Design And Hydrodynamic Research Of Wind-solar Complementary Platform Based On Barge Platform

At present,international research related to wind power can be divided into two categories:offshore floating platform wind power generation and onshore fixed platform wind power generation.Relatively speaking,few people pay attention to the part between them-wind power generation on the inland lake.For inland lakes and reservoirs of our country,a small wind and solar complementary floating platform barge type floating platform is designed,recycles the wind and solar energy on the lake,studies the hydrodynamic response of the floating platform,and proposes a strategy of stabilizing the wind turbine floating platform with solar floating platform.This article mainly covers the following parts:In the first part,based on CATIA software,a wind and solar complementary floating platform is designed.The floating foundation is composed of two floating bodies.The two floating bodies are flexibly connected by cables.The floating body in the middle is mainly used to support the wind turbine.At the same time,solar panels are placed on the slope around,and the outer solar floating platform is used to support the solar panels.In the second part,through diffraction analysis of the hydrodynamic model of the wind-solar complementary floating platform using the hydrodynamic software AQWA,a series of hydrodynamic coefficients are obtained: added mass,radiation damping,first-order wave force transfer function,and second-order wave force transfer function.Through the comparison and analysis of these hydrodynamic coefficient images,the law of each coefficient changing with the frequency is studied,the influence of different wave directions on the three degrees of freedom RAO is discussed,and the surge,heave and pitch RAO of the barge-type wind-solar complementary floating platform under the 0 ° wave is analyzed and compared.The analysis process explains the reasons of different motion performance of the wind-solar complementary floating platform from the perspective of basic theory.In the third part,the wind-flow force coefficient solver is written in cpp language,after processing the results,a.CSV file is generated,which is convenient for AQWA to call directly;The time domain motion response of the floating platform under the combined action of 0 ° wind,wave and current is calculated.The tension response results of the mooring line between the platform and the lake bottom and the connecting line between the two floating bodies are analyzed respectively,and the variation characteristics of the floating platform under different water depths are studied.Finally,the safety of the mooring system of the multi-floating system after the single line breaks is considered.The fourth part is the study of multibody hydrodynamics.The influence of solar floating platform on wind turbine floating platform is studied.Using radiation/diffraction theory and finite element method,under wind,wave and current loads,the dynamic response of the wind turbine floating platform and the non-interacting wind turbine floating platform in the wind-solar complementary floating platform are compared,and the interaction between multiple floating bodies and the influence of the solar energy floating platform on the wind turbine floating platform are studied.