the transition piece height is increased to accommodate larger wind turbines, then the electrical connection capability is improved, but the additional length of high voltage cable required increases making it difficult to store and transport
Solution Approach 1:
The high voltage cable is nested inside the tower structure during transport. The cable is guided from the upper part of the tower to the lower part and returned up again, allowing the cable to be stored within the tower's internal space rather than requiring external storage. This nesting approach enables the tower to carry its own cable payload without increasing external dimensions.
Solution Approach 2:
The cable management approach transitions from linear storage to three-dimensional routing within the tower. By guiding the cable from the upper part down to the lower part and returning it upward, the solution utilizes the vertical dimension of the tower interior to accommodate the cable length required for extended transition pieces.
2Adaptability or versatility
If the additional length of high voltage cable is increased to reach the switch gear in taller transition pieces, then the electrical connection range is improved, but the cable becomes more cumbersome to handle and control
Solution Approach 1:
The high voltage cable is pre-guided and pre-positioned inside the tower during manufacturing, forming a U-shape configuration before the tower is erected. This preliminary arrangement ensures that when the tower is installed on the transition piece, the cable is already in the correct position and configuration, eliminating the need for complex handling and control operations during installation.
Solution Approach 2:
The tower structure itself acts as an intermediary mechanism to manage the cable. By routing the cable through the tower's internal space and using the tower's geometry to guide and return the cable, the system eliminates the need for external cable management equipment during transport and installation.
3Quantity of substance
If the high voltage cable is guided from the upper part of the tower to the lower part and returned up again, then the additional cable length can be stored inside the tower, but the cable routing complexity increases
Solution Approach 1:
The cable routing is merged with the tower's structural geometry. The U-shape configuration of the cable naturally follows the vertical extent of the tower, combining the cable storage function with the tower's existing structural form rather than requiring separate, complex routing mechanisms.
Data Source
AI summary
Provided is a method for manufacturing a wind turbine, the wind turbine including a high voltage cable configured to connect a generator of the wind turbine with a switch gear of the wind turbine, the method: a) guiding the high voltage cable inside a tower of the wind turbine from an upper part of the tower to a lower part of the tower, and b) returning the high voltage cable at the lower part of the tower up again. Returning the high voltage cable at the lower part of the tower up again simplifies storing an additional length of the high voltage cable inside the tower.