Abstract:

To addres the issue of insufficient communication reliability in the supervisory control and data acquisition (SCADA) systems of wind farms in remote areas, an improved system and control method integrating 4G wireless communication and power-line carrier communication is proposed. By deploying series-connected data transfer unit (DTU) modules and power-line carrier modules in the wind turbine controllerend,a hybrid communication network of “wireless primary communication+carrier backup” is constructed. The DTU module realizes high-speed data transmission through the 4G network,while the power-line carrier module establishes communication links between adjacent wind turbines using the power grid lines. Based on the signal strength detection and communication connection duration evaluation, data transmission mode is dynamically switched to ensure reliable data transmission under weak signals or equipment failures. Experimental results show that the system significantly enhances the anti-interference ability and communication stability of the SCADA system,providing a reliable solution for the remote monitoring and efficient management of wind farms in remote areas.

Key words: wind farm, SCADA system, 4G wireless communication, power line carrier communication, hybrid communication network