The Development Of Wind Turbine Vibration Monitoring System

The global energy shortage and environmental pollution make the development and utilization of new energy a hot topic all over the world. More and more attention have been paid to the wind energy, which is clean, safe and cyclical. And the wind power technology is becoming more and more popular. Wind turbine is the most important equipment of wind power, it is a complex of mechanical components that converts wind energy into mechanical energy and then into electrical energy. Nowadays, wind turbines are becoming more and more complex, even one of their parts is out of work, the whole equipment will have to shut down, it certainly will bring economic loss. Besides, the special location of wind turbines makes it inconvenient to maintain and repair. Therefore, condition monitoring is essential for wind turbines.This paper firstly studied the structure and working principle of the wind turbines, as well as the commonly used vibration analysis methods. Then a monitoring system was designed to detect and analyse the vibration signals of wind turbines. The system can be mainly divided into the vibration detection module and the PC monitoring module. The vibration detection module took STM32F103VB as the core to built its hardware platform, which realize the acquisition, filtering and amplifying of vibration signals. The embedded12bit AD converter converted these analog signals to digital ones, and the RS-485interface transmit them to the PC monitoring module. The PC monitoring software was developed with programming language Visual C#under.NET Framework2.0. It can receive data from vibration detection module, display and analysis it. Moreover, the application adopted ADO.NET technology to visit Access database, which complete the storage and management of the vibration data. Experiments show that the system can collect signals effectively. It has a user-friendly interface and works stable.