SCADA

RTUs are mainly responsible for acquiring data and implementing control. They receive data through different interfaces that indicate real-time information such as turbines status, active/reactive power, environmental conditions inside nacelles, substations’ status, and weather conditions across the wind farm. They then send the data to the working station via Ethernet so that operators could give instructions back to RTUs to implement various operations such as starting and shutting down turbines, testing and resetting, as well as manipulating sub-systems including yaw control, pitch control and generator control. The human-machine interfaces installed on each RTU can be used for on-site control by operators when necessary. Additionally, RTUs are capable of shutting down turbines automatically when operational parameters are exceeded.

Working stations are composed of data servers, network devices and human-machine interfaces. They are the control centres that monitor general information such as installed capacity, operating status and weather condition of the wind farm, manage wind turbines with a graphical topology, and provide authorized users with web access to system through Internet. Furthermore, they have capabilities for generating statistics, importing and converting topographic maps, and implementing synchronization between each virtual turbine and the associated physical one.

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