Providing a secure energy supply with high quality service is the mission of energy network operators. To reach this demanding mission, operators must permanently keep an eye on the network status and quickly take specific actions when problem occur.

To perform this task at substation level, the GRTU remote terminal units collect all necessary monitoring information (breakers position, alarm, short-circuits,… ) and report it to the management centre using LonWorks™ communication. Depending on the communication medium available, the information is transmitted by FM-band radio, ISDN, GSM or IP.

The topology of the power network can be reconfigured and breakers operated from distance to ensure a quick return of the energy supply.