Research on improving the reliability of key components of wind turbine

Abstract

Wind turbine is the core equipment to realize the conversion of wind energy to electric energy in wind farms, and high reliability of wind turbine is of great significance to promote the application of typical wind power in new energy. With the passage of time, wind turbines run in bad working conditions for a long time, which leads to more faults of wind turbines in recent years. And it brings hidden dangers to the safe and stable operation of new energy grid-connected power systems. This paper expounds the common failures of key components of wind turbine, including converter, generator, variable pitch system, gearbox, yaw system and blade. Then it analyzes the causes from the aspects of design defects, complex operating conditions, improper maintenance and inadequate technical supervision. Finally it puts forward measures and suggestions to improve the reliability of wind turbine, and prospects the development direction of wind turbine reliability research.