Insulation Degradation Mechanism and Diagnosis Methods of Offshore Wind Power Cables: An Overview

The marine environment in which offshore wind turbines are located is very complex and subjected to a variety of random loads that vary with time space. As an important component power, the cable also bears impact most located. Under long-term action mechanical stresses such as tension, torsion, vibration, insulation will crack due stress fatigue leading partial discharge, seriously affects its electrical performance. study mechanism change properties behavior great theoretical guidance improve reliable operation cables. This paper first introduces basic characteristics operating conditions torsion-resistant cables submarine Then summarized, deterioration effect power under influence multiple factors heat, oxygen, sorted out. Then, principles condition monitoring methods their described. Finally, relevant for detection hidden defects inside summarized.