公开(公告)号：US11725634B2

公开(公告)日：2023-08-15

申请号：US17298757

申请日：2019-12-05

Applicant: Vestas Wind Systems A/S

Inventor： Thor Thiim Hansen ,  Christian Fuglsbjerg ,  Slawomir Michaluk ,  Jeppe Søe

IPC: F03D80/80 ,  F03D13/25 ,  F03D13/10 ,  F03D9/25

CPC classification number: F03D80/85 ,  F03D13/10 ,  F03D13/25 ,  F03D9/257 ,  F05B2230/60 ,  F05B2240/85

Abstract: A transition piece (140) for a wind turbine tower (110) is provided, that is configured to be installed on a tower foundation (111) and to carry a tower piece (113). It comprises a high voltage joint (10) with grid input and output terminals (11, 12) and WTG connecting input and output terminals (14, 13). The grid input terminal (11) is configured for receiving and connecting to an array cable (21) from a power grid (20). The WTG connecting output terminal (13) is operatively connected to the grid input terminal (11) for receiving and connecting to an input cable (23) leading to a switchgear (30). The WTG connecting input terminal (14) is configured for receiving and connecting to an output cable (24) from the switchgear (30). The grid output terminal (12) is operatively connected to the WTG connecting input terminal (14) for receiving and connecting to an array cable (22) leading to the power grid (20). Further, installation, testing, connecting and maintenance methods taking advantage of the high voltage joint (10) are provided.