TECHNOLOGY
While the state plays host to major cities such as Belo Horizonte , it is also made up of very remote areas with lower population densities . In the event that there is an incident with the electrical system , Cemig uses reclosers to test the medium voltage distribution network automatically , interrupting the power in the event of a problem and restoring the supply if they detect the problem is no longer present .
OnixSat and Inmarsat developed a solution based on satellite connectivity to enable Cemig to increase availability and improve its remote controlling of reclosers . The solution uses a serial / ethernet converter and Hughes ’
BGAN 9502 terminal to connect the reclosers to Inmarsat ’ s ultra-reliable L-band satellite network , in order to ensure the effectiveness of the commands issued to the reclosers by Cemig ’ s Centre of Operations .
The collaboration between OnixSat and Inmarsat has produced impressive results for Cemig . Before deploying the solution , Cemig had an effective availability of remotely controlling the reclosers in the remote recloser project of less than 90 %. After deployment of the Inmarsat and OnixSat solution , this indicator now shows an average of 98 % at the points where satellite communication was installed .
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