Browsing Institutt for havromsoperasjoner og byggteknikk by Author "Gao, Zhen"
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Active heave compensation of floating wind turbine installation using a catamaran construction vessel
Ren, Zhengru; Skjetne, Roger; Verma, Amrit Shankar; Jiang, Zhiyu; Gao, Zhen; Halse, Karl Henning (Peer reviewed; Journal article, 2021)The application of floating wind turbines is limited by the high cost that increases with the water depth. Offshore installation and maintenance continue to consume a high percentage of the project budget. To improve the ... -
Impact assessment of a wind turbine blade root during an offshore mating process
Verma, Amrit Shankar; Jiang, Zhiyu; Vedvik, Nils Petter; Gao, Zhen; Ren, Zhengru (Journal article; Peer reviewed, 2019)Single-blade installation is a popular method for installing blades on bottom-fixed offshore wind turbines. A jack-up crane vessel is often employed, and individual blades with their roots equipped with mechanical joints ... -
Mating Control of a Wind Turbine Tower-Nacelle-Rotor Assembly for a Catamaran Installation Vessel
Jiang, Zhiyu; Ren, Zhengru; Gao, Zhen; Sandvik, Peter Christian; Halse, Karl Henning; Skjetne, Roger (Chapter, 2018)The assembly and installation costs of an offshore wind farm can approach 20% of the capital expenditures; therefore, time efficient installation methods are needed for installing offshore wind turbines. This study ...