The optoelectronic composite cable combines the functions of optical fibers and cables, which can transmit both electricity and optical signals, thus playing an important role in wind power generation systems. A short overview of the fibre optic cables used in wind farm SCADA networks: why they are dielectric, how they are built, and what to look for in a specification. These cables, often running hundreds of kilometers underwater, face harsh environmental conditions. They include power transmission and distribution as well as control, electronic, data transmission and fibre optic cables.