The expectations and tasks to be performed by RTU have increased over the years as result of Smart Grid requirements.
The RTU (Remote Terminal Unit) is a device for acquiring, processing, storing and transmitting information between the Secondary Substation and the Control Center.
The main tasks of the Remote Terminal Unit are:
• facilitating efficient and reliable communication between secondary substation and control center
• collecting and processing information from the secondary substation and communicating the information to SCADA
• enabling the monitoring and controlling of the secondary substation.
RTUs are expanding their functionality from a pure collection of switch status and measured values to processing those data and creating additional benefits by providing profile information about the utilization of the distribution network.
Adelsystem DC-UPS secure sufficient and reliable power supply to RTUs and other devices installed in secondary substations. All active devices work on Direct Current (DC) typically 24V, but other voltages are also possible.
In order to keep the communication with the substation and protection in the substation active during outages, there is a need for an uninterruptable power supply (UPS) that keeps the devices active during a period of several hours.