Techinova Use TETRA Radio as Data Carrier for EON in Sweden
The experts in communication and automation solutions use Tetra radio as a data carrier over SDS (Short Data Service) and have developed a gateway between IEC60870-5-101 and Tetra SDS which is used throughout Sweden.
As Swedish utilities are required to monitor the electricity distribution network over vast areas, Techinova AB, who are experts in communication and automation solutions and based in Karlskrona, Sweden have installed their long distance radio systems within the RC10 control cubicle with the RTU acting as the IEC60870-5-101 master that constantly polls the data from the recloser.
If the status of the recloser has changed, then a radio message is forwarded through the radio network. It does not transmit unless there has been a status change. This gives a very fast and responsive radio system with very long range capability since all radio RTUs have built in repeater functionality.
TETRA Short Data Service
Techinova also use Tetra radio as a data carrier over SDS (Short Data Service) and have developed a gateway between IEC60870-5-101 and Tetra SDS which is used throughout Sweden and in NOJA Power reclosers for EON.
Smart Grid Trial
The Swedish utilities are very forward thinking, none more so than EON in Kisa, Östergötland region which is in the South of Sweden where they are evaluating a "Smartare Nät" or "Smarter Grids" looking for the best solution for their future needs. They have installed a trial system using a fully automated back feed restoration scheme with two normally open points (two normally open reclosers with ABR enabled) between two feeders. On each outgoing line, two reclosers with full directional protection settings have been installed.
There are four companies being evaluated but the NOJA Power/Techinova solution is the only one that isolates a fault in two directions and automatically restores power from two directions. Techinova were also the only one to think of an "emergency stop" in SCADA, one graphical button that turns reclosing off on all units within the system.
Since these reclosers have been installed, NOJA Power have further enhanced the product range with the launch of the new RC15 with improved communications including Wi-Fi, GPS, 3G/4G modem and SIM card making it the most advance recloser product on the market today.
