Technical Solutions to Reduce Dielectric Losses of Electricity in Current Conductors During its Transmission from Offshore Wind Farms

On the basis of the National Research University “NRU MPEI,” within the framework of the project to create a current conductor with polymer-gas insulation for the transmission of electricity from offshore wind turbines, a study is being carried out to develop insulating structures for high-voltage current conductors. The purpose of this study is to develop and justify the design of a special undersea conductor with a combined insulation (polymer-gas) for transmitting electrical energy from wind turbines, where a polymer coating of the current-carrying elements is used to increase the electrical strength and reduce the dimensions of the current conductor, and a basic gas insulation is used to reduce energy losses. The paper presents technical solutions for producing linear and connecting sections of current conductors with polymer-gas insulation. The distribution of the electric field strength in the coaxial gap was analyzed, demonstrating the specifics of the design solutions for linear sections. According to the calculations performed by the authors, the use of gas insulation in special current conductors makes it possible to reduce the dielectric losses by at least 2 – 2.5 times.